3007 lines
109 KiB
C++
3007 lines
109 KiB
C++
//===--- Expr.h - Classes for representing expressions ----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defines the Expr interface and subclasses.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_AST_EXPR_H
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#define LLVM_CLANG_AST_EXPR_H
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#include "clang/AST/APValue.h"
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#include "clang/AST/Stmt.h"
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#include "clang/AST/Type.h"
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#include "llvm/ADT/APSInt.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include <vector>
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namespace clang {
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class ASTContext;
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class APValue;
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class Decl;
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class IdentifierInfo;
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class ParmVarDecl;
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class NamedDecl;
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class ValueDecl;
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class BlockDecl;
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class CXXOperatorCallExpr;
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class CXXMemberCallExpr;
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class TemplateArgumentLoc;
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/// Expr - This represents one expression. Note that Expr's are subclasses of
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/// Stmt. This allows an expression to be transparently used any place a Stmt
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/// is required.
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///
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class Expr : public Stmt {
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QualType TR;
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protected:
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/// TypeDependent - Whether this expression is type-dependent
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/// (C++ [temp.dep.expr]).
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bool TypeDependent : 1;
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/// ValueDependent - Whether this expression is value-dependent
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/// (C++ [temp.dep.constexpr]).
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bool ValueDependent : 1;
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// FIXME: Eventually, this constructor should go away and we should
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// require every subclass to provide type/value-dependence
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// information.
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Expr(StmtClass SC, QualType T)
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: Stmt(SC), TypeDependent(false), ValueDependent(false) {
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setType(T);
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}
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Expr(StmtClass SC, QualType T, bool TD, bool VD)
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: Stmt(SC), TypeDependent(TD), ValueDependent(VD) {
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setType(T);
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}
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/// \brief Construct an empty expression.
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explicit Expr(StmtClass SC, EmptyShell) : Stmt(SC) { }
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public:
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/// \brief Increases the reference count for this expression.
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///
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/// Invoke the Retain() operation when this expression
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/// is being shared by another owner.
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Expr *Retain() {
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Stmt::Retain();
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return this;
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}
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QualType getType() const { return TR; }
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void setType(QualType t) {
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// In C++, the type of an expression is always adjusted so that it
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// will not have reference type an expression will never have
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// reference type (C++ [expr]p6). Use
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// QualType::getNonReferenceType() to retrieve the non-reference
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// type. Additionally, inspect Expr::isLvalue to determine whether
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// an expression that is adjusted in this manner should be
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// considered an lvalue.
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assert((t.isNull() || !t->isReferenceType()) &&
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"Expressions can't have reference type");
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TR = t;
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}
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/// isValueDependent - Determines whether this expression is
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/// value-dependent (C++ [temp.dep.constexpr]). For example, the
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/// array bound of "Chars" in the following example is
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/// value-dependent.
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/// @code
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/// template<int Size, char (&Chars)[Size]> struct meta_string;
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/// @endcode
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bool isValueDependent() const { return ValueDependent; }
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/// \brief Set whether this expression is value-dependent or not.
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void setValueDependent(bool VD) { ValueDependent = VD; }
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/// isTypeDependent - Determines whether this expression is
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/// type-dependent (C++ [temp.dep.expr]), which means that its type
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/// could change from one template instantiation to the next. For
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/// example, the expressions "x" and "x + y" are type-dependent in
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/// the following code, but "y" is not type-dependent:
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/// @code
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/// template<typename T>
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/// void add(T x, int y) {
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/// x + y;
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/// }
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/// @endcode
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bool isTypeDependent() const { return TypeDependent; }
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/// \brief Set whether this expression is type-dependent or not.
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void setTypeDependent(bool TD) { TypeDependent = TD; }
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/// SourceLocation tokens are not useful in isolation - they are low level
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/// value objects created/interpreted by SourceManager. We assume AST
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/// clients will have a pointer to the respective SourceManager.
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virtual SourceRange getSourceRange() const = 0;
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/// getExprLoc - Return the preferred location for the arrow when diagnosing
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/// a problem with a generic expression.
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virtual SourceLocation getExprLoc() const { return getLocStart(); }
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/// isUnusedResultAWarning - Return true if this immediate expression should
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/// be warned about if the result is unused. If so, fill in Loc and Ranges
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/// with location to warn on and the source range[s] to report with the
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/// warning.
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bool isUnusedResultAWarning(SourceLocation &Loc, SourceRange &R1,
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SourceRange &R2, ASTContext &Ctx) const;
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/// isLvalue - C99 6.3.2.1: an lvalue is an expression with an object type or
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/// incomplete type other than void. Nonarray expressions that can be lvalues:
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/// - name, where name must be a variable
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/// - e[i]
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/// - (e), where e must be an lvalue
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/// - e.name, where e must be an lvalue
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/// - e->name
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/// - *e, the type of e cannot be a function type
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/// - string-constant
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/// - reference type [C++ [expr]]
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/// - b ? x : y, where x and y are lvalues of suitable types [C++]
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///
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enum isLvalueResult {
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LV_Valid,
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LV_NotObjectType,
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LV_IncompleteVoidType,
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LV_DuplicateVectorComponents,
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LV_InvalidExpression,
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LV_MemberFunction
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};
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isLvalueResult isLvalue(ASTContext &Ctx) const;
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// Same as above, but excluding checks for non-object and void types in C
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isLvalueResult isLvalueInternal(ASTContext &Ctx) const;
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/// isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type,
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/// does not have an incomplete type, does not have a const-qualified type,
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/// and if it is a structure or union, does not have any member (including,
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/// recursively, any member or element of all contained aggregates or unions)
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/// with a const-qualified type.
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///
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/// \param Loc [in] [out] - A source location which *may* be filled
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/// in with the location of the expression making this a
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/// non-modifiable lvalue, if specified.
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enum isModifiableLvalueResult {
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MLV_Valid,
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MLV_NotObjectType,
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MLV_IncompleteVoidType,
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MLV_DuplicateVectorComponents,
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MLV_InvalidExpression,
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MLV_LValueCast, // Specialized form of MLV_InvalidExpression.
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MLV_IncompleteType,
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MLV_ConstQualified,
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MLV_ArrayType,
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MLV_NotBlockQualified,
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MLV_ReadonlyProperty,
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MLV_NoSetterProperty,
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MLV_MemberFunction
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};
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isModifiableLvalueResult isModifiableLvalue(ASTContext &Ctx,
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SourceLocation *Loc = 0) const;
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/// \brief If this expression refers to a bit-field, retrieve the
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/// declaration of that bit-field.
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FieldDecl *getBitField();
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const FieldDecl *getBitField() const {
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return const_cast<Expr*>(this)->getBitField();
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}
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/// isIntegerConstantExpr - Return true if this expression is a valid integer
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/// constant expression, and, if so, return its value in Result. If not a
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/// valid i-c-e, return false and fill in Loc (if specified) with the location
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/// of the invalid expression.
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bool isIntegerConstantExpr(llvm::APSInt &Result, ASTContext &Ctx,
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SourceLocation *Loc = 0,
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bool isEvaluated = true) const;
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bool isIntegerConstantExpr(ASTContext &Ctx, SourceLocation *Loc = 0) const {
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llvm::APSInt X;
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return isIntegerConstantExpr(X, Ctx, Loc);
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}
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/// isConstantInitializer - Returns true if this expression is a constant
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/// initializer, which can be emitted at compile-time.
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bool isConstantInitializer(ASTContext &Ctx) const;
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/// EvalResult is a struct with detailed info about an evaluated expression.
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struct EvalResult {
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/// Val - This is the value the expression can be folded to.
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APValue Val;
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/// HasSideEffects - Whether the evaluated expression has side effects.
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/// For example, (f() && 0) can be folded, but it still has side effects.
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bool HasSideEffects;
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/// Diag - If the expression is unfoldable, then Diag contains a note
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/// diagnostic indicating why it's not foldable. DiagLoc indicates a caret
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/// position for the error, and DiagExpr is the expression that caused
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/// the error.
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/// If the expression is foldable, but not an integer constant expression,
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/// Diag contains a note diagnostic that describes why it isn't an integer
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/// constant expression. If the expression *is* an integer constant
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/// expression, then Diag will be zero.
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unsigned Diag;
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const Expr *DiagExpr;
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SourceLocation DiagLoc;
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EvalResult() : HasSideEffects(false), Diag(0), DiagExpr(0) {}
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};
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/// Evaluate - Return true if this is a constant which we can fold using
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/// any crazy technique (that has nothing to do with language standards) that
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/// we want to. If this function returns true, it returns the folded constant
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/// in Result.
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bool Evaluate(EvalResult &Result, ASTContext &Ctx) const;
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/// EvaluateAsAny - The same as Evaluate, except that it also succeeds on
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/// stack based objects.
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bool EvaluateAsAny(EvalResult &Result, ASTContext &Ctx) const;
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/// isEvaluatable - Call Evaluate to see if this expression can be constant
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/// folded, but discard the result.
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bool isEvaluatable(ASTContext &Ctx) const;
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/// HasSideEffects - This routine returns true for all those expressions
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/// which must be evaluated each time and must not be optimization away
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/// or evaluated at compile time. Example is a function call, volatile
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/// variable read.
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bool HasSideEffects(ASTContext &Ctx) const;
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/// EvaluateAsInt - Call Evaluate and return the folded integer. This
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/// must be called on an expression that constant folds to an integer.
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llvm::APSInt EvaluateAsInt(ASTContext &Ctx) const;
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/// EvaluateAsLValue - Evaluate an expression to see if it's a lvalue
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/// with link time known address.
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bool EvaluateAsLValue(EvalResult &Result, ASTContext &Ctx) const;
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/// EvaluateAsAnyLValue - The same as EvaluateAsLValue, except that it
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/// also succeeds on stack based, immutable address lvalues.
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bool EvaluateAsAnyLValue(EvalResult &Result, ASTContext &Ctx) const;
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/// \brief Enumeration used to describe how \c isNullPointerConstant()
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/// should cope with value-dependent expressions.
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enum NullPointerConstantValueDependence {
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/// \brief Specifies that the expression should never be value-dependent.
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NPC_NeverValueDependent = 0,
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/// \brief Specifies that a value-dependent expression of integral or
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/// dependent type should be considered a null pointer constant.
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NPC_ValueDependentIsNull,
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/// \brief Specifies that a value-dependent expression should be considered
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/// to never be a null pointer constant.
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NPC_ValueDependentIsNotNull
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};
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/// isNullPointerConstant - C99 6.3.2.3p3 - Return true if this is either an
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/// integer constant expression with the value zero, or if this is one that is
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/// cast to void*.
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bool isNullPointerConstant(ASTContext &Ctx,
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NullPointerConstantValueDependence NPC) const;
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/// isOBJCGCCandidate - Return true if this expression may be used in a read/
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/// write barrier.
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bool isOBJCGCCandidate(ASTContext &Ctx) const;
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/// IgnoreParens - Ignore parentheses. If this Expr is a ParenExpr, return
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/// its subexpression. If that subexpression is also a ParenExpr,
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/// then this method recursively returns its subexpression, and so forth.
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/// Otherwise, the method returns the current Expr.
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Expr* IgnoreParens();
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/// IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr
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/// or CastExprs, returning their operand.
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Expr *IgnoreParenCasts();
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/// IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the
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/// value (including ptr->int casts of the same size). Strip off any
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/// ParenExpr or CastExprs, returning their operand.
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Expr *IgnoreParenNoopCasts(ASTContext &Ctx);
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const Expr* IgnoreParens() const {
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return const_cast<Expr*>(this)->IgnoreParens();
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}
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const Expr *IgnoreParenCasts() const {
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return const_cast<Expr*>(this)->IgnoreParenCasts();
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}
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const Expr *IgnoreParenNoopCasts(ASTContext &Ctx) const {
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return const_cast<Expr*>(this)->IgnoreParenNoopCasts(Ctx);
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}
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static bool hasAnyTypeDependentArguments(Expr** Exprs, unsigned NumExprs);
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static bool hasAnyValueDependentArguments(Expr** Exprs, unsigned NumExprs);
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static bool classof(const Stmt *T) {
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return T->getStmtClass() >= firstExprConstant &&
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T->getStmtClass() <= lastExprConstant;
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}
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static bool classof(const Expr *) { return true; }
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};
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//===----------------------------------------------------------------------===//
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// Primary Expressions.
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//===----------------------------------------------------------------------===//
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/// \brief Represents the qualifier that may precede a C++ name, e.g., the
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/// "std::" in "std::sort".
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struct NameQualifier {
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/// \brief The nested name specifier.
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NestedNameSpecifier *NNS;
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/// \brief The source range covered by the nested name specifier.
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SourceRange Range;
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};
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/// \brief Represents an explicit template argument list in C++, e.g.,
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/// the "<int>" in "sort<int>".
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struct ExplicitTemplateArgumentList {
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/// \brief The source location of the left angle bracket ('<');
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SourceLocation LAngleLoc;
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/// \brief The source location of the right angle bracket ('>');
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SourceLocation RAngleLoc;
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/// \brief The number of template arguments in TemplateArgs.
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/// The actual template arguments (if any) are stored after the
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/// ExplicitTemplateArgumentList structure.
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unsigned NumTemplateArgs;
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/// \brief Retrieve the template arguments
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TemplateArgumentLoc *getTemplateArgs() {
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return reinterpret_cast<TemplateArgumentLoc *> (this + 1);
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}
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/// \brief Retrieve the template arguments
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const TemplateArgumentLoc *getTemplateArgs() const {
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return reinterpret_cast<const TemplateArgumentLoc *> (this + 1);
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}
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};
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/// DeclRefExpr - [C99 6.5.1p2] - A reference to a declared variable, function,
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/// enum, etc.
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class DeclRefExpr : public Expr {
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enum {
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// Flag on DecoratedD that specifies when this declaration reference
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// expression has a C++ nested-name-specifier.
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HasQualifierFlag = 0x01,
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// Flag on DecoratedD that specifies when this declaration reference
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// expression has an explicit C++ template argument list.
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HasExplicitTemplateArgumentListFlag = 0x02
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};
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// DecoratedD - The declaration that we are referencing, plus two bits to
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// indicate whether (1) the declaration's name was explicitly qualified and
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// (2) the declaration's name was followed by an explicit template
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// argument list.
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llvm::PointerIntPair<NamedDecl *, 2> DecoratedD;
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// Loc - The location of the declaration name itself.
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SourceLocation Loc;
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/// \brief Retrieve the qualifier that preceded the declaration name, if any.
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NameQualifier *getNameQualifier() {
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if ((DecoratedD.getInt() & HasQualifierFlag) == 0)
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return 0;
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return reinterpret_cast<NameQualifier *> (this + 1);
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}
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/// \brief Retrieve the qualifier that preceded the member name, if any.
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const NameQualifier *getNameQualifier() const {
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return const_cast<DeclRefExpr *>(this)->getNameQualifier();
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}
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/// \brief Retrieve the explicit template argument list that followed the
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/// member template name, if any.
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ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() {
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if ((DecoratedD.getInt() & HasExplicitTemplateArgumentListFlag) == 0)
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return 0;
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if ((DecoratedD.getInt() & HasQualifierFlag) == 0)
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return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1);
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return reinterpret_cast<ExplicitTemplateArgumentList *>(
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getNameQualifier() + 1);
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}
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/// \brief Retrieve the explicit template argument list that followed the
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/// member template name, if any.
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const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const {
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return const_cast<DeclRefExpr *>(this)->getExplicitTemplateArgumentList();
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}
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DeclRefExpr(NestedNameSpecifier *Qualifier, SourceRange QualifierRange,
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NamedDecl *D, SourceLocation NameLoc,
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bool HasExplicitTemplateArgumentList,
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SourceLocation LAngleLoc,
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const TemplateArgumentLoc *ExplicitTemplateArgs,
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unsigned NumExplicitTemplateArgs,
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SourceLocation RAngleLoc,
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QualType T, bool TD, bool VD);
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protected:
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// FIXME: Eventually, this constructor will go away and all subclasses
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// will have to provide the type- and value-dependent flags.
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DeclRefExpr(StmtClass SC, NamedDecl *d, QualType t, SourceLocation l) :
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Expr(SC, t), DecoratedD(d, 0), Loc(l) {}
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DeclRefExpr(StmtClass SC, NamedDecl *d, QualType t, SourceLocation l, bool TD,
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bool VD) :
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Expr(SC, t, TD, VD), DecoratedD(d, 0), Loc(l) {}
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public:
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// FIXME: Eventually, this constructor will go away and all clients
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// will have to provide the type- and value-dependent flags.
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DeclRefExpr(NamedDecl *d, QualType t, SourceLocation l) :
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Expr(DeclRefExprClass, t), DecoratedD(d, 0), Loc(l) {}
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DeclRefExpr(NamedDecl *d, QualType t, SourceLocation l, bool TD, bool VD) :
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Expr(DeclRefExprClass, t, TD, VD), DecoratedD(d, 0), Loc(l) {}
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/// \brief Construct an empty declaration reference expression.
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explicit DeclRefExpr(EmptyShell Empty)
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: Expr(DeclRefExprClass, Empty) { }
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static DeclRefExpr *Create(ASTContext &Context,
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NestedNameSpecifier *Qualifier,
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SourceRange QualifierRange,
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NamedDecl *D,
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SourceLocation NameLoc,
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QualType T, bool TD, bool VD);
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static DeclRefExpr *Create(ASTContext &Context,
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NestedNameSpecifier *Qualifier,
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SourceRange QualifierRange,
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NamedDecl *D,
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SourceLocation NameLoc,
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bool HasExplicitTemplateArgumentList,
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SourceLocation LAngleLoc,
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const TemplateArgumentLoc *ExplicitTemplateArgs,
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unsigned NumExplicitTemplateArgs,
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SourceLocation RAngleLoc,
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QualType T, bool TD, bool VD);
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NamedDecl *getDecl() { return DecoratedD.getPointer(); }
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const NamedDecl *getDecl() const { return DecoratedD.getPointer(); }
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void setDecl(NamedDecl *NewD) { DecoratedD.setPointer(NewD); }
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SourceLocation getLocation() const { return Loc; }
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void setLocation(SourceLocation L) { Loc = L; }
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virtual SourceRange getSourceRange() const;
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/// \brief Determine whether this declaration reference was preceded by a
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/// C++ nested-name-specifier, e.g., \c N::foo.
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bool hasQualifier() const { return DecoratedD.getInt() & HasQualifierFlag; }
|
|
|
|
/// \brief If the name was qualified, retrieves the source range of
|
|
/// the nested-name-specifier that precedes the name. Otherwise,
|
|
/// returns an empty source range.
|
|
SourceRange getQualifierRange() const {
|
|
if (!hasQualifier())
|
|
return SourceRange();
|
|
|
|
return getNameQualifier()->Range;
|
|
}
|
|
|
|
/// \brief If the name was qualified, retrieves the nested-name-specifier
|
|
/// that precedes the name. Otherwise, returns NULL.
|
|
NestedNameSpecifier *getQualifier() const {
|
|
if (!hasQualifier())
|
|
return 0;
|
|
|
|
return getNameQualifier()->NNS;
|
|
}
|
|
|
|
/// \brief Determines whether this member expression actually had a C++
|
|
/// template argument list explicitly specified, e.g., x.f<int>.
|
|
bool hasExplicitTemplateArgumentList() const {
|
|
return DecoratedD.getInt() & HasExplicitTemplateArgumentListFlag;
|
|
}
|
|
|
|
/// \brief Retrieve the location of the left angle bracket following the
|
|
/// member name ('<'), if any.
|
|
SourceLocation getLAngleLoc() const {
|
|
if (!hasExplicitTemplateArgumentList())
|
|
return SourceLocation();
|
|
|
|
return getExplicitTemplateArgumentList()->LAngleLoc;
|
|
}
|
|
|
|
/// \brief Retrieve the template arguments provided as part of this
|
|
/// template-id.
|
|
const TemplateArgumentLoc *getTemplateArgs() const {
|
|
if (!hasExplicitTemplateArgumentList())
|
|
return 0;
|
|
|
|
return getExplicitTemplateArgumentList()->getTemplateArgs();
|
|
}
|
|
|
|
/// \brief Retrieve the number of template arguments provided as part of this
|
|
/// template-id.
|
|
unsigned getNumTemplateArgs() const {
|
|
if (!hasExplicitTemplateArgumentList())
|
|
return 0;
|
|
|
|
return getExplicitTemplateArgumentList()->NumTemplateArgs;
|
|
}
|
|
|
|
/// \brief Retrieve the location of the right angle bracket following the
|
|
/// template arguments ('>').
|
|
SourceLocation getRAngleLoc() const {
|
|
if (!hasExplicitTemplateArgumentList())
|
|
return SourceLocation();
|
|
|
|
return getExplicitTemplateArgumentList()->RAngleLoc;
|
|
}
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == DeclRefExprClass ||
|
|
T->getStmtClass() == CXXConditionDeclExprClass;
|
|
}
|
|
static bool classof(const DeclRefExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// PredefinedExpr - [C99 6.4.2.2] - A predefined identifier such as __func__.
|
|
class PredefinedExpr : public Expr {
|
|
public:
|
|
enum IdentType {
|
|
Func,
|
|
Function,
|
|
PrettyFunction
|
|
};
|
|
|
|
private:
|
|
SourceLocation Loc;
|
|
IdentType Type;
|
|
public:
|
|
PredefinedExpr(SourceLocation l, QualType type, IdentType IT)
|
|
: Expr(PredefinedExprClass, type, type->isDependentType(),
|
|
type->isDependentType()), Loc(l), Type(IT) {}
|
|
|
|
/// \brief Construct an empty predefined expression.
|
|
explicit PredefinedExpr(EmptyShell Empty)
|
|
: Expr(PredefinedExprClass, Empty) { }
|
|
|
|
IdentType getIdentType() const { return Type; }
|
|
void setIdentType(IdentType IT) { Type = IT; }
|
|
|
|
SourceLocation getLocation() const { return Loc; }
|
|
void setLocation(SourceLocation L) { Loc = L; }
|
|
|
|
static std::string ComputeName(ASTContext &Context, IdentType IT,
|
|
const Decl *CurrentDecl);
|
|
|
|
virtual SourceRange getSourceRange() const { return SourceRange(Loc); }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == PredefinedExprClass;
|
|
}
|
|
static bool classof(const PredefinedExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
class IntegerLiteral : public Expr {
|
|
llvm::APInt Value;
|
|
SourceLocation Loc;
|
|
public:
|
|
// type should be IntTy, LongTy, LongLongTy, UnsignedIntTy, UnsignedLongTy,
|
|
// or UnsignedLongLongTy
|
|
IntegerLiteral(const llvm::APInt &V, QualType type, SourceLocation l)
|
|
: Expr(IntegerLiteralClass, type), Value(V), Loc(l) {
|
|
assert(type->isIntegerType() && "Illegal type in IntegerLiteral");
|
|
}
|
|
|
|
/// \brief Construct an empty integer literal.
|
|
explicit IntegerLiteral(EmptyShell Empty)
|
|
: Expr(IntegerLiteralClass, Empty) { }
|
|
|
|
const llvm::APInt &getValue() const { return Value; }
|
|
virtual SourceRange getSourceRange() const { return SourceRange(Loc); }
|
|
|
|
/// \brief Retrieve the location of the literal.
|
|
SourceLocation getLocation() const { return Loc; }
|
|
|
|
void setValue(const llvm::APInt &Val) { Value = Val; }
|
|
void setLocation(SourceLocation Location) { Loc = Location; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == IntegerLiteralClass;
|
|
}
|
|
static bool classof(const IntegerLiteral *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
class CharacterLiteral : public Expr {
|
|
unsigned Value;
|
|
SourceLocation Loc;
|
|
bool IsWide;
|
|
public:
|
|
// type should be IntTy
|
|
CharacterLiteral(unsigned value, bool iswide, QualType type, SourceLocation l)
|
|
: Expr(CharacterLiteralClass, type), Value(value), Loc(l), IsWide(iswide) {
|
|
}
|
|
|
|
/// \brief Construct an empty character literal.
|
|
CharacterLiteral(EmptyShell Empty) : Expr(CharacterLiteralClass, Empty) { }
|
|
|
|
SourceLocation getLocation() const { return Loc; }
|
|
bool isWide() const { return IsWide; }
|
|
|
|
virtual SourceRange getSourceRange() const { return SourceRange(Loc); }
|
|
|
|
unsigned getValue() const { return Value; }
|
|
|
|
void setLocation(SourceLocation Location) { Loc = Location; }
|
|
void setWide(bool W) { IsWide = W; }
|
|
void setValue(unsigned Val) { Value = Val; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == CharacterLiteralClass;
|
|
}
|
|
static bool classof(const CharacterLiteral *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
class FloatingLiteral : public Expr {
|
|
llvm::APFloat Value;
|
|
bool IsExact : 1;
|
|
SourceLocation Loc;
|
|
public:
|
|
FloatingLiteral(const llvm::APFloat &V, bool isexact,
|
|
QualType Type, SourceLocation L)
|
|
: Expr(FloatingLiteralClass, Type), Value(V), IsExact(isexact), Loc(L) {}
|
|
|
|
/// \brief Construct an empty floating-point literal.
|
|
explicit FloatingLiteral(EmptyShell Empty)
|
|
: Expr(FloatingLiteralClass, Empty), Value(0.0) { }
|
|
|
|
const llvm::APFloat &getValue() const { return Value; }
|
|
void setValue(const llvm::APFloat &Val) { Value = Val; }
|
|
|
|
bool isExact() const { return IsExact; }
|
|
void setExact(bool E) { IsExact = E; }
|
|
|
|
/// getValueAsApproximateDouble - This returns the value as an inaccurate
|
|
/// double. Note that this may cause loss of precision, but is useful for
|
|
/// debugging dumps, etc.
|
|
double getValueAsApproximateDouble() const;
|
|
|
|
SourceLocation getLocation() const { return Loc; }
|
|
void setLocation(SourceLocation L) { Loc = L; }
|
|
|
|
// FIXME: The logic for computing the value of a predefined expr should go
|
|
// into a method here that takes the inner-most code decl (a block, function
|
|
// or objc method) that the expr lives in. This would allow sema and codegen
|
|
// to be consistent for things like sizeof(__func__) etc.
|
|
|
|
virtual SourceRange getSourceRange() const { return SourceRange(Loc); }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == FloatingLiteralClass;
|
|
}
|
|
static bool classof(const FloatingLiteral *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// ImaginaryLiteral - We support imaginary integer and floating point literals,
|
|
/// like "1.0i". We represent these as a wrapper around FloatingLiteral and
|
|
/// IntegerLiteral classes. Instances of this class always have a Complex type
|
|
/// whose element type matches the subexpression.
|
|
///
|
|
class ImaginaryLiteral : public Expr {
|
|
Stmt *Val;
|
|
public:
|
|
ImaginaryLiteral(Expr *val, QualType Ty)
|
|
: Expr(ImaginaryLiteralClass, Ty), Val(val) {}
|
|
|
|
/// \brief Build an empty imaginary literal.
|
|
explicit ImaginaryLiteral(EmptyShell Empty)
|
|
: Expr(ImaginaryLiteralClass, Empty) { }
|
|
|
|
const Expr *getSubExpr() const { return cast<Expr>(Val); }
|
|
Expr *getSubExpr() { return cast<Expr>(Val); }
|
|
void setSubExpr(Expr *E) { Val = E; }
|
|
|
|
virtual SourceRange getSourceRange() const { return Val->getSourceRange(); }
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ImaginaryLiteralClass;
|
|
}
|
|
static bool classof(const ImaginaryLiteral *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// StringLiteral - This represents a string literal expression, e.g. "foo"
|
|
/// or L"bar" (wide strings). The actual string is returned by getStrData()
|
|
/// is NOT null-terminated, and the length of the string is determined by
|
|
/// calling getByteLength(). The C type for a string is always a
|
|
/// ConstantArrayType. In C++, the char type is const qualified, in C it is
|
|
/// not.
|
|
///
|
|
/// Note that strings in C can be formed by concatenation of multiple string
|
|
/// literal pptokens in translation phase #6. This keeps track of the locations
|
|
/// of each of these pieces.
|
|
///
|
|
/// Strings in C can also be truncated and extended by assigning into arrays,
|
|
/// e.g. with constructs like:
|
|
/// char X[2] = "foobar";
|
|
/// In this case, getByteLength() will return 6, but the string literal will
|
|
/// have type "char[2]".
|
|
class StringLiteral : public Expr {
|
|
const char *StrData;
|
|
unsigned ByteLength;
|
|
bool IsWide;
|
|
unsigned NumConcatenated;
|
|
SourceLocation TokLocs[1];
|
|
|
|
StringLiteral(QualType Ty) : Expr(StringLiteralClass, Ty) {}
|
|
|
|
protected:
|
|
virtual void DoDestroy(ASTContext &C);
|
|
|
|
public:
|
|
/// This is the "fully general" constructor that allows representation of
|
|
/// strings formed from multiple concatenated tokens.
|
|
static StringLiteral *Create(ASTContext &C, const char *StrData,
|
|
unsigned ByteLength, bool Wide, QualType Ty,
|
|
const SourceLocation *Loc, unsigned NumStrs);
|
|
|
|
/// Simple constructor for string literals made from one token.
|
|
static StringLiteral *Create(ASTContext &C, const char *StrData,
|
|
unsigned ByteLength,
|
|
bool Wide, QualType Ty, SourceLocation Loc) {
|
|
return Create(C, StrData, ByteLength, Wide, Ty, &Loc, 1);
|
|
}
|
|
|
|
/// \brief Construct an empty string literal.
|
|
static StringLiteral *CreateEmpty(ASTContext &C, unsigned NumStrs);
|
|
|
|
llvm::StringRef getString() const {
|
|
return llvm::StringRef(StrData, ByteLength);
|
|
}
|
|
// FIXME: These are deprecated, replace with StringRef.
|
|
const char *getStrData() const { return StrData; }
|
|
unsigned getByteLength() const { return ByteLength; }
|
|
|
|
/// \brief Sets the string data to the given string data.
|
|
void setString(ASTContext &C, llvm::StringRef Str);
|
|
|
|
bool isWide() const { return IsWide; }
|
|
void setWide(bool W) { IsWide = W; }
|
|
|
|
bool containsNonAsciiOrNull() const {
|
|
llvm::StringRef Str = getString();
|
|
for (unsigned i = 0, e = Str.size(); i != e; ++i)
|
|
if (!isascii(Str[i]) || !Str[i])
|
|
return true;
|
|
return false;
|
|
}
|
|
/// getNumConcatenated - Get the number of string literal tokens that were
|
|
/// concatenated in translation phase #6 to form this string literal.
|
|
unsigned getNumConcatenated() const { return NumConcatenated; }
|
|
|
|
SourceLocation getStrTokenLoc(unsigned TokNum) const {
|
|
assert(TokNum < NumConcatenated && "Invalid tok number");
|
|
return TokLocs[TokNum];
|
|
}
|
|
void setStrTokenLoc(unsigned TokNum, SourceLocation L) {
|
|
assert(TokNum < NumConcatenated && "Invalid tok number");
|
|
TokLocs[TokNum] = L;
|
|
}
|
|
|
|
typedef const SourceLocation *tokloc_iterator;
|
|
tokloc_iterator tokloc_begin() const { return TokLocs; }
|
|
tokloc_iterator tokloc_end() const { return TokLocs+NumConcatenated; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(TokLocs[0], TokLocs[NumConcatenated-1]);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == StringLiteralClass;
|
|
}
|
|
static bool classof(const StringLiteral *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// ParenExpr - This represents a parethesized expression, e.g. "(1)". This
|
|
/// AST node is only formed if full location information is requested.
|
|
class ParenExpr : public Expr {
|
|
SourceLocation L, R;
|
|
Stmt *Val;
|
|
public:
|
|
ParenExpr(SourceLocation l, SourceLocation r, Expr *val)
|
|
: Expr(ParenExprClass, val->getType(),
|
|
val->isTypeDependent(), val->isValueDependent()),
|
|
L(l), R(r), Val(val) {}
|
|
|
|
/// \brief Construct an empty parenthesized expression.
|
|
explicit ParenExpr(EmptyShell Empty)
|
|
: Expr(ParenExprClass, Empty) { }
|
|
|
|
const Expr *getSubExpr() const { return cast<Expr>(Val); }
|
|
Expr *getSubExpr() { return cast<Expr>(Val); }
|
|
void setSubExpr(Expr *E) { Val = E; }
|
|
|
|
virtual SourceRange getSourceRange() const { return SourceRange(L, R); }
|
|
|
|
/// \brief Get the location of the left parentheses '('.
|
|
SourceLocation getLParen() const { return L; }
|
|
void setLParen(SourceLocation Loc) { L = Loc; }
|
|
|
|
/// \brief Get the location of the right parentheses ')'.
|
|
SourceLocation getRParen() const { return R; }
|
|
void setRParen(SourceLocation Loc) { R = Loc; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ParenExprClass;
|
|
}
|
|
static bool classof(const ParenExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
|
|
/// UnaryOperator - This represents the unary-expression's (except sizeof and
|
|
/// alignof), the postinc/postdec operators from postfix-expression, and various
|
|
/// extensions.
|
|
///
|
|
/// Notes on various nodes:
|
|
///
|
|
/// Real/Imag - These return the real/imag part of a complex operand. If
|
|
/// applied to a non-complex value, the former returns its operand and the
|
|
/// later returns zero in the type of the operand.
|
|
///
|
|
/// __builtin_offsetof(type, a.b[10]) is represented as a unary operator whose
|
|
/// subexpression is a compound literal with the various MemberExpr and
|
|
/// ArraySubscriptExpr's applied to it.
|
|
///
|
|
class UnaryOperator : public Expr {
|
|
public:
|
|
// Note that additions to this should also update the StmtVisitor class.
|
|
enum Opcode {
|
|
PostInc, PostDec, // [C99 6.5.2.4] Postfix increment and decrement operators
|
|
PreInc, PreDec, // [C99 6.5.3.1] Prefix increment and decrement operators.
|
|
AddrOf, Deref, // [C99 6.5.3.2] Address and indirection operators.
|
|
Plus, Minus, // [C99 6.5.3.3] Unary arithmetic operators.
|
|
Not, LNot, // [C99 6.5.3.3] Unary arithmetic operators.
|
|
Real, Imag, // "__real expr"/"__imag expr" Extension.
|
|
Extension, // __extension__ marker.
|
|
OffsetOf // __builtin_offsetof
|
|
};
|
|
private:
|
|
Stmt *Val;
|
|
Opcode Opc;
|
|
SourceLocation Loc;
|
|
public:
|
|
|
|
UnaryOperator(Expr *input, Opcode opc, QualType type, SourceLocation l)
|
|
: Expr(UnaryOperatorClass, type,
|
|
input->isTypeDependent() && opc != OffsetOf,
|
|
input->isValueDependent()),
|
|
Val(input), Opc(opc), Loc(l) {}
|
|
|
|
/// \brief Build an empty unary operator.
|
|
explicit UnaryOperator(EmptyShell Empty)
|
|
: Expr(UnaryOperatorClass, Empty), Opc(AddrOf) { }
|
|
|
|
Opcode getOpcode() const { return Opc; }
|
|
void setOpcode(Opcode O) { Opc = O; }
|
|
|
|
Expr *getSubExpr() const { return cast<Expr>(Val); }
|
|
void setSubExpr(Expr *E) { Val = E; }
|
|
|
|
/// getOperatorLoc - Return the location of the operator.
|
|
SourceLocation getOperatorLoc() const { return Loc; }
|
|
void setOperatorLoc(SourceLocation L) { Loc = L; }
|
|
|
|
/// isPostfix - Return true if this is a postfix operation, like x++.
|
|
static bool isPostfix(Opcode Op) {
|
|
return Op == PostInc || Op == PostDec;
|
|
}
|
|
|
|
/// isPostfix - Return true if this is a prefix operation, like --x.
|
|
static bool isPrefix(Opcode Op) {
|
|
return Op == PreInc || Op == PreDec;
|
|
}
|
|
|
|
bool isPrefix() const { return isPrefix(Opc); }
|
|
bool isPostfix() const { return isPostfix(Opc); }
|
|
bool isIncrementOp() const {return Opc==PreInc || Opc==PostInc; }
|
|
bool isIncrementDecrementOp() const { return Opc>=PostInc && Opc<=PreDec; }
|
|
bool isOffsetOfOp() const { return Opc == OffsetOf; }
|
|
static bool isArithmeticOp(Opcode Op) { return Op >= Plus && Op <= LNot; }
|
|
bool isArithmeticOp() const { return isArithmeticOp(Opc); }
|
|
|
|
/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
|
|
/// corresponds to, e.g. "sizeof" or "[pre]++"
|
|
static const char *getOpcodeStr(Opcode Op);
|
|
|
|
/// \brief Retrieve the unary opcode that corresponds to the given
|
|
/// overloaded operator.
|
|
static Opcode getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix);
|
|
|
|
/// \brief Retrieve the overloaded operator kind that corresponds to
|
|
/// the given unary opcode.
|
|
static OverloadedOperatorKind getOverloadedOperator(Opcode Opc);
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
if (isPostfix())
|
|
return SourceRange(Val->getLocStart(), Loc);
|
|
else
|
|
return SourceRange(Loc, Val->getLocEnd());
|
|
}
|
|
virtual SourceLocation getExprLoc() const { return Loc; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == UnaryOperatorClass;
|
|
}
|
|
static bool classof(const UnaryOperator *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// SizeOfAlignOfExpr - [C99 6.5.3.4] - This is for sizeof/alignof, both of
|
|
/// types and expressions.
|
|
class SizeOfAlignOfExpr : public Expr {
|
|
bool isSizeof : 1; // true if sizeof, false if alignof.
|
|
bool isType : 1; // true if operand is a type, false if an expression
|
|
union {
|
|
DeclaratorInfo *Ty;
|
|
Stmt *Ex;
|
|
} Argument;
|
|
SourceLocation OpLoc, RParenLoc;
|
|
|
|
protected:
|
|
virtual void DoDestroy(ASTContext& C);
|
|
|
|
public:
|
|
SizeOfAlignOfExpr(bool issizeof, DeclaratorInfo *DInfo,
|
|
QualType resultType, SourceLocation op,
|
|
SourceLocation rp) :
|
|
Expr(SizeOfAlignOfExprClass, resultType,
|
|
false, // Never type-dependent (C++ [temp.dep.expr]p3).
|
|
// Value-dependent if the argument is type-dependent.
|
|
DInfo->getType()->isDependentType()),
|
|
isSizeof(issizeof), isType(true), OpLoc(op), RParenLoc(rp) {
|
|
Argument.Ty = DInfo;
|
|
}
|
|
|
|
SizeOfAlignOfExpr(bool issizeof, Expr *E,
|
|
QualType resultType, SourceLocation op,
|
|
SourceLocation rp) :
|
|
Expr(SizeOfAlignOfExprClass, resultType,
|
|
false, // Never type-dependent (C++ [temp.dep.expr]p3).
|
|
// Value-dependent if the argument is type-dependent.
|
|
E->isTypeDependent()),
|
|
isSizeof(issizeof), isType(false), OpLoc(op), RParenLoc(rp) {
|
|
Argument.Ex = E;
|
|
}
|
|
|
|
/// \brief Construct an empty sizeof/alignof expression.
|
|
explicit SizeOfAlignOfExpr(EmptyShell Empty)
|
|
: Expr(SizeOfAlignOfExprClass, Empty) { }
|
|
|
|
bool isSizeOf() const { return isSizeof; }
|
|
void setSizeof(bool S) { isSizeof = S; }
|
|
|
|
bool isArgumentType() const { return isType; }
|
|
QualType getArgumentType() const {
|
|
return getArgumentTypeInfo()->getType();
|
|
}
|
|
DeclaratorInfo *getArgumentTypeInfo() const {
|
|
assert(isArgumentType() && "calling getArgumentType() when arg is expr");
|
|
return Argument.Ty;
|
|
}
|
|
Expr *getArgumentExpr() {
|
|
assert(!isArgumentType() && "calling getArgumentExpr() when arg is type");
|
|
return static_cast<Expr*>(Argument.Ex);
|
|
}
|
|
const Expr *getArgumentExpr() const {
|
|
return const_cast<SizeOfAlignOfExpr*>(this)->getArgumentExpr();
|
|
}
|
|
|
|
void setArgument(Expr *E) { Argument.Ex = E; isType = false; }
|
|
void setArgument(DeclaratorInfo *DInfo) {
|
|
Argument.Ty = DInfo;
|
|
isType = true;
|
|
}
|
|
|
|
/// Gets the argument type, or the type of the argument expression, whichever
|
|
/// is appropriate.
|
|
QualType getTypeOfArgument() const {
|
|
return isArgumentType() ? getArgumentType() : getArgumentExpr()->getType();
|
|
}
|
|
|
|
SourceLocation getOperatorLoc() const { return OpLoc; }
|
|
void setOperatorLoc(SourceLocation L) { OpLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(OpLoc, RParenLoc);
|
|
}
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == SizeOfAlignOfExprClass;
|
|
}
|
|
static bool classof(const SizeOfAlignOfExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Postfix Operators.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
/// ArraySubscriptExpr - [C99 6.5.2.1] Array Subscripting.
|
|
class ArraySubscriptExpr : public Expr {
|
|
enum { LHS, RHS, END_EXPR=2 };
|
|
Stmt* SubExprs[END_EXPR];
|
|
SourceLocation RBracketLoc;
|
|
public:
|
|
ArraySubscriptExpr(Expr *lhs, Expr *rhs, QualType t,
|
|
SourceLocation rbracketloc)
|
|
: Expr(ArraySubscriptExprClass, t,
|
|
lhs->isTypeDependent() || rhs->isTypeDependent(),
|
|
lhs->isValueDependent() || rhs->isValueDependent()),
|
|
RBracketLoc(rbracketloc) {
|
|
SubExprs[LHS] = lhs;
|
|
SubExprs[RHS] = rhs;
|
|
}
|
|
|
|
/// \brief Create an empty array subscript expression.
|
|
explicit ArraySubscriptExpr(EmptyShell Shell)
|
|
: Expr(ArraySubscriptExprClass, Shell) { }
|
|
|
|
/// An array access can be written A[4] or 4[A] (both are equivalent).
|
|
/// - getBase() and getIdx() always present the normalized view: A[4].
|
|
/// In this case getBase() returns "A" and getIdx() returns "4".
|
|
/// - getLHS() and getRHS() present the syntactic view. e.g. for
|
|
/// 4[A] getLHS() returns "4".
|
|
/// Note: Because vector element access is also written A[4] we must
|
|
/// predicate the format conversion in getBase and getIdx only on the
|
|
/// the type of the RHS, as it is possible for the LHS to be a vector of
|
|
/// integer type
|
|
Expr *getLHS() { return cast<Expr>(SubExprs[LHS]); }
|
|
const Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); }
|
|
void setLHS(Expr *E) { SubExprs[LHS] = E; }
|
|
|
|
Expr *getRHS() { return cast<Expr>(SubExprs[RHS]); }
|
|
const Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); }
|
|
void setRHS(Expr *E) { SubExprs[RHS] = E; }
|
|
|
|
Expr *getBase() {
|
|
return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS());
|
|
}
|
|
|
|
const Expr *getBase() const {
|
|
return cast<Expr>(getRHS()->getType()->isIntegerType() ? getLHS():getRHS());
|
|
}
|
|
|
|
Expr *getIdx() {
|
|
return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS());
|
|
}
|
|
|
|
const Expr *getIdx() const {
|
|
return cast<Expr>(getRHS()->getType()->isIntegerType() ? getRHS():getLHS());
|
|
}
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getLHS()->getLocStart(), RBracketLoc);
|
|
}
|
|
|
|
SourceLocation getRBracketLoc() const { return RBracketLoc; }
|
|
void setRBracketLoc(SourceLocation L) { RBracketLoc = L; }
|
|
|
|
virtual SourceLocation getExprLoc() const { return getBase()->getExprLoc(); }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ArraySubscriptExprClass;
|
|
}
|
|
static bool classof(const ArraySubscriptExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
|
|
/// CallExpr - Represents a function call (C99 6.5.2.2, C++ [expr.call]).
|
|
/// CallExpr itself represents a normal function call, e.g., "f(x, 2)",
|
|
/// while its subclasses may represent alternative syntax that (semantically)
|
|
/// results in a function call. For example, CXXOperatorCallExpr is
|
|
/// a subclass for overloaded operator calls that use operator syntax, e.g.,
|
|
/// "str1 + str2" to resolve to a function call.
|
|
class CallExpr : public Expr {
|
|
enum { FN=0, ARGS_START=1 };
|
|
Stmt **SubExprs;
|
|
unsigned NumArgs;
|
|
SourceLocation RParenLoc;
|
|
|
|
protected:
|
|
// This version of the constructor is for derived classes.
|
|
CallExpr(ASTContext& C, StmtClass SC, Expr *fn, Expr **args, unsigned numargs,
|
|
QualType t, SourceLocation rparenloc);
|
|
|
|
virtual void DoDestroy(ASTContext& C);
|
|
|
|
public:
|
|
CallExpr(ASTContext& C, Expr *fn, Expr **args, unsigned numargs, QualType t,
|
|
SourceLocation rparenloc);
|
|
|
|
/// \brief Build an empty call expression.
|
|
CallExpr(ASTContext &C, StmtClass SC, EmptyShell Empty);
|
|
|
|
~CallExpr() {}
|
|
|
|
const Expr *getCallee() const { return cast<Expr>(SubExprs[FN]); }
|
|
Expr *getCallee() { return cast<Expr>(SubExprs[FN]); }
|
|
void setCallee(Expr *F) { SubExprs[FN] = F; }
|
|
|
|
/// \brief If the callee is a FunctionDecl, return it. Otherwise return 0.
|
|
FunctionDecl *getDirectCallee();
|
|
const FunctionDecl *getDirectCallee() const {
|
|
return const_cast<CallExpr*>(this)->getDirectCallee();
|
|
}
|
|
|
|
/// getNumArgs - Return the number of actual arguments to this call.
|
|
///
|
|
unsigned getNumArgs() const { return NumArgs; }
|
|
|
|
/// getArg - Return the specified argument.
|
|
Expr *getArg(unsigned Arg) {
|
|
assert(Arg < NumArgs && "Arg access out of range!");
|
|
return cast<Expr>(SubExprs[Arg+ARGS_START]);
|
|
}
|
|
const Expr *getArg(unsigned Arg) const {
|
|
assert(Arg < NumArgs && "Arg access out of range!");
|
|
return cast<Expr>(SubExprs[Arg+ARGS_START]);
|
|
}
|
|
|
|
/// setArg - Set the specified argument.
|
|
void setArg(unsigned Arg, Expr *ArgExpr) {
|
|
assert(Arg < NumArgs && "Arg access out of range!");
|
|
SubExprs[Arg+ARGS_START] = ArgExpr;
|
|
}
|
|
|
|
/// setNumArgs - This changes the number of arguments present in this call.
|
|
/// Any orphaned expressions are deleted by this, and any new operands are set
|
|
/// to null.
|
|
void setNumArgs(ASTContext& C, unsigned NumArgs);
|
|
|
|
typedef ExprIterator arg_iterator;
|
|
typedef ConstExprIterator const_arg_iterator;
|
|
|
|
arg_iterator arg_begin() { return SubExprs+ARGS_START; }
|
|
arg_iterator arg_end() { return SubExprs+ARGS_START+getNumArgs(); }
|
|
const_arg_iterator arg_begin() const { return SubExprs+ARGS_START; }
|
|
const_arg_iterator arg_end() const { return SubExprs+ARGS_START+getNumArgs();}
|
|
|
|
/// getNumCommas - Return the number of commas that must have been present in
|
|
/// this function call.
|
|
unsigned getNumCommas() const { return NumArgs ? NumArgs - 1 : 0; }
|
|
|
|
/// isBuiltinCall - If this is a call to a builtin, return the builtin ID. If
|
|
/// not, return 0.
|
|
unsigned isBuiltinCall(ASTContext &Context) const;
|
|
|
|
/// getCallReturnType - Get the return type of the call expr. This is not
|
|
/// always the type of the expr itself, if the return type is a reference
|
|
/// type.
|
|
QualType getCallReturnType() const;
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getCallee()->getLocStart(), RParenLoc);
|
|
}
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == CallExprClass ||
|
|
T->getStmtClass() == CXXOperatorCallExprClass ||
|
|
T->getStmtClass() == CXXMemberCallExprClass;
|
|
}
|
|
static bool classof(const CallExpr *) { return true; }
|
|
static bool classof(const CXXOperatorCallExpr *) { return true; }
|
|
static bool classof(const CXXMemberCallExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// MemberExpr - [C99 6.5.2.3] Structure and Union Members. X->F and X.F.
|
|
///
|
|
class MemberExpr : public Expr {
|
|
/// Base - the expression for the base pointer or structure references. In
|
|
/// X.F, this is "X".
|
|
Stmt *Base;
|
|
|
|
/// MemberDecl - This is the decl being referenced by the field/member name.
|
|
/// In X.F, this is the decl referenced by F.
|
|
NamedDecl *MemberDecl;
|
|
|
|
/// MemberLoc - This is the location of the member name.
|
|
SourceLocation MemberLoc;
|
|
|
|
/// IsArrow - True if this is "X->F", false if this is "X.F".
|
|
bool IsArrow : 1;
|
|
|
|
/// \brief True if this member expression used a nested-name-specifier to
|
|
/// refer to the member, e.g., "x->Base::f". When true, a NameQualifier
|
|
/// structure is allocated immediately after the MemberExpr.
|
|
bool HasQualifier : 1;
|
|
|
|
/// \brief True if this member expression specified a template argument list
|
|
/// explicitly, e.g., x->f<int>. When true, an ExplicitTemplateArgumentList
|
|
/// structure (and its TemplateArguments) are allocated immediately after
|
|
/// the MemberExpr or, if the member expression also has a qualifier, after
|
|
/// the NameQualifier structure.
|
|
bool HasExplicitTemplateArgumentList : 1;
|
|
|
|
/// \brief Retrieve the qualifier that preceded the member name, if any.
|
|
NameQualifier *getMemberQualifier() {
|
|
if (!HasQualifier)
|
|
return 0;
|
|
|
|
return reinterpret_cast<NameQualifier *> (this + 1);
|
|
}
|
|
|
|
/// \brief Retrieve the qualifier that preceded the member name, if any.
|
|
const NameQualifier *getMemberQualifier() const {
|
|
return const_cast<MemberExpr *>(this)->getMemberQualifier();
|
|
}
|
|
|
|
/// \brief Retrieve the explicit template argument list that followed the
|
|
/// member template name, if any.
|
|
ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() {
|
|
if (!HasExplicitTemplateArgumentList)
|
|
return 0;
|
|
|
|
if (!HasQualifier)
|
|
return reinterpret_cast<ExplicitTemplateArgumentList *>(this + 1);
|
|
|
|
return reinterpret_cast<ExplicitTemplateArgumentList *>(
|
|
getMemberQualifier() + 1);
|
|
}
|
|
|
|
/// \brief Retrieve the explicit template argument list that followed the
|
|
/// member template name, if any.
|
|
const ExplicitTemplateArgumentList *getExplicitTemplateArgumentList() const {
|
|
return const_cast<MemberExpr *>(this)->getExplicitTemplateArgumentList();
|
|
}
|
|
|
|
MemberExpr(Expr *base, bool isarrow, NestedNameSpecifier *qual,
|
|
SourceRange qualrange, NamedDecl *memberdecl, SourceLocation l,
|
|
bool has_explicit, SourceLocation langle,
|
|
const TemplateArgumentLoc *targs, unsigned numtargs,
|
|
SourceLocation rangle, QualType ty);
|
|
|
|
public:
|
|
MemberExpr(Expr *base, bool isarrow, NamedDecl *memberdecl, SourceLocation l,
|
|
QualType ty)
|
|
: Expr(MemberExprClass, ty,
|
|
base->isTypeDependent(), base->isValueDependent()),
|
|
Base(base), MemberDecl(memberdecl), MemberLoc(l), IsArrow(isarrow),
|
|
HasQualifier(false), HasExplicitTemplateArgumentList(false) {}
|
|
|
|
/// \brief Build an empty member reference expression.
|
|
explicit MemberExpr(EmptyShell Empty)
|
|
: Expr(MemberExprClass, Empty), HasQualifier(false),
|
|
HasExplicitTemplateArgumentList(false) { }
|
|
|
|
static MemberExpr *Create(ASTContext &C, Expr *base, bool isarrow,
|
|
NestedNameSpecifier *qual, SourceRange qualrange,
|
|
NamedDecl *memberdecl,
|
|
SourceLocation l,
|
|
bool has_explicit,
|
|
SourceLocation langle,
|
|
const TemplateArgumentLoc *targs,
|
|
unsigned numtargs,
|
|
SourceLocation rangle,
|
|
QualType ty);
|
|
|
|
void setBase(Expr *E) { Base = E; }
|
|
Expr *getBase() const { return cast<Expr>(Base); }
|
|
|
|
/// \brief Retrieve the member declaration to which this expression refers.
|
|
///
|
|
/// The returned declaration will either be a FieldDecl or (in C++)
|
|
/// a CXXMethodDecl.
|
|
NamedDecl *getMemberDecl() const { return MemberDecl; }
|
|
void setMemberDecl(NamedDecl *D) { MemberDecl = D; }
|
|
|
|
/// \brief Determines whether this member expression actually had
|
|
/// a C++ nested-name-specifier prior to the name of the member, e.g.,
|
|
/// x->Base::foo.
|
|
bool hasQualifier() const { return HasQualifier; }
|
|
|
|
/// \brief If the member name was qualified, retrieves the source range of
|
|
/// the nested-name-specifier that precedes the member name. Otherwise,
|
|
/// returns an empty source range.
|
|
SourceRange getQualifierRange() const {
|
|
if (!HasQualifier)
|
|
return SourceRange();
|
|
|
|
return getMemberQualifier()->Range;
|
|
}
|
|
|
|
/// \brief If the member name was qualified, retrieves the
|
|
/// nested-name-specifier that precedes the member name. Otherwise, returns
|
|
/// NULL.
|
|
NestedNameSpecifier *getQualifier() const {
|
|
if (!HasQualifier)
|
|
return 0;
|
|
|
|
return getMemberQualifier()->NNS;
|
|
}
|
|
|
|
/// \brief Determines whether this member expression actually had a C++
|
|
/// template argument list explicitly specified, e.g., x.f<int>.
|
|
bool hasExplicitTemplateArgumentList() {
|
|
return HasExplicitTemplateArgumentList;
|
|
}
|
|
|
|
/// \brief Retrieve the location of the left angle bracket following the
|
|
/// member name ('<'), if any.
|
|
SourceLocation getLAngleLoc() const {
|
|
if (!HasExplicitTemplateArgumentList)
|
|
return SourceLocation();
|
|
|
|
return getExplicitTemplateArgumentList()->LAngleLoc;
|
|
}
|
|
|
|
/// \brief Retrieve the template arguments provided as part of this
|
|
/// template-id.
|
|
const TemplateArgumentLoc *getTemplateArgs() const {
|
|
if (!HasExplicitTemplateArgumentList)
|
|
return 0;
|
|
|
|
return getExplicitTemplateArgumentList()->getTemplateArgs();
|
|
}
|
|
|
|
/// \brief Retrieve the number of template arguments provided as part of this
|
|
/// template-id.
|
|
unsigned getNumTemplateArgs() const {
|
|
if (!HasExplicitTemplateArgumentList)
|
|
return 0;
|
|
|
|
return getExplicitTemplateArgumentList()->NumTemplateArgs;
|
|
}
|
|
|
|
/// \brief Retrieve the location of the right angle bracket following the
|
|
/// template arguments ('>').
|
|
SourceLocation getRAngleLoc() const {
|
|
if (!HasExplicitTemplateArgumentList)
|
|
return SourceLocation();
|
|
|
|
return getExplicitTemplateArgumentList()->RAngleLoc;
|
|
}
|
|
|
|
bool isArrow() const { return IsArrow; }
|
|
void setArrow(bool A) { IsArrow = A; }
|
|
|
|
/// getMemberLoc - Return the location of the "member", in X->F, it is the
|
|
/// location of 'F'.
|
|
SourceLocation getMemberLoc() const { return MemberLoc; }
|
|
void setMemberLoc(SourceLocation L) { MemberLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
// If we have an implicit base (like a C++ implicit this),
|
|
// make sure not to return its location
|
|
SourceLocation EndLoc = MemberLoc;
|
|
if (HasExplicitTemplateArgumentList)
|
|
EndLoc = getRAngleLoc();
|
|
|
|
SourceLocation BaseLoc = getBase()->getLocStart();
|
|
if (BaseLoc.isInvalid())
|
|
return SourceRange(MemberLoc, EndLoc);
|
|
return SourceRange(BaseLoc, EndLoc);
|
|
}
|
|
|
|
virtual SourceLocation getExprLoc() const { return MemberLoc; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == MemberExprClass;
|
|
}
|
|
static bool classof(const MemberExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// CompoundLiteralExpr - [C99 6.5.2.5]
|
|
///
|
|
class CompoundLiteralExpr : public Expr {
|
|
/// LParenLoc - If non-null, this is the location of the left paren in a
|
|
/// compound literal like "(int){4}". This can be null if this is a
|
|
/// synthesized compound expression.
|
|
SourceLocation LParenLoc;
|
|
Stmt *Init;
|
|
bool FileScope;
|
|
public:
|
|
CompoundLiteralExpr(SourceLocation lparenloc, QualType ty, Expr *init,
|
|
bool fileScope)
|
|
: Expr(CompoundLiteralExprClass, ty), LParenLoc(lparenloc), Init(init),
|
|
FileScope(fileScope) {}
|
|
|
|
/// \brief Construct an empty compound literal.
|
|
explicit CompoundLiteralExpr(EmptyShell Empty)
|
|
: Expr(CompoundLiteralExprClass, Empty) { }
|
|
|
|
const Expr *getInitializer() const { return cast<Expr>(Init); }
|
|
Expr *getInitializer() { return cast<Expr>(Init); }
|
|
void setInitializer(Expr *E) { Init = E; }
|
|
|
|
bool isFileScope() const { return FileScope; }
|
|
void setFileScope(bool FS) { FileScope = FS; }
|
|
|
|
SourceLocation getLParenLoc() const { return LParenLoc; }
|
|
void setLParenLoc(SourceLocation L) { LParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
// FIXME: Init should never be null.
|
|
if (!Init)
|
|
return SourceRange();
|
|
if (LParenLoc.isInvalid())
|
|
return Init->getSourceRange();
|
|
return SourceRange(LParenLoc, Init->getLocEnd());
|
|
}
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == CompoundLiteralExprClass;
|
|
}
|
|
static bool classof(const CompoundLiteralExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// CastExpr - Base class for type casts, including both implicit
|
|
/// casts (ImplicitCastExpr) and explicit casts that have some
|
|
/// representation in the source code (ExplicitCastExpr's derived
|
|
/// classes).
|
|
class CastExpr : public Expr {
|
|
public:
|
|
/// CastKind - the kind of cast this represents.
|
|
enum CastKind {
|
|
/// CK_Unknown - Unknown cast kind.
|
|
/// FIXME: The goal is to get rid of this and make all casts have a
|
|
/// kind so that the AST client doesn't have to try to figure out what's
|
|
/// going on.
|
|
CK_Unknown,
|
|
|
|
/// CK_BitCast - Used for reinterpret_cast.
|
|
CK_BitCast,
|
|
|
|
/// CK_NoOp - Used for const_cast.
|
|
CK_NoOp,
|
|
|
|
/// CK_BaseToDerived - Base to derived class casts.
|
|
CK_BaseToDerived,
|
|
|
|
/// CK_DerivedToBase - Derived to base class casts.
|
|
CK_DerivedToBase,
|
|
|
|
/// CK_Dynamic - Dynamic cast.
|
|
CK_Dynamic,
|
|
|
|
/// CK_ToUnion - Cast to union (GCC extension).
|
|
CK_ToUnion,
|
|
|
|
/// CK_ArrayToPointerDecay - Array to pointer decay.
|
|
CK_ArrayToPointerDecay,
|
|
|
|
// CK_FunctionToPointerDecay - Function to pointer decay.
|
|
CK_FunctionToPointerDecay,
|
|
|
|
/// CK_NullToMemberPointer - Null pointer to member pointer.
|
|
CK_NullToMemberPointer,
|
|
|
|
/// CK_BaseToDerivedMemberPointer - Member pointer in base class to
|
|
/// member pointer in derived class.
|
|
CK_BaseToDerivedMemberPointer,
|
|
|
|
/// CK_DerivedToBaseMemberPointer - Member pointer in derived class to
|
|
/// member pointer in base class.
|
|
CK_DerivedToBaseMemberPointer,
|
|
|
|
/// CK_UserDefinedConversion - Conversion using a user defined type
|
|
/// conversion function.
|
|
CK_UserDefinedConversion,
|
|
|
|
/// CK_ConstructorConversion - Conversion by constructor
|
|
CK_ConstructorConversion,
|
|
|
|
/// CK_IntegralToPointer - Integral to pointer
|
|
CK_IntegralToPointer,
|
|
|
|
/// CK_PointerToIntegral - Pointer to integral
|
|
CK_PointerToIntegral,
|
|
|
|
/// CK_ToVoid - Cast to void.
|
|
CK_ToVoid,
|
|
|
|
/// CK_VectorSplat - Casting from an integer/floating type to an extended
|
|
/// vector type with the same element type as the src type. Splats the
|
|
/// src expression into the destination expression.
|
|
CK_VectorSplat,
|
|
|
|
/// CK_IntegralCast - Casting between integral types of different size.
|
|
CK_IntegralCast,
|
|
|
|
/// CK_IntegralToFloating - Integral to floating point.
|
|
CK_IntegralToFloating,
|
|
|
|
/// CK_FloatingToIntegral - Floating point to integral.
|
|
CK_FloatingToIntegral,
|
|
|
|
/// CK_FloatingCast - Casting between floating types of different size.
|
|
CK_FloatingCast
|
|
};
|
|
|
|
private:
|
|
CastKind Kind;
|
|
Stmt *Op;
|
|
protected:
|
|
CastExpr(StmtClass SC, QualType ty, const CastKind kind, Expr *op) :
|
|
Expr(SC, ty,
|
|
// Cast expressions are type-dependent if the type is
|
|
// dependent (C++ [temp.dep.expr]p3).
|
|
ty->isDependentType(),
|
|
// Cast expressions are value-dependent if the type is
|
|
// dependent or if the subexpression is value-dependent.
|
|
ty->isDependentType() || (op && op->isValueDependent())),
|
|
Kind(kind), Op(op) {}
|
|
|
|
/// \brief Construct an empty cast.
|
|
CastExpr(StmtClass SC, EmptyShell Empty)
|
|
: Expr(SC, Empty) { }
|
|
|
|
public:
|
|
CastKind getCastKind() const { return Kind; }
|
|
void setCastKind(CastKind K) { Kind = K; }
|
|
const char *getCastKindName() const;
|
|
|
|
Expr *getSubExpr() { return cast<Expr>(Op); }
|
|
const Expr *getSubExpr() const { return cast<Expr>(Op); }
|
|
void setSubExpr(Expr *E) { Op = E; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
StmtClass SC = T->getStmtClass();
|
|
if (SC >= CXXNamedCastExprClass && SC <= CXXFunctionalCastExprClass)
|
|
return true;
|
|
|
|
if (SC >= ImplicitCastExprClass && SC <= CStyleCastExprClass)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
static bool classof(const CastExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// ImplicitCastExpr - Allows us to explicitly represent implicit type
|
|
/// conversions, which have no direct representation in the original
|
|
/// source code. For example: converting T[]->T*, void f()->void
|
|
/// (*f)(), float->double, short->int, etc.
|
|
///
|
|
/// In C, implicit casts always produce rvalues. However, in C++, an
|
|
/// implicit cast whose result is being bound to a reference will be
|
|
/// an lvalue. For example:
|
|
///
|
|
/// @code
|
|
/// class Base { };
|
|
/// class Derived : public Base { };
|
|
/// void f(Derived d) {
|
|
/// Base& b = d; // initializer is an ImplicitCastExpr to an lvalue of type Base
|
|
/// }
|
|
/// @endcode
|
|
class ImplicitCastExpr : public CastExpr {
|
|
/// LvalueCast - Whether this cast produces an lvalue.
|
|
bool LvalueCast;
|
|
|
|
public:
|
|
ImplicitCastExpr(QualType ty, CastKind kind, Expr *op, bool Lvalue) :
|
|
CastExpr(ImplicitCastExprClass, ty, kind, op), LvalueCast(Lvalue) { }
|
|
|
|
/// \brief Construct an empty implicit cast.
|
|
explicit ImplicitCastExpr(EmptyShell Shell)
|
|
: CastExpr(ImplicitCastExprClass, Shell) { }
|
|
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return getSubExpr()->getSourceRange();
|
|
}
|
|
|
|
/// isLvalueCast - Whether this cast produces an lvalue.
|
|
bool isLvalueCast() const { return LvalueCast; }
|
|
|
|
/// setLvalueCast - Set whether this cast produces an lvalue.
|
|
void setLvalueCast(bool Lvalue) { LvalueCast = Lvalue; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ImplicitCastExprClass;
|
|
}
|
|
static bool classof(const ImplicitCastExpr *) { return true; }
|
|
};
|
|
|
|
/// ExplicitCastExpr - An explicit cast written in the source
|
|
/// code.
|
|
///
|
|
/// This class is effectively an abstract class, because it provides
|
|
/// the basic representation of an explicitly-written cast without
|
|
/// specifying which kind of cast (C cast, functional cast, static
|
|
/// cast, etc.) was written; specific derived classes represent the
|
|
/// particular style of cast and its location information.
|
|
///
|
|
/// Unlike implicit casts, explicit cast nodes have two different
|
|
/// types: the type that was written into the source code, and the
|
|
/// actual type of the expression as determined by semantic
|
|
/// analysis. These types may differ slightly. For example, in C++ one
|
|
/// can cast to a reference type, which indicates that the resulting
|
|
/// expression will be an lvalue. The reference type, however, will
|
|
/// not be used as the type of the expression.
|
|
class ExplicitCastExpr : public CastExpr {
|
|
/// TypeAsWritten - The type that this expression is casting to, as
|
|
/// written in the source code.
|
|
QualType TypeAsWritten;
|
|
|
|
protected:
|
|
ExplicitCastExpr(StmtClass SC, QualType exprTy, CastKind kind,
|
|
Expr *op, QualType writtenTy)
|
|
: CastExpr(SC, exprTy, kind, op), TypeAsWritten(writtenTy) {}
|
|
|
|
/// \brief Construct an empty explicit cast.
|
|
ExplicitCastExpr(StmtClass SC, EmptyShell Shell)
|
|
: CastExpr(SC, Shell) { }
|
|
|
|
public:
|
|
/// getTypeAsWritten - Returns the type that this expression is
|
|
/// casting to, as written in the source code.
|
|
QualType getTypeAsWritten() const { return TypeAsWritten; }
|
|
void setTypeAsWritten(QualType T) { TypeAsWritten = T; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
StmtClass SC = T->getStmtClass();
|
|
if (SC >= ExplicitCastExprClass && SC <= CStyleCastExprClass)
|
|
return true;
|
|
if (SC >= CXXNamedCastExprClass && SC <= CXXFunctionalCastExprClass)
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
static bool classof(const ExplicitCastExpr *) { return true; }
|
|
};
|
|
|
|
/// CStyleCastExpr - An explicit cast in C (C99 6.5.4) or a C-style
|
|
/// cast in C++ (C++ [expr.cast]), which uses the syntax
|
|
/// (Type)expr. For example: @c (int)f.
|
|
class CStyleCastExpr : public ExplicitCastExpr {
|
|
SourceLocation LPLoc; // the location of the left paren
|
|
SourceLocation RPLoc; // the location of the right paren
|
|
public:
|
|
CStyleCastExpr(QualType exprTy, CastKind kind, Expr *op, QualType writtenTy,
|
|
SourceLocation l, SourceLocation r) :
|
|
ExplicitCastExpr(CStyleCastExprClass, exprTy, kind, op, writtenTy),
|
|
LPLoc(l), RPLoc(r) {}
|
|
|
|
/// \brief Construct an empty C-style explicit cast.
|
|
explicit CStyleCastExpr(EmptyShell Shell)
|
|
: ExplicitCastExpr(CStyleCastExprClass, Shell) { }
|
|
|
|
SourceLocation getLParenLoc() const { return LPLoc; }
|
|
void setLParenLoc(SourceLocation L) { LPLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RPLoc; }
|
|
void setRParenLoc(SourceLocation L) { RPLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(LPLoc, getSubExpr()->getSourceRange().getEnd());
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == CStyleCastExprClass;
|
|
}
|
|
static bool classof(const CStyleCastExpr *) { return true; }
|
|
};
|
|
|
|
/// \brief A builtin binary operation expression such as "x + y" or "x <= y".
|
|
///
|
|
/// This expression node kind describes a builtin binary operation,
|
|
/// such as "x + y" for integer values "x" and "y". The operands will
|
|
/// already have been converted to appropriate types (e.g., by
|
|
/// performing promotions or conversions).
|
|
///
|
|
/// In C++, where operators may be overloaded, a different kind of
|
|
/// expression node (CXXOperatorCallExpr) is used to express the
|
|
/// invocation of an overloaded operator with operator syntax. Within
|
|
/// a C++ template, whether BinaryOperator or CXXOperatorCallExpr is
|
|
/// used to store an expression "x + y" depends on the subexpressions
|
|
/// for x and y. If neither x or y is type-dependent, and the "+"
|
|
/// operator resolves to a built-in operation, BinaryOperator will be
|
|
/// used to express the computation (x and y may still be
|
|
/// value-dependent). If either x or y is type-dependent, or if the
|
|
/// "+" resolves to an overloaded operator, CXXOperatorCallExpr will
|
|
/// be used to express the computation.
|
|
class BinaryOperator : public Expr {
|
|
public:
|
|
enum Opcode {
|
|
// Operators listed in order of precedence.
|
|
// Note that additions to this should also update the StmtVisitor class.
|
|
PtrMemD, PtrMemI, // [C++ 5.5] Pointer-to-member operators.
|
|
Mul, Div, Rem, // [C99 6.5.5] Multiplicative operators.
|
|
Add, Sub, // [C99 6.5.6] Additive operators.
|
|
Shl, Shr, // [C99 6.5.7] Bitwise shift operators.
|
|
LT, GT, LE, GE, // [C99 6.5.8] Relational operators.
|
|
EQ, NE, // [C99 6.5.9] Equality operators.
|
|
And, // [C99 6.5.10] Bitwise AND operator.
|
|
Xor, // [C99 6.5.11] Bitwise XOR operator.
|
|
Or, // [C99 6.5.12] Bitwise OR operator.
|
|
LAnd, // [C99 6.5.13] Logical AND operator.
|
|
LOr, // [C99 6.5.14] Logical OR operator.
|
|
Assign, MulAssign,// [C99 6.5.16] Assignment operators.
|
|
DivAssign, RemAssign,
|
|
AddAssign, SubAssign,
|
|
ShlAssign, ShrAssign,
|
|
AndAssign, XorAssign,
|
|
OrAssign,
|
|
Comma // [C99 6.5.17] Comma operator.
|
|
};
|
|
private:
|
|
enum { LHS, RHS, END_EXPR };
|
|
Stmt* SubExprs[END_EXPR];
|
|
Opcode Opc;
|
|
SourceLocation OpLoc;
|
|
public:
|
|
|
|
BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy,
|
|
SourceLocation opLoc)
|
|
: Expr(BinaryOperatorClass, ResTy,
|
|
lhs->isTypeDependent() || rhs->isTypeDependent(),
|
|
lhs->isValueDependent() || rhs->isValueDependent()),
|
|
Opc(opc), OpLoc(opLoc) {
|
|
SubExprs[LHS] = lhs;
|
|
SubExprs[RHS] = rhs;
|
|
assert(!isCompoundAssignmentOp() &&
|
|
"Use ArithAssignBinaryOperator for compound assignments");
|
|
}
|
|
|
|
/// \brief Construct an empty binary operator.
|
|
explicit BinaryOperator(EmptyShell Empty)
|
|
: Expr(BinaryOperatorClass, Empty), Opc(Comma) { }
|
|
|
|
SourceLocation getOperatorLoc() const { return OpLoc; }
|
|
void setOperatorLoc(SourceLocation L) { OpLoc = L; }
|
|
|
|
Opcode getOpcode() const { return Opc; }
|
|
void setOpcode(Opcode O) { Opc = O; }
|
|
|
|
Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); }
|
|
void setLHS(Expr *E) { SubExprs[LHS] = E; }
|
|
Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); }
|
|
void setRHS(Expr *E) { SubExprs[RHS] = E; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getLHS()->getLocStart(), getRHS()->getLocEnd());
|
|
}
|
|
|
|
/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
|
|
/// corresponds to, e.g. "<<=".
|
|
static const char *getOpcodeStr(Opcode Op);
|
|
|
|
/// \brief Retrieve the binary opcode that corresponds to the given
|
|
/// overloaded operator.
|
|
static Opcode getOverloadedOpcode(OverloadedOperatorKind OO);
|
|
|
|
/// \brief Retrieve the overloaded operator kind that corresponds to
|
|
/// the given binary opcode.
|
|
static OverloadedOperatorKind getOverloadedOperator(Opcode Opc);
|
|
|
|
/// predicates to categorize the respective opcodes.
|
|
bool isMultiplicativeOp() const { return Opc >= Mul && Opc <= Rem; }
|
|
bool isAdditiveOp() const { return Opc == Add || Opc == Sub; }
|
|
static bool isShiftOp(Opcode Opc) { return Opc == Shl || Opc == Shr; }
|
|
bool isShiftOp() const { return isShiftOp(Opc); }
|
|
|
|
static bool isBitwiseOp(Opcode Opc) { return Opc >= And && Opc <= Or; }
|
|
bool isBitwiseOp() const { return isBitwiseOp(Opc); }
|
|
|
|
static bool isRelationalOp(Opcode Opc) { return Opc >= LT && Opc <= GE; }
|
|
bool isRelationalOp() const { return isRelationalOp(Opc); }
|
|
|
|
static bool isEqualityOp(Opcode Opc) { return Opc == EQ || Opc == NE; }
|
|
bool isEqualityOp() const { return isEqualityOp(Opc); }
|
|
|
|
static bool isComparisonOp(Opcode Opc) { return Opc >= LT && Opc <= NE; }
|
|
bool isComparisonOp() const { return isComparisonOp(Opc); }
|
|
|
|
static bool isLogicalOp(Opcode Opc) { return Opc == LAnd || Opc == LOr; }
|
|
bool isLogicalOp() const { return isLogicalOp(Opc); }
|
|
|
|
bool isAssignmentOp() const { return Opc >= Assign && Opc <= OrAssign; }
|
|
bool isCompoundAssignmentOp() const { return Opc > Assign && Opc <= OrAssign;}
|
|
bool isShiftAssignOp() const { return Opc == ShlAssign || Opc == ShrAssign; }
|
|
|
|
static bool classof(const Stmt *S) {
|
|
return S->getStmtClass() == BinaryOperatorClass ||
|
|
S->getStmtClass() == CompoundAssignOperatorClass;
|
|
}
|
|
static bool classof(const BinaryOperator *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
|
|
protected:
|
|
BinaryOperator(Expr *lhs, Expr *rhs, Opcode opc, QualType ResTy,
|
|
SourceLocation oploc, bool dead)
|
|
: Expr(CompoundAssignOperatorClass, ResTy), Opc(opc), OpLoc(oploc) {
|
|
SubExprs[LHS] = lhs;
|
|
SubExprs[RHS] = rhs;
|
|
}
|
|
|
|
BinaryOperator(StmtClass SC, EmptyShell Empty)
|
|
: Expr(SC, Empty), Opc(MulAssign) { }
|
|
};
|
|
|
|
/// CompoundAssignOperator - For compound assignments (e.g. +=), we keep
|
|
/// track of the type the operation is performed in. Due to the semantics of
|
|
/// these operators, the operands are promoted, the aritmetic performed, an
|
|
/// implicit conversion back to the result type done, then the assignment takes
|
|
/// place. This captures the intermediate type which the computation is done
|
|
/// in.
|
|
class CompoundAssignOperator : public BinaryOperator {
|
|
QualType ComputationLHSType;
|
|
QualType ComputationResultType;
|
|
public:
|
|
CompoundAssignOperator(Expr *lhs, Expr *rhs, Opcode opc,
|
|
QualType ResType, QualType CompLHSType,
|
|
QualType CompResultType,
|
|
SourceLocation OpLoc)
|
|
: BinaryOperator(lhs, rhs, opc, ResType, OpLoc, true),
|
|
ComputationLHSType(CompLHSType),
|
|
ComputationResultType(CompResultType) {
|
|
assert(isCompoundAssignmentOp() &&
|
|
"Only should be used for compound assignments");
|
|
}
|
|
|
|
/// \brief Build an empty compound assignment operator expression.
|
|
explicit CompoundAssignOperator(EmptyShell Empty)
|
|
: BinaryOperator(CompoundAssignOperatorClass, Empty) { }
|
|
|
|
// The two computation types are the type the LHS is converted
|
|
// to for the computation and the type of the result; the two are
|
|
// distinct in a few cases (specifically, int+=ptr and ptr-=ptr).
|
|
QualType getComputationLHSType() const { return ComputationLHSType; }
|
|
void setComputationLHSType(QualType T) { ComputationLHSType = T; }
|
|
|
|
QualType getComputationResultType() const { return ComputationResultType; }
|
|
void setComputationResultType(QualType T) { ComputationResultType = T; }
|
|
|
|
static bool classof(const CompoundAssignOperator *) { return true; }
|
|
static bool classof(const Stmt *S) {
|
|
return S->getStmtClass() == CompoundAssignOperatorClass;
|
|
}
|
|
};
|
|
|
|
/// ConditionalOperator - The ?: operator. Note that LHS may be null when the
|
|
/// GNU "missing LHS" extension is in use.
|
|
///
|
|
class ConditionalOperator : public Expr {
|
|
enum { COND, LHS, RHS, END_EXPR };
|
|
Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides.
|
|
SourceLocation QuestionLoc, ColonLoc;
|
|
public:
|
|
ConditionalOperator(Expr *cond, SourceLocation QLoc, Expr *lhs,
|
|
SourceLocation CLoc, Expr *rhs, QualType t)
|
|
: Expr(ConditionalOperatorClass, t,
|
|
// FIXME: the type of the conditional operator doesn't
|
|
// depend on the type of the conditional, but the standard
|
|
// seems to imply that it could. File a bug!
|
|
((lhs && lhs->isTypeDependent()) || (rhs && rhs->isTypeDependent())),
|
|
(cond->isValueDependent() ||
|
|
(lhs && lhs->isValueDependent()) ||
|
|
(rhs && rhs->isValueDependent()))),
|
|
QuestionLoc(QLoc),
|
|
ColonLoc(CLoc) {
|
|
SubExprs[COND] = cond;
|
|
SubExprs[LHS] = lhs;
|
|
SubExprs[RHS] = rhs;
|
|
}
|
|
|
|
/// \brief Build an empty conditional operator.
|
|
explicit ConditionalOperator(EmptyShell Empty)
|
|
: Expr(ConditionalOperatorClass, Empty) { }
|
|
|
|
// getCond - Return the expression representing the condition for
|
|
// the ?: operator.
|
|
Expr *getCond() const { return cast<Expr>(SubExprs[COND]); }
|
|
void setCond(Expr *E) { SubExprs[COND] = E; }
|
|
|
|
// getTrueExpr - Return the subexpression representing the value of the ?:
|
|
// expression if the condition evaluates to true. In most cases this value
|
|
// will be the same as getLHS() except a GCC extension allows the left
|
|
// subexpression to be omitted, and instead of the condition be returned.
|
|
// e.g: x ?: y is shorthand for x ? x : y, except that the expression "x"
|
|
// is only evaluated once.
|
|
Expr *getTrueExpr() const {
|
|
return cast<Expr>(SubExprs[LHS] ? SubExprs[LHS] : SubExprs[COND]);
|
|
}
|
|
|
|
// getTrueExpr - Return the subexpression representing the value of the ?:
|
|
// expression if the condition evaluates to false. This is the same as getRHS.
|
|
Expr *getFalseExpr() const { return cast<Expr>(SubExprs[RHS]); }
|
|
|
|
Expr *getLHS() const { return cast_or_null<Expr>(SubExprs[LHS]); }
|
|
void setLHS(Expr *E) { SubExprs[LHS] = E; }
|
|
|
|
Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); }
|
|
void setRHS(Expr *E) { SubExprs[RHS] = E; }
|
|
|
|
SourceLocation getQuestionLoc() const { return QuestionLoc; }
|
|
void setQuestionLoc(SourceLocation L) { QuestionLoc = L; }
|
|
|
|
SourceLocation getColonLoc() const { return ColonLoc; }
|
|
void setColonLoc(SourceLocation L) { ColonLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getCond()->getLocStart(), getRHS()->getLocEnd());
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ConditionalOperatorClass;
|
|
}
|
|
static bool classof(const ConditionalOperator *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// AddrLabelExpr - The GNU address of label extension, representing &&label.
|
|
class AddrLabelExpr : public Expr {
|
|
SourceLocation AmpAmpLoc, LabelLoc;
|
|
LabelStmt *Label;
|
|
public:
|
|
AddrLabelExpr(SourceLocation AALoc, SourceLocation LLoc, LabelStmt *L,
|
|
QualType t)
|
|
: Expr(AddrLabelExprClass, t), AmpAmpLoc(AALoc), LabelLoc(LLoc), Label(L) {}
|
|
|
|
/// \brief Build an empty address of a label expression.
|
|
explicit AddrLabelExpr(EmptyShell Empty)
|
|
: Expr(AddrLabelExprClass, Empty) { }
|
|
|
|
SourceLocation getAmpAmpLoc() const { return AmpAmpLoc; }
|
|
void setAmpAmpLoc(SourceLocation L) { AmpAmpLoc = L; }
|
|
SourceLocation getLabelLoc() const { return LabelLoc; }
|
|
void setLabelLoc(SourceLocation L) { LabelLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(AmpAmpLoc, LabelLoc);
|
|
}
|
|
|
|
LabelStmt *getLabel() const { return Label; }
|
|
void setLabel(LabelStmt *S) { Label = S; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == AddrLabelExprClass;
|
|
}
|
|
static bool classof(const AddrLabelExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// StmtExpr - This is the GNU Statement Expression extension: ({int X=4; X;}).
|
|
/// The StmtExpr contains a single CompoundStmt node, which it evaluates and
|
|
/// takes the value of the last subexpression.
|
|
class StmtExpr : public Expr {
|
|
Stmt *SubStmt;
|
|
SourceLocation LParenLoc, RParenLoc;
|
|
public:
|
|
StmtExpr(CompoundStmt *substmt, QualType T,
|
|
SourceLocation lp, SourceLocation rp) :
|
|
Expr(StmtExprClass, T), SubStmt(substmt), LParenLoc(lp), RParenLoc(rp) { }
|
|
|
|
/// \brief Build an empty statement expression.
|
|
explicit StmtExpr(EmptyShell Empty) : Expr(StmtExprClass, Empty) { }
|
|
|
|
CompoundStmt *getSubStmt() { return cast<CompoundStmt>(SubStmt); }
|
|
const CompoundStmt *getSubStmt() const { return cast<CompoundStmt>(SubStmt); }
|
|
void setSubStmt(CompoundStmt *S) { SubStmt = S; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(LParenLoc, RParenLoc);
|
|
}
|
|
|
|
SourceLocation getLParenLoc() const { return LParenLoc; }
|
|
void setLParenLoc(SourceLocation L) { LParenLoc = L; }
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == StmtExprClass;
|
|
}
|
|
static bool classof(const StmtExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// TypesCompatibleExpr - GNU builtin-in function __builtin_types_compatible_p.
|
|
/// This AST node represents a function that returns 1 if two *types* (not
|
|
/// expressions) are compatible. The result of this built-in function can be
|
|
/// used in integer constant expressions.
|
|
class TypesCompatibleExpr : public Expr {
|
|
QualType Type1;
|
|
QualType Type2;
|
|
SourceLocation BuiltinLoc, RParenLoc;
|
|
public:
|
|
TypesCompatibleExpr(QualType ReturnType, SourceLocation BLoc,
|
|
QualType t1, QualType t2, SourceLocation RP) :
|
|
Expr(TypesCompatibleExprClass, ReturnType), Type1(t1), Type2(t2),
|
|
BuiltinLoc(BLoc), RParenLoc(RP) {}
|
|
|
|
/// \brief Build an empty __builtin_type_compatible_p expression.
|
|
explicit TypesCompatibleExpr(EmptyShell Empty)
|
|
: Expr(TypesCompatibleExprClass, Empty) { }
|
|
|
|
QualType getArgType1() const { return Type1; }
|
|
void setArgType1(QualType T) { Type1 = T; }
|
|
QualType getArgType2() const { return Type2; }
|
|
void setArgType2(QualType T) { Type2 = T; }
|
|
|
|
SourceLocation getBuiltinLoc() const { return BuiltinLoc; }
|
|
void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(BuiltinLoc, RParenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == TypesCompatibleExprClass;
|
|
}
|
|
static bool classof(const TypesCompatibleExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// ShuffleVectorExpr - clang-specific builtin-in function
|
|
/// __builtin_shufflevector.
|
|
/// This AST node represents a operator that does a constant
|
|
/// shuffle, similar to LLVM's shufflevector instruction. It takes
|
|
/// two vectors and a variable number of constant indices,
|
|
/// and returns the appropriately shuffled vector.
|
|
class ShuffleVectorExpr : public Expr {
|
|
SourceLocation BuiltinLoc, RParenLoc;
|
|
|
|
// SubExprs - the list of values passed to the __builtin_shufflevector
|
|
// function. The first two are vectors, and the rest are constant
|
|
// indices. The number of values in this list is always
|
|
// 2+the number of indices in the vector type.
|
|
Stmt **SubExprs;
|
|
unsigned NumExprs;
|
|
|
|
protected:
|
|
virtual void DoDestroy(ASTContext &C);
|
|
|
|
public:
|
|
ShuffleVectorExpr(ASTContext &C, Expr **args, unsigned nexpr,
|
|
QualType Type, SourceLocation BLoc,
|
|
SourceLocation RP) :
|
|
Expr(ShuffleVectorExprClass, Type), BuiltinLoc(BLoc),
|
|
RParenLoc(RP), NumExprs(nexpr) {
|
|
|
|
SubExprs = new (C) Stmt*[nexpr];
|
|
for (unsigned i = 0; i < nexpr; i++)
|
|
SubExprs[i] = args[i];
|
|
}
|
|
|
|
/// \brief Build an empty vector-shuffle expression.
|
|
explicit ShuffleVectorExpr(EmptyShell Empty)
|
|
: Expr(ShuffleVectorExprClass, Empty), SubExprs(0) { }
|
|
|
|
SourceLocation getBuiltinLoc() const { return BuiltinLoc; }
|
|
void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(BuiltinLoc, RParenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ShuffleVectorExprClass;
|
|
}
|
|
static bool classof(const ShuffleVectorExpr *) { return true; }
|
|
|
|
~ShuffleVectorExpr() {}
|
|
|
|
/// getNumSubExprs - Return the size of the SubExprs array. This includes the
|
|
/// constant expression, the actual arguments passed in, and the function
|
|
/// pointers.
|
|
unsigned getNumSubExprs() const { return NumExprs; }
|
|
|
|
/// getExpr - Return the Expr at the specified index.
|
|
Expr *getExpr(unsigned Index) {
|
|
assert((Index < NumExprs) && "Arg access out of range!");
|
|
return cast<Expr>(SubExprs[Index]);
|
|
}
|
|
const Expr *getExpr(unsigned Index) const {
|
|
assert((Index < NumExprs) && "Arg access out of range!");
|
|
return cast<Expr>(SubExprs[Index]);
|
|
}
|
|
|
|
void setExprs(ASTContext &C, Expr ** Exprs, unsigned NumExprs);
|
|
|
|
unsigned getShuffleMaskIdx(ASTContext &Ctx, unsigned N) {
|
|
assert((N < NumExprs - 2) && "Shuffle idx out of range!");
|
|
return getExpr(N+2)->EvaluateAsInt(Ctx).getZExtValue();
|
|
}
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// ChooseExpr - GNU builtin-in function __builtin_choose_expr.
|
|
/// This AST node is similar to the conditional operator (?:) in C, with
|
|
/// the following exceptions:
|
|
/// - the test expression must be a integer constant expression.
|
|
/// - the expression returned acts like the chosen subexpression in every
|
|
/// visible way: the type is the same as that of the chosen subexpression,
|
|
/// and all predicates (whether it's an l-value, whether it's an integer
|
|
/// constant expression, etc.) return the same result as for the chosen
|
|
/// sub-expression.
|
|
class ChooseExpr : public Expr {
|
|
enum { COND, LHS, RHS, END_EXPR };
|
|
Stmt* SubExprs[END_EXPR]; // Left/Middle/Right hand sides.
|
|
SourceLocation BuiltinLoc, RParenLoc;
|
|
public:
|
|
ChooseExpr(SourceLocation BLoc, Expr *cond, Expr *lhs, Expr *rhs, QualType t,
|
|
SourceLocation RP, bool TypeDependent, bool ValueDependent)
|
|
: Expr(ChooseExprClass, t, TypeDependent, ValueDependent),
|
|
BuiltinLoc(BLoc), RParenLoc(RP) {
|
|
SubExprs[COND] = cond;
|
|
SubExprs[LHS] = lhs;
|
|
SubExprs[RHS] = rhs;
|
|
}
|
|
|
|
/// \brief Build an empty __builtin_choose_expr.
|
|
explicit ChooseExpr(EmptyShell Empty) : Expr(ChooseExprClass, Empty) { }
|
|
|
|
/// isConditionTrue - Return whether the condition is true (i.e. not
|
|
/// equal to zero).
|
|
bool isConditionTrue(ASTContext &C) const;
|
|
|
|
/// getChosenSubExpr - Return the subexpression chosen according to the
|
|
/// condition.
|
|
Expr *getChosenSubExpr(ASTContext &C) const {
|
|
return isConditionTrue(C) ? getLHS() : getRHS();
|
|
}
|
|
|
|
Expr *getCond() const { return cast<Expr>(SubExprs[COND]); }
|
|
void setCond(Expr *E) { SubExprs[COND] = E; }
|
|
Expr *getLHS() const { return cast<Expr>(SubExprs[LHS]); }
|
|
void setLHS(Expr *E) { SubExprs[LHS] = E; }
|
|
Expr *getRHS() const { return cast<Expr>(SubExprs[RHS]); }
|
|
void setRHS(Expr *E) { SubExprs[RHS] = E; }
|
|
|
|
SourceLocation getBuiltinLoc() const { return BuiltinLoc; }
|
|
void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(BuiltinLoc, RParenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ChooseExprClass;
|
|
}
|
|
static bool classof(const ChooseExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// GNUNullExpr - Implements the GNU __null extension, which is a name
|
|
/// for a null pointer constant that has integral type (e.g., int or
|
|
/// long) and is the same size and alignment as a pointer. The __null
|
|
/// extension is typically only used by system headers, which define
|
|
/// NULL as __null in C++ rather than using 0 (which is an integer
|
|
/// that may not match the size of a pointer).
|
|
class GNUNullExpr : public Expr {
|
|
/// TokenLoc - The location of the __null keyword.
|
|
SourceLocation TokenLoc;
|
|
|
|
public:
|
|
GNUNullExpr(QualType Ty, SourceLocation Loc)
|
|
: Expr(GNUNullExprClass, Ty), TokenLoc(Loc) { }
|
|
|
|
/// \brief Build an empty GNU __null expression.
|
|
explicit GNUNullExpr(EmptyShell Empty) : Expr(GNUNullExprClass, Empty) { }
|
|
|
|
/// getTokenLocation - The location of the __null token.
|
|
SourceLocation getTokenLocation() const { return TokenLoc; }
|
|
void setTokenLocation(SourceLocation L) { TokenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(TokenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == GNUNullExprClass;
|
|
}
|
|
static bool classof(const GNUNullExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// VAArgExpr, used for the builtin function __builtin_va_start.
|
|
class VAArgExpr : public Expr {
|
|
Stmt *Val;
|
|
SourceLocation BuiltinLoc, RParenLoc;
|
|
public:
|
|
VAArgExpr(SourceLocation BLoc, Expr* e, QualType t, SourceLocation RPLoc)
|
|
: Expr(VAArgExprClass, t),
|
|
Val(e),
|
|
BuiltinLoc(BLoc),
|
|
RParenLoc(RPLoc) { }
|
|
|
|
/// \brief Create an empty __builtin_va_start expression.
|
|
explicit VAArgExpr(EmptyShell Empty) : Expr(VAArgExprClass, Empty) { }
|
|
|
|
const Expr *getSubExpr() const { return cast<Expr>(Val); }
|
|
Expr *getSubExpr() { return cast<Expr>(Val); }
|
|
void setSubExpr(Expr *E) { Val = E; }
|
|
|
|
SourceLocation getBuiltinLoc() const { return BuiltinLoc; }
|
|
void setBuiltinLoc(SourceLocation L) { BuiltinLoc = L; }
|
|
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
void setRParenLoc(SourceLocation L) { RParenLoc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(BuiltinLoc, RParenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == VAArgExprClass;
|
|
}
|
|
static bool classof(const VAArgExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// @brief Describes an C or C++ initializer list.
|
|
///
|
|
/// InitListExpr describes an initializer list, which can be used to
|
|
/// initialize objects of different types, including
|
|
/// struct/class/union types, arrays, and vectors. For example:
|
|
///
|
|
/// @code
|
|
/// struct foo x = { 1, { 2, 3 } };
|
|
/// @endcode
|
|
///
|
|
/// Prior to semantic analysis, an initializer list will represent the
|
|
/// initializer list as written by the user, but will have the
|
|
/// placeholder type "void". This initializer list is called the
|
|
/// syntactic form of the initializer, and may contain C99 designated
|
|
/// initializers (represented as DesignatedInitExprs), initializations
|
|
/// of subobject members without explicit braces, and so on. Clients
|
|
/// interested in the original syntax of the initializer list should
|
|
/// use the syntactic form of the initializer list.
|
|
///
|
|
/// After semantic analysis, the initializer list will represent the
|
|
/// semantic form of the initializer, where the initializations of all
|
|
/// subobjects are made explicit with nested InitListExpr nodes and
|
|
/// C99 designators have been eliminated by placing the designated
|
|
/// initializations into the subobject they initialize. Additionally,
|
|
/// any "holes" in the initialization, where no initializer has been
|
|
/// specified for a particular subobject, will be replaced with
|
|
/// implicitly-generated ImplicitValueInitExpr expressions that
|
|
/// value-initialize the subobjects. Note, however, that the
|
|
/// initializer lists may still have fewer initializers than there are
|
|
/// elements to initialize within the object.
|
|
///
|
|
/// Given the semantic form of the initializer list, one can retrieve
|
|
/// the original syntactic form of that initializer list (if it
|
|
/// exists) using getSyntacticForm(). Since many initializer lists
|
|
/// have the same syntactic and semantic forms, getSyntacticForm() may
|
|
/// return NULL, indicating that the current initializer list also
|
|
/// serves as its syntactic form.
|
|
class InitListExpr : public Expr {
|
|
// FIXME: Eliminate this vector in favor of ASTContext allocation
|
|
std::vector<Stmt *> InitExprs;
|
|
SourceLocation LBraceLoc, RBraceLoc;
|
|
|
|
/// Contains the initializer list that describes the syntactic form
|
|
/// written in the source code.
|
|
InitListExpr *SyntacticForm;
|
|
|
|
/// If this initializer list initializes a union, specifies which
|
|
/// field within the union will be initialized.
|
|
FieldDecl *UnionFieldInit;
|
|
|
|
/// Whether this initializer list originally had a GNU array-range
|
|
/// designator in it. This is a temporary marker used by CodeGen.
|
|
bool HadArrayRangeDesignator;
|
|
|
|
public:
|
|
InitListExpr(SourceLocation lbraceloc, Expr **initexprs, unsigned numinits,
|
|
SourceLocation rbraceloc);
|
|
|
|
/// \brief Build an empty initializer list.
|
|
explicit InitListExpr(EmptyShell Empty) : Expr(InitListExprClass, Empty) { }
|
|
|
|
unsigned getNumInits() const { return InitExprs.size(); }
|
|
|
|
const Expr* getInit(unsigned Init) const {
|
|
assert(Init < getNumInits() && "Initializer access out of range!");
|
|
return cast_or_null<Expr>(InitExprs[Init]);
|
|
}
|
|
|
|
Expr* getInit(unsigned Init) {
|
|
assert(Init < getNumInits() && "Initializer access out of range!");
|
|
return cast_or_null<Expr>(InitExprs[Init]);
|
|
}
|
|
|
|
void setInit(unsigned Init, Expr *expr) {
|
|
assert(Init < getNumInits() && "Initializer access out of range!");
|
|
InitExprs[Init] = expr;
|
|
}
|
|
|
|
/// \brief Reserve space for some number of initializers.
|
|
void reserveInits(unsigned NumInits);
|
|
|
|
/// @brief Specify the number of initializers
|
|
///
|
|
/// If there are more than @p NumInits initializers, the remaining
|
|
/// initializers will be destroyed. If there are fewer than @p
|
|
/// NumInits initializers, NULL expressions will be added for the
|
|
/// unknown initializers.
|
|
void resizeInits(ASTContext &Context, unsigned NumInits);
|
|
|
|
/// @brief Updates the initializer at index @p Init with the new
|
|
/// expression @p expr, and returns the old expression at that
|
|
/// location.
|
|
///
|
|
/// When @p Init is out of range for this initializer list, the
|
|
/// initializer list will be extended with NULL expressions to
|
|
/// accomodate the new entry.
|
|
Expr *updateInit(unsigned Init, Expr *expr);
|
|
|
|
/// \brief If this initializes a union, specifies which field in the
|
|
/// union to initialize.
|
|
///
|
|
/// Typically, this field is the first named field within the
|
|
/// union. However, a designated initializer can specify the
|
|
/// initialization of a different field within the union.
|
|
FieldDecl *getInitializedFieldInUnion() { return UnionFieldInit; }
|
|
void setInitializedFieldInUnion(FieldDecl *FD) { UnionFieldInit = FD; }
|
|
|
|
// Explicit InitListExpr's originate from source code (and have valid source
|
|
// locations). Implicit InitListExpr's are created by the semantic analyzer.
|
|
bool isExplicit() {
|
|
return LBraceLoc.isValid() && RBraceLoc.isValid();
|
|
}
|
|
|
|
SourceLocation getLBraceLoc() const { return LBraceLoc; }
|
|
void setLBraceLoc(SourceLocation Loc) { LBraceLoc = Loc; }
|
|
SourceLocation getRBraceLoc() const { return RBraceLoc; }
|
|
void setRBraceLoc(SourceLocation Loc) { RBraceLoc = Loc; }
|
|
|
|
/// @brief Retrieve the initializer list that describes the
|
|
/// syntactic form of the initializer.
|
|
///
|
|
///
|
|
InitListExpr *getSyntacticForm() const { return SyntacticForm; }
|
|
void setSyntacticForm(InitListExpr *Init) { SyntacticForm = Init; }
|
|
|
|
bool hadArrayRangeDesignator() const { return HadArrayRangeDesignator; }
|
|
void sawArrayRangeDesignator(bool ARD = true) {
|
|
HadArrayRangeDesignator = ARD;
|
|
}
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(LBraceLoc, RBraceLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == InitListExprClass;
|
|
}
|
|
static bool classof(const InitListExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
|
|
typedef std::vector<Stmt *>::iterator iterator;
|
|
typedef std::vector<Stmt *>::reverse_iterator reverse_iterator;
|
|
|
|
iterator begin() { return InitExprs.begin(); }
|
|
iterator end() { return InitExprs.end(); }
|
|
reverse_iterator rbegin() { return InitExprs.rbegin(); }
|
|
reverse_iterator rend() { return InitExprs.rend(); }
|
|
};
|
|
|
|
/// @brief Represents a C99 designated initializer expression.
|
|
///
|
|
/// A designated initializer expression (C99 6.7.8) contains one or
|
|
/// more designators (which can be field designators, array
|
|
/// designators, or GNU array-range designators) followed by an
|
|
/// expression that initializes the field or element(s) that the
|
|
/// designators refer to. For example, given:
|
|
///
|
|
/// @code
|
|
/// struct point {
|
|
/// double x;
|
|
/// double y;
|
|
/// };
|
|
/// struct point ptarray[10] = { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 };
|
|
/// @endcode
|
|
///
|
|
/// The InitListExpr contains three DesignatedInitExprs, the first of
|
|
/// which covers @c [2].y=1.0. This DesignatedInitExpr will have two
|
|
/// designators, one array designator for @c [2] followed by one field
|
|
/// designator for @c .y. The initalization expression will be 1.0.
|
|
class DesignatedInitExpr : public Expr {
|
|
public:
|
|
/// \brief Forward declaration of the Designator class.
|
|
class Designator;
|
|
|
|
private:
|
|
/// The location of the '=' or ':' prior to the actual initializer
|
|
/// expression.
|
|
SourceLocation EqualOrColonLoc;
|
|
|
|
/// Whether this designated initializer used the GNU deprecated
|
|
/// syntax rather than the C99 '=' syntax.
|
|
bool GNUSyntax : 1;
|
|
|
|
/// The number of designators in this initializer expression.
|
|
unsigned NumDesignators : 15;
|
|
|
|
/// \brief The designators in this designated initialization
|
|
/// expression.
|
|
Designator *Designators;
|
|
|
|
/// The number of subexpressions of this initializer expression,
|
|
/// which contains both the initializer and any additional
|
|
/// expressions used by array and array-range designators.
|
|
unsigned NumSubExprs : 16;
|
|
|
|
|
|
DesignatedInitExpr(QualType Ty, unsigned NumDesignators,
|
|
const Designator *Designators,
|
|
SourceLocation EqualOrColonLoc, bool GNUSyntax,
|
|
Expr **IndexExprs, unsigned NumIndexExprs,
|
|
Expr *Init);
|
|
|
|
explicit DesignatedInitExpr(unsigned NumSubExprs)
|
|
: Expr(DesignatedInitExprClass, EmptyShell()),
|
|
NumDesignators(0), Designators(0), NumSubExprs(NumSubExprs) { }
|
|
|
|
protected:
|
|
virtual void DoDestroy(ASTContext &C);
|
|
|
|
public:
|
|
/// A field designator, e.g., ".x".
|
|
struct FieldDesignator {
|
|
/// Refers to the field that is being initialized. The low bit
|
|
/// of this field determines whether this is actually a pointer
|
|
/// to an IdentifierInfo (if 1) or a FieldDecl (if 0). When
|
|
/// initially constructed, a field designator will store an
|
|
/// IdentifierInfo*. After semantic analysis has resolved that
|
|
/// name, the field designator will instead store a FieldDecl*.
|
|
uintptr_t NameOrField;
|
|
|
|
/// The location of the '.' in the designated initializer.
|
|
unsigned DotLoc;
|
|
|
|
/// The location of the field name in the designated initializer.
|
|
unsigned FieldLoc;
|
|
};
|
|
|
|
/// An array or GNU array-range designator, e.g., "[9]" or "[10..15]".
|
|
struct ArrayOrRangeDesignator {
|
|
/// Location of the first index expression within the designated
|
|
/// initializer expression's list of subexpressions.
|
|
unsigned Index;
|
|
/// The location of the '[' starting the array range designator.
|
|
unsigned LBracketLoc;
|
|
/// The location of the ellipsis separating the start and end
|
|
/// indices. Only valid for GNU array-range designators.
|
|
unsigned EllipsisLoc;
|
|
/// The location of the ']' terminating the array range designator.
|
|
unsigned RBracketLoc;
|
|
};
|
|
|
|
/// @brief Represents a single C99 designator.
|
|
///
|
|
/// @todo This class is infuriatingly similar to clang::Designator,
|
|
/// but minor differences (storing indices vs. storing pointers)
|
|
/// keep us from reusing it. Try harder, later, to rectify these
|
|
/// differences.
|
|
class Designator {
|
|
/// @brief The kind of designator this describes.
|
|
enum {
|
|
FieldDesignator,
|
|
ArrayDesignator,
|
|
ArrayRangeDesignator
|
|
} Kind;
|
|
|
|
union {
|
|
/// A field designator, e.g., ".x".
|
|
struct FieldDesignator Field;
|
|
/// An array or GNU array-range designator, e.g., "[9]" or "[10..15]".
|
|
struct ArrayOrRangeDesignator ArrayOrRange;
|
|
};
|
|
friend class DesignatedInitExpr;
|
|
|
|
public:
|
|
Designator() {}
|
|
|
|
/// @brief Initializes a field designator.
|
|
Designator(const IdentifierInfo *FieldName, SourceLocation DotLoc,
|
|
SourceLocation FieldLoc)
|
|
: Kind(FieldDesignator) {
|
|
Field.NameOrField = reinterpret_cast<uintptr_t>(FieldName) | 0x01;
|
|
Field.DotLoc = DotLoc.getRawEncoding();
|
|
Field.FieldLoc = FieldLoc.getRawEncoding();
|
|
}
|
|
|
|
/// @brief Initializes an array designator.
|
|
Designator(unsigned Index, SourceLocation LBracketLoc,
|
|
SourceLocation RBracketLoc)
|
|
: Kind(ArrayDesignator) {
|
|
ArrayOrRange.Index = Index;
|
|
ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding();
|
|
ArrayOrRange.EllipsisLoc = SourceLocation().getRawEncoding();
|
|
ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding();
|
|
}
|
|
|
|
/// @brief Initializes a GNU array-range designator.
|
|
Designator(unsigned Index, SourceLocation LBracketLoc,
|
|
SourceLocation EllipsisLoc, SourceLocation RBracketLoc)
|
|
: Kind(ArrayRangeDesignator) {
|
|
ArrayOrRange.Index = Index;
|
|
ArrayOrRange.LBracketLoc = LBracketLoc.getRawEncoding();
|
|
ArrayOrRange.EllipsisLoc = EllipsisLoc.getRawEncoding();
|
|
ArrayOrRange.RBracketLoc = RBracketLoc.getRawEncoding();
|
|
}
|
|
|
|
bool isFieldDesignator() const { return Kind == FieldDesignator; }
|
|
bool isArrayDesignator() const { return Kind == ArrayDesignator; }
|
|
bool isArrayRangeDesignator() const { return Kind == ArrayRangeDesignator; }
|
|
|
|
IdentifierInfo * getFieldName();
|
|
|
|
FieldDecl *getField() {
|
|
assert(Kind == FieldDesignator && "Only valid on a field designator");
|
|
if (Field.NameOrField & 0x01)
|
|
return 0;
|
|
else
|
|
return reinterpret_cast<FieldDecl *>(Field.NameOrField);
|
|
}
|
|
|
|
void setField(FieldDecl *FD) {
|
|
assert(Kind == FieldDesignator && "Only valid on a field designator");
|
|
Field.NameOrField = reinterpret_cast<uintptr_t>(FD);
|
|
}
|
|
|
|
SourceLocation getDotLoc() const {
|
|
assert(Kind == FieldDesignator && "Only valid on a field designator");
|
|
return SourceLocation::getFromRawEncoding(Field.DotLoc);
|
|
}
|
|
|
|
SourceLocation getFieldLoc() const {
|
|
assert(Kind == FieldDesignator && "Only valid on a field designator");
|
|
return SourceLocation::getFromRawEncoding(Field.FieldLoc);
|
|
}
|
|
|
|
SourceLocation getLBracketLoc() const {
|
|
assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) &&
|
|
"Only valid on an array or array-range designator");
|
|
return SourceLocation::getFromRawEncoding(ArrayOrRange.LBracketLoc);
|
|
}
|
|
|
|
SourceLocation getRBracketLoc() const {
|
|
assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) &&
|
|
"Only valid on an array or array-range designator");
|
|
return SourceLocation::getFromRawEncoding(ArrayOrRange.RBracketLoc);
|
|
}
|
|
|
|
SourceLocation getEllipsisLoc() const {
|
|
assert(Kind == ArrayRangeDesignator &&
|
|
"Only valid on an array-range designator");
|
|
return SourceLocation::getFromRawEncoding(ArrayOrRange.EllipsisLoc);
|
|
}
|
|
|
|
unsigned getFirstExprIndex() const {
|
|
assert((Kind == ArrayDesignator || Kind == ArrayRangeDesignator) &&
|
|
"Only valid on an array or array-range designator");
|
|
return ArrayOrRange.Index;
|
|
}
|
|
|
|
SourceLocation getStartLocation() const {
|
|
if (Kind == FieldDesignator)
|
|
return getDotLoc().isInvalid()? getFieldLoc() : getDotLoc();
|
|
else
|
|
return getLBracketLoc();
|
|
}
|
|
};
|
|
|
|
static DesignatedInitExpr *Create(ASTContext &C, Designator *Designators,
|
|
unsigned NumDesignators,
|
|
Expr **IndexExprs, unsigned NumIndexExprs,
|
|
SourceLocation EqualOrColonLoc,
|
|
bool GNUSyntax, Expr *Init);
|
|
|
|
static DesignatedInitExpr *CreateEmpty(ASTContext &C, unsigned NumIndexExprs);
|
|
|
|
/// @brief Returns the number of designators in this initializer.
|
|
unsigned size() const { return NumDesignators; }
|
|
|
|
// Iterator access to the designators.
|
|
typedef Designator* designators_iterator;
|
|
designators_iterator designators_begin() { return Designators; }
|
|
designators_iterator designators_end() {
|
|
return Designators + NumDesignators;
|
|
}
|
|
|
|
Designator *getDesignator(unsigned Idx) { return &designators_begin()[Idx]; }
|
|
|
|
void setDesignators(const Designator *Desigs, unsigned NumDesigs);
|
|
|
|
Expr *getArrayIndex(const Designator& D);
|
|
Expr *getArrayRangeStart(const Designator& D);
|
|
Expr *getArrayRangeEnd(const Designator& D);
|
|
|
|
/// @brief Retrieve the location of the '=' that precedes the
|
|
/// initializer value itself, if present.
|
|
SourceLocation getEqualOrColonLoc() const { return EqualOrColonLoc; }
|
|
void setEqualOrColonLoc(SourceLocation L) { EqualOrColonLoc = L; }
|
|
|
|
/// @brief Determines whether this designated initializer used the
|
|
/// deprecated GNU syntax for designated initializers.
|
|
bool usesGNUSyntax() const { return GNUSyntax; }
|
|
void setGNUSyntax(bool GNU) { GNUSyntax = GNU; }
|
|
|
|
/// @brief Retrieve the initializer value.
|
|
Expr *getInit() const {
|
|
return cast<Expr>(*const_cast<DesignatedInitExpr*>(this)->child_begin());
|
|
}
|
|
|
|
void setInit(Expr *init) {
|
|
*child_begin() = init;
|
|
}
|
|
|
|
/// \brief Retrieve the total number of subexpressions in this
|
|
/// designated initializer expression, including the actual
|
|
/// initialized value and any expressions that occur within array
|
|
/// and array-range designators.
|
|
unsigned getNumSubExprs() const { return NumSubExprs; }
|
|
|
|
Expr *getSubExpr(unsigned Idx) {
|
|
assert(Idx < NumSubExprs && "Subscript out of range");
|
|
char* Ptr = static_cast<char*>(static_cast<void *>(this));
|
|
Ptr += sizeof(DesignatedInitExpr);
|
|
return reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx];
|
|
}
|
|
|
|
void setSubExpr(unsigned Idx, Expr *E) {
|
|
assert(Idx < NumSubExprs && "Subscript out of range");
|
|
char* Ptr = static_cast<char*>(static_cast<void *>(this));
|
|
Ptr += sizeof(DesignatedInitExpr);
|
|
reinterpret_cast<Expr**>(reinterpret_cast<void**>(Ptr))[Idx] = E;
|
|
}
|
|
|
|
/// \brief Replaces the designator at index @p Idx with the series
|
|
/// of designators in [First, Last).
|
|
void ExpandDesignator(unsigned Idx, const Designator *First,
|
|
const Designator *Last);
|
|
|
|
virtual SourceRange getSourceRange() const;
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == DesignatedInitExprClass;
|
|
}
|
|
static bool classof(const DesignatedInitExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// \brief Represents an implicitly-generated value initialization of
|
|
/// an object of a given type.
|
|
///
|
|
/// Implicit value initializations occur within semantic initializer
|
|
/// list expressions (InitListExpr) as placeholders for subobject
|
|
/// initializations not explicitly specified by the user.
|
|
///
|
|
/// \see InitListExpr
|
|
class ImplicitValueInitExpr : public Expr {
|
|
public:
|
|
explicit ImplicitValueInitExpr(QualType ty)
|
|
: Expr(ImplicitValueInitExprClass, ty) { }
|
|
|
|
/// \brief Construct an empty implicit value initialization.
|
|
explicit ImplicitValueInitExpr(EmptyShell Empty)
|
|
: Expr(ImplicitValueInitExprClass, Empty) { }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ImplicitValueInitExprClass;
|
|
}
|
|
static bool classof(const ImplicitValueInitExpr *) { return true; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange();
|
|
}
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
|
|
class ParenListExpr : public Expr {
|
|
Stmt **Exprs;
|
|
unsigned NumExprs;
|
|
SourceLocation LParenLoc, RParenLoc;
|
|
|
|
protected:
|
|
virtual void DoDestroy(ASTContext& C);
|
|
|
|
public:
|
|
ParenListExpr(ASTContext& C, SourceLocation lparenloc, Expr **exprs,
|
|
unsigned numexprs, SourceLocation rparenloc);
|
|
|
|
~ParenListExpr() {}
|
|
|
|
/// \brief Build an empty paren list.
|
|
//explicit ParenListExpr(EmptyShell Empty) : Expr(ParenListExprClass, Empty) { }
|
|
|
|
unsigned getNumExprs() const { return NumExprs; }
|
|
|
|
const Expr* getExpr(unsigned Init) const {
|
|
assert(Init < getNumExprs() && "Initializer access out of range!");
|
|
return cast_or_null<Expr>(Exprs[Init]);
|
|
}
|
|
|
|
Expr* getExpr(unsigned Init) {
|
|
assert(Init < getNumExprs() && "Initializer access out of range!");
|
|
return cast_or_null<Expr>(Exprs[Init]);
|
|
}
|
|
|
|
Expr **getExprs() { return reinterpret_cast<Expr **>(Exprs); }
|
|
|
|
SourceLocation getLParenLoc() const { return LParenLoc; }
|
|
SourceLocation getRParenLoc() const { return RParenLoc; }
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(LParenLoc, RParenLoc);
|
|
}
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ParenListExprClass;
|
|
}
|
|
static bool classof(const ParenListExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Clang Extensions
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
|
|
/// ExtVectorElementExpr - This represents access to specific elements of a
|
|
/// vector, and may occur on the left hand side or right hand side. For example
|
|
/// the following is legal: "V.xy = V.zw" if V is a 4 element extended vector.
|
|
///
|
|
/// Note that the base may have either vector or pointer to vector type, just
|
|
/// like a struct field reference.
|
|
///
|
|
class ExtVectorElementExpr : public Expr {
|
|
Stmt *Base;
|
|
IdentifierInfo *Accessor;
|
|
SourceLocation AccessorLoc;
|
|
public:
|
|
ExtVectorElementExpr(QualType ty, Expr *base, IdentifierInfo &accessor,
|
|
SourceLocation loc)
|
|
: Expr(ExtVectorElementExprClass, ty),
|
|
Base(base), Accessor(&accessor), AccessorLoc(loc) {}
|
|
|
|
/// \brief Build an empty vector element expression.
|
|
explicit ExtVectorElementExpr(EmptyShell Empty)
|
|
: Expr(ExtVectorElementExprClass, Empty) { }
|
|
|
|
const Expr *getBase() const { return cast<Expr>(Base); }
|
|
Expr *getBase() { return cast<Expr>(Base); }
|
|
void setBase(Expr *E) { Base = E; }
|
|
|
|
IdentifierInfo &getAccessor() const { return *Accessor; }
|
|
void setAccessor(IdentifierInfo *II) { Accessor = II; }
|
|
|
|
SourceLocation getAccessorLoc() const { return AccessorLoc; }
|
|
void setAccessorLoc(SourceLocation L) { AccessorLoc = L; }
|
|
|
|
/// getNumElements - Get the number of components being selected.
|
|
unsigned getNumElements() const;
|
|
|
|
/// containsDuplicateElements - Return true if any element access is
|
|
/// repeated.
|
|
bool containsDuplicateElements() const;
|
|
|
|
/// getEncodedElementAccess - Encode the elements accessed into an llvm
|
|
/// aggregate Constant of ConstantInt(s).
|
|
void getEncodedElementAccess(llvm::SmallVectorImpl<unsigned> &Elts) const;
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getBase()->getLocStart(), AccessorLoc);
|
|
}
|
|
|
|
/// isArrow - Return true if the base expression is a pointer to vector,
|
|
/// return false if the base expression is a vector.
|
|
bool isArrow() const;
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == ExtVectorElementExprClass;
|
|
}
|
|
static bool classof(const ExtVectorElementExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
|
|
/// BlockExpr - Adaptor class for mixing a BlockDecl with expressions.
|
|
/// ^{ statement-body } or ^(int arg1, float arg2){ statement-body }
|
|
class BlockExpr : public Expr {
|
|
protected:
|
|
BlockDecl *TheBlock;
|
|
bool HasBlockDeclRefExprs;
|
|
public:
|
|
BlockExpr(BlockDecl *BD, QualType ty, bool hasBlockDeclRefExprs)
|
|
: Expr(BlockExprClass, ty),
|
|
TheBlock(BD), HasBlockDeclRefExprs(hasBlockDeclRefExprs) {}
|
|
|
|
/// \brief Build an empty block expression.
|
|
explicit BlockExpr(EmptyShell Empty) : Expr(BlockExprClass, Empty) { }
|
|
|
|
const BlockDecl *getBlockDecl() const { return TheBlock; }
|
|
BlockDecl *getBlockDecl() { return TheBlock; }
|
|
void setBlockDecl(BlockDecl *BD) { TheBlock = BD; }
|
|
|
|
// Convenience functions for probing the underlying BlockDecl.
|
|
SourceLocation getCaretLocation() const;
|
|
const Stmt *getBody() const;
|
|
Stmt *getBody();
|
|
|
|
virtual SourceRange getSourceRange() const {
|
|
return SourceRange(getCaretLocation(), getBody()->getLocEnd());
|
|
}
|
|
|
|
/// getFunctionType - Return the underlying function type for this block.
|
|
const FunctionType *getFunctionType() const;
|
|
|
|
/// hasBlockDeclRefExprs - Return true iff the block has BlockDeclRefExpr
|
|
/// inside of the block that reference values outside the block.
|
|
bool hasBlockDeclRefExprs() const { return HasBlockDeclRefExprs; }
|
|
void setHasBlockDeclRefExprs(bool BDRE) { HasBlockDeclRefExprs = BDRE; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == BlockExprClass;
|
|
}
|
|
static bool classof(const BlockExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
/// BlockDeclRefExpr - A reference to a declared variable, function,
|
|
/// enum, etc.
|
|
class BlockDeclRefExpr : public Expr {
|
|
ValueDecl *D;
|
|
SourceLocation Loc;
|
|
bool IsByRef : 1;
|
|
bool ConstQualAdded : 1;
|
|
public:
|
|
BlockDeclRefExpr(ValueDecl *d, QualType t, SourceLocation l, bool ByRef,
|
|
bool constAdded = false) :
|
|
Expr(BlockDeclRefExprClass, t), D(d), Loc(l), IsByRef(ByRef),
|
|
ConstQualAdded(constAdded) {}
|
|
|
|
// \brief Build an empty reference to a declared variable in a
|
|
// block.
|
|
explicit BlockDeclRefExpr(EmptyShell Empty)
|
|
: Expr(BlockDeclRefExprClass, Empty) { }
|
|
|
|
ValueDecl *getDecl() { return D; }
|
|
const ValueDecl *getDecl() const { return D; }
|
|
void setDecl(ValueDecl *VD) { D = VD; }
|
|
|
|
SourceLocation getLocation() const { return Loc; }
|
|
void setLocation(SourceLocation L) { Loc = L; }
|
|
|
|
virtual SourceRange getSourceRange() const { return SourceRange(Loc); }
|
|
|
|
bool isByRef() const { return IsByRef; }
|
|
void setByRef(bool BR) { IsByRef = BR; }
|
|
|
|
bool isConstQualAdded() const { return ConstQualAdded; }
|
|
void setConstQualAdded(bool C) { ConstQualAdded = C; }
|
|
|
|
static bool classof(const Stmt *T) {
|
|
return T->getStmtClass() == BlockDeclRefExprClass;
|
|
}
|
|
static bool classof(const BlockDeclRefExpr *) { return true; }
|
|
|
|
// Iterators
|
|
virtual child_iterator child_begin();
|
|
virtual child_iterator child_end();
|
|
};
|
|
|
|
} // end namespace clang
|
|
|
|
#endif
|