mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-21 11:13:30 +00:00
409 lines
13 KiB
C
409 lines
13 KiB
C
/*
|
|
* Copyright (c) 1980, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)pi.c 8.1 (Berkeley) 6/6/93";
|
|
#endif
|
|
static const char rcsid[] =
|
|
"$Id$";
|
|
#endif /* not lint */
|
|
|
|
#include <ctype.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "error.h"
|
|
|
|
extern char *currentfilename;
|
|
static char *c_linenumber;
|
|
static char *unk_hdr[] = {"In", "program", "???"};
|
|
static char **c_header = &unk_hdr[0];
|
|
|
|
/*
|
|
* Attempt to handle error messages produced by pi (and by pc)
|
|
*
|
|
* problem #1: There is no file name available when a file does not
|
|
* use a #include; this will have to be given to error
|
|
* in the command line.
|
|
* problem #2: pi doesn't always tell you what line number
|
|
* a error refers to; for example during the tree
|
|
* walk phase of code generation and error detection,
|
|
* an error can refer to "variable foo in procedure bletch"
|
|
* without giving a line number
|
|
* problem #3: line numbers, when available, are attached to
|
|
* the source line, along with the source line itself
|
|
* These line numbers must be extracted, and
|
|
* the source line thrown away.
|
|
* problem #4: Some error messages produce more than one line number
|
|
* on the same message.
|
|
* There are only two (I think):
|
|
* %s undefined on line%s
|
|
* %s improperly used on line%s
|
|
* here, the %s makes line plural or singular.
|
|
*
|
|
* Here are the error strings used in pi version 1.2 that can refer
|
|
* to a file name or line number:
|
|
*
|
|
* Multiply defined label in case, lines %d and %d
|
|
* Goto %s from line %d is into a structured statement
|
|
* End matched %s on line %d
|
|
* Inserted keyword end matching %s on line %d
|
|
*
|
|
* Here are the general pi patterns recognized:
|
|
* define piptr == -.*^-.*
|
|
* define msg = .*
|
|
* define digit = [0-9]
|
|
* definename = .*
|
|
* define date_format letter*3 letter*3 (digit | (digit digit))
|
|
* (digit | (digit digit)):digit*2 digit*4
|
|
*
|
|
* {e,E} (piptr) (msg) Encounter an error during textual scan
|
|
* E {digit}* - (msg) Have an error message that refers to a new line
|
|
* E - msg Have an error message that refers to current
|
|
* function, program or procedure
|
|
* (date_format) (name): When switch compilation files
|
|
* ... (msg) When refer to the previous line
|
|
* 'In' ('procedure'|'function'|'program') (name):
|
|
* pi is now complaining about 2nd pass errors.
|
|
*
|
|
* Here is the output from a compilation
|
|
*
|
|
*
|
|
* 2 var i:integer;
|
|
* e --------------^--- Inserted ';'
|
|
* E 2 - All variables must be declared in one var part
|
|
* E 5 - Include filename must end in .i
|
|
* Mon Apr 21 15:56 1980 test.h:
|
|
* 2 begin
|
|
* e ------^--- Inserted ';'
|
|
* Mon Apr 21 16:06 1980 test.p:
|
|
* E 2 - Function type must be specified
|
|
* 6 procedure foo(var x:real);
|
|
* e ------^--- Inserted ';'
|
|
* In function bletch:
|
|
* E - No assignment to the function variable
|
|
* w - variable x is never used
|
|
* E 6 - foo is already defined in this block
|
|
* In procedure foo:
|
|
* w - variable x is neither used nor set
|
|
* 9 z : = 23;
|
|
* E --------------^--- Undefined variable
|
|
* 10 y = [1];
|
|
* e ----------------^--- Inserted ':'
|
|
* 13 z := 345.;
|
|
* e -----------------------^--- Digits required after decimal point
|
|
* E 10 - Constant set involved in non set context
|
|
* E 11 - Type clash: real is incompatible with integer
|
|
* ... Type of expression clashed with type of variable in assignment
|
|
* E 12 - Parameter type not identical to type of var parameter x of foo
|
|
* In program mung:
|
|
* w - variable y is never used
|
|
* w - type foo is never used
|
|
* w - function bletch is never used
|
|
* E - z undefined on lines 9 13
|
|
*/
|
|
char *Months[] = {
|
|
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
|
|
"Jul", "Aug", "Sep", "Oct","Nov", "Dec",
|
|
0
|
|
};
|
|
char *Days[] = {
|
|
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", 0
|
|
};
|
|
char *Piroutines[] = {
|
|
"program", "function", "procedure", 0
|
|
};
|
|
|
|
|
|
static boolean structured, multiple;
|
|
|
|
char *pi_Endmatched[] = {"End", "matched"};
|
|
char *pi_Inserted[] = {"Inserted", "keyword", "end", "matching"};
|
|
|
|
char *pi_multiple[] = {"Mutiply", "defined", "label", "in", "case,", "line"};
|
|
char *pi_structured[] = {"is", "into", "a", "structured", "statement"};
|
|
|
|
char *pi_und1[] = {"undefined", "on", "line"};
|
|
char *pi_und2[] = {"undefined", "on", "lines"};
|
|
char *pi_imp1[] = {"improperly", "used", "on", "line"};
|
|
char *pi_imp2[] = {"improperly", "used", "on", "lines"};
|
|
|
|
boolean alldigits(string)
|
|
reg char *string;
|
|
{
|
|
for (; *string && isdigit(*string); string++)
|
|
continue;
|
|
return(*string == '\0');
|
|
}
|
|
boolean instringset(member, set)
|
|
char *member;
|
|
reg char **set;
|
|
{
|
|
for(; *set; set++){
|
|
if (strcmp(*set, member) == 0)
|
|
return(TRUE);
|
|
}
|
|
return(FALSE);
|
|
}
|
|
|
|
boolean isdateformat(wordc, wordv)
|
|
int wordc;
|
|
char **wordv;
|
|
{
|
|
return(
|
|
(wordc == 5)
|
|
&& (instringset(wordv[0], Days))
|
|
&& (instringset(wordv[1], Months))
|
|
&& (alldigits(wordv[2]))
|
|
&& (alldigits(wordv[4])) );
|
|
}
|
|
|
|
boolean piptr(string)
|
|
reg char *string;
|
|
{
|
|
if (*string != '-')
|
|
return(FALSE);
|
|
while (*string && *string == '-')
|
|
string++;
|
|
if (*string != '^')
|
|
return(FALSE);
|
|
string++;
|
|
while (*string && *string == '-')
|
|
string++;
|
|
return(*string == '\0');
|
|
}
|
|
|
|
extern int wordc;
|
|
extern char **wordv;
|
|
|
|
Errorclass pi()
|
|
{
|
|
char **nwordv;
|
|
|
|
if (wordc < 2)
|
|
return (C_UNKNOWN);
|
|
if ( ( strlen(wordv[1]) == 1)
|
|
&& ( (wordv[1][0] == 'e') || (wordv[1][0] == 'E') )
|
|
&& ( piptr(wordv[2]) )
|
|
) {
|
|
boolean longpiptr = 0;
|
|
/*
|
|
* We have recognized a first pass error of the form:
|
|
* letter ------^---- message
|
|
*
|
|
* turn into an error message of the form:
|
|
*
|
|
* file line 'pascal errortype' letter \n |---- message
|
|
* or of the form:
|
|
* file line letter |---- message
|
|
* when there are strlen("(*[pi]") or more
|
|
* preceding '-' on the error pointer.
|
|
*
|
|
* Where the | is intended to be a down arrow, so that
|
|
* the pi error messages can be inserted above the
|
|
* line in error, instead of below. (All of the other
|
|
* langauges put thier messages before the source line,
|
|
* instead of after it as does pi.)
|
|
*
|
|
* where the pointer to the error has been truncated
|
|
* by 6 characters to account for the fact that
|
|
* the pointer points into a tab preceded input line.
|
|
*/
|
|
language = INPI;
|
|
(void)substitute(wordv[2], '^', '|');
|
|
longpiptr = position(wordv[2],'|') > (6+8);
|
|
nwordv = wordvsplice(longpiptr ? 2 : 4, wordc, wordv+1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = strsave(c_linenumber);
|
|
if (!longpiptr){
|
|
nwordv[2] = "pascal errortype";
|
|
nwordv[3] = wordv[1];
|
|
nwordv[4] = strsave("%%%\n");
|
|
if (strlen(nwordv[5]) > (8-2)) /* this is the pointer */
|
|
nwordv[5] += (8-2); /* bump over 6 characters */
|
|
}
|
|
wordv = nwordv - 1; /* convert to 1 based */
|
|
wordc += longpiptr ? 2 : 4;
|
|
return(C_TRUE);
|
|
}
|
|
if ( (wordc >= 4)
|
|
&& (strlen(wordv[1]) == 1)
|
|
&& ( (*wordv[1] == 'E') || (*wordv[1] == 'w') || (*wordv[1] == 'e') )
|
|
&& (alldigits(wordv[2]))
|
|
&& (strlen(wordv[3]) == 1)
|
|
&& (wordv[3][0] == '-')
|
|
){
|
|
/*
|
|
* Message of the form: letter linenumber - message
|
|
* Turn into form: filename linenumber letter - message
|
|
*/
|
|
language = INPI;
|
|
nwordv = wordvsplice(1, wordc, wordv + 1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = wordv[2];
|
|
nwordv[2] = wordv[1];
|
|
c_linenumber = wordv[2];
|
|
wordc += 1;
|
|
wordv = nwordv - 1;
|
|
return(C_TRUE);
|
|
}
|
|
if ( (wordc >= 3)
|
|
&& (strlen(wordv[1]) == 1)
|
|
&& ( (*(wordv[1]) == 'E') || (*(wordv[1]) == 'w') || (*(wordv[1]) == 'e') )
|
|
&& (strlen(wordv[2]) == 1)
|
|
&& (wordv[2][0] == '-')
|
|
) {
|
|
/*
|
|
* Message of the form: letter - message
|
|
* This happens only when we are traversing the tree
|
|
* during the second pass of pi, and discover semantic
|
|
* errors.
|
|
*
|
|
* We have already (presumably) saved the header message
|
|
* and can now construct a nulled error message for the
|
|
* current file.
|
|
*
|
|
* Turns into a message of the form:
|
|
* filename (header) letter - message
|
|
*
|
|
* First, see if it is a message referring to more than
|
|
* one line number. Only of the form:
|
|
* %s undefined on line%s
|
|
* %s improperly used on line%s
|
|
*/
|
|
boolean undefined = 0;
|
|
int wordindex;
|
|
|
|
language = INPI;
|
|
if ( (undefined = (wordvcmp(wordv+2, 3, pi_und1) == 0) )
|
|
|| (undefined = (wordvcmp(wordv+2, 3, pi_und2) == 0) )
|
|
|| (wordvcmp(wordv+2, 4, pi_imp1) == 0)
|
|
|| (wordvcmp(wordv+2, 4, pi_imp2) == 0)
|
|
){
|
|
for (wordindex = undefined ? 5 : 6; wordindex <= wordc;
|
|
wordindex++){
|
|
nwordv = wordvsplice(2, undefined ? 2 : 3, wordv+1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = wordv[wordindex];
|
|
if (wordindex != wordc)
|
|
erroradd(undefined ? 4 : 5, nwordv,
|
|
C_TRUE, C_UNKNOWN);
|
|
}
|
|
wordc = undefined ? 4 : 5;
|
|
wordv = nwordv - 1;
|
|
return(C_TRUE);
|
|
}
|
|
|
|
nwordv = wordvsplice(1+3, wordc, wordv+1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = strsave(c_header[0]);
|
|
nwordv[2] = strsave(c_header[1]);
|
|
nwordv[3] = strsave(c_header[2]);
|
|
wordv = nwordv - 1;
|
|
wordc += 1 + 3;
|
|
return(C_THISFILE);
|
|
}
|
|
if (strcmp(wordv[1], "...") == 0){
|
|
/*
|
|
* have a continuation error message
|
|
* of the form: ... message
|
|
* Turn into form : filename linenumber message
|
|
*/
|
|
language = INPI;
|
|
nwordv = wordvsplice(1, wordc, wordv+1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = strsave(c_linenumber);
|
|
wordv = nwordv - 1;
|
|
wordc += 1;
|
|
return(C_TRUE);
|
|
}
|
|
if( (wordc == 6)
|
|
&& (lastchar(wordv[6]) == ':')
|
|
&& (isdateformat(5, wordv + 1))
|
|
){
|
|
/*
|
|
* Have message that tells us we have changed files
|
|
*/
|
|
language = INPI;
|
|
currentfilename = strsave(wordv[6]);
|
|
clob_last(currentfilename, '\0');
|
|
return(C_SYNC);
|
|
}
|
|
if( (wordc == 3)
|
|
&& (strcmp(wordv[1], "In") == 0)
|
|
&& (lastchar(wordv[3]) == ':')
|
|
&& (instringset(wordv[2], Piroutines))
|
|
) {
|
|
language = INPI;
|
|
c_header = wordvsplice(0, wordc, wordv+1);
|
|
return(C_SYNC);
|
|
}
|
|
/*
|
|
* now, check for just the line number followed by the text
|
|
*/
|
|
if (alldigits(wordv[1])){
|
|
language = INPI;
|
|
c_linenumber = wordv[1];
|
|
return(C_IGNORE);
|
|
}
|
|
/*
|
|
* Attempt to match messages refering to a line number
|
|
*
|
|
* Multiply defined label in case, lines %d and %d
|
|
* Goto %s from line %d is into a structured statement
|
|
* End matched %s on line %d
|
|
* Inserted keyword end matching %s on line %d
|
|
*/
|
|
multiple = structured = 0;
|
|
if (
|
|
( (wordc == 6) && (wordvcmp(wordv+1, 2, pi_Endmatched) == 0))
|
|
|| ( (wordc == 8) && (wordvcmp(wordv+1, 4, pi_Inserted) == 0))
|
|
|| ( multiple = ((wordc == 9) && (wordvcmp(wordv+1,6, pi_multiple) == 0) ) )
|
|
|| ( structured = ((wordc == 10) && (wordvcmp(wordv+6,5, pi_structured) == 0 ) ))
|
|
){
|
|
language = INPI;
|
|
nwordv = wordvsplice(2, wordc, wordv+1);
|
|
nwordv[0] = strsave(currentfilename);
|
|
nwordv[1] = structured ? wordv [5] : wordv[wordc];
|
|
wordc += 2;
|
|
wordv = nwordv - 1;
|
|
if (!multiple)
|
|
return(C_TRUE);
|
|
erroradd(wordc, nwordv, C_TRUE, C_UNKNOWN);
|
|
nwordv = wordvsplice(0, wordc, nwordv);
|
|
nwordv[1] = wordv[wordc - 2];
|
|
return(C_TRUE);
|
|
}
|
|
return(C_UNKNOWN);
|
|
}
|