Prevent nesting of text markup of the same type.

This greatly reduces the amount of detect element calls that are occurring.

src/context/context.rs

@@ -21,6 +21,9 @@ pub enum ContextElement<'r, 's> {
     /// Stores the name of the current element to prevent directly nesting elements of the same type.
     Context(&'r str),
 
+    /// Stores the name of the current object to prevent directly nesting elements of the same type.
+    ContextObject(&'r str),
+
     /// Indicates if elements should consume the whitespace after them.
     ConsumeTrailingWhitespace(bool),
 

src/parser/text_markup.rs

@@ -18,6 +18,7 @@ use tracing::span;
 use super::object_parser::standard_set_object;
 use super::org_source::OrgSource;
 use super::radio_link::RematchObject;
+use super::util::in_object_section;
 use super::util::maybe_consume_object_trailing_whitespace_if_not_exiting;
 use crate::context::parser_with_context;
 use crate::context::ContextElement;
@@ -177,16 +178,26 @@ fn _text_markup_object<'b, 'g, 'r, 's, 'c>(
     input: OrgSource<'s>,
     marker_symbol: &'c str,
 ) -> Res<OrgSource<'s>, Vec<Object<'s>>> {
+    if in_object_section(context, marker_symbol) {
+        return Err(nom::Err::Error(CustomError::MyError(MyError(
+            "Cannot nest objects of the same type".into(),
+        ))));
+    }
+
     let (remaining, _) = pre(context, input)?;
     let (remaining, open) = tag(marker_symbol)(remaining)?;
     let (remaining, _peek_not_whitespace) =
         peek(verify(anychar, |c| !c.is_whitespace() && *c != '\u{200B}'))(remaining)?;
     let text_markup_end_specialized = text_markup_end(open.into());
-    let parser_context = ContextElement::ExitMatcherNode(ExitMatcherNode {
-        class: ExitClass::Gamma,
-        exit_matcher: &text_markup_end_specialized,
-    });
-    let parser_context = context.with_additional_node(&parser_context);
+    let contexts = [
+        ContextElement::ContextObject(marker_symbol),
+        ContextElement::ExitMatcherNode(ExitMatcherNode {
+            class: ExitClass::Gamma,
+            exit_matcher: &text_markup_end_specialized,
+        }),
+    ];
+    let parser_context = context.with_additional_node(&contexts[0]);
+    let parser_context = parser_context.with_additional_node(&contexts[1]);
 
     let (remaining, (children, _exit_contents)) = verify(
         many_till(
@@ -230,16 +241,25 @@ fn _text_markup_string<'b, 'g, 'r, 's, 'c>(
     input: OrgSource<'s>,
     marker_symbol: &'c str,
 ) -> Res<OrgSource<'s>, OrgSource<'s>> {
+    if in_object_section(context, marker_symbol) {
+        return Err(nom::Err::Error(CustomError::MyError(MyError(
+            "Cannot nest objects of the same type".into(),
+        ))));
+    }
     let (remaining, _) = pre(context, input)?;
     let (remaining, open) = tag(marker_symbol)(remaining)?;
     let (remaining, _peek_not_whitespace) =
         peek(verify(anychar, |c| !c.is_whitespace() && *c != '\u{200B}'))(remaining)?;
     let text_markup_end_specialized = text_markup_end(open.into());
-    let parser_context = ContextElement::ExitMatcherNode(ExitMatcherNode {
-        class: ExitClass::Gamma,
-        exit_matcher: &text_markup_end_specialized,
-    });
-    let parser_context = context.with_additional_node(&parser_context);
+    let contexts = [
+        ContextElement::ContextObject(marker_symbol),
+        ContextElement::ExitMatcherNode(ExitMatcherNode {
+            class: ExitClass::Gamma,
+            exit_matcher: &text_markup_end_specialized,
+        }),
+    ];
+    let parser_context = context.with_additional_node(&contexts[0]);
+    let parser_context = parser_context.with_additional_node(&contexts[1]);
 
     let (remaining, contents) = recognize(verify(
         many_till(

src/parser/util.rs

@@ -24,7 +24,6 @@ pub const WORD_CONSTITUENT_CHARACTERS: &str =
     "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
 
 /// Check if we are below a section of the given section type regardless of depth
-#[allow(dead_code)]
 pub fn in_section<'b, 'g, 'r, 's, 'x>(
     context: RefContext<'b, 'g, 'r, 's>,
     section_name: &'x str,
@@ -53,6 +52,20 @@ pub fn immediate_in_section<'b, 'g, 'r, 's, 'x>(
     false
 }
 
+/// Check if we are below a section of the given section type regardless of depth
+pub fn in_object_section<'b, 'g, 'r, 's, 'x>(
+    context: RefContext<'b, 'g, 'r, 's>,
+    section_name: &'x str,
+) -> bool {
+    for thing in context.iter() {
+        match thing {
+            ContextElement::ContextObject(name) if *name == section_name => return true,
+            _ => {}
+        }
+    }
+    false
+}
+
 /// Get a slice of the string that was consumed in a parser using the original input to the parser and the remaining input after the parser.
 pub fn get_consumed<'s>(input: OrgSource<'s>, remaining: OrgSource<'s>) -> OrgSource<'s> {
     input.get_until(remaining)