From: Paul N. Hilfinger <hilfinger@adacore.com>
Date: Sat, 10 Apr 2004 22:10:01 +0000 (+0000)
Subject: * language.h (language_defn): Add new la_post_parser field.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e85c3284f3920865d80242a740dc7c4803f59840;p=binutils-gdb.git

* language.h (language_defn): Add new la_post_parser field.
* parser-defs.h (null_post_parser): New declaration (default for
la_post_parser).

* parse.c (parse_exp_1): Move code to parse_exp_in_context and
insert call to that function.
(parse_exp_in_context): New function, including code formerly in
parse_exp_1.  Calls language-dependent post-parser after
prefixification.
(parse_expression_in_context): New exported function.
(null_post_parser): New definition.
* expression.h (parse_expression_in_context): Add declaration.

* p-lang.c (pascal_language_defn): Add trivial post-parser.
* c-lang.c (c_language_defn): Ditto.
(cplus_language_defn): Ditto.
(asm_language_defn): Ditto.
(minimal_language_defn): Ditto.
* f-lang.c (f_language_defn): Ditto.
* jv-lang.c (java_language_defn): Ditto.
* language.c (unknown_language_defn): Ditto.
(auto_language_defn): Ditto.
(local_language_defn): Ditto.
* m2-lang.c (m2_language_defn): Ditto.
* scm-lang.c (scm_language_defn): Ditto.
* obj-lang.c (objc_language_defn): Ditto.
---

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 02f04a6fbfc..d7837292008 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,32 @@
+2004-03-10  Paul N. Hilfinger  <Hilfinger@gnat.com>
+
+	* language.h (language_defn): Add new la_post_parser field.
+	* parser-defs.h (null_post_parser): New declaration (default for
+	la_post_parser).
+	
+	* parse.c (parse_exp_1): Move code to parse_exp_in_context and
+	insert call to that function.
+	(parse_exp_in_context): New function, including code formerly in
+	parse_exp_1.  Calls language-dependent post-parser after 
+	prefixification.
+	(parse_expression_in_context): New exported function.
+	(null_post_parser): New definition.
+	* expression.h (parse_expression_in_context): Add declaration.
+	
+	* p-lang.c (pascal_language_defn): Add trivial post-parser.
+	* c-lang.c (c_language_defn): Ditto.
+	(cplus_language_defn): Ditto.
+	(asm_language_defn): Ditto.
+	(minimal_language_defn): Ditto.
+	* f-lang.c (f_language_defn): Ditto.
+	* jv-lang.c (java_language_defn): Ditto.
+	* language.c (unknown_language_defn): Ditto.
+	(auto_language_defn): Ditto.
+	(local_language_defn): Ditto.
+	* m2-lang.c (m2_language_defn): Ditto.
+	* scm-lang.c (scm_language_defn): Ditto.
+	* obj-lang.c (objc_language_defn): Ditto.
+	
 2004-04-10  Mark Kettenis  <kettenis@gnu.org>
 
 	* amd64nbsd-tdep.c (amd64nbsd_sigcontext_addr): Remove function.
diff --git a/gdb/c-lang.c b/gdb/c-lang.c
index ba34540f386..3b52890309a 100644
--- a/gdb/c-lang.c
+++ b/gdb/c-lang.c
@@ -546,6 +546,7 @@ const struct language_defn c_language_defn =
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
@@ -604,6 +605,7 @@ const struct language_defn cplus_language_defn =
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
@@ -639,6 +641,7 @@ const struct language_defn asm_language_defn =
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
@@ -679,6 +682,7 @@ const struct language_defn minimal_language_defn =
   &exp_descriptor_standard,
   c_preprocess_and_parse,
   c_error,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   c_emit_char,			/* Print a single char */
diff --git a/gdb/expression.h b/gdb/expression.h
index 03b45c2ef9a..2b09716e907 100644
--- a/gdb/expression.h
+++ b/gdb/expression.h
@@ -378,6 +378,8 @@ struct expression
 
 extern struct expression *parse_expression (char *);
 
+extern struct expression *parse_expression_in_context (char *, int);
+
 extern struct expression *parse_exp_1 (char **, struct block *, int);
 
 /* The innermost context required by the stack and register variables
diff --git a/gdb/f-lang.c b/gdb/f-lang.c
index 1e7cd45362c..0e30c70dd0d 100644
--- a/gdb/f-lang.c
+++ b/gdb/f-lang.c
@@ -465,6 +465,7 @@ const struct language_defn f_language_defn =
   &exp_descriptor_standard,
   f_parse,			/* parser */
   f_error,			/* parser error function */
+  null_post_parser,
   f_printchar,			/* Print character constant */
   f_printstr,			/* function to print string constant */
   f_emit_char,			/* Function to print a single character */
diff --git a/gdb/jv-lang.c b/gdb/jv-lang.c
index 6db6e88efa5..e8401916832 100644
--- a/gdb/jv-lang.c
+++ b/gdb/jv-lang.c
@@ -1036,6 +1036,7 @@ const struct language_defn java_language_defn =
   &exp_descriptor_java,
   java_parse,
   java_error,
+  null_post_parser,
   c_printchar,			/* Print a character constant */
   c_printstr,			/* Function to print string constant */
   java_emit_char,		/* Function to print a single character */
diff --git a/gdb/language.c b/gdb/language.c
index bc00b473a6c..b4d38ea364a 100644
--- a/gdb/language.c
+++ b/gdb/language.c
@@ -1279,6 +1279,7 @@ const struct language_defn unknown_language_defn =
   &exp_descriptor_standard,
   unk_lang_parser,
   unk_lang_error,
+  null_post_parser,
   unk_lang_printchar,		/* Print character constant */
   unk_lang_printstr,
   unk_lang_emit_char,
@@ -1315,6 +1316,7 @@ const struct language_defn auto_language_defn =
   &exp_descriptor_standard,
   unk_lang_parser,
   unk_lang_error,
+  null_post_parser,
   unk_lang_printchar,		/* Print character constant */
   unk_lang_printstr,
   unk_lang_emit_char,
@@ -1350,6 +1352,7 @@ const struct language_defn local_language_defn =
   &exp_descriptor_standard,
   unk_lang_parser,
   unk_lang_error,
+  null_post_parser,
   unk_lang_printchar,		/* Print character constant */
   unk_lang_printstr,
   unk_lang_emit_char,
diff --git a/gdb/language.h b/gdb/language.h
index 8ed9fb08417..27c1491d76d 100644
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -180,6 +180,14 @@ struct language_defn
 
     void (*la_error) (char *);
 
+    /* Given an expression *EXPP created by prefixifying the result of
+       la_parser, perform any remaining processing necessary to complete
+       its translation.  *EXPP may change; la_post_parser is responsible 
+       for releasing its previous contents, if necessary.  If 
+       VOID_CONTEXT_P, then no value is expected from the expression.  */
+
+    void (*la_post_parser) (struct expression ** expp, int void_context_p);
+
     void (*la_printchar) (int ch, struct ui_file * stream);
 
     void (*la_printstr) (struct ui_file * stream, char *string,
diff --git a/gdb/m2-lang.c b/gdb/m2-lang.c
index e5b6b500e7c..c66b70341e2 100644
--- a/gdb/m2-lang.c
+++ b/gdb/m2-lang.c
@@ -418,6 +418,7 @@ const struct language_defn m2_language_defn =
   &exp_descriptor_standard,
   m2_parse,			/* parser */
   m2_error,			/* parser error function */
+  null_post_parser,
   m2_printchar,			/* Print character constant */
   m2_printstr,			/* function to print string constant */
   m2_emit_char,			/* Function to print a single character */
diff --git a/gdb/objc-lang.c b/gdb/objc-lang.c
index 5c184f35d7a..ecbce77b190 100644
--- a/gdb/objc-lang.c
+++ b/gdb/objc-lang.c
@@ -662,6 +662,7 @@ const struct language_defn objc_language_defn = {
   &exp_descriptor_standard,
   objc_parse,
   objc_error,
+  null_post_parser,
   objc_printchar,		/* Print a character constant */
   objc_printstr,		/* Function to print string constant */
   objc_emit_char,
diff --git a/gdb/p-lang.c b/gdb/p-lang.c
index a4025322ca7..9ab55734a1d 100644
--- a/gdb/p-lang.c
+++ b/gdb/p-lang.c
@@ -454,6 +454,7 @@ const struct language_defn pascal_language_defn =
   &exp_descriptor_standard,
   pascal_parse,
   pascal_error,
+  null_post_parser,
   pascal_printchar,		/* Print a character constant */
   pascal_printstr,		/* Function to print string constant */
   pascal_emit_char,		/* Print a single char */
diff --git a/gdb/parse.c b/gdb/parse.c
index 3bf06b96a88..4af6d7c7bf0 100644
--- a/gdb/parse.c
+++ b/gdb/parse.c
@@ -102,6 +102,9 @@ static void prefixify_expression (struct expression *);
 static void prefixify_subexp (struct expression *, struct expression *, int,
 			      int);
 
+static struct expression *parse_exp_in_context (char **, struct block *, int, 
+						int);
+
 void _initialize_parse (void);
 
 /* Data structure for saving values of arglist_len for function calls whose
@@ -1020,6 +1023,16 @@ prefixify_subexp (struct expression *inexpr,
 
 struct expression *
 parse_exp_1 (char **stringptr, struct block *block, int comma)
+{
+  return parse_exp_in_context (stringptr, block, comma, 0);
+}
+
+/* As for parse_exp_1, except that if VOID_CONTEXT_P, then
+   no value is expected from the expression.  */
+
+static struct expression *
+parse_exp_in_context (char **stringptr, struct block *block, int comma, 
+		      int void_context_p)
 {
   struct cleanup *old_chain;
 
@@ -1076,6 +1089,8 @@ parse_exp_1 (char **stringptr, struct block *block, int comma)
 
   prefixify_expression (expout);
 
+  current_language->la_post_parser (&expout, void_context_p);
+
   if (expressiondebug)
     dump_prefix_expression (expout, gdb_stdlog);
 
@@ -1095,6 +1110,28 @@ parse_expression (char *string)
     error ("Junk after end of expression.");
   return exp;
 }
+
+
+/* As for parse_expression, except that if VOID_CONTEXT_P, then
+   no value is expected from the expression.  */
+
+struct expression *
+parse_expression_in_context (char *string, int void_context_p)
+{
+  struct expression *exp;
+  exp = parse_exp_in_context (&string, 0, 0, void_context_p);
+  if (*string != '\000')
+    error ("Junk after end of expression.");
+  return exp;
+}
+
+/* A post-parser that does nothing */
+
+/* ARGSUSED */
+void
+null_post_parser (struct expression **exp, int void_context_p)
+{
+}
 
 /* Stuff for maintaining a stack of types.  Currently just used by C, but
    probably useful for any language which declares its types "backwards".  */
diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h
index c84fcad2c1f..43a07c37466 100644
--- a/gdb/parser-defs.h
+++ b/gdb/parser-defs.h
@@ -172,6 +172,8 @@ extern char *op_name_standard (enum exp_opcode);
 
 extern struct type *follow_types (struct type *);
 
+extern void null_post_parser (struct expression **, int);
+
 /* During parsing of a C expression, the pointer to the next character
    is in this variable.  */
 
diff --git a/gdb/scm-lang.c b/gdb/scm-lang.c
index 872dcaf89fc..1c410766963 100644
--- a/gdb/scm-lang.c
+++ b/gdb/scm-lang.c
@@ -253,6 +253,7 @@ const struct language_defn scm_language_defn =
   &exp_descriptor_scm,
   scm_parse,
   c_error,
+  null_post_parser,
   scm_printchar,		/* Print a character constant */
   scm_printstr,			/* Function to print string constant */
   NULL,				/* Function to print a single character */