include/:

	* demangle.h: New cplus_demangle_print_callback,
	cplus_demangle_v3_callback, and java_demangle_v3_callback function
	prototypes, and demangle_callbackref type definition.
libiberty/:
	* cp-demangle.h (cplus_demangle_operators): External definition
	suppressed if not building for libstdc++.
	* cp-demangle.c (__gcclibcxx_demangle_callback): Augmented interface
	to demangling, provides a malloc-less version of __cxa_demangle.
	(cplus_demangle_print_callback): Public callback version of
	cplus_demangle_print.
	(struct d_growable_string): New growable string structure.
	(d_growable_string_init): New function, provides support for
	growable strings separate from print info.
	(d_growable_string_resize): Likewise.
	(d_growable_string_append_buffer): Likewise.
	(d_growable_string_callback_adapter):): Likewise.
	(d_print_init): New print info initialization function.
	(d_print_error): Macro replace by inline function.
	(d_print_saw_error): Likewise.
	(d_append_char): Likewise.
	(d_append_buffer): Likewise.
	(d_append_string): New inline function, replaces the
	d_append_string_constant macro.
	(d_flush_buffer): New function, flushes buffer to callback.
	(d_demangle_callback, is_ctor_or_dtor): Malloc-based fallback
	for unsupported dynamic arrays replaced by alloca().
	(d_demangle): Return string length estimating removed.
	(d_dump): Moved error case handling from call site into function.
	(d_print_resize): Function removed.
	(d_print_append_char): Likewise.
	(d_print_append_buffer): Likewise.
	(d_print_error): Likewise.
	(d_print_comp): Added special case handling for Java arrays.
	(java_demangle_v3): Removed string post-processing for Java arrays,
	now replaced by special case handling in d_print_comp.
	(cplus_demangle_v3_callback): Augmented interface to demangling,
	provides a malloc-less version of cplus_demangle_v3.
	(java_demangle_v3_callback): Augmented interface to demangling,
	provides a malloc-less version of java_demangle_v3.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@121305 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 42 insertions, 5 deletions

diff --git a/include/ChangeLog b/include/ChangeLog
index 572f45ad771..0e8b1500ca8 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,9 @@
+2007-01-29  Simon Baldwin <simonb@google.com>
+
+	* demangle.h: New cplus_demangle_print_callback,
+	cplus_demangle_v3_callback, and java_demangle_v3_callback function
+	prototypes, and demangle_callbackref type definition.
+
 2006-12-06  Nick Clifton  <nickc@redhat.com>
 
 	* ansidecl.h (ATTRIBUTE_PACKED): Define.
diff --git a/include/demangle.h b/include/demangle.h
index af294672736..360538cf397 100644
--- a/include/demangle.h
+++ b/include/demangle.h
@@ -1,6 +1,6 @@
 /* Defs for interface to demanglers.
    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002,
-   2003, 2004 Free Software Foundation, Inc.
+   2003, 2004, 2005, 2007 Free Software Foundation, Inc.
    
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -131,13 +131,25 @@ cplus_demangle_set_style (enum demangling_styles style);
 extern enum demangling_styles 
 cplus_demangle_name_to_style (const char *name);
 
-/* V3 ABI demangling entry points, defined in cp-demangle.c.  */
-extern char*
-cplus_demangle_v3 (const char* mangled, int options);
+/* Callback typedef for allocation-less demangler interfaces. */
+typedef void (*demangle_callbackref) (const char *, size_t, void *);
+
+/* V3 ABI demangling entry points, defined in cp-demangle.c.  Callback
+   variants return non-zero on success, zero on error.  char* variants
+   return a string allocated by malloc on success, NULL on error.  */
+extern int
+cplus_demangle_v3_callback (const char *mangled, int options,
+                            demangle_callbackref callback, void *opaque);
 
 extern char*
-java_demangle_v3 (const char* mangled);
+cplus_demangle_v3 (const char *mangled, int options);
 
+extern int
+java_demangle_v3_callback (const char *mangled,
+                           demangle_callbackref callback, void *opaque);
+
+extern char*
+java_demangle_v3 (const char *mangled);
 
 enum gnu_v3_ctor_kinds {
   gnu_v3_complete_object_ctor = 1,
@@ -529,6 +541,25 @@ cplus_demangle_print (int options,
                       int estimated_length,
                       size_t *p_allocated_size);
 
+/* This function takes a struct demangle_component tree and passes back
+   a demangled string in one or more calls to a callback function.
+   The first argument is DMGL_* options.  The second is the tree to
+   demangle.  The third is a pointer to a callback function; on each call
+   this receives an element of the demangled string, its length, and an
+   opaque value.  The fourth is the opaque value passed to the callback.
+   The callback is called once or more to return the full demangled
+   string.  The demangled element string is always nul-terminated, though
+   its length is also provided for convenience.  In contrast to
+   cplus_demangle_print(), this function does not allocate heap memory
+   to grow output strings (except perhaps where alloca() is implemented
+   by malloc()), and so is normally safe for use where the heap has been
+   corrupted.  On success, this function returns 1; on failure, 0.  */
+
+extern int
+cplus_demangle_print_callback (int options,
+                               const struct demangle_component *tree,
+                               demangle_callbackref callback, void *opaque);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */