@@ -210,7 +210,6 @@ static void cp_lexer_commit_tokens
(cp_lexer *);
static void cp_lexer_rollback_tokens
(cp_lexer *);
-#ifdef ENABLE_CHECKING
static void cp_lexer_print_token
(FILE *, cp_token *);
static inline bool cp_lexer_debugging_p
@@ -219,15 +218,6 @@ static void cp_lexer_start_debugging
(cp_lexer *) ATTRIBUTE_UNUSED;
static void cp_lexer_stop_debugging
(cp_lexer *) ATTRIBUTE_UNUSED;
-#else
-/* If we define cp_lexer_debug_stream to NULL it will provoke warnings
- about passing NULL to functions that require non-NULL arguments
- (fputs, fprintf). It will never be used, so all we need is a value
- of the right type that's guaranteed not to be NULL. */
-#define cp_lexer_debug_stream stdout
-#define cp_lexer_print_token(str, tok) (void) 0
-#define cp_lexer_debugging_p(lexer) 0
-#endif /* ENABLE_CHECKING */
static cp_token_cache *cp_token_cache_new
(cp_token *, cp_token *);
@@ -241,33 +231,64 @@ static void cp_parser_initial_pragma
/* Variables. */
-#ifdef ENABLE_CHECKING
/* The stream to which debugging output should be written. */
static FILE *cp_lexer_debug_stream;
-#endif /* ENABLE_CHECKING */
/* Nonzero if we are parsing an unevaluated operand: an operand to
sizeof, typeof, or alignof. */
int cp_unevaluated_operand;
-#ifdef ENABLE_CHECKING
-/* Dump up to NUM tokens in BUFFER to FILE. If NUM is 0, dump all the
- tokens. */
+/* Dump up to NUM tokens in BUFFER to FILE starting with token
+ START_TOKEN. If START_TOKEN is NULL, the dump starts with the
+ first token in BUFFER. If NUM is 0, dump all the tokens. If
+ CURR_TOKEN is set and it is one of the tokens in BUFFER, it will be
+ highlighted by surrounding it in [[ ]]. */
-void
-cp_lexer_dump_tokens (FILE *file, VEC(cp_token,gc) *buffer, unsigned num)
+static void
+cp_lexer_dump_tokens (FILE *file, VEC(cp_token,gc) *buffer,
+ cp_token *start_token, unsigned num,
+ cp_token *curr_token)
{
- unsigned i;
+ unsigned i, nprinted;
cp_token *token;
+ bool do_print;
fprintf (file, "%u tokens\n", VEC_length (cp_token, buffer));
+ if (buffer == NULL)
+ return;
+
if (num == 0)
num = VEC_length (cp_token, buffer);
- for (i = 0; VEC_iterate (cp_token, buffer, i, token) && i < num; i++)
+ if (start_token == NULL)
+ start_token = VEC_address (cp_token, buffer);
+
+ if (start_token > VEC_address (cp_token, buffer))
+ {
+ cp_lexer_print_token (file, VEC_index (cp_token, buffer, 0));
+ fprintf (file, " ... ");
+ }
+
+ do_print = false;
+ nprinted = 0;
+ for (i = 0; VEC_iterate (cp_token, buffer, i, token) && nprinted < num; i++)
{
+ if (token == start_token)
+ do_print = true;
+
+ if (!do_print)
+ continue;
+
+ nprinted++;
+ if (token == curr_token)
+ fprintf (file, "[[");
+
cp_lexer_print_token (file, token);
+
+ if (token == curr_token)
+ fprintf (file, "]]");
+
switch (token->type)
{
case CPP_SEMICOLON:
@@ -298,9 +319,218 @@ cp_lexer_dump_tokens (FILE *file, VEC(cp_token,gc) *buffer, unsigned num)
void
cp_lexer_debug_tokens (VEC(cp_token,gc) *buffer)
{
- cp_lexer_dump_tokens (stderr, buffer, 0);
+ cp_lexer_dump_tokens (stderr, buffer, NULL, 0, NULL);
+}
+
+
+/* Dump the cp_parser tree field T to FILE if T is non-NULL. DESC is the
+ description for T. */
+
+static void
+cp_debug_print_tree_if_set (FILE *file, const char *desc, tree t)
+{
+ if (t)
+ {
+ fprintf (file, "%s: ", desc);
+ print_node_brief (file, "", t, 0);
+ }
+}
+
+
+/* Dump parser context C to FILE. */
+
+static void
+cp_debug_print_context (FILE *file, cp_parser_context *c)
+{
+ const char *status_s[] = { "OK", "ERROR", "COMMITTED" };
+ fprintf (file, "{ status = %s, scope = ", status_s[c->status]);
+ print_node_brief (file, "", c->object_type, 0);
+ fprintf (file, "}\n");
+}
+
+
+/* Print the stack of parsing contexts to FILE starting with FIRST. */
+
+static void
+cp_debug_print_context_stack (FILE *file, cp_parser_context *first)
+{
+ unsigned i;
+ cp_parser_context *c;
+
+ fprintf (file, "Parsing context stack:\n");
+ for (i = 0, c = first; c; c = c->next, i++)
+ {
+ fprintf (file, "\t#%u: ", i);
+ cp_debug_print_context (file, c);
+ }
+}
+
+
+/* Print the value of FLAG to FILE. DESC is a string describing the flag. */
+
+static void
+cp_debug_print_flag (FILE *file, const char *desc, bool flag)
+{
+ if (flag)
+ fprintf (file, "%s: true\n", desc);
+}
+
+
+/* Print an unparsed function entry UF to FILE. */
+
+static void
+cp_debug_print_unparsed_function (FILE *file, cp_unparsed_functions_entry *uf)
+{
+ unsigned i;
+ cp_default_arg_entry *default_arg_fn;
+ tree fn;
+
+ fprintf (file, "\tFunctions with default args:\n");
+ for (i = 0;
+ VEC_iterate (cp_default_arg_entry, uf->funs_with_default_args, i,
+ default_arg_fn);
+ i++)
+ {
+ fprintf (file, "\t\tClass type: ");
+ print_node_brief (file, "", default_arg_fn->class_type, 0);
+ fprintf (file, "\t\tDeclaration: ");
+ print_node_brief (file, "", default_arg_fn->decl, 0);
+ fprintf (file, "\n");
+ }
+
+ fprintf (file, "\n\tFunctions with definitions that require "
+ "post-processing\n\t\t");
+ for (i = 0; VEC_iterate (tree, uf->funs_with_definitions, i, fn); i++)
+ {
+ print_node_brief (file, "", fn, 0);
+ fprintf (file, " ");
+ }
+ fprintf (file, "\n");
+}
+
+
+/* Print the stack of unparsed member functions S to FILE. */
+
+static void
+cp_debug_print_unparsed_queues (FILE *file,
+ VEC(cp_unparsed_functions_entry, gc) *s)
+{
+ unsigned i;
+ cp_unparsed_functions_entry *uf;
+
+ fprintf (file, "Unparsed functions\n");
+ for (i = 0; VEC_iterate (cp_unparsed_functions_entry, s, i, uf); i++)
+ {
+ fprintf (file, "#%u:\n", i);
+ cp_debug_print_unparsed_function (file, uf);
+ }
+}
+
+
+/* Dump the tokens in a window of size WINDOW_SIZE around the next_token for
+ the given PARSER. If FILE is NULL, the output is printed on stderr. */
+
+static void
+cp_debug_parser_tokens (FILE *file, cp_parser *parser, int window_size)
+{
+ cp_token *next_token, *first_token, *start_token;
+
+ if (file == NULL)
+ file = stderr;
+
+ next_token = parser->lexer->next_token;
+ first_token = VEC_address (cp_token, parser->lexer->buffer);
+ start_token = (next_token > first_token + window_size / 2)
+ ? next_token - window_size / 2
+ : first_token;
+ cp_lexer_dump_tokens (file, parser->lexer->buffer, start_token, window_size,
+ next_token);
+}
+
+
+/* Dump debugging information for the given PARSER. If FILE is NULL,
+ the output is printed on stderr. */
+
+void
+cp_debug_parser (FILE *file, cp_parser *parser)
+{
+ const size_t window_size = 20;
+ cp_token *token;
+ expanded_location eloc;
+
+ if (file == NULL)
+ file = stderr;
+
+ fprintf (file, "Parser state\n\n");
+ fprintf (file, "Number of tokens: %u\n",
+ VEC_length (cp_token, parser->lexer->buffer));
+ cp_debug_print_tree_if_set (file, "Lookup scope", parser->scope);
+ cp_debug_print_tree_if_set (file, "Object scope",
+ parser->object_scope);
+ cp_debug_print_tree_if_set (file, "Qualifying scope",
+ parser->qualifying_scope);
+ cp_debug_print_context_stack (file, parser->context);
+ cp_debug_print_flag (file, "Allow GNU extensions",
+ parser->allow_gnu_extensions_p);
+ cp_debug_print_flag (file, "'>' token is greater-than",
+ parser->greater_than_is_operator_p);
+ cp_debug_print_flag (file, "Default args allowed in current "
+ "parameter list", parser->default_arg_ok_p);
+ cp_debug_print_flag (file, "Parsing integral constant-expression",
+ parser->integral_constant_expression_p);
+ cp_debug_print_flag (file, "Allow non-constant expression in current "
+ "constant-expression",
+ parser->allow_non_integral_constant_expression_p);
+ cp_debug_print_flag (file, "Seen non-constant expression",
+ parser->non_integral_constant_expression_p);
+ cp_debug_print_flag (file, "Local names and 'this' forbidden in "
+ "current context",
+ parser->local_variables_forbidden_p);
+ cp_debug_print_flag (file, "In unbraced linkage specification",
+ parser->in_unbraced_linkage_specification_p);
+ cp_debug_print_flag (file, "Parsing a declarator",
+ parser->in_declarator_p);
+ cp_debug_print_flag (file, "In template argument list",
+ parser->in_template_argument_list_p);
+ cp_debug_print_flag (file, "Parsing an iteration statement",
+ parser->in_statement & IN_ITERATION_STMT);
+ cp_debug_print_flag (file, "Parsing a switch statement",
+ parser->in_statement & IN_SWITCH_STMT);
+ cp_debug_print_flag (file, "Parsing a structured OpenMP block",
+ parser->in_statement & IN_OMP_BLOCK);
+ cp_debug_print_flag (file, "Parsing a an OpenMP loop",
+ parser->in_statement & IN_OMP_FOR);
+ cp_debug_print_flag (file, "Parsing an if statement",
+ parser->in_statement & IN_IF_STMT);
+ cp_debug_print_flag (file, "Parsing a type-id in an expression "
+ "context", parser->in_type_id_in_expr_p);
+ cp_debug_print_flag (file, "Declarations are implicitly extern \"C\"",
+ parser->implicit_extern_c);
+ cp_debug_print_flag (file, "String expressions should be translated "
+ "to execution character set",
+ parser->translate_strings_p);
+ cp_debug_print_flag (file, "Parsing function body outside of a "
+ "local class", parser->in_function_body);
+ cp_debug_print_flag (file, "Auto correct a colon to a scope operator",
+ parser->colon_corrects_to_scope_p);
+ if (parser->type_definition_forbidden_message)
+ fprintf (file, "Error message for forbidden type definitions: %s\n",
+ parser->type_definition_forbidden_message);
+ cp_debug_print_unparsed_queues (file, parser->unparsed_queues);
+ fprintf (file, "Number of class definitions in progress: %u\n",
+ parser->num_classes_being_defined);
+ fprintf (file, "Number of template parameter lists for the current "
+ "declaration: %u\n", parser->num_template_parameter_lists);
+ cp_debug_parser_tokens (file, parser, window_size);
+ token = parser->lexer->next_token;
+ fprintf (file, "Next token to parse:\n");
+ fprintf (file, "\tToken: ");
+ cp_lexer_print_token (file, token);
+ eloc = expand_location (token->location);
+ fprintf (file, "\n\tFile: %s\n", eloc.file);
+ fprintf (file, "\tLine: %d\n", eloc.line);
+ fprintf (file, "\tColumn: %d\n", eloc.column);
}
-#endif
/* Allocate memory for a new lexer object and return it. */
@@ -315,10 +545,9 @@ cp_lexer_alloc (void)
/* Allocate the memory. */
lexer = ggc_alloc_cleared_cp_lexer ();
-#ifdef ENABLE_CHECKING
/* Initially we are not debugging. */
lexer->debugging_p = false;
-#endif /* ENABLE_CHECKING */
+
lexer->saved_tokens = VEC_alloc (cp_token_position, heap,
CP_SAVED_TOKEN_STACK);
@@ -388,10 +617,8 @@ cp_lexer_new_from_tokens (cp_token_cache *cache)
lexer->saved_tokens = VEC_alloc (cp_token_position, heap,
CP_SAVED_TOKEN_STACK);
-#ifdef ENABLE_CHECKING
/* Initially we are not debugging. */
lexer->debugging_p = false;
-#endif
gcc_assert (!lexer->next_token->purged_p);
return lexer;
@@ -409,15 +636,12 @@ cp_lexer_destroy (cp_lexer *lexer)
/* Returns nonzero if debugging information should be output. */
-#ifdef ENABLE_CHECKING
-
static inline bool
cp_lexer_debugging_p (cp_lexer *lexer)
{
return lexer->debugging_p;
}
-#endif /* ENABLE_CHECKING */
static inline cp_token_position
cp_lexer_token_position (cp_lexer *lexer, bool previous_p)
@@ -852,8 +1076,6 @@ cp_lexer_rollback_tokens (cp_lexer* lexer)
/* Print a representation of the TOKEN on the STREAM. */
-#ifdef ENABLE_CHECKING
-
static void
cp_lexer_print_token (FILE * stream, cp_token *token)
{
@@ -914,6 +1136,7 @@ static void
cp_lexer_start_debugging (cp_lexer* lexer)
{
lexer->debugging_p = true;
+ cp_lexer_debug_stream = stderr;
}
/* Stop emitting debugging information. */
@@ -922,10 +1145,9 @@ static void
cp_lexer_stop_debugging (cp_lexer* lexer)
{
lexer->debugging_p = false;
+ cp_lexer_debug_stream = NULL;
}
-#endif /* ENABLE_CHECKING */
-
/* Create a new cp_token_cache, representing a range of tokens. */
static cp_token_cache *
@@ -352,9 +352,7 @@ typedef struct GTY(()) cp_parser {
} cp_parser;
/* In parser.c */
-#ifdef ENABLE_CHECKING
-extern void cp_lexer_dump_tokens (FILE *, VEC(cp_token,gc) *, unsigned);
extern void cp_lexer_debug_tokens (VEC(cp_token,gc) *);
-#endif
+extern void cp_debug_parser (FILE *, cp_parser *);
#endif /* GCC_CP_PARSER_H */