#include <setjmp.h>
#include "tree.h"
#include "input.h"
+#include "cpplib.h"
+#include "intl.h"
+#include "timevar.h"
#include "c-lex.h"
#include "c-tree.h"
+#include "c-pragma.h"
#include "flags.h"
#include "output.h"
#include "toplev.h"
/* Like YYERROR but do call yyerror. */
#define YYERROR1 { yyerror ("syntax error"); YYERROR; }
-/* Cause the `yydebug' variable to be defined. */
+/* Cause the "yydebug" variable to be defined. */
#define YYDEBUG 1
+
+/* Rename the "yyparse" function so that we can override it elsewhere. */
+#define yyparse yyparse_1
%}
%start program
%union {long itype; tree ttype; enum tree_code code;
- const char *filename; int lineno; int ends_in_label; }
+ const char *filename; int lineno; }
/* All identifiers that are not reserved words
and are not declared typedefs in the current block */
%token REALPART IMAGPART VA_ARG
%token PTR_VALUE PTR_BASE PTR_EXTENT
-/* Used in c-lex.c for parsing pragmas. */
-%token END_OF_LINE
-
/* Add precedence rules to solve dangling else s/r conflict */
%nonassoc IF
%nonassoc ELSE
%type <code> unop
+%type <ttype> ENUM STRUCT UNION IF ELSE WHILE DO FOR SWITCH CASE DEFAULT
+%type <ttype> BREAK CONTINUE RETURN GOTO ASM_KEYWORD SIZEOF TYPEOF ALIGNOF
%type <ttype> identifier IDENTIFIER TYPENAME CONSTANT expr nonnull_exprlist exprlist
%type <ttype> expr_no_commas cast_expr unary_expr primary string STRING
%type <ttype> maybe_attribute attributes attribute attribute_list attrib
%type <ttype> any_word extension
-%type <ttype> compstmt compstmt_nostart compstmt_primary_start
+%type <ttype> compstmt compstmt_start compstmt_nostart compstmt_primary_start
+%type <ttype> do_stmt_start poplevel
+%type <ttype> c99_block_start c99_block_end
%type <ttype> declarator
%type <ttype> notype_declarator after_type_declarator
%type <ttype> parm_declarator
%type <itype> setspecs
-%type <ends_in_label> lineno_stmt_or_label lineno_stmt_or_labels stmt_or_label
-
%type <filename> save_filename
%type <lineno> save_lineno
\f
/* Tell yyparse how to print a token's value, if yydebug is set. */
#define YYPRINT(FILE,YYCHAR,YYLVAL) yyprint(FILE,YYCHAR,YYLVAL)
-extern void yyprint PARAMS ((FILE *, int, YYSTYPE));
+
+static void yyprint PARAMS ((FILE *, int, YYSTYPE));
+static void yyerror PARAMS ((const char *));
+static inline int _yylex PARAMS ((void));
+static int yylex PARAMS ((void));
+static void init_reswords PARAMS ((void));
/* Add GC roots for variables local to this file. */
void
{ if (! start_function (current_declspecs, $3,
prefix_attributes, NULL_TREE))
YYERROR1;
- reinit_parse_for_function (); }
+ }
old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
{ if (! start_function (current_declspecs, $3,
prefix_attributes, NULL_TREE))
YYERROR1;
- reinit_parse_for_function (); }
+ }
old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
{ if (! start_function (NULL_TREE, $2,
prefix_attributes, NULL_TREE))
YYERROR1;
- reinit_parse_for_function (); }
+ }
old_style_parm_decls
{ store_parm_decls (); }
compstmt_or_error
{ $$ = build_unary_op (REALPART_EXPR, $2, 0); }
| IMAGPART cast_expr %prec UNARY
{ $$ = build_unary_op (IMAGPART_EXPR, $2, 0); }
- | VA_ARG '(' expr_no_commas ',' typename ')'
- { $$ = build_va_arg ($3, groktypename ($5)); }
;
sizeof:
| '(' error ')'
{ $$ = error_mark_node; }
| compstmt_primary_start compstmt_nostart ')'
- { tree rtl_exp;
- if (pedantic)
- pedwarn ("ISO C forbids braced-groups within expressions");
- pop_iterator_stack ();
+ { tree saved_last_tree;
+
+ if (pedantic)
+ pedwarn ("ISO C forbids braced-groups within expressions");
pop_label_level ();
- rtl_exp = expand_end_stmt_expr ($1);
- /* The statements have side effects, so the group does. */
- TREE_SIDE_EFFECTS (rtl_exp) = 1;
- if (TREE_CODE ($2) == BLOCK)
- {
- /* Make a BIND_EXPR for the BLOCK already made. */
- $$ = build (BIND_EXPR, TREE_TYPE (rtl_exp),
- NULL_TREE, rtl_exp, $2);
- /* Remove the block from the tree at this point.
- It gets put back at the proper place
- when the BIND_EXPR is expanded. */
- delete_block ($2);
- }
- else
- $$ = $2;
+ saved_last_tree = COMPOUND_BODY ($1);
+ RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
+ last_tree = saved_last_tree;
+ TREE_CHAIN (last_tree) = NULL_TREE;
+ if (!last_expr_type)
+ last_expr_type = void_type_node;
+ $$ = build1 (STMT_EXPR, last_expr_type, $1);
+ TREE_SIDE_EFFECTS ($$) = 1;
}
| compstmt_primary_start error ')'
{
- /* Make sure we call expand_end_stmt_expr. Otherwise
- we are likely to lose sequences and crash later. */
- pop_iterator_stack ();
pop_label_level ();
- expand_end_stmt_expr ($1);
+ last_tree = COMPOUND_BODY ($1);
+ TREE_CHAIN (last_tree) = NULL_TREE;
$$ = error_mark_node;
}
| primary '(' exprlist ')' %prec '.'
{ $$ = build_function_call ($1, $3); }
+ | VA_ARG '(' expr_no_commas ',' typename ')'
+ { $$ = build_va_arg ($3, groktypename ($5)); }
| primary '[' expr ']' %prec '.'
{ $$ = build_array_ref ($1, $3); }
| primary '.' identifier
{ }
;
-decls:
- lineno_decl
- | errstmt
- | decls lineno_decl
- | lineno_decl errstmt
- ;
-
/* records the type and storage class specs to use for processing
the declarators that follow.
Maintains a stack of outer-level values of current_declspecs,
It may use braces. */
initelt:
designator_list '=' initval
+ { if (pedantic && ! flag_isoc99)
+ pedwarn ("ISO C89 forbids specifying subobject to initialize"); }
| designator initval
+ { if (pedantic)
+ pedwarn ("obsolete use of designated initializer without `='"); }
| identifier ':'
- { set_init_label ($1); }
+ { set_init_label ($1);
+ if (pedantic)
+ pedwarn ("obsolete use of designated initializer with `:'"); }
initval
| initval
;
so don't include these productions in the Objective-C grammar. */
ifc
| '[' expr_no_commas ELLIPSIS expr_no_commas ']'
- { set_init_index ($2, $4); }
+ { set_init_index ($2, $4);
+ if (pedantic)
+ pedwarn ("ISO C forbids specifying range of elements to initialize"); }
| '[' expr_no_commas ']'
{ set_init_index ($2, NULL_TREE); }
end ifc
pop_function_context ();
YYERROR1;
}
- reinit_parse_for_function (); }
+ }
old_style_parm_decls
{ store_parm_decls (); }
/* This used to use compstmt_or_error.
There followed a repeated execution of that same rule,
which called YYERROR1 again, and so on. */
compstmt
- { finish_function (1);
- pop_function_context (); }
+ { tree decl = current_function_decl;
+ finish_function (1);
+ pop_function_context ();
+ add_decl_stmt (decl); }
;
notype_nested_function:
pop_function_context ();
YYERROR1;
}
- reinit_parse_for_function (); }
+ }
old_style_parm_decls
{ store_parm_decls (); }
/* This used to use compstmt_or_error.
There followed a repeated execution of that same rule,
which called YYERROR1 again, and so on. */
compstmt
- { finish_function (1);
- pop_function_context (); }
+ { tree decl = current_function_decl;
+ finish_function (1);
+ pop_function_context ();
+ add_decl_stmt (decl); }
;
/* Any kind of declarator (thus, all declarators allowed
{ $$ = $3; }
;
-/* at least one statement, the first of which parses without error. */
-/* stmts is used only after decls, so an invalid first statement
- is actually regarded as an invalid decl and part of the decls. */
+/* A nonempty series of declarations and statements (possibly followed by
+ some labels) that can form the body of a compound statement.
+ NOTE: we don't allow labels on declarations; this might seem like a
+ natural extension, but there would be a conflict between attributes
+ on the label and prefix attributes on the declaration. */
-stmts:
- lineno_stmt_or_labels
+stmts_and_decls:
+ lineno_stmt_decl_or_labels_ending_stmt
+ | lineno_stmt_decl_or_labels_ending_decl
+ | lineno_stmt_decl_or_labels_ending_label
{
- if (pedantic && $1)
- pedwarn ("ISO C forbids label at end of compound statement");
+ pedwarn ("deprecated use of label at end of compound statement");
}
+ | lineno_stmt_decl_or_labels_ending_error
;
-lineno_stmt_or_labels:
- lineno_stmt_or_label
- | lineno_stmt_or_labels lineno_stmt_or_label
- { $$ = $2; }
- | lineno_stmt_or_labels errstmt
- { $$ = 0; }
+lineno_stmt_decl_or_labels_ending_stmt:
+ lineno_stmt
+ | lineno_stmt_decl_or_labels_ending_stmt lineno_stmt
+ | lineno_stmt_decl_or_labels_ending_decl lineno_stmt
+ | lineno_stmt_decl_or_labels_ending_label lineno_stmt
+ | lineno_stmt_decl_or_labels_ending_error lineno_stmt
;
-xstmts:
- /* empty */
- | stmts
+lineno_stmt_decl_or_labels_ending_decl:
+ lineno_decl
+ | lineno_stmt_decl_or_labels_ending_stmt lineno_decl
+ { if (pedantic && !flag_isoc99)
+ pedwarn ("ISO C89 forbids mixed declarations and code"); }
+ | lineno_stmt_decl_or_labels_ending_decl lineno_decl
+ | lineno_stmt_decl_or_labels_ending_error lineno_decl
+ ;
+
+lineno_stmt_decl_or_labels_ending_label:
+ lineno_label
+ | lineno_stmt_decl_or_labels_ending_stmt lineno_label
+ | lineno_stmt_decl_or_labels_ending_decl lineno_label
+ | lineno_stmt_decl_or_labels_ending_label lineno_label
+ | lineno_stmt_decl_or_labels_ending_error lineno_label
+ ;
+
+lineno_stmt_decl_or_labels_ending_error:
+ errstmt
+ | lineno_stmt_decl_or_labels errstmt
+ ;
+
+lineno_stmt_decl_or_labels:
+ lineno_stmt_decl_or_labels_ending_stmt
+ | lineno_stmt_decl_or_labels_ending_decl
+ | lineno_stmt_decl_or_labels_ending_label
+ | lineno_stmt_decl_or_labels_ending_error
;
errstmt: error ';'
;
pushlevel: /* empty */
- { emit_line_note (input_filename, lineno);
- pushlevel (0);
+ { pushlevel (0);
clear_last_expr ();
- expand_start_bindings (0);
+ add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
ifobjc
if (objc_method_context)
add_objc_decls ();
}
;
+poplevel: /* empty */
+ { $$ = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); }
+
+/* Start and end blocks created for the new scopes of C99. */
+c99_block_start: /* empty */
+ { if (flag_isoc99)
+ {
+ $$ = c_begin_compound_stmt ();
+ pushlevel (0);
+ clear_last_expr ();
+ add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
+ifobjc
+ if (objc_method_context)
+ add_objc_decls ();
+end ifobjc
+ }
+ else
+ $$ = NULL_TREE;
+ }
+ ;
+
+/* Productions using c99_block_start and c99_block_end will need to do what's
+ in compstmt: RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); $$ = $2; where
+ $1 is the value of c99_block_start and $2 of c99_block_end. */
+c99_block_end: /* empty */
+ { if (flag_isoc99)
+ {
+ tree scope_stmt = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
+ $$ = poplevel (kept_level_p (), 0, 0);
+ SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmt))
+ = SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmt))
+ = $$;
+ }
+ else
+ $$ = NULL_TREE; }
+ ;
+
/* Read zero or more forward-declarations for labels
that nested functions can jump to. */
maybe_label_decls:
{
tree label = shadow_label (TREE_VALUE (link));
C_DECLARED_LABEL_FLAG (label) = 1;
- declare_nonlocal_label (label);
+ add_decl_stmt (label);
}
}
;
| error compstmt
;
-compstmt_start: '{' { compstmt_count++; }
+compstmt_start: '{' { compstmt_count++;
+ $$ = c_begin_compound_stmt (); }
compstmt_nostart: '}'
{ $$ = convert (void_type_node, integer_zero_node); }
- | pushlevel maybe_label_decls decls xstmts '}'
- { emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), 1, 0);
- $$ = poplevel (1, 1, 0); }
- | pushlevel maybe_label_decls error '}'
- { emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), kept_level_p (), 0);
- $$ = poplevel (kept_level_p (), 0, 0); }
- | pushlevel maybe_label_decls stmts '}'
- { emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), kept_level_p (), 0);
- $$ = poplevel (kept_level_p (), 0, 0); }
+ | pushlevel maybe_label_decls compstmt_contents_nonempty '}' poplevel
+ { $$ = poplevel (kept_level_p (), 1, 0);
+ SCOPE_STMT_BLOCK (TREE_PURPOSE ($5))
+ = SCOPE_STMT_BLOCK (TREE_VALUE ($5))
+ = $$; }
+ ;
+
+compstmt_contents_nonempty:
+ stmts_and_decls
+ | error
;
compstmt_primary_start:
there is a way to turn off the entire subtree of blocks
that are contained in it. */
keep_next_level ();
- push_iterator_stack ();
push_label_level ();
- $$ = expand_start_stmt_expr ();
compstmt_count++;
+ $$ = add_stmt (build_stmt (COMPOUND_STMT, last_tree));
}
compstmt: compstmt_start compstmt_nostart
- { $$ = $2; }
+ { RECHAIN_STMTS ($1, COMPOUND_BODY ($1));
+ $$ = $2; }
;
/* Value is number of statements counted as of the closeparen. */
simple_if:
- if_prefix lineno_labeled_stmt
+ if_prefix c99_block_lineno_labeled_stmt
+ { c_finish_then (); }
/* Make sure c_expand_end_cond is run once
for each call to c_expand_start_cond.
Otherwise a crash is likely. */
if_prefix:
IF '(' expr ')'
- { emit_line_note ($<filename>-1, $<lineno>0);
- c_expand_start_cond (truthvalue_conversion ($3), 0,
+ { c_expand_start_cond (truthvalue_conversion ($3),
compstmt_count);
$<itype>$ = stmt_count;
- if_stmt_file = $<filename>-1;
- if_stmt_line = $<lineno>0;
- position_after_white_space (); }
+ if_stmt_file = $<filename>-2;
+ if_stmt_line = $<lineno>-1; }
;
/* This is a subroutine of stmt.
DO
{ stmt_count++;
compstmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
- /* See comment in `while' alternative, above. */
- emit_nop ();
- expand_start_loop_continue_elsewhere (1);
- position_after_white_space (); }
- lineno_labeled_stmt WHILE
- { expand_loop_continue_here (); }
- ;
-
+ $<ttype>$
+ = add_stmt (build_stmt (DO_STMT, NULL_TREE,
+ NULL_TREE));
+ /* In the event that a parse error prevents
+ parsing the complete do-statement, set the
+ condition now. Otherwise, we can get crashes at
+ RTL-generation time. */
+ DO_COND ($<ttype>$) = error_mark_node; }
+ c99_block_lineno_labeled_stmt WHILE
+ { $$ = $<ttype>2;
+ RECHAIN_STMTS ($$, DO_BODY ($$)); }
+ ;
+
+/* The forced readahead in here is because we might be at the end of a
+ line, and the line and file won't be bumped until yylex absorbs the
+ first token on the next line. */
save_filename:
- { $$ = input_filename; }
+ { if (yychar == YYEMPTY)
+ yychar = YYLEX;
+ $$ = input_filename; }
;
save_lineno:
- { $$ = lineno; }
+ { if (yychar == YYEMPTY)
+ yychar = YYLEX;
+ $$ = lineno; }
;
lineno_labeled_stmt:
{ }
;
-lineno_stmt_or_label:
- save_filename save_lineno stmt_or_label
- { $$ = $3; }
+/* Like lineno_labeled_stmt, but a block in C99. */
+c99_block_lineno_labeled_stmt:
+ c99_block_start lineno_labeled_stmt c99_block_end
+ { if (flag_isoc99)
+ RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
;
-stmt_or_label:
- stmt
- { $$ = 0; }
- | label
- { $$ = 1; }
+lineno_stmt:
+ save_filename save_lineno stmt
+ { }
;
-/* Parse a single real statement, not including any labels. */
-stmt:
- compstmt
- { stmt_count++; }
- | all_iter_stmt
- | expr ';'
- { stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
-/* It appears that this should not be done--that a non-lvalue array
- shouldn't get an error if the value isn't used.
- Section 3.2.2.1 says that an array lvalue gets converted to a pointer
- if it appears as a top-level expression,
- but says nothing about non-lvalue arrays. */
-#if 0
- /* Call default_conversion to get an error
- on referring to a register array if pedantic. */
- if (TREE_CODE (TREE_TYPE ($1)) == ARRAY_TYPE
- || TREE_CODE (TREE_TYPE ($1)) == FUNCTION_TYPE)
- $1 = default_conversion ($1);
-#endif
- iterator_expand ($1); }
- | simple_if ELSE
+lineno_label:
+ save_filename save_lineno label
+ { }
+ ;
+
+select_or_iter_stmt:
+ simple_if ELSE
{ c_expand_start_else ();
- $<itype>1 = stmt_count;
- position_after_white_space (); }
- lineno_labeled_stmt
- { c_expand_end_cond ();
+ $<itype>1 = stmt_count; }
+ c99_block_lineno_labeled_stmt
+ { c_finish_else ();
+ c_expand_end_cond ();
if (extra_warnings && stmt_count == $<itype>1)
warning ("empty body in an else-statement"); }
| simple_if %prec IF
| simple_if ELSE error
{ c_expand_end_cond (); }
| WHILE
- { stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
- /* The emit_nop used to come before emit_line_note,
- but that made the nop seem like part of the preceding line.
- And that was confusing when the preceding line was
- inside of an if statement and was not really executed.
- I think it ought to work to put the nop after the line number.
- We will see. --rms, July 15, 1991. */
- emit_nop (); }
+ { stmt_count++; }
'(' expr ')'
- { /* Don't start the loop till we have succeeded
- in parsing the end test. This is to make sure
- that we end every loop we start. */
- expand_start_loop (1);
- emit_line_note (input_filename, lineno);
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion ($4));
- position_after_white_space (); }
- lineno_labeled_stmt
- { expand_end_loop (); }
+ { $4 = truthvalue_conversion ($4);
+ $<ttype>$
+ = add_stmt (build_stmt (WHILE_STMT, $4, NULL_TREE)); }
+ c99_block_lineno_labeled_stmt
+ { RECHAIN_STMTS ($<ttype>6, WHILE_BODY ($<ttype>6)); }
| do_stmt_start
'(' expr ')' ';'
- { emit_line_note (input_filename, lineno);
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion ($3));
- expand_end_loop (); }
-/* This rule is needed to make sure we end every loop we start. */
+ { DO_COND ($1) = truthvalue_conversion ($3); }
| do_stmt_start error
- { expand_end_loop (); }
+ { }
| FOR
- '(' xexpr ';'
+ { $<ttype>$ = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE,
+ NULL_TREE, NULL_TREE);
+ add_stmt ($<ttype>$); }
+ '(' for_init_stmt
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
- /* See comment in `while' alternative, above. */
- emit_nop ();
- if ($3) c_expand_expr_stmt ($3);
- /* Next step is to call expand_start_loop_continue_elsewhere,
- but wait till after we parse the entire for (...).
- Otherwise, invalid input might cause us to call that
- fn without calling expand_end_loop. */
- }
+ RECHAIN_STMTS ($<ttype>2, FOR_INIT_STMT ($<ttype>2)); }
xexpr ';'
- /* Can't emit now; wait till after expand_start_loop... */
- { $<lineno>7 = lineno;
- $<filename>$ = input_filename; }
+ { FOR_COND ($<ttype>2) = $6; }
xexpr ')'
- {
- /* Start the loop. Doing this after parsing
- all the expressions ensures we will end the loop. */
- expand_start_loop_continue_elsewhere (1);
- /* Emit the end-test, with a line number. */
- emit_line_note ($<filename>8, $<lineno>7);
- if ($6)
- expand_exit_loop_if_false (NULL_PTR,
- truthvalue_conversion ($6));
- $<lineno>7 = lineno;
- $<filename>8 = input_filename;
- position_after_white_space (); }
- lineno_labeled_stmt
- { /* Emit the increment expression, with a line number. */
- emit_line_note ($<filename>8, $<lineno>7);
- expand_loop_continue_here ();
- if ($9)
- c_expand_expr_stmt ($9);
- expand_end_loop (); }
+ { FOR_EXPR ($<ttype>2) = $9; }
+ c99_block_lineno_labeled_stmt
+ { RECHAIN_STMTS ($<ttype>2, FOR_BODY ($<ttype>2)); }
| SWITCH '(' expr ')'
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
- c_expand_start_case ($3);
- position_after_white_space (); }
- lineno_labeled_stmt
- { expand_end_case ($3); }
+ $<ttype>$ = c_start_case ($3); }
+ c99_block_lineno_labeled_stmt
+ { c_finish_case (); }
+ ;
+
+for_init_stmt:
+ xexpr ';'
+ { add_stmt (build_stmt (EXPR_STMT, $1)); }
+ | decl
+ { check_for_loop_decls (); }
+ ;
+
+/* Parse a single real statement, not including any labels. */
+stmt:
+ compstmt
+ { stmt_count++; }
+ | expr ';'
+ { stmt_count++;
+ c_expand_expr_stmt ($1); }
+ | c99_block_start select_or_iter_stmt c99_block_end
+ { if (flag_isoc99)
+ RECHAIN_STMTS ($1, COMPOUND_BODY ($1)); }
| BREAK ';'
- { build_break_stmt ();
- stmt_count++;
- genrtl_break_stmt (); }
+ { stmt_count++;
+ add_stmt (build_break_stmt ()); }
| CONTINUE ';'
- { build_continue_stmt ();
- stmt_count++;
- genrtl_continue_stmt (); }
+ { stmt_count++;
+ add_stmt (build_continue_stmt ()); }
| RETURN ';'
- { tree return_stmt = build_return_stmt (NULL_TREE);
- stmt_count++;
- genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
+ { stmt_count++;
+ c_expand_return (NULL_TREE); }
| RETURN expr ';'
- { tree return_stmt = build_return_stmt ($2);
- stmt_count++;
- genrtl_return_stmt (RETURN_EXPR(return_stmt)); }
+ { stmt_count++;
+ c_expand_return ($2); }
| ASM_KEYWORD maybe_type_qual '(' expr ')' ';'
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
STRIP_NOPS ($4);
if ((TREE_CODE ($4) == ADDR_EXPR
&& TREE_CODE (TREE_OPERAND ($4, 0)) == STRING_CST)
|| TREE_CODE ($4) == STRING_CST)
- expand_asm ($4);
+ {
+ if (TREE_CODE ($4) == ADDR_EXPR)
+ $4 = TREE_OPERAND ($4, 0);
+ if (TREE_CHAIN ($4))
+ $4 = combine_strings ($4);
+ add_stmt (build_stmt (ASM_STMT, NULL_TREE, $4,
+ NULL_TREE, NULL_TREE, NULL_TREE));
+ }
else
error ("argument of `asm' is not a constant string"); }
/* This is the case with just output operands. */
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ')' ';'
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
c_expand_asm_operands ($4, $6, NULL_TREE, NULL_TREE,
$2 == ridpointers[(int)RID_VOLATILE],
input_filename, lineno); }
/* This is the case with input operands as well. */
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':' asm_operands ')' ';'
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
c_expand_asm_operands ($4, $6, $8, NULL_TREE,
$2 == ridpointers[(int)RID_VOLATILE],
input_filename, lineno); }
| ASM_KEYWORD maybe_type_qual '(' expr ':' asm_operands ':'
asm_operands ':' asm_clobbers ')' ';'
{ stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
c_expand_asm_operands ($4, $6, $8, $10,
$2 == ridpointers[(int)RID_VOLATILE],
input_filename, lineno); }
| GOTO identifier ';'
{ tree decl;
stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
decl = lookup_label ($2);
if (decl != 0)
{
TREE_USED (decl) = 1;
- expand_goto (decl);
+ add_stmt (build_stmt (GOTO_STMT, decl));
}
}
| GOTO '*' expr ';'
{ if (pedantic)
pedwarn ("ISO C forbids `goto *expr;'");
stmt_count++;
- emit_line_note ($<filename>-1, $<lineno>0);
- expand_computed_goto (convert (ptr_type_node, $3)); }
+ $3 = convert (ptr_type_node, $3);
+ add_stmt (build_stmt (GOTO_STMT, $3)); }
| ';'
;
-all_iter_stmt:
- all_iter_stmt_simple
-/* | all_iter_stmt_with_decl */
- ;
-
-all_iter_stmt_simple:
- FOR '(' primary ')'
- {
- /* The value returned by this action is */
- /* 1 if everything is OK */
- /* 0 in case of error or already bound iterator */
-
- $<itype>$ = 0;
- if (TREE_CODE ($3) != VAR_DECL)
- error ("invalid `for (ITERATOR)' syntax");
- else if (! ITERATOR_P ($3))
- error ("`%s' is not an iterator",
- IDENTIFIER_POINTER (DECL_NAME ($3)));
- else if (ITERATOR_BOUND_P ($3))
- error ("`for (%s)' inside expansion of same iterator",
- IDENTIFIER_POINTER (DECL_NAME ($3)));
- else
- {
- $<itype>$ = 1;
- iterator_for_loop_start ($3);
- }
- }
- lineno_labeled_stmt
- {
- if ($<itype>5)
- iterator_for_loop_end ($3);
- }
-
-/* This really should allow any kind of declaration,
- for generality. Fix it before turning it back on.
-
-all_iter_stmt_with_decl:
- FOR '(' ITERATOR pushlevel setspecs iterator_spec ')'
- {
-*/ /* The value returned by this action is */
- /* 1 if everything is OK */
- /* 0 in case of error or already bound iterator */
-/*
- iterator_for_loop_start ($6);
- }
- lineno_labeled_stmt
- {
- iterator_for_loop_end ($6);
- emit_line_note (input_filename, lineno);
- expand_end_bindings (getdecls (), 1, 0);
- $<ttype>$ = poplevel (1, 1, 0);
- }
-*/
-
/* Any kind of label, including jump labels and case labels.
ANSI C accepts labels only before statements, but we allow them
also at the end of a compound statement. */
label: CASE expr_no_commas ':'
- { tree case_label_tree = build_case_label ($2, NULL_TREE);
- stmt_count++;
- genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
- position_after_white_space ();
- }
+ { stmt_count++;
+ do_case ($2, NULL_TREE); }
| CASE expr_no_commas ELLIPSIS expr_no_commas ':'
- { tree case_label_tree = build_case_label ($2, $4);
- stmt_count++;
- genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
- position_after_white_space ();
- }
+ { stmt_count++;
+ do_case ($2, $4); }
| DEFAULT ':'
- { tree case_label_tree = build_case_label (NULL_TREE, NULL_TREE);
+ { stmt_count++;
+ do_case (NULL_TREE, NULL_TREE); }
+ | identifier save_filename save_lineno ':' maybe_attribute
+ { tree label = define_label ($2, $3, $1);
stmt_count++;
- genrtl_case_label(CASE_LOW(case_label_tree), CASE_HIGH(case_label_tree));
- position_after_white_space ();
- }
- | identifier ':' maybe_attribute
- { tree label = define_label (input_filename, lineno, $1);
- stmt_count++;
- emit_nop ();
if (label)
{
- expand_label (label);
- decl_attributes (label, $3, NULL_TREE);
+ decl_attributes (label, $5, NULL_TREE);
+ add_stmt (build_stmt (LABEL_STMT, label));
}
- position_after_white_space (); }
+ }
;
/* Either a type-qualifier or nothing. First thing in an `asm' statement. */
;
reservedwords:
- ENUM { $$ = get_identifier (token_buffer); }
- | STRUCT { $$ = get_identifier (token_buffer); }
- | UNION { $$ = get_identifier (token_buffer); }
- | IF { $$ = get_identifier (token_buffer); }
- | ELSE { $$ = get_identifier (token_buffer); }
- | WHILE { $$ = get_identifier (token_buffer); }
- | DO { $$ = get_identifier (token_buffer); }
- | FOR { $$ = get_identifier (token_buffer); }
- | SWITCH { $$ = get_identifier (token_buffer); }
- | CASE { $$ = get_identifier (token_buffer); }
- | DEFAULT { $$ = get_identifier (token_buffer); }
- | BREAK { $$ = get_identifier (token_buffer); }
- | CONTINUE { $$ = get_identifier (token_buffer); }
- | RETURN { $$ = get_identifier (token_buffer); }
- | GOTO { $$ = get_identifier (token_buffer); }
- | ASM_KEYWORD { $$ = get_identifier (token_buffer); }
- | SIZEOF { $$ = get_identifier (token_buffer); }
- | TYPEOF { $$ = get_identifier (token_buffer); }
- | ALIGNOF { $$ = get_identifier (token_buffer); }
+ ENUM | STRUCT | UNION | IF | ELSE | WHILE | DO | FOR
+ | SWITCH | CASE | DEFAULT | BREAK | CONTINUE | RETURN
+ | GOTO | ASM_KEYWORD | SIZEOF | TYPEOF | ALIGNOF
| TYPESPEC | TYPE_QUAL
;
end ifobjc
%%
+
+/* yylex() is a thin wrapper around c_lex(), all it does is translate
+ cpplib.h's token codes into yacc's token codes. */
+
+static enum cpp_ttype last_token;
+
+/* The reserved keyword table. */
+struct resword
+{
+ const char *word;
+ ENUM_BITFIELD(rid) rid : 16;
+ unsigned int disable : 16;
+};
+
+/* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
+ _true_. */
+#define D_TRAD 0x01 /* not in traditional C */
+#define D_C89 0x02 /* not in C89 */
+#define D_EXT 0x04 /* GCC extension */
+#define D_EXT89 0x08 /* GCC extension incorporated in C99 */
+#define D_OBJC 0x10 /* Objective C only */
+#define D_YES 0x20 /* always starts disabled */
+
+static const struct resword reswords[] =
+{
+ { "_Bool", RID_BOOL, 0 },
+ { "_Complex", RID_COMPLEX, 0 },
+ { "__alignof", RID_ALIGNOF, 0 },
+ { "__alignof__", RID_ALIGNOF, 0 },
+ { "__asm", RID_ASM, 0 },
+ { "__asm__", RID_ASM, 0 },
+ { "__attribute", RID_ATTRIBUTE, 0 },
+ { "__attribute__", RID_ATTRIBUTE, 0 },
+ { "__bounded", RID_BOUNDED, 0 },
+ { "__bounded__", RID_BOUNDED, 0 },
+ { "__builtin_va_arg", RID_VA_ARG, 0 },
+ { "__complex", RID_COMPLEX, 0 },
+ { "__complex__", RID_COMPLEX, 0 },
+ { "__const", RID_CONST, 0 },
+ { "__const__", RID_CONST, 0 },
+ { "__extension__", RID_EXTENSION, 0 },
+ { "__imag", RID_IMAGPART, 0 },
+ { "__imag__", RID_IMAGPART, 0 },
+ { "__inline", RID_INLINE, 0 },
+ { "__inline__", RID_INLINE, 0 },
+ { "__label__", RID_LABEL, 0 },
+ { "__ptrbase", RID_PTRBASE, 0 },
+ { "__ptrbase__", RID_PTRBASE, 0 },
+ { "__ptrextent", RID_PTREXTENT, 0 },
+ { "__ptrextent__", RID_PTREXTENT, 0 },
+ { "__ptrvalue", RID_PTRVALUE, 0 },
+ { "__ptrvalue__", RID_PTRVALUE, 0 },
+ { "__real", RID_REALPART, 0 },
+ { "__real__", RID_REALPART, 0 },
+ { "__restrict", RID_RESTRICT, 0 },
+ { "__restrict__", RID_RESTRICT, 0 },
+ { "__signed", RID_SIGNED, 0 },
+ { "__signed__", RID_SIGNED, 0 },
+ { "__typeof", RID_TYPEOF, 0 },
+ { "__typeof__", RID_TYPEOF, 0 },
+ { "__unbounded", RID_UNBOUNDED, 0 },
+ { "__unbounded__", RID_UNBOUNDED, 0 },
+ { "__volatile", RID_VOLATILE, 0 },
+ { "__volatile__", RID_VOLATILE, 0 },
+ { "asm", RID_ASM, D_EXT },
+ { "auto", RID_AUTO, 0 },
+ { "break", RID_BREAK, 0 },
+ { "case", RID_CASE, 0 },
+ { "char", RID_CHAR, 0 },
+ { "const", RID_CONST, D_TRAD },
+ { "continue", RID_CONTINUE, 0 },
+ { "default", RID_DEFAULT, 0 },
+ { "do", RID_DO, 0 },
+ { "double", RID_DOUBLE, 0 },
+ { "else", RID_ELSE, 0 },
+ { "enum", RID_ENUM, 0 },
+ { "extern", RID_EXTERN, 0 },
+ { "float", RID_FLOAT, 0 },
+ { "for", RID_FOR, 0 },
+ { "goto", RID_GOTO, 0 },
+ { "if", RID_IF, 0 },
+ { "inline", RID_INLINE, D_TRAD|D_EXT89 },
+ { "int", RID_INT, 0 },
+ { "long", RID_LONG, 0 },
+ { "register", RID_REGISTER, 0 },
+ { "restrict", RID_RESTRICT, D_TRAD|D_C89 },
+ { "return", RID_RETURN, 0 },
+ { "short", RID_SHORT, 0 },
+ { "signed", RID_SIGNED, D_TRAD },
+ { "sizeof", RID_SIZEOF, 0 },
+ { "static", RID_STATIC, 0 },
+ { "struct", RID_STRUCT, 0 },
+ { "switch", RID_SWITCH, 0 },
+ { "typedef", RID_TYPEDEF, 0 },
+ { "typeof", RID_TYPEOF, D_TRAD|D_EXT },
+ { "union", RID_UNION, 0 },
+ { "unsigned", RID_UNSIGNED, 0 },
+ { "void", RID_VOID, 0 },
+ { "volatile", RID_VOLATILE, D_TRAD },
+ { "while", RID_WHILE, 0 },
+ifobjc
+ { "@class", RID_AT_CLASS, D_OBJC },
+ { "@compatibility_alias", RID_AT_ALIAS, D_OBJC },
+ { "@defs", RID_AT_DEFS, D_OBJC },
+ { "@encode", RID_AT_ENCODE, D_OBJC },
+ { "@end", RID_AT_END, D_OBJC },
+ { "@implementation", RID_AT_IMPLEMENTATION, D_OBJC },
+ { "@interface", RID_AT_INTERFACE, D_OBJC },
+ { "@private", RID_AT_PRIVATE, D_OBJC },
+ { "@protected", RID_AT_PROTECTED, D_OBJC },
+ { "@protocol", RID_AT_PROTOCOL, D_OBJC },
+ { "@public", RID_AT_PUBLIC, D_OBJC },
+ { "@selector", RID_AT_SELECTOR, D_OBJC },
+ { "id", RID_ID, D_OBJC },
+ { "bycopy", RID_BYCOPY, D_OBJC|D_YES },
+ { "byref", RID_BYREF, D_OBJC|D_YES },
+ { "in", RID_IN, D_OBJC|D_YES },
+ { "inout", RID_INOUT, D_OBJC|D_YES },
+ { "oneway", RID_ONEWAY, D_OBJC|D_YES },
+ { "out", RID_OUT, D_OBJC|D_YES },
+end ifobjc
+};
+#define N_reswords (sizeof reswords / sizeof (struct resword))
+
+/* Table mapping from RID_* constants to yacc token numbers.
+ Unfortunately we have to have entries for all the keywords in all
+ three languages. */
+static const short rid_to_yy[RID_MAX] =
+{
+ /* RID_STATIC */ SCSPEC,
+ /* RID_UNSIGNED */ TYPESPEC,
+ /* RID_LONG */ TYPESPEC,
+ /* RID_CONST */ TYPE_QUAL,
+ /* RID_EXTERN */ SCSPEC,
+ /* RID_REGISTER */ SCSPEC,
+ /* RID_TYPEDEF */ SCSPEC,
+ /* RID_SHORT */ TYPESPEC,
+ /* RID_INLINE */ SCSPEC,
+ /* RID_VOLATILE */ TYPE_QUAL,
+ /* RID_SIGNED */ TYPESPEC,
+ /* RID_AUTO */ SCSPEC,
+ /* RID_RESTRICT */ TYPE_QUAL,
+
+ /* C extensions */
+ /* RID_BOUNDED */ TYPE_QUAL,
+ /* RID_UNBOUNDED */ TYPE_QUAL,
+ /* RID_COMPLEX */ TYPESPEC,
+
+ /* C++ */
+ /* RID_FRIEND */ 0,
+ /* RID_VIRTUAL */ 0,
+ /* RID_EXPLICIT */ 0,
+ /* RID_EXPORT */ 0,
+ /* RID_MUTABLE */ 0,
+
+ /* ObjC */
+ /* RID_IN */ TYPE_QUAL,
+ /* RID_OUT */ TYPE_QUAL,
+ /* RID_INOUT */ TYPE_QUAL,
+ /* RID_BYCOPY */ TYPE_QUAL,
+ /* RID_BYREF */ TYPE_QUAL,
+ /* RID_ONEWAY */ TYPE_QUAL,
+
+ /* C */
+ /* RID_INT */ TYPESPEC,
+ /* RID_CHAR */ TYPESPEC,
+ /* RID_FLOAT */ TYPESPEC,
+ /* RID_DOUBLE */ TYPESPEC,
+ /* RID_VOID */ TYPESPEC,
+ /* RID_ENUM */ ENUM,
+ /* RID_STRUCT */ STRUCT,
+ /* RID_UNION */ UNION,
+ /* RID_IF */ IF,
+ /* RID_ELSE */ ELSE,
+ /* RID_WHILE */ WHILE,
+ /* RID_DO */ DO,
+ /* RID_FOR */ FOR,
+ /* RID_SWITCH */ SWITCH,
+ /* RID_CASE */ CASE,
+ /* RID_DEFAULT */ DEFAULT,
+ /* RID_BREAK */ BREAK,
+ /* RID_CONTINUE */ CONTINUE,
+ /* RID_RETURN */ RETURN,
+ /* RID_GOTO */ GOTO,
+ /* RID_SIZEOF */ SIZEOF,
+
+ /* C extensions */
+ /* RID_ASM */ ASM_KEYWORD,
+ /* RID_TYPEOF */ TYPEOF,
+ /* RID_ALIGNOF */ ALIGNOF,
+ /* RID_ATTRIBUTE */ ATTRIBUTE,
+ /* RID_VA_ARG */ VA_ARG,
+ /* RID_EXTENSION */ EXTENSION,
+ /* RID_IMAGPART */ IMAGPART,
+ /* RID_REALPART */ REALPART,
+ /* RID_LABEL */ LABEL,
+ /* RID_PTRBASE */ PTR_BASE,
+ /* RID_PTREXTENT */ PTR_EXTENT,
+ /* RID_PTRVALUE */ PTR_VALUE,
+
+ /* C++ */
+ /* RID_BOOL */ TYPESPEC,
+ /* RID_WCHAR */ 0,
+ /* RID_CLASS */ 0,
+ /* RID_PUBLIC */ 0,
+ /* RID_PRIVATE */ 0,
+ /* RID_PROTECTED */ 0,
+ /* RID_TEMPLATE */ 0,
+ /* RID_NULL */ 0,
+ /* RID_CATCH */ 0,
+ /* RID_DELETE */ 0,
+ /* RID_FALSE */ 0,
+ /* RID_NAMESPACE */ 0,
+ /* RID_NEW */ 0,
+ /* RID_OPERATOR */ 0,
+ /* RID_THIS */ 0,
+ /* RID_THROW */ 0,
+ /* RID_TRUE */ 0,
+ /* RID_TRY */ 0,
+ /* RID_TYPENAME */ 0,
+ /* RID_TYPEID */ 0,
+ /* RID_USING */ 0,
+
+ /* casts */
+ /* RID_CONSTCAST */ 0,
+ /* RID_DYNCAST */ 0,
+ /* RID_REINTCAST */ 0,
+ /* RID_STATCAST */ 0,
+
+ /* alternate spellings */
+ /* RID_AND */ 0,
+ /* RID_AND_EQ */ 0,
+ /* RID_NOT */ 0,
+ /* RID_NOT_EQ */ 0,
+ /* RID_OR */ 0,
+ /* RID_OR_EQ */ 0,
+ /* RID_XOR */ 0,
+ /* RID_XOR_EQ */ 0,
+ /* RID_BITAND */ 0,
+ /* RID_BITOR */ 0,
+ /* RID_COMPL */ 0,
+
+ /* Objective C */
+ /* RID_ID */ OBJECTNAME,
+ /* RID_AT_ENCODE */ ENCODE,
+ /* RID_AT_END */ END,
+ /* RID_AT_CLASS */ CLASS,
+ /* RID_AT_ALIAS */ ALIAS,
+ /* RID_AT_DEFS */ DEFS,
+ /* RID_AT_PRIVATE */ PRIVATE,
+ /* RID_AT_PROTECTED */ PROTECTED,
+ /* RID_AT_PUBLIC */ PUBLIC,
+ /* RID_AT_PROTOCOL */ PROTOCOL,
+ /* RID_AT_SELECTOR */ SELECTOR,
+ /* RID_AT_INTERFACE */ INTERFACE,
+ /* RID_AT_IMPLEMENTATION */ IMPLEMENTATION
+};
+
+static void
+init_reswords ()
+{
+ unsigned int i;
+ tree id;
+ int mask = ((doing_objc_thang ? 0 : D_OBJC)
+ | (flag_isoc99 ? 0 : D_C89)
+ | (flag_traditional ? D_TRAD : 0)
+ | (flag_no_asm ? (flag_isoc99 ? D_EXT : D_EXT|D_EXT89) : 0));
+
+ /* It is not necessary to register ridpointers as a GC root, because
+ all the trees it points to are permanently interned in the
+ get_identifier hash anyway. */
+ ridpointers = (tree *) xcalloc ((int) RID_MAX, sizeof (tree));
+ for (i = 0; i < N_reswords; i++)
+ {
+ /* If a keyword is disabled, do not enter it into the table
+ and so create a canonical spelling that isn't a keyword. */
+ if (reswords[i].disable & mask)
+ continue;
+
+ id = get_identifier (reswords[i].word);
+ C_RID_CODE (id) = reswords[i].rid;
+ ridpointers [(int) reswords[i].rid] = id;
+
+ /* Objective C does tricky things with enabling and disabling
+ keywords. So these we must not elide in the test above, but
+ wait and not mark them reserved now. */
+ if (! (reswords[i].disable & D_YES))
+ C_IS_RESERVED_WORD (id) = 1;
+ }
+}
+
+const char *
+init_parse (filename)
+ const char *filename;
+{
+ add_c_tree_codes ();
+
+ /* Make identifier nodes long enough for the language-specific slots. */
+ set_identifier_size (sizeof (struct lang_identifier));
+
+ init_reswords ();
+ init_pragma ();
+
+ return init_c_lex (filename);
+}
+
+void
+finish_parse ()
+{
+ cpp_finish (parse_in);
+ errorcount += parse_in->errors;
+}
+
+#define NAME(type) cpp_type2name (type)
+
+static void
+yyerror (msgid)
+ const char *msgid;
+{
+ const char *string = _(msgid);
+
+ if (last_token == CPP_EOF)
+ error ("%s at end of input", string);
+ else if (last_token == CPP_CHAR || last_token == CPP_WCHAR)
+ {
+ unsigned int val = TREE_INT_CST_LOW (yylval.ttype);
+ const char *ell = (last_token == CPP_CHAR) ? "" : "L";
+ if (val <= UCHAR_MAX && ISGRAPH (val))
+ error ("%s before %s'%c'", string, ell, val);
+ else
+ error ("%s before %s'\\x%x'", string, ell, val);
+ }
+ else if (last_token == CPP_STRING
+ || last_token == CPP_WSTRING
+ || last_token == CPP_OSTRING)
+ error ("%s before string constant", string);
+ else if (last_token == CPP_NUMBER
+ || last_token == CPP_INT
+ || last_token == CPP_FLOAT)
+ error ("%s before numeric constant", string);
+ else if (last_token == CPP_NAME)
+ error ("%s before \"%s\"", string, IDENTIFIER_POINTER (yylval.ttype));
+ else
+ error ("%s before '%s' token", string, NAME(last_token));
+}
+
+static inline int
+_yylex ()
+{
+ retry:
+ last_token = c_lex (&yylval.ttype);
+
+ switch (last_token)
+ {
+ case CPP_EQ: return '=';
+ case CPP_NOT: return '!';
+ case CPP_GREATER: yylval.code = GT_EXPR; return ARITHCOMPARE;
+ case CPP_LESS: yylval.code = LT_EXPR; return ARITHCOMPARE;
+ case CPP_PLUS: yylval.code = PLUS_EXPR; return '+';
+ case CPP_MINUS: yylval.code = MINUS_EXPR; return '-';
+ case CPP_MULT: yylval.code = MULT_EXPR; return '*';
+ case CPP_DIV: yylval.code = TRUNC_DIV_EXPR; return '/';
+ case CPP_MOD: yylval.code = TRUNC_MOD_EXPR; return '%';
+ case CPP_AND: yylval.code = BIT_AND_EXPR; return '&';
+ case CPP_OR: yylval.code = BIT_IOR_EXPR; return '|';
+ case CPP_XOR: yylval.code = BIT_XOR_EXPR; return '^';
+ case CPP_RSHIFT: yylval.code = RSHIFT_EXPR; return RSHIFT;
+ case CPP_LSHIFT: yylval.code = LSHIFT_EXPR; return LSHIFT;
+
+ case CPP_COMPL: return '~';
+ case CPP_AND_AND: return ANDAND;
+ case CPP_OR_OR: return OROR;
+ case CPP_QUERY: return '?';
+ case CPP_COLON: return ':';
+ case CPP_COMMA: return ',';
+ case CPP_OPEN_PAREN: return '(';
+ case CPP_CLOSE_PAREN: return ')';
+ case CPP_EQ_EQ: yylval.code = EQ_EXPR; return EQCOMPARE;
+ case CPP_NOT_EQ: yylval.code = NE_EXPR; return EQCOMPARE;
+ case CPP_GREATER_EQ:yylval.code = GE_EXPR; return ARITHCOMPARE;
+ case CPP_LESS_EQ: yylval.code = LE_EXPR; return ARITHCOMPARE;
+
+ case CPP_PLUS_EQ: yylval.code = PLUS_EXPR; return ASSIGN;
+ case CPP_MINUS_EQ: yylval.code = MINUS_EXPR; return ASSIGN;
+ case CPP_MULT_EQ: yylval.code = MULT_EXPR; return ASSIGN;
+ case CPP_DIV_EQ: yylval.code = TRUNC_DIV_EXPR; return ASSIGN;
+ case CPP_MOD_EQ: yylval.code = TRUNC_MOD_EXPR; return ASSIGN;
+ case CPP_AND_EQ: yylval.code = BIT_AND_EXPR; return ASSIGN;
+ case CPP_OR_EQ: yylval.code = BIT_IOR_EXPR; return ASSIGN;
+ case CPP_XOR_EQ: yylval.code = BIT_XOR_EXPR; return ASSIGN;
+ case CPP_RSHIFT_EQ: yylval.code = RSHIFT_EXPR; return ASSIGN;
+ case CPP_LSHIFT_EQ: yylval.code = LSHIFT_EXPR; return ASSIGN;
+
+ case CPP_OPEN_SQUARE: return '[';
+ case CPP_CLOSE_SQUARE: return ']';
+ case CPP_OPEN_BRACE: return '{';
+ case CPP_CLOSE_BRACE: return '}';
+ case CPP_SEMICOLON: return ';';
+ case CPP_ELLIPSIS: return ELLIPSIS;
+
+ case CPP_PLUS_PLUS: return PLUSPLUS;
+ case CPP_MINUS_MINUS: return MINUSMINUS;
+ case CPP_DEREF: return POINTSAT;
+ case CPP_DOT: return '.';
+
+ case CPP_EOF:
+ cpp_pop_buffer (parse_in);
+ if (! CPP_BUFFER (parse_in))
+ return 0;
+ goto retry;
+
+ case CPP_NAME:
+ if (C_IS_RESERVED_WORD (yylval.ttype))
+ {
+ enum rid rid_code = C_RID_CODE (yylval.ttype);
+ /* Return the canonical spelling for this keyword. */
+ yylval.ttype = ridpointers[(int) rid_code];
+ return rid_to_yy[(int) rid_code];
+ }
+
+ if (IDENTIFIER_POINTER (yylval.ttype)[0] == '@')
+ {
+ error ("invalid identifier `%s'", IDENTIFIER_POINTER (yylval.ttype));
+ return IDENTIFIER;
+ }
+
+ {
+ tree decl;
+
+ decl = lookup_name (yylval.ttype);
+
+ if (decl)
+ {
+ if (TREE_CODE (decl) == TYPE_DECL)
+ return TYPENAME;
+ /* A user-invisible read-only initialized variable
+ should be replaced by its value.
+ We handle only strings since that's the only case used in C. */
+ else if (TREE_CODE (decl) == VAR_DECL
+ && DECL_IGNORED_P (decl)
+ && TREE_READONLY (decl)
+ && DECL_INITIAL (decl) != 0
+ && TREE_CODE (DECL_INITIAL (decl)) == STRING_CST)
+ {
+ tree stringval = DECL_INITIAL (decl);
+
+ /* Copy the string value so that we won't clobber anything
+ if we put something in the TREE_CHAIN of this one. */
+ yylval.ttype = build_string (TREE_STRING_LENGTH (stringval),
+ TREE_STRING_POINTER (stringval));
+ return STRING;
+ }
+ }
+ else if (doing_objc_thang)
+ {
+ tree objc_interface_decl = is_class_name (yylval.ttype);
+
+ if (objc_interface_decl)
+ {
+ yylval.ttype = objc_interface_decl;
+ return CLASSNAME;
+ }
+ }
+
+ return IDENTIFIER;
+ }
+
+ case CPP_INT:
+ case CPP_FLOAT:
+ case CPP_NUMBER:
+ case CPP_CHAR:
+ case CPP_WCHAR:
+ return CONSTANT;
+
+ case CPP_STRING:
+ case CPP_WSTRING:
+ return STRING;
+
+ case CPP_OSTRING:
+ return OBJC_STRING;
+
+ /* These tokens are C++ specific (and will not be generated
+ in C mode, but let's be cautious). */
+ case CPP_SCOPE:
+ case CPP_DEREF_STAR:
+ case CPP_DOT_STAR:
+ case CPP_MIN_EQ:
+ case CPP_MAX_EQ:
+ case CPP_MIN:
+ case CPP_MAX:
+ /* These tokens should not survive translation phase 4. */
+ case CPP_HASH:
+ case CPP_PASTE:
+ error ("syntax error before '%s' token", NAME(last_token));
+ goto retry;
+
+ default:
+ abort ();
+ }
+
+ /* NOTREACHED */
+}
+
+static int
+yylex()
+{
+ int r;
+ timevar_push (TV_LEX);
+ r = _yylex();
+ timevar_pop (TV_LEX);
+ return r;
+}
+
+/* Sets the value of the 'yydebug' variable to VALUE.
+ This is a function so we don't have to have YYDEBUG defined
+ in order to build the compiler. */
+
+void
+set_yydebug (value)
+ int value;
+{
+#if YYDEBUG != 0
+ yydebug = value;
+#else
+ warning ("YYDEBUG not defined.");
+#endif
+}
+
+/* Function used when yydebug is set, to print a token in more detail. */
+
+static void
+yyprint (file, yychar, yyl)
+ FILE *file;
+ int yychar;
+ YYSTYPE yyl;
+{
+ tree t = yyl.ttype;
+
+ fprintf (file, " [%s]", NAME(last_token));
+
+ switch (yychar)
+ {
+ case IDENTIFIER:
+ case TYPENAME:
+ case OBJECTNAME:
+ case TYPESPEC:
+ case TYPE_QUAL:
+ case SCSPEC:
+ if (IDENTIFIER_POINTER (t))
+ fprintf (file, " `%s'", IDENTIFIER_POINTER (t));
+ break;
+
+ case CONSTANT:
+ fprintf (file, " %s", GET_MODE_NAME (TYPE_MODE (TREE_TYPE (t))));
+ if (TREE_CODE (t) == INTEGER_CST)
+ fprintf (file,
+#if HOST_BITS_PER_WIDE_INT == 64
+#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
+ " 0x%x%016x",
+#else
+#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
+ " 0x%lx%016lx",
+#else
+ " 0x%llx%016llx",
+#endif
+#endif
+#else
+#if HOST_BITS_PER_WIDE_INT != HOST_BITS_PER_INT
+ " 0x%lx%08lx",
+#else
+ " 0x%x%08x",
+#endif
+#endif
+ TREE_INT_CST_HIGH (t), TREE_INT_CST_LOW (t));
+ break;
+ }
+}
+\f
+/* This is not the ideal place to put these, but we have to get them out
+ of c-lex.c because cp/lex.c has its own versions. */
+
+/* Return something to represent absolute declarators containing a *.
+ TARGET is the absolute declarator that the * contains.
+ TYPE_QUALS is a list of modifiers such as const or volatile
+ to apply to the pointer type, represented as identifiers.
+
+ We return an INDIRECT_REF whose "contents" are TARGET
+ and whose type is the modifier list. */
+
+tree
+make_pointer_declarator (type_quals, target)
+ tree type_quals, target;
+{
+ return build1 (INDIRECT_REF, type_quals, target);
+}
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