X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=gcc%2Fc-tree.h;h=adace275c3838e1db8cc76a8cf82c49a91abe63a;hp=eb167ca050ea9070c17004d7c82b67b54cc96bb4;hb=f8cfcdd05b74f4abbbf3d6c35d5d5b8881ee7d0e;hpb=7746224a4b8634a5cd02d2ab5fe2ac7697425400 diff --git a/gcc/c-tree.h b/gcc/c-tree.h index eb167ca050e..adace275c38 100644 --- a/gcc/c-tree.h +++ b/gcc/c-tree.h @@ -1,6 +1,6 @@ /* Definitions for C parsing and type checking. Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998, - 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. + 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc. This file is part of GCC. @@ -23,44 +23,25 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #define GCC_C_TREE_H #include "c-common.h" +#include "diagnostic.h" -/* Each C symbol points to three linked lists of c_binding structures. - These describe the values of the identifier in the three different - namespaces defined by the language. The contents of these lists - are private to c-decl.c. */ +/* struct lang_identifier is private to c-decl.c, but langhooks.c needs to + know how big it is. This is sanity-checked in c-decl.c. */ +#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \ + (sizeof (struct c_common_identifier) + 3 * sizeof (void *)) -struct c_binding; - -/* Language-dependent contents of an identifier. */ - -struct lang_identifier GTY(()) -{ - struct c_common_identifier common_id; - struct c_binding *symbol_binding; /* vars, funcs, constants, typedefs */ - struct c_binding *tag_binding; /* struct/union/enum tags */ - struct c_binding *label_binding; /* labels */ -}; - -/* The resulting tree type. */ - -union lang_tree_node - GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"), - chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *)TYPE_NEXT_VARIANT (&%h.generic) : (union lang_tree_node *)TREE_CHAIN (&%h.generic)"))) -{ - union tree_node GTY ((tag ("0"), - desc ("tree_node_structure (&%h)"))) - generic; - struct lang_identifier GTY ((tag ("1"))) identifier; -}; +/* For gc purposes, return the most likely link for the longest chain. */ +#define C_LANG_TREE_NODE_CHAIN_NEXT(T) \ + ((union lang_tree_node *) \ + (TREE_CODE (T) == INTEGER_TYPE ? TYPE_NEXT_VARIANT (T) \ + : TREE_CODE (T) == COMPOUND_EXPR ? TREE_OPERAND (T, 1) \ + : TREE_CHAIN (T))) /* Language-specific declaration information. */ struct lang_decl GTY(()) { - /* The return types and parameter types may have variable size. - This is a list of any SAVE_EXPRs that need to be evaluated to - compute those sizes. */ - tree pending_sizes; + char dummy; }; /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */ @@ -82,10 +63,17 @@ struct lang_decl GTY(()) and C_RID_YYCODE is the token number wanted by Yacc. */ #define C_IS_RESERVED_WORD(ID) TREE_LANG_FLAG_0 (ID) -/* In a RECORD_TYPE, a sorted array of the fields of the type. */ struct lang_type GTY(()) { + /* In a RECORD_TYPE, a sorted array of the fields of the type. */ struct sorted_fields_type * GTY ((reorder ("resort_sorted_fields"))) s; + /* In an ENUMERAL_TYPE, the min and max values. */ + tree enum_min; + tree enum_max; + /* In a RECORD_TYPE, information specific to Objective-C, such + as a list of adopted protocols or a pointer to a corresponding + @interface. See objc/objc-act.h for details. */ + tree objc_info; }; /* Record whether a type or decl was written with nonconstant size. @@ -93,10 +81,6 @@ struct lang_type GTY(()) #define C_TYPE_VARIABLE_SIZE(TYPE) TYPE_LANG_FLAG_1 (TYPE) #define C_DECL_VARIABLE_SIZE(TYPE) DECL_LANG_FLAG_0 (TYPE) -/* Store a value in that field. */ -#define C_SET_EXP_ORIGINAL_CODE(EXP, CODE) \ - (TREE_COMPLEXITY (EXP) = (int) (CODE)) - /* Record whether a typedef for type `int' was actually `signed int'. */ #define C_TYPEDEF_EXPLICITLY_SIGNED(EXP) DECL_LANG_FLAG_1 (EXP) @@ -107,18 +91,20 @@ struct lang_type GTY(()) /* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */ #define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP) -/* For any decl, nonzero if it is bound in the externals scope and - pop_scope mustn't chain it into any higher block. */ -#define C_DECL_IN_EXTERNAL_SCOPE(EXP) DECL_LANG_FLAG_3 (EXP) - /* For FUNCTION_DECLs, evaluates true if the decl is built-in but has been declared. */ -#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_4 (EXP) +#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_3 (EXP) /* Record whether a decl was declared register. This is strictly a front-end flag, whereas DECL_REGISTER is used for code generation; they may differ for structures with volatile fields. */ -#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_5 (EXP) +#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_4 (EXP) + +/* Record whether a decl was used in an expression anywhere except an + unevaluated operand of sizeof / typeof / alignof. This is only + used for functions declared static but not defined, though outside + sizeof and typeof it is set for other function decls as well. */ +#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (EXP) /* Nonzero for a decl which either doesn't exist or isn't a prototype. N.B. Could be simplified if all built-in decls had complete prototypes @@ -131,7 +117,220 @@ struct lang_type GTY(()) /* For FUNCTION_TYPE, a hidden list of types of arguments. The same as TYPE_ARG_TYPES for functions with prototypes, but created for functions without prototypes. */ -#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE) +#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_LANG_SLOT_1 (NODE) + +/* Record parser information about an expression that is irrelevant + for code generation alongside a tree representing its value. */ +struct c_expr +{ + /* The value of the expression. */ + tree value; + /* Record the original binary operator of an expression, which may + have been changed by fold, STRING_CST for unparenthesized string + constants, or ERROR_MARK for other expressions (including + parenthesized expressions). */ + enum tree_code original_code; +}; + +/* A kind of type specifier. Note that this information is currently + only used to distinguish tag definitions, tag references and typeof + uses. */ +enum c_typespec_kind { + /* A reserved keyword type specifier. */ + ctsk_resword, + /* A reference to a tag, previously declared, such as "struct foo". + This includes where the previous declaration was as a different + kind of tag, in which case this is only valid if shadowing that + tag in an inner scope. */ + ctsk_tagref, + /* A reference to a tag, not previously declared in a visible + scope. */ + ctsk_tagfirstref, + /* A definition of a tag such as "struct foo { int a; }". */ + ctsk_tagdef, + /* A typedef name. */ + ctsk_typedef, + /* An ObjC-specific kind of type specifier. */ + ctsk_objc, + /* A typeof specifier. */ + ctsk_typeof +}; + +/* A type specifier: this structure is created in the parser and + passed to declspecs_add_type only. */ +struct c_typespec { + /* What kind of type specifier this is. */ + enum c_typespec_kind kind; + /* The specifier itself. */ + tree spec; +}; + +/* A storage class specifier. */ +enum c_storage_class { + csc_none, + csc_auto, + csc_extern, + csc_register, + csc_static, + csc_typedef +}; + +/* A type specifier keyword "void", "_Bool", "char", "int", "float", + "double", or none of these. */ +enum c_typespec_keyword { + cts_none, + cts_void, + cts_bool, + cts_char, + cts_int, + cts_float, + cts_double +}; + +/* A sequence of declaration specifiers in C. */ +struct c_declspecs { + /* The type specified, if a single type specifier such as a struct, + union or enum specifier, typedef name or typeof specifies the + whole type, or NULL_TREE if none or a keyword such as "void" or + "char" is used. Does not include qualifiers. */ + tree type; + /* The attributes from a typedef decl. */ + tree decl_attr; + /* When parsing, the attributes. Outside the parser, this will be + NULL; attributes (possibly from multiple lists) will be passed + separately. */ + tree attrs; + /* Any type specifier keyword used such as "int", not reflecting + modifiers such as "short", or cts_none if none. */ + enum c_typespec_keyword typespec_word; + /* The storage class specifier, or csc_none if none. */ + enum c_storage_class storage_class; + /* Whether any declaration specifiers have been seen at all. */ + BOOL_BITFIELD declspecs_seen_p : 1; + /* Whether a type specifier has been seen. */ + BOOL_BITFIELD type_seen_p : 1; + /* Whether something other than a storage class specifier or + attribute has been seen. This is used to warn for the + obsolescent usage of storage class specifiers other than at the + start of the list. (Doing this properly would require function + specifiers to be handled separately from storage class + specifiers.) */ + BOOL_BITFIELD non_sc_seen_p : 1; + /* Whether the type is specified by a typedef or typeof name. */ + BOOL_BITFIELD typedef_p : 1; + /* Whether a struct, union or enum type either had its content + defined by a type specifier in the list or was the first visible + declaration of its tag. */ + BOOL_BITFIELD tag_defined_p : 1; + /* Whether the type is explicitly "signed" or specified by a typedef + whose type is explicitly "signed". */ + BOOL_BITFIELD explicit_signed_p : 1; + /* Whether the specifiers include a deprecated typedef. */ + BOOL_BITFIELD deprecated_p : 1; + /* Whether the type defaulted to "int" because there were no type + specifiers. */ + BOOL_BITFIELD default_int_p; + /* Whether "long" was specified. */ + BOOL_BITFIELD long_p : 1; + /* Whether "long" was specified more than once. */ + BOOL_BITFIELD long_long_p : 1; + /* Whether "short" was specified. */ + BOOL_BITFIELD short_p : 1; + /* Whether "signed" was specified. */ + BOOL_BITFIELD signed_p : 1; + /* Whether "unsigned" was specified. */ + BOOL_BITFIELD unsigned_p : 1; + /* Whether "complex" was specified. */ + BOOL_BITFIELD complex_p : 1; + /* Whether "inline" was specified. */ + BOOL_BITFIELD inline_p : 1; + /* Whether "__thread" was specified. */ + BOOL_BITFIELD thread_p : 1; + /* Whether "const" was specified. */ + BOOL_BITFIELD const_p : 1; + /* Whether "volatile" was specified. */ + BOOL_BITFIELD volatile_p : 1; + /* Whether "restrict" was specified. */ + BOOL_BITFIELD restrict_p : 1; +}; + +/* The various kinds of declarators in C. */ +enum c_declarator_kind { + /* An identifier. */ + cdk_id, + /* A function. */ + cdk_function, + /* An array. */ + cdk_array, + /* A pointer. */ + cdk_pointer, + /* Parenthesized declarator with nested attributes. */ + cdk_attrs +}; + +/* Information about the parameters in a function declarator. */ +struct c_arg_info { + /* A list of parameter decls. */ + tree parms; + /* A list of structure, union and enum tags defined. */ + tree tags; + /* A list of argument types to go in the FUNCTION_TYPE. */ + tree types; + /* A list of non-parameter decls (notably enumeration constants) + defined with the parameters. */ + tree others; +}; + +/* A declarator. */ +struct c_declarator { + /* The kind of declarator. */ + enum c_declarator_kind kind; + /* Except for cdk_id, the contained declarator. For cdk_id, NULL. */ + struct c_declarator *declarator; + location_t id_loc; /* Currently only set for cdk_id. */ + union { + /* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract + declarator. */ + tree id; + /* For functions. */ + struct c_arg_info *arg_info; + /* For arrays. */ + struct { + /* The array dimension, or NULL for [] and [*]. */ + tree dimen; + /* The qualifiers inside []. */ + int quals; + /* The attributes (currently ignored) inside []. */ + tree attrs; + /* Whether [static] was used. */ + BOOL_BITFIELD static_p : 1; + /* Whether [*] was used. */ + BOOL_BITFIELD vla_unspec_p : 1; + } array; + /* For pointers, the qualifiers on the pointer type. */ + int pointer_quals; + /* For attributes. */ + tree attrs; + } u; +}; + +/* A type name. */ +struct c_type_name { + /* The declaration specifiers. */ + struct c_declspecs *specs; + /* The declarator. */ + struct c_declarator *declarator; +}; + +/* A parameter. */ +struct c_parm { + /* The declaration specifiers, minus any prefix attributes. */ + struct c_declspecs *specs; + /* The attributes. */ + tree attrs; + /* The declarator. */ + struct c_declarator *declarator; +}; /* Save and restore the variables in this file and elsewhere that keep track of the progress of compilation of the current function. @@ -140,28 +339,30 @@ struct lang_type GTY(()) struct language_function GTY(()) { struct c_language_function base; + tree x_break_label; + tree x_cont_label; + struct c_switch * GTY((skip)) x_switch_stack; + struct c_arg_info * GTY((skip)) arg_info; int returns_value; int returns_null; int returns_abnormally; int warn_about_return_type; int extern_inline; - int x_in_iteration_stmt; - int x_in_case_stmt; }; -/* in c-parse.in */ +/* in c-parser.c */ extern void c_parse_init (void); /* in c-aux-info.c */ extern void gen_aux_info_record (tree, int, int, int); /* in c-decl.c */ -extern int c_in_iteration_stmt; -extern int c_in_case_stmt; +extern struct obstack parser_obstack; +extern tree c_break_label; +extern tree c_cont_label; extern int global_bindings_p (void); -extern tree getdecls (void); extern void push_scope (void); extern tree pop_scope (void); extern void insert_block (tree); @@ -171,107 +372,140 @@ extern void c_expand_body (tree); extern void c_init_decl_processing (void); extern void c_dup_lang_specific_decl (tree); extern void c_print_identifier (FILE *, tree, int); -extern tree build_array_declarator (tree, tree, int, int); +extern int quals_from_declspecs (const struct c_declspecs *); +extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *, + bool, bool); extern tree build_enumerator (tree, tree); extern void check_for_loop_decls (void); extern void mark_forward_parm_decls (void); extern int complete_array_type (tree, tree, int); extern void declare_parm_level (void); -extern void undeclared_variable (tree); +extern void undeclared_variable (tree, location_t); extern tree declare_label (tree); extern tree define_label (location_t, tree); extern void finish_decl (tree, tree, tree); extern tree finish_enum (tree, tree, tree); extern void finish_function (void); extern tree finish_struct (tree, tree, tree); -extern tree get_parm_info (bool); -extern tree grokfield (tree, tree, tree); -extern tree groktypename (tree); -extern tree groktypename_in_parm_context (tree); +extern struct c_arg_info *get_parm_info (bool); +extern tree grokfield (struct c_declarator *, struct c_declspecs *, tree); +extern tree groktypename (struct c_type_name *); +extern tree grokparm (const struct c_parm *); extern tree implicitly_declare (tree); extern void keep_next_level (void); extern tree lookup_name (tree); extern void pending_xref_error (void); extern void c_push_function_context (struct function *); extern void c_pop_function_context (struct function *); -extern void push_parm_decl (tree); +extern void push_parm_decl (const struct c_parm *); extern tree pushdecl_top_level (tree); -extern tree set_array_declarator_type (tree, tree, int); -extern void shadow_tag (tree); -extern void shadow_tag_warned (tree, int); +extern struct c_declarator *set_array_declarator_inner (struct c_declarator *, + struct c_declarator *, + bool); +extern tree builtin_function (const char *, tree, int, enum built_in_class, + const char *, tree); +extern void shadow_tag (const struct c_declspecs *); +extern void shadow_tag_warned (const struct c_declspecs *, int); extern tree start_enum (tree); -extern int start_function (tree, tree, tree); -extern tree start_decl (tree, tree, int, tree); +extern int start_function (struct c_declspecs *, struct c_declarator *, tree); +extern tree start_decl (struct c_declarator *, struct c_declspecs *, bool, + tree); extern tree start_struct (enum tree_code, tree); extern void store_parm_decls (void); +extern void store_parm_decls_from (struct c_arg_info *); extern tree xref_tag (enum tree_code, tree); -extern tree c_begin_compound_stmt (void); -extern void c_expand_decl_stmt (tree); -extern void c_static_assembler_name (tree); -extern tree make_pointer_declarator (tree, tree); +extern struct c_typespec parser_xref_tag (enum tree_code, tree); +extern int c_expand_decl (tree); +extern struct c_parm *build_c_parm (struct c_declspecs *, tree, + struct c_declarator *); +extern struct c_declarator *build_attrs_declarator (tree, + struct c_declarator *); +extern struct c_declarator *build_function_declarator (struct c_arg_info *, + struct c_declarator *); +extern struct c_declarator *build_id_declarator (tree); +extern struct c_declarator *make_pointer_declarator (struct c_declspecs *, + struct c_declarator *); +extern struct c_declspecs *build_null_declspecs (void); +extern struct c_declspecs *declspecs_add_qual (struct c_declspecs *, tree); +extern struct c_declspecs *declspecs_add_type (struct c_declspecs *, + struct c_typespec); +extern struct c_declspecs *declspecs_add_scspec (struct c_declspecs *, tree); +extern struct c_declspecs *declspecs_add_attrs (struct c_declspecs *, tree); +extern struct c_declspecs *finish_declspecs (struct c_declspecs *); /* in c-objc-common.c */ extern int c_disregard_inline_limits (tree); extern int c_cannot_inline_tree_fn (tree *); extern bool c_objc_common_init (void); +extern bool c_missing_noreturn_ok_p (tree); extern tree c_objc_common_truthvalue_conversion (tree expr); -extern int c_missing_noreturn_ok_p (tree); -extern void c_objc_common_finish_file (void); -extern int defer_fn (tree); extern bool c_warn_unused_global_decl (tree); +extern void c_initialize_diagnostics (diagnostic_context *); #define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \ c_build_qualified_type ((TYPE), \ ((CONST_P) ? TYPE_QUAL_CONST : 0) | \ ((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0)) -#define c_sizeof_nowarn(T) c_sizeof_or_alignof_type (T, SIZEOF_EXPR, 0) - /* in c-typeck.c */ +extern int in_alignof; +extern int in_sizeof; +extern int in_typeof; -/* For use with comptypes. */ -enum { - COMPARE_STRICT = 0 -}; +extern struct c_switch *c_switch_stack; extern tree require_complete_type (tree); extern int same_translation_unit_p (tree, tree); -extern int comptypes (tree, tree, int); -extern tree c_size_in_bytes (tree); +extern int comptypes (tree, tree); extern bool c_mark_addressable (tree); extern void c_incomplete_type_error (tree, tree); extern tree c_type_promotes_to (tree); +extern tree composite_type (tree, tree); extern tree build_component_ref (tree, tree); extern tree build_indirect_ref (tree, const char *); extern tree build_array_ref (tree, tree); -extern tree build_external_ref (tree, int); -extern tree parser_build_binary_op (enum tree_code, tree, tree); -extern int c_tree_expr_nonnegative_p (tree); -extern void readonly_error (tree, const char *); +extern tree build_external_ref (tree, int, location_t); +extern void pop_maybe_used (bool); +extern struct c_expr c_expr_sizeof_expr (struct c_expr); +extern struct c_expr c_expr_sizeof_type (struct c_type_name *); +extern struct c_expr parser_build_binary_op (enum tree_code, struct c_expr, + struct c_expr); extern tree build_conditional_expr (tree, tree, tree); -extern tree build_compound_expr (tree); -extern tree c_cast_expr (tree, tree); +extern tree build_compound_expr (tree, tree); +extern tree c_cast_expr (struct c_type_name *, tree); extern tree build_c_cast (tree, tree); extern tree build_modify_expr (tree, enum tree_code, tree); extern void store_init_value (tree, tree); extern void error_init (const char *); extern void pedwarn_init (const char *); +extern void maybe_warn_string_init (tree, struct c_expr); extern void start_init (tree, tree, int); extern void finish_init (void); extern void really_start_incremental_init (tree); extern void push_init_level (int); -extern tree pop_init_level (int); +extern struct c_expr pop_init_level (int); extern void set_init_index (tree, tree); extern void set_init_label (tree); -extern void process_init_element (tree); +extern void process_init_element (struct c_expr); extern tree build_compound_literal (tree, tree); -extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_PRINTF_1; -extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_PRINTF_1; extern tree c_start_case (tree); -extern void c_finish_case (void); +extern void c_finish_case (tree); extern tree build_asm_expr (tree, tree, tree, tree, bool); extern tree build_asm_stmt (tree, tree); extern tree c_convert_parm_for_inlining (tree, tree, tree, int); +extern int c_types_compatible_p (tree, tree); +extern tree c_begin_compound_stmt (bool); +extern tree c_end_compound_stmt (tree, bool); +extern void c_finish_if_stmt (location_t, tree, tree, tree, bool); +extern void c_finish_loop (location_t, tree, tree, tree, tree, tree, bool); +extern tree c_begin_stmt_expr (void); +extern tree c_finish_stmt_expr (tree); +extern tree c_process_expr_stmt (tree); +extern tree c_finish_expr_stmt (tree); +extern tree c_finish_return (tree); +extern tree c_finish_bc_stmt (tree *, bool); +extern tree c_finish_goto_label (tree); +extern tree c_finish_goto_ptr (tree); /* Set to 0 at beginning of a function definition, set to 1 if a return statement that specifies a return value is seen. */ @@ -297,18 +531,24 @@ extern int system_header_p; extern bool c_override_global_bindings_to_false; +/* True means we've initialized exception handling. */ +extern bool c_eh_initialized_p; + /* In c-decl.c */ extern void c_finish_incomplete_decl (tree); -extern void *get_current_scope (void); -extern void objc_mark_locals_volatile (void *); extern void c_write_global_declarations (void); -extern GTY(()) tree static_ctors; -extern GTY(()) tree static_dtors; - /* In order for the format checking to accept the C frontend diagnostic framework extensions, you must include this file before toplev.h, not after. */ #define GCC_DIAG_STYLE __gcc_cdiag__ +#if GCC_VERSION >= 3005 +#define ATTRIBUTE_GCC_CDIAG(m, n) __attribute__ ((__format__ (GCC_DIAG_STYLE, m ,n))) ATTRIBUTE_NONNULL(m) +#else +#define ATTRIBUTE_GCC_CDIAG(m, n) ATTRIBUTE_NONNULL(m) +#endif + +extern void pedwarn_c90 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2); +extern void pedwarn_c99 (const char *, ...) ATTRIBUTE_GCC_CDIAG(1,2); #endif /* ! GCC_C_TREE_H */