X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fc-tree.h;h=7af8130a42692a8732a5548a3c92266c9a2bc37d;hb=22959f21469251805152ccdd36e5e0c1c5087b0a;hp=f6e195fa101c673e4ef55a2070cbf263234145d0;hpb=056a8ee62feab192510d52553345a99f7f652e7c;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/c-tree.h b/gcc/c-tree.h index f6e195fa101..7af8130a426 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. @@ -30,21 +30,11 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA #define C_SIZEOF_STRUCT_LANG_IDENTIFIER \ (sizeof (struct c_common_identifier) + 3 * sizeof (void *)) -/* 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. */ @@ -73,6 +63,10 @@ struct lang_type GTY(()) /* 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. @@ -92,7 +86,13 @@ struct lang_type GTY(()) /* For FUNCTION_DECLs, evaluates true if the decl is built-in but has been declared. */ -#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_3 (EXP) +#define C_DECL_DECLARED_BUILTIN(EXP) \ + DECL_LANG_FLAG_3 (FUNCTION_DECL_CHECK (EXP)) + +/* For FUNCTION_DECLs, evaluates true if the decl is built-in, has a + built-in prototype and does not have a non-built-in prototype. */ +#define C_DECL_BUILTIN_PROTOTYPE(EXP) \ + DECL_LANG_FLAG_6 (FUNCTION_DECL_CHECK (EXP)) /* Record whether a decl was declared register. This is strictly a front-end flag, whereas DECL_REGISTER is used for code generation; @@ -103,7 +103,30 @@ struct lang_type GTY(()) 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) +#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (FUNCTION_DECL_CHECK (EXP)) + +/* Record whether a label was defined in a statement expression which + has finished and so can no longer be jumped to. */ +#define C_DECL_UNJUMPABLE_STMT_EXPR(EXP) \ + DECL_LANG_FLAG_6 (LABEL_DECL_CHECK (EXP)) + +/* Record whether a label was the subject of a goto from outside the + current level of statement expression nesting and so cannot be + defined right now. */ +#define C_DECL_UNDEFINABLE_STMT_EXPR(EXP) \ + DECL_LANG_FLAG_7 (LABEL_DECL_CHECK (EXP)) + +/* Record whether a label was defined in the scope of an identifier + with variably modified type which has finished and so can no longer + be jumped to. */ +#define C_DECL_UNJUMPABLE_VM(EXP) \ + DECL_LANG_FLAG_3 (LABEL_DECL_CHECK (EXP)) + +/* Record whether a label was the subject of a goto from outside the + current level of scopes of identifiers with variably modified type + and so cannot be defined right now. */ +#define C_DECL_UNDEFINABLE_VM(EXP) \ + DECL_LANG_FLAG_5 (LABEL_DECL_CHECK (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 @@ -125,12 +148,45 @@ 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 unparenthesised string + 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, @@ -171,6 +227,10 @@ struct c_declspecs { 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 @@ -178,8 +238,12 @@ struct c_declspecs { specifiers to be handled separately from storage class specifiers.) */ BOOL_BITFIELD non_sc_seen_p : 1; - /* Whether the type is specified by a typedef. */ + /* 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; @@ -245,6 +309,7 @@ struct c_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. */ @@ -307,8 +372,47 @@ struct language_function GTY(()) int extern_inline; }; +/* Save lists of labels used or defined in particular contexts. + Allocated on the parser obstack. */ + +struct c_label_list +{ + /* The label at the head of the list. */ + tree label; + /* The rest of the list. */ + struct c_label_list *next; +}; + +/* Statement expression context. */ + +struct c_label_context_se +{ + /* The labels defined at this level of nesting. */ + struct c_label_list *labels_def; + /* The labels used at this level of nesting. */ + struct c_label_list *labels_used; + /* The next outermost context. */ + struct c_label_context_se *next; +}; + +/* Context of variably modified declarations. */ + +struct c_label_context_vm +{ + /* The labels defined at this level of nesting. */ + struct c_label_list *labels_def; + /* The labels used at this level of nesting. */ + struct c_label_list *labels_used; + /* The scope of this context. Multiple contexts may be at the same + numbered scope, since each variably modified declaration starts a + new context. */ + unsigned scope; + /* The next outermost context. */ + struct c_label_context_vm *next; +}; + -/* in c-parse.in */ +/* in c-parser.c */ extern void c_parse_init (void); /* in c-aux-info.c */ @@ -335,9 +439,8 @@ extern struct c_declarator *build_array_declarator (tree, struct c_declspecs *, 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); @@ -371,6 +474,7 @@ 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 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 *); @@ -383,7 +487,8 @@ 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 *, 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 *); @@ -394,7 +499,6 @@ 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 defer_fn (tree); extern bool c_warn_unused_global_decl (tree); extern void c_initialize_diagnostics (diagnostic_context *); @@ -409,23 +513,25 @@ extern int in_sizeof; extern int in_typeof; extern struct c_switch *c_switch_stack; +extern struct c_label_context_se *label_context_stack_se; +extern struct c_label_context_vm *label_context_stack_vm; extern tree require_complete_type (tree); extern int same_translation_unit_p (tree, tree); extern int comptypes (tree, tree); -extern tree c_size_in_bytes (tree); extern bool c_mark_addressable (tree); extern void c_incomplete_type_error (tree, tree); extern tree c_type_promotes_to (tree); +extern tree default_conversion (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 void record_maybe_used_decl (tree); +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_unary_op (enum tree_code, struct c_expr); 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); @@ -464,6 +570,8 @@ 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); +extern void c_begin_vm_scope (unsigned int); +extern void c_end_vm_scope (unsigned int); /* Set to 0 at beginning of a function definition, set to 1 if a return statement that specifies a return value is seen. */