665f250366
* c-parse.in (RESTORE_WARN_FLAGS): Use tree_low_cst.
* c-parse.y, c-parse.c, objc/objc-parse.y, objc/objc-parse.c:
Regenerated.
* c-tree.h (min_precision): Move declaration to here.
* c-typeck.c (build_binary_op): Use host_integerp and tree_low_cst.
(build_unary_op, add_pending_init): Use bit_position.
(pending_init_member, process_init_element): Likewise.
(really_start_incremental_init, push_init_level, pop_init_level):
Don't make copies of nodes or modify them in place, use consistent
types when tracking positions, and use tree routines computations.
(set_init_index, output_init_element): Likewise.
(output_pending_init_elements, process_init_element): Likewise.
* dbxout.c (dbxout_type_fields): Use bit_position, host_integerp,
tree_low_cst and int_bit_position; also minor cleanup.
(dbxout_type_method_1, dbxout_range_type, dbxout_type): Likewise.
(print_cst_octal): Precision is unsigned.
(dbxout_symbol): Ensure DECL_INITIAL is in-range and use tree_low_cst.
* dwarf2out.c (ceiling): Input and output are unsigned HOST_WIDE_INT.
(simple_type_align_in_bits): Result is unsigned int.
Use tree_int_low_cst and host_integerp.
(simple_type_size_in_bits): Result is unsigned HOST_WIDE_INT.
(field_byte_offset): Result is HOST_WIDE_INT.
Change types of internal variables so alignments are unsigned int,
offsets are HOST_WIDE_INT and sizes are unsigned HOST_WIDE_INT.
Use host_integerp, tree_low_cst, and int_bit_position.
(add_bit_offset_attribute): Likewise.
(add_data_member_location_attribute): Use tree_cst_low.
(add_bound_info): Use host_integerp, integer_zerop, and integer_onep.
(add_bit_size_attribute): Use tree_low_cst.
(add_pure_or_virtual_attribute, gen_enumeration_type_die): Likewise.
* dwarfout.c: Similar changes to dwarf2out.c.
* expr.c (expand_expr, case ARRAY_REF): Remove redundant code.
* genoutput.c (n_occurences): Return -1 for null string.
(strip_whitespace): Accept null string and make into function.
(scan_operands): Reflect above changes.
* sdbout.c (plain_type_1): Use host_integerp and tree_low_cst.
(sdbout_field_types, sdbout_one_type): Likewise; also use bit_position.
* ssa.c (rename_registers): Add missing cast of arg to bzero.
* tree.c (int_size_in_bytes): Check for too big to represent.
(bit_position, int_bit_position, host_integerp, tree_low_cst): New fns.
* tree.h (host_integerp, tree_low_cst, bit_position, int_bit_position):
New declarations.
(min_precision): Delete from here.
* varasm.c (decode_addr_const): Use host_integerp, bit_position,
and int_bit_position.
* objc/objc-act.c (encode_method_prototype): Sizes are HOST_WIDE_INT.
(encode_method_def): Likewise.
(build_ivar_list_initializer): Use int_bit_position.
(generate_shared_structures): Convert size.
(encode_type, encode_complete_bitfield): Use integer_zerop.
(encode_bitfield): Use tree_low_cst and int_bit_position.
* ch/typeck.c (min_precision): New function.
(build_chill_slice): Use host_integerp and tree_low_cst.
(expand_constant_to_buffer): Likewise and also int_bit_position.
LO is unsigned HOST_WIDE_INT
(build_chill_array_ref_1): Make `i' be HOST_WIDE_INT; use tree_low_cst.
(extract_constant_from_buffer): Sizes are now HOST_WIDE_INT.
Use host_integerp and tree_low_cst.
(build_chill_bin_type): Use host_integerp and tree_low_cst.
(layout_chill_range_type): Use tree_int_cst_sgn, compare_tree_int,
tree_low_cst, and min_precision.
(apply_chill_array_layout): Cleanups for types of variables
and use tree_int_cst_sgn, compare_tree_int, and tree_low_cst.
(apply_chill_field_layout): Likewise.
* cp/class.c (build_vbase_path): Use integer_zerop.
(build_vtable_entry): Use tree_low_cst.
(get_vfield_offset): Use bit_position.
(dfs_modify_vtables): New variable vindex_val; `i' is HOST_WIDE_INT.
Use tree_low_cst.
(check_bitfield_decl): Set DECL_SIZE using convert.
(build_base_field): Set DECL_SIZE and DECL_SIZE_UNIT using size_binop.
(layout_virtual_bases): DSIZE is unsigned HOST_WIDE_INT.
Use tree_low_cst.
(finish_struct_1): Use bit_position.
(dump_class_hierarchy): Use tree_low_cst.
* cp/cp-tree.h (min_precision): Add declaration.
* cp/decl.c (xref_tag, xref_basetypes): Use tree_low_cst.
* cp/error.c (dump_type_suffix): Use host_integerp and tree_low_cst.
(dump_expr): Use integer_zerop, host_integerp, and tree_low_cst.
* cp/expr.c (cplus_expand_constant): Use bit_position.
* cp/init.c (build_vec_init): Use host_integerp and tree_low_cst.
* cp/rtti.c (get_base_offset): Use bit_position.
* cp/typeck.c (build_binary_op): Use integer_zerop, compare_tree_int,
host_integerp, and tree_low_cst.
(pointer_int_sum): Use integer_zerop.
(build_component_addr): Use bit_position.
* java/class.c (make_field_value): Properly handle sizes.
(get_dispatch_vector): Use tree_low_cst and host_integerp.
(layout_class_method): Count using trees.
* java/decl.c (push_promoted_type): Set TYPE_{MIN,MAX}_VALUE with
copy_node.
* java/expr.c (java_array_data_offset): Use int_bit_position.
(build_newarray, build_anewarray): Use host_integerp and tree_low_cst.
(build_invokevirtual): Use tree_low_cst and do computations with trees.
From-SVN: r32607
454 lines
18 KiB
C
454 lines
18 KiB
C
/* Definitions for C parsing and type checking.
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Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
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1999, 2000 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _C_TREE_H
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#define _C_TREE_H
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#include "c-common.h"
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/* Language-dependent contents of an identifier. */
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/* The limbo_value is used for block level extern declarations, which need
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to be type checked against subsequent extern declarations. They can't
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be referenced after they fall out of scope, so they can't be global. */
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struct lang_identifier
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{
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struct tree_identifier ignore;
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tree global_value, local_value, label_value, implicit_decl;
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tree error_locus, limbo_value;
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};
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/* Macros for access to language-specific slots in an identifier. */
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/* Each of these slots contains a DECL node or null. */
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/* This represents the value which the identifier has in the
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file-scope namespace. */
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#define IDENTIFIER_GLOBAL_VALUE(NODE) \
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(((struct lang_identifier *) (NODE))->global_value)
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/* This represents the value which the identifier has in the current
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scope. */
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#define IDENTIFIER_LOCAL_VALUE(NODE) \
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(((struct lang_identifier *) (NODE))->local_value)
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/* This represents the value which the identifier has as a label in
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the current label scope. */
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#define IDENTIFIER_LABEL_VALUE(NODE) \
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(((struct lang_identifier *) (NODE))->label_value)
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/* This records the extern decl of this identifier, if it has had one
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at any point in this compilation. */
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#define IDENTIFIER_LIMBO_VALUE(NODE) \
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(((struct lang_identifier *) (NODE))->limbo_value)
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/* This records the implicit function decl of this identifier, if it
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has had one at any point in this compilation. */
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#define IDENTIFIER_IMPLICIT_DECL(NODE) \
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(((struct lang_identifier *) (NODE))->implicit_decl)
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/* This is the last function in which we printed an "undefined variable"
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message for this identifier. Value is a FUNCTION_DECL or null. */
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#define IDENTIFIER_ERROR_LOCUS(NODE) \
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(((struct lang_identifier *) (NODE))->error_locus)
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/* In identifiers, C uses the following fields in a special way:
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TREE_PUBLIC to record that there was a previous local extern decl.
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TREE_USED to record that such a decl was used.
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TREE_ADDRESSABLE to record that the address of such a decl was used. */
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/* Nonzero means reject anything that ANSI standard C forbids. */
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extern int pedantic;
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/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
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#define C_TYPE_FIELDS_READONLY(type) TREE_LANG_FLAG_1 (type)
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/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is volatile. */
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#define C_TYPE_FIELDS_VOLATILE(type) TREE_LANG_FLAG_2 (type)
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/* In a RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE
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nonzero if the definition of the type has already started. */
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#define C_TYPE_BEING_DEFINED(type) TYPE_LANG_FLAG_0 (type)
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/* C types are partitioned into three subsets: object, function, and
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incomplete types. */
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#define C_TYPE_OBJECT_P(type) \
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(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
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#define C_TYPE_FUNCTION_P(type) \
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(TREE_CODE (type) == FUNCTION_TYPE)
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#define C_TYPE_INCOMPLETE_P(type) \
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(TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
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/* For convenience we define a single macro to identify the class of
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object or incomplete types. */
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#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
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(!C_TYPE_FUNCTION_P (type))
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/* In a RECORD_TYPE, a sorted array of the fields of the type. */
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struct lang_type
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{
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int len;
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tree elts[1];
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};
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/* Mark which labels are explicitly declared.
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These may be shadowed, and may be referenced from nested functions. */
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#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
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/* Record whether a type or decl was written with nonconstant size.
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Note that TYPE_SIZE may have simplified to a constant. */
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#define C_TYPE_VARIABLE_SIZE(type) TYPE_LANG_FLAG_1 (type)
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#define C_DECL_VARIABLE_SIZE(type) DECL_LANG_FLAG_0 (type)
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/* Record in each node resulting from a binary operator
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what operator was specified for it. */
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#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
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#if 0 /* Not used. */
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/* Record whether a decl for a function or function pointer has
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already been mentioned (in a warning) because it was called
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but didn't have a prototype. */
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#define C_MISSING_PROTOTYPE_WARNED(decl) DECL_LANG_FLAG_2(decl)
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#endif
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/* Store a value in that field. */
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#define C_SET_EXP_ORIGINAL_CODE(exp, code) \
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(TREE_COMPLEXITY (exp) = (int) (code))
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/* Record whether a typedef for type `int' was actually `signed int'. */
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#define C_TYPEDEF_EXPLICITLY_SIGNED(exp) DECL_LANG_FLAG_1 ((exp))
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/* Nonzero for a declaration of a built in function if there has been no
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occasion that would declare the function in ordinary C.
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Using the function draws a pedantic warning in this case. */
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#define C_DECL_ANTICIPATED(exp) DECL_LANG_FLAG_3 ((exp))
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/* For FUNCTION_TYPE, a hidden list of types of arguments. The same as
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TYPE_ARG_TYPES for functions with prototypes, but created for functions
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without prototypes. */
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#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_NONCOPIED_PARTS (NODE)
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/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
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#define DECL_C_BIT_FIELD(NODE) DECL_LANG_FLAG_4 (NODE)
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/* In a VAR_DECL, means the variable is really an iterator. */
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#define ITERATOR_P(D) (DECL_LANG_FLAG_4(D))
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/* In a VAR_DECL for an iterator, means we are within
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an explicit loop over that iterator. */
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#define ITERATOR_BOUND_P(NODE) ((NODE)->common.readonly_flag)
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/* in c-lang.c and objc-act.c */
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extern tree lookup_interface PARAMS ((tree));
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extern tree is_class_name PARAMS ((tree));
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extern void maybe_objc_check_decl PARAMS ((tree));
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extern void finish_file PARAMS ((void));
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extern int maybe_objc_comptypes PARAMS ((tree, tree, int));
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extern tree maybe_building_objc_message_expr PARAMS ((void));
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extern tree maybe_objc_method_name PARAMS ((tree));
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extern int recognize_objc_keyword PARAMS ((void));
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extern tree build_objc_string PARAMS ((int, const char *));
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/* in c-parse.in */
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extern void c_parse_init PARAMS ((void));
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/* in c-aux-info.c */
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extern void gen_aux_info_record PARAMS ((tree, int, int, int));
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/* In c-common.c */
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extern unsigned int min_precision PARAMS ((tree, int));
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/* in c-convert.c */
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extern tree convert PARAMS ((tree, tree));
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/* in c-decl.c */
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extern tree build_enumerator PARAMS ((tree, tree));
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/* Add qualifiers to a type, in the fashion for C. */
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extern tree c_build_qualified_type PARAMS ((tree, int));
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#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
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c_build_qualified_type (TYPE, \
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((CONST_P) ? TYPE_QUAL_CONST : 0) | \
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((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
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extern int c_decode_option PARAMS ((int, char **));
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extern void c_mark_varargs PARAMS ((void));
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extern tree check_identifier PARAMS ((tree, tree));
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extern void clear_parm_order PARAMS ((void));
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extern tree combine_parm_decls PARAMS ((tree, tree, int));
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extern int complete_array_type PARAMS ((tree, tree, int));
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extern void declare_parm_level PARAMS ((int));
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extern tree define_label PARAMS ((char *, int, tree));
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extern void delete_block PARAMS ((tree));
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extern void finish_decl PARAMS ((tree, tree, tree));
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extern void finish_decl_top_level PARAMS ((tree, tree, tree));
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extern tree finish_enum PARAMS ((tree, tree, tree));
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extern void finish_function PARAMS ((int));
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extern tree finish_struct PARAMS ((tree, tree, tree));
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extern tree get_parm_info PARAMS ((int));
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extern tree getdecls PARAMS ((void));
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extern tree gettags PARAMS ((void));
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extern int global_bindings_p PARAMS ((void));
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extern tree grokfield PARAMS ((const char *, int, tree, tree, tree));
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extern tree groktypename PARAMS ((tree));
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extern tree groktypename_in_parm_context PARAMS ((tree));
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extern tree implicitly_declare PARAMS ((tree));
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extern int in_parm_level_p PARAMS ((void));
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extern void init_decl_processing PARAMS ((void));
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extern void insert_block PARAMS ((tree));
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extern void keep_next_level PARAMS ((void));
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extern int kept_level_p PARAMS ((void));
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extern tree lookup_label PARAMS ((tree));
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extern tree lookup_name PARAMS ((tree));
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extern tree lookup_name_current_level PARAMS ((tree));
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extern tree lookup_name_current_level_global PARAMS ((tree));
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extern tree maybe_build_cleanup PARAMS ((tree));
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extern void parmlist_tags_warning PARAMS ((void));
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extern void pending_xref_error PARAMS ((void));
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extern void mark_c_function_context PARAMS ((struct function *));
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extern void push_c_function_context PARAMS ((struct function *));
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extern void pop_c_function_context PARAMS ((struct function *));
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extern void pop_label_level PARAMS ((void));
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extern tree poplevel PARAMS ((int, int, int));
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extern void print_lang_decl PARAMS ((FILE *, tree, int));
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extern void print_lang_identifier PARAMS ((FILE *, tree, int));
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extern void print_lang_type PARAMS ((FILE *, tree, int));
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extern void push_label_level PARAMS ((void));
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extern void push_parm_decl PARAMS ((tree));
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extern tree pushdecl PARAMS ((tree));
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extern tree pushdecl_top_level PARAMS ((tree));
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extern void pushlevel PARAMS ((int));
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extern void pushtag PARAMS ((tree, tree));
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extern void set_block PARAMS ((tree));
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extern tree shadow_label PARAMS ((tree));
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extern void shadow_record_fields PARAMS ((tree));
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extern void shadow_tag PARAMS ((tree));
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extern void shadow_tag_warned PARAMS ((tree, int));
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extern tree start_enum PARAMS ((tree));
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extern int start_function PARAMS ((tree, tree, tree,
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tree));
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extern tree start_decl PARAMS ((tree, tree, int,
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tree, tree));
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extern tree start_struct PARAMS ((enum tree_code, tree));
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extern void store_parm_decls PARAMS ((void));
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extern tree xref_tag PARAMS ((enum tree_code, tree));
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/* in c-typeck.c */
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extern tree require_complete_type PARAMS ((tree));
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extern void incomplete_type_error PARAMS ((tree, tree));
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/* Given two integer or real types, return the type for their sum.
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Given two compatible ANSI C types, returns the merged type. */
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extern tree common_type PARAMS ((tree, tree));
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extern int comptypes PARAMS ((tree, tree));
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extern tree c_sizeof PARAMS ((tree));
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extern tree c_sizeof_nowarn PARAMS ((tree));
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extern tree c_size_in_bytes PARAMS ((tree));
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extern tree c_alignof PARAMS ((tree));
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extern tree c_alignof_expr PARAMS ((tree));
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extern tree default_conversion PARAMS ((tree));
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extern tree build_component_ref PARAMS ((tree, tree));
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extern tree build_indirect_ref PARAMS ((tree, const char *));
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extern tree build_array_ref PARAMS ((tree, tree));
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extern tree build_function_call PARAMS ((tree, tree));
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extern tree parser_build_binary_op PARAMS ((enum tree_code,
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tree, tree));
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extern tree build_binary_op PARAMS ((enum tree_code,
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tree, tree, int));
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extern tree build_unary_op PARAMS ((enum tree_code,
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tree, int));
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extern int lvalue_p PARAMS ((tree));
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extern int lvalue_or_else PARAMS ((tree, const char *));
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extern void readonly_warning PARAMS ((tree, const char *));
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extern int mark_addressable PARAMS ((tree));
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extern tree build_conditional_expr PARAMS ((tree, tree, tree));
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extern tree build_compound_expr PARAMS ((tree));
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extern tree build_c_cast PARAMS ((tree, tree));
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extern tree build_modify_expr PARAMS ((tree, enum tree_code,
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tree));
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extern void store_init_value PARAMS ((tree, tree));
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extern void error_init PARAMS ((const char *));
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extern void pedwarn_init PARAMS ((const char *));
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extern void start_init PARAMS ((tree, tree, int));
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extern void finish_init PARAMS ((void));
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extern void really_start_incremental_init PARAMS ((tree));
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extern void push_init_level PARAMS ((int));
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extern tree pop_init_level PARAMS ((int));
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extern void set_init_index PARAMS ((tree, tree));
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extern void set_init_label PARAMS ((tree));
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extern void process_init_element PARAMS ((tree));
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extern void c_expand_asm_operands PARAMS ((tree, tree, tree,
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tree, int, char *,
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int));
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extern void c_expand_return PARAMS ((tree));
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extern tree c_expand_start_case PARAMS ((tree));
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/* in c-iterate.c */
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extern void init_iterators PARAMS ((void));
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extern void iterator_expand PARAMS ((tree));
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extern void iterator_for_loop_start PARAMS ((tree));
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extern void iterator_for_loop_end PARAMS ((tree));
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extern void iterator_for_loop_record PARAMS ((tree));
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extern void push_iterator_stack PARAMS ((void));
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extern void pop_iterator_stack PARAMS ((void));
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/* Set to 0 at beginning of a function definition, set to 1 if
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a return statement that specifies a return value is seen. */
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extern int current_function_returns_value;
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/* Set to 0 at beginning of a function definition, set to 1 if
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a return statement with no argument is seen. */
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extern int current_function_returns_null;
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/* Nonzero means the expression being parsed will never be evaluated.
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This is a count, since unevaluated expressions can nest. */
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extern int skip_evaluation;
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/* Nonzero means `$' can be in an identifier. */
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extern int dollars_in_ident;
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/* Nonzero means allow type mismatches in conditional expressions;
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just make their values `void'. */
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extern int flag_cond_mismatch;
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/* Nonzero means don't recognize the keyword `asm'. */
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extern int flag_no_asm;
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||
|
||
/* Nonzero means environment is hosted (i.e., not freestanding) */
|
||
|
||
extern int flag_hosted;
|
||
|
||
/* Nonzero means warn about implicit declarations. */
|
||
|
||
extern int warn_implicit;
|
||
|
||
/* Nonzero means give string constants the type `const char *'
|
||
to get extra warnings from them. These warnings will be too numerous
|
||
to be useful, except in thoroughly ANSIfied programs. */
|
||
|
||
extern int flag_const_strings;
|
||
|
||
/* Nonzero means warn about sizeof (function) or addition/subtraction
|
||
of function pointers. */
|
||
|
||
extern int warn_pointer_arith;
|
||
|
||
/* Nonzero means warn for all old-style non-prototype function decls. */
|
||
|
||
extern int warn_strict_prototypes;
|
||
|
||
/* Nonzero means warn about multiple (redundant) decls for the same single
|
||
variable or function. */
|
||
|
||
extern int warn_redundant_decls;
|
||
|
||
/* Nonzero means warn about extern declarations of objects not at
|
||
file-scope level and about *all* declarations of functions (whether
|
||
extern or static) not at file-scope level. Note that we exclude
|
||
implicit function declarations. To get warnings about those, use
|
||
-Wimplicit. */
|
||
|
||
extern int warn_nested_externs;
|
||
|
||
/* Nonzero means warn about pointer casts that can drop a type qualifier
|
||
from the pointer target type. */
|
||
|
||
extern int warn_cast_qual;
|
||
|
||
/* Nonzero means warn when casting a function call to a type that does
|
||
not match the return type (e.g. (float)sqrt() or (anything*)malloc()
|
||
when there is no previous declaration of sqrt or malloc. */
|
||
|
||
extern int warn_bad_function_cast;
|
||
|
||
/* Warn about functions which might be candidates for attribute noreturn. */
|
||
|
||
extern int warn_missing_noreturn;
|
||
|
||
/* Warn about traditional constructs whose meanings changed in ANSI C. */
|
||
|
||
extern int warn_traditional;
|
||
|
||
/* Warn about *printf or *scanf format/argument anomalies. */
|
||
|
||
extern int warn_format;
|
||
|
||
/* Warn about a subscript that has type char. */
|
||
|
||
extern int warn_char_subscripts;
|
||
|
||
/* Warn if a type conversion is done that might have confusing results. */
|
||
|
||
extern int warn_conversion;
|
||
|
||
/* Warn if main is suspicious. */
|
||
|
||
extern int warn_main;
|
||
|
||
/* Nonzero means do some things the same way PCC does. */
|
||
|
||
extern int flag_traditional;
|
||
|
||
/* Nonzero means use the ISO C99 dialect of C. */
|
||
|
||
extern int flag_isoc99;
|
||
|
||
/* Nonzero means to allow single precision math even if we're generally
|
||
being traditional. */
|
||
extern int flag_allow_single_precision;
|
||
|
||
/* Nonzero means warn about suggesting putting in ()'s. */
|
||
|
||
extern int warn_parentheses;
|
||
|
||
/* Warn if initializer is not completely bracketed. */
|
||
|
||
extern int warn_missing_braces;
|
||
|
||
/* Warn about comparison of signed and unsigned values. */
|
||
|
||
extern int warn_sign_compare;
|
||
|
||
/* Warn about testing equality of floating point numbers. */
|
||
|
||
extern int warn_float_equal;
|
||
|
||
/* Warn about multicharacter constants. */
|
||
|
||
extern int warn_multichar;
|
||
|
||
/* Warn about long long. */
|
||
|
||
extern int warn_long_long;
|
||
|
||
/* Nonzero means we are reading code that came from a system header file. */
|
||
|
||
extern int system_header_p;
|
||
|
||
/* Nonzero enables objc features. */
|
||
|
||
extern int doing_objc_thang;
|
||
|
||
/* In c-decl.c */
|
||
extern void finish_incomplete_decl PARAMS ((tree));
|
||
|
||
#endif /* not _C_TREE_H */
|