1 /* Parser definitions for GDB.
2 Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
3 Modified from expread.y by the Department of Computer Science at the
4 State University of New York at Buffalo.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 #if !defined (PARSER_DEFS_H)
24 #define PARSER_DEFS_H 1
32 extern struct std_regs
*std_regs
;
33 extern unsigned num_std_regs
;
35 extern struct expression
*expout
;
36 extern int expout_size
;
37 extern int expout_ptr
;
39 /* If this is nonzero, this block is used as the lexical context
42 extern struct block
*expression_context_block
;
44 /* The innermost context required by the stack and register variables
45 we've encountered so far. */
46 extern struct block
*innermost_block
;
48 /* The block in which the most recently discovered symbol was found.
49 FIXME: Should be declared along with lookup_symbol in symtab.h; is not
50 related specifically to parsing. */
51 extern struct block
*block_found
;
53 /* Number of arguments seen so far in innermost function call. */
54 extern int arglist_len
;
56 /* A string token, either a char-string or bit-string. Char-strings are
57 used, for example, for the names of symbols. */
61 /* Pointer to first byte of char-string or first bit of bit-string */
63 /* Length of string in bytes for char-string or bits for bit-string */
77 int is_a_field_of_this
;
80 /* For parsing of complicated types.
81 An array should be preceded in the list by the size of the array. */
84 tp_end
= -1, tp_pointer
, tp_reference
, tp_array
, tp_function
86 /* The stack can contain either an enum type_pieces or an int. */
89 enum type_pieces piece
;
92 extern union type_stack_elt
*type_stack
;
93 extern int type_stack_depth
, type_stack_size
;
95 extern void write_exp_elt
PARAMS ((union exp_element
));
97 extern void write_exp_elt_opcode
PARAMS ((enum exp_opcode
));
99 extern void write_exp_elt_sym
PARAMS ((struct symbol
*));
101 extern void write_exp_elt_longcst
PARAMS ((LONGEST
));
103 extern void write_exp_elt_dblcst
PARAMS ((DOUBLEST
));
105 extern void write_exp_elt_type
PARAMS ((struct type
*));
107 extern void write_exp_elt_intern
PARAMS ((struct internalvar
*));
109 extern void write_exp_string
PARAMS ((struct stoken
));
111 extern void write_exp_bitstring
PARAMS ((struct stoken
));
113 extern void write_exp_elt_block
PARAMS ((struct block
*));
115 extern void write_exp_msymbol
PARAMS ((struct minimal_symbol
*,
116 struct type
*, struct type
*));
118 extern void write_dollar_variable
PARAMS ((struct stoken str
));
120 extern struct symbol
*parse_nested_classes_for_hpacc
PARAMS ((char *, int, char **, int *, char **));
122 extern char *find_template_name_end
PARAMS ((char *));
125 start_arglist
PARAMS ((void));
128 end_arglist
PARAMS ((void));
131 copy_name
PARAMS ((struct stoken
));
134 push_type
PARAMS ((enum type_pieces
));
137 push_type_int
PARAMS ((int));
139 extern enum type_pieces
140 pop_type
PARAMS ((void));
143 pop_type_int
PARAMS ((void));
146 length_of_subexp
PARAMS ((struct expression
*, int));
148 extern struct type
*follow_types
PARAMS ((struct type
*));
150 /* During parsing of a C expression, the pointer to the next character
151 is in this variable. */
155 /* Tokens that refer to names do so with explicit pointer and length,
156 so they can share the storage that lexptr is parsing.
158 When it is necessary to pass a name to a function that expects
159 a null-terminated string, the substring is copied out
160 into a block of storage that namecopy points to.
162 namecopy is allocated once, guaranteed big enough, for each parsing. */
164 extern char *namecopy
;
166 /* Current depth in parentheses within the expression. */
168 extern int paren_depth
;
170 /* Nonzero means stop parsing on first comma (if not within parentheses). */
172 extern int comma_terminates
;
174 /* These codes indicate operator precedences for expression printing,
175 least tightly binding first. */
176 /* Adding 1 to a precedence value is done for binary operators,
177 on the operand which is more tightly bound, so that operators
178 of equal precedence within that operand will get parentheses. */
179 /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
180 they are used as the "surrounding precedence" to force
181 various kinds of things to be parenthesized. */
184 PREC_NULL
, PREC_COMMA
, PREC_ABOVE_COMMA
, PREC_ASSIGN
, PREC_LOGICAL_OR
,
185 PREC_LOGICAL_AND
, PREC_BITWISE_IOR
, PREC_BITWISE_AND
, PREC_BITWISE_XOR
,
186 PREC_EQUAL
, PREC_ORDER
, PREC_SHIFT
, PREC_ADD
, PREC_MUL
, PREC_REPEAT
,
187 PREC_HYPER
, PREC_PREFIX
, PREC_SUFFIX
, PREC_BUILTIN_FUNCTION
190 /* Table mapping opcodes into strings for printing operators
191 and precedences of the operators. */
196 enum exp_opcode opcode
;
197 /* Precedence of operator. These values are used only by comparisons. */
198 enum precedence precedence
;
200 /* For a binary operator: 1 iff right associate.
201 For a unary operator: 1 iff postfix. */
205 /* The generic method for targets to specify how their registers are
206 named. The mapping can be derived from three sources:
207 REGISTER_NAME; std_regs; or a target specific alias hook. */
209 extern int target_map_name_to_register
PARAMS ((char *, int));
211 #endif /* PARSER_DEFS_H */