1 /* Parser definitions for GDB.
2 Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
3 1998, 1999, 2000 Free Software Foundation, Inc.
4 Modified from expread.y by the Department of Computer Science at the
5 State University of New York at Buffalo.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330,
22 Boston, MA 02111-1307, USA. */
24 #if !defined (PARSER_DEFS_H)
25 #define PARSER_DEFS_H 1
33 extern struct std_regs
*std_regs
;
34 extern unsigned num_std_regs
;
36 extern struct expression
*expout
;
37 extern int expout_size
;
38 extern int expout_ptr
;
40 /* If this is nonzero, this block is used as the lexical context
43 extern struct block
*expression_context_block
;
45 /* The innermost context required by the stack and register variables
46 we've encountered so far. */
47 extern struct block
*innermost_block
;
49 /* The block in which the most recently discovered symbol was found.
50 FIXME: Should be declared along with lookup_symbol in symtab.h; is not
51 related specifically to parsing. */
52 extern struct block
*block_found
;
54 /* Number of arguments seen so far in innermost function call. */
55 extern int arglist_len
;
57 /* A string token, either a char-string or bit-string. Char-strings are
58 used, for example, for the names of symbols. */
62 /* Pointer to first byte of char-string or first bit of bit-string */
64 /* Length of string in bytes for char-string or bits for bit-string */
78 int is_a_field_of_this
;
81 /* For parsing of complicated types.
82 An array should be preceded in the list by the size of the array. */
85 tp_end
= -1, tp_pointer
, tp_reference
, tp_array
, tp_function
87 /* The stack can contain either an enum type_pieces or an int. */
90 enum type_pieces piece
;
93 extern union type_stack_elt
*type_stack
;
94 extern int type_stack_depth
, type_stack_size
;
96 extern void write_exp_elt (union exp_element
);
98 extern void write_exp_elt_opcode (enum exp_opcode
);
100 extern void write_exp_elt_sym (struct symbol
*);
102 extern void write_exp_elt_longcst (LONGEST
);
104 extern void write_exp_elt_dblcst (DOUBLEST
);
106 extern void write_exp_elt_type (struct type
*);
108 extern void write_exp_elt_intern (struct internalvar
*);
110 extern void write_exp_string (struct stoken
);
112 extern void write_exp_bitstring (struct stoken
);
114 extern void write_exp_elt_block (struct block
*);
116 extern void write_exp_msymbol (struct minimal_symbol
*,
117 struct type
*, struct type
*);
119 extern void write_dollar_variable (struct stoken str
);
121 extern struct symbol
*parse_nested_classes_for_hpacc (char *, int, char **,
124 extern char *find_template_name_end (char *);
126 extern void start_arglist (void);
128 extern int end_arglist (void);
130 extern char *copy_name (struct stoken
);
132 extern void push_type (enum type_pieces
);
134 extern void push_type_int (int);
136 extern enum type_pieces
pop_type (void);
138 extern int pop_type_int (void);
140 extern int length_of_subexp (struct expression
*, int);
142 extern struct type
*follow_types (struct type
*);
144 /* During parsing of a C expression, the pointer to the next character
145 is in this variable. */
149 /* Tokens that refer to names do so with explicit pointer and length,
150 so they can share the storage that lexptr is parsing.
152 When it is necessary to pass a name to a function that expects
153 a null-terminated string, the substring is copied out
154 into a block of storage that namecopy points to.
156 namecopy is allocated once, guaranteed big enough, for each parsing. */
158 extern char *namecopy
;
160 /* Current depth in parentheses within the expression. */
162 extern int paren_depth
;
164 /* Nonzero means stop parsing on first comma (if not within parentheses). */
166 extern int comma_terminates
;
168 /* These codes indicate operator precedences for expression printing,
169 least tightly binding first. */
170 /* Adding 1 to a precedence value is done for binary operators,
171 on the operand which is more tightly bound, so that operators
172 of equal precedence within that operand will get parentheses. */
173 /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
174 they are used as the "surrounding precedence" to force
175 various kinds of things to be parenthesized. */
178 PREC_NULL
, PREC_COMMA
, PREC_ABOVE_COMMA
, PREC_ASSIGN
, PREC_LOGICAL_OR
,
179 PREC_LOGICAL_AND
, PREC_BITWISE_IOR
, PREC_BITWISE_AND
, PREC_BITWISE_XOR
,
180 PREC_EQUAL
, PREC_ORDER
, PREC_SHIFT
, PREC_ADD
, PREC_MUL
, PREC_REPEAT
,
181 PREC_HYPER
, PREC_PREFIX
, PREC_SUFFIX
, PREC_BUILTIN_FUNCTION
184 /* Table mapping opcodes into strings for printing operators
185 and precedences of the operators. */
190 enum exp_opcode opcode
;
191 /* Precedence of operator. These values are used only by comparisons. */
192 enum precedence precedence
;
194 /* For a binary operator: 1 iff right associate.
195 For a unary operator: 1 iff postfix. */
199 /* The generic method for targets to specify how their registers are
200 named. The mapping can be derived from three sources:
201 REGISTER_NAME; std_regs; or a target specific alias hook. */
203 extern int target_map_name_to_register (char *, int);
205 #endif /* PARSER_DEFS_H */
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