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3d6b6a90 JG |
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. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
1ab3bf1b JG |
22 | #if !defined (PARSER_DEFS_H) |
23 | #define PARSER_DEFS_H 1 | |
24 | ||
3d6b6a90 JG |
25 | struct std_regs { |
26 | char *name; | |
27 | int regnum; | |
28 | }; | |
29 | ||
30 | extern struct std_regs std_regs[]; | |
31 | extern unsigned num_std_regs; | |
32 | ||
33 | struct expression *expout; | |
34 | int expout_size; | |
35 | int expout_ptr; | |
36 | ||
3d6b6a90 JG |
37 | /* If this is nonzero, this block is used as the lexical context |
38 | for symbol names. */ | |
39 | ||
40 | struct block *expression_context_block; | |
41 | ||
42 | /* The innermost context required by the stack and register variables | |
43 | we've encountered so far. */ | |
44 | struct block *innermost_block; | |
45 | ||
46 | /* The block in which the most recently discovered symbol was found. */ | |
47 | struct block *block_found; | |
48 | ||
49 | /* Number of arguments seen so far in innermost function call. */ | |
50 | int arglist_len; | |
51 | ||
81028ab0 FF |
52 | /* A string token, either a char-string or bit-string. Char-strings are |
53 | used, for example, for the names of symbols. */ | |
3d6b6a90 JG |
54 | |
55 | struct stoken | |
56 | { | |
81028ab0 | 57 | /* Pointer to first byte of char-string or first bit of bit-string */ |
3d6b6a90 | 58 | char *ptr; |
81028ab0 | 59 | /* Length of string in bytes for char-string or bits for bit-string */ |
3d6b6a90 JG |
60 | int length; |
61 | }; | |
62 | ||
63 | struct ttype | |
64 | { | |
65 | struct stoken stoken; | |
66 | struct type *type; | |
67 | }; | |
68 | ||
69 | struct symtoken | |
70 | { | |
71 | struct stoken stoken; | |
72 | struct symbol *sym; | |
73 | int is_a_field_of_this; | |
74 | }; | |
75 | ||
76 | /* For parsing of complicated types. | |
77 | An array should be preceded in the list by the size of the array. */ | |
78 | enum type_pieces | |
79 | {tp_end = -1, tp_pointer, tp_reference, tp_array, tp_function}; | |
80 | /* The stack can contain either an enum type_pieces or an int. */ | |
81 | union type_stack_elt { | |
82 | enum type_pieces piece; | |
83 | int int_val; | |
84 | }; | |
85 | union type_stack_elt *type_stack; | |
86 | int type_stack_depth, type_stack_size; | |
87 | ||
100f92e2 | 88 | extern void write_exp_elt PARAMS ((union exp_element)); |
1ab3bf1b | 89 | |
100f92e2 | 90 | extern void write_exp_elt_opcode PARAMS ((enum exp_opcode)); |
1ab3bf1b | 91 | |
100f92e2 | 92 | extern void write_exp_elt_sym PARAMS ((struct symbol *)); |
1ab3bf1b | 93 | |
100f92e2 | 94 | extern void write_exp_elt_longcst PARAMS ((LONGEST)); |
1ab3bf1b | 95 | |
100f92e2 | 96 | extern void write_exp_elt_dblcst PARAMS ((double)); |
1ab3bf1b | 97 | |
100f92e2 | 98 | extern void write_exp_elt_type PARAMS ((struct type *)); |
1ab3bf1b | 99 | |
100f92e2 | 100 | extern void write_exp_elt_intern PARAMS ((struct internalvar *)); |
1ab3bf1b | 101 | |
100f92e2 | 102 | extern void write_exp_string PARAMS ((struct stoken)); |
1ab3bf1b | 103 | |
100f92e2 JK |
104 | extern void write_exp_bitstring PARAMS ((struct stoken)); |
105 | ||
106 | extern void write_exp_elt_block PARAMS ((struct block *)); | |
81028ab0 | 107 | |
abe28b92 JK |
108 | extern void write_exp_msymbol PARAMS ((struct minimal_symbol *, |
109 | struct type *, struct type *)); | |
110 | ||
1ab3bf1b JG |
111 | extern void |
112 | start_arglist PARAMS ((void)); | |
113 | ||
114 | extern int | |
115 | end_arglist PARAMS ((void)); | |
116 | ||
1ab3bf1b JG |
117 | extern char * |
118 | copy_name PARAMS ((struct stoken)); | |
119 | ||
120 | extern void | |
121 | push_type PARAMS ((enum type_pieces)); | |
122 | ||
123 | extern void | |
124 | push_type_int PARAMS ((int)); | |
125 | ||
126 | extern enum type_pieces | |
127 | pop_type PARAMS ((void)); | |
128 | ||
129 | extern int | |
130 | pop_type_int PARAMS ((void)); | |
3d6b6a90 | 131 | |
f843c95f JK |
132 | extern struct type *follow_types PARAMS ((struct type *)); |
133 | ||
3d6b6a90 JG |
134 | /* During parsing of a C expression, the pointer to the next character |
135 | is in this variable. */ | |
136 | ||
137 | char *lexptr; | |
138 | ||
139 | /* Tokens that refer to names do so with explicit pointer and length, | |
140 | so they can share the storage that lexptr is parsing. | |
141 | ||
142 | When it is necessary to pass a name to a function that expects | |
143 | a null-terminated string, the substring is copied out | |
144 | into a block of storage that namecopy points to. | |
145 | ||
146 | namecopy is allocated once, guaranteed big enough, for each parsing. */ | |
147 | ||
148 | char *namecopy; | |
149 | ||
150 | /* Current depth in parentheses within the expression. */ | |
151 | ||
152 | int paren_depth; | |
153 | ||
154 | /* Nonzero means stop parsing on first comma (if not within parentheses). */ | |
155 | ||
156 | int comma_terminates; | |
157 | \f | |
158 | /* These codes indicate operator precedences for expression printing, | |
159 | least tightly binding first. */ | |
160 | /* Adding 1 to a precedence value is done for binary operators, | |
161 | on the operand which is more tightly bound, so that operators | |
162 | of equal precedence within that operand will get parentheses. */ | |
163 | /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator; | |
164 | they are used as the "surrounding precedence" to force | |
165 | various kinds of things to be parenthesized. */ | |
166 | enum precedence | |
e58de8a2 FF |
167 | { PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_LOGICAL_OR, |
168 | PREC_LOGICAL_AND, PREC_BITWISE_IOR, PREC_BITWISE_AND, PREC_BITWISE_XOR, | |
169 | PREC_EQUAL, PREC_ORDER, PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT, | |
3d6b6a90 JG |
170 | PREC_HYPER, PREC_PREFIX, PREC_SUFFIX }; |
171 | ||
172 | /* Table mapping opcodes into strings for printing operators | |
173 | and precedences of the operators. */ | |
174 | ||
175 | struct op_print | |
176 | { | |
177 | char *string; | |
178 | enum exp_opcode opcode; | |
179 | /* Precedence of operator. These values are used only by comparisons. */ | |
180 | enum precedence precedence; | |
181 | int right_assoc; | |
182 | }; | |
1ab3bf1b JG |
183 | |
184 | #endif /* PARSER_DEFS_H */ |