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 */