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
35 extern struct std_regs *std_regs;
36 extern unsigned num_std_regs;
38 extern struct expression *expout;
39 extern int expout_size;
40 extern int expout_ptr;
42 /* If this is nonzero, this block is used as the lexical context
45 extern struct block *expression_context_block;
47 /* The innermost context required by the stack and register variables
48 we've encountered so far. */
49 extern struct block *innermost_block;
51 /* The block in which the most recently discovered symbol was found.
52 FIXME: Should be declared along with lookup_symbol in symtab.h; is not
53 related specifically to parsing. */
54 extern struct block *block_found;
56 /* Number of arguments seen so far in innermost function call. */
57 extern int arglist_len;
59 /* A string token, either a char-string or bit-string. Char-strings are
60 used, for example, for the names of symbols. */
64 /* Pointer to first byte of char-string or first bit of bit-string */
66 /* Length of string in bytes for char-string or bits for bit-string */
80 int is_a_field_of_this;
83 /* For parsing of complicated types.
84 An array should be preceded in the list by the size of the array. */
87 tp_end = -1, tp_pointer, tp_reference, tp_array, tp_function
89 /* The stack can contain either an enum type_pieces or an int. */
92 enum type_pieces piece;
95 extern union type_stack_elt *type_stack;
96 extern int type_stack_depth, type_stack_size;
98 extern void write_exp_elt (union exp_element);
100 extern void write_exp_elt_opcode (enum exp_opcode);
102 extern void write_exp_elt_sym (struct symbol *);
104 extern void write_exp_elt_longcst (LONGEST);
106 extern void write_exp_elt_dblcst (DOUBLEST);
108 extern void write_exp_elt_type (struct type *);
110 extern void write_exp_elt_intern (struct internalvar *);
112 extern void write_exp_string (struct stoken);
114 extern void write_exp_bitstring (struct stoken);
116 extern void write_exp_elt_block (struct block *);
118 extern void write_exp_msymbol (struct minimal_symbol *,
119 struct type *, struct type *);
121 extern void write_dollar_variable (struct stoken str);
123 extern struct symbol *parse_nested_classes_for_hpacc (char *, int, char **,
126 extern char *find_template_name_end (char *);
128 extern void start_arglist (void);
130 extern int end_arglist (void);
132 extern char *copy_name (struct stoken);
134 extern void push_type (enum type_pieces);
136 extern void push_type_int (int);
138 extern enum type_pieces pop_type (void);
140 extern int pop_type_int (void);
142 extern int length_of_subexp (struct expression *, int);
144 extern struct type *follow_types (struct type *);
146 /* During parsing of a C expression, the pointer to the next character
147 is in this variable. */
151 /* Tokens that refer to names do so with explicit pointer and length,
152 so they can share the storage that lexptr is parsing.
154 When it is necessary to pass a name to a function that expects
155 a null-terminated string, the substring is copied out
156 into a block of storage that namecopy points to.
158 namecopy is allocated once, guaranteed big enough, for each parsing. */
160 extern char *namecopy;
162 /* Current depth in parentheses within the expression. */
164 extern int paren_depth;
166 /* Nonzero means stop parsing on first comma (if not within parentheses). */
168 extern int comma_terminates;
170 /* These codes indicate operator precedences for expression printing,
171 least tightly binding first. */
172 /* Adding 1 to a precedence value is done for binary operators,
173 on the operand which is more tightly bound, so that operators
174 of equal precedence within that operand will get parentheses. */
175 /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
176 they are used as the "surrounding precedence" to force
177 various kinds of things to be parenthesized. */
180 PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_LOGICAL_OR,
181 PREC_LOGICAL_AND, PREC_BITWISE_IOR, PREC_BITWISE_AND, PREC_BITWISE_XOR,
182 PREC_EQUAL, PREC_ORDER, PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
183 PREC_HYPER, PREC_PREFIX, PREC_SUFFIX, PREC_BUILTIN_FUNCTION
186 /* Table mapping opcodes into strings for printing operators
187 and precedences of the operators. */
192 enum exp_opcode opcode;
193 /* Precedence of operator. These values are used only by comparisons. */
194 enum precedence precedence;
196 /* For a binary operator: 1 iff right associate.
197 For a unary operator: 1 iff postfix. */
201 /* The generic method for targets to specify how their registers are
202 named. The mapping can be derived from three sources:
203 REGISTER_NAME; std_regs; or a target specific alias hook. */
205 extern int target_map_name_to_register (char *, int);
207 #endif /* PARSER_DEFS_H */