1 /* Parser definitions for GDB.
3 Copyright 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996,
4 1997, 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
6 Modified from expread.y by the Department of Computer Science at the
7 State University of New York at Buffalo.
9 This file is part of GDB.
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program; if not, write to the Free Software
23 Foundation, Inc., 59 Temple Place - Suite 330,
24 Boston, MA 02111-1307, USA. */
26 #if !defined (PARSER_DEFS_H)
27 #define PARSER_DEFS_H 1
31 extern struct expression *expout;
32 extern int expout_size;
33 extern int expout_ptr;
35 /* If this is nonzero, this block is used as the lexical context
38 extern struct block *expression_context_block;
40 /* If expression_context_block is non-zero, then this is the PC within
41 the block that we want to evaluate expressions at. When debugging
42 C or C++ code, we use this to find the exact line we're at, and
43 then look up the macro definitions active at that point. */
44 extern CORE_ADDR expression_context_pc;
46 /* The innermost context required by the stack and register variables
47 we've encountered so far. */
48 extern struct block *innermost_block;
50 /* The block in which the most recently discovered symbol was found.
51 FIXME: Should be declared along with lookup_symbol in symtab.h; is not
52 related specifically to parsing. */
53 extern struct block *block_found;
55 /* Number of arguments seen so far in innermost function call. */
56 extern int arglist_len;
58 /* A string token, either a char-string or bit-string. Char-strings are
59 used, for example, for the names of symbols. */
63 /* Pointer to first byte of char-string or first bit of bit-string */
65 /* Length of string in bytes for char-string or bits for bit-string */
79 int is_a_field_of_this;
90 /* For parsing of complicated types.
91 An array should be preceded in the list by the size of the array. */
103 /* The stack can contain either an enum type_pieces or an int. */
106 enum type_pieces piece;
109 extern union type_stack_elt *type_stack;
110 extern int type_stack_depth, type_stack_size;
112 extern void write_exp_elt (union exp_element);
114 extern void write_exp_elt_opcode (enum exp_opcode);
116 extern void write_exp_elt_sym (struct symbol *);
118 extern void write_exp_elt_longcst (LONGEST);
120 extern void write_exp_elt_dblcst (DOUBLEST);
122 extern void write_exp_elt_type (struct type *);
124 extern void write_exp_elt_intern (struct internalvar *);
126 extern void write_exp_string (struct stoken);
128 extern void write_exp_bitstring (struct stoken);
130 extern void write_exp_elt_block (struct block *);
132 extern void write_exp_msymbol (struct minimal_symbol *,
133 struct type *, struct type *);
135 extern void write_dollar_variable (struct stoken str);
137 extern struct symbol *parse_nested_classes_for_hpacc (char *, int, char **,
140 extern char *find_template_name_end (char *);
142 extern void start_arglist (void);
144 extern int end_arglist (void);
146 extern char *copy_name (struct stoken);
148 extern void push_type (enum type_pieces);
150 extern void push_type_int (int);
152 extern void push_type_address_space (char *);
154 extern enum type_pieces pop_type (void);
156 extern int pop_type_int (void);
158 extern int length_of_subexp (struct expression *, int);
160 extern struct type *follow_types (struct type *);
162 /* During parsing of a C expression, the pointer to the next character
163 is in this variable. */
167 /* After a token has been recognized, this variable points to it.
168 Currently used only for error reporting. */
169 extern char *prev_lexptr;
171 /* Tokens that refer to names do so with explicit pointer and length,
172 so they can share the storage that lexptr is parsing.
174 When it is necessary to pass a name to a function that expects
175 a null-terminated string, the substring is copied out
176 into a block of storage that namecopy points to.
178 namecopy is allocated once, guaranteed big enough, for each parsing. */
180 extern char *namecopy;
182 /* Current depth in parentheses within the expression. */
184 extern int paren_depth;
186 /* Nonzero means stop parsing on first comma (if not within parentheses). */
188 extern int comma_terminates;
190 /* These codes indicate operator precedences for expression printing,
191 least tightly binding first. */
192 /* Adding 1 to a precedence value is done for binary operators,
193 on the operand which is more tightly bound, so that operators
194 of equal precedence within that operand will get parentheses. */
195 /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
196 they are used as the "surrounding precedence" to force
197 various kinds of things to be parenthesized. */
200 PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_LOGICAL_OR,
201 PREC_LOGICAL_AND, PREC_BITWISE_IOR, PREC_BITWISE_AND, PREC_BITWISE_XOR,
202 PREC_EQUAL, PREC_ORDER, PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
203 PREC_HYPER, PREC_PREFIX, PREC_SUFFIX, PREC_BUILTIN_FUNCTION
206 /* Table mapping opcodes into strings for printing operators
207 and precedences of the operators. */
212 enum exp_opcode opcode;
213 /* Precedence of operator. These values are used only by comparisons. */
214 enum precedence precedence;
216 /* For a binary operator: 1 iff right associate.
217 For a unary operator: 1 iff postfix. */
221 /* The generic method for targets to specify how their registers are
222 named. The mapping can be derived from two sources: REGISTER_NAME;
225 extern int target_map_name_to_register (char *, int);
227 /* for parsing Objective C */
228 extern void start_msglist (void);
229 extern void add_msglist (struct stoken *str, int addcolon);
230 extern int end_msglist (void);
232 /* Function used to avoid direct calls to fprintf
233 in the code generated by the bison parser. */
235 extern void parser_fprintf (FILE *, const char *, ...) ATTR_FORMAT (printf, 2 ,3);
237 #endif /* PARSER_DEFS_H */