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- /* Parser definitions for GDB.
- Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
- Modified from expread.y by the Department of Computer Science at the
- State University of New York at Buffalo.
-
- This file is part of GDB.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #if !defined (PARSER_DEFS_H)
- #define PARSER_DEFS_H 1
-
- struct std_regs {
- char *name;
- int regnum;
- };
-
- extern struct std_regs std_regs[];
- extern unsigned num_std_regs;
-
- struct expression *expout;
- int expout_size;
- int expout_ptr;
-
- /* If this is nonzero, this block is used as the lexical context
- for symbol names. */
-
- struct block *expression_context_block;
-
- /* The innermost context required by the stack and register variables
- we've encountered so far. */
- struct block *innermost_block;
-
- /* The block in which the most recently discovered symbol was found. */
- struct block *block_found;
-
- /* Number of arguments seen so far in innermost function call. */
- int arglist_len;
-
- /* Data structure for saving values of arglist_len
- for function calls whose arguments contain other function calls. */
-
- struct funcall
- {
- struct funcall *next;
- int arglist_len;
- };
-
- struct funcall *funcall_chain;
-
- /* This kind of datum is used to represent the name
- of a symbol token. */
-
- struct stoken
- {
- char *ptr;
- int length;
- };
-
- struct ttype
- {
- struct stoken stoken;
- struct type *type;
- };
-
- struct symtoken
- {
- struct stoken stoken;
- struct symbol *sym;
- int is_a_field_of_this;
- };
-
- /* For parsing of complicated types.
- An array should be preceded in the list by the size of the array. */
- enum type_pieces
- {tp_end = -1, tp_pointer, tp_reference, tp_array, tp_function};
- /* The stack can contain either an enum type_pieces or an int. */
- union type_stack_elt {
- enum type_pieces piece;
- int int_val;
- };
- union type_stack_elt *type_stack;
- int type_stack_depth, type_stack_size;
-
- extern void
- write_exp_elt PARAMS ((union exp_element));
-
- extern void
- write_exp_elt_opcode PARAMS ((enum exp_opcode));
-
- extern void
- write_exp_elt_sym PARAMS ((struct symbol *));
-
- extern void
- write_exp_elt_longcst PARAMS ((LONGEST));
-
- extern void
- write_exp_elt_dblcst PARAMS ((double));
-
- extern void
- write_exp_elt_type PARAMS ((struct type *));
-
- extern void
- write_exp_elt_intern PARAMS ((struct internalvar *));
-
- extern void
- write_exp_string PARAMS ((struct stoken));
-
- extern void
- start_arglist PARAMS ((void));
-
- extern int
- end_arglist PARAMS ((void));
-
- extern void
- free_funcalls PARAMS ((void));
-
- extern char *
- copy_name PARAMS ((struct stoken));
-
- extern void
- push_type PARAMS ((enum type_pieces));
-
- extern void
- push_type_int PARAMS ((int));
-
- extern enum type_pieces
- pop_type PARAMS ((void));
-
- extern int
- pop_type_int PARAMS ((void));
-
- /* During parsing of a C expression, the pointer to the next character
- is in this variable. */
-
- char *lexptr;
-
- /* Tokens that refer to names do so with explicit pointer and length,
- so they can share the storage that lexptr is parsing.
-
- When it is necessary to pass a name to a function that expects
- a null-terminated string, the substring is copied out
- into a block of storage that namecopy points to.
-
- namecopy is allocated once, guaranteed big enough, for each parsing. */
-
- char *namecopy;
-
- /* Current depth in parentheses within the expression. */
-
- int paren_depth;
-
- /* Nonzero means stop parsing on first comma (if not within parentheses). */
-
- int comma_terminates;
-
- /* These codes indicate operator precedences for expression printing,
- least tightly binding first. */
- /* Adding 1 to a precedence value is done for binary operators,
- on the operand which is more tightly bound, so that operators
- of equal precedence within that operand will get parentheses. */
- /* PREC_HYPER and PREC_ABOVE_COMMA are not the precedence of any operator;
- they are used as the "surrounding precedence" to force
- various kinds of things to be parenthesized. */
- enum precedence
- { PREC_NULL, PREC_COMMA, PREC_ABOVE_COMMA, PREC_ASSIGN, PREC_OR, PREC_AND,
- PREC_LOGIOR, PREC_LOGAND, PREC_LOGXOR, PREC_EQUAL, PREC_ORDER,
- PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT,
- PREC_HYPER, PREC_PREFIX, PREC_SUFFIX };
-
- /* Table mapping opcodes into strings for printing operators
- and precedences of the operators. */
-
- struct op_print
- {
- char *string;
- enum exp_opcode opcode;
- /* Precedence of operator. These values are used only by comparisons. */
- enum precedence precedence;
- int right_assoc;
- };
-
- #endif /* PARSER_DEFS_H */
-