From c906108c21474dfb4ed285bcc0ac6fe02cd400cc Mon Sep 17 00:00:00 2001 From: Stan Shebs Date: Fri, 16 Apr 1999 01:35:26 +0000 Subject: Initial creation of sourceware repository --- gdb/parser-defs.h | 198 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 198 insertions(+) create mode 100644 gdb/parser-defs.h (limited to 'gdb/parser-defs.h') diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h new file mode 100644 index 0000000..3226fdd --- /dev/null +++ b/gdb/parser-defs.h @@ -0,0 +1,198 @@ +/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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; + +extern struct expression *expout; +extern int expout_size; +extern int expout_ptr; + +/* If this is nonzero, this block is used as the lexical context + for symbol names. */ + +extern struct block *expression_context_block; + +/* The innermost context required by the stack and register variables + we've encountered so far. */ +extern struct block *innermost_block; + +/* The block in which the most recently discovered symbol was found. + FIXME: Should be declared along with lookup_symbol in symtab.h; is not + related specifically to parsing. */ +extern struct block *block_found; + +/* Number of arguments seen so far in innermost function call. */ +extern int arglist_len; + +/* A string token, either a char-string or bit-string. Char-strings are + used, for example, for the names of symbols. */ + +struct stoken + { + /* Pointer to first byte of char-string or first bit of bit-string */ + char *ptr; + /* Length of string in bytes for char-string or bits for bit-string */ + 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; +}; +extern union type_stack_elt *type_stack; +extern 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 ((DOUBLEST)); + +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 write_exp_bitstring PARAMS ((struct stoken)); + +extern void write_exp_elt_block PARAMS ((struct block *)); + +extern void write_exp_msymbol PARAMS ((struct minimal_symbol *, + struct type *, struct type *)); + +extern void write_dollar_variable PARAMS ((struct stoken str)); + +extern struct symbol * parse_nested_classes_for_hpacc PARAMS ((char *, int, char **, int *, char **)); + +extern char * find_template_name_end PARAMS ((char *)); + +extern void +start_arglist PARAMS ((void)); + +extern int +end_arglist 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)); + +extern int +length_of_subexp PARAMS ((struct expression *, int)); + +extern struct type *follow_types PARAMS ((struct type *)); + +/* During parsing of a C expression, the pointer to the next character + is in this variable. */ + +extern 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. */ + +extern char *namecopy; + +/* Current depth in parentheses within the expression. */ + +extern int paren_depth; + +/* Nonzero means stop parsing on first comma (if not within parentheses). */ + +extern 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_LOGICAL_OR, + PREC_LOGICAL_AND, PREC_BITWISE_IOR, PREC_BITWISE_AND, PREC_BITWISE_XOR, + PREC_EQUAL, PREC_ORDER, PREC_SHIFT, PREC_ADD, PREC_MUL, PREC_REPEAT, + PREC_HYPER, PREC_PREFIX, PREC_SUFFIX, PREC_BUILTIN_FUNCTION }; + +/* 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; + + /* For a binary operator: 1 iff right associate. + For a unary operator: 1 iff postfix. */ + int right_assoc; +}; + +#endif /* PARSER_DEFS_H */ -- cgit v1.1