/* Parser definitions for GDB.
- Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+ Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
+ 1998, 1999, 2000, 2002, 2007 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 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 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 3 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.
+ 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. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#if !defined (PARSER_DEFS_H)
#define PARSER_DEFS_H 1
-struct std_regs {
- char *name;
- int regnum;
-};
+#include "doublest.h"
-extern struct std_regs std_regs[];
-extern unsigned num_std_regs;
+struct block;
-struct expression *expout;
-int expout_size;
-int expout_ptr;
+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. */
-struct block *expression_context_block;
+extern struct block *expression_context_block;
+
+/* If expression_context_block is non-zero, then this is the PC within
+ the block that we want to evaluate expressions at. When debugging
+ C or C++ code, we use this to find the exact line we're at, and
+ then look up the macro definitions active at that point. */
+extern CORE_ADDR expression_context_pc;
/* The innermost context required by the stack and register variables
we've encountered so far. */
-struct block *innermost_block;
+extern struct block *innermost_block;
-/* The block in which the most recently discovered symbol was found. */
-struct block *block_found;
+/* 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. */
-int arglist_len;
+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. */
int is_a_field_of_this;
};
+struct objc_class_str
+ {
+ struct stoken stoken;
+ struct type *type;
+ int class;
+ };
+
+
/* 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};
+ {
+ tp_end = -1,
+ tp_pointer,
+ tp_reference,
+ tp_array,
+ tp_function,
+ tp_const,
+ tp_volatile,
+ tp_space_identifier
+ };
/* 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;
+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 (union exp_element);
+
+extern void write_exp_elt_opcode (enum exp_opcode);
+
+extern void write_exp_elt_sym (struct symbol *);
+
+extern void write_exp_elt_longcst (LONGEST);
+
+extern void write_exp_elt_dblcst (DOUBLEST);
+
+extern void write_exp_elt_decfloatcst (gdb_byte *);
+
+extern void write_exp_elt_type (struct type *);
+
+extern void write_exp_elt_intern (struct internalvar *);
+
+extern void write_exp_string (struct stoken);
+
+extern void write_exp_bitstring (struct stoken);
+
+extern void write_exp_elt_block (struct block *);
-extern void write_exp_elt PARAMS ((union exp_element));
+extern void write_exp_elt_objfile (struct objfile *objfile);
-extern void write_exp_elt_opcode PARAMS ((enum exp_opcode));
+extern void write_exp_msymbol (struct minimal_symbol *,
+ struct type *, struct type *);
-extern void write_exp_elt_sym PARAMS ((struct symbol *));
+extern void write_dollar_variable (struct stoken str);
-extern void write_exp_elt_longcst PARAMS ((LONGEST));
+extern char *find_template_name_end (char *);
-extern void write_exp_elt_dblcst PARAMS ((double));
+extern void start_arglist (void);
-extern void write_exp_elt_type PARAMS ((struct type *));
+extern int end_arglist (void);
-extern void write_exp_elt_intern PARAMS ((struct internalvar *));
+extern char *copy_name (struct stoken);
-extern void write_exp_string PARAMS ((struct stoken));
+extern void push_type (enum type_pieces);
-extern void write_exp_bitstring PARAMS ((struct stoken));
+extern void push_type_int (int);
-extern void write_exp_elt_block PARAMS ((struct block *));
+extern void push_type_address_space (char *);
-extern void
-start_arglist PARAMS ((void));
+extern enum type_pieces pop_type (void);
-extern int
-end_arglist PARAMS ((void));
+extern int pop_type_int (void);
-extern char *
-copy_name PARAMS ((struct stoken));
+extern int length_of_subexp (struct expression *, int);
-extern void
-push_type PARAMS ((enum type_pieces));
+extern int dump_subexp (struct expression *, struct ui_file *, int);
-extern void
-push_type_int PARAMS ((int));
+extern int dump_subexp_body_standard (struct expression *,
+ struct ui_file *, int);
-extern enum type_pieces
-pop_type PARAMS ((void));
+extern void operator_length (struct expression *, int, int *, int *);
-extern int
-pop_type_int PARAMS ((void));
+extern void operator_length_standard (struct expression *, int, int *, int *);
-extern struct type *follow_types PARAMS ((struct type *));
+extern char *op_name_standard (enum exp_opcode);
+
+extern struct type *follow_types (struct type *);
+
+extern void null_post_parser (struct expression **, int);
/* During parsing of a C expression, the pointer to the next character
is in this variable. */
-char *lexptr;
+extern char *lexptr;
+
+/* After a token has been recognized, this variable points to it.
+ Currently used only for error reporting. */
+extern char *prev_lexptr;
/* Tokens that refer to names do so with explicit pointer and length,
so they can share the storage that lexptr is parsing.
namecopy is allocated once, guaranteed big enough, for each parsing. */
-char *namecopy;
+extern char *namecopy;
/* Current depth in parentheses within the expression. */
-int paren_depth;
+extern int paren_depth;
/* Nonzero means stop parsing on first comma (if not within parentheses). */
-int comma_terminates;
+extern int comma_terminates;
\f
/* These codes indicate operator precedences for expression printing,
least tightly binding first. */
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_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;
- int right_assoc;
-};
-
-#endif /* PARSER_DEFS_H */
+ {
+ 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;
+ };
+
+/* Information needed to print, prefixify, and evaluate expressions for
+ a given language. */
+
+struct exp_descriptor
+ {
+ /* Print subexpression. */
+ void (*print_subexp) (struct expression *, int *, struct ui_file *,
+ enum precedence);
+
+ /* Returns number of exp_elements needed to represent an operator and
+ the number of subexpressions it takes. */
+ void (*operator_length) (struct expression*, int, int*, int *);
+
+ /* Name of this operator for dumping purposes. */
+ char *(*op_name) (enum exp_opcode);
+
+ /* Dump the rest of this (prefix) expression after the operator
+ itself has been printed. See dump_subexp_body_standard in
+ (expprint.c). */
+ int (*dump_subexp_body) (struct expression *, struct ui_file *, int);
+
+ /* Evaluate an expression. */
+ struct value *(*evaluate_exp) (struct type *, struct expression *,
+ int *, enum noside);
+ };
+
+
+/* Default descriptor containing standard definitions of all
+ elements. */
+extern const struct exp_descriptor exp_descriptor_standard;
+
+/* Functions used by language-specific extended operators to (recursively)
+ print/dump subexpressions. */
+
+extern void print_subexp (struct expression *, int *, struct ui_file *,
+ enum precedence);
+
+extern void print_subexp_standard (struct expression *, int *,
+ struct ui_file *, enum precedence);
+
+/* Function used to avoid direct calls to fprintf
+ in the code generated by the bison parser. */
+
+extern void parser_fprintf (FILE *, const char *, ...) ATTR_FORMAT (printf, 2 ,3);
+
+#endif /* PARSER_DEFS_H */
projects / deliverable / binutils-gdb.git / blobdiff