/* Parser definitions for GDB.
- Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
- 1998, 1999, 2000, 2002, 2007, 2008, 2009, 2010, 2011
- Free Software Foundation, Inc.
+ Copyright (C) 1986-2013 Free Software Foundation, Inc.
Modified from expread.y by the Department of Computer Science at the
State University of New York at Buffalo.
#define PARSER_DEFS_H 1
#include "doublest.h"
+#include "vec.h"
+#include "expression.h"
struct block;
/* If this is nonzero, this block is used as the lexical context
for symbol names. */
-extern struct block *expression_context_block;
+extern const 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
/* The innermost context required by the stack and register variables
we've encountered so far. */
-extern struct block *innermost_block;
+extern const 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;
+extern const struct block *block_found;
/* Number of arguments seen so far in innermost function call. */
extern int arglist_len;
int class;
};
+typedef struct type *type_ptr;
+DEF_VEC_P (type_ptr);
/* For parsing of complicated types.
An array should be preceded in the list by the size of the array. */
tp_pointer,
tp_reference,
tp_array,
- tp_function,
+ tp_function,
+ tp_function_with_arguments,
tp_const,
tp_volatile,
- tp_space_identifier
+ tp_space_identifier,
+ tp_type_stack
};
/* The stack can contain either an enum type_pieces or an int. */
union type_stack_elt
{
enum type_pieces piece;
int int_val;
+ struct type_stack *stack_val;
+ VEC (type_ptr) *typelist_val;
};
-extern union type_stack_elt *type_stack;
-extern int type_stack_depth, type_stack_size;
+
+/* The type stack is an instance of this structure. */
+
+struct type_stack
+{
+ /* Elements on the stack. */
+ union type_stack_elt *elements;
+ /* Current stack depth. */
+ int depth;
+ /* Allocated size of stack. */
+ int size;
+};
+
+/* Helper function to initialize the expout, expout_size, expout_ptr
+ trio before it is used to store expression elements created during
+ the parsing of an expression. INITIAL_SIZE is the initial size of
+ the expout array. LANG is the language used to parse the expression.
+ And GDBARCH is the gdbarch to use during parsing. */
+
+extern void initialize_expout (int, const struct language_defn *,
+ struct gdbarch *);
+
+/* Helper function that frees any unsed space in the expout array.
+ It is generally used when the parser has just been parsed and
+ created. */
+
+extern void reallocate_expout (void);
+
+/* Reverse an expression from suffix form (in which it is constructed)
+ to prefix form (in which we can conveniently print or execute it).
+ Ordinarily this always returns -1. However, if EXPOUT_LAST_STRUCT
+ is not -1 (i.e., we are trying to complete a field name), it will
+ return the index of the subexpression which is the left-hand-side
+ of the struct operation at EXPOUT_LAST_STRUCT. */
+
+extern int prefixify_expression (struct expression *expr);
extern void write_exp_elt_opcode (enum exp_opcode);
extern void write_exp_bitstring (struct stoken);
-extern void write_exp_elt_block (struct block *);
+extern void write_exp_elt_block (const struct block *);
extern void write_exp_elt_objfile (struct objfile *objfile);
-extern void write_exp_msymbol (struct minimal_symbol *);
+extern void write_exp_msymbol (struct bound_minimal_symbol);
extern void write_dollar_variable (struct stoken str);
extern char *copy_name (struct stoken);
+extern void insert_type (enum type_pieces);
+
extern void push_type (enum type_pieces);
extern void push_type_int (int);
-extern void push_type_address_space (char *);
+extern void insert_type_address_space (char *);
extern enum type_pieces pop_type (void);
extern int pop_type_int (void);
+extern struct type_stack *get_type_stack (void);
+
+extern struct type_stack *append_type_stack (struct type_stack *to,
+ struct type_stack *from);
+
+extern void push_type_stack (struct type_stack *stack);
+
+extern void type_stack_cleanup (void *arg);
+
+extern void push_typelist (VEC (type_ptr) *typelist);
+
extern int length_of_subexp (struct expression *, int);
extern int dump_subexp (struct expression *, struct ui_file *, int);
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.
-
- 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;
void *data),
void *data);
- /* Name of this operator for dumping purposes. */
+ /* Name of this operator for dumping purposes.
+ The returned value should never be NULL, even if EXP_OPCODE is
+ an unknown opcode (a string containing an image of the numeric
+ value of the opcode can be returned, for instance). */
char *(*op_name) (enum exp_opcode);
/* Dump the rest of this (prefix) expression after the operator
extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile);
+extern void mark_completion_tag (enum type_code, const char *ptr,
+ int length);
+
#endif /* PARSER_DEFS_H */
+
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