/* Parser definitions for GDB.
- Copyright (C) 1986, 1989-2000, 2002, 2007-2012 Free Software
- Foundation, Inc.
+ Copyright (C) 1986-2017 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;
+struct language_defn;
+struct internalvar;
extern int parser_debug;
-extern struct expression *expout;
-extern int expout_size;
-extern int expout_ptr;
+#define parse_gdbarch(ps) ((ps)->expout->gdbarch)
+#define parse_language(ps) ((ps)->expout->language_defn)
-#define parse_gdbarch (expout->gdbarch)
-#define parse_language (expout->language_defn)
+struct parser_state
+{
+ /* The expression related to this parser state. */
+
+ struct expression *expout;
+
+ /* The size of the expression above. */
+
+ size_t expout_size;
+
+ /* The number of elements already in the expression. This is used
+ to know where to put new elements. */
+
+ size_t expout_ptr;
+};
/* 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;
-
-/* 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 *innermost_block;
/* Number of arguments seen so far in innermost function call. */
extern int arglist_len;
struct stoken
{
/* Pointer to first byte of char-string or first bit of bit-string. */
- char *ptr;
+ const char *ptr;
/* Length of string in bytes for char-string or bits for bit-string. */
int length;
};
struct symtoken
{
struct stoken stoken;
- struct symbol *sym;
+ struct block_symbol sym;
int is_a_field_of_this;
};
{
struct stoken stoken;
struct type *type;
- int class;
+ int theclass;
};
+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_end = -1,
tp_pointer,
tp_reference,
+ tp_rvalue_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
+ trio inside PS 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 *);
+extern void initialize_expout (struct parser_state *ps,
+ size_t initial_size,
+ const struct language_defn *lang,
+ struct gdbarch *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. */
+/* Helper function that reallocates the EXPOUT inside PS in order to
+ eliminate any unused space. It is generally used when the expression
+ has just been parsed and created. */
-extern void reallocate_expout (void);
+extern void reallocate_expout (struct parser_state *ps);
/* Reverse an expression from suffix form (in which it is constructed)
to prefix form (in which we can conveniently print or execute it).
extern int prefixify_expression (struct expression *expr);
-extern void write_exp_elt_opcode (enum exp_opcode);
+extern void write_exp_elt_opcode (struct parser_state *, enum exp_opcode);
-extern void write_exp_elt_sym (struct symbol *);
+extern void write_exp_elt_sym (struct parser_state *, struct symbol *);
-extern void write_exp_elt_longcst (LONGEST);
+extern void write_exp_elt_longcst (struct parser_state *, LONGEST);
-extern void write_exp_elt_dblcst (DOUBLEST);
+extern void write_exp_elt_dblcst (struct parser_state *, DOUBLEST);
-extern void write_exp_elt_decfloatcst (gdb_byte *);
+extern void write_exp_elt_decfloatcst (struct parser_state *, gdb_byte *);
-extern void write_exp_elt_type (struct type *);
+extern void write_exp_elt_type (struct parser_state *, struct type *);
-extern void write_exp_elt_intern (struct internalvar *);
+extern void write_exp_elt_intern (struct parser_state *, struct internalvar *);
-extern void write_exp_string (struct stoken);
+extern void write_exp_string (struct parser_state *, struct stoken);
-void write_exp_string_vector (int type, struct stoken_vector *vec);
+void write_exp_string_vector (struct parser_state *, int type,
+ struct stoken_vector *vec);
-extern void write_exp_bitstring (struct stoken);
+extern void write_exp_bitstring (struct parser_state *, struct stoken);
-extern void write_exp_elt_block (struct block *);
+extern void write_exp_elt_block (struct parser_state *, const struct block *);
-extern void write_exp_elt_objfile (struct objfile *objfile);
+extern void write_exp_elt_objfile (struct parser_state *,
+ struct objfile *objfile);
-extern void write_exp_msymbol (struct minimal_symbol *);
+extern void write_exp_msymbol (struct parser_state *,
+ struct bound_minimal_symbol);
-extern void write_dollar_variable (struct stoken str);
+extern void write_dollar_variable (struct parser_state *, struct stoken str);
-extern void mark_struct_expression (void);
+extern void mark_struct_expression (struct parser_state *);
-extern char *find_template_name_end (char *);
+extern const char *find_template_name_end (const char *);
extern void start_arglist (void);
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 (struct parser_state *, char *);
extern enum type_pieces pop_type (void);
extern int pop_type_int (void);
-extern int length_of_subexp (struct expression *, int);
+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 dump_subexp (struct expression *, struct ui_file *, int);
(struct objfile *objfile, void *data),
void *data);
-extern char *op_name_standard (enum exp_opcode);
+extern const char *op_name_standard (enum exp_opcode);
extern struct type *follow_types (struct type *);
/* During parsing of a C expression, the pointer to the next character
is in this variable. */
-extern char *lexptr;
+extern const char *lexptr;
/* After a token has been recognized, this variable points to it.
Currently used only for error reporting. */
-extern char *prev_lexptr;
+extern const char *prev_lexptr;
/* Current depth in parentheses within the expression. */
struct op_print
{
- char *string;
+ const char *string;
enum exp_opcode opcode;
/* Precedence of operator. These values are used only by comparisons. */
enum precedence precedence;
the number of subexpressions it takes. */
void (*operator_length) (const struct expression*, int, int*, int *);
- /* Call TYPE_FUNC and OBJFILE_FUNC for any TYPE and OBJFILE found being
- referenced by the single operator of EXP at position POS. Operator
- parameters are located at positive (POS + number) offsets in EXP.
- The functions should never be called with NULL TYPE or NULL OBJFILE.
- Functions should get passed an arbitrary caller supplied DATA pointer.
- If any of the functions returns non-zero value then (any other) non-zero
- value should be immediately returned to the caller. Otherwise zero
- should be returned. */
+ /* Call OBJFILE_FUNC for any objfile found being referenced by the
+ single operator of EXP at position POS. Operator parameters are
+ located at positive (POS + number) offsets in EXP. OBJFILE_FUNC
+ should never be called with NULL OBJFILE. OBJFILE_FUNC should
+ get passed an arbitrary caller supplied DATA pointer. If it
+ returns non-zero value then (any other) non-zero value should be
+ immediately returned to the caller. Otherwise zero should be
+ returned. */
int (*operator_check) (struct expression *exp, int pos,
int (*objfile_func) (struct objfile *objfile,
void *data),
void *data);
- /* Name of this operator for dumping purposes. */
- char *(*op_name) (enum exp_opcode);
+ /* 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). */
+ const 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
extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile);
+extern void mark_completion_tag (enum type_code, const char *ptr,
+ int length);
+
+/* Reallocate the `expout' pointer inside PS so that it can accommodate
+ at least LENELT expression elements. This function does nothing if
+ there is enough room for the elements. */
+
+extern void increase_expout_size (struct parser_state *ps, size_t lenelt);
+
#endif /* PARSER_DEFS_H */
+
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