X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=gdb%2Fparser-defs.h;h=ed022ad1c89db94d6ea7a0a3b8d785a2e4d91d08;hb=d7561cbbf27a8ff771f85baf6696aa7645250484;hp=2c4b7559daff2f12d70147816f217fb71a8dd465;hpb=0fb0cc7590113e9b459dfcc48dc71c9d419d9580;p=deliverable%2Fbinutils-gdb.git diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h index 2c4b7559da..ed022ad1c8 100644 --- a/gdb/parser-defs.h +++ b/gdb/parser-defs.h @@ -1,7 +1,6 @@ /* Parser definitions for GDB. - Copyright (C) 1986, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, - 1998, 1999, 2000, 2002, 2007, 2008, 2009 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. @@ -25,9 +24,13 @@ #define PARSER_DEFS_H 1 #include "doublest.h" +#include "vec.h" +#include "expression.h" struct block; +extern int parser_debug; + extern struct expression *expout; extern int expout_size; extern int expout_ptr; @@ -38,7 +41,7 @@ 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; +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 @@ -47,28 +50,44 @@ extern struct block *expression_context_block; extern CORE_ADDR expression_context_pc; /* The innermost context required by the stack and register variables - we've encountered so far. */ -extern struct block *innermost_block; + we've encountered so far. */ +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; /* A string token, either a char-string or bit-string. Char-strings are - used, for example, for the names of symbols. */ + used, for example, for the names of symbols. */ struct stoken { - /* Pointer to first byte of char-string or first bit of bit-string */ + /* Pointer to first byte of char-string or first bit of bit-string. */ + const char *ptr; + /* Length of string in bytes for char-string or bits for bit-string. */ + int length; + }; + +struct typed_stoken + { + /* A language-specific type field. */ + int type; + /* 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 */ + /* Length of string in bytes for char-string or bits for bit-string. */ int length; }; +struct stoken_vector + { + int len; + struct typed_stoken *tokens; + }; + struct ttype { struct stoken stoken; @@ -89,6 +108,8 @@ struct objc_class_str 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. */ @@ -98,21 +119,57 @@ enum type_pieces 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; -extern void write_exp_elt (union exp_element); +/* 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); @@ -130,19 +187,21 @@ extern void write_exp_elt_intern (struct internalvar *); extern void write_exp_string (struct stoken); +void write_exp_string_vector (int type, struct stoken_vector *vec); + 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 void mark_struct_expression (void); -extern char *find_template_name_end (char *); +extern const char *find_template_name_end (const char *); extern void start_arglist (void); @@ -150,16 +209,29 @@ extern int end_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 (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); @@ -167,9 +239,15 @@ extern int dump_subexp (struct expression *, struct ui_file *, int); extern int dump_subexp_body_standard (struct expression *, struct ui_file *, int); -extern void operator_length (struct expression *, int, int *, int *); +extern void operator_length (const struct expression *, int, int *, int *); + +extern void operator_length_standard (const struct expression *, int, int *, + int *); -extern void operator_length_standard (struct expression *, int, int *, int *); +extern int operator_check_standard (struct expression *exp, int pos, + int (*objfile_func) + (struct objfile *objfile, void *data), + void *data); extern char *op_name_standard (enum exp_opcode); @@ -177,25 +255,20 @@ extern struct type *follow_types (struct type *); extern void null_post_parser (struct expression **, int); +extern int parse_float (const char *p, int len, DOUBLEST *d, + const char **suffix); + +extern int parse_c_float (struct gdbarch *gdbarch, const char *p, int len, + DOUBLEST *d, struct type **t); + /* 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. +/* 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. - - 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; +extern const char *prev_lexptr; /* Current depth in parentheses within the expression. */ @@ -232,7 +305,7 @@ struct op_print enum precedence precedence; /* For a binary operator: 1 iff right associate. - For a unary operator: 1 iff postfix. */ + For a unary operator: 1 iff postfix. */ int right_assoc; }; @@ -247,9 +320,25 @@ struct exp_descriptor /* 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. */ + 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. */ + 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. + 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 @@ -279,6 +368,12 @@ extern void print_subexp_standard (struct expression *, int *, /* 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); +extern void parser_fprintf (FILE *, const char *, ...) ATTRIBUTE_PRINTF (2, 3); + +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 */ +