* parser-defs.h (type_stack, type_stack_size, type_stack_depth):

[deliverable/binutils-gdb.git] / gdb / parser-defs.h

diff --git a/gdb/parser-defs.h b/gdb/parser-defs.h
index c57511a2c9f4a0c95c023f5f959d7150bf2ec4f0..de283d04fbd9e569ebfaf048fc1c1260282260a9 100644 (file)
--- a/gdb/parser-defs.h
+++ b/gdb/parser-defs.h
@@ -1,65 +1,92 @@
 /* Parser definitions for GDB.
 /* Parser definitions for GDB.

-   Copyright (C) 1986, 1989, 1990, 1991 Free Software Foundation, Inc.
+
+   Copyright (C) 1986, 1989-2000, 2002, 2007-2012 Free Software
+   Foundation, Inc.
+

    Modified from expread.y by the Department of Computer Science at the
    State University of New York at Buffalo.
 
    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
 
 
 #if !defined (PARSER_DEFS_H)
 #define PARSER_DEFS_H 1
 

-struct std_regs {
-       char *name;
-       int regnum;
-};
+#include "doublest.h"
+
+struct block;
+
+extern int parser_debug;

 
 

-extern struct std_regs std_regs[];
-extern unsigned num_std_regs;
+extern struct expression *expout;
+extern int expout_size;
+extern int expout_ptr;

 
 

-struct expression *expout;
-int expout_size;
-int expout_ptr;
+#define parse_gdbarch (expout->gdbarch)
+#define parse_language (expout->language_defn)

 
 /* If this is nonzero, this block is used as the lexical context
    for symbol names.  */
 
 
 /* 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
 
 /* The innermost context required by the stack and register variables

-   we've encountered so far. */
-struct block *innermost_block;
+   we've encountered so far.  */
+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.  */
 
 /* 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
 
 /* 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
   {
 
 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.  */
+    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;
     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;
   };
 
     int length;
   };
 

+struct stoken_vector
+  {
+    int len;
+    struct typed_stoken *tokens;
+  };
+

 struct ttype
   {
     struct stoken stoken;
 struct ttype
   {
     struct stoken stoken;


@@ -73,89 +100,165 @@ struct symtoken
     int is_a_field_of_this;
   };
 
     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
 /* 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.  */
 /* 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
+  {
+    enum type_pieces piece;
+    int int_val;
+  };
+
+/* 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;

 };
 };

-union type_stack_elt *type_stack;
-int type_stack_depth, type_stack_size;

 
 

-extern void
-write_exp_elt PARAMS ((union exp_element));
+/* 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
-write_exp_elt_opcode PARAMS ((enum exp_opcode));
+extern void initialize_expout (int, const struct language_defn *,
+                              struct gdbarch *);

 
 

-extern void
-write_exp_elt_sym PARAMS ((struct symbol *));
+/* 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
-write_exp_elt_longcst PARAMS ((LONGEST));
+extern void reallocate_expout (void);

 
 

-extern void
-write_exp_elt_dblcst PARAMS ((double));
+/* 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 void
-write_exp_elt_type PARAMS ((struct type *));
+extern int prefixify_expression (struct expression *expr);

 
 

-extern void
-write_exp_elt_intern PARAMS ((struct internalvar *));
+extern void write_exp_elt_opcode (enum exp_opcode);

 
 

-extern void
-write_exp_string PARAMS ((struct stoken));
+extern void write_exp_elt_sym (struct symbol *);

 
 

-extern void
-write_exp_bitstring PARAMS ((struct stoken));
+extern void write_exp_elt_longcst (LONGEST);

 
 

-extern void
-start_arglist PARAMS ((void));
+extern void write_exp_elt_dblcst (DOUBLEST);

 
 

-extern int
-end_arglist PARAMS ((void));
+extern void write_exp_elt_decfloatcst (gdb_byte *);

 
 

-extern char *
-copy_name PARAMS ((struct stoken));
+extern void write_exp_elt_type (struct type *);

 
 

-extern void 
-push_type PARAMS ((enum type_pieces));
+extern void write_exp_elt_intern (struct internalvar *);

 
 

-extern void
-push_type_int PARAMS ((int));
+extern void write_exp_string (struct stoken);

 
 

-extern enum type_pieces 
-pop_type PARAMS ((void));
+void write_exp_string_vector (int type, struct stoken_vector *vec);

 
 

-extern int
-pop_type_int PARAMS ((void));
+extern void write_exp_bitstring (struct stoken);

 
 

-/* During parsing of a C expression, the pointer to the next character
-   is in this variable.  */
+extern void write_exp_elt_block (struct block *);
+
+extern void write_exp_elt_objfile (struct objfile *objfile);
+
+extern void write_exp_msymbol (struct minimal_symbol *);
+
+extern void write_dollar_variable (struct stoken str);
+
+extern void mark_struct_expression (void);
+
+extern char *find_template_name_end (char *);
+
+extern void start_arglist (void);
+
+extern int end_arglist (void);

 
 

-char *lexptr;
+extern char *copy_name (struct stoken);

 
 

-/* Tokens that refer to names do so with explicit pointer and length,
-   so they can share the storage that lexptr is parsing.
+extern void insert_type (enum type_pieces);

 
 

-   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.
+extern void push_type (enum type_pieces);

 
 

-   namecopy is allocated once, guaranteed big enough, for each parsing.  */
+extern void push_type_int (int);

 
 

-char *namecopy;
+extern void insert_type_address_space (char *);
+
+extern enum type_pieces pop_type (void);
+
+extern int pop_type_int (void);
+
+extern int length_of_subexp (struct expression *, int);
+
+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 (const struct expression *, int, int *, int *);
+
+extern void operator_length_standard (const 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);
+
+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;
+
+/* After a token has been recognized, this variable points to it.
+   Currently used only for error reporting.  */
+extern char *prev_lexptr;

 
 /* Current depth in parentheses within the expression.  */
 
 
 /* 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).  */
 
 
 /* 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.  */
 \f
 /* These codes indicate operator precedences for expression printing,
    least tightly binding first.  */


@@ -166,21 +269,86 @@ int comma_terminates;
    they are used as the "surrounding precedence" to force
    various kinds of things to be parenthesized.  */
 enum precedence
    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
 
 /* 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;
-};
+  {
+    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) (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.  */
+    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 *, ...) ATTRIBUTE_PRINTF (2, 3);
+
+extern int exp_uses_objfile (struct expression *exp, struct objfile *objfile);

 
 

-#endif /* PARSER_DEFS_H */
+#endif /* PARSER_DEFS_H */