Optimize the performance of the group_setup function.

[deliverable/binutils-gdb.git] / gdb / expression.h

diff --git a/gdb/expression.h b/gdb/expression.h
index 6b96b12a78386dae2d0836a0537d57aa83f8fa74..a783ea5fef23f4b20714a7d1e7a401035db9bc9d 100644 (file)
--- a/gdb/expression.h
+++ b/gdb/expression.h
@@ -1,6 +1,6 @@
 /* Definitions for expressions stored in reversed prefix form, for GDB.
 
-   Copyright (C) 1986-2013 Free Software Foundation, Inc.
+   Copyright (C) 1986-2018 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -22,7 +22,6 @@
 
 
 #include "symtab.h"            /* Needed for "struct block" type.  */
-#include "doublest.h"          /* Needed for DOUBLEST.  */
 
 
 /* Definitions for saved C expressions.  */
@@ -64,9 +63,9 @@ union exp_element
   {
     enum exp_opcode opcode;
     struct symbol *symbol;
+    struct minimal_symbol *msymbol;
     LONGEST longconst;
-    DOUBLEST doubleconst;
-    gdb_byte decfloatconst[16];
+    gdb_byte floatconst[16];
     /* Really sizeof (union exp_element) characters (or less for the last
        element of a string).  */
     char string;
@@ -85,6 +84,8 @@ struct expression
     union exp_element elts[1];
   };
 
+typedef gdb::unique_xmalloc_ptr<expression> expression_up;
+
 /* Macros for converting between number of expression elements and bytes
    to store that many expression elements.  */
 
@@ -95,13 +96,16 @@ struct expression
 
 /* From parse.c */
 
-extern struct expression *parse_expression (const char *);
+extern expression_up parse_expression (const char *);
+
+extern expression_up parse_expression_with_language (const char *string,
+                                                    enum language lang);
 
 extern struct type *parse_expression_for_completion (const char *, char **,
                                                     enum type_code *);
 
-extern struct expression *parse_exp_1 (const char **, CORE_ADDR pc,
-                                      const struct block *, int);
+extern expression_up parse_exp_1 (const char **, CORE_ADDR pc,
+                                 const struct block *, int);
 
 /* For use by parsers; set if we want to parse an expression and
    attempt completion.  */
@@ -128,7 +132,10 @@ enum noside
                                   type (inaccuracy: anything that is
                                   listed as being in a register in
                                   the function in which it was
-                                  declared will be lval_register).  */
+                                  declared will be lval_register).
+                                  Ideally this would not even read
+                                  target memory, but currently it
+                                  does in many situations.  */
   };
 
 extern struct value *evaluate_subexp_standard
@@ -138,12 +145,25 @@ extern struct value *evaluate_subexp_standard
 
 extern void print_expression (struct expression *, struct ui_file *);
 
-extern char *op_name (struct expression *exp, enum exp_opcode opcode);
+extern const char *op_name (struct expression *exp, enum exp_opcode opcode);
 
-extern char *op_string (enum exp_opcode);
+extern const char *op_string (enum exp_opcode);
 
 extern void dump_raw_expression (struct expression *,
-                                struct ui_file *, char *);
+                                struct ui_file *, const char *);
 extern void dump_prefix_expression (struct expression *, struct ui_file *);
 
+/* In an OP_RANGE expression, either bound could be empty, indicating
+   that its value is by default that of the corresponding bound of the
+   array or string.  So we have four sorts of subrange.  This
+   enumeration type is to identify this.  */
+   
+enum range_type
+  {
+    BOTH_BOUND_DEFAULT,                /* "(:)"  */
+    LOW_BOUND_DEFAULT,         /* "(:high)"  */
+    HIGH_BOUND_DEFAULT,                /* "(low:)"  */
+    NONE_BOUND_DEFAULT         /* "(low:high)"  */
+  };
+
 #endif /* !defined (EXPRESSION_H) */