* dwarf2read.c (dwarf_decode_lines): Ignore rows where is_stmt is 0.

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

diff --git a/gdb/expression.h b/gdb/expression.h
index 34e002f3a281dc58cdd6ab9e352bab902111f455..12163e3949eaf9a271dcce9df7e3dc890fbbe405 100644 (file)
--- a/gdb/expression.h
+++ b/gdb/expression.h
@@ -1,11 +1,13 @@
 /* Definitions for expressions stored in reversed prefix form, for GDB.
 /* Definitions for expressions stored in reversed prefix form, for GDB.

-   Copyright 1986, 1989, 1992, 1994, 2000 Free Software Foundation, Inc.
+
+   Copyright (C) 1986, 1989, 1992, 1994, 2000, 2003, 2005, 2007, 2008, 2009
+   Free Software Foundation, Inc.

 
    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
 
    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
+   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,
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,


@@ -14,9 +16,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    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., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

 
 #if !defined (EXPRESSION_H)
 #define EXPRESSION_H 1
 
 #if !defined (EXPRESSION_H)
 #define EXPRESSION_H 1


@@ -109,11 +109,11 @@ enum exp_opcode
        the second operand with itself that many times. */
     BINOP_CONCAT,
 
        the second operand with itself that many times. */
     BINOP_CONCAT,
 

-    /* For (OBSOLETE) Chill (OBSOLETE) and Pascal. */
+    /* For (the deleted) Chill and Pascal. */

     BINOP_IN,                  /* Returns 1 iff ARG1 IN ARG2. */
 
     BINOP_IN,                  /* Returns 1 iff ARG1 IN ARG2. */
 

-    /* This is the "colon operator" used various places in (OBSOLETE)
-       Chill (OBSOLETE). */
+    /* This is the "colon operator" used various places in (the
+       deleted) Chill. */

     BINOP_RANGE,
 
     /* This must be the highest BINOP_ value, for expprint.c.  */
     BINOP_RANGE,
 
     /* This must be the highest BINOP_ value, for expprint.c.  */


@@ -122,13 +122,13 @@ enum exp_opcode
     /* Operates on three values computed by following subexpressions.  */
     TERNOP_COND,               /* ?: */
 
     /* Operates on three values computed by following subexpressions.  */
     TERNOP_COND,               /* ?: */
 

-    /* A sub-string/sub-array.  (OBSOLETE) Chill (OBSOLETE) syntax:
+    /* A sub-string/sub-array.  (the deleted) Chill syntax:

        OP1(OP2:OP3).  Return elements OP2 through OP3 of OP1.  */
     TERNOP_SLICE,
 
        OP1(OP2:OP3).  Return elements OP2 through OP3 of OP1.  */
     TERNOP_SLICE,
 

-    /* A sub-string/sub-array.  (OBSOLETE) Chill (OBSOLETE) syntax:
-       OP1(OP2 UP OP3).  Return OP3 elements of OP1, starting with
-       element OP2. */
+    /* A sub-string/sub-array.  (The deleted) Chill syntax: OP1(OP2 UP
+       OP3).  Return OP3 elements of OP1, starting with element
+       OP2. */

     TERNOP_SLICE_COUNT,
 
     /* Multidimensional subscript operator, such as Modula-2 x[a,b,...].
     TERNOP_SLICE_COUNT,
 
     /* Multidimensional subscript operator, such as Modula-2 x[a,b,...].


@@ -164,9 +164,8 @@ enum exp_opcode
        With another OP_LAST at the end, this makes three exp_elements.  */
     OP_LAST,
 
        With another OP_LAST at the end, this makes three exp_elements.  */
     OP_LAST,
 

-    /* OP_REGISTER is followed by an integer in the next exp_element.
-       This is the number of a register to fetch (as an int).
-       With another OP_REGISTER at the end, this makes three exp_elements.  */
+    /* OP_REGISTER is followed by a string in the next exp_element.
+       This is the name of a register to fetch.  */

     OP_REGISTER,
 
     /* OP_INTERNALVAR is followed by an internalvar ptr in the next exp_element.
     OP_REGISTER,
 
     /* OP_INTERNALVAR is followed by an internalvar ptr in the next exp_element.


@@ -181,15 +180,22 @@ enum exp_opcode
        making three exp_elements.  */
     OP_FUNCALL,
 
        making three exp_elements.  */
     OP_FUNCALL,
 

+    /* OP_OBJC_MSGCALL is followed by a string in the next exp_element and then an
+       integer.  The string is the selector string.  The integer is the number
+       of arguments to the message call.  That many plus one values are used, 
+       the first one being the object pointer.  This is an Objective C message */
+    OP_OBJC_MSGCALL,
+

     /* This is EXACTLY like OP_FUNCALL but is semantically different.  
        In F77, array subscript expressions, substring expressions
        and function calls are  all exactly the same syntactically. They may 
     /* This is EXACTLY like OP_FUNCALL but is semantically different.  
        In F77, array subscript expressions, substring expressions
        and function calls are  all exactly the same syntactically. They may 

-       only be dismabiguated at runtime.  Thus this operator, which 
+       only be disambiguated at runtime.  Thus this operator, which 

        indicates that we have found something of the form <name> ( <stuff> ) */
     OP_F77_UNDETERMINED_ARGLIST,
 
        indicates that we have found something of the form <name> ( <stuff> ) */
     OP_F77_UNDETERMINED_ARGLIST,
 

-    /* The following OP is a special one, it introduces a F77 complex
-       literal. It is followed by exactly two args that are doubles.  */
+    /* OP_COMPLEX takes a type in the following element, followed by another
+       OP_COMPLEX, making three exp_elements.  It is followed by two double
+       args, and converts them into a complex number of the given type. */

     OP_COMPLEX,
 
     /* OP_STRING represents a string constant.
     OP_COMPLEX,
 
     /* OP_STRING represents a string constant.


@@ -226,6 +232,13 @@ enum exp_opcode
        following subexpression.  */
     UNOP_MEMVAL,
 
        following subexpression.  */
     UNOP_MEMVAL,
 

+    /* UNOP_MEMVAL_TLS is followed by a `struct objfile' pointer in the next
+       exp_element and a type pointer in the following exp_element.
+       With another UNOP_MEMVAL_TLS at the end, this makes four exp_elements.
+       It casts the contents of the word offsetted by the value of the
+       following subexpression from the TLS specified by `struct objfile'.  */
+    UNOP_MEMVAL_TLS,
+

     /* UNOP_... operate on one value from a following subexpression
        and replace it with a result.  They take no immediate arguments.  */
 
     /* UNOP_... operate on one value from a following subexpression
        and replace it with a result.  They take no immediate arguments.  */
 


@@ -253,7 +266,7 @@ enum exp_opcode
     UNOP_ODD,
     UNOP_TRUNC,
 
     UNOP_ODD,
     UNOP_TRUNC,
 

-    /* (OBSOLETE) Chill (OBSOLETE) builtin functions. */
+    /* (The deleted) Chill builtin functions.  */

     UNOP_LOWER, UNOP_UPPER, UNOP_LENGTH, UNOP_CARD, UNOP_CHMAX, UNOP_CHMIN,
 
     OP_BOOL,                   /* Modula-2 builtin BOOLEAN type */
     UNOP_LOWER, UNOP_UPPER, UNOP_LENGTH, UNOP_CARD, UNOP_CHMAX, UNOP_CHMIN,
 
     OP_BOOL,                   /* Modula-2 builtin BOOLEAN type */


@@ -273,25 +286,31 @@ enum exp_opcode
     STRUCTOP_STRUCT,
     STRUCTOP_PTR,
 
     STRUCTOP_STRUCT,
     STRUCTOP_PTR,
 

-    /* C++ */
-    /* OP_THIS is just a placeholder for the class instance variable.
+    /* C++: OP_THIS is just a placeholder for the class instance variable.

        It just comes in a tight (OP_THIS, OP_THIS) pair.  */
     OP_THIS,
 
        It just comes in a tight (OP_THIS, OP_THIS) pair.  */
     OP_THIS,
 

+    /* Objective-C: OP_OBJC_SELF is just a placeholder for the class instance
+       variable.  It just comes in a tight (OP_OBJC_SELF, OP_OBJC_SELF) pair.  */
+    OP_OBJC_SELF,
+
+    /* Objective C: "@selector" pseudo-operator */
+    OP_OBJC_SELECTOR,
+

     /* OP_SCOPE surrounds a type name and a field name.  The type
        name is encoded as one element, but the field name stays as
        a string, which, of course, is variable length.  */
     OP_SCOPE,
 
     /* Used to represent named structure field values in brace
     /* OP_SCOPE surrounds a type name and a field name.  The type
        name is encoded as one element, but the field name stays as
        a string, which, of course, is variable length.  */
     OP_SCOPE,
 
     /* Used to represent named structure field values in brace

-       initializers (or tuples as they are called in (OBSOLETE) Chill
-       (OBSOLETE)).
+       initializers (or tuples as they are called in (the deleted)
+       Chill).

 
 

-       The gcc C syntax is NAME:VALUE or .NAME=VALUE, the (OBSOLETE)
-       Chill (OBSOLETE) syntax is .NAME:VALUE.  Multiple labels (as in
-       the (OBSOLETE) Chill (OBSOLETE) syntax .NAME1,.NAME2:VALUE) is
+       The gcc C syntax is NAME:VALUE or .NAME=VALUE, the (the
+       deleted) Chill syntax is .NAME:VALUE.  Multiple labels (as in
+       the (the deleted) Chill syntax .NAME1,.NAME2:VALUE) is

        represented as if it were .NAME1:(.NAME2:VALUE) (though that is
        represented as if it were .NAME1:(.NAME2:VALUE) (though that is

-       not valid (OBSOLETE) Chill (OBSOLETE) syntax).
+       not valid (the deleted) Chill syntax).

 
        The NAME is represented as for STRUCTOP_STRUCT;  VALUE follows. */
     OP_LABELED,
 
        The NAME is represented as for STRUCTOP_STRUCT;  VALUE follows. */
     OP_LABELED,


@@ -304,8 +323,36 @@ enum exp_opcode
     /* An un-looked-up identifier. */
     OP_NAME,
 
     /* An un-looked-up identifier. */
     OP_NAME,
 

-    /* An unparsed expression.  Used for Scheme (for now at least) */
-    OP_EXPRSTRING
+    /* An Objective C Foundation Class NSString constant */
+    OP_OBJC_NSSTRING,
+
+    /* A F90 array range operator (for "exp:exp", "exp:", ":exp" and ":").  */
+    OP_F90_RANGE,
+
+    /* OP_DECFLOAT is followed by a type pointer in the next exp_element
+       and a dec long constant value in the following exp_element.
+       Then comes another OP_DECFLOAT.  */
+    OP_DECFLOAT,
+
+     /* First extension operator.  Individual language modules define
+        extra operators they need as constants with values 
+        OP_LANGUAGE_SPECIFIC0 + k, for k >= 0, using a separate 
+        enumerated type definition:
+           enum foo_extension_operator {
+             BINOP_MOGRIFY = OP_EXTENDED0,
+            BINOP_FROB,
+            ...
+           };      */
+    OP_EXTENDED0,
+  
+    /* Last possible extension operator.  Defined to provide an
+       explicit and finite number of extended operators. */
+    OP_EXTENDED_LAST = 0xff
+    /* NOTE: Eventually, we expect to convert to an object-oriented 
+       formulation for expression operators that does away with the
+       need for these extension operators, and indeed for this
+       entire enumeration type.  Therefore, consider the OP_EXTENDED
+       definitions to be a temporary measure. */

   };
 
 union exp_element
   };
 
 union exp_element


@@ -314,17 +361,20 @@ union exp_element
     struct symbol *symbol;
     LONGEST longconst;
     DOUBLEST doubleconst;
     struct symbol *symbol;
     LONGEST longconst;
     DOUBLEST doubleconst;

+    gdb_byte decfloatconst[16];

     /* Really sizeof (union exp_element) characters (or less for the last
        element of a string).  */
     char string;
     struct type *type;
     struct internalvar *internalvar;
     struct block *block;
     /* Really sizeof (union exp_element) characters (or less for the last
        element of a string).  */
     char string;
     struct type *type;
     struct internalvar *internalvar;
     struct block *block;

+    struct objfile *objfile;

   };
 
 struct expression
   {
     const struct language_defn *language_defn; /* language it was entered in */
   };
 
 struct expression
   {
     const struct language_defn *language_defn; /* language it was entered in */

+    struct gdbarch *gdbarch;  /* architecture it was parsed in */

     int nelts;
     union exp_element elts[1];
   };
     int nelts;
     union exp_element elts[1];
   };


@@ -341,8 +391,14 @@ struct expression
 
 extern struct expression *parse_expression (char *);
 
 
 extern struct expression *parse_expression (char *);
 

+extern struct type *parse_field_expression (char *, char **);
+

 extern struct expression *parse_exp_1 (char **, struct block *, int);
 
 extern struct expression *parse_exp_1 (char **, struct block *, int);
 

+/* For use by parsers; set if we want to parse an expression and
+   attempt to complete a field name.  */
+extern int in_parse_field;
+

 /* The innermost context required by the stack and register variables
    we've encountered so far.  To use this, set it to NULL, then call
    parse_<whatever>, then look at it.  */
 /* The innermost context required by the stack and register variables
    we've encountered so far.  To use this, set it to NULL, then call
    parse_<whatever>, then look at it.  */


@@ -376,11 +432,7 @@ extern void print_expression (struct expression *, struct ui_file *);
 
 extern char *op_string (enum exp_opcode);
 
 
 extern char *op_string (enum exp_opcode);
 

-extern void dump_prefix_expression (struct expression *,
-                                   struct ui_file *,
-                                   char *);
-extern void dump_postfix_expression (struct expression *,
-                                    struct ui_file *,
-                                    char *);
+extern void dump_raw_expression (struct expression *, struct ui_file *, char *);
+extern void dump_prefix_expression (struct expression *, struct ui_file *);

 
 #endif /* !defined (EXPRESSION_H) */
 
 #endif /* !defined (EXPRESSION_H) */