change delegation for to_read_description

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

diff --git a/gdb/language.h b/gdb/language.h
index aaefb036383a059b294eed6bca4712ddd2e50946..ded595f0040da14c50d0927ca1ec122714aeefe4 100644 (file)
--- a/gdb/language.h
+++ b/gdb/language.h
@@ -1,7 +1,6 @@
 /* Source-language-related definitions for GDB.
 
 /* Source-language-related definitions for GDB.
 

-   Copyright (C) 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2003, 2004,
-   2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+   Copyright (C) 1991-2014 Free Software Foundation, Inc.

 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.
 
    Contributed by the Department of Computer Science at the State University
    of New York at Buffalo.


@@ -24,15 +23,19 @@
 #if !defined (LANGUAGE_H)
 #define LANGUAGE_H 1
 
 #if !defined (LANGUAGE_H)
 #define LANGUAGE_H 1
 

-/* Forward decls for prototypes */
+#include "symtab.h"
+
+/* Forward decls for prototypes.  */

 struct value;
 struct objfile;
 struct frame_info;
 struct expression;
 struct ui_file;
 struct value_print_options;
 struct value;
 struct objfile;
 struct frame_info;
 struct expression;
 struct ui_file;
 struct value_print_options;

+struct type_print_options;
+struct lang_varobj_ops;

 
 

-#define MAX_FORTRAN_DIMS  7    /* Maximum number of F77 array dims */
+#define MAX_FORTRAN_DIMS  7    /* Maximum number of F77 array dims.  */

 
 /* range_mode ==
    range_mode_auto:   range_check set automatically to default of language.
 
 /* range_mode ==
    range_mode_auto:   range_check set automatically to default of language.


@@ -55,29 +58,8 @@ extern enum range_check
   }
 range_check;
 
   }
 range_check;
 

-/* type_mode ==
-   type_mode_auto:   type_check set automatically to default of language
-   type_mode_manual: type_check set manually by user. */
-
-extern enum type_mode
-  {
-    type_mode_auto, type_mode_manual
-  }
-type_mode;
-
-/* type_check ==
-   type_check_on:    Types are checked in GDB expressions, producing errors.
-   type_check_warn:  Types are checked, producing warnings.
-   type_check_off:   Types are not checked in GDB expressions.  */
-
-extern enum type_check
-  {
-    type_check_off, type_check_warn, type_check_on
-  }
-type_check;
-

 /* case_mode ==
 /* case_mode ==

-   case_mode_auto:   case_sensitivity set upon selection of scope 
+   case_mode_auto:   case_sensitivity set upon selection of scope.

    case_mode_manual: case_sensitivity set only by user.  */
 
 extern enum case_mode
    case_mode_manual: case_sensitivity set only by user.  */
 
 extern enum case_mode


@@ -87,8 +69,8 @@ extern enum case_mode
 case_mode;
 
 /* array_ordering ==
 case_mode;
 
 /* array_ordering ==

-   array_row_major:     Arrays are in row major order
-   array_column_major:  Arrays are in column major order.*/
+   array_row_major:     Arrays are in row major order.
+   array_column_major:  Arrays are in column major order.  */

 
 extern enum array_ordering
   {
 
 extern enum array_ordering
   {


@@ -98,8 +80,8 @@ array_ordering;
 
 
 /* case_sensitivity ==
 
 
 /* case_sensitivity ==

-   case_sensitive_on:   Case sensitivity in name matching is used
-   case_sensitive_off:  Case sensitivity in name matching is not used  */
+   case_sensitive_on:   Case sensitivity in name matching is used.
+   case_sensitive_off:  Case sensitivity in name matching is not used.  */

 
 extern enum case_sensitivity
   {
 
 extern enum case_sensitivity
   {


@@ -109,8 +91,8 @@ case_sensitivity;
 
 
 /* macro_expansion ==
 
 
 /* macro_expansion ==

-   macro_expansion_no:  No macro expansion is available
-   macro_expansion_c:   C-like macro expansion is available  */
+   macro_expansion_no:  No macro expansion is available.
+   macro_expansion_c:   C-like macro expansion is available.  */

 
 enum macro_expansion
   {
 
 enum macro_expansion
   {


@@ -127,7 +109,7 @@ struct language_arch_info
      expressions, regardless of whether the program being debugged
      actually defines such a type.  */
   struct type **primitive_type_vector;
      expressions, regardless of whether the program being debugged
      actually defines such a type.  */
   struct type **primitive_type_vector;

-  /* Type of elements of strings. */
+  /* Type of elements of strings.  */

   struct type *string_char_type;
 
   /* Symbol name of type to use as boolean type, if defined.  */
   struct type *string_char_type;
 
   /* Symbol name of type to use as boolean type, if defined.  */


@@ -136,45 +118,55 @@ struct language_arch_info
   struct type *bool_type_default;
 };
 
   struct type *bool_type_default;
 };
 

+/* A pointer to a function expected to return nonzero if
+   SYMBOL_SEARCH_NAME matches the given LOOKUP_NAME.
+
+   SYMBOL_SEARCH_NAME should be a symbol's "search" name.
+   LOOKUP_NAME should be the name of an entity after it has been
+   transformed for lookup.  */
+
+typedef int (*symbol_name_cmp_ftype) (const char *symbol_search_name,
+                                         const char *lookup_name);
+

 /* Structure tying together assorted information about a language.  */
 
 struct language_defn
   {
 /* Structure tying together assorted information about a language.  */
 
 struct language_defn
   {

-    /* Name of the language */
+    /* Name of the language.  */

 
 

-    char *la_name;
+    const char *la_name;

 
 

-    /* its symtab language-enum (defs.h) */
+    /* Natural or official name of the language.  */

 
 

-    enum language la_language;
+    const char *la_natural_name;

 
 

-    /* Default range checking */
+    /* its symtab language-enum (defs.h).  */

 
 

-    enum range_check la_range_check;
+    enum language la_language;

 
 

-    /* Default type checking */
+    /* Default range checking.  */

 
 

-    enum type_check la_type_check;
+    enum range_check la_range_check;

 
 

-    /* Default case sensitivity */
+    /* Default case sensitivity.  */

     enum case_sensitivity la_case_sensitivity;
 
     enum case_sensitivity la_case_sensitivity;
 

-    /* Multi-dimensional array ordering */
+    /* Multi-dimensional array ordering.  */

     enum array_ordering la_array_ordering;
 
     /* Style of macro expansion, if any, supported by this language.  */
     enum macro_expansion la_macro_expansion;
 
     /* Definitions related to expression printing, prefixifying, and
     enum array_ordering la_array_ordering;
 
     /* Style of macro expansion, if any, supported by this language.  */
     enum macro_expansion la_macro_expansion;
 
     /* Definitions related to expression printing, prefixifying, and

-       dumping */
+       dumping.  */

 
     const struct exp_descriptor *la_exp_desc;
 
 
     const struct exp_descriptor *la_exp_desc;
 

-    /* Parser function. */
+    /* Parser function.  */

 
     int (*la_parser) (void);
 
 
     int (*la_parser) (void);
 

-    /* Parser error function */
+    /* Parser error function.  */

 
     void (*la_error) (char *);
 
 
     void (*la_error) (char *);
 


@@ -186,7 +178,8 @@ struct language_defn
 
     void (*la_post_parser) (struct expression ** expp, int void_context_p);
 
 
     void (*la_post_parser) (struct expression ** expp, int void_context_p);
 

-    void (*la_printchar) (int ch, struct type *chtype, struct ui_file * stream);
+    void (*la_printchar) (int ch, struct type *chtype,
+                         struct ui_file * stream);

 
     void (*la_printstr) (struct ui_file * stream, struct type *elttype,
                         const gdb_byte *string, unsigned int length,
 
     void (*la_printstr) (struct ui_file * stream, struct type *elttype,
                         const gdb_byte *string, unsigned int length,


@@ -196,10 +189,10 @@ struct language_defn
     void (*la_emitchar) (int ch, struct type *chtype,
                         struct ui_file * stream, int quoter);
 
     void (*la_emitchar) (int ch, struct type *chtype,
                         struct ui_file * stream, int quoter);
 

-    /* Print a type using syntax appropriate for this language. */
+    /* Print a type using syntax appropriate for this language.  */

 
 

-    void (*la_print_type) (struct type *, char *, struct ui_file *, int,
-                          int);
+    void (*la_print_type) (struct type *, const char *, struct ui_file *, int,
+                          int, const struct type_print_options *);

 
     /* Print a typedef using syntax appropriate for this language.
        TYPE is the underlying type.  NEW_SYMBOL is the symbol naming
 
     /* Print a typedef using syntax appropriate for this language.
        TYPE is the underlying type.  NEW_SYMBOL is the symbol naming


@@ -208,16 +201,47 @@ struct language_defn
     void (*la_print_typedef) (struct type *type, struct symbol *new_symbol,
                              struct ui_file *stream);
 
     void (*la_print_typedef) (struct type *type, struct symbol *new_symbol,
                              struct ui_file *stream);
 

-    /* Print a value using syntax appropriate for this language. */
+    /* Print a value using syntax appropriate for this language.
+       
+       TYPE is the type of the sub-object to be printed.

 
 

-    int (*la_val_print) (struct type *, const gdb_byte *, int, CORE_ADDR,
-                        struct ui_file *, int,
-                        const struct value_print_options *);
+       CONTENTS holds the bits of the value.  This holds the entire
+       enclosing object.
+
+       EMBEDDED_OFFSET is the offset into the outermost object of the
+       sub-object represented by TYPE.  This is the object which this
+       call should print.  Note that the enclosing type is not
+       available.
+
+       ADDRESS is the address in the inferior of the enclosing object.
+
+       STREAM is the stream on which the value is to be printed.
+
+       RECURSE is the recursion depth.  It is zero-based.
+
+       OPTIONS are the formatting options to be used when
+       printing.  */
+
+    void (*la_val_print) (struct type *type,
+                         const gdb_byte *contents,
+                         int embedded_offset, CORE_ADDR address,
+                         struct ui_file *stream, int recurse,
+                         const struct value *val,
+                         const struct value_print_options *options);

 
 

-    /* Print a top-level value using syntax appropriate for this language. */
+    /* Print a top-level value using syntax appropriate for this language.  */

 
 

-    int (*la_value_print) (struct value *, struct ui_file *,
-                          const struct value_print_options *);
+    void (*la_value_print) (struct value *, struct ui_file *,
+                           const struct value_print_options *);
+
+    /* Given a symbol VAR, and a stack frame id FRAME, read the value
+       of the variable an return (pointer to a) struct value containing
+       the value.
+
+       Throw an error if the variable cannot be found.  */
+
+    struct value *(*la_read_var_value) (struct symbol *var,
+                                       struct frame_info *frame);

 
     /* PC is possibly an unknown languages trampoline.
        If that PC falls in a trampoline belonging to this language,
 
     /* PC is possibly an unknown languages trampoline.
        If that PC falls in a trampoline belonging to this language,


@@ -237,7 +261,6 @@ struct language_defn
        variables.  */
 
     struct symbol *(*la_lookup_symbol_nonlocal) (const char *,
        variables.  */
 
     struct symbol *(*la_lookup_symbol_nonlocal) (const char *,

-                                                const char *,

                                                 const struct block *,
                                                 const domain_enum);
 
                                                 const struct block *,
                                                 const domain_enum);
 


@@ -250,25 +273,29 @@ struct language_defn
     /* Return class name of a mangled method name or NULL.  */
     char *(*la_class_name_from_physname) (const char *physname);
 
     /* Return class name of a mangled method name or NULL.  */
     char *(*la_class_name_from_physname) (const char *physname);
 

-    /* Table for printing expressions */
+    /* Table for printing expressions.  */

 
     const struct op_print *la_op_print_tab;
 
     /* Zero if the language has first-class arrays.  True if there are no
 
     const struct op_print *la_op_print_tab;
 
     /* Zero if the language has first-class arrays.  True if there are no

-       array values, and array objects decay to pointers, as in C. */
+       array values, and array objects decay to pointers, as in C.  */

 
     char c_style_arrays;
 
 
     char c_style_arrays;
 

-    /* Index to use for extracting the first element of a string. */
+    /* Index to use for extracting the first element of a string.  */

     char string_lower_bound;
 
     /* The list of characters forming word boundaries.  */
     char *(*la_word_break_characters) (void);
 
     char string_lower_bound;
 
     /* The list of characters forming word boundaries.  */
     char *(*la_word_break_characters) (void);
 

-    /* Should return a NULL terminated array of all symbols which
-       are possible completions for TEXT.  WORD is the entire command
-       on which the completion is being made.  */
-    char **(*la_make_symbol_completion_list) (char *text, char *word);
+    /* Should return a vector of all symbols which are possible
+       completions for TEXT.  WORD is the entire command on which the
+       completion is being made.  If CODE is TYPE_CODE_UNDEF, then all
+       symbols should be examined; otherwise, only STRUCT_DOMAIN
+       symbols whose type has a code of CODE should be matched.  */
+    VEC (char_ptr) *(*la_make_symbol_completion_list) (const char *text,
+                                                      const char *word,
+                                                      enum type_code code);

 
     /* The per-architecture (OS/ABI) language information.  */
     void (*la_language_arch_info) (struct gdbarch *,
 
     /* The per-architecture (OS/ABI) language information.  */
     void (*la_language_arch_info) (struct gdbarch *,


@@ -296,8 +323,39 @@ struct language_defn
     void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
                           struct type **chartype, const char **charset);
 
     void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
                           struct type **chartype, const char **charset);
 

-    /* Add fields above this point, so the magic number is always last. */
-    /* Magic number for compat checking */
+    /* Return a pointer to the function that should be used to match
+       a symbol name against LOOKUP_NAME. This is mostly for languages
+       such as Ada where the matching algorithm depends on LOOKUP_NAME.
+
+       This field may be NULL, in which case strcmp_iw will be used
+       to perform the matching.  */
+    symbol_name_cmp_ftype (*la_get_symbol_name_cmp) (const char *lookup_name);
+
+    /* Find all symbols in the current program space matching NAME in
+       DOMAIN, according to this language's rules.
+
+       The search is done in BLOCK only.
+       The caller is responsible for iterating up through superblocks
+       if desired.
+
+       For each one, call CALLBACK with the symbol and the DATA
+       argument.  If CALLBACK returns zero, the iteration ends at that
+       point.
+
+       This field may not be NULL.  If the language does not need any
+       special processing here, 'iterate_over_symbols' should be
+       used as the definition.  */
+    void (*la_iterate_over_symbols) (const struct block *block,
+                                    const char *name,
+                                    domain_enum domain,
+                                    symbol_found_callback_ftype *callback,
+                                    void *data);
+
+    /* Various operations on varobj.  */
+    const struct lang_varobj_ops *la_varobj_ops;
+
+    /* Add fields above this point, so the magic number is always last.  */
+    /* Magic number for compat checking.  */

 
     long la_magic;
 
 
     long la_magic;
 


@@ -353,17 +411,14 @@ struct type *language_lookup_primitive_type_by_name (const struct language_defn
 /* These macros define the behaviour of the expression 
    evaluator.  */
 
 /* These macros define the behaviour of the expression 
    evaluator.  */
 

-/* Should we strictly type check expressions? */
-#define STRICT_TYPE (type_check != type_check_off)
-
-/* Should we range check values against the domain of their type? */
+/* Should we range check values against the domain of their type?  */

 #define RANGE_CHECK (range_check != range_check_off)
 
 #define RANGE_CHECK (range_check != range_check_off)
 

-/* "cast" really means conversion */
-/* FIXME -- should be a setting in language_defn */
-#define CAST_IS_CONVERSION (current_language->la_language == language_c  || \
-                           current_language->la_language == language_cplus || \
-                           current_language->la_language == language_objc)
+/* "cast" really means conversion.  */
+/* FIXME -- should be a setting in language_defn.  */
+#define CAST_IS_CONVERSION(LANG) ((LANG)->la_language == language_c  || \
+                                 (LANG)->la_language == language_cplus || \
+                                 (LANG)->la_language == language_objc)

 
 extern void language_info (int);
 
 
 extern void language_info (int);
 


@@ -373,23 +428,23 @@ extern enum language set_language (enum language);
 /* This page contains functions that return things that are
    specific to languages.  Each of these functions is based on
    the current setting of working_lang, which the user sets
 /* This page contains functions that return things that are
    specific to languages.  Each of these functions is based on
    the current setting of working_lang, which the user sets

-   with the "set language" command. */
+   with the "set language" command.  */

 
 

-#define LA_PRINT_TYPE(type,varstring,stream,show,level) \
-  (current_language->la_print_type(type,varstring,stream,show,level))
+#define LA_PRINT_TYPE(type,varstring,stream,show,level,flags)          \
+  (current_language->la_print_type(type,varstring,stream,show,level,flags))

 
 #define LA_PRINT_TYPEDEF(type,new_symbol,stream) \
   (current_language->la_print_typedef(type,new_symbol,stream))
 
 
 #define LA_PRINT_TYPEDEF(type,new_symbol,stream) \
   (current_language->la_print_typedef(type,new_symbol,stream))
 

-#define LA_VAL_PRINT(type,valaddr,offset,addr,stream,recurse,options) \
+#define LA_VAL_PRINT(type,valaddr,offset,addr,stream,val,recurse,options) \

   (current_language->la_val_print(type,valaddr,offset,addr,stream, \
   (current_language->la_val_print(type,valaddr,offset,addr,stream, \

-                                 recurse,options))
+                                 val,recurse,options))

 #define LA_VALUE_PRINT(val,stream,options) \
   (current_language->la_value_print(val,stream,options))
 
 #define LA_PRINT_CHAR(ch, type, stream) \
   (current_language->la_printchar(ch, type, stream))
 #define LA_VALUE_PRINT(val,stream,options) \
   (current_language->la_value_print(val,stream,options))
 
 #define LA_PRINT_CHAR(ch, type, stream) \
   (current_language->la_printchar(ch, type, stream))

-#define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses,options) \
+#define LA_PRINT_STRING(stream, elttype, string, length, encoding, force_ellipses, options) \

   (current_language->la_printstr(stream, elttype, string, length, \
                                 encoding, force_ellipses,options))
 #define LA_EMIT_CHAR(ch, type, stream, quoter) \
   (current_language->la_printstr(stream, elttype, string, length, \
                                 encoding, force_ellipses,options))
 #define LA_EMIT_CHAR(ch, type, stream, quoter) \


@@ -397,14 +452,18 @@ extern enum language set_language (enum language);
 #define LA_GET_STRING(value, buffer, length, chartype, encoding) \
   (current_language->la_get_string(value, buffer, length, chartype, encoding))
 
 #define LA_GET_STRING(value, buffer, length, chartype, encoding) \
   (current_language->la_get_string(value, buffer, length, chartype, encoding))
 

-#define LA_PRINT_ARRAY_INDEX(index_value, stream, optins) \
+#define LA_PRINT_ARRAY_INDEX(index_value, stream, options) \

   (current_language->la_print_array_index(index_value, stream, options))
 
   (current_language->la_print_array_index(index_value, stream, options))
 

+#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK, DATA) \
+  (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK, \
+                                             DATA))
+

 /* Test a character to decide whether it can be printed in literal form
    or needs to be printed in another representation.  For example,
    in C the literal form of the character with octal value 141 is 'a'
    and the "other representation" is '\141'.  The "other representation"
 /* Test a character to decide whether it can be printed in literal form
    or needs to be printed in another representation.  For example,
    in C the literal form of the character with octal value 141 is 'a'
    and the "other representation" is '\141'.  The "other representation"

-   is program language dependent. */
+   is program language dependent.  */

 
 #define PRINT_LITERAL_FORM(c)          \
   ((c) >= 0x20                         \
 
 #define PRINT_LITERAL_FORM(c)          \
   ((c) >= 0x20                         \


@@ -413,37 +472,17 @@ extern enum language set_language (enum language);
 
 /* Type predicates */
 
 
 /* Type predicates */
 

-extern int simple_type (struct type *);
-
-extern int ordered_type (struct type *);
-
-extern int same_type (struct type *, struct type *);
-
-extern int integral_type (struct type *);
-
-extern int numeric_type (struct type *);
-
-extern int character_type (struct type *);
-
-extern int boolean_type (struct type *);
-
-extern int float_type (struct type *);
-

 extern int pointer_type (struct type *);
 
 extern int pointer_type (struct type *);
 

-extern int structured_type (struct type *);
-
-/* Checks Binary and Unary operations for semantic type correctness */
-/* FIXME:  Does not appear to be used */
+/* Checks Binary and Unary operations for semantic type correctness.  */
+/* FIXME:  Does not appear to be used.  */

 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
 
 extern void binop_type_check (struct value *, struct value *, int);
 
 /* Error messages */
 
 #define unop_type_check(v,o) binop_type_check((v),NULL,(o))
 
 extern void binop_type_check (struct value *, struct value *, int);
 
 /* Error messages */
 

-extern void type_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
-
-extern void range_error (const char *, ...) ATTR_FORMAT (printf, 1, 2);
+extern void range_error (const char *, ...) ATTRIBUTE_PRINTF (1, 2);

 
 /* Data:  Does this value represent "truth" to the current language?  */
 
 
 /* Data:  Does this value represent "truth" to the current language?  */
 


@@ -455,7 +494,7 @@ extern enum language language_enum (char *str);
 
 extern const struct language_defn *language_def (enum language);
 
 
 extern const struct language_defn *language_def (enum language);
 

-extern char *language_str (enum language);
+extern const char *language_str (enum language);

 
 /* Add a language to the set known by GDB (at initialization time).  */
 
 
 /* Add a language to the set known by GDB (at initialization time).  */
 


@@ -463,7 +502,7 @@ extern void add_language (const struct language_defn *);
 
 extern enum language get_frame_language (void);        /* In stack.c */
 
 
 extern enum language get_frame_language (void);        /* In stack.c */
 

-/* Check for a language-specific trampoline. */
+/* Check for a language-specific trampoline.  */

 
 extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
 
 
 extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);