/* Source-language-related definitions for GDB.
- Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ Copyright (C) 1991-2017 Free Software Foundation, Inc.
Contributed by the Department of Computer Science at the State University
of New York at Buffalo.
#define LANGUAGE_H 1
#include "symtab.h"
+#include "common/function-view.h"
/* Forward decls for prototypes. */
struct value;
transformed for lookup. */
typedef int (*symbol_name_cmp_ftype) (const char *symbol_search_name,
- const char *lookup_name);
+ const char *lookup_name);
/* Structure tying together assorted information about a language. */
/* Style of macro expansion, if any, supported by this language. */
enum macro_expansion la_macro_expansion;
+ /* A NULL-terminated array of file extensions for this language.
+ The extension must include the ".", like ".c". If this
+ language doesn't need to provide any filename extensions, this
+ may be NULL. */
+
+ const char *const *la_filename_extensions;
+
/* Definitions related to expression printing, prefixifying, and
dumping. */
/* Parser error function. */
- void (*la_error) (char *);
+ void (*la_error) (const char *);
/* Given an expression *EXPP created by prefixifying the result of
la_parser, perform any remaining processing necessary to complete
TYPE is the type of the sub-object to be printed.
- 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
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,
+ struct value *val,
const struct value_print_options *options);
/* Print a top-level value using syntax appropriate for this language. */
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.
+ /* Given a symbol VAR, the corresponding block VAR_BLOCK (if any) and a
+ stack frame id FRAME, read the value of the variable and return (pointer
+ to a) struct value containing the value.
+
+ VAR_BLOCK is needed if there's a possibility for VAR to be outside
+ FRAME. This is what happens if FRAME correspond to a nested function
+ and VAR is defined in the outer function. If callers know that VAR is
+ located in FRAME or is global/static, NULL can be passed as VAR_BLOCK.
Throw an error if the variable cannot be found. */
struct value *(*la_read_var_value) (struct symbol *var,
+ const struct block *var_block,
struct frame_info *frame);
/* PC is possibly an unknown languages trampoline.
/* If this is non-NULL, specifies the name that of the implicit
local variable that refers to the current object instance. */
- char *la_name_of_this;
+ const char *la_name_of_this;
/* This is a function that lookup_symbol will call when it gets to
the part of symbol lookup where C looks up static and global
/* Return demangled language symbol, or NULL. */
char *(*la_demangle) (const char *mangled, int options);
+ /* Demangle a symbol according to this language's rules. Unlike
+ la_demangle, this does not take any options.
+
+ *DEMANGLED will be set by this function.
+
+ If this function returns 0, then *DEMANGLED must always be set
+ to NULL.
+
+ If this function returns 1, the implementation may set this to
+ a xmalloc'd string holding the demangled form. However, it is
+ not required to. The string, if any, is owned by the caller.
+
+ The resulting string should be of the form that will be
+ installed into a symbol. */
+ int (*la_sniff_from_mangled_name) (const char *mangled, char **demangled);
+
/* Return class name of a mangled method name or NULL. */
char *(*la_class_name_from_physname) (const char *physname);
char string_lower_bound;
/* The list of characters forming word boundaries. */
- char *(*la_word_break_characters) (void);
+ const char *(*la_word_break_characters) (void);
- /* Should return a vector of all symbols which are possible
+ /* Add to the completion tracker 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);
+ void (*la_collect_symbol_completion_matches)
+ (completion_tracker &tracker,
+ complete_symbol_mode mode,
+ const char *text,
+ const char *word,
+ enum type_code code);
/* The per-architecture (OS/ABI) language information. */
void (*la_language_arch_info) (struct gdbarch *,
void (*la_get_string) (struct value *value, gdb_byte **buffer, int *length,
struct type **chartype, const char **charset);
+ /* Return an expression that can be used for a location
+ watchpoint. TYPE is a pointer type that points to the memory
+ to watch, and ADDR is the address of the watched memory. */
+ gdb::unique_xmalloc_ptr<char> (*la_watch_location_expression)
+ (struct type *type, CORE_ADDR addr);
+
/* 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.
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.
+ For each one, call CALLBACK with the symbol. If CALLBACK
+ returns false, 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);
+ void (*la_iterate_over_symbols)
+ (const struct block *block, const char *name, domain_enum domain,
+ gdb::function_view<symbol_found_callback_ftype> callback);
/* Various operations on varobj. */
const struct lang_varobj_ops *la_varobj_ops;
If 'la_get_gcc_context' is not defined, then this method is
ignored.
- This takes the user-supplied text and returns a newly malloc'd
- bit of code to compile. The caller owns the result.
+ This takes the user-supplied text and returns a new bit of code
+ to compile.
INST is the compiler instance being used.
INPUT is the user's input text.
parsed.
EXPR_PC is the PC at which the expression is being parsed. */
- char *(*la_compute_program) (struct compile_instance *inst,
- const char *input,
- struct gdbarch *gdbarch,
- const struct block *expr_block,
- CORE_ADDR expr_pc);
+ std::string (*la_compute_program) (struct compile_instance *inst,
+ const char *input,
+ struct gdbarch *gdbarch,
+ const struct block *expr_block,
+ CORE_ADDR expr_pc);
/* Add fields above this point, so the magic number is always last. */
/* Magic number for compat checking. */
#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,val,recurse,options) \
- (current_language->la_val_print(type,valaddr,offset,addr,stream, \
- val,recurse,options))
#define LA_VALUE_PRINT(val,stream,options) \
(current_language->la_value_print(val,stream,options))
#define 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))
+#define LA_ITERATE_OVER_SYMBOLS(BLOCK, NAME, DOMAIN, CALLBACK) \
+ (current_language->la_iterate_over_symbols (BLOCK, NAME, DOMAIN, CALLBACK))
/* Test a character to decide whether it can be printed in literal form
or needs to be printed in another representation. For example,
extern const char *language_str (enum language);
-/* Add a language to the set known by GDB (at initialization time). */
-
-extern void add_language (const struct language_defn *);
-
-extern enum language get_frame_language (struct frame_info *frame); /* In stack.c */
-
/* Check for a language-specific trampoline. */
extern CORE_ADDR skip_language_trampoline (struct frame_info *, CORE_ADDR pc);
extern char *language_demangle (const struct language_defn *current_language,
const char *mangled, int options);
+/* A wrapper for la_sniff_from_mangled_name. The arguments and result
+ are as for the method. */
+
+extern int language_sniff_from_mangled_name (const struct language_defn *lang,
+ const char *mangled,
+ char **demangled);
+
/* Return class name from physname, or NULL. */
extern char *language_class_name_from_physname (const struct language_defn *,
const char *physname);
/* Splitting strings into words. */
-extern char *default_word_break_characters (void);
+extern const char *default_word_break_characters (void);
/* Print the index of an array element using the C99 syntax. */
extern void default_print_array_index (struct value *index_value,
void c_get_string (struct value *value, gdb_byte **buffer, int *length,
struct type **char_type, const char **charset);
+/* The languages supported by GDB. */
+
+extern const struct language_defn auto_language_defn;
+extern const struct language_defn unknown_language_defn;
+extern const struct language_defn minimal_language_defn;
+
+extern const struct language_defn ada_language_defn;
+extern const struct language_defn asm_language_defn;
+extern const struct language_defn c_language_defn;
+extern const struct language_defn cplus_language_defn;
+extern const struct language_defn d_language_defn;
+extern const struct language_defn f_language_defn;
+extern const struct language_defn go_language_defn;
+extern const struct language_defn m2_language_defn;
+extern const struct language_defn objc_language_defn;
+extern const struct language_defn opencl_language_defn;
+extern const struct language_defn pascal_language_defn;
+extern const struct language_defn rust_language_defn;
+
+/* Save the current language and restore it upon destruction. */
+
+class scoped_restore_current_language
+{
+public:
+
+ explicit scoped_restore_current_language ()
+ : m_lang (current_language->la_language)
+ {
+ }
+
+ ~scoped_restore_current_language ()
+ {
+ set_language (m_lang);
+ }
+
+ scoped_restore_current_language (const scoped_restore_current_language &)
+ = delete;
+ scoped_restore_current_language &operator=
+ (const scoped_restore_current_language &) = delete;
+
+private:
+
+ enum language m_lang;
+};
+
#endif /* defined (LANGUAGE_H) */
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