/* Command line option handling.
- Copyright (C) 2002, 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+ Free Software Foundation, Inc.
This file is part of GCC.
{
const char *opt_text;
const char *help;
+ const char *missing_argument_error;
unsigned short back_chain;
unsigned char opt_len;
int neg_index;
extern const char *const lang_names[];
extern const unsigned int cl_lang_count;
-#define CL_SAVE (1 << 17) /* Target-specific option for attribute. */
-#define CL_PARAMS (1 << 18) /* Fake entry. Used to display --param info with --help. */
-#define CL_WARNING (1 << 19) /* Enables an (optional) warning message. */
-#define CL_OPTIMIZATION (1 << 20) /* Enables an (optional) optimization. */
-#define CL_TARGET (1 << 21) /* Target-specific option. */
-#define CL_COMMON (1 << 22) /* Language-independent. */
+#define CL_PARAMS (1 << 17) /* Fake entry. Used to display --param info with --help. */
+#define CL_WARNING (1 << 18) /* Enables an (optional) warning message. */
+#define CL_OPTIMIZATION (1 << 19) /* Enables an (optional) optimization. */
+#define CL_TARGET (1 << 20) /* Target-specific option. */
+#define CL_COMMON (1 << 21) /* Language-independent. */
-#define CL_MIN_OPTION_CLASS CL_SAVE
+#define CL_MIN_OPTION_CLASS CL_PARAMS
#define CL_MAX_OPTION_CLASS CL_COMMON
/* From here on the bits describe attributes of the options.
This distinction is important because --help will not list options
which only have these higher bits set. */
+#define CL_SAVE (1 << 22) /* Target-specific option for attribute. */
#define CL_DISABLED (1 << 23) /* Disabled in this configuration. */
#define CL_REPORT (1 << 24) /* Report argument with -fverbose-asm */
#define CL_JOINED (1 << 25) /* If takes joined argument. */
#define CL_UINTEGER (1 << 29) /* Argument is an integer >=0. */
#define CL_UNDOCUMENTED (1 << 30) /* Do not output with --help. */
+/* Possible ways in which a command-line option may be erroneous.
+ These do not include not being known at all; an option index of
+ OPT_SPECIAL_unknown is used for that. */
+
+#define CL_ERR_DISABLED (1 << 0) /* Disabled in this configuration. */
+#define CL_ERR_MISSING_ARG (1 << 1) /* Argument required but missing. */
+#define CL_ERR_WRONG_LANG (1 << 2) /* Option for wrong language. */
+#define CL_ERR_UINT_ARG (1 << 3) /* Bad unsigned integer argument. */
+
+/* Structure describing the result of decoding an option. */
+
+struct cl_decoded_option
+{
+ /* The index of this option, or an OPT_SPECIAL_* value for
+ non-options and unknown options. */
+ size_t opt_index;
+
+ /* The string argument, or NULL if none. For OPT_SPECIAL_* cases,
+ the option or non-option command-line argument. */
+ const char *arg;
+
+ /* The original text of option plus arguments, with separate argv
+ elements concatenated into one string with spaces separating
+ them. This is for such uses as diagnostics and
+ -frecord-gcc-switches. */
+ const char *orig_option_with_args_text;
+
+ /* The canonical form of the option and its argument, for when it is
+ necessary to reconstruct argv elements (in particular, for
+ processing specs and passing options to subprocesses from the
+ driver). */
+ const char *canonical_option[4];
+
+ /* The number of elements in the canonical form of the option and
+ arguments; always at least 1. */
+ size_t canonical_option_num_elements;
+
+ /* For a boolean option, 1 for the true case and 0 for the "no-"
+ case. For an unsigned integer option, the value of the
+ argument. 1 in all other cases. */
+ int value;
+
+ /* Any flags describing errors detected in this option. */
+ int errors;
+};
+
+/* Structure describing a single option-handling callback. */
+
+struct cl_option_handler_func
+{
+ /* The function called to handle the option. */
+ bool (*handler) (size_t opt_index, const char *arg, int value,
+ unsigned int lang_mask, int kind,
+ const struct cl_option_handlers *handlers);
+
+ /* The mask that must have some bit in common with the flags for the
+ option for this particular handler to be used. */
+ unsigned int mask;
+};
+
+/* Structure describing the callbacks used in handling options. */
+
+struct cl_option_handlers
+{
+ /* Callback for an unknown option to determine whether to give an
+ error for it, and possibly store information to diagnose the
+ option at a later point. Return true if an error should be
+ given, false otherwise. */
+ bool (*unknown_option_callback) (const char *opt);
+
+ /* Callback to handle, and possibly diagnose, an option for another
+ language. */
+ void (*wrong_lang_callback) (const char *text,
+ const struct cl_option *option,
+ unsigned int lang_mask);
+
+ /* Callback to call after the successful handling of any option. */
+ void (*post_handling_callback) (size_t opt_index, const char *arg,
+ int value, unsigned int mask);
+
+ /* The number of individual handlers. */
+ size_t num_handlers;
+
+ /* The handlers themselves. */
+ struct cl_option_handler_func handlers[3];
+};
+
/* Input file names. */
extern const char **in_fnames;
extern unsigned num_in_fnames;
size_t find_opt (const char *input, int lang_mask);
+extern int integral_argument (const char *arg);
+extern void decode_cmdline_options_to_array (unsigned int argc,
+ const char **argv,
+ unsigned int lang_mask,
+ struct cl_decoded_option **decoded_options,
+ unsigned int *decoded_options_count);
extern void prune_options (int *argcp, char ***argvp);
-extern void decode_options (unsigned int argc, const char **argv);
+extern void decode_options (unsigned int argc, const char **argv,
+ struct cl_decoded_option **decoded_options,
+ unsigned int *decoded_options_count);
extern int option_enabled (int opt_idx);
extern bool get_option_state (int, struct cl_option_state *);
-
+extern void set_option (int opt_index, int value, const char *arg, int);
+bool handle_option (size_t opt_index, const char *arg, int value,
+ unsigned int lang_mask, int kind,
+ const struct cl_option_handlers *handlers);
+extern void read_cmdline_option (struct cl_decoded_option *decoded,
+ unsigned int lang_mask,
+ const struct cl_option_handlers *handlers);
+extern void register_warning_as_error_callback (void (*callback) (int));
extern void enable_warning_as_error (const char *arg, int value,
- unsigned int lang_mask);
+ unsigned int lang_mask,
+ const struct cl_option_handlers *handlers);
extern void print_ignored_options (void);
#endif
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