X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e141f4d4bb6584bfbf13003047a2e48e9a6eab6a..cb8d8bb9b6aec5b873e93d0bab91f0a4ab29d9b0:/src/complain.h diff --git a/src/complain.h b/src/complain.h index 3e028d69..0d81503d 100644 --- a/src/complain.h +++ b/src/complain.h @@ -1,5 +1,6 @@ /* Declaration for error-reporting function for Bison. - Copyright (C) 2000-2002, 2006, 2009-2010 Free Software Foundation, + + Copyright (C) 2000-2002, 2006, 2009-2013 Free Software Foundation, Inc. This program is free software: you can redistribute it and/or modify @@ -20,60 +21,124 @@ # include "location.h" -# ifdef __cplusplus -extern "C" { -# endif - -/** Informative messages, but we proceed. */ - -void warn (char const *format, ...) - __attribute__ ((__format__ (__printf__, 1, 2))); - -void warn_at (location loc, char const *format, ...) - __attribute__ ((__format__ (__printf__, 2, 3))); - -/* Generate a message aligned by an indent. - When *indent == 0, assign message's indent to *indent, - When *indent > 0, align the message by *indent value. */ -void warn_at_indent (location loc, unsigned *indent, - char const *format, ...) +/* Sub-messages indent. */ +# define SUB_INDENT (4) + +/*-------------. +| --warnings. | +`-------------*/ + +/** The bits assigned to each warning type. */ +typedef enum + { + warning_midrule_values, /**< Unset or unused midrule values. */ + warning_yacc, /**< POSIXME. */ + warning_conflicts_sr, /**< S/R conflicts. */ + warning_conflicts_rr, /**< R/R conflicts. */ + warning_empty_rule, /**< Implicitly empty rules. */ + warning_deprecated, /**< Obsolete constructs. */ + warning_precedence, /**< Useless precedence and associativity. */ + warning_other, /**< All other warnings. */ + + warnings_size /**< The number of warnings. Must be last. */ + } warning_bit; + +/** Whether -Werror was set. */ +extern bool warnings_are_errors; + +/** Decode a single argument from -W. + * + * \param arg the subarguments to decode. + * If null, then activate all the flags. + * \param no length of the potential "no-" prefix. + * Can be 0 or 3. If 3, negate the action of the subargument. + * \param err length of a potential "error=". + * Can be 0 or 6. If 6, treat the subargument as a CATEGORY. + * + * If VALUE != 0 then KEY sets flags and no-KEY clears them. + * If VALUE == 0 then KEY clears all flags from \c all and no-KEY sets all + * flags from \c all. Thus no-none = all and no-all = none. + */ +void warning_argmatch (char const *arg, size_t no, size_t err); + +/** Decode a comma-separated list of arguments from -W. + * + * \param args comma separated list of effective subarguments to decode. + * If 0, then activate all the flags. + */ +void warnings_argmatch (char *args); + + +/*-----------. +| complain. | +`-----------*/ + +/** Initialize this module. */ +void complain_init (void); + +typedef enum + { + /**< Issue no warnings. */ + Wnone = 0, + + Wmidrule_values = 1 << warning_midrule_values, + Wyacc = 1 << warning_yacc, + Wconflicts_sr = 1 << warning_conflicts_sr, + Wconflicts_rr = 1 << warning_conflicts_rr, + Wdeprecated = 1 << warning_deprecated, + Wempty_rule = 1 << warning_empty_rule, + Wprecedence = 1 << warning_precedence, + Wother = 1 << warning_other, + + Werror = 1 << 10, /** This bit is no longer used. */ + + complaint = 1 << 11, /**< All complaints. */ + fatal = 1 << 12, /**< All fatal errors. */ + silent = 1 << 13, /**< Do not display the warning type. */ + no_caret = 1 << 14, /**< Do not display caret location. */ + + /**< All above warnings. */ + Weverything = ~complaint & ~fatal & ~silent, + Wall = Weverything & ~Wyacc + } warnings; + +/** Whether the warnings of \a flags are all unset. + (Never enabled, never disabled). */ +bool warning_is_unset (warnings flags); + +/** Make a complaint, with maybe a location. */ +void complain (location const *loc, warnings flags, char const *message, ...) __attribute__ ((__format__ (__printf__, 3, 4))); -/** An error, but we continue and die later. */ +/** Likewise, but with an \a argc/argv interface. */ +void complain_args (location const *loc, warnings w, unsigned *indent, + int argc, char *arg[]); -void complain (char const *format, ...) - __attribute__ ((__format__ (__printf__, 1, 2))); +/** Make a complaint with location and some indentation. */ +void complain_indent (location const *loc, warnings flags, unsigned *indent, + char const *message, ...) + __attribute__ ((__format__ (__printf__, 4, 5))); -void complain_at (location loc, char const *format, ...) - __attribute__ ((__format__ (__printf__, 2, 3))); -/* Generate a message aligned by an indent. - When *indent == 0, assign message's indent to *indent, - When *indent > 0, align the message by *indent value. */ -void complain_at_indent (location loc, unsigned *indent, - char const *format, ...) - __attribute__ ((__format__ (__printf__, 3, 4))); +/** Report an obsolete syntax, suggest the updated one. */ +void deprecated_directive (location const *loc, + char const *obsolete, char const *updated); -/** An incompatibility with POSIX Yacc: mapped either to warn* or - complain* depending on yacc_flag. */ +/** Report a repeated directive for a rule. */ +void duplicate_directive (char const *directive, + location first, location second); -void yacc_at (location loc, char const *format, ...) - __attribute__ ((__format__ (__printf__, 2, 3))); - - -/** A fatal error, causing immediate exit. */ - -void fatal (char const *format, ...) - __attribute__ ((__noreturn__, __format__ (__printf__, 1, 2))); - -void fatal_at (location loc, char const *format, ...) - __attribute__ ((__noreturn__, __format__ (__printf__, 2, 3))); +/** Warnings treated as errors shouldn't stop the execution as regular errors + should (because due to their nature, it is safe to go on). Thus, there are + three possible execution statuses. */ +typedef enum + { + status_none, + status_warning_as_error, + status_complaint + } err_status; /** Whether an error was reported. */ -extern bool complaint_issued; - -# ifdef __cplusplus -} -# endif +extern err_status complaint_status; #endif /* !COMPLAIN_H_ */