diff options
Diffstat (limited to 'src/diag.h')
| -rw-r--r-- | src/diag.h | 161 |
1 files changed, 135 insertions, 26 deletions
@@ -1,42 +1,141 @@ -/**************************************************************************** - * bfs * - * Copyright (C) 2019-2022 Tavian Barnes <tavianator@tavianator.com> * - * * - * Permission to use, copy, modify, and/or distribute this software for any * - * purpose with or without fee is hereby granted. * - * * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * - ****************************************************************************/ - -/** - * Formatters for diagnostic messages. +// Copyright © Tavian Barnes <tavianator@tavianator.com> +// SPDX-License-Identifier: 0BSD + +/** + * Diagnostic messages. */ #ifndef BFS_DIAG_H #define BFS_DIAG_H -#include "ctx.h" -#include "util.h" +#include "prelude.h" #include <stdarg.h> -#include <stdbool.h> +/** + * static_assert() with an optional second argument. + */ +#if __STDC_VERSION__ >= C23 +# define bfs_static_assert static_assert +#else +# define bfs_static_assert(...) bfs_static_assert_(__VA_ARGS__, #__VA_ARGS__, ) +# define bfs_static_assert_(expr, msg, ...) _Static_assert(expr, msg) +#endif + +/** + * A source code location. + */ +struct bfs_loc { + const char *file; + int line; + const char *func; +}; + +#define BFS_LOC_INIT { .file = __FILE__, .line = __LINE__, .func = __func__ } + +/** + * Get the current source code location. + */ +#if __STDC_VERSION__ >= C23 +# define bfs_location() (&(static const struct bfs_loc)BFS_LOC_INIT) +#else +# define bfs_location() (&(const struct bfs_loc)BFS_LOC_INIT) +#endif + +/** + * Print a low-level diagnostic message to standard error, formatted like + * + * bfs: func@src/file.c:0: Message + */ +attr(printf(2, 3)) +void bfs_diagf(const struct bfs_loc *loc, const char *format, ...); + +/** + * Unconditional diagnostic message. + */ +#define bfs_diag(...) bfs_diagf(bfs_location(), __VA_ARGS__) + +/** + * Print a message to standard error and abort. + */ +attr(cold, printf(2, 3)) +noreturn void bfs_abortf(const struct bfs_loc *loc, const char *format, ...); + +/** + * Unconditional abort with a message. + */ +#define bfs_abort(...) bfs_abortf(bfs_location(), __VA_ARGS__) + +/** + * Abort in debug builds; no-op in release builds. + */ +#ifdef NDEBUG +# define bfs_bug(...) ((void)0) +#else +# define bfs_bug bfs_abort +#endif + +/** + * Unconditional assert. + */ +#define bfs_verify(...) \ + bfs_verify_(#__VA_ARGS__, __VA_ARGS__, "", "") + +#define bfs_verify_(str, cond, format, ...) \ + ((cond) ? (void)0 : bfs_abort( \ + sizeof(format) > 1 \ + ? "%.0s" format "%s%s" \ + : "Assertion failed: `%s`%s", \ + str, __VA_ARGS__)) + +/** + * Assert in debug builds; no-op in release builds. + */ +#ifdef NDEBUG +# define bfs_assert(...) ((void)0) +#else +# define bfs_assert bfs_verify +#endif + +struct bfs_ctx; struct bfs_expr; /** + * Various debugging flags. + */ +enum debug_flags { + /** Print cost estimates. */ + DEBUG_COST = 1 << 0, + /** Print executed command details. */ + DEBUG_EXEC = 1 << 1, + /** Print optimization details. */ + DEBUG_OPT = 1 << 2, + /** Print rate information. */ + DEBUG_RATES = 1 << 3, + /** Trace the filesystem traversal. */ + DEBUG_SEARCH = 1 << 4, + /** Trace all stat() calls. */ + DEBUG_STAT = 1 << 5, + /** Print the parse tree. */ + DEBUG_TREE = 1 << 6, + /** All debug flags. */ + DEBUG_ALL = (1 << 7) - 1, +}; + +/** + * Convert a debug flag to a string. + */ +const char *debug_flag_name(enum debug_flags flag); + +/** * Like perror(), but decorated like bfs_error(). */ +attr(cold) void bfs_perror(const struct bfs_ctx *ctx, const char *str); /** * Shorthand for printing error messages. */ -BFS_FORMATTER(2, 3) +attr(cold, printf(2, 3)) void bfs_error(const struct bfs_ctx *ctx, const char *format, ...); /** @@ -44,7 +143,7 @@ void bfs_error(const struct bfs_ctx *ctx, const char *format, ...); * * @return Whether a warning was printed. */ -BFS_FORMATTER(2, 3) +attr(cold, printf(2, 3)) bool bfs_warning(const struct bfs_ctx *ctx, const char *format, ...); /** @@ -52,57 +151,67 @@ bool bfs_warning(const struct bfs_ctx *ctx, const char *format, ...); * * @return Whether a debug message was printed. */ -BFS_FORMATTER(3, 4) +attr(cold, printf(3, 4)) bool bfs_debug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, ...); /** * bfs_error() variant that takes a va_list. */ +attr(cold, printf(2, 0)) void bfs_verror(const struct bfs_ctx *ctx, const char *format, va_list args); /** * bfs_warning() variant that takes a va_list. */ +attr(cold, printf(2, 0)) bool bfs_vwarning(const struct bfs_ctx *ctx, const char *format, va_list args); /** * bfs_debug() variant that takes a va_list. */ +attr(cold, printf(3, 0)) bool bfs_vdebug(const struct bfs_ctx *ctx, enum debug_flags flag, const char *format, va_list args); /** * Print the error message prefix. */ +attr(cold) void bfs_error_prefix(const struct bfs_ctx *ctx); /** * Print the warning message prefix. */ +attr(cold) bool bfs_warning_prefix(const struct bfs_ctx *ctx); /** * Print the debug message prefix. */ +attr(cold) bool bfs_debug_prefix(const struct bfs_ctx *ctx, enum debug_flags flag); /** * Highlight parts of the command line in an error message. */ -void bfs_argv_error(const struct bfs_ctx *ctx, const bool *args); +attr(cold) +void bfs_argv_error(const struct bfs_ctx *ctx, const bool args[]); /** * Highlight parts of an expression in an error message. */ +attr(cold) void bfs_expr_error(const struct bfs_ctx *ctx, const struct bfs_expr *expr); /** * Highlight parts of the command line in a warning message. */ -bool bfs_argv_warning(const struct bfs_ctx *ctx, const bool *args); +attr(cold) +bool bfs_argv_warning(const struct bfs_ctx *ctx, const bool args[]); /** * Highlight parts of an expression in a warning message. */ +attr(cold) bool bfs_expr_warning(const struct bfs_ctx *ctx, const struct bfs_expr *expr); #endif // BFS_DIAG_H |