1 files changed, 118 insertions, 0 deletions
diff --git a/libdimension/dimension/base/error.h b/libdimension/dimension/base/error.h
new file mode 100644
index 0000000..d039081
--- /dev/null
+++ b/libdimension/dimension/base/error.h
@@ -0,0 +1,118 @@
+/*************************************************************************
+ * Copyright (C) 2009-2014 Tavian Barnes <tavianator@tavianator.com>     *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension Library is free software; you can redistribute it and/  *
+ * or modify it under the terms of the GNU Lesser General Public License *
+ * as published by the Free Software Foundation; either version 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension Library is distributed in the hope that it will be      *
+ * useful, but WITHOUT ANY WARRANTY; without even the implied warranty   *
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  *
+ * Lesser General Public License for more details.                       *
+ *                                                                       *
+ * You should have received a copy of the GNU Lesser General Public      *
+ * License along with this program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+/**
+ * @file
+ * Error reporting.
+ */
+
+#ifndef DMNSN_BASE_H
+#error "Please include <dimension/base.h> instead of this header directly."
+#endif
+
+#include <stdbool.h>
+
+/**
+ * Report a warning.
+ * @param[in] str  A string to print explaining the warning.
+ */
+#define dmnsn_warning(str)                                      \
+  dmnsn_report_warning(DMNSN_FUNC, __FILE__, __LINE__, str)
+
+/**
+ * Report an error.
+ * @param[in] str  A string to print explaining the error.
+ */
+#define dmnsn_error(str)                                        \
+  dmnsn_report_error(DMNSN_FUNC, __FILE__, __LINE__, str)
+
+/**
+ * @def dmnsn_assert
+ * Make an assertion.
+ * @param[in] expr  The expression to assert.
+ * @param[in] str   A string to print if the assertion fails.
+ */
+#if DMNSN_DEBUG
+  #define dmnsn_assert(expr, str)                 \
+    do {                                          \
+      if (!(expr)) {                              \
+        dmnsn_error((str));                       \
+      }                                           \
+    } while (0)
+#else
+  #define dmnsn_assert(expr, str) ((void)0)
+#endif
+
+/**
+ * @def dmnsn_unreachable
+ * Express that a line of code is unreachable.
+ * @param[in] str  A string to print if the line is reached.
+ */
+#if DMNSN_DEBUG
+  #define dmnsn_unreachable(str) dmnsn_error((str))
+#else
+  #define dmnsn_unreachable(str) DMNSN_UNREACHABLE()
+#endif
+
+/**
+ * @internal
+ * Called by dmnsn_warning(); don't call directly.
+ * @param[in] func  The name of the function where the error originated.
+ * @param[in] file  The file where the error originated.
+ * @param[in] line  The line number where the error originated.
+ * @param[in] str   A string describing the error.
+ */
+void dmnsn_report_warning(const char *func, const char *file, unsigned int line, const char *str);
+
+/**
+ * @internal
+ * Called by dmnsn_error(); don't call directly.
+ * @param[in] func  The name of the function where the error originated.
+ * @param[in] file  The file where the error originated.
+ * @param[in] line  The line number where the error originated.
+ * @param[in] str   A string describing the error.
+ */
+DMNSN_NORETURN dmnsn_report_error(const char *func, const char *file, unsigned int line, const char *str);
+
+/**
+ * Treat warnings as errors.
+ * @param[in] always_die  Whether to die on warnings.
+ */
+void dmnsn_die_on_warnings(bool always_die);
+
+/**
+ * Fatal error callback type.  This function should never return.
+ */
+typedef void dmnsn_fatal_error_fn(void);
+
+/**
+ * Get the libdimension fatal error handler, thread-safely.  The default fatal
+ * error handler terminates the current thread, or the entire program if the
+ * current thread is the main thread.
+ * @return The current fatal error handler.
+ */
+dmnsn_fatal_error_fn *dmnsn_get_fatal_error_fn(void);
+
+/**
+ * Set the libdimension fatal error handler, thread-safely.
+ * @param[in] fatal  The new fatal error handler.  This function must never
+ *                   return.
+ */
+void dmnsn_set_fatal_error_fn(dmnsn_fatal_error_fn *fatal);