Document libdimension with Doxygen.

1 files changed, 63 insertions, 16 deletions

diff --git a/libdimension/dimension/error.h b/libdimension/dimension/error.h
index a0b3857..8482266 100644
--- a/libdimension/dimension/error.h
+++ b/libdimension/dimension/error.h
@@ -18,22 +18,29 @@
  * <http://www.gnu.org/licenses/>.                                       *
  *************************************************************************/
 
-/*
- * Error handling.  Errors are reported at a given severity by the dmnsn_error()
- * macro at a given severity, which prints a warning if it is below the set
- * resilience, or prints an error and exits if it's at or above the set
- * resilience.
+/**
+ * @file
+ * Error reporting interface.  Errors are reported at a given severity by the
+ * dmnsn_error() macro at a given severity, which prints a warning if it is
+ * below the set resilience, or prints an error and exits if it's at or above
+ * the set resilience.
  */
 
 #ifndef DIMENSION_ERROR_H
 #define DIMENSION_ERROR_H
 
-typedef enum {
-  DMNSN_SEVERITY_LOW,    /* Only die on low resilience */
-  DMNSN_SEVERITY_MEDIUM, /* Die on low or medium resilience */
-  DMNSN_SEVERITY_HIGH    /* Always die */
+/** Error severity codes */
+typedef enum dmnsn_severity {
+  DMNSN_SEVERITY_LOW,    /**< Only die on low resilience */
+  DMNSN_SEVERITY_MEDIUM, /**< Die on low or medium resilience */
+  DMNSN_SEVERITY_HIGH    /**< Always die */
 } dmnsn_severity;
 
+/**
+ * @internal
+ * @def DMNSN_FUNC
+ * @brief Expands to the name of the current function
+ */
 #ifdef __GNUC__
   #define DMNSN_FUNC __PRETTY_FUNCTION__
 #elif __STDC_VERSION__ >= 199901L
@@ -42,13 +49,24 @@ typedef enum {
   #define DMNSN_FUNC "<unknown function>"
 #endif
 
-/* Use this macro to report an error */
+/**
+ * Report an error.
+ * @param[in] severity  A @ref dmnsn_severity representing the severity of the
+ *                      error.  DMNSN_SEVERITY_HIGH will always terminate the
+ *                      running thread.
+ * @param[in] str       A string to print explaining the error.
+ */
 #define dmnsn_error(severity, str)                                             \
   dmnsn_report_error((dmnsn_severity)(severity),                               \
                      DMNSN_FUNC, __FILE__, __LINE__,                           \
                      str)
 
-/* Make an assertion */
+/**
+ * @def dmnsn_assert
+ * Make an assertion.
+ * @param[in] expr  The expression to assert.
+ * @param[in] str   A string to print if the assertion fails.
+ */
 #ifdef NDEBUG
   #define dmnsn_assert(expr, str) ((void)0)
 #else
@@ -60,21 +78,50 @@ typedef enum {
     } while (0)
 #endif
 
-/* Called by dmnsn_error() - don't call directly */
+/**
+ * @internal
+ * Called by dmnsn_error(); don't call directly.
+ * @param[in] severity  The severity of the error.
+ * @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_error(dmnsn_severity severity,
                         const char *func, const char *file, unsigned int line,
                         const char *str);
 
-/* Get and set the library resilience, thread-safely */
+/**
+ * Get the library resilience, thread-safely.
+ * @return The error severity considered fatal.
+ */
 dmnsn_severity dmnsn_get_resilience(void);
+
+/**
+ * Set the library resilience, thread-safely.
+ * @param[in] resilience  The new minimum severity that will cause a fatal
+ *                        error.
+ */
 void dmnsn_set_resilience(dmnsn_severity resilience);
 
-/* Fatal error callback type */
+/**
+ * Fatal error callback type.  This function should never return.
+ */
 typedef void dmnsn_fatal_error_fn(void);
 
-/* Get and set libdimension fatal error handling strategy - the default is
-   exit(EXIT_FAILURE) */
+/**
+ * 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);
 
 #endif /* DIMENSION_ERROR_H */