grim/gplate

Added 2 new functions: gplate_library_[gs]et_default_function_for_tag
render_rewrite
2008-02-17, grim
abd9d3958c88
Parents 05bb9395cf2e
Children 66a8580d5c65
Added 2 new functions: gplate_library_[gs]et_default_function_for_tag
2 files changed, 93 insertions(+), 0 deletions(-)
  • +90 -0
    gplate/gplate-library.c
  • +3 -0
    gplate/gplate-library.h
    • --- a/gplate/gplate-library.c Thu Feb 14 03:48:40 2008 -0600
    +++ b/gplate/gplate-library.c Sun Feb 17 03:22:52 2008 -0600
    @@ -36,6 +36,7 @@
    GType tag;
    gchar *prefix;
    gchar *suffix;
    + GType default_function;
    } GPlateTagData;
    /******************************************************************************
    @@ -122,6 +123,7 @@
    data->tag = tag;
    data->prefix = (prefix) ? g_strdup(prefix) : NULL;
    data->suffix = (suffix) ? g_strdup(suffix) : NULL;
    + data->default_function = G_TYPE_INVALID;
    g_type_class_unref(klass);
    @@ -602,6 +604,94 @@
    return default_tag;
    }
    +/**
    + * gplate_library_set_default_function_for_tag:
    + * @name: The name of the function.
    + * @tag: The #GType of the tag.
    + * @error: The return address for any errors.
    + *
    + * Sets the default function of @tag to @name.
    + *
    + * A default function is used when the contents of a tag do not match any
    + * functions that are registered to the tag.
    + *
    + * For example, the default function of #GPlateCommentTag is
    + * #GPlateNoopFunction.
    + *
    + * Return Value: TRUE on success, otherwise FALSE with @error set.
    + */
    +gboolean
    +gplate_library_set_default_function_for_tag(const gchar *name, GType tag,
    + GError **error)
    +{
    + GPlateTagData *tdata = NULL;
    + GType function = G_TYPE_INVALID;
    +
    + g_return_val_if_fail(name, FALSE);
    +
    + gplate_library_lazy_init();
    +
    + tdata = g_hash_table_lookup(tags, GSIZE_TO_POINTER(tag));
    + if(!tdata) {
    + if(error) {
    + *error = g_error_new(GPLATE_DOMAIN,
    + GPLATE_ERROR_LIBRARY_TAG_NOT_FOUND,
    + "tag '%s' is not registered",
    + g_type_name(tag));
    + }
    +
    + return FALSE;
    + }
    +
    + function = gplate_library_lookup_function_for_tag(name, tag, error);
    + if(function == G_TYPE_INVALID) {
    + /* error should already be set from
    + * gplate_library_lookup_function_for_tag
    + */
    + return FALSE;
    + }
    +
    + tdata->default_function = function;
    +
    + return TRUE;
    +}
    +
    +/**
    + * gplate_library_get_default_function_for_tag:
    + * @tag: The #GPlateTag.
    + * @error: The return address for any errors.
    + *
    + * Get's the default function for @tag.
    + *
    + * Return Value: On success, the #GType of the function is returned.
    + * On failure, #G_TYPE_INVALID is returned and @error is set.
    + *
    + * However, if a tag does not have a default function,
    + * #G_TYPE_INVALID will be returned. So it is recommended to
    + * pass @error and check if it's set before assuming a return
    + * value of #G_TYPE_INVALID is an error.
    + */
    +GType
    +gplate_library_get_default_function_for_tag(GType tag, GError **error) {
    + GPlateTagData *tdata = NULL;
    +
    + gplate_library_lazy_init();
    +
    + tdata = g_hash_table_lookup(tags, GSIZE_TO_POINTER(tag));
    + if(!tdata) {
    + if(error) {
    + *error = g_error_new(GPLATE_DOMAIN,
    + GPLATE_ERROR_LIBRARY_TAG_NOT_FOUND,
    + "tag '%s' is not registered",
    + g_type_name(tag));
    + }
    +
    + return G_TYPE_INVALID;
    + }
    +
    + return tdata->default_function;
    +}
    +
    /******************************************************************************
    * For each stuff
    *****************************************************************************/
    --- a/gplate/gplate-library.h Thu Feb 14 03:48:40 2008 -0600
    +++ b/gplate/gplate-library.h Sun Feb 17 03:22:52 2008 -0600
    @@ -44,6 +44,9 @@
    gboolean gplate_library_lookup_tag(GType tag, gchar **prefix, gchar **suffix, GError **error);
    GType gplate_library_get_default_tag(void);
    +gboolean gplate_library_set_default_function_for_tag(const gchar *name, GType tag, GError **error);
    +GType gplate_library_get_default_function_for_tag(GType tag, GError **error);
    +
    void gplate_library_tags_foreach(GPlateLibraryTagsForeachFunc func, gpointer data);
    G_END_DECLS