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-rw-r--r--src/parse/properties/flex_flow.c137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/parse/properties/flex_flow.c b/src/parse/properties/flex_flow.c
new file mode 100644
index 0000000..40a42d9
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+++ b/src/parse/properties/flex_flow.c
@@ -0,0 +1,137 @@
+*
+ * This file is part of LibCSS.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2017 Lucas Neves <lcneves@gmail.com>
+ */
+
+#include <assert.h>
+#include <string.h>
+
+#include "bytecode/bytecode.h"
+#include "bytecode/opcodes.h"
+#include "parse/properties/properties.h"
+#include "parse/properties/utils.h"
+
+/**
+ * Parse flex-flow
+ *
+ * \param c Parsing context
+ * \param vector Vector of tokens to process
+ * \param ctx Pointer to vector iteration context
+ * \param result Pointer to location to receive resulting style
+ * \return CSS_OK on success,
+ * CSS_NOMEM on memory exhaustion,
+ * CSS_INVALID if the input is not valid
+ *
+ * Post condition: \a *ctx is updated with the next token to process
+ * If the input is invalid, then \a *ctx remains unchanged.
+ */
+
+css_error css__parse_flex_flow(css_language *c,
+ const parserutils_vector *vector, int *ctx,
+ css_style *result)
+{
+ int orig_ctx = *ctx;
+ int prev_ctx;
+ const css_token *token;
+ css_error error;
+ bool direction = true;
+ bool wrap = true;
+ css_style *direction_style;
+ css_style *wrap_style;
+
+ /* Firstly, handle inherit */
+ token = parserutils_vector_peek(vector, *ctx);
+ if (token == NULL)
+ return CSS_INVALID;
+
+ if (is_css_inherit(c, token)) {
+ error = css_stylesheet_style_inherit(result,
+ CSS_PROP_FLEX_DIRECTION);
+ if (error != CSS_OK)
+ return error;
+
+ error = css_stylesheet_style_inherit(result,
+ CSS_PROP_FLEX_WRAP);
+
+ if (error == CSS_OK)
+ parserutils_vector_iterate(vector, ctx);
+
+ return error;
+ }
+
+ /* allocate styles */
+ error = css__stylesheet_style_create(c->sheet, &direction_style);
+ if (error != CSS_OK)
+ return error;
+
+ error = css__stylesheet_style_create(c->sheet, &wrap_style);
+ if (error != CSS_OK) {
+ css__stylesheet_style_destroy(direction_style);
+ return error;
+ }
+
+ /* Attempt to parse the various longhand properties */
+ do {
+ prev_ctx = *ctx;
+ error = CSS_OK;
+
+ /* Ensure that we're not about to parse another inherit */
+ token = parserutils_vector_peek(vector, *ctx);
+ if (token != NULL && is_css_inherit(c, token)) {
+ error = CSS_INVALID;
+ goto css__parse_flex_flow_cleanup;
+ }
+
+ if ((wrap) &&
+ (error = css__parse_flex_wrap(c, vector,
+ ctx, wrap_style)) == CSS_OK) {
+ wrap = false;
+ } else if ((direction) &&
+ (error = css__parse_flex_direction(c, vector,
+ ctx, direction_style)) == CSS_OK) {
+ direction = false;
+ }
+
+ if (error == CSS_OK) {
+ consumeWhitespace(vector, ctx);
+
+ token = parserutils_vector_peek(vector, *ctx);
+ } else {
+ /* Forcibly cause loop to exit */
+ token = NULL;
+ }
+ } while (*ctx != prev_ctx && token != NULL);
+
+
+ /* defaults */
+ if (direction) {
+ error = css__stylesheet_style_appendOPV(direction_style,
+ CSS_PROP_FLEX_DIRECTION,
+ 0, FLEX_DIRECTION_ROW);
+ }
+
+ if (wrap) {
+ error = css__stylesheet_style_appendOPV(wrap_style,
+ CSS_PROP_FLEX_WRAP,
+ 0, FLEX_WRAP_NOWRAP);
+ }
+
+ error = css__stylesheet_merge_style(result, direction_style);
+ if (error != CSS_OK)
+ goto css__parse_flex_flow_cleanup;
+
+ error = css__stylesheet_merge_style(result, wrap_style);
+
+css__parse_flex_flow_cleanup:
+
+ css__stylesheet_style_destroy(wrap_style);
+ css__stylesheet_style_destroy(direction_style);
+
+ if (error != CSS_OK)
+ *ctx = orig_ctx;
+
+ return error;
+}
+