summaryrefslogtreecommitdiff
path: root/src/parse/properties/overflow.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/parse/properties/overflow.c')
-rw-r--r--src/parse/properties/overflow.c97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/parse/properties/overflow.c b/src/parse/properties/overflow.c
new file mode 100644
index 0000000..ca133ed
--- /dev/null
+++ b/src/parse/properties/overflow.c
@@ -0,0 +1,97 @@
+/*
+ * This file is part of LibCSS.
+ * Licensed under the MIT License,
+ * http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2012 Michael Drake <tlsa@netsurf-browser.org>
+ */
+
+#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 overflow shorthand
+ *
+ * \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_overflow(css_language *c,
+ const parserutils_vector *vector, int *ctx,
+ css_style *result)
+{
+ int orig_ctx = *ctx;
+ css_error error1, error2 = CSS_OK;
+ const css_token *token;
+ bool match;
+
+ token = parserutils_vector_iterate(vector, ctx);
+ if ((token == NULL) || ((token->type != CSS_TOKEN_IDENT))) {
+ *ctx = orig_ctx;
+ return CSS_INVALID;
+ }
+
+ if ((lwc_string_caseless_isequal(token->idata,
+ c->strings[INHERIT], &match) == lwc_error_ok &&
+ match)) {
+ error1 = css_stylesheet_style_inherit(result,
+ CSS_PROP_OVERFLOW_X);
+ error2 = css_stylesheet_style_inherit(result,
+ CSS_PROP_OVERFLOW_Y);
+
+ } else if ((lwc_string_caseless_isequal(token->idata,
+ c->strings[VISIBLE], &match) == lwc_error_ok &&
+ match)) {
+ error1 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_X, 0, OVERFLOW_VISIBLE);
+ error2 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_Y, 0, OVERFLOW_VISIBLE);
+
+ } else if ((lwc_string_caseless_isequal(token->idata,
+ c->strings[HIDDEN], &match) == lwc_error_ok &&
+ match)) {
+ error1 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_X, 0, OVERFLOW_HIDDEN);
+ error2 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_Y, 0, OVERFLOW_HIDDEN);
+
+ } else if ((lwc_string_caseless_isequal(token->idata,
+ c->strings[SCROLL], &match) == lwc_error_ok &&
+ match)) {
+ error1 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_X, 0, OVERFLOW_SCROLL);
+ error2 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_Y, 0, OVERFLOW_SCROLL);
+
+ } else if ((lwc_string_caseless_isequal(token->idata,
+ c->strings[AUTO], &match) == lwc_error_ok &&
+ match)) {
+ error1 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_X, 0, OVERFLOW_AUTO);
+ error2 = css__stylesheet_style_appendOPV(result,
+ CSS_PROP_OVERFLOW_Y, 0, OVERFLOW_AUTO);
+
+ } else {
+ error1 = CSS_INVALID;
+ }
+
+ if (error2 != CSS_OK)
+ error1 = error2;
+
+ if (error1 != CSS_OK)
+ *ctx = orig_ctx;
+
+ return error1;
+}
+