simple properties split in parse similar to select in preparation for future generation

svn path=/trunk/libcss/; revision=11188

1 files changed, 111 insertions, 0 deletions

diff --git a/src/parse/properties/font_weight.c b/src/parse/properties/font_weight.c
new file mode 100644
index 0000000..df35c0d
--- /dev/null
+++ b/src/parse/properties/font_weight.c
@@ -0,0 +1,111 @@
+/*
+ * This file is part of LibCSS.
+ * Licensed under the MIT License,
+ *		  http://www.opensource.org/licenses/mit-license.php
+ * Copyright 2009 John-Mark Bell <jmb@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 font-weight
+ *
+ * \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 parse_font_weight(css_language *c, 
+		const parserutils_vector *vector, int *ctx, 
+		css_style **result)
+{
+	int orig_ctx = *ctx;
+	css_error error;
+	const css_token *token;
+	uint8_t flags = 0;
+	uint16_t value = 0;
+	uint32_t opv;
+	bool match;
+
+	/* NUMBER (100, 200, 300, 400, 500, 600, 700, 800, 900) | 
+	 * IDENT (normal, bold, bolder, lighter, inherit) */
+	token = parserutils_vector_iterate(vector, ctx);
+	if (token == NULL || (token->type != CSS_TOKEN_IDENT &&
+			token->type != CSS_TOKEN_NUMBER)) {
+		*ctx = orig_ctx;
+		return CSS_INVALID;
+	}
+
+	if ((lwc_string_caseless_isequal(
+			token->idata, c->strings[INHERIT],
+			&match) == lwc_error_ok && match)) {
+		flags |= FLAG_INHERIT;
+	} else if (token->type == CSS_TOKEN_NUMBER) {
+		size_t consumed = 0;
+		css_fixed num = number_from_lwc_string(token->idata, 
+				true, &consumed);
+		/* Invalid if there are trailing characters */
+		if (consumed != lwc_string_length(token->idata)) {
+			*ctx = orig_ctx;
+			return CSS_INVALID;
+		}
+
+		switch (FIXTOINT(num)) {
+		case 100: value = FONT_WEIGHT_100; break;
+		case 200: value = FONT_WEIGHT_200; break;
+		case 300: value = FONT_WEIGHT_300; break;
+		case 400: value = FONT_WEIGHT_400; break;
+		case 500: value = FONT_WEIGHT_500; break;
+		case 600: value = FONT_WEIGHT_600; break;
+		case 700: value = FONT_WEIGHT_700; break;
+		case 800: value = FONT_WEIGHT_800; break;
+		case 900: value = FONT_WEIGHT_900; break;
+		default: *ctx = orig_ctx; return CSS_INVALID;
+		}
+	} else if ((lwc_string_caseless_isequal(
+			token->idata, c->strings[NORMAL],
+			&match) == lwc_error_ok && match)) {
+		value = FONT_WEIGHT_NORMAL;
+	} else if ((lwc_string_caseless_isequal(
+			token->idata, c->strings[BOLD],
+			&match) == lwc_error_ok && match)) {
+		value = FONT_WEIGHT_BOLD;
+	} else if ((lwc_string_caseless_isequal(
+			token->idata, c->strings[BOLDER],
+			&match) == lwc_error_ok && match)) {
+		value = FONT_WEIGHT_BOLDER;
+	} else if ((lwc_string_caseless_isequal(
+			token->idata, c->strings[LIGHTER],
+			&match) == lwc_error_ok && match)) {
+		value = FONT_WEIGHT_LIGHTER;
+	} else {
+		*ctx = orig_ctx;
+		return CSS_INVALID;
+	}
+
+	opv = buildOPV(CSS_PROP_FONT_WEIGHT, flags, value);
+
+	/* Allocate result */
+	error = css_stylesheet_style_create(c->sheet, sizeof(opv), result);
+	if (error != CSS_OK) {
+		*ctx = orig_ctx;
+		return error;
+	}
+
+	/* Copy the bytecode to it */
+	memcpy((*result)->bytecode, &opv, sizeof(opv));
+
+	return CSS_OK;
+}