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

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

1 files changed, 245 insertions, 0 deletions

diff --git a/src/parse/properties/azimuth.c b/src/parse/properties/azimuth.c
new file mode 100644
index 0000000..c5465bd
--- /dev/null
+++ b/src/parse/properties/azimuth.c
@@ -0,0 +1,245 @@
+/*
+ * 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 azimuth
+ *
+ * \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_azimuth(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;
+	css_fixed length = 0;
+	uint32_t unit = 0;
+	uint32_t required_size;
+	bool match;
+
+	/* angle | [ IDENT(left-side, far-left, left, center-left, center, 
+	 *		   center-right, right, far-right, right-side) || 
+	 *	   IDENT(behind) 
+	 *	 ] 
+	 *	 | IDENT(leftwards, rightwards, inherit)
+	 */
+	token = parserutils_vector_peek(vector, *ctx);
+	if (token == NULL) {
+		*ctx = orig_ctx;
+		return CSS_INVALID;
+	}
+
+	if (token->type == CSS_TOKEN_IDENT &&
+		(lwc_string_caseless_isequal(token->idata, c->strings[INHERIT],
+			&match) == lwc_error_ok && match)) {
+		parserutils_vector_iterate(vector, ctx);
+		flags = FLAG_INHERIT;
+	} else if (token->type == CSS_TOKEN_IDENT &&
+		(lwc_string_caseless_isequal(token->idata, c->strings[LEFTWARDS],
+			&match) == lwc_error_ok && match)) {
+		parserutils_vector_iterate(vector, ctx);
+		value = AZIMUTH_LEFTWARDS;
+	} else if (token->type == CSS_TOKEN_IDENT &&
+		(lwc_string_caseless_isequal(token->idata, c->strings[RIGHTWARDS],
+			&match) == lwc_error_ok && match)) {
+		parserutils_vector_iterate(vector, ctx);
+		value = AZIMUTH_RIGHTWARDS;
+	} else if (token->type == CSS_TOKEN_IDENT) {
+		parserutils_vector_iterate(vector, ctx);
+
+		/* Now, we may have one of the other keywords or behind,
+		 * potentially followed by behind or other keyword, 
+		 * respectively */
+		if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[LEFT_SIDE],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_LEFT_SIDE;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[FAR_LEFT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_FAR_LEFT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[LEFT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_LEFT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[CENTER_LEFT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_CENTER_LEFT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[CENTER],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_CENTER;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[CENTER_RIGHT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_CENTER_RIGHT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[RIGHT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_RIGHT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[FAR_RIGHT],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_FAR_RIGHT;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[RIGHT_SIDE],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_RIGHT_SIDE;
+		} else if ((lwc_string_caseless_isequal(
+				token->idata, c->strings[BEHIND],
+				&match) == lwc_error_ok && match)) {
+			value = AZIMUTH_BEHIND;
+		} else {
+			*ctx = orig_ctx;
+			return CSS_INVALID;
+		}
+
+		consumeWhitespace(vector, ctx);
+
+		/* Get potential following token */
+		token = parserutils_vector_peek(vector, *ctx);
+
+		if (token != NULL && token->type == CSS_TOKEN_IDENT &&
+				value == AZIMUTH_BEHIND) {
+			parserutils_vector_iterate(vector, ctx);
+
+			if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[LEFT_SIDE],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_LEFT_SIDE;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[FAR_LEFT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_FAR_LEFT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[LEFT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_LEFT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[CENTER_LEFT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_CENTER_LEFT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[CENTER],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_CENTER;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[CENTER_RIGHT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_CENTER_RIGHT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[RIGHT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_RIGHT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[FAR_RIGHT],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_FAR_RIGHT;
+			} else if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[RIGHT_SIDE],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_RIGHT_SIDE;
+			} else {
+				*ctx = orig_ctx;
+				return CSS_INVALID;
+			}
+		} else if (token != NULL && token->type == CSS_TOKEN_IDENT &&
+				value != AZIMUTH_BEHIND) {
+			parserutils_vector_iterate(vector, ctx);
+
+			if ((lwc_string_caseless_isequal(
+					token->idata, c->strings[BEHIND],
+					&match) == lwc_error_ok && match)) {
+				value |= AZIMUTH_BEHIND;
+			} else {
+				*ctx = orig_ctx;
+				return CSS_INVALID;
+			}
+		} else if ((token == NULL || token->type != CSS_TOKEN_IDENT) &&
+				value == AZIMUTH_BEHIND) {
+			value |= AZIMUTH_CENTER;
+		}
+	} else {
+		error = parse_unit_specifier(c, vector, ctx, UNIT_DEG, 
+				&length, &unit);
+		if (error != CSS_OK) {
+			*ctx = orig_ctx;
+			return error;
+		}
+
+		if ((unit & UNIT_ANGLE) == false) {
+			*ctx = orig_ctx;
+			return CSS_INVALID;
+		}
+
+		/* Valid angles lie between -360 and 360 degrees */
+		if (unit == UNIT_DEG) {
+			if (length < FMULI(F_360, -1) || length > F_360) {
+				*ctx = orig_ctx;
+				return CSS_INVALID;
+			}
+		} else if (unit == UNIT_GRAD) {
+			if (length < FMULI(F_400, -1) || length > F_400) {
+				*ctx = orig_ctx;
+				return CSS_INVALID;
+			}
+		} else if (unit == UNIT_RAD) {
+			if (length < FMULI(F_2PI, -1) || length > F_2PI) {
+				*ctx = orig_ctx;
+				return CSS_INVALID;
+			}
+		}
+
+		value = AZIMUTH_ANGLE;
+	}
+
+	opv = buildOPV(CSS_PROP_AZIMUTH, flags, value);
+
+	required_size = sizeof(opv);
+	if ((flags & FLAG_INHERIT) == false && value == AZIMUTH_ANGLE)
+		required_size += sizeof(length) + sizeof(unit);
+
+	/* Allocate result */
+	error = css_stylesheet_style_create(c->sheet, required_size, result);
+	if (error != CSS_OK) {
+		*ctx = orig_ctx;
+		return error;
+	}
+
+	/* Copy the bytecode to it */
+	memcpy((*result)->bytecode, &opv, sizeof(opv));
+	if ((flags & FLAG_INHERIT) == false && value == AZIMUTH_ANGLE) {
+		memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv),
+				&length, sizeof(length));
+		memcpy(((uint8_t *) (*result)->bytecode) + sizeof(opv) +
+				sizeof(length), &unit, sizeof(unit));
+	}
+
+	return CSS_OK;
+}