| 0,0 → 1,163 |
|---|
| /* |
| * 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 outline 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_outline(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 color = true; |
| bool style = true; |
| bool width = true; |
| css_style *color_style; |
| css_style *style_style; |
| css_style *width_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_OUTLINE_COLOR); |
| if (error != CSS_OK) |
| return error; |
| |
| error = css_stylesheet_style_inherit(result, CSS_PROP_OUTLINE_STYLE); |
| if (error != CSS_OK) |
| return error; |
| |
| error = css_stylesheet_style_inherit(result, CSS_PROP_OUTLINE_WIDTH); |
| |
| if (error == CSS_OK) |
| parserutils_vector_iterate(vector, ctx); |
| |
| return error; |
| } |
| |
| /* allocate styles */ |
| error = css__stylesheet_style_create(c->sheet, &color_style); |
| if (error != CSS_OK) |
| return error; |
| |
| error = css__stylesheet_style_create(c->sheet, &style_style); |
| if (error != CSS_OK) { |
| css__stylesheet_style_destroy(color_style); |
| return error; |
| } |
| |
| error = css__stylesheet_style_create(c->sheet, &width_style); |
| if (error != CSS_OK) { |
| css__stylesheet_style_destroy(color_style); |
| css__stylesheet_style_destroy(style_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_outline_cleanup; |
| } |
| |
| if ((color) && |
| (error = css__parse_outline_color(c, vector, ctx, |
| color_style)) == CSS_OK) { |
| color = false; |
| } else if ((style) && |
| (error = css__parse_outline_style(c, vector, |
| ctx, style_style)) == CSS_OK) { |
| style = false; |
| } else if ((width) && |
| (error = css__parse_outline_width(c, vector, |
| ctx, width_style)) == CSS_OK) { |
| width = 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 (color) { |
| error = css__stylesheet_style_appendOPV(color_style, |
| CSS_PROP_OUTLINE_COLOR, |
| 0, OUTLINE_COLOR_INVERT); |
| } |
| |
| if (style) { |
| error = css__stylesheet_style_appendOPV(style_style, |
| CSS_PROP_OUTLINE_STYLE, |
| 0, OUTLINE_STYLE_NONE); |
| } |
| |
| if (width) { |
| error = css__stylesheet_style_appendOPV(width_style, |
| CSS_PROP_OUTLINE_WIDTH, |
| 0, OUTLINE_WIDTH_MEDIUM); |
| } |
| |
| |
| error = css__stylesheet_merge_style(result, color_style); |
| if (error != CSS_OK) |
| goto css__parse_outline_cleanup; |
| |
| error = css__stylesheet_merge_style(result, style_style); |
| if (error != CSS_OK) |
| goto css__parse_outline_cleanup; |
| |
| error = css__stylesheet_merge_style(result, width_style); |
| |
| |
| css__parse_outline_cleanup: |
| |
| css__stylesheet_style_destroy(width_style); |
| css__stylesheet_style_destroy(style_style); |
| css__stylesheet_style_destroy(color_style); |
| |
| if (error != CSS_OK) |
| *ctx = orig_ctx; |
| |
| return error; |
| } |