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author | Vincent Sanders <vince@netsurf-browser.org> | 2011-01-02 23:20:31 +0000 |
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committer | Vincent Sanders <vince@netsurf-browser.org> | 2011-01-02 23:20:31 +0000 |
commit | f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e (patch) | |
tree | 4b98d88fc719198ebfa28f37a58fb61e8bddfcb8 /src/parse/properties/cursor.c | |
parent | 606cf0251feacadcaa63191a643dc8fc57a7c613 (diff) | |
download | libcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.gz libcss-f3cf0f579347a16120df8fc1c1ec3cd1f4e6d44e.tar.bz2 |
simple properties split in parse similar to select in preparation for future generation
svn path=/trunk/libcss/; revision=11188
Diffstat (limited to 'src/parse/properties/cursor.c')
-rw-r--r-- | src/parse/properties/cursor.c | 373 |
1 files changed, 373 insertions, 0 deletions
diff --git a/src/parse/properties/cursor.c b/src/parse/properties/cursor.c new file mode 100644 index 0000000..725e7b7 --- /dev/null +++ b/src/parse/properties/cursor.c @@ -0,0 +1,373 @@ +/* + * 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 <string.h> + +#include "bytecode/bytecode.h" +#include "bytecode/opcodes.h" +#include "parse/properties/properties.h" +#include "parse/properties/utils.h" + +/** + * Parse cursor + * + * \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_cursor(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; + uint32_t required_size = sizeof(opv); + int temp_ctx = *ctx; + uint8_t *ptr; + bool match; + + /* [ (URI ',')* IDENT(auto, crosshair, default, pointer, move, e-resize, + * ne-resize, nw-resize, n-resize, se-resize, sw-resize, + * s-resize, w-resize, text, wait, help, progress) ] + * | IDENT(inherit) + */ + + /* Pass 1: validate input and calculate bytecode size */ + token = parserutils_vector_iterate(vector, &temp_ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_URI)) { + *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)) { + flags = FLAG_INHERIT; + } else { + bool first = true; + + /* URI* */ + while (token != NULL && token->type == CSS_TOKEN_URI) { + lwc_string *uri = token->idata; + + if (first == false) { + required_size += sizeof(opv); + } else { + value = CURSOR_URI; + } + required_size += sizeof(uri); + + consumeWhitespace(vector, &temp_ctx); + + /* Expect ',' */ + token = parserutils_vector_iterate(vector, &temp_ctx); + if (token == NULL || tokenIsChar(token, ',') == false) { + *ctx = orig_ctx; + return CSS_INVALID; + } + + consumeWhitespace(vector, &temp_ctx); + + /* Expect either URI or IDENT */ + token = parserutils_vector_iterate(vector, &temp_ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_URI)) { + *ctx = orig_ctx; + return CSS_INVALID; + } + + first = false; + } + + /* IDENT */ + if (token != NULL && token->type == CSS_TOKEN_IDENT) { + if ((lwc_string_caseless_isequal( + token->idata, c->strings[AUTO], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_AUTO; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[CROSSHAIR], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_CROSSHAIR; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[DEFAULT], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_DEFAULT; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[POINTER], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_POINTER; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[MOVE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_MOVE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[E_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_E_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[NE_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_NE_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[NW_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_NW_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[N_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_N_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[SE_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_SE_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[SW_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_SW_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[S_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_S_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[W_RESIZE], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_W_RESIZE; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[LIBCSS_TEXT], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_TEXT; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[WAIT], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_WAIT; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[HELP], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_HELP; + } + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[PROGRESS], + &match) == lwc_error_ok && match)) { + if (first) { + value = CURSOR_PROGRESS; + } + } else { + *ctx = orig_ctx; + return CSS_INVALID; + } + + if (first == false) { + required_size += sizeof(opv); + } + } + } + + opv = buildOPV(CSS_PROP_CURSOR, flags, value); + + /* Allocate result */ + error = css_stylesheet_style_create(c->sheet, required_size, result); + if (error != CSS_OK) { + *ctx = orig_ctx; + return error; + } + + /* Copy OPV to bytecode */ + ptr = (*result)->bytecode; + memcpy(ptr, &opv, sizeof(opv)); + ptr += sizeof(opv); + + /* Pass 2: construct bytecode */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_URI)) { + *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)) { + /* Nothing to do */ + } else { + bool first = true; + + /* URI* */ + while (token != NULL && token->type == CSS_TOKEN_URI) { + lwc_string *uri; + + error = c->sheet->resolve(c->sheet->resolve_pw, + c->sheet->url, + token->idata, &uri); + if (error != CSS_OK) { + *ctx = orig_ctx; + return error; + } + + if (first == false) { + opv = CURSOR_URI; + memcpy(ptr, &opv, sizeof(opv)); + ptr += sizeof(opv); + } + + /* Don't ref URI -- we want to pass ownership to the + * bytecode */ + memcpy(ptr, &uri, sizeof(uri)); + ptr += sizeof(uri); + + consumeWhitespace(vector, ctx); + + /* Expect ',' */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || tokenIsChar(token, ',') == false) { + *ctx = orig_ctx; + return CSS_INVALID; + } + + consumeWhitespace(vector, ctx); + + /* Expect either URI or IDENT */ + token = parserutils_vector_iterate(vector, ctx); + if (token == NULL || (token->type != CSS_TOKEN_IDENT && + token->type != CSS_TOKEN_URI)) { + *ctx = orig_ctx; + return CSS_INVALID; + } + + first = false; + } + + /* IDENT */ + if (token != NULL && token->type == CSS_TOKEN_IDENT) { + if ((lwc_string_caseless_isequal( + token->idata, c->strings[AUTO], + &match) == lwc_error_ok && match)) { + opv = CURSOR_AUTO; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[CROSSHAIR], + &match) == lwc_error_ok && match)) { + opv = CURSOR_CROSSHAIR; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[DEFAULT], + &match) == lwc_error_ok && match)) { + opv = CURSOR_DEFAULT; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[POINTER], + &match) == lwc_error_ok && match)) { + opv = CURSOR_POINTER; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[MOVE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_MOVE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[E_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_E_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[NE_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_NE_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[NW_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_NW_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[N_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_N_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[SE_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_SE_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[SW_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_SW_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[S_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_S_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[W_RESIZE], + &match) == lwc_error_ok && match)) { + opv = CURSOR_W_RESIZE; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[LIBCSS_TEXT], + &match) == lwc_error_ok && match)) { + opv = CURSOR_TEXT; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[WAIT], + &match) == lwc_error_ok && match)) { + opv = CURSOR_WAIT; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[HELP], + &match) == lwc_error_ok && match)) { + opv = CURSOR_HELP; + } else if ((lwc_string_caseless_isequal( + token->idata, c->strings[PROGRESS], + &match) == lwc_error_ok && match)) { + opv = CURSOR_PROGRESS; + } else { + *ctx = orig_ctx; + return CSS_INVALID; + } + + if (first == false) { + memcpy(ptr, &opv, sizeof(opv)); + ptr += sizeof(opv); + } + } + } + + return CSS_OK; +} + |