diff options
Diffstat (limited to 'vanilla/node_modules/css-tree/cjs/generator')
4 files changed, 376 insertions, 0 deletions
diff --git a/vanilla/node_modules/css-tree/cjs/generator/create.cjs b/vanilla/node_modules/css-tree/cjs/generator/create.cjs new file mode 100644 index 0000000..87a54b2 --- /dev/null +++ b/vanilla/node_modules/css-tree/cjs/generator/create.cjs @@ -0,0 +1,102 @@ +'use strict'; + +const index = require('../tokenizer/index.cjs'); +const sourceMap = require('./sourceMap.cjs'); +const tokenBefore = require('./token-before.cjs'); +const types = require('../tokenizer/types.cjs'); + +const REVERSESOLIDUS = 0x005c; // U+005C REVERSE SOLIDUS (\) + +function processChildren(node, delimeter) { + if (typeof delimeter === 'function') { + let prev = null; + + node.children.forEach(node => { + if (prev !== null) { + delimeter.call(this, prev); + } + + this.node(node); + prev = node; + }); + + return; + } + + node.children.forEach(this.node, this); +} + +function processChunk(chunk) { + index.tokenize(chunk, (type, start, end) => { + this.token(type, chunk.slice(start, end)); + }); +} + +function createGenerator(config) { + const types$1 = new Map(); + + for (let [name, item] of Object.entries(config.node)) { + const fn = item.generate || item; + + if (typeof fn === 'function') { + types$1.set(name, item.generate || item); + } + } + + return function(node, options) { + let buffer = ''; + let prevCode = 0; + let handlers = { + node(node) { + if (types$1.has(node.type)) { + types$1.get(node.type).call(publicApi, node); + } else { + throw new Error('Unknown node type: ' + node.type); + } + }, + tokenBefore: tokenBefore.safe, + token(type, value) { + prevCode = this.tokenBefore(prevCode, type, value); + + this.emit(value, type, false); + + if (type === types.Delim && value.charCodeAt(0) === REVERSESOLIDUS) { + this.emit('\n', types.WhiteSpace, true); + } + }, + emit(value) { + buffer += value; + }, + result() { + return buffer; + } + }; + + if (options) { + if (typeof options.decorator === 'function') { + handlers = options.decorator(handlers); + } + + if (options.sourceMap) { + handlers = sourceMap.generateSourceMap(handlers); + } + + if (options.mode in tokenBefore) { + handlers.tokenBefore = tokenBefore[options.mode]; + } + } + + const publicApi = { + node: (node) => handlers.node(node), + children: processChildren, + token: (type, value) => handlers.token(type, value), + tokenize: processChunk + }; + + handlers.node(node); + + return handlers.result(); + }; +} + +exports.createGenerator = createGenerator; diff --git a/vanilla/node_modules/css-tree/cjs/generator/index.cjs b/vanilla/node_modules/css-tree/cjs/generator/index.cjs new file mode 100644 index 0000000..5c87cd3 --- /dev/null +++ b/vanilla/node_modules/css-tree/cjs/generator/index.cjs @@ -0,0 +1,8 @@ +'use strict'; + +const create = require('./create.cjs'); +const generator = require('../syntax/config/generator.cjs'); + +const index = create.createGenerator(generator); + +module.exports = index; diff --git a/vanilla/node_modules/css-tree/cjs/generator/sourceMap.cjs b/vanilla/node_modules/css-tree/cjs/generator/sourceMap.cjs new file mode 100644 index 0000000..efbc5b9 --- /dev/null +++ b/vanilla/node_modules/css-tree/cjs/generator/sourceMap.cjs @@ -0,0 +1,96 @@ +'use strict'; + +const sourceMapGenerator_js = require('source-map-js/lib/source-map-generator.js'); + +const trackNodes = new Set(['Atrule', 'Selector', 'Declaration']); + +function generateSourceMap(handlers) { + const map = new sourceMapGenerator_js.SourceMapGenerator(); + const generated = { + line: 1, + column: 0 + }; + const original = { + line: 0, // should be zero to add first mapping + column: 0 + }; + const activatedGenerated = { + line: 1, + column: 0 + }; + const activatedMapping = { + generated: activatedGenerated + }; + let line = 1; + let column = 0; + let sourceMappingActive = false; + + const origHandlersNode = handlers.node; + handlers.node = function(node) { + if (node.loc && node.loc.start && trackNodes.has(node.type)) { + const nodeLine = node.loc.start.line; + const nodeColumn = node.loc.start.column - 1; + + if (original.line !== nodeLine || + original.column !== nodeColumn) { + original.line = nodeLine; + original.column = nodeColumn; + + generated.line = line; + generated.column = column; + + if (sourceMappingActive) { + sourceMappingActive = false; + if (generated.line !== activatedGenerated.line || + generated.column !== activatedGenerated.column) { + map.addMapping(activatedMapping); + } + } + + sourceMappingActive = true; + map.addMapping({ + source: node.loc.source, + original, + generated + }); + } + } + + origHandlersNode.call(this, node); + + if (sourceMappingActive && trackNodes.has(node.type)) { + activatedGenerated.line = line; + activatedGenerated.column = column; + } + }; + + const origHandlersEmit = handlers.emit; + handlers.emit = function(value, type, auto) { + for (let i = 0; i < value.length; i++) { + if (value.charCodeAt(i) === 10) { // \n + line++; + column = 0; + } else { + column++; + } + } + + origHandlersEmit(value, type, auto); + }; + + const origHandlersResult = handlers.result; + handlers.result = function() { + if (sourceMappingActive) { + map.addMapping(activatedMapping); + } + + return { + css: origHandlersResult(), + map + }; + }; + + return handlers; +} + +exports.generateSourceMap = generateSourceMap; diff --git a/vanilla/node_modules/css-tree/cjs/generator/token-before.cjs b/vanilla/node_modules/css-tree/cjs/generator/token-before.cjs new file mode 100644 index 0000000..87bf4a3 --- /dev/null +++ b/vanilla/node_modules/css-tree/cjs/generator/token-before.cjs @@ -0,0 +1,170 @@ +'use strict'; + +const types = require('../tokenizer/types.cjs'); + +const PLUSSIGN = 0x002B; // U+002B PLUS SIGN (+) +const HYPHENMINUS = 0x002D; // U+002D HYPHEN-MINUS (-) + +const code = (type, value) => { + if (type === types.Delim) { + type = value; + } + + if (typeof type === 'string') { + const charCode = type.charCodeAt(0); + return charCode > 0x7F ? 0x8000 : charCode << 8; + } + + return type; +}; + +// https://www.w3.org/TR/css-syntax-3/#serialization +// The only requirement for serialization is that it must "round-trip" with parsing, +// that is, parsing the stylesheet must produce the same data structures as parsing, +// serializing, and parsing again, except for consecutive <whitespace-token>s, +// which may be collapsed into a single token. + +const specPairs = [ + [types.Ident, types.Ident], + [types.Ident, types.Function], + [types.Ident, types.Url], + [types.Ident, types.BadUrl], + [types.Ident, '-'], + [types.Ident, types.Number], + [types.Ident, types.Percentage], + [types.Ident, types.Dimension], + [types.Ident, types.CDC], + [types.Ident, types.LeftParenthesis], + + [types.AtKeyword, types.Ident], + [types.AtKeyword, types.Function], + [types.AtKeyword, types.Url], + [types.AtKeyword, types.BadUrl], + [types.AtKeyword, '-'], + [types.AtKeyword, types.Number], + [types.AtKeyword, types.Percentage], + [types.AtKeyword, types.Dimension], + [types.AtKeyword, types.CDC], + + [types.Hash, types.Ident], + [types.Hash, types.Function], + [types.Hash, types.Url], + [types.Hash, types.BadUrl], + [types.Hash, '-'], + [types.Hash, types.Number], + [types.Hash, types.Percentage], + [types.Hash, types.Dimension], + [types.Hash, types.CDC], + + [types.Dimension, types.Ident], + [types.Dimension, types.Function], + [types.Dimension, types.Url], + [types.Dimension, types.BadUrl], + [types.Dimension, '-'], + [types.Dimension, types.Number], + [types.Dimension, types.Percentage], + [types.Dimension, types.Dimension], + [types.Dimension, types.CDC], + + ['#', types.Ident], + ['#', types.Function], + ['#', types.Url], + ['#', types.BadUrl], + ['#', '-'], + ['#', types.Number], + ['#', types.Percentage], + ['#', types.Dimension], + ['#', types.CDC], // https://github.com/w3c/csswg-drafts/pull/6874 + + ['-', types.Ident], + ['-', types.Function], + ['-', types.Url], + ['-', types.BadUrl], + ['-', '-'], + ['-', types.Number], + ['-', types.Percentage], + ['-', types.Dimension], + ['-', types.CDC], // https://github.com/w3c/csswg-drafts/pull/6874 + + [types.Number, types.Ident], + [types.Number, types.Function], + [types.Number, types.Url], + [types.Number, types.BadUrl], + [types.Number, types.Number], + [types.Number, types.Percentage], + [types.Number, types.Dimension], + [types.Number, '%'], + [types.Number, types.CDC], // https://github.com/w3c/csswg-drafts/pull/6874 + + ['@', types.Ident], + ['@', types.Function], + ['@', types.Url], + ['@', types.BadUrl], + ['@', '-'], + ['@', types.CDC], // https://github.com/w3c/csswg-drafts/pull/6874 + + ['.', types.Number], + ['.', types.Percentage], + ['.', types.Dimension], + + ['+', types.Number], + ['+', types.Percentage], + ['+', types.Dimension], + + ['/', '*'] +]; +// validate with scripts/generate-safe +const safePairs = specPairs.concat([ + [types.Ident, types.Hash], + + [types.Dimension, types.Hash], + + [types.Hash, types.Hash], + + [types.AtKeyword, types.LeftParenthesis], + [types.AtKeyword, types.String], + [types.AtKeyword, types.Colon], + + [types.Percentage, types.Percentage], + [types.Percentage, types.Dimension], + [types.Percentage, types.Function], + [types.Percentage, '-'], + + [types.RightParenthesis, types.Ident], + [types.RightParenthesis, types.Function], + [types.RightParenthesis, types.Percentage], + [types.RightParenthesis, types.Dimension], + [types.RightParenthesis, types.Hash], + [types.RightParenthesis, '-'] +]); + +function createMap(pairs) { + const isWhiteSpaceRequired = new Set( + pairs.map(([prev, next]) => (code(prev) << 16 | code(next))) + ); + + return function(prevCode, type, value) { + const nextCode = code(type, value); + const nextCharCode = value.charCodeAt(0); + const emitWs = + (nextCharCode === HYPHENMINUS && + type !== types.Ident && + type !== types.Function && + type !== types.CDC) || + (nextCharCode === PLUSSIGN) + ? isWhiteSpaceRequired.has(prevCode << 16 | nextCharCode << 8) + : isWhiteSpaceRequired.has(prevCode << 16 | nextCode); + + if (emitWs) { + this.emit(' ', types.WhiteSpace, true); + } + + return nextCode; + }; +} + +const spec = createMap(specPairs); +const safe = createMap(safePairs); + +exports.safe = safe; +exports.spec = spec; |