77 lines
2.0 KiB
JavaScript
77 lines
2.0 KiB
JavaScript
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var List = require('../utils/list');
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var Tokenizer = require('../tokenizer');
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var Lexer = require('../lexer/Lexer');
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var grammar = require('../lexer/grammar');
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var createParser = require('../parser/create');
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var createGenerator = require('../generator/create');
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var createConvertor = require('../convertor/create');
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var createWalker = require('../walker/create');
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var clone = require('../utils/clone');
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var names = require('../utils/names');
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var mix = require('./config/mix');
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function assign(dest, src) {
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for (var key in src) {
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dest[key] = src[key];
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}
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return dest;
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}
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function createSyntax(config) {
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var parse = createParser(config);
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var walk = createWalker(config);
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var generate = createGenerator(config);
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var convert = createConvertor(walk);
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var syntax = {
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List: List,
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Tokenizer: Tokenizer,
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Lexer: Lexer,
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vendorPrefix: names.vendorPrefix,
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keyword: names.keyword,
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property: names.property,
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isCustomProperty: names.isCustomProperty,
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grammar: grammar,
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lexer: null,
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createLexer: function(config) {
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return new Lexer(config, syntax, syntax.lexer.structure);
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},
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parse: parse,
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walk: walk,
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generate: generate,
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clone: clone,
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fromPlainObject: convert.fromPlainObject,
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toPlainObject: convert.toPlainObject,
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createSyntax: function(config) {
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return createSyntax(mix({}, config));
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},
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fork: function(extension) {
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var base = mix({}, config); // copy of config
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return createSyntax(
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typeof extension === 'function'
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? extension(base, assign)
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: mix(base, extension)
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);
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}
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};
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syntax.lexer = new Lexer({
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generic: true,
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types: config.types,
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properties: config.properties,
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node: config.node
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}, syntax);
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return syntax;
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};
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exports.create = function(config) {
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return createSyntax(mix({}, config));
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};
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