node_modules

node_modules/css-tree/lib/parser/create.js

@@ -0,0 +1,177 @@
+'use strict';
+
+var Tokenizer = require('../tokenizer');
+var List = require('../utils/list');
+var sequence = require('./sequence');
+var noop = function() {};
+
+function createParseContext(name) {
+    return function() {
+        return this[name]();
+    };
+}
+
+function processConfig(config) {
+    var parserConfig = {
+        context: {},
+        scope: {},
+        atrule: {},
+        pseudo: {}
+    };
+
+    if (config.parseContext) {
+        for (var name in config.parseContext) {
+            switch (typeof config.parseContext[name]) {
+                case 'function':
+                    parserConfig.context[name] = config.parseContext[name];
+                    break;
+
+                case 'string':
+                    parserConfig.context[name] = createParseContext(config.parseContext[name]);
+                    break;
+            }
+        }
+    }
+
+    if (config.scope) {
+        for (var name in config.scope) {
+            parserConfig.scope[name] = config.scope[name];
+        }
+    }
+
+    if (config.atrule) {
+        for (var name in config.atrule) {
+            var atrule = config.atrule[name];
+
+            if (atrule.parse) {
+                parserConfig.atrule[name] = atrule.parse;
+            }
+        }
+    }
+
+    if (config.pseudo) {
+        for (var name in config.pseudo) {
+            var pseudo = config.pseudo[name];
+
+            if (pseudo.parse) {
+                parserConfig.pseudo[name] = pseudo.parse;
+            }
+        }
+    }
+
+    if (config.node) {
+        for (var name in config.node) {
+            parserConfig[name] = config.node[name].parse;
+        }
+    }
+
+    return parserConfig;
+}
+
+module.exports = function createParser(config) {
+    var parser = {
+        scanner: new Tokenizer(),
+        filename: '<unknown>',
+        needPositions: false,
+        onParseError: noop,
+        onParseErrorThrow: false,
+        parseAtrulePrelude: true,
+        parseRulePrelude: true,
+        parseValue: true,
+        parseCustomProperty: false,
+
+        readSequence: sequence,
+
+        createList: function() {
+            return new List();
+        },
+        createSingleNodeList: function(node) {
+            return new List().appendData(node);
+        },
+        getFirstListNode: function(list) {
+            return list && list.first();
+        },
+        getLastListNode: function(list) {
+            return list.last();
+        },
+
+        parseWithFallback: function(consumer, fallback) {
+            var startToken = this.scanner.currentToken;
+
+            try {
+                return consumer.call(this);
+            } catch (e) {
+                if (this.onParseErrorThrow) {
+                    throw e;
+                }
+
+                var fallbackNode = fallback.call(this, startToken);
+
+                this.onParseErrorThrow = true;
+                this.onParseError(e, fallbackNode);
+                this.onParseErrorThrow = false;
+
+                return fallbackNode;
+            }
+        },
+
+        getLocation: function(start, end) {
+            if (this.needPositions) {
+                return this.scanner.getLocationRange(
+                    start,
+                    end,
+                    this.filename
+                );
+            }
+
+            return null;
+        },
+        getLocationFromList: function(list) {
+            if (this.needPositions) {
+                var head = this.getFirstListNode(list);
+                var tail = this.getLastListNode(list);
+                return this.scanner.getLocationRange(
+                    head !== null ? head.loc.start.offset - this.scanner.startOffset : this.scanner.tokenStart,
+                    tail !== null ? tail.loc.end.offset - this.scanner.startOffset : this.scanner.tokenStart,
+                    this.filename
+                );
+            }
+
+            return null;
+        }
+    };
+
+    config = processConfig(config || {});
+    for (var key in config) {
+        parser[key] = config[key];
+    }
+
+    return function(source, options) {
+        options = options || {};
+
+        var context = options.context || 'default';
+        var ast;
+
+        parser.scanner.setSource(source, options.offset, options.line, options.column);
+        parser.filename = options.filename || '<unknown>';
+        parser.needPositions = Boolean(options.positions);
+        parser.onParseError = typeof options.onParseError === 'function' ? options.onParseError : noop;
+        parser.onParseErrorThrow = false;
+        parser.parseAtrulePrelude = 'parseAtrulePrelude' in options ? Boolean(options.parseAtrulePrelude) : true;
+        parser.parseRulePrelude = 'parseRulePrelude' in options ? Boolean(options.parseRulePrelude) : true;
+        parser.parseValue = 'parseValue' in options ? Boolean(options.parseValue) : true;
+        parser.parseCustomProperty = 'parseCustomProperty' in options ? Boolean(options.parseCustomProperty) : false;
+
+        if (!parser.context.hasOwnProperty(context)) {
+            throw new Error('Unknown context `' + context + '`');
+        }
+
+        ast = parser.context[context].call(parser, options);
+
+        if (!parser.scanner.eof) {
+            parser.scanner.error();
+        }
+
+        return ast;
+    };
+};

node_modules/css-tree/lib/parser/index.js

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+var createParser = require('./create');
+var config = require('../syntax/config/parser');
+
+module.exports = createParser(config);

node_modules/css-tree/lib/parser/sequence.js

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+var TYPE = require('../tokenizer').TYPE;
+var WHITESPACE = TYPE.WhiteSpace;
+var COMMENT = TYPE.Comment;
+
+module.exports = function readSequence(recognizer) {
+    var children = this.createList();
+    var child = null;
+    var context = {
+        recognizer: recognizer,
+        space: null,
+        ignoreWS: false,
+        ignoreWSAfter: false
+    };
+
+    this.scanner.skipSC();
+
+    while (!this.scanner.eof) {
+        switch (this.scanner.tokenType) {
+            case COMMENT:
+                this.scanner.next();
+                continue;
+
+            case WHITESPACE:
+                if (context.ignoreWS) {
+                    this.scanner.next();
+                } else {
+                    context.space = this.WhiteSpace();
+                }
+                continue;
+        }
+
+        child = recognizer.getNode.call(this, context);
+
+        if (child === undefined) {
+            break;
+        }
+
+        if (context.space !== null) {
+            children.push(context.space);
+            context.space = null;
+        }
+
+        children.push(child);
+
+        if (context.ignoreWSAfter) {
+            context.ignoreWSAfter = false;
+            context.ignoreWS = true;
+        } else {
+            context.ignoreWS = false;
+        }
+    }
+
+    return children;
+};