190 lines
4.3 KiB
JavaScript
Executable File
190 lines
4.3 KiB
JavaScript
Executable File
function walkRules(node, item, list) {
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switch (node.type) {
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case 'StyleSheet':
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var oldStylesheet = this.stylesheet;
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this.stylesheet = node;
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node.rules.each(walkRules, this);
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this.stylesheet = oldStylesheet;
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break;
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case 'Atrule':
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if (node.block !== null) {
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walkRules.call(this, node.block);
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}
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this.fn(node, item, list);
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break;
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case 'Ruleset':
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this.fn(node, item, list);
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break;
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}
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}
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function walkRulesRight(node, item, list) {
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switch (node.type) {
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case 'StyleSheet':
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var oldStylesheet = this.stylesheet;
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this.stylesheet = node;
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node.rules.eachRight(walkRulesRight, this);
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this.stylesheet = oldStylesheet;
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break;
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case 'Atrule':
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if (node.block !== null) {
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walkRulesRight.call(this, node.block);
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}
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this.fn(node, item, list);
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break;
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case 'Ruleset':
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this.fn(node, item, list);
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break;
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}
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}
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function walkAll(node, item, list) {
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switch (node.type) {
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case 'StyleSheet':
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var oldStylesheet = this.stylesheet;
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this.stylesheet = node;
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node.rules.each(walkAll, this);
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this.stylesheet = oldStylesheet;
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break;
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case 'Atrule':
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if (node.expression !== null) {
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walkAll.call(this, node.expression);
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}
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if (node.block !== null) {
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walkAll.call(this, node.block);
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}
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break;
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case 'Ruleset':
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this.ruleset = node;
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if (node.selector !== null) {
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walkAll.call(this, node.selector);
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}
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walkAll.call(this, node.block);
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this.ruleset = null;
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break;
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case 'Selector':
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var oldSelector = this.selector;
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this.selector = node;
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node.selectors.each(walkAll, this);
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this.selector = oldSelector;
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break;
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case 'Block':
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node.declarations.each(walkAll, this);
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break;
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case 'Declaration':
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this.declaration = node;
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walkAll.call(this, node.property);
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walkAll.call(this, node.value);
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this.declaration = null;
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break;
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case 'Attribute':
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walkAll.call(this, node.name);
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if (node.value !== null) {
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walkAll.call(this, node.value);
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}
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break;
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case 'FunctionalPseudo':
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case 'Function':
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this['function'] = node;
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node.arguments.each(walkAll, this);
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this['function'] = null;
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break;
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case 'AtruleExpression':
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this.atruleExpression = node;
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node.sequence.each(walkAll, this);
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this.atruleExpression = null;
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break;
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case 'Value':
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case 'Argument':
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case 'SimpleSelector':
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case 'Braces':
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case 'Negation':
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node.sequence.each(walkAll, this);
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break;
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case 'Url':
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case 'Progid':
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walkAll.call(this, node.value);
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break;
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// nothig to do with
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// case 'Property':
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// case 'Combinator':
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// case 'Dimension':
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// case 'Hash':
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// case 'Identifier':
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// case 'Nth':
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// case 'Class':
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// case 'Id':
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// case 'Percentage':
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// case 'PseudoClass':
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// case 'PseudoElement':
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// case 'Space':
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// case 'Number':
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// case 'String':
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// case 'Operator':
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// case 'Raw':
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}
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this.fn(node, item, list);
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}
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function createContext(root, fn) {
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var context = {
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fn: fn,
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root: root,
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stylesheet: null,
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atruleExpression: null,
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ruleset: null,
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selector: null,
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declaration: null,
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function: null
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};
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return context;
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}
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module.exports = {
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all: function(root, fn) {
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walkAll.call(createContext(root, fn), root);
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},
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rules: function(root, fn) {
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walkRules.call(createContext(root, fn), root);
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},
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rulesRight: function(root, fn) {
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walkRulesRight.call(createContext(root, fn), root);
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}
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};
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