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254 lines
4.8 KiB
254 lines
4.8 KiB
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/**
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* Module dependencies.
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*/
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var Base = require('./compiler');
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var inherits = require('inherits');
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/**
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* Expose compiler.
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*/
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module.exports = Compiler;
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/**
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* Initialize a new `Compiler`.
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*/
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function Compiler(options) {
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options = options || {};
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Base.call(this, options);
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this.indentation = options.indent;
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}
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/**
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* Inherit from `Base.prototype`.
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*/
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inherits(Compiler, Base);
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/**
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* Compile `node`.
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*/
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Compiler.prototype.compile = function(node){
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return this.stylesheet(node);
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};
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/**
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* Visit stylesheet node.
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*/
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Compiler.prototype.stylesheet = function(node){
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return this.mapVisit(node.stylesheet.rules, '\n\n');
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};
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/**
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* Visit comment node.
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*/
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Compiler.prototype.comment = function(node){
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return this.emit(this.indent() + '/*' + node.comment + '*/', node.position);
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};
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/**
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* Visit import node.
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*/
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Compiler.prototype.import = function(node){
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return this.emit('@import ' + node.import + ';', node.position);
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};
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/**
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* Visit media node.
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*/
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Compiler.prototype.media = function(node){
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return this.emit('@media ' + node.media, node.position)
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+ this.emit(
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' {\n'
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+ this.indent(1))
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+ this.mapVisit(node.rules, '\n\n')
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+ this.emit(
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this.indent(-1)
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+ '\n}');
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};
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/**
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* Visit document node.
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*/
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Compiler.prototype.document = function(node){
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var doc = '@' + (node.vendor || '') + 'document ' + node.document;
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return this.emit(doc, node.position)
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+ this.emit(
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' '
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+ ' {\n'
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+ this.indent(1))
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+ this.mapVisit(node.rules, '\n\n')
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+ this.emit(
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this.indent(-1)
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+ '\n}');
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};
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/**
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* Visit charset node.
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*/
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Compiler.prototype.charset = function(node){
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return this.emit('@charset ' + node.charset + ';', node.position);
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};
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/**
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* Visit namespace node.
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*/
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Compiler.prototype.namespace = function(node){
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return this.emit('@namespace ' + node.namespace + ';', node.position);
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};
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/**
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* Visit supports node.
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*/
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Compiler.prototype.supports = function(node){
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return this.emit('@supports ' + node.supports, node.position)
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+ this.emit(
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' {\n'
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+ this.indent(1))
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+ this.mapVisit(node.rules, '\n\n')
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+ this.emit(
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this.indent(-1)
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+ '\n}');
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};
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/**
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* Visit keyframes node.
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*/
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Compiler.prototype.keyframes = function(node){
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return this.emit('@' + (node.vendor || '') + 'keyframes ' + node.name, node.position)
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+ this.emit(
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' {\n'
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+ this.indent(1))
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+ this.mapVisit(node.keyframes, '\n')
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+ this.emit(
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this.indent(-1)
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+ '}');
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};
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/**
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* Visit keyframe node.
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*/
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Compiler.prototype.keyframe = function(node){
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var decls = node.declarations;
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return this.emit(this.indent())
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+ this.emit(node.values.join(', '), node.position)
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+ this.emit(
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' {\n'
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+ this.indent(1))
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+ this.mapVisit(decls, '\n')
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+ this.emit(
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this.indent(-1)
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+ '\n'
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+ this.indent() + '}\n');
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};
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/**
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* Visit page node.
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*/
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Compiler.prototype.page = function(node){
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var sel = node.selectors.length
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? node.selectors.join(', ') + ' '
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: '';
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return this.emit('@page ' + sel, node.position)
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+ this.emit('{\n')
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+ this.emit(this.indent(1))
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+ this.mapVisit(node.declarations, '\n')
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+ this.emit(this.indent(-1))
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+ this.emit('\n}');
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};
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/**
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* Visit font-face node.
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*/
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Compiler.prototype['font-face'] = function(node){
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return this.emit('@font-face ', node.position)
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+ this.emit('{\n')
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+ this.emit(this.indent(1))
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+ this.mapVisit(node.declarations, '\n')
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+ this.emit(this.indent(-1))
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+ this.emit('\n}');
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};
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/**
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* Visit host node.
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*/
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Compiler.prototype.host = function(node){
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return this.emit('@host', node.position)
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+ this.emit(
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' {\n'
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+ this.indent(1))
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+ this.mapVisit(node.rules, '\n\n')
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+ this.emit(
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this.indent(-1)
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+ '\n}');
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};
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/**
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* Visit custom-media node.
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*/
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Compiler.prototype['custom-media'] = function(node){
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return this.emit('@custom-media ' + node.name + ' ' + node.media + ';', node.position);
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};
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/**
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* Visit rule node.
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*/
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Compiler.prototype.rule = function(node){
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var indent = this.indent();
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var decls = node.declarations;
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if (!decls.length) return '';
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return this.emit(node.selectors.map(function(s){ return indent + s }).join(',\n'), node.position)
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+ this.emit(' {\n')
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+ this.emit(this.indent(1))
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+ this.mapVisit(decls, '\n')
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+ this.emit(this.indent(-1))
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+ this.emit('\n' + this.indent() + '}');
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};
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/**
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* Visit declaration node.
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*/
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Compiler.prototype.declaration = function(node){
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return this.emit(this.indent())
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+ this.emit(node.property + ': ' + node.value, node.position)
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+ this.emit(';');
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};
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/**
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* Increase, decrease or return current indentation.
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*/
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Compiler.prototype.indent = function(level) {
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this.level = this.level || 1;
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if (null != level) {
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this.level += level;
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return '';
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}
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return Array(this.level).join(this.indentation || ' ');
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};
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