| /* |
| MIT License http://www.opensource.org/licenses/mit-license.php |
| Author Tobias Koppers @sokra |
| */ |
| "use strict"; |
| |
| var Source = require("./Source"); |
| var SourceNode = require("source-map").SourceNode; |
| |
| var REPLACE_REGEX = /\n(?=.|\s)/g; |
| |
| function cloneAndPrefix(node, prefix, append) { |
| if(typeof node === "string") { |
| var result = node.replace(REPLACE_REGEX, "\n" + prefix); |
| if(append.length > 0) result = append.pop() + result; |
| if(/\n$/.test(node)) append.push(prefix); |
| return result; |
| } else { |
| var newNode = new SourceNode( |
| node.line, |
| node.column, |
| node.source, |
| node.children.map(function(node) { |
| return cloneAndPrefix(node, prefix, append); |
| }), |
| node.name |
| ); |
| newNode.sourceContents = node.sourceContents; |
| return newNode; |
| } |
| }; |
| |
| class PrefixSource extends Source { |
| constructor(prefix, source) { |
| super(); |
| this._source = source; |
| this._prefix = prefix; |
| } |
| |
| source() { |
| var node = typeof this._source === "string" ? this._source : this._source.source(); |
| var prefix = this._prefix; |
| return prefix + node.replace(REPLACE_REGEX, "\n" + prefix); |
| } |
| |
| node(options) { |
| var node = this._source.node(options); |
| var prefix = this._prefix; |
| var output = []; |
| var result = new SourceNode(); |
| node.walkSourceContents(function(source, content) { |
| result.setSourceContent(source, content); |
| }); |
| var needPrefix = true; |
| node.walk(function(chunk, mapping) { |
| var parts = chunk.split(/(\n)/); |
| for(var i = 0; i < parts.length; i += 2) { |
| var nl = i + 1 < parts.length; |
| var part = parts[i] + (nl ? "\n" : ""); |
| if(part) { |
| if(needPrefix) { |
| output.push(prefix); |
| } |
| output.push(new SourceNode(mapping.line, mapping.column, mapping.source, part, mapping.name)); |
| needPrefix = nl; |
| } |
| } |
| }); |
| result.add(output); |
| return result; |
| } |
| |
| listMap(options) { |
| var prefix = this._prefix; |
| var map = this._source.listMap(options); |
| return map.mapGeneratedCode(function(code) { |
| return prefix + code.replace(REPLACE_REGEX, "\n" + prefix); |
| }); |
| } |
| |
| updateHash(hash) { |
| if(typeof this._source === "string") |
| hash.update(this._source); |
| else |
| this._source.updateHash(hash); |
| if(typeof this._prefix === "string") |
| hash.update(this._prefix); |
| else |
| this._prefix.updateHash(hash); |
| } |
| } |
| |
| require("./SourceAndMapMixin")(PrefixSource.prototype); |
| |
| module.exports = PrefixSource; |