96 lines
2.3 KiB
JavaScript
96 lines
2.3 KiB
JavaScript
|
/*
|
||
|
|
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;
|