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Escape sourcemapped names that contain escapable characters

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This commit is contained in:
Ben Ng 2013-08-13 14:02:52 -07:00
parent c85d4318b9
commit d051f29cac
1 changed files with 19 additions and 0 deletions
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19
lib/output.js
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@ -282,6 +282,14 @@ function OutputStream(options) {
var remainder = 0;
var offset = 0;
var tokenName;
var tokenChars;
var escapable = [
{find:'\n', replace:'\\n'},
{find:'\r', replace:'\\r'},
{find:'\t', replace:'\\t'},
{find:'\u2028', replace:'\\u2028'},
{find:'\u2029', replace:'\\u2029'}
];
tokenName = (!name && token.type == "name") ? token.value : name;
@ -289,6 +297,17 @@ function OutputStream(options) {
// Cast to a string, it might be a number
tokenName = new String(tokenName);
// Fixes offsets for escaped chars in keys of object literals
tokenChars = tokenName.split('');
for(var i=0, ii=tokenChars.length; i<ii; i++) {
for(var y=0, yy=escapable.length; y<yy; y++) {
if(tokenChars[i] === escapable[y].find && (i===0 || tokenChars[i-1] != '\\')) {
tokenChars[i] = escapable[y].replace;
}
}
}
tokenName = tokenChars.join('')
// Fixes offsets for quoted keys of object literals
remainder = token.endpos - token.pos - tokenName.length;
offset = remainder === 0 ? 0 : remainder/2;