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Prevent custom indents from getting into an infinite loop.

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This commit is contained in:
Neil Fraser
2016-10-31 11:32:01 -07:00
parent 72ff6d9ead
commit ddf3b72a7f
1 changed files with 5 additions and 1 deletions
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6
core/generator.js
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@@ -360,11 +360,15 @@ Blockly.Generator.prototype.provideFunction_ = function(desiredName, code) {
var codeText = code.join('\n').replace(
this.FUNCTION_NAME_PLACEHOLDER_REGEXP_, functionName);
// Change all ' ' indents into the desired indent.
// To avoid an infinite loop of replacements, change all indents to '\0'
// character first, then replace them all with the indent.
// We are assuming that no provided functions contain a literal null char.
var oldCodeText;
while (oldCodeText != codeText) {
oldCodeText = codeText;
codeText = codeText.replace(/^(( )*) /gm, '$1' + this.INDENT);
codeText = codeText.replace(/^(( )*) /gm, '$1\0');
}
codeText = codeText.replace(/\0/g, this.INDENT);
this.definitions_[desiredName] = codeText;
}
return this.functionNames_[desiredName];