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Merge pull request #2196 from robertbrignull/visit_null_children 

JavaScript parse tree visitor: check if ctx.children is non-null in visitChildren
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Terence Parr 2018-07-24 15:54:06 -07:00 committed by GitHub
parent 0d6aebbb8e 87725e65c9
commit fc01366f35
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1 changed files with 5 additions and 1 deletions
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6
runtime/JavaScript/src/antlr4/tree/Tree.js
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@ -73,7 +73,11 @@ ParseTreeVisitor.prototype.visit = function(ctx) {
};
ParseTreeVisitor.prototype.visitChildren = function(ctx) {
return this.visit(ctx.children);
if (ctx.children) {
return this.visit(ctx.children);
} else {
return null;
}
}
ParseTreeVisitor.prototype.visitTerminal = function(node) {