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enhance booleans (#3661)

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Alex Lam S.L
2019-12-31 13:10:05 +08:00
committed by GitHub
parent a2e4c2fd97
commit 99ac73a635
4 changed files with 23 additions and 16 deletions
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5
lib/ast.js
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@@ -964,12 +964,13 @@ TreeWalker.prototype = {
in_boolean_context: function() {
var self = this.self();
for (var i = 0, p; p = this.parent(i); i++) {
if (p instanceof AST_SimpleStatement
|| p instanceof AST_Conditional && p.condition === self
if (p instanceof AST_Conditional && p.condition === self
|| p instanceof AST_DWLoop && p.condition === self
|| p instanceof AST_For && p.condition === self
|| p instanceof AST_If && p.condition === self
|| p instanceof AST_Return && p.in_bool
|| p instanceof AST_Sequence && p.tail_node() !== self
|| p instanceof AST_SimpleStatement
|| p instanceof AST_UnaryPrefix && p.operator == "!" && p.expression === self) {
return true;
}