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apply collapse_vars to loop conditions (#2712)

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This commit is contained in:
Alex Lam S.L
2018-01-04 03:18:28 +08:00
committed by GitHub
parent cfe3a98ce5
commit c598a12af9
2 changed files with 6 additions and 1 deletions
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5
lib/compress.js
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@@ -1171,10 +1171,14 @@ merge(Compressor.prototype, {
extract_candidates(expr.alternative);
} else if (expr instanceof AST_Definitions) {
expr.definitions.forEach(extract_candidates);
} else if (expr instanceof AST_DWLoop) {
extract_candidates(expr.condition);
} else if (expr instanceof AST_Exit) {
if (expr.value) extract_candidates(expr.value);
} else if (expr instanceof AST_For) {
if (expr.init) extract_candidates(expr.init);
if (expr.condition) extract_candidates(expr.condition);
if (expr.step) extract_candidates(expr.step);
} else if (expr instanceof AST_If) {
extract_candidates(expr.condition);
} else if (expr instanceof AST_Sequence) {
@@ -1205,6 +1209,7 @@ merge(Compressor.prototype, {
if (parent instanceof AST_Conditional) return node;
if (parent instanceof AST_Exit) return node;
if (parent instanceof AST_If) return node;
if (parent instanceof AST_IterationStatement) return node;
if (parent instanceof AST_Sequence) return find_stop(parent, level + 1);
if (parent instanceof AST_Switch) return node;
if (parent instanceof AST_VarDef) return node;