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fix cascade on anonymous function reference

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Unlike normal variables and even function definitions, these cannot be reassigned, even though assignment expressions would "leak" the assigned value as normal.
This commit is contained in:
alexlamsl 2017-03-27 01:23:51 +08:00
parent 861a79ac9f
commit 675748274b
2 changed files with 113 additions and 1 deletions
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4
lib/compress.js
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@ -2915,7 +2915,9 @@ merge(Compressor.prototype, {
&& (self.car.operator == "++" || self.car.operator == "--")) {
left = self.car.expression;
}
if (left) {
if (left
&& !(left instanceof AST_SymbolRef
&& left.definition().orig[0] instanceof AST_SymbolLambda)) {
var parent, field;
var cdr = self.cdr;
while (true) {

110
test/compress/sequences.js
View File

@ -330,3 +330,113 @@ issue_1685: {
}
expect_stdout: true
}
func_def_1: {
options = {
cascade: true,
side_effects: true,
}
input: {
function f() {
return f = 0, !!f;
}
console.log(f());
}
expect: {
function f() {
return !!(f = 0);
}
console.log(f());
}
expect_stdout: "false"
}
func_def_2: {
options = {
cascade: true,
side_effects: true,
}
input: {
console.log(function f() {
return f = 0, !!f;
}());
}
expect: {
console.log(function f() {
return f = 0, !!f;
}());
}
expect_stdout: "true"
}
func_def_3: {
options = {
cascade: true,
side_effects: true,
}
input: {
function f() {
function g() {}
return g = 0, !!g;
}
console.log(f());
}
expect: {
function f() {
function g() {}
return !!(g = 0);
}
console.log(f());
}
expect_stdout: "false"
}
func_def_4: {
options = {
cascade: true,
side_effects: true,
}
input: {
function f() {
function g() {
return g = 0, !!g;
}
return g();
}
console.log(f());
}
expect: {
function f() {
function g() {
return !!(g = 0);
}
return g();
}
console.log(f());
}
expect_stdout: "false"
}
func_def_5: {
options = {
cascade: true,
side_effects: true,
}
input: {
function f() {
return function g(){
return g = 0, !!g;
}();
}
console.log(f());
}
expect: {
function f() {
return function g(){
return g = 0, !!g;
}();
}
console.log(f());
}
expect_stdout: "true"
}