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handle LHS side-effects on cascade & collapse_vars (#2314)

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fixes #2313
This commit is contained in:
Alex Lam S.L
2017-09-16 11:45:19 +08:00
committed by GitHub
parent 182a47bfb1
commit 4f0953f7e9
4 changed files with 325 additions and 2 deletions
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214
test/compress/pure_getters.js
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@@ -385,3 +385,217 @@ set_mutable_2: {
}
expect_stdout: "PASS"
}
issue_2313_1: {
options = {
cascade: true,
conditionals: true,
pure_getters: "strict",
sequences: true,
side_effects: true,
}
input: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
if (x().y().z) {
console.log(3);
}
}
expect: {
function x() {
return console.log(1), {
y: function() {
return console.log(2), {
z: 0
};
}
};
}
x().y().z++,
x().y().z && console.log(3);
}
expect_stdout: [
"1",
"2",
"1",
"2",
]
}
issue_2313_2: {
options = {
cascade: true,
conditionals: true,
pure_getters: true,
sequences: true,
side_effects: true,
}
input: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
if (x().y().z) {
console.log(3);
}
}
expect: {
function x() {
return console.log(1), {
y: function() {
return console.log(2), {
z: 0
};
}
};
}
x().y().z++,
x().y().z && console.log(3);
}
expect_stdout: [
"1",
"2",
"1",
"2",
]
}
issue_2313_3: {
options = {
collapse_vars: true,
conditionals: true,
pure_getters: "strict",
}
input: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
if (x().y().z) {
console.log(3);
}
}
expect: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
x().y().z && console.log(3);
}
expect_stdout: [
"1",
"2",
"1",
"2",
]
}
issue_2313_4: {
options = {
collapse_vars: true,
conditionals: true,
pure_getters: true,
}
input: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
if (x().y().z) {
console.log(3);
}
}
expect: {
function x() {
console.log(1);
return {
y: function() {
console.log(2);
return {
z: 0
};
}
};
}
x().y().z++;
x().y().z && console.log(3);
}
expect_stdout: [
"1",
"2",
"1",
"2",
]
}
issue_2313_5: {
options = {
pure_getters: "strict",
side_effects: true,
}
input: {
x().y++;
x().y;
}
expect: {
x().y++;
x().y;
}
}
issue_2313_6: {
options = {
pure_getters: true,
side_effects: true,
}
input: {
x().y++;
x().y;
}
expect: {
x().y++;
x();
}
}