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implement hoist_props (#2396)

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fixes #2377
This commit is contained in:
Alex Lam S.L
2017-10-25 03:38:11 +08:00
committed by GitHub
parent 74ae16f9f8
commit 4178289c38
3 changed files with 450 additions and 9 deletions
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371
test/compress/hoist_props.js Normal file
View File

@@ -0,0 +1,371 @@
issue_2377_1: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
var obj_foo = 1, obj_cube = function(x) {
return x * x * x;
};
console.log(obj_foo, obj_cube(3));
}
expect_stdout: "1 27"
}
issue_2377_2: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
console.log(1, function(x) {
return x * x * x;
}(3));
}
expect_stdout: "1 27"
}
issue_2377_3: {
options = {
evaluate: true,
inline: true,
hoist_props: true,
passes: 3,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
foo: 1,
bar: 2,
square: function(x) {
return x * x;
},
cube: function(x) {
return x * x * x;
},
};
console.log(obj.foo, obj.cube(3));
}
expect: {
console.log(1, 27);
}
expect_stdout: "1 27"
}
direct_access_1: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var a = 0;
var obj = {
a: 1,
b: 2,
};
for (var k in obj) a++;
console.log(a, obj.a);
}
expect: {
var a = 0;
var obj = {
a: 1,
b: 2,
};
for (var k in obj) a++;
console.log(a, obj.a);
}
expect_stdout: "2 1"
}
direct_access_2: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = { a: 1 };
var f = function(k) {
if (o[k]) return "PASS";
};
console.log(f("a"));
}
expect: {
var o = { a: 1 };
console.log(function(k) {
if (o[k]) return "PASS";
}("a"));
}
expect_stdout: "PASS"
}
direct_access_3: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = { a: 1 };
o.b;
console.log(o.a);
}
expect: {
var o = { a: 1 };
o.b;
console.log(o.a);
}
expect_stdout: "1"
}
single_use: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var obj = {
bar: function() {
return 42;
},
};
console.log(obj.bar());
}
expect: {
console.log({
bar: function() {
return 42;
},
}.bar());
}
}
name_collision_1: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var obj_foo = 1;
var obj_bar = 2;
function f() {
var obj = {
foo: 3,
bar: 4,
"b-r": 5,
"b+r": 6,
"b!r": 7,
};
console.log(obj_foo, obj.foo, obj.bar, obj["b-r"], obj["b+r"], obj["b!r"]);
}
f();
}
expect: {
var obj_foo = 1;
var obj_bar = 2;
function f() {
var obj_foo$0 = 3,
obj_bar = 4,
obj_b_r = 5,
obj_b_r$0 = 6,
obj_b_r$1 = 7;
console.log(obj_foo, obj_foo$0, obj_bar, obj_b_r, obj_b_r$0, obj_b_r$1);
}
f();
}
expect_stdout: "1 3 4 5 6 7"
}
name_collision_2: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var o = {
p: 1,
0: function(x) {
return x;
},
1: function(x) {
return x + 1;
}
}, o__$0 = 2, o__$1 = 3;
console.log(o.p === o.p, o[0](4), o[1](5), o__$0, o__$1);
}
expect: {
var o_p = 1,
o__ = function(x) {
return x;
},
o__$2 = function(x) {
return x + 1;
},
o__$0 = 2,
o__$1 = 3;
console.log(o_p === o_p, o__(4), o__$2(5), o__$0, o__$1);
}
expect_stdout: "true 4 6 2 3"
}
name_collision_3: {
options = {
hoist_props: true,
reduce_vars: true,
toplevel: true,
}
input: {
var o = {
p: 1,
0: function(x) {
return x;
},
1: function(x) {
return x + 1;
}
}, o__$0 = 2, o__$1 = 3;
console.log(o.p === o.p, o[0](4), o[1](5));
}
expect: {
var o_p = 1,
o__ = function(x) {
return x;
},
o__$2 = function(x) {
return x + 1;
},
o__$0 = 2,
o__$1 = 3;
console.log(o_p === o_p, o__(4), o__$2(5));
}
expect_stdout: "true 4 6"
}
contains_this_1: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p);
}
expect: {
console.log(1, 1);
}
expect_stdout: "1 1"
}
contains_this_2: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u);
}
expect: {
console.log(1, 1, function() {
return this === this;
});
}
expect_stdout: true
}
contains_this_3: {
options = {
evaluate: true,
hoist_props: true,
inline: true,
passes: 2,
reduce_vars: true,
toplevel: true,
unused: true,
}
input: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u());
}
expect: {
var o = {
u: function() {
return this === this;
},
p: 1
};
console.log(o.p, o.p, o.u());
}
expect_stdout: "1 1 true"
}

6
test/ufuzz.json
View File

@@ -16,11 +16,9 @@
{},
{
"compress": {
"toplevel": true
"hoist_props": true
},
"mangle": {
"toplevel": true
}
"toplevel": true
},
{
"compress": {