Files
UglifyJS/test/compress/reduce_vars.js

643 lines
13 KiB
JavaScript

reduce_vars: {
options = {
conditionals : true,
evaluate : true,
global_defs : {
C : 0
},
reduce_vars : true,
unused : true
}
input: {
var A = 1;
(function f0() {
var a = 2;
console.log(a - 5);
console.log(A - 5);
})();
(function f1() {
var a = 2;
console.log(a - 5);
eval("console.log(a);");
})();
(function f2(eval) {
var a = 2;
console.log(a - 5);
eval("console.log(a);");
})(eval);
(function f3() {
var b = typeof C !== "undefined";
var c = 4;
if (b) {
return 'yes';
} else {
return 'no';
}
})();
console.log(A + 1);
}
expect: {
var A = 1;
(function() {
console.log(-3);
console.log(-4);
})();
(function f1() {
var a = 2;
console.log(-3);
eval("console.log(a);");
})();
(function f2(eval) {
var a = 2;
console.log(-3);
eval("console.log(a);");
})(eval);
(function() {
return "yes";
})();
console.log(2);
}
}
modified: {
options = {
conditionals : true,
evaluate : true,
reduce_vars : true,
unused : true
}
input: {
function f0() {
var a = 1, b = 2;
b++;
console.log(a + 1);
console.log(b + 1);
}
function f1() {
var a = 1, b = 2;
--b;
console.log(a + 1);
console.log(b + 1);
}
function f2() {
var a = 1, b = 2, c = 3;
b = c;
console.log(a + b);
console.log(b + c);
console.log(a + c);
console.log(a + b + c);
}
function f3() {
var a = 1, b = 2, c = 3;
b *= c;
console.log(a + b);
console.log(b + c);
console.log(a + c);
console.log(a + b + c);
}
function f4() {
var a = 1, b = 2, c = 3;
if (a) {
b = c;
} else {
c = b;
}
console.log(a + b);
console.log(b + c);
console.log(a + c);
console.log(a + b + c);
}
function f5(a) {
B = a;
console.log(A ? 'yes' : 'no');
console.log(B ? 'yes' : 'no');
}
}
expect: {
function f0() {
var b = 2;
b++;
console.log(2);
console.log(b + 1);
}
function f1() {
var b = 2;
--b;
console.log(2);
console.log(b + 1);
}
function f2() {
var b = 2;
b = 3;
console.log(1 + b);
console.log(b + 3);
console.log(4);
console.log(1 + b + 3);
}
function f3() {
var b = 2;
b *= 3;
console.log(1 + b);
console.log(b + 3);
console.log(4);
console.log(1 + b + 3);
}
function f4() {
var b = 2, c = 3;
b = c;
console.log(1 + b);
console.log(b + c);
console.log(1 + c);
console.log(1 + b + c);
}
function f5(a) {
B = a;
console.log(A ? 'yes' : 'no');
console.log(B ? 'yes' : 'no');
}
}
}
unsafe_evaluate: {
options = {
evaluate : true,
reduce_vars : true,
unsafe : true,
unused : true
}
input: {
function f0(){
var a = {
b:1
};
console.log(a.b + 3);
}
function f1(){
var a = {
b:{
c:1
},
d:2
};
console.log(a.b + 3, a.d + 4, a.b.c + 5, a.d.c + 6);
}
}
expect: {
function f0(){
console.log(4);
}
function f1(){
var a = {
b:{
c:1
},
d:2
};
console.log(a.b + 3, 6, 6, 2..c + 6);
}
}
}
unsafe_evaluate_object: {
options = {
evaluate : true,
reduce_vars : true,
unsafe : true
}
input: {
function f0(){
var a = 1;
var b = {};
b[a] = 2;
console.log(a + 3);
}
function f1(){
var a = {
b:1
};
a.b = 2;
console.log(a.b + 3);
}
}
expect: {
function f0(){
var a = 1;
var b = {};
b[1] = 2;
console.log(4);
}
function f1(){
var a = {
b:1
};
a.b = 2;
console.log(a.b + 3);
}
}
}
unsafe_evaluate_array: {
options = {
evaluate : true,
reduce_vars : true,
unsafe : true
}
input: {
function f0(){
var a = 1;
var b = [];
b[a] = 2;
console.log(a + 3);
}
function f1(){
var a = [1];
a[2] = 3;
console.log(a.length);
}
function f2(){
var a = [1];
a.push(2);
console.log(a.length);
}
}
expect: {
function f0(){
var a = 1;
var b = [];
b[1] = 2;
console.log(4);
}
function f1(){
var a = [1];
a[2] = 3;
console.log(a.length);
}
function f2(){
var a = [1];
a.push(2);
console.log(a.length);
}
}
}
unsafe_evaluate_equality: {
options = {
evaluate : true,
reduce_vars : true,
unsafe : true,
unused : true
}
input: {
function f0(){
var a = {};
console.log(a === a);
}
function f1(){
var a = [];
console.log(a === a);
}
function f2(){
var a = {a:1, b:2};
var b = a;
var c = a;
console.log(b === c);
}
function f3(){
var a = [1, 2, 3];
var b = a;
var c = a;
console.log(b === c);
}
}
expect: {
function f0(){
console.log(true);
}
function f1(){
console.log(true);
}
function f2(){
console.log(true);
}
function f3(){
console.log(true);
}
}
}
passes: {
options = {
conditionals: true,
evaluate: true,
passes: 2,
reduce_vars: true,
unused: true,
}
input: {
function f() {
var a = 1, b = 2, c = 3;
if (a) {
b = c;
} else {
c = b;
}
console.log(a + b);
console.log(b + c);
console.log(a + c);
console.log(a + b + c);
}
}
expect: {
function f() {
var b = 2;
b = 3;
console.log(1 + b);
console.log(b + 3);
console.log(4);
console.log(1 + b + 3);
}
}
}
iife: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
!function(a, b, c) {
b++;
console.log(a - 1, b * 1, c + 2);
}(1, 2, 3);
}
expect: {
!function(a, b, c) {
b++;
console.log(0, 1 * b, 5);
}(1, 2, 3);
}
}
iife_new: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
var A = new function(a, b, c) {
b++;
console.log(a - 1, b * 1, c + 2);
}(1, 2, 3);
}
expect: {
var A = new function(a, b, c) {
b++;
console.log(0, 1 * b, 5);
}(1, 2, 3);
}
}
multi_def: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
function f(a) {
if (a)
var b = 1;
else
var b = 2
console.log(b + 1);
}
}
expect: {
function f(a) {
if (a)
var b = 1;
else
var b = 2
console.log(b + 1);
}
}
}
multi_def_2: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
if (code == 16)
var bitsLength = 2, bitsOffset = 3, what = len;
else if (code == 17)
var bitsLength = 3, bitsOffset = 3, what = (len = 0);
else if (code == 18)
var bitsLength = 7, bitsOffset = 11, what = (len = 0);
var repeatLength = this.getBits(bitsLength) + bitsOffset;
}
expect: {
if (16 == code)
var bitsLength = 2, bitsOffset = 3, what = len;
else if (17 == code)
var bitsLength = 3, bitsOffset = 3, what = (len = 0);
else if (18 == code)
var bitsLength = 7, bitsOffset = 11, what = (len = 0);
var repeatLength = this.getBits(bitsLength) + bitsOffset;
}
}
use_before_var: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
console.log(t);
var t = 1;
}
expect: {
console.log(t);
var t = 1;
}
}
inner_var_if: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
function f(){
return 0;
}
if (f())
var t = 1;
if (!t)
console.log(t);
}
expect: {
function f(){
return 0;
}
if (f())
var t = 1;
if (!t)
console.log(t);
}
}
inner_var_label: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
function f(){
return 1;
}
l: {
if (f()) break l;
var t = 1;
}
console.log(t);
}
expect: {
function f(){
return 1;
}
l: {
if (f()) break l;
var t = 1;
}
console.log(t);
}
}
inner_var_for: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
var a = 1;
x(a, b, d);
for (var b = 2, c = 3; x(a, b, c, d); x(a, b, c, d)) {
var d = 4, e = 5;
x(a, b, c, d, e);
}
x(a, b, c, d, e)
}
expect: {
var a = 1;
x(1, b, d);
for (var b = 2, c = 3; x(1, b, 3, d); x(1, b, 3, d)) {
var d = 4, e = 5;
x(1, b, 3, d, e);
}
x(1, b, 3, d, e);
}
}
inner_var_for_in_1: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
var a = 1, b = 2;
for (b in (function() {
return x(a, b, c);
})()) {
var c = 3, d = 4;
x(a, b, c, d);
}
x(a, b, c, d);
}
expect: {
var a = 1, b = 2;
for (b in (function() {
return x(1, b, c);
})()) {
var c = 3, d = 4;
x(1, b, c, d);
}
x(1, b, c, d);
}
}
inner_var_for_in_2: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
for (var long_name in {})
console.log(long_name);
}
expect: {
for (var long_name in {})
console.log(long_name);
}
}
issue_1533_1: {
options = {
collapse_vars: true,
reduce_vars: true,
}
input: {
var id = "";
for (id in {break: "me"})
console.log(id);
}
expect: {
var id = "";
for (id in {break: "me"})
console.log(id);
}
}
issue_1533_2: {
options = {
evaluate: true,
reduce_vars: true,
}
input: {
var id = "";
for (var id in {break: "me"})
console.log(id);
console.log(id);
}
expect: {
var id = "";
for (var id in {break: "me"})
console.log(id);
console.log(id);
}
}