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enhance arguments (#3193)

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fixes #3192
This commit is contained in:
Alex Lam S.L
2018-06-21 14:10:37 +08:00
committed by alexlamsl
parent 915c7e234d
commit 766a4147d4
4 changed files with 207 additions and 44 deletions
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134
test/compress/arguments.js
View File

@@ -5,7 +5,8 @@ replace_index: {
properties: true,
}
input: {
console.log(arguments && arguments[0]);
var arguments = [];
console.log(arguments[0]);
(function() {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
@@ -21,7 +22,8 @@ replace_index: {
})("bar", 42);
}
expect: {
console.log(arguments && arguments[0]);
var arguments = [];
console.log(arguments[0]);
(function() {
console.log(arguments[1], arguments[1], arguments.foo);
})("bar", 42);
@@ -45,6 +47,37 @@ replace_index: {
]
}
replace_index_strict: {
options = {
arguments: true,
evaluate: true,
properties: true,
reduce_vars: true,
}
input: {
"use strict";
(function() {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
(function(a, b) {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
}
expect: {
"use strict";
(function() {
console.log(arguments[1], arguments[1], arguments.foo);
})("bar", 42);
(function(a, b) {
console.log(b, b, arguments.foo);
})("bar", 42);
}
expect_stdout: [
"42 42 undefined",
"42 42 undefined",
]
}
replace_index_keep_fargs: {
options = {
arguments: true,
@@ -53,7 +86,8 @@ replace_index_keep_fargs: {
properties: true,
}
input: {
console.log(arguments && arguments[0]);
var arguments = [];
console.log(arguments[0]);
(function() {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
@@ -69,7 +103,8 @@ replace_index_keep_fargs: {
})("bar", 42);
}
expect: {
console.log(arguments && arguments[0]);
var arguments = [];
console.log(arguments[0]);
(function(argument_0, argument_1) {
console.log(argument_1, argument_1, arguments.foo);
})("bar", 42);
@@ -93,6 +128,38 @@ replace_index_keep_fargs: {
]
}
replace_index_keep_fargs_strict: {
options = {
arguments: true,
evaluate: true,
keep_fargs: false,
properties: true,
reduce_vars: true,
}
input: {
"use strict";
(function() {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
(function(a, b) {
console.log(arguments[1], arguments["1"], arguments["foo"]);
})("bar", 42);
}
expect: {
"use strict";
(function(argument_0, argument_1) {
console.log(argument_1, argument_1, arguments.foo);
})("bar", 42);
(function(a, b) {
console.log(b, b, arguments.foo);
})("bar", 42);
}
expect_stdout: [
"42 42 undefined",
"42 42 undefined",
]
}
modified: {
options = {
arguments: true,
@@ -101,8 +168,10 @@ modified: {
(function(a, b) {
var c = arguments[0];
var d = arguments[1];
a = "foo";
var a = "foo";
b++;
arguments[0] = "moo";
arguments[1] *= 2;
console.log(a, b, c, d, arguments[0], arguments[1]);
})("bar", 42);
}
@@ -110,10 +179,61 @@ modified: {
(function(a, b) {
var c = a;
var d = b;
a = "foo";
var a = "foo";
b++;
a = "moo";
b *= 2;
console.log(a, b, c, d, a, b);
})("bar", 42);
}
expect_stdout: "foo 43 bar 42 foo 43"
expect_stdout: "moo 86 bar 42 moo 86"
}
modified_strict: {
options = {
arguments: true,
reduce_vars: true,
}
input: {
"use strict";
(function(a, b) {
var c = arguments[0];
var d = arguments[1];
var a = "foo";
b++;
arguments[0] = "moo";
arguments[1] *= 2;
console.log(a, b, c, d, arguments[0], arguments[1]);
})("bar", 42);
}
expect: {
"use strict";
(function(a, b) {
var c = arguments[0];
var d = arguments[1];
var a = "foo";
b++;
arguments[0] = "moo";
arguments[1] *= 2;
console.log(a, b, c, d, arguments[0], arguments[1]);
})("bar", 42);
}
expect_stdout: "foo 43 bar 42 moo 84"
}
duplicate_argname: {
options = {
arguments: true,
}
input: {
(function(a, b, a) {
console.log(a, b, arguments[0], arguments[1], arguments[2]);
})("foo", 42, "bar");
}
expect: {
(function(a, b, a) {
console.log(a, b, arguments[0], b, a);
})("foo", 42, "bar");
}
expect_stdout: "bar 42 foo 42 bar"
}

28
test/compress/drop-unused.js
View File

@@ -1926,3 +1926,31 @@ issue_3146_4: {
}
expect_stdout: "PASS"
}
issue_3192: {
options = {
unused: true,
}
input: {
(function(a) {
console.log(a = "foo", arguments[0]);
})("bar");
(function(a) {
"use strict";
console.log(a = "foo", arguments[0]);
})("bar");
}
expect: {
(function(a) {
console.log(a = "foo", arguments[0]);
})("bar");
(function(a) {
"use strict";
console.log("foo", arguments[0]);
})("bar");
}
expect_stdout: [
"foo foo",
"foo bar",
]
}