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change arguments to array to an additional faster helper method

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This commit is contained in:
Sebastian McKenzie 2014-11-23 21:43:28 +11:00
parent 3447204d97
commit 32f8f9e663
14 changed files with 91 additions and 33 deletions
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1
lib/6to5/templates/arguments-slice-assign-arg.js
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@ -1 +0,0 @@
var VARIABLE_NAME = SLICE_KEY.call(arguments, SLICE_ARG);

1
lib/6to5/templates/arguments-slice-assign.js
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@ -1 +0,0 @@
var VARIABLE_NAME = SLICE_KEY.call(arguments);

1
lib/6to5/templates/arguments-slice.js
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@ -1 +0,0 @@
SLICE_KEY.call(arguments);

7
lib/6to5/templates/arguments-to-array.js Normal file
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@ -0,0 +1,7 @@
(function (args) {
var target = new Array(args.length);
for (var i = 0; i< args.length; i++) {
target[i] = args[i];
}
return target;
})

9
lib/6to5/templates/object-spread.js Normal file
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@ -0,0 +1,9 @@
(function (target, keys) {
var target = {};
for (var i in target) {
if (keys.indexOf(i) >= 0) continue;
if (!Object.prototype.hasOwn.call(target)) continue;
target[i] = target[i];
}
return target;
})

1
lib/6to5/templates/slice.js
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@ -1 +0,0 @@
Array.prototype.slice;

19
lib/6to5/transformation/transformers/es6-rest-parameters.js
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@ -12,13 +12,18 @@ exports.Function = function (node, parent, file) {
t.ensureBlock(node);
var template = util.template(templateName, {
SLICE_KEY: file.addDeclaration("slice"),
VARIABLE_NAME: rest,
SLICE_ARG: t.literal(node.params.length)
});
var call = t.callExpression(
file.addDeclaration("arguments-to-array"),
[t.identifier("arguments")]
);
template.declarations[0].init.arguments[0]._ignoreAliasFunctions = true;
if (node.params.length) {
call = t.callExpression(t.memberExpression(call, t.identifier("slice")), [t.literal(node.params.length)]);
}
node.body.body.unshift(template);
call._ignoreAliasFunctions = true;
node.body.body.unshift(t.variableDeclaration("var", [
t.variableDeclarator(rest, call)
]));
};

26
test/fixtures/transformation/es6-classes/accessing-super-class/expected.js vendored
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@ -1,6 +1,14 @@
"use strict";
var _slice = Array.prototype.slice;
var _argumentsToArray = function (args) {
var target = new Array(args.length);
for (var i = 0; i < args.length; i++) {
target[i] = args[i];
}
return target;
};
var _classProps = function (child, staticProps, instanceProps) {
if (staticProps) Object.defineProperties(child, staticProps);
if (instanceProps) Object.defineProperties(child.prototype, instanceProps);
@ -25,11 +33,11 @@ var Test = (function (Foo) {
Foo.prototype.test.call(this);
foob(Foo);
Foo.call.apply(Foo, [this].concat(_slice.call(arguments)));
Foo.call.apply(Foo, [this, "test"].concat(_slice.call(arguments)));
Foo.call.apply(Foo, [this].concat(_argumentsToArray(arguments)));
Foo.call.apply(Foo, [this, "test"].concat(_argumentsToArray(arguments)));
Foo.prototype.test.call.apply(Foo.prototype, [this].concat(_slice.call(arguments)));
Foo.prototype.test.call.apply(Foo.prototype, [this, "test"].concat(_slice.call(arguments)));
Foo.prototype.test.call.apply(Foo.prototype, [this].concat(_argumentsToArray(arguments)));
Foo.prototype.test.call.apply(Foo.prototype, [this, "test"].concat(_argumentsToArray(arguments)));
};
_extends(Test, Foo);
@ -39,8 +47,8 @@ var Test = (function (Foo) {
writable: true,
value: function () {
Foo.foo.call(this);
Foo.foo.call.apply(Foo.foo, [this].concat(_slice.call(arguments)));
Foo.foo.call.apply(Foo.foo, [this, "test"].concat(_slice.call(arguments)));
Foo.foo.call.apply(Foo.foo, [this].concat(_argumentsToArray(arguments)));
Foo.foo.call.apply(Foo.foo, [this, "test"].concat(_argumentsToArray(arguments)));
}
}
}, {
@ -48,8 +56,8 @@ var Test = (function (Foo) {
writable: true,
value: function () {
Foo.prototype.test.call(this);
Foo.prototype.test.call.apply(Foo.prototype.test, [this].concat(_slice.call(arguments)));
Foo.prototype.test.call.apply(Foo.prototype.test, [this, "test"].concat(_slice.call(arguments)));
Foo.prototype.test.call.apply(Foo.prototype.test, [this].concat(_argumentsToArray(arguments)));
Foo.prototype.test.call.apply(Foo.prototype.test, [this, "test"].concat(_argumentsToArray(arguments)));
}
}
});

15
test/fixtures/transformation/es6-rest-parameters/arrow-functions/expected.js vendored
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@ -1,6 +1,15 @@
"use strict";
var _slice = Array.prototype.slice;
var concat = function () {
var arrs = _slice.call(arguments);
var _arguments = arguments;
var _argumentsToArray = function (args) {
var target = new Array(args.length);
for (var i = 0; i < args.length; i++) {
target[i] = args[i];
}
return target;
};
var concat = function () {
var arrs = _argumentsToArray(_arguments);
};

14
test/fixtures/transformation/es6-rest-parameters/multiple/expected.js vendored
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@ -1,10 +1,18 @@
"use strict";
var _slice = Array.prototype.slice;
var _argumentsToArray = function (args) {
var target = new Array(args.length);
for (var i = 0; i < args.length; i++) {
target[i] = args[i];
}
return target;
};
var t = function (f) {
var items = _slice.call(arguments, 1);
var items = _argumentsToArray(arguments).slice(1);
};
function t(f) {
var items = _slice.call(arguments, 1);
var items = _argumentsToArray(arguments).slice(1);
}

14
test/fixtures/transformation/es6-rest-parameters/single/expected.js vendored
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@ -1,10 +1,18 @@
"use strict";
var _slice = Array.prototype.slice;
var _argumentsToArray = function (args) {
var target = new Array(args.length);
for (var i = 0; i < args.length; i++) {
target[i] = args[i];
}
return target;
};
var t = function () {
var items = _slice.call(arguments);
var items = _argumentsToArray(arguments);
};
function t() {
var items = _slice.call(arguments);
var items = _argumentsToArray(arguments);
}

12
test/fixtures/transformation/es6-spread/arguments/expected.js vendored
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@ -1,8 +1,16 @@
"use strict";
var _slice = Array.prototype.slice;
var _argumentsToArray = function (args) {
var target = new Array(args.length);
for (var i = 0; i < args.length; i++) {
target[i] = args[i];
}
return target;
};
function foo() {
return bar.apply(null, ["test"].concat(_slice.call(arguments)));
return bar.apply(null, ["test"].concat(_argumentsToArray(arguments)));
}
function bar(one, two, three) {

2
test/fixtures/transformation/misc/custom-runtime/expected.js vendored
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@ -1,5 +1,5 @@
"use strict";
function foo() {
var test = customNamespace.slice.call(arguments);
var test = customNamespace.argumentsToArray(arguments);
}

2
test/fixtures/transformation/misc/runtime/expected.js vendored
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@ -1,5 +1,5 @@
"use strict";
function foo() {
var test = to5Runtime.slice.call(arguments);
var test = to5Runtime.argumentsToArray(arguments);
}