abstract out named method helper
This commit is contained in:
43
lib/6to5/transformation/helpers/name-method.js
Normal file
43
lib/6to5/transformation/helpers/name-method.js
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@@ -0,0 +1,43 @@
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var traverse = require("../../traverse");
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var util = require("../../util");
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var t = require("../../types");
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module.exports = function (node, file, scope) {
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var key = t.toComputedKey(node, node.key);
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if (!t.isLiteral(key)) return node; // we can't set a function id with this
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var id = t.toIdentifier(key.value);
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key = t.identifier(id);
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var selfReference = false;
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var outerDeclar = scope.get(id, true);
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traverse(node, {
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enter: function (node, parent, scope) {
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// check if this node is an identifier that matches the same as our function id
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if (!t.isIdentifier(node, { name: id })) return;
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// check if this node is the one referenced
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if (!t.isReferenced(node, parent)) return;
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// check that we don't have a local variable declared as that removes the need
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// for the wrapper
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var localDeclar = scope.get(id, true);
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if (localDeclar !== outerDeclar) return;
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selfReference = true;
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this.stop();
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}
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}, scope);
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if (selfReference) {
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node.value = util.template("property-method-assignment-wrapper", {
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FUNCTION: node.value,
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FUNCTION_ID: key,
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FUNCTION_KEY: file.generateUidIdentifier(id, scope),
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WRAPPER_KEY: file.generateUidIdentifier(id + "Wrapper", scope)
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});
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} else {
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node.value.id = key;
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}
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};
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@@ -1,4 +1,5 @@
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var propertyMethodAssignment = require("./es6-property-method-assignment");
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var nameMethod = require("../helpers/name-method");
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var traverse = require("../../traverse");
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var util = require("../../util");
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var t = require("../../types");
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@@ -194,7 +195,7 @@ Class.prototype.pushMethod = function (node) {
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var kind = node.kind;
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if (kind === "") {
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propertyMethodAssignment._namedMethod(node, this.file, this.scope);
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nameMethod(node, this.file, this.scope);
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if (this.isLoose) {
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// use assignments instead of define properties for loose classes
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@@ -1,53 +1,14 @@
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var traverse = require("../../traverse");
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var util = require("../../util");
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var t = require("../../types");
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exports._namedMethod = function (node, file, scope) {
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var key = t.toComputedKey(node, node.key);
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if (!t.isLiteral(key)) return node; // we can't set a function id with this
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var id = t.toIdentifier(key.value);
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key = t.identifier(id);
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var selfReference = false;
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var outerDeclar = scope.get(id, true);
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traverse(node, {
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enter: function (node, parent, scope) {
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// check if this node is an identifier that matches the same as our function id
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if (!t.isIdentifier(node, { name: id })) return;
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// check if this node is the one referenced
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if (!t.isReferenced(node, parent)) return;
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// check that we don't have a local variable declared as that removes the need
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// for the wrapper
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var localDeclar = scope.get(id, true);
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if (localDeclar !== outerDeclar) return;
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selfReference = true;
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this.stop();
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}
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}, scope);
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if (selfReference) {
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node.value = util.template("property-method-assignment-wrapper", {
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FUNCTION: node.value,
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FUNCTION_ID: key,
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FUNCTION_KEY: file.generateUidIdentifier(id, scope),
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WRAPPER_KEY: file.generateUidIdentifier(id + "Wrapper", scope)
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});
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} else {
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node.value.id = key;
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}
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};
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var nameMethod = require("../helpers/name-method");
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var traverse = require("../../traverse");
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var util = require("../../util");
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var t = require("../../types");
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exports.Property = function (node, parent, file, scope) {
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if (!node.method) return;
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node.method = false;
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exports._namedMethod(node, file, scope);
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nameMethod(node, file, scope);
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};
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exports.ObjectExpression = function (node) {
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