167 lines
44 KiB
JavaScript
167 lines
44 KiB
JavaScript
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(function() {
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var escope, expect, harmony;
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expect = require('chai').expect;
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harmony = require('../third_party/esprima');
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escope = require('..');
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describe('ES6 iteration scope', function() {
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it('let materialize iteration scope for ForInStatement#1', function() {
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var ast, iterScope, scope, scopeManager;
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ast = harmony.parse("(function () {\n let i = 20;\n for (let i in i) {\n console.log(i);\n }\n}());");
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scopeManager = escope.analyze(ast, {
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ecmaVersion: 6
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});
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expect(scopeManager.scopes).to.have.length(5);
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scope = scopeManager.scopes[0];
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expect(scope.type).to.be.equal('global');
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expect(scope.variables).to.have.length(0);
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scope = scopeManager.scopes[1];
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expect(scope.type).to.be.equal('function');
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expect(scope.variables).to.have.length(2);
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expect(scope.variables[0].name).to.be.equal('arguments');
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expect(scope.variables[1].name).to.be.equal('i');
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expect(scope.references).to.have.length(1);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[1]);
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iterScope = scope = scopeManager.scopes[2];
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expect(scope.type).to.be.equal('TDZ');
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expect(scope.variables).to.have.length(1);
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expect(scope.variables[0].name).to.be.equal('i');
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expect(scope.variables[0].defs[0].type).to.be.equal('TDZ');
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expect(scope.references).to.have.length(1);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[0]);
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iterScope = scope = scopeManager.scopes[3];
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expect(scope.type).to.be.equal('for');
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expect(scope.variables).to.have.length(1);
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expect(scope.variables[0].name).to.be.equal('i');
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expect(scope.references).to.have.length(1);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[0]);
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scope = scopeManager.scopes[4];
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expect(scope.type).to.be.equal('block');
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expect(scope.variables).to.have.length(0);
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expect(scope.references).to.have.length(2);
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expect(scope.references[0].identifier.name).to.be.equal('console');
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expect(scope.references[0].resolved).to.be.equal(null);
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expect(scope.references[1].identifier.name).to.be.equal('i');
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return expect(scope.references[1].resolved).to.be.equal(iterScope.variables[0]);
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});
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it('let materialize iteration scope for ForInStatement#2', function() {
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var ast, iterScope, scope, scopeManager;
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ast = harmony.parse("(function () {\n let i = 20;\n for (let { i, j, k } in i) {\n console.log(i);\n }\n}());");
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scopeManager = escope.analyze(ast, {
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ecmaVersion: 6
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});
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expect(scopeManager.scopes).to.have.length(5);
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scope = scopeManager.scopes[0];
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expect(scope.type).to.be.equal('global');
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expect(scope.variables).to.have.length(0);
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scope = scopeManager.scopes[1];
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expect(scope.type).to.be.equal('function');
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expect(scope.variables).to.have.length(2);
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expect(scope.variables[0].name).to.be.equal('arguments');
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expect(scope.variables[1].name).to.be.equal('i');
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expect(scope.references).to.have.length(1);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[1]);
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iterScope = scope = scopeManager.scopes[2];
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expect(scope.type).to.be.equal('TDZ');
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expect(scope.variables).to.have.length(3);
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expect(scope.variables[0].name).to.be.equal('i');
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expect(scope.variables[0].defs[0].type).to.be.equal('TDZ');
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expect(scope.variables[1].name).to.be.equal('j');
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expect(scope.variables[1].defs[0].type).to.be.equal('TDZ');
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expect(scope.variables[2].name).to.be.equal('k');
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expect(scope.variables[2].defs[0].type).to.be.equal('TDZ');
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expect(scope.references).to.have.length(1);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[0]);
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iterScope = scope = scopeManager.scopes[3];
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expect(scope.type).to.be.equal('for');
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expect(scope.variables).to.have.length(3);
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expect(scope.variables[0].name).to.be.equal('i');
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expect(scope.variables[1].name).to.be.equal('j');
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expect(scope.variables[2].name).to.be.equal('k');
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expect(scope.references).to.have.length(3);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[0]);
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expect(scope.references[1].identifier.name).to.be.equal('j');
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expect(scope.references[1].resolved).to.be.equal(scope.variables[1]);
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expect(scope.references[2].identifier.name).to.be.equal('k');
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expect(scope.references[2].resolved).to.be.equal(scope.variables[2]);
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scope = scopeManager.scopes[4];
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expect(scope.type).to.be.equal('block');
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expect(scope.variables).to.have.length(0);
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expect(scope.references).to.have.length(2);
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expect(scope.references[0].identifier.name).to.be.equal('console');
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expect(scope.references[0].resolved).to.be.equal(null);
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expect(scope.references[1].identifier.name).to.be.equal('i');
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return expect(scope.references[1].resolved).to.be.equal(iterScope.variables[0]);
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});
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return it('let materialize iteration scope for ForStatement#2', function() {
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var ast, functionScope, iterScope, scope, scopeManager;
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ast = harmony.parse("(function () {\n let i = 20;\n let obj = {};\n for (let { i, j, k } = obj; i < okok; ++i) {\n console.log(i, j, k);\n }\n}());");
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scopeManager = escope.analyze(ast, {
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ecmaVersion: 6
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});
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expect(scopeManager.scopes).to.have.length(4);
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scope = scopeManager.scopes[0];
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expect(scope.type).to.be.equal('global');
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expect(scope.variables).to.have.length(0);
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functionScope = scope = scopeManager.scopes[1];
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expect(scope.type).to.be.equal('function');
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expect(scope.variables).to.have.length(3);
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expect(scope.variables[0].name).to.be.equal('arguments');
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expect(scope.variables[1].name).to.be.equal('i');
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expect(scope.variables[2].name).to.be.equal('obj');
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expect(scope.references).to.have.length(2);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[1]);
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expect(scope.references[1].identifier.name).to.be.equal('obj');
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expect(scope.references[1].resolved).to.be.equal(scope.variables[2]);
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iterScope = scope = scopeManager.scopes[2];
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expect(scope.type).to.be.equal('for');
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expect(scope.variables).to.have.length(3);
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expect(scope.variables[0].name).to.be.equal('i');
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expect(scope.variables[0].defs[0].type).to.be.equal('Variable');
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expect(scope.variables[1].name).to.be.equal('j');
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expect(scope.variables[1].defs[0].type).to.be.equal('Variable');
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expect(scope.variables[2].name).to.be.equal('k');
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expect(scope.variables[2].defs[0].type).to.be.equal('Variable');
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expect(scope.references).to.have.length(7);
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expect(scope.references[0].identifier.name).to.be.equal('i');
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expect(scope.references[0].resolved).to.be.equal(scope.variables[0]);
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expect(scope.references[1].identifier.name).to.be.equal('j');
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expect(scope.references[1].resolved).to.be.equal(scope.variables[1]);
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expect(scope.references[2].identifier.name).to.be.equal('k');
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expect(scope.references[2].resolved).to.be.equal(scope.variables[2]);
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expect(scope.references[3].identifier.name).to.be.equal('obj');
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expect(scope.references[3].resolved).to.be.equal(functionScope.variables[2]);
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expect(scope.references[4].identifier.name).to.be.equal('i');
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expect(scope.references[4].resolved).to.be.equal(scope.variables[0]);
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expect(scope.references[5].identifier.name).to.be.equal('okok');
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expect(scope.references[5].resolved).to.be["null"];
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expect(scope.references[6].identifier.name).to.be.equal('i');
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expect(scope.references[6].resolved).to.be.equal(scope.variables[0]);
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scope = scopeManager.scopes[3];
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expect(scope.type).to.be.equal('block');
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expect(scope.variables).to.have.length(0);
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expect(scope.references).to.have.length(4);
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expect(scope.references[0].identifier.name).to.be.equal('console');
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expect(scope.references[0].resolved).to.be["null"];
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expect(scope.references[1].identifier.name).to.be.equal('i');
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expect(scope.references[1].resolved).to.be.equal(iterScope.variables[0]);
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expect(scope.references[2].identifier.name).to.be.equal('j');
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expect(scope.references[2].resolved).to.be.equal(iterScope.variables[1]);
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expect(scope.references[3].identifier.name).to.be.equal('k');
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return expect(scope.references[3].resolved).to.be.equal(iterScope.variables[2]);
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});
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});
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}).call(this);
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