| /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */ |
| /* This Source Code Form is subject to the terms of the Mozilla Public |
| * License, v. 2.0. If a copy of the MPL was not distributed with this |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 634472; |
| var summary = 'contextual restrictions for yield and arguments'; |
| var actual = ''; |
| var expect = ''; |
| |
| |
| function error(str) { |
| let base; |
| try { |
| // the following line must not be broken up into multiple lines |
| base = (function(){try{eval('throw new Error()')}catch(e){return e.lineNumber}})(); eval(str); |
| return null; |
| } catch (e) { |
| e.lineNumber = e.lineNumber - base + 1; |
| return e; |
| } |
| } |
| |
| const JSMSG_GENEXP_YIELD = error("(function(){((yield) for (x in []))})").message; |
| const JSMSG_TOP_YIELD = error("yield").message; |
| const JSMSG_YIELD_PAREN = error("(function(){yield, 1})").message; |
| const JSMSG_YIELD_FOR = error("(function(){yield for})").message; |
| const JSMSG_BAD_GENERATOR_SYNTAX = error("(1, x for (x in []))").message; |
| |
| const cases = [ |
| // yield expressions |
| { expr: "yield", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "simple yield" }, |
| { expr: "yield 1", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg" }, |
| { expr: "1, yield", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "simple yield at end of list" }, |
| { expr: "1, yield 2", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg at end of list" }, |
| { expr: "yield, 1", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "simple yield in list" }, |
| { expr: "yield 1, 2", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "yield w/ arg in list" }, |
| { expr: "(yield)", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "simple yield, parenthesized" }, |
| { expr: "(yield 1)", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg, parenthesized" }, |
| { expr: "(1, yield)", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "simple yield at end of list, parenthesized" }, |
| { expr: "(1, yield 2)", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg at end of list, parenthesized" }, |
| { expr: "(yield, 1)", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "simple yield in list, parenthesized" }, |
| { expr: "(yield 1, 2)", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "yield w/ arg in list, parenthesized" }, |
| |
| // deeply nested yield expressions |
| { expr: "((((yield))))", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "deeply nested yield" }, |
| { expr: "((((yield 1))))", top: JSMSG_TOP_YIELD, fun: null, gen: JSMSG_GENEXP_YIELD, desc: "deeply nested yield w/ arg" }, |
| |
| // arguments |
| { expr: "arguments", top: null, fun: null, gen: null, desc: "arguments in list" }, |
| { expr: "1, arguments", top: null, fun: null, gen: null, desc: "arguments in list" }, |
| |
| // yield in generator expressions |
| { expr: "(yield for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_FOR, gen: JSMSG_YIELD_FOR, desc: "simple yield in genexp" }, |
| { expr: "(yield 1 for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg in genexp" }, |
| { expr: "(yield, 1 for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "simple yield in list in genexp" }, |
| { expr: "(yield 1, 2 for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "yield w/ arg in list in genexp" }, |
| { expr: "(1, yield for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_FOR, gen: JSMSG_YIELD_FOR, desc: "simple yield at end of list in genexp" }, |
| { expr: "(1, yield 2 for (x in []))", top: JSMSG_TOP_YIELD, fun: { simple: JSMSG_GENEXP_YIELD, call: JSMSG_GENEXP_YIELD }, |
| gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg at end of list in genexp" }, |
| { expr: "((yield) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "simple yield, parenthesized in genexp" }, |
| { expr: "((yield 1) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg, parenthesized in genexp" }, |
| { expr: "(1, (yield) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "simple yield, parenthesized in list in genexp" }, |
| { expr: "(1, (yield 2) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg, parenthesized in list in genexp" }, |
| { expr: "((1, yield) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "simple yield at end of list, parenthesized in genexp" }, |
| { expr: "((1, yield 2) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg at end of list, parenthesized in genexp" }, |
| { expr: "(1, (2, yield) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "simple yield at end of list, parenthesized in list in genexp" }, |
| { expr: "(1, (2, yield 3) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "yield w/ arg at end of list, parenthesized in list in genexp" }, |
| { expr: "((yield, 1) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "simple yield in list, parenthesized in genexp" }, |
| { expr: "((yield 1, 2) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "yield w/ arg in list, parenthesized in genexp" }, |
| { expr: "(1, (yield, 2) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "simple yield in list, parenthesized in list in genexp" }, |
| { expr: "(1, (yield 2, 3) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_YIELD_PAREN, gen: JSMSG_YIELD_PAREN, desc: "yield w/ arg in list, parenthesized in list in genexp" }, |
| |
| // deeply nested yield in generator expressions |
| { expr: "((((1, yield 2))) for (x in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "deeply nested yield in genexp" }, |
| { expr: "((((1, yield 2)) for (x in [])) for (y in []))", top: JSMSG_TOP_YIELD, fun: JSMSG_GENEXP_YIELD, gen: JSMSG_GENEXP_YIELD, desc: "deeply nested yield in multiple genexps" }, |
| |
| // arguments in generator expressions |
| { expr: "(arguments for (x in []))", top: null, fun: null, gen: null, desc: "simple arguments in genexp" }, |
| { expr: "(1, arguments for (x in []))", top: JSMSG_BAD_GENERATOR_SYNTAX, fun: JSMSG_BAD_GENERATOR_SYNTAX, gen: JSMSG_BAD_GENERATOR_SYNTAX, desc: "arguments in list in genexp" }, |
| { expr: "((arguments) for (x in []))", top: null, fun: null, gen: null, desc: "arguments, parenthesized in genexp" }, |
| { expr: "(1, (arguments) for (x in []))", top: JSMSG_BAD_GENERATOR_SYNTAX, fun: JSMSG_BAD_GENERATOR_SYNTAX, gen: JSMSG_BAD_GENERATOR_SYNTAX, desc: "arguments, parenthesized in list in genexp" }, |
| { expr: "((1, arguments) for (x in []))", top: null, fun: null, gen: null, desc: "arguments in list, parenthesized in genexp" }, |
| { expr: "(1, (2, arguments) for (x in []))", top: JSMSG_BAD_GENERATOR_SYNTAX, fun: JSMSG_BAD_GENERATOR_SYNTAX, gen: JSMSG_BAD_GENERATOR_SYNTAX, desc: "arguments in list, parenthesized in list in genexp" }, |
| |
| // deeply nested arguments in generator expressions |
| { expr: "((((1, arguments))) for (x in []))", top: null, fun: null, gen: null, desc: "deeply nested arguments in genexp" }, |
| { expr: "((((1, arguments)) for (x in [])) for (y in []))", top: null, fun: null, gen: null, desc: "deeply nested arguments in multiple genexps" }, |
| |
| // legal yield/arguments in nested function |
| { expr: "((function() { yield }) for (x in []))", top: null, fun: null, gen: null, desc: "legal yield in nested function" }, |
| { expr: "((function() { arguments }) for (x in []))", top: null, fun: null, gen: null, desc: "legal arguments in nested function" }, |
| { expr: "((function() arguments) for (x in []))", top: null, fun: null, gen: null, desc: "legal arguments in nested expression-closure" } |
| ]; |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| function splitKeyword(str) { |
| return str. |
| replace(/yield for/, '\nyield for\n'). |
| replace(/yield ([0-9])/, '\nyield $1\n'). |
| replace(/yield([^ ]|$)/, '\nyield\n$1'). |
| replace(/arguments/, '\narguments\n'); |
| } |
| |
| function expectError1(err, ctx, msg) { |
| reportCompare('object', typeof err, 'exn for: ' + msg); |
| reportCompare(ctx, err.message, 'exn message for: ' + msg); |
| if (ctx !== JSMSG_BAD_GENERATOR_SYNTAX) |
| reportCompare(2, err.lineNumber, 'exn token for: ' + msg); |
| } |
| |
| function expectError(expr, call, wrapCtx, expect, msg) { |
| let exps = (typeof expect === "string") |
| ? { simple: expect, call: expect } |
| : expect; |
| expectError1(error(wrapCtx(expr)), exps.simple, msg); |
| if (call) |
| expectError1(error(wrapCtx(call)), exps.call, 'call argument in ' + msg); |
| } |
| |
| function expectSuccess(err, msg) { |
| reportCompare(null, err, 'parse: ' + msg); |
| } |
| |
| function atTop(str) { return str } |
| function inFun(str) { return '(function(){' + str + '})' } |
| function inGen(str) { return '(y for (y in ' + str + '))' } |
| |
| function test() |
| { |
| enterFunc ('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus (summary); |
| |
| for (let i = 0, len = cases.length; i < len; i++) { |
| let {expr, top, fun, gen, desc} = cases[i]; |
| |
| let call = (expr[0] === "(") ? ("print" + expr) : null; |
| |
| expr = splitKeyword(expr); |
| if (call) |
| call = splitKeyword(call); |
| |
| if (top) |
| expectError(expr, call, atTop, top, 'top-level context, ' + desc); |
| else |
| expectSuccess(error(expr), 'top-level context, ' + desc); |
| |
| if (fun) |
| expectError(expr, call, inFun, fun, 'function context, ' + desc); |
| else |
| expectSuccess(error(inFun(expr)), 'function context, ' + desc); |
| |
| if (gen) |
| expectError(expr, call, inGen, gen, 'genexp context, ' + desc); |
| else |
| expectSuccess(error(inGen(expr)), 'genexp context, ' + desc); |
| } |
| |
| exitFunc ('test'); |
| } |
