| /* -*- 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/. */ |
| |
| |
| // This file tests contextual restrictions for yield and arguments, and is |
| // derived from js1_8/genexps/regress-634472.js. |
| |
| function error(str) { |
| var 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 YIELD_PAREN = error("(function*(){(for (y of (yield 1, 2)) y)})").message; |
| const GENEXP_YIELD = error("(function*(){(for (x of yield 1) x)})").message; |
| const TOP_YIELD = error("yield").message; |
| const GENERIC = error("(for)").message; |
| const BAD_GENERATOR_SYNTAX = error("(for (x of []) x, 1)").message; |
| const MISSING_SEMI = error("yield 1").message; |
| const MISSING_PAREN = error("(yield 1)").message; |
| const PAREN_PAREN = error("(foo").message; |
| const FOR_OF_PAREN = error("(for (x of y, z) w)").message; |
| |
| const cases = [ |
| // Expressions involving yield without a value, not currently implemented. Many |
| // of these errors would need to be updated. (Note: line numbers below might be |
| // mere placeholders, not actually the expected correct behavior -- check before |
| // blindly uncommenting.) |
| //{ expr: "yield", top: [TOP_YIELD, 777], fun: null, gen: [GENEXP_YIELD, 2], desc: "simple yield" }, |
| //{ expr: "1, yield", top: [TOP_YIELD, 777], fun: null, gen: [GENEXP_YIELD, 2], desc: "simple yield at end of list" }, |
| //{ expr: "yield, 1", top: [TOP_YIELD, 777], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], desc: "simple yield in list" }, |
| //{ expr: "(yield)", top: [TOP_YIELD, 777], fun: null, gen: [GENEXP_YIELD, 2], desc: "simple yield, parenthesized" }, |
| //{ expr: "(1, yield)", top: [TOP_YIELD, 777], fun: null, gen: [GENEXP_YIELD, 2], desc: "simple yield at end of list, parenthesized" }, |
| //{ expr: "(yield, 1)", top: [TOP_YIELD, 777], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], desc: "simple yield in list, parenthesized" }, |
| //{ expr: "((((yield))))", top: [TOP_YIELD, 777], fun: null, gen: [GENEXP_YIELD, 2], desc: "deeply nested yield" }, |
| //{ expr: "(for (x of []) yield)", top: [TOP_YIELD, 777], fun: [GENERIC, 777], gen: [GENERIC, 777], desc: "simple yield in genexp" }, |
| //{ expr: "(for (x of []) yield, 1)", top: [TOP_YIELD, 777], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], desc: "simple yield in list in genexp" }, |
| //{ expr: "(for (x of []) 1, yield)", top: [TOP_YIELD, 777], fun: [GENERIC, 777], gen: [GENERIC, 777], desc: "simple yield at end of list in genexp" }, |
| //{ expr: "(for (x of []) (yield))", top: [TOP_YIELD, 777], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], desc: "simple yield, parenthesized in genexp" }, |
| //{ expr: "(for (x of []) 1, (yield))", top: [TOP_YIELD, 777], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], desc: "simple yield, parenthesized in list in genexp" }, |
| //{ expr: "(for (x of []) (1, yield))", top: [TOP_YIELD, 777], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], desc: "simple yield at end of list, parenthesized in genexp" }, |
| //{ expr: "(for (x of []) 1, (2, yield))", top: [TOP_YIELD, 777], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], desc: "simple yield at end of list, parenthesized in list in genexp" }, |
| //{ expr: "(for (x of []) (yield, 1))", top: [TOP_YIELD, 777], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], desc: "simple yield in list, parenthesized in genexp" }, |
| //{ expr: "(for (x of []) 1, (yield, 2))", top: [TOP_YIELD, 777], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], desc: "simple yield in list, parenthesized in list in genexp" }, |
| //{ expr: "(for (x of []) (function*() { yield }))", top: null, fun: null, gen: null, desc: "legal yield in nested function" }, |
| |
| // yield expressions |
| { expr: "yield 1", top: [MISSING_SEMI, 2], fun: [MISSING_SEMI, 2], gen: null, genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg" }, |
| { expr: "1, yield 2", top: [MISSING_SEMI, 2], fun: [MISSING_SEMI, 2], gen: null, genexp: [FOR_OF_PAREN, 1], desc: "yield w/ arg at end of list" }, |
| { expr: "yield 1, 2", top: [MISSING_SEMI, 2], fun: [MISSING_SEMI, 2], gen: [YIELD_PAREN, 3], genexp: [FOR_OF_PAREN, 3], desc: "yield w/ arg in list" }, |
| { expr: "(yield 1)", top: [MISSING_PAREN, 2], fun: [MISSING_PAREN, 2], gen: null, genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg, parenthesized" }, |
| { expr: "(1, yield 2)", top: [MISSING_PAREN, 2], fun: [MISSING_PAREN, 2], gen: null, genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg at end of list, parenthesized" }, |
| { expr: "(yield 1, 2)", top: [MISSING_PAREN, 2], fun: [MISSING_PAREN, 2], gen: [YIELD_PAREN, 3], genexp: [YIELD_PAREN, 2], desc: "yield w/ arg in list, parenthesized" }, |
| |
| // deeply nested yield expressions |
| { expr: "((((yield 1))))", top: [MISSING_PAREN, 2], fun: [MISSING_PAREN, 2], gen: null, genexp: [GENEXP_YIELD, 2], desc: "deeply nested yield w/ arg" }, |
| |
| // arguments |
| { expr: "arguments", top: null, fun: null, gen: null, genexp: null, desc: "arguments in list" }, |
| { expr: "1, arguments", top: null, fun: null, gen: null, genexp: [FOR_OF_PAREN, 1], desc: "arguments in list" }, |
| |
| // yield in generator expressions |
| { expr: "(for (x of []) yield 1)", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg in genexp" }, |
| { expr: "(for (x of []) yield 1, 2)", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg in list in genexp" }, |
| { expr: "(for (x of []) 1, yield 2)", top: [PAREN_PAREN, 1], fun: [PAREN_PAREN, 1], gen: [PAREN_PAREN, 1], genexp: [PAREN_PAREN, 1], desc: "yield w/ arg at end of list in genexp" }, |
| { expr: "(for (x of []) (yield 1))", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg, parenthesized in genexp" }, |
| { expr: "(for (x of []) 1, (yield 2))", top: [PAREN_PAREN, 1], fun: [PAREN_PAREN, 1], gen: [PAREN_PAREN, 1], genexp: [PAREN_PAREN, 1], desc: "yield w/ arg, parenthesized in list in genexp" }, |
| { expr: "(for (x of []) (1, yield 2))", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "yield w/ arg at end of list, parenthesized in genexp" }, |
| { expr: "(for (x of []) 1, (2, yield 3))", top: [PAREN_PAREN, 1], fun: [PAREN_PAREN, 1], gen: [PAREN_PAREN, 1], genexp: [PAREN_PAREN, 1], desc: "yield w/ arg at end of list, parenthesized in list in genexp" }, |
| { expr: "(for (x of []) (yield 1, 2))", top: [YIELD_PAREN, 2], fun: [YIELD_PAREN, 2], gen: [YIELD_PAREN, 2], genexp: [YIELD_PAREN, 2], desc: "yield w/ arg in list, parenthesized in genexp" }, |
| { expr: "(for (x of []) 1, (yield 2, 3))", top: [PAREN_PAREN, 1], fun: [PAREN_PAREN, 1], gen: [PAREN_PAREN, 1], genexp: [PAREN_PAREN, 1], desc: "yield w/ arg in list, parenthesized in list in genexp" }, |
| |
| // deeply nested yield in generator expressions |
| { expr: "(for (x of []) (((1, yield 2))))", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "deeply nested yield in genexp" }, |
| { expr: "(for (y of []) (for (x of []) ((1, yield 2))))", top: [GENEXP_YIELD, 2], fun: [GENEXP_YIELD, 2], gen: [GENEXP_YIELD, 2], genexp: [GENEXP_YIELD, 2], desc: "deeply nested yield in multiple genexps" }, |
| |
| // arguments in generator expressions |
| { expr: "(for (x of []) arguments)", top: null, fun: null, gen: null, genexp: null, desc: "simple arguments in genexp" }, |
| { expr: "(for (x of []) 1, arguments)", top: [BAD_GENERATOR_SYNTAX, 1], fun: [BAD_GENERATOR_SYNTAX, 1], gen: [BAD_GENERATOR_SYNTAX, 1], genexp: [BAD_GENERATOR_SYNTAX, 1], desc: "arguments in list in genexp" }, |
| { expr: "(for (x of []) (arguments))", top: null, fun: null, gen: null, genexp: null, desc: "arguments, parenthesized in genexp" }, |
| { expr: "(for (x of []) 1, (arguments))", top: [BAD_GENERATOR_SYNTAX, 1], fun: [BAD_GENERATOR_SYNTAX, 1], gen: [BAD_GENERATOR_SYNTAX, 1], genexp: [BAD_GENERATOR_SYNTAX, 1], desc: "arguments, parenthesized in list in genexp" }, |
| { expr: "(for (x of []) (1, arguments))", top: null, fun: null, gen: null, genexp: null, desc: "arguments in list, parenthesized in genexp" }, |
| { expr: "(for (x of []) 1, (2, arguments))", top: [BAD_GENERATOR_SYNTAX, 1], fun: [BAD_GENERATOR_SYNTAX, 1], gen: [BAD_GENERATOR_SYNTAX, 1], genexp: [BAD_GENERATOR_SYNTAX, 1], desc: "arguments in list, parenthesized in list in genexp" }, |
| |
| // deeply nested arguments in generator expressions |
| { expr: "(for (x of []) (((1, arguments))))", top: null, fun: null, gen: null, genexp: null, desc: "deeply nested arguments in genexp" }, |
| { expr: "(for (y of []) (for (x of []) ((1, arguments))))", top: null, fun: null, gen: null, genexp: null, desc: "deeply nested arguments in multiple genexps" }, |
| |
| // legal yield/arguments in nested function |
| { expr: "(for (x of []) (function*() { yield 1 }))", top: null, fun: null, gen: null, genexp: null, desc: "legal yield in nested function" }, |
| { expr: "(for (x of []) (function() { arguments }))", top: null, fun: null, gen: null, genexp: null, desc: "legal arguments in nested function" }, |
| { expr: "(for (x of []) (function() arguments))", top: null, fun: null, gen: null, genexp: null, desc: "legal arguments in nested expression-closure" } |
| ]; |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| function splitKeyword(str) { |
| return str. |
| // replace(/[)] yield/, ')\nyield\n'). |
| replace(/yield ([0-9])/, '\nyield $1\n'). |
| replace(/yield([^ ]|$)/, '\nyield\n$1'). |
| replace(/arguments/, '\narguments\n'); |
| } |
| |
| function expectError1(err, ctx, msg, lineNumber) { |
| reportCompare('object', typeof err, 'exn for: ' + msg); |
| reportCompare(ctx, err.message, 'exn message for: ' + msg); |
| reportCompare(lineNumber, err.lineNumber, 'exn token for: ' + msg); |
| } |
| |
| function expectError(expr, wrapCtx, [expect, lineNumber], msg) { |
| expectError1(error(wrapCtx(expr)), expect, msg, lineNumber); |
| } |
| |
| function expectSuccess(err, msg) { |
| reportCompare(null, err, 'parse: ' + msg); |
| } |
| |
| function atTop(str) { return str } |
| function inFun(str) { return '(function(){' + str + '})' } |
| function inGen(str) { return '(function*(){' + str + '})' } |
| function inGenExp(str) { return '(for (y of ' + str + ') y)' } |
| |
| function test() |
| { |
| enterFunc ('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus (summary); |
| |
| for (var i = 0, len = cases.length; i < len; i++) { |
| var expr, top, fun, gen, genexp, desc; |
| expr = cases[i].expr; |
| top = cases[i].top; |
| fun = cases[i].fun; |
| gen = cases[i].gen; |
| genexp = cases[i].genexp; |
| desc = cases[i].desc; |
| |
| expr = splitKeyword(expr); |
| |
| if (top) |
| expectError(expr, atTop, top, 'top-level context, ' + desc); |
| else |
| expectSuccess(error(expr), 'top-level context, ' + desc); |
| |
| if (fun) |
| expectError(expr, inFun, fun, 'function context, ' + desc); |
| else |
| expectSuccess(error(inFun(expr)), 'function context, ' + desc); |
| |
| if (gen) |
| expectError(expr, inGen, gen, 'generator context, ' + desc); |
| else |
| expectSuccess(error(inGen(expr)), 'generator context, ' + desc); |
| |
| if (genexp) |
| expectError(expr, inGenExp, genexp, 'genexp context, ' + desc); |
| else |
| expectSuccess(error(inGenExp(expr)), 'genexp context, ' + desc); |
| } |
| |
| exitFunc ('test'); |
| } |
