JDK-8006529.js revision 76:d7e83be6e7aa 
1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * JDK-8006529 : Methods should not always get callee parameter, and they
26 * should not be too eager in creation of scopes.
27 *
28 * @test
29 * @run
30 */
31
32// compile(script) -- compiles a script specified as a string with its
33// source code, returns a jdk.nashorn.internal.ir.FunctionNode object
34// representing it.
35var compile = (function() {
36    var Compiler       = Java.type("jdk.nashorn.internal.codegen.Compiler")
37    var Context        = Java.type("jdk.nashorn.internal.runtime.Context")
38    var Source         = Java.type("jdk.nashorn.internal.runtime.Source")
39    var CompilerAccess = Java.type("jdk.nashorn.internal.codegen.CompilerAccess")
40    return function(source) {
41	    var compiler = Compiler.compiler(new Source("<no name>", source), Context.getContext())
42        compiler.compile()
43        return CompilerAccess.getScriptNode(compiler)
44    }
45})();
46
47var allAssertions = (function() {
48    var allAssertionList = ['isVarArg', 'needsParentScope', 'needsCallee', 'needsScope', 'needsSelfSymbol', 'isSplit', 'hasEval', 'hasWith', 'hasDeepWithOrEval', 'varsInScope', 'isStrictMode']
49    var allAssertions = {}
50    for(var assertion in allAssertionList) {
51        allAssertions[allAssertionList[assertion]] = true
52    }
53    return allAssertions;
54})();
55
56// test(f[, assertions...]) tests whether all the specified assertions on the
57// passed function node are true.
58function test(f) {
59    var assertions = {}
60    for(var i = 1; i < arguments.length; ++i) {
61        var assertion = arguments[i]
62        if(!allAssertions[assertion]) {
63            throw "Unknown assertion " + assertion + " for " + f;
64        }
65        assertions[assertion] = true
66    }
67    for(var assertion in allAssertions) {
68        var expectedValue = !!assertions[assertion]
69        if(f[assertion] == null) {
70            throw "Can't find " + assertion + " on " + f;
71        }
72        if(f[assertion]() !== expectedValue) {
73            throw "Expected " + assertion + " === " + expectedValue + " for " + f;
74        }
75    }
76}
77
78// testFirstFn(script[, assertions...] tests whether all the specified
79// assertions are true in the first function in the given script; "script"
80// is a string with the source text of the script.
81function testFirstFn(script) {
82    arguments[0] = compile(script).functions[0]
83    test.apply(null, arguments)
84}
85
86// ---------------------------------- ACTUAL TESTS START HERE --------------
87
88// The simplest possible functions have no attributes set
89testFirstFn("function f() { }")
90testFirstFn("function f(x) { x }")
91
92// A function referencing a global needs parent scope, and it needs callee
93// (because parent scope is passed through callee)
94testFirstFn("function f() { x }", 'needsCallee', 'needsParentScope')
95
96// A function referencing "arguments" will have to be vararg. It also needs
97// the callee, as it needs to fill out "arguments.callee".
98testFirstFn("function f() { arguments }", 'needsCallee', 'isVarArg')
99
100// A function referencing "arguments" will have to be vararg. If it is
101// strict, it will not have to have a callee, though.
102testFirstFn("function f() {'use strict'; arguments }", 'isVarArg', 'isStrictMode')
103
104// A function defining "arguments" as a parameter will not be vararg.
105testFirstFn("function f(arguments) { arguments }")
106
107// A function defining "arguments" as a nested function will not be vararg.
108testFirstFn("function f() { function arguments() {}; arguments; }")
109
110// A function defining "arguments" as a local variable will be vararg.
111testFirstFn("function f() { var arguments; arguments; }", 'isVarArg', 'needsCallee')
112
113// A self-referencing function defined as a statement doesn't need a self
114// symbol, as it'll rather obtain itself from the parent scope.
115testFirstFn("function f() { f() }", 'needsCallee', 'needsParentScope')
116
117// A self-referencing function defined as an expression needs a self symbol,
118// as it can't obtain itself from the parent scope.
119testFirstFn("(function f() { f() })", 'needsCallee', 'needsSelfSymbol')
120
121// A child function accessing parent's variable triggers the need for scope
122// in parent
123testFirstFn("(function f() { var x; function g() { x } })", 'needsScope')
124
125// A child function accessing parent's parameter triggers the need for scope
126// in parent
127testFirstFn("(function f(x) { function g() { x } })", 'needsScope')
128
129// A child function accessing a global variable triggers the need for parent
130// scope in parent
131testFirstFn("(function f() { function g() { x } })", 'needsParentScope', 'needsCallee')
132
133// A child function redefining a local variable from its parent should not
134// affect the parent function in any way
135testFirstFn("(function f() { var x; function g() { var x; x } })")
136
137// Using "with" unleashes a lot of needs: parent scope, callee, own scope,
138// and all variables in scope. Actually, we could make "with" less wasteful,
139// and only put those variables in scope that it actually references, similar
140// to what nested functions do with variables in their parents.
141testFirstFn("(function f() { var o; with(o) {} })", 'needsParentScope', 'needsCallee', 'needsScope', 'hasWith', 'hasDeepWithOrEval', 'varsInScope')
142
143// Using "eval" is as bad as using "with" with the added requirement of
144// being vararg, 'cause we don't know if eval will be using "arguments".
145testFirstFn("(function f() { eval() })", 'needsParentScope', 'needsCallee', 'needsScope', 'hasEval', 'isVarArg', 'hasDeepWithOrEval', 'varsInScope')
146
147// Nested function using "with" is pretty much the same as the parent
148// function needing with.
149testFirstFn("(function f() { function g() { var o; with(o) {} } })", 'needsParentScope', 'needsCallee', 'needsScope', 'hasDeepWithOrEval', 'varsInScope')
150// Nested function using "eval" is almost the same as parent function using
151// eval, but at least the parent doesn't have to be vararg.
152testFirstFn("(function f() { function g() { eval() } })", 'needsParentScope', 'needsCallee', 'needsScope', 'hasDeepWithOrEval', 'varsInScope')
153
154// Function with 250 named parameters is ordinary
155testFirstFn("function f(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16, p17, p18, p19, p20, p21, p22, p23, p24, p25, p26, p27, p28, p29, p30, p31, p32, p33, p34, p35, p36, p37, p38, p39, p40, p41, p42, p43, p44, p45, p46, p47, p48, p49, p50, p51, p52, p53, p54, p55, p56, p57, p58, p59, p60, p61, p62, p63, p64, p65, p66, p67, p68, p69, p70, p71, p72, p73, p74, p75, p76, p77, p78, p79, p80, p81, p82, p83, p84, p85, p86, p87, p88, p89, p90, p91, p92, p93, p94, p95, p96, p97, p98, p99, p100, p101, p102, p103, p104, p105, p106, p107, p108, p109, p110, p111, p112, p113, p114, p115, p116, p117, p118, p119, p120, p121, p122, p123, p124, p125, p126, p127, p128, p129, p130, p131, p132, p133, p134, p135, p136, p137, p138, p139, p140, p141, p142, p143, p144, p145, p146, p147, p148, p149, p150, p151, p152, p153, p154, p155, p156, p157, p158, p159, p160, p161, p162, p163, p164, p165, p166, p167, p168, p169, p170, p171, p172, p173, p174, p175, p176, p177, p178, p179, p180, p181, p182, p183, p184, p185, p186, p187, p188, p189, p190, p191, p192, p193, p194, p195, p196, p197, p198, p199, p200, p201, p202, p203, p204, p205, p206, p207, p208, p209, p210, p211, p212, p213, p214, p215, p216, p217, p218, p219, p220, p221, p222, p223, p224, p225, p226, p227, p228, p229, p230, p231, p232, p233, p234, p235, p236, p237, p238, p239, p240, p241, p242, p243, p244, p245, p246, p247, p248, p249, p250) { p250 = p249 }")
156
157// Function with 251 named parameters is variable arguments
158testFirstFn("function f(p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16, p17, p18, p19, p20, p21, p22, p23, p24, p25, p26, p27, p28, p29, p30, p31, p32, p33, p34, p35, p36, p37, p38, p39, p40, p41, p42, p43, p44, p45, p46, p47, p48, p49, p50, p51, p52, p53, p54, p55, p56, p57, p58, p59, p60, p61, p62, p63, p64, p65, p66, p67, p68, p69, p70, p71, p72, p73, p74, p75, p76, p77, p78, p79, p80, p81, p82, p83, p84, p85, p86, p87, p88, p89, p90, p91, p92, p93, p94, p95, p96, p97, p98, p99, p100, p101, p102, p103, p104, p105, p106, p107, p108, p109, p110, p111, p112, p113, p114, p115, p116, p117, p118, p119, p120, p121, p122, p123, p124, p125, p126, p127, p128, p129, p130, p131, p132, p133, p134, p135, p136, p137, p138, p139, p140, p141, p142, p143, p144, p145, p146, p147, p148, p149, p150, p151, p152, p153, p154, p155, p156, p157, p158, p159, p160, p161, p162, p163, p164, p165, p166, p167, p168, p169, p170, p171, p172, p173, p174, p175, p176, p177, p178, p179, p180, p181, p182, p183, p184, p185, p186, p187, p188, p189, p190, p191, p192, p193, p194, p195, p196, p197, p198, p199, p200, p201, p202, p203, p204, p205, p206, p207, p208, p209, p210, p211, p212, p213, p214, p215, p216, p217, p218, p219, p220, p221, p222, p223, p224, p225, p226, p227, p228, p229, p230, p231, p232, p233, p234, p235, p236, p237, p238, p239, p240, p241, p242, p243, p244, p245, p246, p247, p248, p249, p250, p251) { p250 = p251 }", 'isVarArg')
159