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comparison: test/script/trusted/JDK-8006529.js

test/script/trusted/JDK-8006529.js

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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 /*
33 * This test script depends on nashorn Compiler internals. It uses reflection
34 * to get access to private field and many public methods of Compiler and
35 * FunctionNode classes. Note that this is trusted code and access to such
36 * internal package classes and methods is okay. But, if you modify any
37 * Compiler or FunctionNode class, you may have to revisit this script.
38 * We cannot use direct Java class (via dynalink bean linker) to Compiler
39 * and FunctionNode because of package-access check and so reflective calls.
40 */
41
42 var forName = java.lang.Class["forName(String)"];
43 var Parser = forName("jdk.nashorn.internal.parser.Parser").static
44 var Compiler = forName("jdk.nashorn.internal.codegen.Compiler").static
45 var Context = forName("jdk.nashorn.internal.runtime.Context").static
46 var ScriptEnvironment = forName("jdk.nashorn.internal.runtime.ScriptEnvironment").static
47 var Source = forName("jdk.nashorn.internal.runtime.Source").static
48 var FunctionNode = forName("jdk.nashorn.internal.ir.FunctionNode").static
49 var Block = forName("jdk.nashorn.internal.ir.Block").static
50 var VarNode = forName("jdk.nashorn.internal.ir.VarNode").static
51 var ExpressionStatement = forName("jdk.nashorn.internal.ir.ExpressionStatement").static
52 var UnaryNode = forName("jdk.nashorn.internal.ir.UnaryNode").static
53 var BinaryNode = forName("jdk.nashorn.internal.ir.BinaryNode").static
54 var ThrowErrorManager = forName("jdk.nashorn.internal.runtime.Context$ThrowErrorManager").static
55 var ErrorManager = forName("jdk.nashorn.internal.runtime.ErrorManager").static
56 var Debug = forName("jdk.nashorn.internal.runtime.Debug").static
57
58 var parseMethod = Parser.class.getMethod("parse");
59 var compileMethod = Compiler.class.getMethod("compile", FunctionNode.class);
60 var getBodyMethod = FunctionNode.class.getMethod("getBody");
61 var getStatementsMethod = Block.class.getMethod("getStatements");
62 var getInitMethod = VarNode.class.getMethod("getInit");
63 var getExpressionMethod = ExpressionStatement.class.getMethod("getExpression")
64 var rhsMethod = UnaryNode.class.getMethod("rhs")
65 var lhsMethod = BinaryNode.class.getMethod("lhs")
66 var binaryRhsMethod = BinaryNode.class.getMethod("rhs")
67 var debugIdMethod = Debug.class.getMethod("id", java.lang.Object.class)
68
69 // These are method names of methods in FunctionNode class
70 var allAssertionList = ['isVarArg', 'needsParentScope', 'needsCallee', 'hasScopeBlock', 'needsSelfSymbol', 'isSplit', 'hasEval', 'allVarsInScope', 'isStrict']
71
72 // corresponding Method objects of FunctionNode class
73 var functionNodeMethods = {};
74 // initialize FunctionNode methods
75 (function() {
76 for (var f in allAssertionList) {
77 var method = allAssertionList[f];
78 functionNodeMethods[method] = FunctionNode.class.getMethod(method);
79 }
80 })();
81
82 // returns functionNode.getBody().getStatements().get(0)
83 function getFirstFunction(functionNode) {
84 var f = findFunction(getBodyMethod.invoke(functionNode))
85 if (f == null) {
86 throw new Error();
87 }
88 return f;
89 }
90
91 function findFunction(node) {
92 if(node instanceof Block) {
93 var stmts = getStatementsMethod.invoke(node)
94 for(var i = 0; i < stmts.size(); ++i) {
95 var retval = findFunction(stmts.get(i))
96 if(retval != null) {
97 return retval;
98 }
99 }
100 } else if(node instanceof VarNode) {
101 return findFunction(getInitMethod.invoke(node))
102 } else if(node instanceof UnaryNode) {
103 return findFunction(rhsMethod.invoke(node))
104 } else if(node instanceof BinaryNode) {
105 return findFunction(lhsMethod.invoke(node)) || findFunction(binaryRhsMethod.invoke(node))
106 } else if(node instanceof ExpressionStatement) {
107 return findFunction(getExpressionMethod.invoke(node))
108 } else if(node instanceof FunctionNode) {
109 return node
110 }
111 }
112
113 var getContextMethod = Context.class.getMethod("getContext")
114 var getEnvMethod = Context.class.getMethod("getEnv")
115
116 var sourceForMethod = Source.class.getMethod("sourceFor", java.lang.String.class, java.lang.String.class)
117 var ParserConstructor = Parser.class.getConstructor(ScriptEnvironment.class, Source.class, ErrorManager.class)
118 var CompilerConstructor = Compiler.class.getConstructor(ScriptEnvironment.class)
119
120 // compile(script) -- compiles a script specified as a string with its
121 // source code, returns a jdk.nashorn.internal.ir.FunctionNode object
122 // representing it.
123 function compile(source) {
124 var source = sourceForMethod.invoke(null, "<no name>", source);
125
126 var env = getEnvMethod.invoke(getContextMethod.invoke(null))
127
128 var parser = ParserConstructor.newInstance(env, source, ThrowErrorManager.class.newInstance());
129 var func = parseMethod.invoke(parser);
130
131 var compiler = CompilerConstructor.newInstance(env);
132
133 return compileMethod.invoke(compiler, func);
134 };
135
136 var allAssertions = (function() {
137 var allAssertions = {}
138 for(var assertion in allAssertionList) {
139 allAssertions[allAssertionList[assertion]] = true
140 }
141 return allAssertions;
142 })();
143
144
145 // test(f[, assertions...]) tests whether all the specified assertions on the
146 // passed function node are true.
147 function test(f) {
148 var assertions = {}
149 for(var i = 1; i < arguments.length; ++i) {
150 var assertion = arguments[i]
151 if(!allAssertions[assertion]) {
152 throw "Unknown assertion " + assertion + " for " + f;
153 }
154 assertions[assertion] = true
155 }
156 for(var assertion in allAssertions) {
157 var expectedValue = !!assertions[assertion]
158 var actualValue = functionNodeMethods[assertion].invoke(f)
159 if(actualValue !== expectedValue) {
160 throw "Expected " + assertion + " === " + expectedValue + ", got " + actualValue + " for " + f + ":" + debugIdMethod.invoke(null, f);
161 }
162 }
163 }
164
165 // testFirstFn(script[, assertions...] tests whether all the specified
166 // assertions are true in the first function in the given script; "script"
167 // is a string with the source text of the script.
168 function testFirstFn(script) {
169 arguments[0] = getFirstFunction(compile(script))
170 test.apply(null, arguments)
171 }
172
173 // ---------------------------------- ACTUAL TESTS START HERE --------------
174
175 // The simplest possible functions have no attributes set
176 testFirstFn("function f() { }")
177 testFirstFn("function f(x) { x }")
178
179 // A function referencing a global needs parent scope, and it needs callee
180 // (because parent scope is passed through callee)
181 testFirstFn("function f() { x }", 'needsCallee', 'needsParentScope')
182
183 // A function referencing "arguments" will have to be vararg. It also needs
184 // the callee, as it needs to fill out "arguments.callee".
185 testFirstFn("function f() { arguments }", 'needsCallee', 'isVarArg')
186
187 // A function referencing "arguments" will have to be vararg. If it is
188 // strict, it will not have to have a callee, though.
189 testFirstFn("function f() {'use strict'; arguments }", 'isVarArg', 'isStrict')
190
191 // A function defining "arguments" as a parameter will not be vararg.
192 testFirstFn("function f(arguments) { arguments }")
193
194 // A function defining "arguments" as a nested function will not be vararg.
195 testFirstFn("function f() { function arguments() {}; arguments; }")
196
197 // A function defining "arguments" as a local variable will be vararg.
198 testFirstFn("function f() { var arguments; arguments; }", 'isVarArg', 'needsCallee')
199
200 // A self-referencing function defined as a statement doesn't need a self
201 // symbol, as it'll rather obtain itself from the parent scope.
202 testFirstFn("function f() { f() }", 'needsCallee', 'needsParentScope')
203
204 // A self-referencing function defined as an expression needs a self symbol,
205 // as it can't obtain itself from the parent scope.
206 testFirstFn("(function f() { f() })", 'needsCallee', 'needsSelfSymbol')
207
208 // A child function accessing parent's variable triggers the need for scope
209 // in parent
210 testFirstFn("(function f() { var x; function g() { x } })", 'hasScopeBlock')
211
212 // A child function accessing parent's parameter triggers the need for scope
213 // in parent
214 testFirstFn("(function f(x) { function g() { x } })", 'hasScopeBlock')
215
216 // A child function accessing a global variable triggers the need for parent
217 // scope in parent
218 testFirstFn("(function f() { function g() { x } })", 'needsParentScope', 'needsCallee')
219
220 // A child function redefining a local variable from its parent should not
221 // affect the parent function in any way
222 testFirstFn("(function f() { var x; function g() { var x; x } })")
223
224 // Using "with" on its own doesn't do much.
225 testFirstFn("(function f() { var o; with(o) {} })")
226
227 // "with" referencing a local variable triggers scoping.
228 testFirstFn("(function f() { var x; var y; with(x) { y } })", 'hasScopeBlock')
229
230 // "with" referencing a non-local variable triggers parent scope.
231 testFirstFn("(function f() { var x; with(x) { y } })", 'needsCallee', 'needsParentScope')
232
233 // Nested function using "with" is pretty much the same as the parent
234 // function needing with.
235 testFirstFn("(function f() { function g() { var o; with(o) {} } })")
236
237 // Nested function using "with" referencing a local variable.
238 testFirstFn("(function f() { var x; function g() { var o; with(o) { x } } })", 'hasScopeBlock')
239
240 // Using "eval" triggers pretty much everything. The function even needs to be
241 // vararg, 'cause we don't know if eval will be using "arguments".
242 testFirstFn("(function f() { eval() })", 'needsParentScope', 'needsCallee', 'hasScopeBlock', 'hasEval', 'isVarArg', 'allVarsInScope')
243
244 // Nested function using "eval" is almost the same as parent function using
245 // eval, but at least the parent doesn't have to be vararg.
246 testFirstFn("(function f() { function g() { eval() } })", 'needsParentScope', 'needsCallee', 'hasScopeBlock', 'allVarsInScope')
247
248 // Function with 250 named parameters is ordinary
249 testFirstFn("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 }")
250
251 // Function with 251 named parameters is variable arguments
252 testFirstFn("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')

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