102 lines
3.7 KiB
C++
102 lines
3.7 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2018 Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "astutils.h"
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#include "settings.h"
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#include "testsuite.h"
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#include "token.h"
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#include "tokenize.h"
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#include "tokenlist.h"
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class TestAstUtils : public TestFixture {
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public:
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TestAstUtils() : TestFixture("TestAstUtils") {
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}
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private:
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void run() override {
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TEST_CASE(isReturnScope);
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TEST_CASE(isVariableChanged);
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TEST_CASE(isVariableChangedByFunctionCall);
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}
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bool isReturnScope(const char code[], int offset) {
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Settings settings;
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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const Token * const tok = (offset < 0)
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? tokenizer.list.back()->tokAt(1+offset)
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: tokenizer.tokens()->tokAt(offset);
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return ::isReturnScope(tok);
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}
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void isReturnScope() {
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ASSERT_EQUALS(true, isReturnScope("void f() { if (a) { return; } }", -2));
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ASSERT_EQUALS(true, isReturnScope("void f() { if (a) { return (ab){0}; } }", -2)); // #7103
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ASSERT_EQUALS(false, isReturnScope("void f() { if (a) { return (ab){0}; } }", -4)); // #7103
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ASSERT_EQUALS(true, isReturnScope("void f() { if (a) { {throw new string(x);}; } }", -4)); // #7144
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ASSERT_EQUALS(true, isReturnScope("void f() { if (a) { {throw new string(x);}; } }", -2)); // #7144
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}
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bool isVariableChanged(const char code[], const char startPattern[], const char endPattern[]) {
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Settings settings;
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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const Token * const tok1 = Token::findsimplematch(tokenizer.tokens(), startPattern);
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const Token * const tok2 = Token::findsimplematch(tokenizer.tokens(), endPattern);
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return ::isVariableChanged(tok1,tok2,1,false,&settings,true);
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}
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void isVariableChanged() {
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// #8211 - no lhs for >> , do not crash
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isVariableChanged("void f() {\n"
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" int b;\n"
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" if (b) { (int)((INTOF(8))result >> b); }\n"
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"}", "if", "}");
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}
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bool isVariableChangedByFunctionCall(const char code[], const char pattern[], bool *inconclusive) {
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Settings settings;
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Tokenizer tokenizer(&settings, this);
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std::istringstream istr(code);
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tokenizer.tokenize(istr, "test.cpp");
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const Token * const argtok = Token::findmatch(tokenizer.tokens(), pattern);
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return ::isVariableChangedByFunctionCall(argtok, &settings, inconclusive);
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}
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void isVariableChangedByFunctionCall() {
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const char *code;
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bool inconclusive;
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// #8271 - template method
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code = "void f(int x) {\n"
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" a<int>(x);\n"
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"}";
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inconclusive = false;
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ASSERT_EQUALS(false, isVariableChangedByFunctionCall(code, "x ) ;", &inconclusive));
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ASSERT_EQUALS(true, inconclusive);
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}
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};
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REGISTER_TEST(TestAstUtils)
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