cppcheck/test/testsimplifytokens.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
* Leandro Penz, Kimmo Varis
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*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/
*/
#include "testsuite.h"
#include "../src/tokenize.h"
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#include <sstream>
extern std::ostringstream errout;
// A test tokenizer where protected functions are made public
class OpenTokenizer : public Tokenizer
{
public:
OpenTokenizer(const char code[]) : Tokenizer()
{
std::istringstream istr(code);
tokenize(istr, "test.cpp");
}
virtual ~OpenTokenizer()
{ }
bool elseif_()
{
return elseif();
}
};
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class TestSimplifyTokens : public TestFixture
{
public:
TestSimplifyTokens() : TestFixture("TestSimplifyTokens")
{ }
private:
void run()
{
TEST_CASE(cast0);
TEST_CASE(sizeof1);
TEST_CASE(iftruefalse);
TEST_CASE(combine_strings);
TEST_CASE(double_plus);
TEST_CASE(redundant_plus);
TEST_CASE(parantheses1);
TEST_CASE(elseif1);
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}
std::string tok(const char code[])
{
std::istringstream istr(code);
Tokenizer tokenizer;
tokenizer.tokenize(istr, "test.cpp");
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tokenizer.simplifyTokenList();
std::string ret;
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
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{
ret += tok->str() + " ";
}
return ret;
}
void cast0()
{
const char code1[] = " if ( p == (char *)0 ) ";
const char code2[] = " if ( p == 0 ) ";
ASSERT_EQUALS(tok(code1), tok(code2));
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}
void sizeof1()
{
const char code1[] = " struct ABC *abc = malloc(sizeof(*abc)); ";
const char code2[] = " struct ABC *abc = malloc(100); ";
const char code3[] = " struct ABC *abc = malloc(sizeof *abc ); ";
ASSERT_EQUALS(tok(code1), tok(code2));
ASSERT_EQUALS(tok(code2), tok(code3));
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}
void iftruefalse()
{
{
const char code1[] = " void f() { int a; bool use = false; if( use ) { a=0; } else {a=1;} } ";
const char code2[] = " void f() { int a; bool use = false; {a=1;} } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = true; if( use ) { a=0; } else {a=1;} } ";
const char code2[] = " void f() { int a; bool use = true; { a=0; } } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; int use = 5; if( use ) { a=0; } else {a=1;} } ";
const char code2[] = " void f() { int a; int use = 5; { a=0; } } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; int use = 0; if( use ) { a=0; } else {a=1;} } ";
const char code2[] = " void f() { int a; int use = 0; {a=1;} } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = false; if( use ) a=0; else a=1; int c=1; } ";
const char code2[] = " void f() { int a; bool use = false; { a=1; } int c=1; } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = true; if( use ) a=0; else a=1; int c=1; } ";
const char code2[] = " void f() { int a; bool use = true; { a=0; } int c=1; } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = false; if( use ) a=0; else if( bb ) a=1; int c=1; } ";
const char code2[] = " void f() { int a; bool use = false; if( bb ) a=1; int c=1; } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = true; if( use ) a=0; else if( bb ) a=1; int c=1; } ";
const char code2[] = " void f() { int a; bool use = true; { a=0;} int c=1; } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { int a; bool use = true; if( use ) a=0; else if( bb ) a=1; else if( cc ) a=33; else { gg = 0; } int c=1; } ";
const char code2[] = " void f() { int a; bool use = true; { a=0; }int c=1; } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { if( aa ) { a=0; } else if( true ) a=1; else { a=2; } } ";
const char code2[] = " void f() { if( aa ) { a=0; } else { a=1; } } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
{
const char code1[] = " void f() { if( aa ) { a=0; } else if( false ) a=1; else { a=2; } } ";
const char code2[] = " void f() { if( aa ) { a=0; } else { a=2; } } ";
ASSERT_EQUALS(tok(code2), tok(code1));
}
}
void combine_strings()
{
const char code1[] = "void foo()\n"
"{\n"
"const char *a =\n"
"{\n"
"\"hello \"\n"
"\"world\"\n"
"};\n"
"}\n";
const char code2[] = "void foo()\n"
"{\n"
"const char *a =\n"
"{\n"
"\"hello world\"\n"
"};\n"
"}\n";
ASSERT_EQUALS(tok(code2), tok(code1));
}
void double_plus()
{
{
const char code1[] = "void foo( int a )\n"
"{\n"
"a++;\n"
"a--;\n"
"++a;\n"
"--a;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a ) { a ++ ; a -- ; ++ a ; -- a ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a )\n"
"{\n"
"a=a+a;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a ) { a = a + a ; } ", tok(code1));
}
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{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a+++b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a ++ + b ; } ", tok(code1));
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}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a---b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a -- - b ; } ", tok(code1));
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}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a--+b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a -- + b ; } ", tok(code1));
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}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a++-b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a ++ - b ; } ", tok(code1));
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}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a+--b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a + -- b ; } ", tok(code1));
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}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a-++b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a - ++ b ; } ", tok(code1));
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}
}
void redundant_plus()
{
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a + + b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a + b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a + + + b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a + b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a + - b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a - b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a - + b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a - b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a - - b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a + b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a - + - b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a + b ; } ", tok(code1));
}
{
const char code1[] = "void foo( int a, int b )\n"
"{\n"
"a=a - - - b;\n"
"}\n";
ASSERT_EQUALS("void foo ( int a , int b ) { a = a - b ; } ", tok(code1));
}
}
void parantheses1()
{
const char code1[] = "<= (10+100);";
ASSERT_EQUALS("<= 110 ; ", tok(code1));
}
std::string elseif(const char code[])
{
std::istringstream istr(code);
OpenTokenizer tokenizer(code);
tokenizer.elseif_();
return tokenizer.tokens()->stringifyList(false);
}
void elseif1()
{
const char code[] = "else if(ab) { cd } else { ef }gh";
ASSERT_EQUALS("\n1: else { if ( ab ) { cd } else { ef } } gh\n", elseif(code));
}
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};
REGISTER_TEST(TestSimplifyTokens)