cppcheck/test/testsimplifytokens.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki and Cppcheck team.
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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);
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TEST_CASE(cast1);
TEST_CASE(iftruefalse);
TEST_CASE(combine_strings);
TEST_CASE(double_plus);
TEST_CASE(redundant_plus);
TEST_CASE(parantheses1);
TEST_CASE(paranthesesVar); // Remove redundant parantheses around variable .. "( %var% )"
TEST_CASE(declareVar);
TEST_CASE(dontRemoveIncrement);
TEST_CASE(removePostIncrement);
TEST_CASE(removePreIncrement);
TEST_CASE(elseif1);
TEST_CASE(sizeof1);
TEST_CASE(sizeof2);
TEST_CASE(sizeof3);
TEST_CASE(sizeof4);
TEST_CASE(sizeof5);
TEST_CASE(sizeof6);
TEST_CASE(sizeof7);
TEST_CASE(sizeof8);
TEST_CASE(casting);
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TEST_CASE(template1);
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TEST_CASE(template2);
TEST_CASE(template3);
TEST_CASE(template4);
TEST_CASE(template5);
TEST_CASE(template6);
TEST_CASE(template7);
TEST_CASE(template8);
TEST_CASE(template9);
TEST_CASE(namespaces);
// Assignment in condition..
TEST_CASE(ifassign1);
// "if(0==x)" => "if(!x)"
TEST_CASE(ifnot);
TEST_CASE(combine_wstrings);
// Simplify "not" to "!" (#345)
TEST_CASE(not1);
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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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}
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void cast1()
{
const char code[] = "return (unsigned char *)str;";
const char expected[] = "return str;";
ASSERT_EQUALS(tok(expected), tok(code));
}
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; } ";
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const char code2[] = " void f ( ) { int a ; bool use ; use = false ; { if ( bb ) { a = 1 ; } } int c ; 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; } } ";
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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; } } ";
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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 combine_wstrings()
{
const char code1[] = "void foo()\n"
"{\n"
"const wchar_t *a =\n"
"{\n"
"L\"hello \"\n"
"L\"world\"\n"
"};\n"
"}\n";
const char code2[] = "void foo()\n"
"{\n"
"const wchar_t *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));
}
void paranthesesVar()
{
// remove parantheses..
ASSERT_EQUALS("= p ; ", tok("= (p);"));
ASSERT_EQUALS("if ( a < p ) { } ", tok("if(a<(p)){}"));
// keep parantheses..
ASSERT_EQUALS("= a ; ", tok("= (char)a;"));
ASSERT_EQUALS("cast < char * > ( p ) ", tok("cast<char *>(p)"));
}
void declareVar()
{
const char code[] = "void f ( ) { char str [ 100 ] = \"100\" ; } ";
ASSERT_EQUALS(code, tok(code));
}
void dontRemoveIncrement()
{
{
const char code[] = "void f(int a)\n"
"{\n"
" if (a > 10)\n"
" a = 5;\n"
" else\n"
" a = 10;\n"
" a++;\n"
"}\n";
ASSERT_EQUALS("void f ( int a ) { if ( a > 10 ) { a = 5 ; } else { a = 10 ; } a ++ ; } ", tok(code));
}
{
const char code[] = "void f(int a)\n"
"{\n"
" if (a > 10)\n"
" a = 5;\n"
" else\n"
" a = 10;\n"
" ++a;\n"
"}\n";
ASSERT_EQUALS("void f ( int a ) { if ( a > 10 ) { a = 5 ; } else { a = 10 ; } ++ a ; } ", tok(code));
}
}
void removePostIncrement()
{
const char code[] = "void f()\n"
"{\n"
" unsigned int c = 0;\n"
" c++;\n"
" if (c>0) { c++; }\n"
" c++;\n"
"}\n";
ASSERT_EQUALS("void f ( ) { int c ; c = 3 ; ; { ; } ; } ", tok(code));
}
void removePreIncrement()
{
const char code[] = "void f()\n"
"{\n"
" unsigned int c = 0;\n"
" ++c;\n"
" if (c>0) { ++c; }\n"
" ++c;\n"
"}\n";
ASSERT_EQUALS("void f ( ) { int c ; c = 3 ; ; { ; } ; } ", tok(code));
}
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("\n\n##file 0\n1: else { if ( ab ) { cd } else { ef } } gh\n", elseif(code));
}
// Simplify 'sizeof'..
std::string sizeof_(const char code[])
{
// tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.setVarId();
tokenizer.simplifyTokenList();
std::ostringstream ostr;
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
ostr << " " << tok->str();
return ostr.str();
}
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));
}
void sizeof2()
{
const char code[] = "void foo()\n"
"{\n"
" int i[4];\n"
" sizeof(i);\n"
" sizeof(*i);\n"
"}\n";
ASSERT_EQUALS(" void foo ( ) { int i [ 4 ] ; 16 ; 4 ; }", sizeof_(code));
}
void sizeof3()
{
const char code[] = "static int i[4];\n"
"void f()\n"
"{\n"
" int i[10];\n"
" sizeof(i);\n"
"}\n";
ASSERT_EQUALS(" static int i [ 4 ] ; void f ( ) { int i [ 10 ] ; 40 ; }", sizeof_(code));
}
void sizeof4()
{
const char code[] = "int i[10];\n"
"sizeof(i[0]);\n";
ASSERT_EQUALS(" int i [ 10 ] ; 4 ;", sizeof_(code));
}
void sizeof5()
{
const char code[] =
"for (int i = 0; i < sizeof(g_ReservedNames[0]); i++)"
"{}";
ASSERT_EQUALS(" for ( int i = 0 ; i < 100 ; i ++ ) { }", sizeof_(code));
}
void sizeof6()
{
const char code[] = ";int i;\n"
"sizeof(i);\n";
std::ostringstream expected;
expected << " ; int i ; " << sizeof(int) << " ;";
ASSERT_EQUALS(expected.str(), sizeof_(code));
}
void sizeof7()
{
const char code[] = ";INT32 i[10];\n"
"sizeof(i[0]);\n";
ASSERT_EQUALS(" ; INT32 i [ 10 ] ; sizeof ( i [ 0 ] ) ;", sizeof_(code));
}
void sizeof8()
{
{
const char code[] = "void f()\n"
"{\n"
" char* ptrs[2];\n"
" int a = sizeof( ptrs );\n"
"}\n";
std::ostringstream oss;
oss << (sizeof(void *) * 2);
ASSERT_EQUALS(" void f ( ) { char * ptrs [ 2 ] ; int a ; a = " + oss.str() + " ; }", sizeof_(code));
}
{
const char code[] = "void f()\n"
"{\n"
" char* ptrs[55];\n"
" int a = sizeof( ptrs );\n"
"}\n";
std::ostringstream oss;
oss << (sizeof(void *) * 55);
ASSERT_EQUALS(" void f ( ) { char * ptrs [ 55 ] ; int a ; a = " + oss.str() + " ; }", sizeof_(code));
}
{
const char code[] = "void f()\n"
"{\n"
" char* ptrs;\n"
" int a = sizeof( ptrs );\n"
"}\n";
std::ostringstream oss;
oss << sizeof(void *);
ASSERT_EQUALS(" void f ( ) { char * ptrs ; int a ; a = " + oss.str() + " ; }", sizeof_(code));
}
}
void casting()
{
const char code[] = "void f()\n"
"{\n"
"for (int i = 0; i < static_cast<int>(3); ++i) {}\n"
"}\n";
const std::string expected(" void f ( ) { for ( int i = 0 ; i < 3 ; ++ i ) { } }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template1()
{
const char code[] = "template <classname T> void f(T val) { T a; }\n"
"f<int>(10);";
const std::string expected(" "
"template < classname T > void f ( T val ) { T a ; } "
"f<int> ( 10 ) ; "
"void f<int> ( int val ) { int a ; }");
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ASSERT_EQUALS(expected, sizeof_(code));
}
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void template2()
{
const char code[] = "template <classname T> class Fred { T a; };\n"
"Fred<int> fred;";
const std::string expected(" "
"template < classname T > class Fred { T a ; } ; "
"Fred<int> fred ; "
"class Fred<int> { int a ; }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template3()
{
const char code[] = "template <classname T, int sz> class Fred { T data[sz]; };\n"
"Fred<float,4> fred;";
const std::string expected(" "
"template < classname T , int sz > class Fred { T data [ sz ] ; } ; "
"Fred<float,4> fred ; "
"class Fred<float,4> { float data [ 4 ] ; }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template4()
{
const char code[] = "template <classname T> class Fred { Fred(); };\n"
"Fred<float> fred;";
const std::string expected(" "
"template < classname T > class Fred { Fred ( ) ; } ; "
"Fred<float> fred ; "
"class Fred<float> { Fred<float> ( ) ; }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template5()
{
const char code[] = "template <classname T> class Fred { };\n"
"template <classname T> Fred<T>::Fred() { }\n"
"Fred<float> fred;";
const std::string expected(" "
"template < classname T > class Fred { } ; "
"template < classname T > Fred < T > :: Fred ( ) { } "
"Fred<float> fred ; "
"class Fred<float> { } "
"Fred<float> :: Fred<float> ( ) { }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template6()
{
const char code[] = "template <classname T> class Fred { };\n"
"Fred<float> fred1;\n"
"Fred<float> fred2;";
const std::string expected(" template < classname T > class Fred { } ;"
" Fred<float> fred1 ;"
" Fred<float> fred2 ;"
" class Fred<float> { }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template7()
{
// A template class that is not used => no simplification
{
const char code[] = "template <class T>\n"
"class ABC\n"
"{\n"
"public:\n"
" typedef ABC<T> m;\n"
"\n"
"};\n";
const std::string expected(" template < class T > "
"class ABC "
"{ "
"public: "
"typedef ABC < T > m ; "
"} ;");
ASSERT_EQUALS(expected, sizeof_(code));
}
{
const char code[] = "template <typename T> class ABC {\n"
"public:\n"
" typedef std::vector<T> type;\n"
"};\n"
"int main() {\n"
" ABC<int>::type v;\n"
" v.push_back(4);\n"
" return 0;\n"
"}\n";
const std::string expected(" template < typename T > class ABC {"
" public: "
"typedef std :: vector < T > type ; "
"} ; "
"int main ( ) { "
"std :: vector < int > v ; "
"v . push_back ( 4 ) ; "
"return 0 ; "
"}");
TODO_ASSERT_EQUALS(expected, sizeof_(code));
}
{
const char code[] = "template <typename T> class ABC {\n"
"public:\n"
" typedef std::vector<T> type;\n"
" void f()\n"
" {\n"
" ABC<int>::type v;\n"
" v.push_back(4);\n"
" }\n"
"};\n"
"\n"
"int main() {\n"
" return 0;\n"
"}";
const std::string expected(" template < typename T > class ABC "
"{"
" public: typedef std :: vector < T > type ;"
" void f ( ) "
"{ "
"std :: vector < int > v ;"
" v . push_back ( 4 ) ;"
" } "
"} ; "
"int main ( ) { return 0 ; }");
TODO_ASSERT_EQUALS(expected, sizeof_(code));
}
}
// Template definitions but no usage => no expansion
void template8()
{
const char code[] = "template<typename T> class A;\n"
"template<typename T> class B;\n"
"\n"
"typedef A<int> x;\n"
"typedef B<int> y;\n"
"\n"
"template<typename T> class A {\n"
" void f() {\n"
" B<T> a = B<T>::g();\n"
" T b = 0;\n"
" if (b)\n"
" b = 0;\n"
" }\n"
"};\n"
"\n"
"template<typename T> inline B<T> h() { return B<T>(); }\n";
const std::string expected(" template < typename T > class A ;"
" template < typename T > class B ;"
""
" typedef A < int > x ;"
" typedef B < int > y ;"
""
" template < typename T > class A {"
" void f ( ) {"
" B < T > a = B < T > :: g ( ) ;"
" T b ; b = 0 ;"
" }"
" } ;"
""
" template < typename T > inline B < T > h ( ) { return B < T > ( ) ; }");
ASSERT_EQUALS(expected, sizeof_(code));
}
void template9()
{
const char code[] = "template < typename T > class A { } ;\n"
"\n"
"void f ( ) {\n"
" A<int> a ;\n"
"}\n"
"\n"
"template < typename T >\n"
"class B {\n"
" void g ( ) {\n"
" A < T > b = A < T > :: h ( ) ;\n"
" }\n"
"} ;\n";
// The expected result..
std::string expected(std::string(" ") + code + " class A<int> { }");
std::string::size_type pos;
while ((pos = expected.find("\n")) != std::string::npos)
expected[pos] = ' ';
while ((pos = expected.find(" ")) != std::string::npos)
expected.erase(pos, 1);
ASSERT_EQUALS(expected, sizeof_(code));
}
void namespaces()
{
{
const char code[] = "using namespace std; namespace a{ namespace b{ void f(){} } }";
const std::string expected(" using namespace std ; void f ( ) { }");
ASSERT_EQUALS(expected, sizeof_(code));
}
{
const char code[] = "namespace b{ void f(){} }";
const std::string expected(" void f ( ) { }");
ASSERT_EQUALS(expected, sizeof_(code));
}
{
const char code[] = "int a; namespace b{ }";
const std::string expected(" int a ;");
ASSERT_EQUALS(expected, sizeof_(code));
}
}
std::string simplifyIfAssign(const char code[])
{
// tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyIfAssign();
std::ostringstream ostr;
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
ostr << (tok->previous() ? " " : "") << tok->str();
return ostr.str();
}
void ifassign1()
{
ASSERT_EQUALS("; a = b ; if ( a ) ;", simplifyIfAssign(";if(a=b);"));
ASSERT_EQUALS("; a = b ( ) ; if ( ( a ) ) ;", simplifyIfAssign(";if((a=b()));"));
ASSERT_EQUALS("; a = b ( ) ; if ( ! ( a ) ) ;", simplifyIfAssign(";if(!(a=b()));"));
}
std::string simplifyIfNot(const char code[])
{
// tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyIfNot();
std::ostringstream ostr;
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
ostr << (tok->previous() ? " " : "") << tok->str();
return ostr.str();
}
void ifnot()
{
ASSERT_EQUALS("if ( ! x )", simplifyIfNot("if(0==x)"));
ASSERT_EQUALS("if ( ! ( a = b ) )", simplifyIfNot("if(0==(a=b))"));
ASSERT_EQUALS("if ( ! x )", simplifyIfNot("if(x==0)"));
ASSERT_EQUALS("if ( ! a && b ( ) )", simplifyIfNot("if( 0 == a && b() )"));
ASSERT_EQUALS("if ( b ( ) && ! a )", simplifyIfNot("if( b() && 0 == a )"));
ASSERT_EQUALS("if ( ! ( a = b ) )", simplifyIfNot("if((a=b)==0)"));
}
std::string simplifyNot(const char code[])
{
// tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyNot();
std::ostringstream ostr;
for (const Token *tok = tokenizer.tokens(); tok; tok = tok->next())
ostr << (tok->previous() ? " " : "") << tok->str();
return ostr.str();
}
void not1()
{
ASSERT_EQUALS("if ( ! p )", simplifyNot("if (not p)"));
ASSERT_EQUALS("if ( p && ! q )", simplifyNot("if (p && not q)"));
ASSERT_EQUALS("void foo ( not i )", simplifyNot("void foo ( not i )"));
}
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};
REGISTER_TEST(TestSimplifyTokens)