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cppcheck/test/testtoken.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2021 Cppcheck team.
*
* 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 "config.h"
#include "settings.h"
#include "testsuite.h"
#include "testutils.h"
#include "token.h"
#include "tokenize.h"
#include "tokenlist.h"
#include "valueflow.h"
#include <algorithm>
#include <iosfwd>
#include <string>
#include <vector>
struct InternalError;
class TestToken : public TestFixture {
public:
TestToken() : TestFixture("TestToken") {}
private:
std::vector<std::string> arithmeticalOps;
std::vector<std::string> logicalOps;
std::vector<std::string> bitOps;
std::vector<std::string> comparisonOps;
std::vector<std::string> extendedOps;
std::vector<std::string> assignmentOps;
void run() OVERRIDE {
arithmeticalOps = { "+", "-", "*", "/", "%", "<<", ">>" };
logicalOps = { "&&", "||", "!" };
comparisonOps = { "==", "!=", "<", "<=", ">", ">=" };
bitOps = { "&", "|", "^", "~" };
extendedOps = { ",", "[", "]", "(", ")", "?", ":" };
assignmentOps = { "=", "+=", "-=", "*=", "/=", "%=", "&=", "^=", "|=", "<<=", ">>=" };
TEST_CASE(nextprevious);
TEST_CASE(multiCompare);
TEST_CASE(multiCompare2); // #3294 - false negative multi compare between "=" and "=="
TEST_CASE(multiCompare3); // false positive for %or% on code using "|="
TEST_CASE(multiCompare4);
TEST_CASE(multiCompare5);
TEST_CASE(charTypes);
TEST_CASE(stringTypes);
TEST_CASE(getStrLength);
TEST_CASE(getStrSize);
TEST_CASE(getCharAt);
TEST_CASE(strValue);
TEST_CASE(concatStr);
TEST_CASE(deleteLast);
TEST_CASE(deleteFirst);
TEST_CASE(nextArgument);
TEST_CASE(eraseTokens);
TEST_CASE(matchAny);
TEST_CASE(matchSingleChar);
TEST_CASE(matchNothingOrAnyNotElse);
TEST_CASE(matchType);
TEST_CASE(matchChar);
TEST_CASE(matchCompOp);
TEST_CASE(matchStr);
TEST_CASE(matchVarid);
TEST_CASE(matchNumeric);
TEST_CASE(matchBoolean);
TEST_CASE(matchOr);
TEST_CASE(matchOp);
TEST_CASE(matchConstOp);
TEST_CASE(isArithmeticalOp);
TEST_CASE(isOp);
TEST_CASE(isConstOp);
TEST_CASE(isExtendedOp);
TEST_CASE(isAssignmentOp);
TEST_CASE(isStandardType);
TEST_CASE(literals);
TEST_CASE(operators);
TEST_CASE(updateProperties);
TEST_CASE(isNameGuarantees1);
TEST_CASE(isNameGuarantees2);
TEST_CASE(isNameGuarantees3);
TEST_CASE(isNameGuarantees4);
TEST_CASE(isNameGuarantees5);
TEST_CASE(isNameGuarantees6);
TEST_CASE(canFindMatchingBracketsNeedsOpen);
TEST_CASE(canFindMatchingBracketsInnerPair);
TEST_CASE(canFindMatchingBracketsOuterPair);
TEST_CASE(canFindMatchingBracketsWithTooManyClosing);
TEST_CASE(canFindMatchingBracketsWithTooManyOpening);
TEST_CASE(findClosingBracket);
TEST_CASE(expressionString);
TEST_CASE(hasKnownIntValue);
}
void nextprevious() const {
Token *token = new Token();
token->str("1");
token->insertToken("2");
token->next()->insertToken("3");
Token *last = token->tokAt(2);
ASSERT_EQUALS(token->str(), "1");
ASSERT_EQUALS(token->next()->str(), "2");
// cppcheck-suppress redundantNextPrevious - this is intentional
ASSERT_EQUALS(token->tokAt(2)->str(), "3");
ASSERT_EQUALS_MSG(true, last->next() == nullptr, "Null was expected");
ASSERT_EQUALS(last->str(), "3");
ASSERT_EQUALS(last->previous()->str(), "2");
// cppcheck-suppress redundantNextPrevious - this is intentional
ASSERT_EQUALS(last->tokAt(-2)->str(), "1");
ASSERT_EQUALS_MSG(true, token->previous() == nullptr, "Null was expected");
TokenList::deleteTokens(token);
}
#define MatchCheck(...) MatchCheck_(__FILE__, __LINE__, __VA_ARGS__)
bool MatchCheck_(const char* file, int line, const std::string& code, const std::string& pattern, unsigned int varid = 0) {
static const Settings settings;
Tokenizer tokenizer(&settings, this);
std::istringstream istr(";" + code + ";");
try {
ASSERT_LOC(tokenizer.tokenize(istr, "test.cpp"), file, line);
} catch (...) {}
return Token::Match(tokenizer.tokens()->next(), pattern.c_str(), varid);
}
void multiCompare() const {
// Test for found
Token one;
one.str("one");
ASSERT_EQUALS(1, Token::multiCompare(&one, "one|two", 0));
Token two;
two.str("two");
ASSERT_EQUALS(1, Token::multiCompare(&two, "one|two", 0));
ASSERT_EQUALS(1, Token::multiCompare(&two, "verybig|two|", 0));
// Test for empty string found
Token notfound;
notfound.str("notfound");
ASSERT_EQUALS(0, Token::multiCompare(&notfound, "one|two|", 0));
// Test for not found
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&notfound, "one|two", 0)));
Token s;
s.str("s");
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&s, "verybig|two", 0)));
Token ne;
ne.str("ne");
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&ne, "one|two", 0)));
Token a;
a.str("a");
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&a, "abc|def", 0)));
Token abcd;
abcd.str("abcd");
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&abcd, "abc|def", 0)));
Token def;
def.str("default");
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare(&def, "abc|def", 0)));
// %op%
Token plus;
plus.str("+");
ASSERT_EQUALS(1, Token::multiCompare(&plus, "one|%op%", 0));
ASSERT_EQUALS(1, Token::multiCompare(&plus, "%op%|two", 0));
Token x;
x.str("x");
ASSERT_EQUALS(-1, Token::multiCompare(&x, "one|%op%", 0));
ASSERT_EQUALS(-1, Token::multiCompare(&x, "%op%|two", 0));
}
void multiCompare2() const { // #3294
// Original pattern that failed: [[,(=<>+-*|&^] %num% [+-*/] %num% ]|,|)|;|=|%op%
givenACodeSampleToTokenize toks("a == 1", true);
ASSERT_EQUALS(true, Token::Match(toks.tokens(), "a =|%op%"));
}
void multiCompare3() const {
// Original pattern that failed: "return|(|&&|%oror% %name% &&|%oror%|==|!=|<=|>=|<|>|-|%or% %name% )|&&|%oror%|;"
// Code snippet that failed: "return lv@86 |= rv@87 ;"
// Note: Also test "reverse" alternative pattern, two different code paths to handle it
givenACodeSampleToTokenize toks("return a |= b ;", true);
ASSERT_EQUALS(false, Token::Match(toks.tokens(), "return %name% xyz|%or% %name% ;"));
ASSERT_EQUALS(false, Token::Match(toks.tokens(), "return %name% %or%|xyz %name% ;"));
givenACodeSampleToTokenize toks2("return a | b ;", true);
ASSERT_EQUALS(true, Token::Match(toks2.tokens(), "return %name% xyz|%or% %name% ;"));
ASSERT_EQUALS(true, Token::Match(toks2.tokens(), "return %name% %or%|xyz %name% ;"));
givenACodeSampleToTokenize toks3("return a || b ;", true);
ASSERT_EQUALS(false, Token::Match(toks3.tokens(), "return %name% xyz|%or% %name% ;"));
ASSERT_EQUALS(false, Token::Match(toks3.tokens(), "return %name% %or%|xyz %name% ;"));
ASSERT_EQUALS(true, Token::Match(toks3.tokens(), "return %name% xyz|%oror% %name% ;"));
ASSERT_EQUALS(true, Token::Match(toks3.tokens(), "return %name% %oror%|xyz %name% ;"));
givenACodeSampleToTokenize toks4("a % b ;", true);
ASSERT_EQUALS(true, Token::Match(toks4.tokens(), "%name% >>|<<|&|%or%|^|% %name% ;"));
ASSERT_EQUALS(true, Token::Match(toks4.tokens(), "%name% %|>>|<<|&|%or%|^ %name% ;"));
ASSERT_EQUALS(true, Token::Match(toks4.tokens(), "%name% >>|<<|&|%or%|%|^ %name% ;"));
//%name%|%num% support
givenACodeSampleToTokenize num("100", true);
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%num%|%name%"));
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%name%|%num%"));
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%name%|%num%|%bool%"));
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%name%|%bool%|%num%"));
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%name%|%bool%|%str%|%num%"));
ASSERT_EQUALS(false, Token::Match(num.tokens(), "%bool%|%name%"));
ASSERT_EQUALS(false, Token::Match(num.tokens(), "%type%|%bool%|%char%"));
ASSERT_EQUALS(true, Token::Match(num.tokens(), "%type%|%bool%|100"));
givenACodeSampleToTokenize numparen("( 100 )", true);
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| %num%|%name% )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| %name%|%num% )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| %name%|%num%|%bool% )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| %name%|%bool%|%num% )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| %name%|%bool%|%str%|%num% )|"));
ASSERT_EQUALS(false, Token::Match(numparen.tokens(), "(| %bool%|%name% )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %num%|%name%| )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %name%|%num%| )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %name%|%num%|%bool%| )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %name%|%bool%|%num%| )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %name%|%bool%|%str%|%num%| )|"));
ASSERT_EQUALS(true, Token::Match(numparen.tokens(), "(| 100 %bool%|%name%| )|"));
}
void multiCompare4() const {
givenACodeSampleToTokenize var("std :: queue < int > foo ;");
ASSERT_EQUALS(Token::eBracket, var.tokens()->tokAt(3)->tokType());
ASSERT_EQUALS(Token::eBracket, var.tokens()->tokAt(5)->tokType());
ASSERT_EQUALS(false, Token::Match(var.tokens(), "std :: queue %op%"));
ASSERT_EQUALS(false, Token::Match(var.tokens(), "std :: queue x|%op%"));
ASSERT_EQUALS(false, Token::Match(var.tokens(), "std :: queue %op%|x"));
}
void multiCompare5() const {
Token tok;
tok.str("||");
ASSERT_EQUALS(true, Token::multiCompare(&tok, "+|%or%|%oror%", 0) >= 0);
}
void charTypes() const {
Token tok;
tok.str("'a'");
ASSERT_EQUALS(true, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("u8'a'");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(true, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("u'a'");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(true, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("U'a'");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(true, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("L'a'");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(true, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("'aaa'");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(true, tok.isCMultiChar());
}
void stringTypes() const {
Token tok;
tok.str("\"a\"");
ASSERT_EQUALS(true, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("u8\"a\"");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(true, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("u\"a\"");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(true, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("U\"a\"");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(true, tok.isUtf32());
ASSERT_EQUALS(false, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
tok.str("L\"a\"");
ASSERT_EQUALS(false, tok.isCChar());
ASSERT_EQUALS(false, tok.isUtf8());
ASSERT_EQUALS(false, tok.isUtf16());
ASSERT_EQUALS(false, tok.isUtf32());
ASSERT_EQUALS(true, tok.isLong());
ASSERT_EQUALS(false, tok.isCMultiChar());
}
void getStrLength() const {
Token tok;
tok.str("\"\"");
ASSERT_EQUALS(0, Token::getStrLength(&tok));
tok.str("\"test\"");
ASSERT_EQUALS(4, Token::getStrLength(&tok));
tok.str("\"test \\\\test\"");
ASSERT_EQUALS(10, Token::getStrLength(&tok));
tok.str("\"a\\0\"");
ASSERT_EQUALS(1, Token::getStrLength(&tok));
tok.str("L\"\"");
ASSERT_EQUALS(0, Token::getStrLength(&tok));
tok.str("u8\"test\"");
ASSERT_EQUALS(4, Token::getStrLength(&tok));
tok.str("U\"test \\\\test\"");
ASSERT_EQUALS(10, Token::getStrLength(&tok));
tok.str("u\"a\\0\"");
ASSERT_EQUALS(1, Token::getStrLength(&tok));
}
void getStrSize() const {
Token tok;
Settings settings;
tok.str("\"\"");
ASSERT_EQUALS(sizeof(""), Token::getStrSize(&tok, &settings));
tok.str("\"abc\"");
ASSERT_EQUALS(sizeof("abc"), Token::getStrSize(&tok, &settings));
tok.str("\"\\0abc\"");
ASSERT_EQUALS(sizeof("\0abc"), Token::getStrSize(&tok, &settings));
tok.str("\"\\\\\"");
ASSERT_EQUALS(sizeof("\\"), Token::getStrSize(&tok, &settings));
}
void getCharAt() const {
Token tok;
tok.str("\"asdf\"");
ASSERT_EQUALS("a", Token::getCharAt(&tok, 0));
ASSERT_EQUALS("s", Token::getCharAt(&tok, 1));
tok.str("\"a\\ts\"");
ASSERT_EQUALS("\\t", Token::getCharAt(&tok, 1));
tok.str("\"\"");
ASSERT_EQUALS("\\0", Token::getCharAt(&tok, 0));
tok.str("L\"a\\ts\"");
ASSERT_EQUALS("a", Token::getCharAt(&tok, 0));
ASSERT_EQUALS("\\t", Token::getCharAt(&tok, 1));
tok.str("u\"a\\ts\"");
ASSERT_EQUALS("\\t", Token::getCharAt(&tok, 1));
ASSERT_EQUALS("s", Token::getCharAt(&tok, 2));
}
void strValue() const {
Token tok;
tok.str("\"\"");
ASSERT_EQUALS("", tok.strValue());
tok.str("\"0\"");
ASSERT_EQUALS("0", tok.strValue());
tok.str("\"a\\n\"");
ASSERT_EQUALS("a\n", tok.strValue());
tok.str("\"a\\r\"");
ASSERT_EQUALS("a\r", tok.strValue());
tok.str("\"a\\t\"");
ASSERT_EQUALS("a\t", tok.strValue());
tok.str("\"\\\\\"");
ASSERT_EQUALS("\\", tok.strValue());
tok.str("\"a\\0\"");
ASSERT_EQUALS("a", tok.strValue());
tok.str("L\"a\\t\"");
ASSERT_EQUALS("a\t", tok.strValue());
tok.str("U\"a\\0\"");
ASSERT_EQUALS("a", tok.strValue());
}
void concatStr() const {
Token tok;
tok.str("\"\"");
tok.concatStr("\"\"");
ASSERT_EQUALS("", tok.strValue());
ASSERT(tok.isCChar());
tok.str("\"ab\"");
tok.concatStr("\"cd\"");
ASSERT_EQUALS("abcd", tok.strValue());
ASSERT(tok.isCChar());
tok.str("L\"ab\"");
tok.concatStr("L\"cd\"");
ASSERT_EQUALS("abcd", tok.strValue());
ASSERT(tok.isLong());
tok.str("L\"ab\"");
tok.concatStr("\"cd\"");
ASSERT_EQUALS("abcd", tok.strValue());
ASSERT(tok.isLong());
tok.str("\"ab\"");
tok.concatStr("L\"cd\"");
ASSERT_EQUALS("abcd", tok.strValue());
ASSERT(tok.isLong());
tok.str("\"ab\"");
tok.concatStr("L\"\"");
ASSERT_EQUALS("ab", tok.strValue());
ASSERT(tok.isLong());
tok.str("\"ab\"");
tok.concatStr("u8\"cd\"");
ASSERT_EQUALS("abcd", tok.strValue());
ASSERT(tok.isUtf8());
}
void deleteLast() const {
TokensFrontBack listEnds{ nullptr };
Token ** const tokensBack = &(listEnds.back);
Token tok(&listEnds);
tok.insertToken("aba");
ASSERT_EQUALS(true, *tokensBack == tok.next());
tok.deleteNext();
ASSERT_EQUALS(true, *tokensBack == &tok);
}
void deleteFirst() const {
TokensFrontBack listEnds{ nullptr };
Token ** const tokensFront = &(listEnds.front);
Token tok(&listEnds);
tok.insertToken("aba");
ASSERT_EQUALS(true, *tokensFront == tok.previous());
tok.deletePrevious();
ASSERT_EQUALS(true, *tokensFront == &tok);
}
void nextArgument() const {
givenACodeSampleToTokenize example1("foo(1, 2, 3, 4);");
ASSERT_EQUALS(true, Token::simpleMatch(example1.tokens()->tokAt(2)->nextArgument(), "2 , 3"));
ASSERT_EQUALS(true, Token::simpleMatch(example1.tokens()->tokAt(4)->nextArgument(), "3 , 4"));
givenACodeSampleToTokenize example2("foo();");
ASSERT_EQUALS(true, example2.tokens()->tokAt(2)->nextArgument() == nullptr);
givenACodeSampleToTokenize example3("foo(bar(a, b), 2, 3);");
ASSERT_EQUALS(true, Token::simpleMatch(example3.tokens()->tokAt(2)->nextArgument(), "2 , 3"));
givenACodeSampleToTokenize example4("foo(x.i[1], \"\", 3);");
ASSERT_EQUALS(true, Token::simpleMatch(example4.tokens()->tokAt(2)->nextArgument(), "\"\" , 3"));
}
void eraseTokens() const {
givenACodeSampleToTokenize code("begin ; { this code will be removed } end", true);
Token::eraseTokens(code.tokens()->next(), code.tokens()->tokAt(9));
ASSERT_EQUALS("begin ; end", code.tokens()->stringifyList(nullptr, false));
}
void matchAny() const {
givenACodeSampleToTokenize varBitOrVar("abc|def", true);
ASSERT_EQUALS(true, Token::Match(varBitOrVar.tokens(), "%name% %or% %name%"));
givenACodeSampleToTokenize varLogOrVar("abc||def", true);
ASSERT_EQUALS(true, Token::Match(varLogOrVar.tokens(), "%name% %oror% %name%"));
}
void matchSingleChar() const {
givenACodeSampleToTokenize singleChar("a", true);
ASSERT_EQUALS(true, Token::Match(singleChar.tokens(), "[a|bc]"));
ASSERT_EQUALS(false, Token::Match(singleChar.tokens(), "[d|ef]"));
Token multiChar;
multiChar.str("[ab");
ASSERT_EQUALS(false, Token::Match(&multiChar, "[ab|def]"));
}
void matchNothingOrAnyNotElse() const {
givenACodeSampleToTokenize empty_String("", true);
ASSERT_EQUALS(true, Token::Match(empty_String.tokens(), "!!else"));
ASSERT_EQUALS(false, Token::Match(empty_String.tokens(), "!!else something"));
givenACodeSampleToTokenize ifSemicolon("if ;", true);
ASSERT_EQUALS(true, Token::Match(ifSemicolon.tokens(), "if ; !!else"));
givenACodeSampleToTokenize ifSemicolonSomething("if ; something", true);
ASSERT_EQUALS(true, Token::Match(ifSemicolonSomething.tokens(), "if ; !!else"));
givenACodeSampleToTokenize justElse("else", true);
ASSERT_EQUALS(false, Token::Match(justElse.tokens(), "!!else"));
givenACodeSampleToTokenize ifSemicolonElse("if ; else", true);
ASSERT_EQUALS(false, Token::Match(ifSemicolonElse.tokens(), "if ; !!else"));
}
void matchType() const {
givenACodeSampleToTokenize type("abc", true);
ASSERT_EQUALS(true, Token::Match(type.tokens(), "%type%"));
givenACodeSampleToTokenize isVar("int a = 3 ;");
ASSERT_EQUALS(true, Token::Match(isVar.tokens(), "%type%"));
ASSERT_EQUALS(true, Token::Match(isVar.tokens(), "%type% %name%"));
ASSERT_EQUALS(false, Token::Match(isVar.tokens(), "%type% %type%"));
givenACodeSampleToTokenize noType1_cpp("delete", true, true);
ASSERT_EQUALS(false, Token::Match(noType1_cpp.tokens(), "%type%"));
givenACodeSampleToTokenize noType1_c("delete", true, false);
ASSERT_EQUALS(true, Token::Match(noType1_c.tokens(), "%type%"));
givenACodeSampleToTokenize noType2("void delete", true);
ASSERT_EQUALS(false, Token::Match(noType2.tokens(), "!!foo %type%"));
}
void matchChar() const {
givenACodeSampleToTokenize chr1("'a'", true);
ASSERT_EQUALS(true, Token::Match(chr1.tokens(), "%char%"));
givenACodeSampleToTokenize chr2("'1'", true);
ASSERT_EQUALS(true, Token::Match(chr2.tokens(), "%char%"));
givenACodeSampleToTokenize noChr("\"10\"", true);
ASSERT_EQUALS(false, Token::Match(noChr.tokens(), "%char%"));
}
void matchCompOp() const {
givenACodeSampleToTokenize comp1("<=", true);
ASSERT_EQUALS(true, Token::Match(comp1.tokens(), "%comp%"));
givenACodeSampleToTokenize comp2(">", true);
ASSERT_EQUALS(true, Token::Match(comp2.tokens(), "%comp%"));
givenACodeSampleToTokenize noComp("=", true);
ASSERT_EQUALS(false, Token::Match(noComp.tokens(), "%comp%"));
}
void matchStr() const {
givenACodeSampleToTokenize noStr1("abc", true);
ASSERT_EQUALS(false, Token::Match(noStr1.tokens(), "%str%"));
givenACodeSampleToTokenize noStr2("'a'", true);
ASSERT_EQUALS(false, Token::Match(noStr2.tokens(), "%str%"));
givenACodeSampleToTokenize str("\"abc\"", true);
ASSERT_EQUALS(true, Token::Match(str.tokens(), "%str%"));
// Empty string
givenACodeSampleToTokenize emptyStr("\"\"", true);
ASSERT_EQUALS(true, Token::Match(emptyStr.tokens(), "%str%"));
}
void matchVarid() const {
givenACodeSampleToTokenize var("int a ; int b ;");
// Varid == 0 should throw exception
ASSERT_THROW((void)Token::Match(var.tokens(), "%type% %varid% ; %type% %name%", 0),InternalError);
ASSERT_EQUALS(true, Token::Match(var.tokens(), "%type% %varid% ; %type% %name%", 1));
ASSERT_EQUALS(true, Token::Match(var.tokens(), "%type% %name% ; %type% %varid%", 2));
// Try to match two different varids in one match call
ASSERT_EQUALS(false, Token::Match(var.tokens(), "%type% %varid% ; %type% %varid%", 2));
// %var% matches with every varid other than 0
ASSERT_EQUALS(true, Token::Match(var.tokens(), "%type% %var% ;"));
ASSERT_EQUALS(false, Token::Match(var.tokens(), "%var% %var% ;"));
}
void matchNumeric() const {
givenACodeSampleToTokenize nonNumeric("abc", true);
ASSERT_EQUALS(false, Token::Match(nonNumeric.tokens(), "%num%"));
givenACodeSampleToTokenize binary("101010b", true);
ASSERT_EQUALS(true, Token::Match(binary.tokens(), "%num%"));
givenACodeSampleToTokenize octal("0123", true);
ASSERT_EQUALS(true, Token::Match(octal.tokens(), "%num%"));
givenACodeSampleToTokenize decimal("4567", true);
ASSERT_EQUALS(true, Token::Match(decimal.tokens(), "%num%"));
givenACodeSampleToTokenize hexadecimal("0xDEADBEEF", true);
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize floatingPoint("0.0f", true);
ASSERT_EQUALS(true, Token::Match(floatingPoint.tokens(), "%num%"));
givenACodeSampleToTokenize doublePrecision("0.0d", true);
ASSERT_EQUALS(true, Token::Match(doublePrecision.tokens(), "%num%"));
givenACodeSampleToTokenize signedLong("0L", true);
ASSERT_EQUALS(true, Token::Match(signedLong.tokens(), "%num%"));
givenACodeSampleToTokenize negativeSignedLong("-0L", true);
ASSERT_EQUALS(true, Token::Match(negativeSignedLong.tokens(), "- %num%"));
givenACodeSampleToTokenize positiveSignedLong("+0L", true);
ASSERT_EQUALS(true, Token::Match(positiveSignedLong.tokens(), "+ %num%"));
givenACodeSampleToTokenize unsignedInt("0U", true);
ASSERT_EQUALS(true, Token::Match(unsignedInt.tokens(), "%num%"));
givenACodeSampleToTokenize unsignedLong("0UL", true);
ASSERT_EQUALS(true, Token::Match(unsignedLong.tokens(), "%num%"));
givenACodeSampleToTokenize unsignedLongLong("0ULL", true);
ASSERT_EQUALS(true, Token::Match(unsignedLongLong.tokens(), "%num%"));
givenACodeSampleToTokenize positive("+666", true);
ASSERT_EQUALS(true, Token::Match(positive.tokens(), "+ %num%"));
givenACodeSampleToTokenize negative("-42", true);
ASSERT_EQUALS(true, Token::Match(negative.tokens(), "- %num%"));
givenACodeSampleToTokenize negativeNull("-.0", true);
ASSERT_EQUALS(true, Token::Match(negativeNull.tokens(), "- %num%"));
givenACodeSampleToTokenize positiveNull("+.0", true);
ASSERT_EQUALS(true, Token::Match(positiveNull.tokens(), "+ %num%"));
}
void matchBoolean() const {
givenACodeSampleToTokenize yes("YES", true);
ASSERT_EQUALS(false, Token::Match(yes.tokens(), "%bool%"));
givenACodeSampleToTokenize positive("true", true);
ASSERT_EQUALS(true, Token::Match(positive.tokens(), "%bool%"));
givenACodeSampleToTokenize negative("false", true);
ASSERT_EQUALS(true, Token::Match(negative.tokens(), "%bool%"));
}
void matchOr() const {
givenACodeSampleToTokenize bitwiseOr(";|;", true);
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(true, Token::Match(bitwiseOr.tokens(), "; %or%"));
ASSERT_EQUALS(true, Token::Match(bitwiseOr.tokens(), "; %op%"));
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(false, Token::Match(bitwiseOr.tokens(), "; %oror%"));
givenACodeSampleToTokenize bitwiseOrAssignment(";|=;");
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(false, Token::Match(bitwiseOrAssignment.tokens(), "; %or%"));
ASSERT_EQUALS(true, Token::Match(bitwiseOrAssignment.tokens(), "; %op%"));
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(false, Token::Match(bitwiseOrAssignment.tokens(), "; %oror%"));
givenACodeSampleToTokenize logicalOr(";||;", true);
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(false, Token::Match(logicalOr.tokens(), "; %or%"));
ASSERT_EQUALS(true, Token::Match(logicalOr.tokens(), "; %op%"));
// cppcheck-suppress simplePatternError - this is intentional
ASSERT_EQUALS(true, Token::Match(logicalOr.tokens(), "; %oror%"));
ASSERT_EQUALS(true, Token::Match(logicalOr.tokens(), "; &&|%oror%"));
ASSERT_EQUALS(true, Token::Match(logicalOr.tokens(), "; %oror%|&&"));
givenACodeSampleToTokenize logicalAnd(";&&;", true);
ASSERT_EQUALS(true, Token::simpleMatch(logicalAnd.tokens(), "; &&"));
ASSERT_EQUALS(true, Token::Match(logicalAnd.tokens(), "; &&|%oror%"));
ASSERT_EQUALS(true, Token::Match(logicalAnd.tokens(), "; %oror%|&&"));
}
static void append_vector(std::vector<std::string> &dest, const std::vector<std::string> &src) {
dest.insert(dest.end(), src.begin(), src.end());
}
void matchOp() {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, bitOps);
append_vector(test_ops, comparisonOps);
append_vector(test_ops, logicalOps);
append_vector(test_ops, assignmentOps);
std::vector<std::string>::const_iterator test_op, test_ops_end = test_ops.end();
for (test_op = test_ops.begin(); test_op != test_ops_end; ++test_op) {
ASSERT_EQUALS(true, MatchCheck(*test_op, "%op%"));
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, extendedOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
ASSERT_EQUALS_MSG(false, MatchCheck(*other_op, "%op%"), "Failing other operator: " + *other_op);
}
}
void matchConstOp() {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, bitOps);
append_vector(test_ops, comparisonOps);
append_vector(test_ops, logicalOps);
std::vector<std::string>::const_iterator test_op, test_ops_end = test_ops.end();
for (test_op = test_ops.begin(); test_op != test_ops_end; ++test_op) {
ASSERT_EQUALS(true, MatchCheck(*test_op, "%cop%"));
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, extendedOps);
append_vector(other_ops, assignmentOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
ASSERT_EQUALS_MSG(false, MatchCheck(*other_op, "%cop%"), "Failing other operator: " + *other_op);
}
}
void isArithmeticalOp() const {
std::vector<std::string>::const_iterator test_op, test_ops_end = arithmeticalOps.end();
for (test_op = arithmeticalOps.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isArithmeticalOp());
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, bitOps);
append_vector(other_ops, comparisonOps);
append_vector(other_ops, logicalOps);
append_vector(other_ops, extendedOps);
append_vector(other_ops, assignmentOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
Token tok;
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isArithmeticalOp(), "Failing arithmetical operator: " + *other_op);
}
}
void isOp() const {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, bitOps);
append_vector(test_ops, comparisonOps);
append_vector(test_ops, logicalOps);
append_vector(test_ops, assignmentOps);
std::vector<std::string>::const_iterator test_op, test_ops_end = test_ops.end();
for (test_op = test_ops.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isOp());
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, extendedOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
Token tok;
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isOp(), "Failing normal operator: " + *other_op);
}
}
void isConstOp() const {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, bitOps);
append_vector(test_ops, comparisonOps);
append_vector(test_ops, logicalOps);
std::vector<std::string>::const_iterator test_op, test_ops_end = test_ops.end();
for (test_op = test_ops.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isConstOp());
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, extendedOps);
append_vector(other_ops, assignmentOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
Token tok;
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isConstOp(), "Failing normal operator: " + *other_op);
}
}
void isExtendedOp() const {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, bitOps);
append_vector(test_ops, comparisonOps);
append_vector(test_ops, logicalOps);
append_vector(test_ops, extendedOps);
std::vector<std::string>::const_iterator test_op, test_ops_end = test_ops.end();
for (test_op = test_ops.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isExtendedOp());
}
// Negative test against assignment operators
std::vector<std::string>::const_iterator other_op, other_ops_end = assignmentOps.end();
for (other_op = assignmentOps.begin(); other_op != other_ops_end; ++other_op) {
Token tok;
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isExtendedOp(), "Failing assignment operator: " + *other_op);
}
}
void isAssignmentOp() const {
std::vector<std::string>::const_iterator test_op, test_ops_end = assignmentOps.end();
for (test_op = assignmentOps.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isAssignmentOp());
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, arithmeticalOps);
append_vector(other_ops, bitOps);
append_vector(other_ops, comparisonOps);
append_vector(other_ops, logicalOps);
append_vector(other_ops, extendedOps);
std::vector<std::string>::const_iterator other_op, other_ops_end = other_ops.end();
for (other_op = other_ops.begin(); other_op != other_ops_end; ++other_op) {
Token tok;
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isAssignmentOp(), "Failing assignment operator: " + *other_op);
}
}
void operators() const {
std::vector<std::string>::const_iterator test_op;
for (test_op = extendedOps.begin(); test_op != extendedOps.end(); ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(Token::eExtendedOp, tok.tokType());
}
for (test_op = logicalOps.begin(); test_op != logicalOps.end(); ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(Token::eLogicalOp, tok.tokType());
}
for (test_op = bitOps.begin(); test_op != bitOps.end(); ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(Token::eBitOp, tok.tokType());
}
for (test_op = comparisonOps.begin(); test_op != comparisonOps.end(); ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS(Token::eComparisonOp, tok.tokType());
}
Token tok;
tok.str("++");
ASSERT_EQUALS(Token::eIncDecOp, tok.tokType());
tok.str("--");
ASSERT_EQUALS(Token::eIncDecOp, tok.tokType());
}
void literals() const {
Token tok;
tok.str("\"foo\"");
ASSERT(tok.tokType() == Token::eString);
tok.str("\"\"");
ASSERT(tok.tokType() == Token::eString);
tok.str("'f'");
ASSERT(tok.tokType() == Token::eChar);
tok.str("12345");
ASSERT(tok.tokType() == Token::eNumber);
tok.str("-55");
ASSERT(tok.tokType() == Token::eNumber);
tok.str("true");
ASSERT(tok.tokType() == Token::eBoolean);
tok.str("false");
ASSERT(tok.tokType() == Token::eBoolean);
}
void isStandardType() const {
std::vector<std::string> standard_types;
standard_types.emplace_back("bool");
standard_types.emplace_back("char");
standard_types.emplace_back("short");
standard_types.emplace_back("int");
standard_types.emplace_back("long");
standard_types.emplace_back("float");
standard_types.emplace_back("double");
standard_types.emplace_back("size_t");
std::vector<std::string>::const_iterator test_op, test_ops_end = standard_types.end();
for (test_op = standard_types.begin(); test_op != test_ops_end; ++test_op) {
Token tok;
tok.str(*test_op);
ASSERT_EQUALS_MSG(true, tok.isStandardType(), "Failing standard type: " + *test_op);
}
// Negative test
Token tok;
tok.str("string");
ASSERT_EQUALS(false, tok.isStandardType());
// Change back to standard type
tok.str("int");
ASSERT_EQUALS(true, tok.isStandardType());
// token can't be both type and variable
tok.str("abc");
tok.isStandardType(true);
tok.varId(123);
ASSERT_EQUALS(false, tok.isStandardType());
}
void updateProperties() const {
Token tok;
tok.str("foobar");
ASSERT_EQUALS(true, tok.isName());
ASSERT_EQUALS(false, tok.isNumber());
tok.str("123456");
ASSERT_EQUALS(false, tok.isName());
ASSERT_EQUALS(true, tok.isNumber());
}
void isNameGuarantees1() const {
Token tok;
tok.str("Name");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees2() const {
Token tok;
tok.str("_name");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees3() const {
Token tok;
tok.str("_123");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees4() const {
Token tok;
tok.str("123456");
ASSERT_EQUALS(false, tok.isName());
ASSERT_EQUALS(true, tok.isNumber());
}
void isNameGuarantees5() const {
Token tok;
tok.str("a123456");
ASSERT_EQUALS(true, tok.isName());
ASSERT_EQUALS(false, tok.isNumber());
}
void isNameGuarantees6() const {
Token tok;
tok.str("$f");
ASSERT_EQUALS(true, tok.isName());
}
void canFindMatchingBracketsNeedsOpen() const {
givenACodeSampleToTokenize var("std::deque<std::set<int> > intsets;");
const Token* const t = var.tokens()->findClosingBracket();
ASSERT(t == nullptr);
}
void canFindMatchingBracketsInnerPair() const {
givenACodeSampleToTokenize var("std::deque<std::set<int> > intsets;");
const Token * const t = var.tokens()->tokAt(7)->findClosingBracket();
ASSERT_EQUALS(">", t->str());
ASSERT(var.tokens()->tokAt(9) == t);
}
void canFindMatchingBracketsOuterPair() const {
givenACodeSampleToTokenize var("std::deque<std::set<int> > intsets;");
const Token* const t = var.tokens()->tokAt(3)->findClosingBracket();
ASSERT_EQUALS(">", t->str());
ASSERT(var.tokens()->tokAt(10) == t);
}
void canFindMatchingBracketsWithTooManyClosing() const {
givenACodeSampleToTokenize var("X< 1>2 > x1;");
const Token* const t = var.tokens()->next()->findClosingBracket();
ASSERT_EQUALS(">", t->str());
ASSERT(var.tokens()->tokAt(3) == t);
}
void canFindMatchingBracketsWithTooManyOpening() const {
givenACodeSampleToTokenize var("X < (2 < 1) > x1;");
const Token* t = var.tokens()->next()->findClosingBracket();
ASSERT(t != nullptr && t->str() == ">");
t = var.tokens()->tokAt(4)->findClosingBracket();
ASSERT(t == nullptr);
}
void findClosingBracket() {
givenACodeSampleToTokenize var("template<typename X, typename...Y> struct S : public Fred<Wilma<Y...>> {}");
const Token* const t = var.tokens()->next()->findClosingBracket();
ASSERT(Token::simpleMatch(t, "> struct"));
}
void expressionString() {
givenACodeSampleToTokenize var1("void f() { *((unsigned long long *)x) = 0; }");
const Token *const tok1 = Token::findsimplematch(var1.tokens(), "*");
ASSERT_EQUALS("*((unsigned long long*)x)", tok1->expressionString());
givenACodeSampleToTokenize var2("typedef unsigned long long u64; void f() { *((u64 *)x) = 0; }");
const Token *const tok2 = Token::findsimplematch(var2.tokens(), "*");
ASSERT_EQUALS("*((unsigned long long*)x)", tok2->expressionString());
givenACodeSampleToTokenize data3("void f() { return (t){1,2}; }");
ASSERT_EQUALS("return(t){1,2}", data3.tokens()->tokAt(5)->expressionString());
givenACodeSampleToTokenize data4("void f() { return L\"a\"; }");
ASSERT_EQUALS("returnL\"a\"", data4.tokens()->tokAt(5)->expressionString());
givenACodeSampleToTokenize data5("void f() { return U\"a\"; }");
ASSERT_EQUALS("returnU\"a\"", data5.tokens()->tokAt(5)->expressionString());
givenACodeSampleToTokenize data6("x = \"\\0\\x1\\x2\\x3\\x4\\x5\\x6\\x7\";");
ASSERT_EQUALS("x=\"\\x00\\x01\\x02\\x03\\x04\\x05\\x06\\x07\"", data6.tokens()->next()->expressionString());
}
void hasKnownIntValue() {
// pointer might be NULL
ValueFlow::Value v1(0);
// pointer points at buffer that is 2 bytes
ValueFlow::Value v2(2);
v2.valueType = ValueFlow::Value::ValueType::BUFFER_SIZE;
v2.setKnown();
Token token;
ASSERT_EQUALS(true, token.addValue(v1));
ASSERT_EQUALS(true, token.addValue(v2));
ASSERT_EQUALS(false, token.hasKnownIntValue());
}
};
REGISTER_TEST(TestToken)
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