cppcheck/test/testtoken.cpp

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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2011 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/>.
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*/
#include "testsuite.h"
#include "testutils.h"
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#include "token.h"
#include "settings.h"
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#include <cstring>
#include <vector>
#include <string>
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extern std::ostringstream errout;
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class TestToken : public TestFixture {
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public:
TestToken() : TestFixture("TestToken")
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{ }
private:
std::vector<std::string> arithmeticalOps;
std::vector<std::string> normalOps;
std::vector<std::string> extendedOps;
std::vector<std::string> assignmentOps;
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void run() {
initOps();
TEST_CASE(nextprevious);
TEST_CASE(multiCompare);
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TEST_CASE(multiCompare2); // #3294 - false negative multi compare between "=" and "=="
TEST_CASE(multiCompare3); // false positive for %or% on code using "|="
TEST_CASE(getStrLength);
TEST_CASE(strValue);
TEST_CASE(deleteLast);
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TEST_CASE(nextArgument);
TEST_CASE(matchAny);
TEST_CASE(matchSingleChar);
TEST_CASE(matchNothingOrAnyNotElse);
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TEST_CASE(matchType);
TEST_CASE(matchStr);
TEST_CASE(matchVarid);
TEST_CASE(matchNumeric);
TEST_CASE(matchBoolean);
TEST_CASE(matchOr);
TEST_CASE(matchOp);
TEST_CASE(isArithmeticalOp);
TEST_CASE(isOp);
TEST_CASE(isExtendedOp);
TEST_CASE(isAssignmentOp);
TEST_CASE(isStandardType);
TEST_CASE(updateProperties)
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TEST_CASE(updatePropertiesConcatStr)
TEST_CASE(isNameGuarantees1)
TEST_CASE(isNameGuarantees2)
TEST_CASE(isNameGuarantees3)
TEST_CASE(isNameGuarantees4)
TEST_CASE(isNameGuarantees5)
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}
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void nextprevious() {
Token *token = new Token(0);
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");
ASSERT_EQUALS(token->tokAt(2)->str(), "3");
if (last->next())
ASSERT_EQUALS("Null was expected", "");
ASSERT_EQUALS(last->str(), "3");
ASSERT_EQUALS(last->previous()->str(), "2");
ASSERT_EQUALS(last->tokAt(-2)->str(), "1");
if (token->previous())
ASSERT_EQUALS("Null was expected", "");
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Tokenizer::deleteTokens(token);
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}
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void multiCompare() {
// Test for found
ASSERT_EQUALS(1, Token::multiCompare("one|two", "one"));
ASSERT_EQUALS(1, Token::multiCompare("one|two", "two"));
ASSERT_EQUALS(1, Token::multiCompare("verybig|two|", "two"));
// Test for empty string found
ASSERT_EQUALS(0, Token::multiCompare("|one|two", "notfound"));
ASSERT_EQUALS(0, Token::multiCompare("one||two", "notfound"));
ASSERT_EQUALS(0, Token::multiCompare("one|two|", "notfound"));
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// Test for not found
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("one|two", "notfound")));
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("verybig|two", "s")));
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("one|two", "ne")));
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "a")));
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "abcd")));
ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "default")));
// %op%
ASSERT_EQUALS(1, Token::multiCompare("one|%op%", "+"));
ASSERT_EQUALS(1, Token::multiCompare("%op%|two", "+"));
ASSERT_EQUALS(-1, Token::multiCompare("one|%op%", "x"));
ASSERT_EQUALS(-1, Token::multiCompare("%op%|two", "x"));
}
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void multiCompare2() { // #3294
// Original pattern that failed: [[,(=<>+-*|&^] %num% [+-*/] %num% ]|,|)|;|=|%op%
givenACodeSampleToTokenize toks("a == 1");
ASSERT_EQUALS(true, Token::Match(toks.tokens(), "a =|%op%"));
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}
void multiCompare3() {
// Original pattern that failed: "return|(|&&|%oror% %var% &&|%oror%|==|!=|<=|>=|<|>|-|%or% %var% )|&&|%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 ;");
ASSERT_EQUALS(false, Token::Match(toks.tokens(), "return %var% xyz|%or% %var% ;"));
ASSERT_EQUALS(false, Token::Match(toks.tokens(), "return %var% %or%|xyz %var% ;"));
givenACodeSampleToTokenize toks2("return a | b ;");
ASSERT_EQUALS(true, Token::Match(toks2.tokens(), "return %var% xyz|%or% %var% ;"));
ASSERT_EQUALS(true, Token::Match(toks2.tokens(), "return %var% %or%|xyz %var% ;"));
givenACodeSampleToTokenize toks3("return a || b ;");
ASSERT_EQUALS(false, Token::Match(toks3.tokens(), "return %var% xyz|%or% %var% ;"));
ASSERT_EQUALS(false, Token::Match(toks3.tokens(), "return %var% %or%|xyz %var% ;"));
ASSERT_EQUALS(true, Token::Match(toks3.tokens(), "return %var% xyz|%oror% %var% ;"));
ASSERT_EQUALS(true, Token::Match(toks3.tokens(), "return %var% %oror%|xyz %var% ;"));
}
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void getStrLength() {
Token tok(0);
tok.str("\"\"");
ASSERT_EQUALS(0, (int)Token::getStrLength(&tok));
tok.str("\"test\"");
ASSERT_EQUALS(4, (int)Token::getStrLength(&tok));
tok.str("\"test \\\\test\"");
ASSERT_EQUALS(10, (int)Token::getStrLength(&tok));
tok.str("\"a\\0\"");
ASSERT_EQUALS(1, (int)Token::getStrLength(&tok));
}
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void strValue() {
Token tok(0);
tok.str("\"\"");
ASSERT_EQUALS(std::string(""), tok.strValue());
tok.str("\"0\"");
ASSERT_EQUALS(std::string("0"), tok.strValue());
}
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void deleteLast() {
Token *tokensBack = 0;
Token tok(&tokensBack);
tok.insertToken("aba");
ASSERT_EQUALS(true, tokensBack == tok.next());
tok.deleteNext();
ASSERT_EQUALS(true, tokensBack == &tok);
}
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void nextArgument() {
givenACodeSampleToTokenize example1("foo(1, 2, 3, 4);");
ASSERT_EQUALS(true, Token::simpleMatch(example1.tokens()->tokAt(2)->nextArgument(), "2 , 3"));
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givenACodeSampleToTokenize example2("foo();");
ASSERT_EQUALS(true, example2.tokens()->tokAt(2)->nextArgument() == 0);
givenACodeSampleToTokenize example3("foo(bar(a, b), 2, 3);");
ASSERT_EQUALS(true, Token::simpleMatch(example3.tokens()->tokAt(2)->nextArgument(), "2 , 3"));
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}
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void matchAny() {
givenACodeSampleToTokenize varBitOrVar("abc|def");
ASSERT_EQUALS(true, Token::Match(varBitOrVar.tokens(), "%var% | %var%"));
givenACodeSampleToTokenize varLogOrVar("abc||def");
ASSERT_EQUALS(true, Token::Match(varLogOrVar.tokens(), "%var% || %var%"));
}
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void matchSingleChar() {
givenACodeSampleToTokenize singleChar("a");
ASSERT_EQUALS(true, Token::Match(singleChar.tokens(), "[a|bc]"));
ASSERT_EQUALS(false, Token::Match(singleChar.tokens(), "[d|ef]"));
Token multiChar(0);
multiChar.str("[ab");
ASSERT_EQUALS(false, Token::Match(&multiChar, "[ab|def]"));
}
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void matchNothingOrAnyNotElse() {
givenACodeSampleToTokenize emptyString("");
ASSERT_EQUALS(true, Token::Match(emptyString.tokens(), "!!else"));
ASSERT_EQUALS(false, Token::Match(emptyString.tokens(), "!!else something"));
givenACodeSampleToTokenize ifSemicolon("if ;");
ASSERT_EQUALS(true, Token::Match(ifSemicolon.tokens(), "!!return if"));
ASSERT_EQUALS(true, Token::Match(ifSemicolon.tokens(), "if ; !!else"));
givenACodeSampleToTokenize ifSemicolonSomething("if ; something");
ASSERT_EQUALS(true, Token::Match(ifSemicolonSomething.tokens(), "if ; !!else"));
givenACodeSampleToTokenize justElse("else");
ASSERT_EQUALS(false, Token::Match(justElse.tokens(), "!!else"));
givenACodeSampleToTokenize ifSemicolonElse("if ; else");
ASSERT_EQUALS(false, Token::Match(ifSemicolonElse.tokens(), "if ; !!else"));
}
void matchType() {
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givenACodeSampleToTokenize type("abc");
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% %var%"));
ASSERT_EQUALS(false, Token::Match(isVar.tokens(), "%type% %type%"));
givenACodeSampleToTokenize noType("delete");
ASSERT_EQUALS(false, Token::Match(noType.tokens(), "%type%"));
}
void matchStr() {
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givenACodeSampleToTokenize noStr1("abc");
ASSERT_EQUALS(false, Token::Match(noStr1.tokens(), "%str%"));
givenACodeSampleToTokenize noStr2("'a'");
ASSERT_EQUALS(false, Token::Match(noStr2.tokens(), "%str%"));
givenACodeSampleToTokenize str("\"abc\"");
ASSERT_EQUALS(true, Token::Match(str.tokens(), "%str%"));
// Empty string
givenACodeSampleToTokenize emptyStr("\"\"");
ASSERT_EQUALS(true, Token::Match(emptyStr.tokens(), "%str%"));
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}
void matchVarid() {
givenACodeSampleToTokenize var("int a ; int b ;");
ASSERT_EQUALS(false, Token::Match(var.tokens(), "%type% %varid% ; %type% %var%", 0));
ASSERT_EQUALS(true, Token::Match(var.tokens(), "%type% %varid% ; %type% %var%", 1));
ASSERT_EQUALS(true, Token::Match(var.tokens(), "%type% %var% ; %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));
}
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void matchNumeric() {
givenACodeSampleToTokenize nonNumeric("abc");
ASSERT_EQUALS(false, Token::Match(nonNumeric.tokens(), "%num%"));
givenACodeSampleToTokenize binary("101010b");
ASSERT_EQUALS(true, Token::Match(binary.tokens(), "%num%"));
givenACodeSampleToTokenize octal("0123");
ASSERT_EQUALS(true, Token::Match(octal.tokens(), "%num%"));
givenACodeSampleToTokenize decimal("4567");
ASSERT_EQUALS(true, Token::Match(decimal.tokens(), "%num%"));
givenACodeSampleToTokenize hexadecimal("0xDEADBEEF");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize floatingPoint("0.0f");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize doublePrecision("0.0d");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize unsignedInt("0U");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize unsignedLong("0UL");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize unsignedLongLong("0ULL");
ASSERT_EQUALS(true, Token::Match(hexadecimal.tokens(), "%num%"));
givenACodeSampleToTokenize positive("+666");
ASSERT_EQUALS(true, Token::Match(positive.tokens(), "+ %num%"));
givenACodeSampleToTokenize negative("-42");
ASSERT_EQUALS(true, Token::Match(negative.tokens(), "- %num%"));
}
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void matchBoolean() {
givenACodeSampleToTokenize yes("YES");
ASSERT_EQUALS(false, Token::Match(yes.tokens(), "%bool%"));
givenACodeSampleToTokenize positive("true");
ASSERT_EQUALS(true, Token::Match(positive.tokens(), "%bool%"));
givenACodeSampleToTokenize negative("false");
ASSERT_EQUALS(true, Token::Match(negative.tokens(), "%bool%"));
}
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void matchOr() {
givenACodeSampleToTokenize bitwiseOr("|");
ASSERT_EQUALS(true, Token::Match(bitwiseOr.tokens(), "%or%"));
ASSERT_EQUALS(true, Token::Match(bitwiseOr.tokens(), "%op%"));
ASSERT_EQUALS(false, Token::Match(bitwiseOr.tokens(), "%oror%"));
givenACodeSampleToTokenize bitwiseOrAssignment("|=");
ASSERT_EQUALS(false, Token::Match(bitwiseOrAssignment.tokens(), "%or%"));
ASSERT_EQUALS(false, Token::Match(bitwiseOrAssignment.tokens(), "%op%"));
ASSERT_EQUALS(false, Token::Match(bitwiseOrAssignment.tokens(), "%oror%"));
givenACodeSampleToTokenize logicalOr("||");
ASSERT_EQUALS(false, Token::Match(logicalOr.tokens(), "%or%"));
ASSERT_EQUALS(true, Token::Match(logicalOr.tokens(), "%op%"));
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("&&");
ASSERT_EQUALS(true, Token::simpleMatch(logicalAnd.tokens(), "&&"));
ASSERT_EQUALS(true, Token::Match(logicalAnd.tokens(), "&&|%oror%"));
ASSERT_EQUALS(true, Token::Match(logicalAnd.tokens(), "%oror%|&&"));
}
void append_vector(std::vector<std::string> &dest, const std::vector<std::string> &src) {
dest.insert(dest.end(), src.begin(), src.end());
}
void initOps() {
arithmeticalOps.push_back("+");
arithmeticalOps.push_back("-");
arithmeticalOps.push_back("*");
arithmeticalOps.push_back("/");
arithmeticalOps.push_back("%");
arithmeticalOps.push_back("<<");
arithmeticalOps.push_back(">>");
normalOps.push_back("&&");
normalOps.push_back("||");
normalOps.push_back("==");
normalOps.push_back("!=");
normalOps.push_back("<");
normalOps.push_back("<=");
normalOps.push_back(">");
normalOps.push_back(">=");
normalOps.push_back("&");
normalOps.push_back("|");
normalOps.push_back("^");
normalOps.push_back("~");
normalOps.push_back("!");
extendedOps.push_back(",");
extendedOps.push_back("[");
extendedOps.push_back("]");
extendedOps.push_back("(");
extendedOps.push_back(")");
extendedOps.push_back("?");
extendedOps.push_back(":");
assignmentOps.push_back("=");
assignmentOps.push_back("+=");
assignmentOps.push_back("-=");
assignmentOps.push_back("*=");
assignmentOps.push_back("/=");
assignmentOps.push_back("%=");
assignmentOps.push_back("&=");
assignmentOps.push_back("^=");
assignmentOps.push_back("|=");
assignmentOps.push_back("<<=");
assignmentOps.push_back(">>=");
}
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void matchOp() {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, normalOps);
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, Token::Match(givenACodeSampleToTokenize(*test_op).tokens(), "%op%"));
}
// 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, Token::Match(givenACodeSampleToTokenize(*other_op).tokens(), "%op%"), "Failing other operator: " + *other_op);
}
}
void isArithmeticalOp() {
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(NULL);
tok.str(*test_op);
ASSERT_EQUALS(true, tok.isArithmeticalOp());
}
// Negative test against other operators
std::vector<std::string> other_ops;
append_vector(other_ops, normalOps);
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(NULL);
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isArithmeticalOp(), "Failing arithmetical operator: " + *other_op);
}
}
void isOp() {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, normalOps);
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(NULL);
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);
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(NULL);
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isOp(), "Failing normal operator: " + *other_op);
}
}
void isExtendedOp() {
std::vector<std::string> test_ops;
append_vector(test_ops, arithmeticalOps);
append_vector(test_ops, normalOps);
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(NULL);
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(NULL);
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isExtendedOp(), "Failing assignment operator: " + *other_op);
}
}
void isAssignmentOp() {
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(NULL);
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, normalOps);
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(NULL);
tok.str(*other_op);
ASSERT_EQUALS_MSG(false, tok.isAssignmentOp(), "Failing assignment operator: " + *other_op);
}
}
void isStandardType() {
std::vector<std::string> standard_types;
standard_types.push_back("bool");
standard_types.push_back("char");
standard_types.push_back("short");
standard_types.push_back("int");
standard_types.push_back("long");
standard_types.push_back("float");
standard_types.push_back("double");
standard_types.push_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(NULL);
tok.str(*test_op);
ASSERT_EQUALS_MSG(true, tok.isStandardType(), "Failing standard type: " + *test_op);
}
// Negative test
Token tok(0);
tok.str("string");
ASSERT_EQUALS(false, tok.isStandardType());
}
void updateProperties() {
Token tok(NULL);
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());
}
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void updatePropertiesConcatStr() {
Token tok(NULL);
tok.str("true");
ASSERT_EQUALS(true, tok.isBoolean());
tok.concatStr("123");
ASSERT_EQUALS(false, tok.isBoolean());
ASSERT_EQUALS("tru23", tok.str());
}
void isNameGuarantees1() {
Token tok(NULL);
tok.str("Name");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees2() {
Token tok(NULL);
tok.str("_name");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees3() {
Token tok(NULL);
tok.str("_123");
ASSERT_EQUALS(true, tok.isName());
}
void isNameGuarantees4() {
Token tok(NULL);
tok.str("123456");
ASSERT_EQUALS(false, tok.isName());
ASSERT_EQUALS(true, tok.isNumber());
}
void isNameGuarantees5() {
Token tok(NULL);
tok.str("a123456");
ASSERT_EQUALS(true, tok.isName());
ASSERT_EQUALS(false, tok.isNumber());
}
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};
REGISTER_TEST(TestToken)