1196 lines
38 KiB
C++
1196 lines
38 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2019 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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//---------------------------------------------------------------------------
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#ifndef tokenH
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#define tokenH
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//---------------------------------------------------------------------------
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#include "config.h"
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#include "mathlib.h"
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#include "valueflow.h"
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#include "templatesimplifier.h"
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#include "utils.h"
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#include <algorithm>
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#include <cstddef>
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#include <functional>
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#include <list>
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#include <ostream>
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#include <string>
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#include <vector>
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class Enumerator;
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class Function;
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class Scope;
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class Settings;
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class Type;
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class ValueType;
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class Variable;
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/**
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* @brief This struct stores pointers to the front and back tokens of the list this token is in.
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*/
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struct TokensFrontBack {
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Token *front;
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Token *back;
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};
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struct TokenImpl {
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nonneg int mVarId;
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nonneg int mFileIndex;
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nonneg int mLineNumber;
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nonneg int mColumn;
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// AST..
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Token *mAstOperand1;
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Token *mAstOperand2;
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Token *mAstParent;
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// symbol database information
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const Scope *mScope;
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union {
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const Function *mFunction;
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const Variable *mVariable;
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const ::Type* mType;
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const Enumerator *mEnumerator;
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};
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/**
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* A value from 0-100 that provides a rough idea about where in the token
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* list this token is located.
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*/
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nonneg int mProgressValue;
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/**
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* Token index. Position in token list
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*/
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nonneg int mIndex;
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// original name like size_t
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std::string* mOriginalName;
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// ValueType
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ValueType *mValueType;
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// ValueFlow
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std::list<ValueFlow::Value>* mValues;
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static const std::list<ValueFlow::Value> mEmptyValueList;
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/** Bitfield bit count. */
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unsigned char mBits;
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// Pointer to a template in the template simplifier
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std::set<TemplateSimplifier::TokenAndName*> mTemplateSimplifierPointers;
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// __cppcheck_in_range__
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struct CppcheckAttributes {
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enum Type {LOW,HIGH} type;
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MathLib::bigint value;
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struct CppcheckAttributes *next;
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};
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struct CppcheckAttributes *mCppcheckAttributes;
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void setCppcheckAttribute(CppcheckAttributes::Type type, MathLib::bigint value);
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bool getCppcheckAttribute(CppcheckAttributes::Type type, MathLib::bigint *value) const;
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TokenImpl()
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: mVarId(0)
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, mFileIndex(0)
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, mLineNumber(0)
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, mColumn(0)
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, mAstOperand1(nullptr)
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, mAstOperand2(nullptr)
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, mAstParent(nullptr)
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, mScope(nullptr)
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, mFunction(nullptr) // Initialize whole union
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, mProgressValue(0)
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, mIndex(0)
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, mOriginalName(nullptr)
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, mValueType(nullptr)
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, mValues(nullptr)
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, mBits(0)
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, mTemplateSimplifierPointers()
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, mCppcheckAttributes(nullptr)
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{}
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~TokenImpl();
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};
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/// @addtogroup Core
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/// @{
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/**
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* @brief The token list that the TokenList generates is a linked-list of this class.
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*
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* Tokens are stored as strings. The "if", "while", etc are stored in plain text.
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* The reason the Token class is needed (instead of using the string class) is that some extra functionality is also needed for tokens:
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* - location of the token is stored (fileIndex, linenr, column)
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* - functions for classifying the token (isName, isNumber, isBoolean, isStandardType)
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*
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* The Token class also has other functions for management of token list, matching tokens, etc.
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*/
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class CPPCHECKLIB Token {
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private:
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TokensFrontBack* mTokensFrontBack;
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// Not implemented..
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Token(const Token &);
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Token operator=(const Token &);
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public:
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enum Type {
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eVariable, eType, eFunction, eKeyword, eName, // Names: Variable (varId), Type (typeId, later), Function (FuncId, later), Language keyword, Name (unknown identifier)
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eNumber, eString, eChar, eBoolean, eLiteral, eEnumerator, // Literals: Number, String, Character, Boolean, User defined literal (C++11), Enumerator
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eArithmeticalOp, eComparisonOp, eAssignmentOp, eLogicalOp, eBitOp, eIncDecOp, eExtendedOp, // Operators: Arithmetical, Comparison, Assignment, Logical, Bitwise, ++/--, Extended
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eBracket, // {, }, <, >: < and > only if link() is set. Otherwise they are comparison operators.
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eLambda, // A function without a name
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eOther,
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eNone
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};
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explicit Token(TokensFrontBack *tokensFrontBack = nullptr);
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~Token();
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template<typename T>
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void str(T&& s) {
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mStr = s;
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mImpl->mVarId = 0;
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update_property_info();
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}
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/**
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* Concatenate two (quoted) strings. Automatically cuts of the last/first character.
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* Example: "hello ""world" -> "hello world". Used by the token simplifier.
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*/
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void concatStr(std::string const& b);
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const std::string &str() const {
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return mStr;
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}
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/**
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* Unlink and delete the next 'count' tokens.
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*/
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void deleteNext(nonneg int count = 1);
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/**
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* Unlink and delete the previous 'count' tokens.
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*/
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void deletePrevious(nonneg int count = 1);
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/**
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* Swap the contents of this token with the next token.
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*/
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void swapWithNext();
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/**
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* @return token in given index, related to this token.
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* For example index 1 would return next token, and 2
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* would return next from that one.
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*/
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const Token *tokAt(int index) const;
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Token *tokAt(int index) {
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return const_cast<Token *>(const_cast<const Token *>(this)->tokAt(index));
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}
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/**
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* @return the link to the token in given index, related to this token.
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* For example index 1 would return the link to next token.
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*/
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const Token *linkAt(int index) const;
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Token *linkAt(int index) {
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return const_cast<Token *>(const_cast<const Token *>(this)->linkAt(index));
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}
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/**
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* @return String of the token in given index, related to this token.
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* If that token does not exist, an empty string is being returned.
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*/
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const std::string &strAt(int index) const;
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/**
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* Match given token (or list of tokens) to a pattern list.
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*
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* Possible patterns
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* "someRandomText" If token contains "someRandomText".
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* @note Use Match() if you want to use flags in patterns
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*
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* The patterns can be also combined to compare to multiple tokens at once
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* by separating tokens with a space, e.g.
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* ") void {" will return true if first token is ')' next token
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* is "void" and token after that is '{'. If even one of the tokens does
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* not match its pattern, false is returned.
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*
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* @param tok List of tokens to be compared to the pattern
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* @param pattern The pattern against which the tokens are compared,
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* e.g. "const" or ") void {".
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* @return true if given token matches with given pattern
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* false if given token does not match with given pattern
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*/
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static bool simpleMatch(const Token *tok, const char pattern[]);
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/**
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* Match given token (or list of tokens) to a pattern list.
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*
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* Possible patterns
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* - "%any%" any token
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* - "%assign%" a assignment operand
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* - "%bool%" true or false
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* - "%char%" Any token enclosed in '-character.
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* - "%comp%" Any token such that isComparisonOp() returns true.
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* - "%cop%" Any token such that isConstOp() returns true.
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* - "%name%" any token which is a name, variable or type e.g. "hello" or "int"
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* - "%num%" Any numeric token, e.g. "23"
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* - "%op%" Any token such that isOp() returns true.
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* - "%or%" A bitwise-or operator '|'
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* - "%oror%" A logical-or operator '||'
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* - "%type%" Anything that can be a variable type, e.g. "int", but not "delete".
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* - "%str%" Any token starting with "-character (C-string).
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* - "%var%" Match with token with varId > 0
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* - "%varid%" Match with parameter varid
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* - "[abc]" Any of the characters 'a' or 'b' or 'c'
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* - "int|void|char" Any of the strings, int, void or char
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* - "int|void|char|" Any of the strings, int, void or char or empty string
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* - "!!else" No tokens or any token that is not "else".
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* - "someRandomText" If token contains "someRandomText".
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*
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* multi-compare patterns such as "int|void|char" can contain %%or%, %%oror% and %%op%
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* it is recommended to put such an %%cmd% as the first pattern.
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* For example: "%var%|%num%|)" means yes to a variable, a number or ')'.
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*
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* The patterns can be also combined to compare to multiple tokens at once
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* by separating tokens with a space, e.g.
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* ") const|void {" will return true if first token is ')' next token is either
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* "const" or "void" and token after that is '{'. If even one of the tokens does not
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* match its pattern, false is returned.
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*
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* @param tok List of tokens to be compared to the pattern
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* @param pattern The pattern against which the tokens are compared,
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* e.g. "const" or ") const|volatile| {".
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* @param varid if %%varid% is given in the pattern the Token::varId
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* will be matched against this argument
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* @return true if given token matches with given pattern
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* false if given token does not match with given pattern
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*/
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static bool Match(const Token *tok, const char pattern[], nonneg int varid = 0);
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/**
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* @return length of C-string.
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*
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* Should be called for %%str%% tokens only.
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*
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* @param tok token with C-string
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**/
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static nonneg int getStrLength(const Token *tok);
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/**
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* @return sizeof of C-string.
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*
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* Should be called for %%str%% tokens only.
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*
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* @param tok token with C-string
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**/
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static nonneg int getStrSize(const Token *tok);
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/**
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* @return char of C-string at index (possible escaped "\\n")
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*
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* Should be called for %%str%% tokens only.
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*
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* @param tok token with C-string
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* @param index position of character
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**/
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static std::string getCharAt(const Token *tok, MathLib::bigint index);
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const ValueType *valueType() const {
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return mImpl->mValueType;
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}
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void setValueType(ValueType *vt);
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const ValueType *argumentType() const {
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const Token *top = this;
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while (top && !Token::Match(top->astParent(), ",|("))
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top = top->astParent();
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return top ? top->mImpl->mValueType : nullptr;
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}
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Token::Type tokType() const {
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return mTokType;
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}
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void tokType(Token::Type t) {
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mTokType = t;
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const bool memoizedIsName = (mTokType == eName || mTokType == eType || mTokType == eVariable ||
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mTokType == eFunction || mTokType == eKeyword || mTokType == eBoolean ||
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mTokType == eEnumerator); // TODO: "true"/"false" aren't really a name...
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setFlag(fIsName, memoizedIsName);
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const bool memoizedIsLiteral = (mTokType == eNumber || mTokType == eString || mTokType == eChar ||
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mTokType == eBoolean || mTokType == eLiteral || mTokType == eEnumerator);
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setFlag(fIsLiteral, memoizedIsLiteral);
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}
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void isKeyword(const bool kwd) {
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if (kwd)
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tokType(eKeyword);
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else if (mTokType == eKeyword)
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tokType(eName);
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}
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bool isKeyword() const {
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return mTokType == eKeyword;
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}
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bool isName() const {
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return getFlag(fIsName);
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}
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bool isUpperCaseName() const;
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bool isLiteral() const {
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return getFlag(fIsLiteral);
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}
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bool isNumber() const {
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return mTokType == eNumber;
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}
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bool isEnumerator() const {
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return mTokType == eEnumerator;
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}
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bool isOp() const {
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return (isConstOp() ||
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isAssignmentOp() ||
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mTokType == eIncDecOp);
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}
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bool isConstOp() const {
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return (isArithmeticalOp() ||
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mTokType == eLogicalOp ||
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mTokType == eComparisonOp ||
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mTokType == eBitOp);
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}
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bool isExtendedOp() const {
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return isConstOp() ||
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mTokType == eExtendedOp;
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}
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bool isArithmeticalOp() const {
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return mTokType == eArithmeticalOp;
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}
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bool isComparisonOp() const {
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return mTokType == eComparisonOp;
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}
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bool isAssignmentOp() const {
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return mTokType == eAssignmentOp;
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}
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bool isBoolean() const {
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return mTokType == eBoolean;
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}
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bool isBinaryOp() const {
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return astOperand1() != nullptr && astOperand2() != nullptr;
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}
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bool isUnaryOp(const std::string &s) const {
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return s == mStr && astOperand1() != nullptr && astOperand2() == nullptr;
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}
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bool isUnaryPreOp() const;
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unsigned int flags() const {
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return mFlags;
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}
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void flags(const unsigned int flags_) {
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mFlags = flags_;
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}
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bool isUnsigned() const {
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return getFlag(fIsUnsigned);
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}
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void isUnsigned(const bool sign) {
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setFlag(fIsUnsigned, sign);
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}
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bool isSigned() const {
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return getFlag(fIsSigned);
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}
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void isSigned(const bool sign) {
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setFlag(fIsSigned, sign);
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}
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bool isPointerCompare() const {
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return getFlag(fIsPointerCompare);
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}
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void isPointerCompare(const bool b) {
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setFlag(fIsPointerCompare, b);
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}
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bool isLong() const {
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return getFlag(fIsLong);
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}
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void isLong(bool size) {
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setFlag(fIsLong, size);
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}
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bool isStandardType() const {
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return getFlag(fIsStandardType);
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}
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void isStandardType(const bool b) {
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setFlag(fIsStandardType, b);
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}
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bool isExpandedMacro() const {
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return getFlag(fIsExpandedMacro);
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}
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void isExpandedMacro(const bool m) {
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setFlag(fIsExpandedMacro, m);
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}
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bool isCast() const {
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return getFlag(fIsCast);
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}
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void isCast(bool c) {
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setFlag(fIsCast, c);
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}
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bool isAttributeConstructor() const {
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return getFlag(fIsAttributeConstructor);
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}
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void isAttributeConstructor(const bool ac) {
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setFlag(fIsAttributeConstructor, ac);
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}
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bool isAttributeDestructor() const {
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return getFlag(fIsAttributeDestructor);
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}
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void isAttributeDestructor(const bool value) {
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setFlag(fIsAttributeDestructor, value);
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}
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bool isAttributeUnused() const {
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return getFlag(fIsAttributeUnused);
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}
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void isAttributeUnused(bool unused) {
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setFlag(fIsAttributeUnused, unused);
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}
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bool isAttributeUsed() const {
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return getFlag(fIsAttributeUsed);
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}
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void isAttributeUsed(const bool unused) {
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setFlag(fIsAttributeUsed, unused);
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}
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bool isAttributePure() const {
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return getFlag(fIsAttributePure);
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}
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void isAttributePure(const bool value) {
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setFlag(fIsAttributePure, value);
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}
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bool isAttributeConst() const {
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return getFlag(fIsAttributeConst);
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}
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void isAttributeConst(bool value) {
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setFlag(fIsAttributeConst, value);
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}
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bool isAttributeNoreturn() const {
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return getFlag(fIsAttributeNoreturn);
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}
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void isAttributeNoreturn(const bool value) {
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setFlag(fIsAttributeNoreturn, value);
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}
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bool isAttributeNothrow() const {
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return getFlag(fIsAttributeNothrow);
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}
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void isAttributeNothrow(const bool value) {
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setFlag(fIsAttributeNothrow, value);
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}
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bool isAttributePacked() const {
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return getFlag(fIsAttributePacked);
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}
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void isAttributePacked(const bool value) {
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setFlag(fIsAttributePacked, value);
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}
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bool isAttributeNodiscard() const {
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return getFlag(fIsAttributeNodiscard);
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}
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void isAttributeNodiscard(const bool value) {
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setFlag(fIsAttributeNodiscard, value);
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}
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void setCppcheckAttribute(TokenImpl::CppcheckAttributes::Type type, MathLib::bigint value) {
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mImpl->setCppcheckAttribute(type, value);
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}
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bool getCppcheckAttribute(TokenImpl::CppcheckAttributes::Type type, MathLib::bigint *value) const {
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return mImpl->getCppcheckAttribute(type, value);
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}
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bool isControlFlowKeyword() const {
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return getFlag(fIsControlFlowKeyword);
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}
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bool isOperatorKeyword() const {
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return getFlag(fIsOperatorKeyword);
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}
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void isOperatorKeyword(const bool value) {
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setFlag(fIsOperatorKeyword, value);
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}
|
|
bool isComplex() const {
|
|
return getFlag(fIsComplex);
|
|
}
|
|
void isComplex(const bool value) {
|
|
setFlag(fIsComplex, value);
|
|
}
|
|
bool isEnumType() const {
|
|
return getFlag(fIsEnumType);
|
|
}
|
|
void isEnumType(const bool value) {
|
|
setFlag(fIsEnumType, value);
|
|
}
|
|
bool isAtAddress() const {
|
|
return getFlag(fAtAddress);
|
|
}
|
|
void isAtAddress(bool b) {
|
|
setFlag(fAtAddress, b);
|
|
}
|
|
|
|
bool isBitfield() const {
|
|
return mImpl->mBits > 0;
|
|
}
|
|
unsigned char bits() const {
|
|
return mImpl->mBits;
|
|
}
|
|
std::set<TemplateSimplifier::TokenAndName*> &templateSimplifierPointers() const {
|
|
return mImpl->mTemplateSimplifierPointers;
|
|
}
|
|
void templateSimplifierPointer(TemplateSimplifier::TokenAndName* tokenAndName) {
|
|
mImpl->mTemplateSimplifierPointers.insert(tokenAndName);
|
|
}
|
|
void setBits(const unsigned char b) {
|
|
mImpl->mBits = b;
|
|
}
|
|
|
|
/**
|
|
* @brief Is current token a template argument?
|
|
*
|
|
* Original code:
|
|
*
|
|
* template<class C> struct S {
|
|
* C x;
|
|
* };
|
|
* S<int> s;
|
|
*
|
|
* Resulting code:
|
|
*
|
|
* struct S<int> {
|
|
* int x ; // <- "int" is a template argument
|
|
* }
|
|
* S<int> s;
|
|
*/
|
|
bool isTemplateArg() const {
|
|
return getFlag(fIsTemplateArg);
|
|
}
|
|
void isTemplateArg(const bool value) {
|
|
setFlag(fIsTemplateArg, value);
|
|
}
|
|
|
|
static const Token *findsimplematch(const Token * const startTok, const char pattern[]);
|
|
static const Token *findsimplematch(const Token * const startTok, const char pattern[], const Token * const end);
|
|
static const Token *findmatch(const Token * const startTok, const char pattern[], const nonneg int varId = 0);
|
|
static const Token *findmatch(const Token * const startTok, const char pattern[], const Token * const end, const nonneg int varId = 0);
|
|
static Token *findsimplematch(Token * const startTok, const char pattern[]) {
|
|
return const_cast<Token *>(findsimplematch(const_cast<const Token *>(startTok), pattern));
|
|
}
|
|
static Token *findsimplematch(Token * const startTok, const char pattern[], const Token * const end) {
|
|
return const_cast<Token *>(findsimplematch(const_cast<const Token *>(startTok), pattern, end));
|
|
}
|
|
static Token *findmatch(Token * const startTok, const char pattern[], const nonneg int varId = 0) {
|
|
return const_cast<Token *>(findmatch(const_cast<const Token *>(startTok), pattern, varId));
|
|
}
|
|
static Token *findmatch(Token * const startTok, const char pattern[], const Token * const end, const nonneg int varId = 0) {
|
|
return const_cast<Token *>(findmatch(const_cast<const Token *>(startTok), pattern, end, varId));
|
|
}
|
|
|
|
/**
|
|
* Needle is build from multiple alternatives. If one of
|
|
* them is equal to haystack, return value is 1. If there
|
|
* are no matches, but one alternative to needle is empty
|
|
* string, return value is 0. If needle was not found, return
|
|
* value is -1.
|
|
*
|
|
* @param tok Current token (needle)
|
|
* @param haystack e.g. "one|two" or "|one|two"
|
|
* @param varid optional varid of token
|
|
* @return 1 if needle is found from the haystack
|
|
* 0 if needle was empty string
|
|
* -1 if needle was not found
|
|
*/
|
|
static int multiCompare(const Token *tok, const char *haystack, nonneg int varid);
|
|
|
|
nonneg int fileIndex() const {
|
|
return mImpl->mFileIndex;
|
|
}
|
|
void fileIndex(nonneg int indexOfFile) {
|
|
mImpl->mFileIndex = indexOfFile;
|
|
}
|
|
|
|
nonneg int linenr() const {
|
|
return mImpl->mLineNumber;
|
|
}
|
|
void linenr(nonneg int lineNumber) {
|
|
mImpl->mLineNumber = lineNumber;
|
|
}
|
|
|
|
nonneg int col() const {
|
|
return mImpl->mColumn;
|
|
}
|
|
void col(nonneg int c) {
|
|
mImpl->mColumn = c;
|
|
}
|
|
|
|
Token *next() const {
|
|
return mNext;
|
|
}
|
|
|
|
|
|
/**
|
|
* Delete tokens between begin and end. E.g. if begin = 1
|
|
* and end = 5, tokens 2,3 and 4 would be erased.
|
|
*
|
|
* @param begin Tokens after this will be erased.
|
|
* @param end Tokens before this will be erased.
|
|
*/
|
|
static void eraseTokens(Token *begin, const Token *end);
|
|
|
|
/**
|
|
* Insert new token after this token. This function will handle
|
|
* relations between next and previous token also.
|
|
* @param tokenStr String for the new token.
|
|
* @param originalNameStr String used for Token::originalName().
|
|
* @param prepend Insert the new token before this token when it's not
|
|
* the first one on the tokens list.
|
|
*/
|
|
void insertToken(const std::string &tokenStr, const std::string &originalNameStr=emptyString, bool prepend=false);
|
|
|
|
Token *previous() const {
|
|
return mPrevious;
|
|
}
|
|
|
|
|
|
nonneg int varId() const {
|
|
return mImpl->mVarId;
|
|
}
|
|
void varId(nonneg int id) {
|
|
mImpl->mVarId = id;
|
|
if (id != 0) {
|
|
tokType(eVariable);
|
|
isStandardType(false);
|
|
} else {
|
|
update_property_info();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* For debugging purposes, prints token and all tokens
|
|
* followed by it.
|
|
* @param title Title for the printout or use default parameter or 0
|
|
* for no title.
|
|
*/
|
|
void printOut(const char *title = nullptr) const;
|
|
|
|
/**
|
|
* For debugging purposes, prints token and all tokens
|
|
* followed by it.
|
|
* @param title Title for the printout or use default parameter or 0
|
|
* for no title.
|
|
* @param fileNames Prints out file name instead of file index.
|
|
* File index should match the index of the string in this vector.
|
|
*/
|
|
void printOut(const char *title, const std::vector<std::string> &fileNames) const;
|
|
|
|
/**
|
|
* Replace token replaceThis with tokens between start and end,
|
|
* including start and end. The replaceThis token is deleted.
|
|
* @param replaceThis This token will be deleted.
|
|
* @param start This will be in the place of replaceThis
|
|
* @param end This is also in the place of replaceThis
|
|
*/
|
|
static void replace(Token *replaceThis, Token *start, Token *end);
|
|
|
|
/**
|
|
* Stringify a token
|
|
* @param os The result is shifted into that output stream
|
|
* @param varid Print varids. (Style: "varname@id")
|
|
* @param attributes Print attributes of tokens like "unsigned" in front of it.
|
|
* @param macro Prints $ in front of the token if it was expanded from a macro.
|
|
*/
|
|
void stringify(std::ostream& os, bool varid, bool attributes, bool macro) const;
|
|
|
|
/**
|
|
* Stringify a list of token, from current instance on.
|
|
* @param varid Print varids. (Style: "varname@id")
|
|
* @param attributes Print attributes of tokens like "unsigned" in front of it.
|
|
* @param linenumbers Print line number in front of each line
|
|
* @param linebreaks Insert "\\n" into string when line number changes
|
|
* @param files print Files as numbers or as names (if fileNames is given)
|
|
* @param fileNames Vector of filenames. Used (if given) to print filenames as strings instead of numbers.
|
|
* @param end Stringification ends before this token is reached. 0 to stringify until end of list.
|
|
* @return Stringified token list as a string
|
|
*/
|
|
std::string stringifyList(bool varid, bool attributes, bool linenumbers, bool linebreaks, bool files, const std::vector<std::string>* fileNames = nullptr, const Token* end = nullptr) const;
|
|
std::string stringifyList(const Token* end, bool attributes = true) const;
|
|
std::string stringifyList(bool varid = false) const;
|
|
|
|
/**
|
|
* Remove the contents for this token from the token list.
|
|
*
|
|
* The contents are replaced with the contents of the next token and
|
|
* the next token is unlinked and deleted from the token list.
|
|
*
|
|
* So this token will still be valid after the 'deleteThis()'.
|
|
*/
|
|
void deleteThis();
|
|
|
|
/**
|
|
* Create link to given token
|
|
* @param linkToToken The token where this token should link
|
|
* to.
|
|
*/
|
|
void link(Token *linkToToken) {
|
|
mLink = linkToToken;
|
|
if (mStr == "<" || mStr == ">")
|
|
update_property_info();
|
|
}
|
|
|
|
/**
|
|
* Return token where this token links to.
|
|
* Supported links are:
|
|
* "{" <-> "}"
|
|
* "(" <-> ")"
|
|
* "[" <-> "]"
|
|
*
|
|
* @return The token where this token links to.
|
|
*/
|
|
Token *link() const {
|
|
return mLink;
|
|
}
|
|
|
|
/**
|
|
* Associate this token with given scope
|
|
* @param s Scope to be associated
|
|
*/
|
|
void scope(const Scope *s) {
|
|
mImpl->mScope = s;
|
|
}
|
|
|
|
/**
|
|
* @return a pointer to the scope containing this token.
|
|
*/
|
|
const Scope *scope() const {
|
|
return mImpl->mScope;
|
|
}
|
|
|
|
/**
|
|
* Associate this token with given function
|
|
* @param f Function to be associated
|
|
*/
|
|
void function(const Function *f);
|
|
|
|
/**
|
|
* @return a pointer to the Function associated with this token.
|
|
*/
|
|
const Function *function() const {
|
|
return mTokType == eFunction || mTokType == eLambda ? mImpl->mFunction : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Associate this token with given variable
|
|
* @param v Variable to be associated
|
|
*/
|
|
void variable(const Variable *v) {
|
|
mImpl->mVariable = v;
|
|
if (v || mImpl->mVarId)
|
|
tokType(eVariable);
|
|
else if (mTokType == eVariable)
|
|
tokType(eName);
|
|
}
|
|
|
|
/**
|
|
* @return a pointer to the variable associated with this token.
|
|
*/
|
|
const Variable *variable() const {
|
|
return mTokType == eVariable ? mImpl->mVariable : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Associate this token with given type
|
|
* @param t Type to be associated
|
|
*/
|
|
void type(const ::Type *t);
|
|
|
|
/**
|
|
* @return a pointer to the type associated with this token.
|
|
*/
|
|
const ::Type *type() const {
|
|
return mTokType == eType ? mImpl->mType : nullptr;
|
|
}
|
|
|
|
static const ::Type *typeOf(const Token *tok);
|
|
|
|
static std::pair<const Token*, const Token*> typeDecl(const Token * tok);
|
|
|
|
static std::string typeStr(const Token* tok);
|
|
|
|
/**
|
|
* @return a pointer to the Enumerator associated with this token.
|
|
*/
|
|
const Enumerator *enumerator() const {
|
|
return mTokType == eEnumerator ? mImpl->mEnumerator : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Associate this token with given enumerator
|
|
* @param e Enumerator to be associated
|
|
*/
|
|
void enumerator(const Enumerator *e) {
|
|
mImpl->mEnumerator = e;
|
|
if (e)
|
|
tokType(eEnumerator);
|
|
else if (mTokType == eEnumerator)
|
|
tokType(eName);
|
|
}
|
|
|
|
/**
|
|
* Links two elements against each other.
|
|
**/
|
|
static void createMutualLinks(Token *begin, Token *end);
|
|
|
|
/**
|
|
* This can be called only for tokens that are strings, else
|
|
* the assert() is called. If Token is e.g. '"hello"', this will return
|
|
* 'hello' (removing the double quotes).
|
|
* @return String value
|
|
*/
|
|
std::string strValue() const;
|
|
|
|
/**
|
|
* Move srcStart and srcEnd tokens and all tokens between them
|
|
* into new a location. Only links between tokens are changed.
|
|
* @param srcStart This is the first token to be moved
|
|
* @param srcEnd The last token to be moved
|
|
* @param newLocation srcStart will be placed after this token.
|
|
*/
|
|
static void move(Token *srcStart, Token *srcEnd, Token *newLocation);
|
|
|
|
/** Get progressValue (0 - 100) */
|
|
nonneg int progressValue() const {
|
|
return mImpl->mProgressValue;
|
|
}
|
|
|
|
/** Calculate progress values for all tokens */
|
|
static void assignProgressValues(Token *tok);
|
|
|
|
/**
|
|
* @return the first token of the next argument. Does only work on argument
|
|
* lists. Requires that Tokenizer::createLinks2() has been called before.
|
|
* Returns 0, if there is no next argument.
|
|
*/
|
|
Token* nextArgument() const;
|
|
|
|
/**
|
|
* @return the first token of the next argument. Does only work on argument
|
|
* lists. Should be used only before Tokenizer::createLinks2() was called.
|
|
* Returns 0, if there is no next argument.
|
|
*/
|
|
Token* nextArgumentBeforeCreateLinks2() const;
|
|
|
|
/**
|
|
* @return the first token of the next template argument. Does only work on template argument
|
|
* lists. Requires that Tokenizer::createLinks2() has been called before.
|
|
* Returns 0, if there is no next argument.
|
|
*/
|
|
Token* nextTemplateArgument() const;
|
|
|
|
/**
|
|
* Returns the closing bracket of opening '<'. Should only be used if link()
|
|
* is unavailable.
|
|
* @return closing '>', ')', ']' or '}'. if no closing bracket is found, NULL is returned
|
|
*/
|
|
const Token* findClosingBracket() const;
|
|
Token* findClosingBracket();
|
|
|
|
const Token* findOpeningBracket() const;
|
|
Token* findOpeningBracket();
|
|
|
|
/**
|
|
* @return the original name.
|
|
*/
|
|
const std::string & originalName() const {
|
|
return mImpl->mOriginalName ? *mImpl->mOriginalName : emptyString;
|
|
}
|
|
|
|
const std::list<ValueFlow::Value>& values() const {
|
|
return mImpl->mValues ? *mImpl->mValues : mImpl->mEmptyValueList;
|
|
}
|
|
|
|
/**
|
|
* Sets the original name.
|
|
*/
|
|
template<typename T>
|
|
void originalName(T&& name) {
|
|
if (!mImpl->mOriginalName)
|
|
mImpl->mOriginalName = new std::string(name);
|
|
else
|
|
*mImpl->mOriginalName = name;
|
|
}
|
|
|
|
bool hasKnownIntValue() const {
|
|
if (!mImpl->mValues)
|
|
return false;
|
|
for (const ValueFlow::Value &value : *mImpl->mValues) {
|
|
if (value.isKnown() && value.isIntValue())
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool hasKnownValue() const {
|
|
return mImpl->mValues && std::any_of(mImpl->mValues->begin(), mImpl->mValues->end(), std::mem_fn(&ValueFlow::Value::isKnown));
|
|
}
|
|
|
|
MathLib::bigint getKnownIntValue() const {
|
|
return mImpl->mValues->front().intvalue;
|
|
}
|
|
|
|
const ValueFlow::Value * getValue(const MathLib::bigint val) const {
|
|
if (!mImpl->mValues)
|
|
return nullptr;
|
|
const auto it = std::find_if(mImpl->mValues->begin(), mImpl->mValues->end(), [=](const ValueFlow::Value &value) {
|
|
return value.isIntValue() && value.intvalue == val;
|
|
});
|
|
return it == mImpl->mValues->end() ? nullptr : &*it;;
|
|
}
|
|
|
|
const ValueFlow::Value * getMaxValue(bool condition) const {
|
|
if (!mImpl->mValues)
|
|
return nullptr;
|
|
const ValueFlow::Value *ret = nullptr;
|
|
for (const ValueFlow::Value &value : *mImpl->mValues) {
|
|
if (!value.isIntValue())
|
|
continue;
|
|
if ((!ret || value.intvalue > ret->intvalue) &&
|
|
((value.condition != nullptr) == condition))
|
|
ret = &value;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
const ValueFlow::Value * getMovedValue() const {
|
|
if (!mImpl->mValues)
|
|
return nullptr;
|
|
const auto it = std::find_if(mImpl->mValues->begin(), mImpl->mValues->end(), [](const ValueFlow::Value &value) {
|
|
return value.isMovedValue() && value.moveKind != ValueFlow::Value::MoveKind::NonMovedVariable;
|
|
});
|
|
return it == mImpl->mValues->end() ? nullptr : &*it;;
|
|
}
|
|
|
|
const ValueFlow::Value * getValueLE(const MathLib::bigint val, const Settings *settings) const;
|
|
const ValueFlow::Value * getValueGE(const MathLib::bigint val, const Settings *settings) const;
|
|
|
|
const ValueFlow::Value * getInvalidValue(const Token *ftok, nonneg int argnr, const Settings *settings) const;
|
|
|
|
const ValueFlow::Value * getContainerSizeValue(const MathLib::bigint val) const {
|
|
if (!mImpl->mValues)
|
|
return nullptr;
|
|
const auto it = std::find_if(mImpl->mValues->begin(), mImpl->mValues->end(), [=](const ValueFlow::Value &value) {
|
|
return value.isContainerSizeValue() && value.intvalue == val;
|
|
});
|
|
return it == mImpl->mValues->end() ? nullptr : &*it;
|
|
}
|
|
|
|
const Token *getValueTokenMaxStrLength() const;
|
|
const Token *getValueTokenMinStrSize() const;
|
|
|
|
const Token *getValueTokenDeadPointer() const;
|
|
|
|
/** Add token value. Return true if value is added. */
|
|
bool addValue(const ValueFlow::Value &value);
|
|
|
|
template<class Predicate>
|
|
void removeValues(Predicate pred) {
|
|
if (mImpl->mValues)
|
|
mImpl->mValues->remove_if(pred);
|
|
}
|
|
|
|
nonneg int index() const {
|
|
return mImpl->mIndex;
|
|
}
|
|
|
|
void assignIndexes();
|
|
|
|
private:
|
|
|
|
void next(Token *nextToken) {
|
|
mNext = nextToken;
|
|
}
|
|
void previous(Token *previousToken) {
|
|
mPrevious = previousToken;
|
|
}
|
|
|
|
/** used by deleteThis() to take data from token to delete */
|
|
void takeData(Token *fromToken);
|
|
|
|
/**
|
|
* Works almost like strcmp() except returns only true or false and
|
|
* if str has empty space ' ' character, that character is handled
|
|
* as if it were '\\0'
|
|
*/
|
|
static bool firstWordEquals(const char *str, const char *word);
|
|
|
|
/**
|
|
* Works almost like strchr() except
|
|
* if str has empty space ' ' character, that character is handled
|
|
* as if it were '\\0'
|
|
*/
|
|
static const char *chrInFirstWord(const char *str, char c);
|
|
|
|
std::string mStr;
|
|
|
|
Token *mNext;
|
|
Token *mPrevious;
|
|
Token *mLink;
|
|
|
|
enum {
|
|
fIsUnsigned = (1 << 0),
|
|
fIsSigned = (1 << 1),
|
|
fIsPointerCompare = (1 << 2),
|
|
fIsLong = (1 << 3),
|
|
fIsStandardType = (1 << 4),
|
|
fIsExpandedMacro = (1 << 5),
|
|
fIsCast = (1 << 6),
|
|
fIsAttributeConstructor = (1 << 7), // __attribute__((constructor)) __attribute__((constructor(priority)))
|
|
fIsAttributeDestructor = (1 << 8), // __attribute__((destructor)) __attribute__((destructor(priority)))
|
|
fIsAttributeUnused = (1 << 9), // __attribute__((unused))
|
|
fIsAttributePure = (1 << 10), // __attribute__((pure))
|
|
fIsAttributeConst = (1 << 11), // __attribute__((const))
|
|
fIsAttributeNoreturn = (1 << 12), // __attribute__((noreturn)), __declspec(noreturn)
|
|
fIsAttributeNothrow = (1 << 13), // __attribute__((nothrow)), __declspec(nothrow)
|
|
fIsAttributeUsed = (1 << 14), // __attribute__((used))
|
|
fIsAttributePacked = (1 << 15), // __attribute__((packed))
|
|
fIsControlFlowKeyword = (1 << 16), // if/switch/while/...
|
|
fIsOperatorKeyword = (1 << 17), // operator=, etc
|
|
fIsComplex = (1 << 18), // complex/_Complex type
|
|
fIsEnumType = (1 << 19), // enumeration type
|
|
fIsName = (1 << 20),
|
|
fIsLiteral = (1 << 21),
|
|
fIsTemplateArg = (1 << 22),
|
|
fIsAttributeNodiscard = (1 << 23), // __attribute__ ((warn_unused_result)), [[nodiscard]]
|
|
fAtAddress = (1 << 24), // @ 0x4000
|
|
};
|
|
|
|
Token::Type mTokType;
|
|
|
|
unsigned int mFlags;
|
|
|
|
TokenImpl *mImpl;
|
|
|
|
/**
|
|
* Get specified flag state.
|
|
* @param flag_ flag to get state of
|
|
* @return true if flag set or false in flag not set
|
|
*/
|
|
bool getFlag(unsigned int flag_) const {
|
|
return ((mFlags & flag_) != 0);
|
|
}
|
|
|
|
/**
|
|
* Set specified flag state.
|
|
* @param flag_ flag to set state
|
|
* @param state_ new state of flag
|
|
*/
|
|
void setFlag(unsigned int flag_, bool state_) {
|
|
mFlags = state_ ? mFlags | flag_ : mFlags & ~flag_;
|
|
}
|
|
|
|
/** Updates internal property cache like _isName or _isBoolean.
|
|
Called after any mStr() modification. */
|
|
void update_property_info();
|
|
|
|
/** Update internal property cache about isStandardType() */
|
|
void update_property_isStandardType();
|
|
|
|
/** Update internal property cache about string and char literals */
|
|
void update_property_char_string_literal();
|
|
|
|
/** Internal helper function to avoid excessive string allocations */
|
|
void astStringVerboseRecursive(std::string& ret, const nonneg int indent1 = 0, const nonneg int indent2 = 0) const;
|
|
|
|
public:
|
|
void astOperand1(Token *tok);
|
|
void astOperand2(Token *tok);
|
|
|
|
Token * astOperand1() {
|
|
return mImpl->mAstOperand1;
|
|
}
|
|
const Token * astOperand1() const {
|
|
return mImpl->mAstOperand1;
|
|
}
|
|
Token * astOperand2() {
|
|
return mImpl->mAstOperand2;
|
|
}
|
|
const Token * astOperand2() const {
|
|
return mImpl->mAstOperand2;
|
|
}
|
|
Token * astParent() {
|
|
return mImpl->mAstParent;
|
|
}
|
|
const Token * astParent() const {
|
|
return mImpl->mAstParent;
|
|
}
|
|
Token *astTop() {
|
|
Token *ret = this;
|
|
while (ret->mImpl->mAstParent)
|
|
ret = ret->mImpl->mAstParent;
|
|
return ret;
|
|
}
|
|
|
|
const Token *astTop() const {
|
|
const Token *ret = this;
|
|
while (ret->mImpl->mAstParent)
|
|
ret = ret->mImpl->mAstParent;
|
|
return ret;
|
|
}
|
|
|
|
std::pair<const Token *, const Token *> findExpressionStartEndTokens() const;
|
|
|
|
/**
|
|
* Is current token a calculation? Only true for operands.
|
|
* For '*' and '&' tokens it is looked up if this is a
|
|
* dereference or address-of. A dereference or address-of is not
|
|
* counted as a calculation.
|
|
* @return returns true if current token is a calculation
|
|
*/
|
|
bool isCalculation() const;
|
|
|
|
void clearAst() {
|
|
mImpl->mAstOperand1 = mImpl->mAstOperand2 = mImpl->mAstParent = nullptr;
|
|
}
|
|
|
|
void clearValueFlow() {
|
|
delete mImpl->mValues;
|
|
mImpl->mValues = nullptr;
|
|
}
|
|
|
|
std::string astString(const char *sep = "") const {
|
|
std::string ret;
|
|
if (mImpl->mAstOperand1)
|
|
ret = mImpl->mAstOperand1->astString(sep);
|
|
if (mImpl->mAstOperand2)
|
|
ret += mImpl->mAstOperand2->astString(sep);
|
|
return ret + sep + mStr;
|
|
}
|
|
|
|
std::string astStringVerbose() const;
|
|
|
|
std::string expressionString() const;
|
|
|
|
void printAst(bool verbose, bool xml, std::ostream &out) const;
|
|
|
|
void printValueFlow(bool xml, std::ostream &out) const;
|
|
};
|
|
|
|
/// @}
|
|
//---------------------------------------------------------------------------
|
|
#endif // tokenH
|