astyle.h

c语言格式化源代码

		int  leadingWhiteSpaces;
		int  maxInStatementIndent;
		int  templateDepth;
		int  prevFinalLineSpaceTabCount;
		int  prevFinalLineTabCount;
		int  defineTabCount;
		char quoteChar;
		char prevNonSpaceCh;
		char currentNonSpaceCh;
		char currentNonLegalCh;
		char prevNonLegalCh;

	protected:    // inline functions
		// check if a specific character can be used in a legal variable/method/class name
		inline bool isLegalNameChar(char ch) const {
			return (isalnum(ch) || ch == '.' || ch == '_'
			        || (isJavaStyle && ch == '$')
			        || (isCStyle && ch == '~')
			        || (isSharpStyle && ch == '@'));	// may be used as a prefix
		}

		// check if a specific character is a whitespace character
		inline bool isWhiteSpace(char ch) const {
			return (ch == ' ' || ch == '\t');
		}
};


class ASEnhancer
{
	public:
		// functions
		ASEnhancer();
		~ASEnhancer();
		void init(int, string, bool, bool, bool, bool, bool);
		void enhance(string &line);
		bool findKeyword(const string &line, int i, const char *header) const;
		char peekNextChar(const string &line, int i) const;

	private:
		// options from command line or options file
		// X ending prevents conflict with ASBeautifier variables
		int  indentLengthX;
		bool useTabsX;
		bool isCStyleX;
		bool isJavaStyleX;
		bool isSharpStyleX;
		bool caseIndentX;
		bool emptyLineFillX;

		// parsing variables
		int  lineNumber;
		bool isInQuote;
		bool isInComment;
		char quoteChar;

		// unindent variables
		int  bracketCount;
		int  switchDepth;
		bool lookingForCaseBracket;
		bool unindentNextLine;

		// struct used by ParseFormattedLine function
		// contains variables used to unindent the case blocks
		struct switchVariables {
			int  switchBracketCount;
			int  unindentDepth;
			bool unindentCase;
		};

		switchVariables sw;                      // switch variables struct
		vector<switchVariables>  swVector;       // stack vector of switch variables

		// event table variables
		bool nextLineIsEventTable;				// begin event table is reached
		bool isInEventTable;					// need to indent an event table

		// stringstream for trace
		stringstream *traceOut;

	private:    // private functions
		int  indentLine(string  &line, const int indent) const;
		int  unindentLine(string  &line, const int unindent) const;

	private:    // inline functions
		// check if a specific character can be used in a legal variable/method/class name
		inline bool isLegalNameCharX(char ch) const {
			return (isalnum(ch) || ch == '.' || ch == '_'
			        || (isJavaStyleX && ch == '$')
			        || (isCStyleX && ch == '~')
			        || (isSharpStyleX && ch == '@'));	// may be used as a prefix

		}

		// check if a specific character is a whitespace character
		inline bool isWhiteSpaceX(char ch) const {
			return (ch == ' ' || ch == '\t');
		}
};


class ASFormatter : public ASBeautifier, private ASEnhancer
{
	public:
		ASFormatter();
		virtual ~ASFormatter();
		virtual void init(ASSourceIterator* iter);
		virtual bool hasMoreLines() const;
		virtual string nextLine();
		void setBracketFormatMode(BracketMode mode);
		void setBreakClosingHeaderBracketsMode(bool state);
		void setOperatorPaddingMode(bool mode);
		void setParensOutsidePaddingMode(bool mode);
		void setParensInsidePaddingMode(bool mode);
		void setParensUnPaddingMode(bool state);
		void setBreakOneLineBlocksMode(bool state);
		void setSingleStatementsMode(bool state);
		void setTabSpaceConversionMode(bool state);
		void setBreakBlocksMode(bool state);
		void setBreakClosingHeaderBlocksMode(bool state);
		void setBreakElseIfsMode(bool state);
		string traceFileName;

	private:
		void ASformatter(ASFormatter &copy);            // not to be imlpemented
		void operator=(ASFormatter&);                  // not to be implemented
		void staticInit();
		void goForward(int i);
		void trimNewLine();
		char peekNextChar() const;
		BracketType getBracketType();
		bool getNextChar();
		bool isBeforeComment() const;
		bool isBeforeLineEndComment(int startPos) const;
		bool isNextWordSharpAccessor() const;
		bool isPointerOrReference() const;
		bool isUnaryMinus() const;
		bool isInExponent() const;
		bool isOneLineBlockReached() const;
		bool lineBeginsWith(char charToCheck) const;
		void appendChar(char ch, bool canBreakLine = true);
		void appendCharInsideComments();
		void appendSequence(const string &sequence, bool canBreakLine = true);
		void appendSpacePad();
		void appendSpaceAfter();
		void breakLine();
		void padOperators(const string *newOperator);
		void padParens();
		void formatBrackets(BracketType bracketType);
		void formatArrayBrackets(BracketType bracketType, bool isOpeningArrayBracket);
		void adjustComments();
		const string *findHeader(const vector<const string*> &headers, bool checkBoundry = true);

		static vector<const string*> headers;
		static vector<const string*> nonParenHeaders;
		static vector<const string*> preDefinitionHeaders;
		static vector<const string*> preCommandHeaders;
		static vector<const string*> operators;
		static vector<const string*> assignmentOperators;
		static vector<const string*> castOperators;

		ASSourceIterator *sourceIterator;
		vector<const string*> *preBracketHeaderStack;
		vector<BracketType> *bracketTypeStack;
		vector<int> *parenStack;
		string readyFormattedLine;
		string currentLine;
		string formattedLine;
		const string *currentHeader;
		const string *previousOperator;    // used ONLY by pad=oper
		char currentChar;
		char previousChar;
		char previousNonWSChar;
		char previousCommandChar;
		char quoteChar;
		int  charNum;
		int  spacePadNum;
		int  templateDepth;
		int  traceLineNumber;
		size_t formattedLineCommentNum;		// comment location on formattedLine
		size_t previousReadyFormattedLineLength;
		BracketMode bracketFormatMode;
		BracketType previousBracketType;
		bool isVirgin;
		bool shouldPadOperators;
		bool shouldPadParensOutside;
		bool shouldPadParensInside;
		bool shouldUnPadParens;
		bool shouldConvertTabs;
		bool isInLineComment;
		bool isInComment;
		bool isInPreprocessor;
		bool isInTemplate;   // true both in template definitions (e.g. template<class A>) and template usage (e.g. F<int>).
		bool doesLineStartComment;
		bool isInQuote;
		bool isInVerbatimQuote;
		bool haveLineContinuationChar;
		bool isInQuoteContinuation;
		bool isInBlParen;
		bool isSpecialChar;
		bool isNonParenHeader;
		bool foundQuestionMark;
		bool foundPreDefinitionHeader;
		bool foundNamespaceHeader;
		bool foundClassHeader;
		bool foundPreCommandHeader;
		bool foundCastOperator;
		bool isInLineBreak;
		bool endOfCodeReached;
		bool lineCommentNoIndent;
		bool isLineReady;
		bool isPreviousBracketBlockRelated;
		bool isInPotentialCalculation;
		bool isCharImmediatelyPostComment;
		bool isPreviousCharPostComment;
		bool isCharImmediatelyPostLineComment;
		bool isCharImmediatelyPostOpenBlock;
		bool isCharImmediatelyPostCloseBlock;
		bool isCharImmediatelyPostTemplate;
		bool shouldBreakOneLineBlocks;
		bool shouldReparseCurrentChar;
		bool shouldBreakOneLineStatements;
//		bool shouldBreakLineAfterComments;
		bool shouldBreakClosingHeaderBrackets;
		bool shouldBreakElseIfs;
		bool passedSemicolon;
		bool passedColon;
		bool isImmediatelyPostComment;
		bool isImmediatelyPostLineComment;
		bool isImmediatelyPostEmptyBlock;
		bool isImmediatelyPostPreprocessor;

		bool shouldBreakBlocks;
		bool shouldBreakClosingHeaderBlocks;
		bool isPrependPostBlockEmptyLineRequested;
		bool isAppendPostBlockEmptyLineRequested;

		bool prependEmptyLine;
		bool appendOpeningBracket;
		bool foundClosingHeader;

		bool isInHeader;
		bool isImmediatelyPostHeader;
		bool isInCase;
		bool isInSharpGenericDefinition;

	private:    // inline functions
		// append the CURRENT character (curentChar)to the current formatted line.
		inline void appendCurrentChar(bool canBreakLine = true) {
			appendChar(currentChar, canBreakLine);
		}

		// check if a specific sequence exists in the current placement of the current line
		inline bool isSequenceReached(const char *sequence) const {
			return currentLine.compare(charNum, strlen(sequence), sequence) == 0;
		}
};

}   // end of namespace astyle


#endif // closes ASTYLE_H