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#ifndef SELECTION_SELECTIONCOMPILER_HPP | 
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#define SELECTION_SELECTIONCOMPILER_HPP | 
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#include <iostream> | 
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#include <string> | 
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#include <vector> | 
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#include "selection/Token.hpp" | 
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#include "selection/TokenMap.hpp" | 
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namespace oopse { | 
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/** | 
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 * @class SelectionCompiler SelectionCompiler.hpp "selection/SelectionCompiler.hpp" | 
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 * @brief compile a selection script to tokens | 
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 * @todo document | 
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 * <pre> | 
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    expression       :: = clauseOr | 
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    clausePrimitive  ::= clauseComparator | | 
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                         clauseWithin | | 
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                         clauseResidueSpec | | 
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                         clauseChemObject | | 
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                         none | all | | 
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                         ( clauseOr ) | 
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    clauseWithin     ::= WITHIN ( clauseDistance , expression ) | 
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    clauseDistance   ::= integer | decimal | 
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    clauseChemObject::= {clauseMolecule} | {clauseStuntDouble} | 
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    clauseMolecule ::= {clauseMolName} | {clauseMolIndex} | 
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    clauseResidueSpec::= { clauseResNameSpec } | 
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                         { clauseResNumSpec } | 
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                         { chainSpec } | 
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                         { clauseAtomSpec } | 
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                         { modelSpec } | 
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    clauseMolName ::= molname clauseName | 
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    clauseName::= *|string | 
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    clauseResNameSpec::= * | [ resNamePattern ] | resNamePattern | 
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    clauseMolIndex ::= molindex clauseIndex | 
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    clauseIndex ::= integer {- integer } | 
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    clauseStuntDouble ::= {clauseStuntDoubleName} | {clauseStuntDoubleIndex} | 
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    // question marks are part of identifiers | 
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    // they get split up and dealt with as wildcards at runtime | 
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    // and the integers which are residue number chains get bundled | 
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    // in with the identifier and also split out at runtime | 
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    // iff a variable of that name does not exist | 
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    clauseStuntDoubleName ::= name clauseName | 
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    resNamePattern   ::= up to 3 alphanumeric chars with * and ? | 
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    clauseStuntDoubleIndex ::= index clauseIndex | 
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    clauseResNumSpec ::= * | clauseSequenceRange | 
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 * </pre> | 
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 */ | 
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class SelectionCompiler{ | 
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    public: | 
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        bool compile(const std::string& filename, const std::string& script ); | 
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    clauseSequenceRange ::= clauseSequenceCode { - clauseSequenceCode } | 
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        std::vector<int> getLineNumbers() { | 
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            return lineNumbers; | 
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        } | 
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    clauseSequenceCode ::= seqcode | {-} integer | 
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        std::vector<int> getLineIndices() { | 
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            return lineIndices; | 
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        } | 
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    clauseChainSpec  ::= {:} * | identifier | integer | 
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        std::vector<std::vector<Token> > getAatokenCompiled() { | 
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            return aatokenCompiled; | 
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        } | 
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    clauseAtomSpec   ::= . * | . identifier {*} // note that this * is *not* a wildcard | 
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        std::string getErrorMessage() { | 
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            std::string strError = errorMessage; | 
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            strError += " : " + errorLine + "\n"; | 
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    clauseModelSpec  ::= {:|/} * | integer | 
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  | 
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 * </pre> | 
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 */ | 
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class SelectionCompiler{ | 
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    public: | 
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        bool compile(); | 
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            if (!filename.empty()) { | 
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                strError += filename; | 
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            } | 
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        std::vector<Token> getCompiledTokens(); | 
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            strError += " line#" + lineCurrent; | 
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            return strError; | 
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        } | 
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    private: | 
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        bool internalCompile(); | 
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        bool lookingAtLeadingWhitespace(); | 
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        bool lookingAtComment(); | 
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        bool lookingAtEndOfLine(); | 
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        bool lookingAtEndOfStatement(); | 
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        bool lookingAtString(); | 
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        bool lookingAtDecimal(bool allowNegative); | 
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        bool lookingAtInteger(bool allowNegative); | 
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        bool lookingAtLookupToken(); | 
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        bool lookingAtSpecialString(); | 
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        std::string getUnescapedStringLiteral(); | 
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        int getHexitValue(char ch);         | 
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        bool compileCommand(const std::vector<Token>& ltoken); | 
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        bool compileExpression();         | 
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        bool compileExpression(int itoken);         | 
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        bool clauseOr(); | 
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        bool clauseAnd(); | 
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        bool clauseNot(); | 
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        bool clausePrimitive(); | 
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        bool clauseWithin(); | 
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        bool clauseComparator(); | 
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        bool clauseName(int tok); | 
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        bool clauseIndex(int tok); | 
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        Token tokenNext(); | 
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        boost::any valuePeek(); | 
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        int tokPeek(); | 
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        bool addTokenToPostfix(const Token& token); | 
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        bool compileError(const std::string& errorMessage) { | 
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            std::cerr << "SelectionCompiler Error: " << errorMessage << std::endl; | 
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            error = true; | 
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            this->errorMessage = errorMessage; | 
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            return false; | 
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        } | 
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        internalCompile(); | 
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        bool commandExpected() { | 
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            return compileError("command expected"); | 
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        } | 
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        std::vector<Token> compiledTokens_; | 
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        bool invalidExpressionToken(const std::string& ident) { | 
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            return compileError("invalid expression token:" + ident); | 
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        } | 
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        bool unrecognizedToken() { | 
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            return compileError("unrecognized token"); | 
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        } | 
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        bool badArgumentCount() { | 
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            return compileError("bad argument count"); | 
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        } | 
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        bool endOfExpressionExpected() { | 
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            return compileError("end of expression expected"); | 
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        } | 
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        bool leftParenthesisExpected() { | 
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            return compileError("left parenthesis expected"); | 
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        } | 
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        bool rightParenthesisExpected() { | 
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            return compileError("right parenthesis expected"); | 
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        } | 
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        bool commaExpected() { | 
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            return compileError("comma expected"); | 
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        } | 
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        bool unrecognizedExpressionToken() { | 
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            boost::any tmp = valuePeek(); | 
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            std::string tokenStr; | 
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            try { | 
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                tokenStr = boost::any_cast<std::string>(tmp);                 | 
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            } catch(const boost::bad_any_cast &) { | 
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                return compileError("any_cast error"); | 
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            } | 
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            return compileError("unrecognized expression token:" + tokenStr); | 
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        } | 
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        bool comparisonOperatorExpected() { | 
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            return compileError("comparison operator expected"); | 
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        } | 
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        bool integerExpected() { | 
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            return compileError("integer expected"); | 
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        }         | 
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        bool numberOrKeywordExpected() { | 
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            return compileError("number or keyword expected"); | 
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        }         | 
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        std::string filename; | 
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        std::string script; | 
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        std::vector<int> lineNumbers; | 
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        std::vector<int> lineIndices; | 
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        std::vector<std::vector<Token> >aatokenCompiled; | 
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        bool error; | 
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        std::string errorMessage; | 
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        std::string errorLine; | 
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        int cchScript; | 
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        short lineCurrent; | 
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        int ichToken; | 
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        int cchToken; | 
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        std::vector<Token> atokenCommand; | 
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        int ichCurrentCommand; | 
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        std::vector<Token> ltokenPostfix; | 
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        std::vector<Token> atokenInfix; | 
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        int itokenInfix; | 
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        //std::vector<Token> compiledTokens_; | 
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}; | 
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} | 
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#endif | 
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