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+/***************************************************************************
+ begin : Sat Jul 21 2001
+ copyright : (C) 2001 by Victor R�er
+ email : victor_roeder@gmx.de
+ copyright : (C) 2002,2003 by Roberto Raggi
+ email : roberto@kdevelop.org
+ copyright : (C) 2005 by Adam Treat
+ email : manyoso@yahoo.com
+ copyright : (C) 2006 by David Nolden
+ email : david.nolden.kdevelop@art-master.de
+***************************************************************************/
+
+/***************************************************************************
+ * *
+ * 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 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ ***************************************************************************/
+
+#ifndef CPPEVALUATION_H
+#define CPPEVALUATION_H
+
+#include <qvaluelist.h>
+
+#include "expressioninfo.h"
+#include "simpletype.h"
+#include "declarationinfo.h"
+#include <hashedstring.h>
+
+class SimpleContext;
+
+void statusBarText( const QString& str, int time = 1000 );
+
+namespace CppEvaluation {
+
+template <class To, class From>
+extern QValueList<To> convertList( const QValueList<From>& from );
+
+extern QString nameFromType( SimpleType t );
+
+class Operator;
+
+struct OperatorIdentification {
+ QValueList<QString> innerParams; /** Inner parameters of the operator( for the vec["hello"] the "hello" ) */
+ int start, end; /** Range the operator occupies */
+ bool found;
+ Operator* op; ///Can be 0 !
+
+ OperatorIdentification() : start( 0 ), end( 0 ), found( false ), op( 0 ) {}
+
+ operator bool() {
+ return found;
+ }
+};
+
+
+class EvaluationResult {
+ public:
+ EvaluationResult& operator = ( const EvaluationResult& rhs ) {
+ resultType = rhs.resultType;
+ sourceVariable = rhs.sourceVariable;
+ expr = rhs.expr;
+ isMacro = rhs.isMacro;
+ macro = rhs.macro;
+ return *this;
+ }
+
+ EvaluationResult( const EvaluationResult& rhs ) : resultType( rhs.resultType ), expr( rhs.expr ), sourceVariable( rhs.sourceVariable ), isMacro( rhs.isMacro ), macro( rhs.macro ) {}
+
+ LocateResult resultType; ///The resulting type
+
+ ExpressionInfo expr; ///Information about the expression that was processed
+
+ DeclarationInfo sourceVariable; ///If the type comes from a variable, this stores Information about it
+
+ bool isMacro;
+ Macro macro;
+
+ ///should be removed
+ EvaluationResult( SimpleType rhs ) : isMacro( false ) {
+ if ( rhs.get() != 0 )
+ resultType = rhs->desc();
+ }
+
+ EvaluationResult( LocateResult tp = TypeDesc(), DeclarationInfo var = DeclarationInfo() ) : resultType( tp ), sourceVariable( var ), isMacro( false ) {}
+
+ /*operator TypeDesc () const {
+ return (TypeDesc)resultType;
+ }*/
+
+ ///This must be removed
+ operator SimpleType() const {
+ if ( resultType->resolved() ) {
+ return SimpleType( resultType->resolved() );
+ } else {
+ return SimpleType( new SimpleTypeImpl( ( TypeDesc ) resultType ) );
+ }
+ }
+
+ TypeDesc* operator -> () {
+ return & resultType.desc();
+ }
+
+ operator LocateResult () const {
+ return resultType;
+ }
+
+ operator bool() const {
+ return ( bool ) resultType;
+ }
+};
+
+
+
+class Operator {
+ public:
+ enum BindingSide {
+ Neutral = 0,
+ Left = 1,
+ Right = 2
+ };
+ enum Type {
+ Unary = 1,
+ Binary = 2,
+ Ternary = 3
+ };
+
+ virtual ~Operator() {}
+
+ virtual int priority() = 0;
+
+ virtual Type type() = 0;
+ virtual int paramCount() = 0;
+
+ ///"binding" means that the operator needs the evaluated type of the expression on that side
+ ///The types of all bound sides will later be sent in the "params"-list of the apply-function
+ virtual BindingSide binding() = 0; ///The side to which the operator binds
+
+ ///When this returns true, the ident-structure must be filled correctly
+ virtual OperatorIdentification identify( QString& str ) = 0;
+
+ ///params
+ virtual EvaluationResult apply( QValueList<EvaluationResult> params, QValueList<EvaluationResult> innerParams ) = 0;
+
+ virtual QString name() = 0;
+
+ ///Should return whether the item it the given side can be a type(Neutral stands for the inner paremeters)
+ virtual bool canBeType( BindingSide side ) {
+ return true;
+ }
+
+ protected:
+ void log( const QString& msg );
+ QString printTypeList( QValueList<EvaluationResult>& lst );
+};
+
+
+class OperatorSet {
+ private:
+ typedef QValueList< Operator* > OperatorList;
+ OperatorList m_operators;
+ public:
+ OperatorSet() {}
+
+ ~OperatorSet();
+
+ void registerOperator( Operator* op ) {
+ m_operators << op;
+ }
+
+ OperatorIdentification identifyOperator( const QString& str_ , Operator::BindingSide allowedBindings = ( Operator::BindingSide ) ( Operator::Left | Operator::Right | Operator::Neutral ) );
+
+};
+extern OperatorSet AllOperators;
+
+
+template <class OperatorType>
+class RegisterOperator {
+ public:
+ RegisterOperator( OperatorSet& set
+ ) {
+ set.registerOperator( new OperatorType() );
+ }
+ ~RegisterOperator() {}
+}
+;
+
+
+class UnaryOperator : public Operator {
+ public:
+ UnaryOperator( int priority , QString identString, QString description, Operator::BindingSide binding ) : Operator(), m_priority( priority ), m_identString( identString ), m_name( description ), m_binding( binding ) {}
+
+ virtual int priority() {
+ return m_priority;
+ }
+
+ virtual Operator::Type type() {
+ return Operator::Unary;
+ }
+
+ virtual Operator::BindingSide binding() {
+ return m_binding;
+ }
+
+ virtual int paramCount() {
+ return 1;
+ }
+
+ virtual OperatorIdentification identify( QString& str );
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& innerParams ) = 0;
+
+ virtual bool checkParams( const QValueList<EvaluationResult>& params ) {
+ return !params.isEmpty() && params[ 0 ];
+ }
+
+ virtual EvaluationResult apply( QValueList<EvaluationResult> params, QValueList<EvaluationResult> innerParams );
+
+ virtual QString name() {
+ return m_name;
+ }
+
+ private:
+ int m_priority;
+ QString m_identString;
+ QString m_name;
+ Operator::BindingSide m_binding;
+ protected:
+
+ QString identString() const {
+ return m_identString;
+ }
+
+};
+
+
+class NestedTypeOperator : public UnaryOperator {
+ public:
+ NestedTypeOperator() : UnaryOperator( 18, "::", "nested-type-operator", Operator::Left ) {}
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& /*innerParams*/ );
+};
+
+//RegisterOperator< NestedTypeOperator > NestedTypeReg( AllOperators ); ///This registers the operator to the list of all operators
+
+class DotOperator : public UnaryOperator {
+ public:
+ DotOperator() : UnaryOperator( 17, ".", "dot-operator", Operator::Left ) {}
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& /*innerParams*/ );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+class ArrowOperator : public UnaryOperator {
+ public:
+ ArrowOperator() : UnaryOperator( 17, "->", "arrow-operator", Operator::Left ) {}
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& innerParams );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+
+class StarOperator : public UnaryOperator {
+ public:
+ StarOperator() : UnaryOperator( 15, "*", "star-operator", Operator::Right ) { ///Normally this should have a priority of 16, but that would need changes to the expression-parsin g-loop
+ }
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& /*innerParams*/ );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+
+class AddressOperator : public UnaryOperator {
+ public:
+ AddressOperator() : UnaryOperator( 16, "&", "address-operator", Operator::Right ) {}
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& /*innerParams*/ );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+
+class UnaryParenOperator : public UnaryOperator {
+ public:
+ ///Identstring should be both parens, for Example "[]" or "()"
+ UnaryParenOperator( int priority , QString identString, QString description, Operator::BindingSide binding ) : UnaryOperator( priority, identString, description, binding ) {}
+
+ virtual OperatorIdentification identify( QString& str );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+class IndexOperator : public UnaryParenOperator {
+ public:
+ IndexOperator() : UnaryParenOperator( 17, "[]", "index-operator", Operator::Left ) {}
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& innerParams );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+
+class ParenOperator : public UnaryParenOperator {
+ public:
+ ParenOperator() : UnaryParenOperator( 16, "()", "paren-operator", Operator::Left ) {}
+
+ virtual bool checkParams( const QValueList<EvaluationResult>& params ) {
+ return !params.isEmpty();
+ }
+
+ virtual EvaluationResult unaryApply( EvaluationResult param, const QValueList<EvaluationResult>& innerParams );
+
+ virtual bool canBeType( BindingSide side ) {
+ return false;
+ }
+};
+
+//This is used in CppCodeCompletion::evaluateExpression(..)
+class ExpressionEvaluation {
+ private:
+ CppCodeCompletion* m_data;
+ SimpleContext* m_ctx;
+ ExpressionInfo m_expr;
+ bool m_global;
+ OperatorSet& m_operators;
+ HashedStringSet m_includeFiles;
+
+ public:
+ ExpressionEvaluation( CppCodeCompletion* data, ExpressionInfo expr, OperatorSet& operators, const HashedStringSet& includeFiles, SimpleContext* ctx = 0 );
+
+ EvaluationResult evaluate();
+
+ private:
+ /**
+ recursion-method:
+ 1. Find the rightmost operator with the lowest priority, split the expression
+
+ vector[ (*it)->position ]().
+ */
+ virtual EvaluationResult evaluateExpressionInternal( QString expr, EvaluationResult scope, SimpleContext * ctx, SimpleContext* innerCtx , bool canBeTypeExpression = true );
+
+ ///Locates types or members
+ EvaluationResult evaluateAtomicExpression( TypeDesc expr, EvaluationResult scope, SimpleContext * ctx = 0, bool canBeTypeExpression = true );
+};
+
+
+}
+
+#endif
+// kate: indent-mode csands; tab-width 4;
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