/*
 * This file is part of the Cforall project
 *
 * $Id: Statement.h,v 1.18 2005/08/29 20:59:26 rcbilson Exp $
 *
 */

#ifndef STATEMENT_H
#define STATEMENT_H

#include "SynTree.h"
#include "Visitor.h"
#include "Mutator.h"
#include "Common/SemanticError.h"


class Statement
{
public:
    Statement( std::list<Label> labels );
    virtual ~Statement();

    std::list<Label> & get_labels() { return labels; }

    virtual Statement *clone() const = 0;
    virtual void accept( Visitor &v ) = 0;
    virtual Statement *acceptMutator( Mutator &m ) = 0;
    virtual void print( std::ostream &os, int indent = 0 );
    
protected:
    std::list<Label> labels;
};

class CompoundStmt : public Statement
{
public:
    CompoundStmt( std::list<Label> labels );
    CompoundStmt( const CompoundStmt &other );
    virtual ~CompoundStmt();

    std::list<Statement*>& get_kids() { return kids; }

    virtual CompoundStmt *clone() const { return new CompoundStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual CompoundStmt *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    std::list<Statement*> kids;
};

class ExprStmt : public Statement
{
public:
    ExprStmt( std::list<Label> labels, Expression *expr );
    virtual ~ExprStmt();

    Expression *get_expr() { return expr; }
    void set_expr( Expression *newValue ) { expr = newValue; }

    virtual ExprStmt *clone() const { return new ExprStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression *expr;
};

class IfStmt : public Statement
{
public:
    IfStmt( std::list<Label> labels, Expression *condition, Statement *thenPart, Statement *elsePart );
    virtual ~IfStmt();

    Expression *get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }
    Statement *get_thenPart() { return thenPart; }
    void set_thenPart( Statement *newValue ) { thenPart = newValue; }
    Statement *get_elsePart() { return elsePart; }
    void set_elsePart( Statement *newValue ) { elsePart = newValue; }
    
    virtual IfStmt *clone() const { return new IfStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression *condition;
    Statement *thenPart;
    Statement *elsePart;
};

class SwitchStmt : public Statement
{
public:
    SwitchStmt( std::list<Label> labels, Expression *condition, std::list<Statement *> &branches );
    virtual ~SwitchStmt();

    Expression *get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }

    std::list<Statement *>& get_branches() { return branches; }
    void add_case( CaseStmt * );

    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }

    virtual SwitchStmt *clone() const { return new SwitchStmt( *this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression * condition;
    std::list<Statement *> branches; // should be list of CaseStmt
};

class ChooseStmt : public Statement
{
public:
    ChooseStmt( std::list<Label> labels, Expression *condition, std::list<Statement *> &branches );
    virtual ~ChooseStmt();

    Expression *get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }

    std::list<Statement *>& get_branches() { return branches; }
    void add_case( CaseStmt * );
    

    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }

    virtual ChooseStmt *clone() const { return new ChooseStmt( *this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression *condition;
    std::list<Statement *> branches; // should be list of CaseStmt
};

class FallthruStmt : public Statement {
public:
    FallthruStmt( std::list<Label> labels ) : Statement( labels ) { }

    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }

    virtual FallthruStmt *clone() const { return new FallthruStmt( *this ); }
    virtual void print( std::ostream &os, int indent = 0 );
};

class CaseStmt : public Statement
{
public:
    CaseStmt( std::list<Label> labels, Expression *conditions, 
	    std::list<Statement *> &stmts, bool isdef = false ) throw(SemanticError);
    virtual ~CaseStmt();

    bool isDefault() { return _isDefault; }
    void set_default(bool b) { _isDefault = b; }

    Expression * &get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }

    std::list<Statement *> &get_statements() { return stmts; }
    void set_statements( std::list<Statement *> &newValue ) { stmts = newValue; }
    
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }

    virtual CaseStmt *clone() const { return new CaseStmt( *this ); }
    virtual void print( std::ostream &os, int indent = 0 );

private:
    Expression * condition;
    std::list<Statement *> stmts;
    bool _isDefault;
};

class WhileStmt : public Statement
{
public:
    WhileStmt( std::list<Label> labels, Expression *condition,
				    Statement *body, bool isDoWhile = false );
    virtual ~WhileStmt();

    Expression *get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }
    Statement *get_body() { return body; }
    void set_body( Statement *newValue ) { body = newValue; }
    bool get_isDoWhile() { return isDoWhile; }
    void set_isDoWhile( bool newValue ) { isDoWhile = newValue; }
    
    virtual WhileStmt *clone() const { return new WhileStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression *condition;
    Statement *body;
    bool isDoWhile;
};

class ForStmt : public Statement
{
public:
    ForStmt( std::list<Label> labels, Statement *initialization = 0,
	 Expression *condition = 0, Expression *increment = 0, Statement *body = 0 );
    virtual ~ForStmt();

    Statement *get_initialization() { return initialization; }
    void set_initialization( Statement *newValue ) { initialization = newValue; }
    Expression *get_condition() { return condition; }
    void set_condition( Expression *newValue ) { condition = newValue; }
    Expression *get_increment() { return increment; }
    void set_increment( Expression *newValue ) { increment = newValue; }
    Statement *get_body() { return body; }
    void set_body( Statement *newValue ) { body = newValue; }
    
    virtual ForStmt *clone() const { return new ForStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Statement *initialization;
    Expression *condition;
    Expression *increment;
    Statement *body;
};

class BranchStmt : public Statement
{
public:

    enum Type { Goto = 0 , Break, Continue };

    BranchStmt( std::list<Label> labels, Label target, Type ) throw (SemanticError);
    BranchStmt( std::list<Label> labels, Expression *computedTarget, Type ) throw (SemanticError);
    virtual ~BranchStmt() {}

    Label get_target() { return target; }
    void set_target( Label newValue ) { target = newValue; }
    
    Expression *get_computedTarget() { return computedTarget; }
    void set_target( Expression * newValue ) { computedTarget = newValue; }

    Type get_type() { return type; }
    const char *get_typename() { return brType[ type ]; }

    virtual BranchStmt *clone() const { return new BranchStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    static const char *brType[];
    Label target;
    Expression *computedTarget;
    Type type;
};

class ReturnStmt : public Statement
{
public:
    ReturnStmt( std::list<Label> labels, Expression *expr, bool throwP = false );
    virtual ~ReturnStmt();

    Expression *get_expr() { return expr; }
    void set_expr( Expression *newValue ) { expr = newValue; }
    
    virtual ReturnStmt *clone() const { return new ReturnStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Expression *expr;
    bool isThrow;
};


class NullStmt : public CompoundStmt
{
public:
    NullStmt();
    NullStmt( std::list<Label> labels );
    virtual ~NullStmt();

    virtual NullStmt *clone() const { return new NullStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual NullStmt *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
};

class TryStmt : public Statement
{ 
public:
    TryStmt( std::list<Label> labels, CompoundStmt *tryBlock, std::list<Statement *> &handlers, FinallyStmt *finallyBlock = 0 );
    TryStmt( const TryStmt &other );
    virtual ~TryStmt();

    CompoundStmt *get_block() const { return block; }
    void set_block( CompoundStmt *newValue ) { block = newValue; }
    std::list<Statement *>& get_catchers() { return handlers; }

    FinallyStmt *get_finally() const { return finallyBlock; }
    void set_finally( FinallyStmt *newValue ) { finallyBlock = newValue; }

    virtual TryStmt *clone() const { return new TryStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    CompoundStmt *block;
    std::list<Statement *> handlers;
    FinallyStmt *finallyBlock;
}; 

class CatchStmt : public Statement
{
public:
    CatchStmt( std::list<Label> labels, Declaration *decl, Statement *body, bool isCatchRest = false );
    virtual ~CatchStmt();

    Declaration *get_decl() { return decl; }
    void set_decl( Declaration *newValue ) { decl = newValue; }

    Statement *get_body() { return body; }
    void set_body( Statement *newValue ) { body = newValue; }
    
    virtual CatchStmt *clone() const { return new CatchStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Declaration *decl;
    Statement *body;
    bool catchRest;
};

class FinallyStmt : public Statement
{ 
public:
    FinallyStmt( std::list<Label> labels, CompoundStmt *block );
    virtual ~FinallyStmt();

    CompoundStmt *get_block() const { return block; }
    void set_block( CompoundStmt *newValue ) { block = newValue; }
    
    virtual FinallyStmt *clone() const { return new FinallyStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    CompoundStmt *block;
}; 


// represents a declaration that occurs as part of a compound statement
class DeclStmt : public Statement
{
public:
    DeclStmt( std::list<Label> labels, Declaration *decl );
    DeclStmt( const DeclStmt &other );
    virtual ~DeclStmt();

    Declaration *get_decl() { return decl; }
    void set_decl( Declaration *newValue ) { decl = newValue; }

    virtual DeclStmt *clone() const { return new DeclStmt( *this ); }
    virtual void accept( Visitor &v ) { v.visit( this ); }
    virtual Statement *acceptMutator( Mutator &m ) { return m.mutate( this ); }
    virtual void print( std::ostream &os, int indent = 0 );
    
private:
    Declaration *decl;
};



#endif /* #ifndef STATEMENT_H */

/*
    Local Variables:
    mode: c++
    End:
*/