source: src/SynTree/Statement.h @ 931dd12

//
// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
//
// The contents of this file are covered under the licence agreement in the
// file "LICENCE" distributed with Cforall.
//
// Statement.h -- 
//
// Author           : Richard C. Bilson
// Created On       : Mon May 18 07:44:20 2015
// Last Modified By : Rob Schluntz
// Last Modified On : Wed Dec 09 14:09:24 2015
// Update Count     : 46
//

#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; }
        const std::list<Label> & get_labels() const { 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 ) const;
  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 ) const;
  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 ) const;
  private:
        Expression *expr;
};

class AsmStmt : public Statement {
  public:
        AsmStmt( std::list<Label> labels, bool voltile, ConstantExpr *instruction, std::list<Expression *> input, std::list<Expression *> output, std::list<ConstantExpr *> clobber, std::list<Label> gotolabels );
        virtual ~AsmStmt();

        bool get_voltile() { return voltile; }
        void set_voltile( bool newValue ) { voltile = newValue; }
        ConstantExpr *get_instruction() { return instruction; }
        void set_instruction( ConstantExpr *newValue ) { instruction = newValue; }
        std::list<Expression *> &get_output() { return output; }
        void set_output( const std::list<Expression *> &newValue ) { output = newValue; }
        std::list<Expression *> &get_input() { return input; }
        void set_input( const std::list<Expression *> &newValue ) { input = newValue; }
        std::list<ConstantExpr *> &get_clobber() { return clobber; }
        void set_clobber( const std::list<ConstantExpr *> &newValue ) { clobber = newValue; }
        std::list<Label> &get_gotolabels() { return gotolabels; }
        void set_gotolabels( const std::list<Label> &newValue ) { gotolabels = newValue; }

        virtual AsmStmt *clone() const { return new AsmStmt( *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 ) const;
  private:
        bool voltile;
        ConstantExpr *instruction;
        std::list<Expression *> output, input;
        std::list<ConstantExpr *> clobber;
        std::list<Label> gotolabels;
};

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 ) const;
  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 ) const;
  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 ) const;
  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 ) const;
};

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

        static CaseStmt * makeDefault( std::list<Label> labels = std::list<Label>(),
                std::list<Statement *> stmts = std::list<Statement *>() );

        bool isDefault() const { 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 ) const;
  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 ) const;
  private:
        Expression *condition;
        Statement *body;
        bool isDoWhile;
};

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

        std::list<Statement *> &get_initialization() { return initialization; }
        void set_initialization( std::list<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 ) const;
  private:
        std::list<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_originalTarget() { return originalTarget; }
        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 ) const;
  private:
        static const char *brType[];
        Label originalTarget;  // can give better error messages if we remember the label name that the user entered
        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 ) const;
  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 ) const;
        
  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 ) const;
        
  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 ) const;
        
  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 ) const;
  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 ) const;
  private:
        Declaration *decl;
};

std::ostream & operator<<( std::ostream & out, Statement * statement );

#endif // STATEMENT_H

// Local Variables: //
// tab-width: 4 //
// mode: c++ //
// compile-command: "make install" //
// End: //