//////////////////////////////////////////////////////////////////////////
//
// Class Relation
//
void Relation::Jumping( int t, int f )
{
Expr* ap = m_pExpr1->Reduce();
Expr* bp = m_pExpr2->Reduce();
std::string test = ap->ToString() + " " + m_pTok->ToString() + " " + bp->ToString();
EmitJumps( test, t, f );
}
//////////////////////////////////////////////////////////////////////////
//
// Class ExprStmt
//
void ExprStmt::Gen( int b, int a, bool bASM )
{
if ( bASM ) GenMovLineno( m_lineno );
Expr* pExpr = m_pExpr->Gen();
if ( pExpr && pExpr->ToString().find( "=" ) != std::string::npos )
{
Emit( pExpr->ToString() );
delete pExpr;
}
}
//////////////////////////////////////////////////////////////////////////
//
// Class CallExpr
//
Expr* CallExpr::Reduce()
{
Emit( "push r0" );
for ( auto arg = m_params.rbegin(); arg != m_params.rend(); arg++ )
{
Expr* pExpr = (*arg)->Gen();
Temp* temp = new Temp( (*arg)->m_pType );
Emit( temp->ToString() + " = " + pExpr->ToString() );
Emit( "arg " + temp->ToString() );
delete temp;
delete pExpr;
}
Emit( "call " + m_id.ToString() );
for ( std::size_t i = 0; i < m_params.size(); i++ )
{
Emit( "pop r0" );
}
Temp* temp = new Temp( m_pType );
Emit( "pop " + temp->ToString() );
return temp;
}
//////////////////////////////////////////////////////////////////////////
//
// Class ReadStmt
//
void ReadStmt::Gen( int b, int a, bool bASM )
{
if ( bASM ) GenMovLineno( m_lineno );
Expr* pExpr = m_pExpr->Gen();
Temp temp( m_pExpr->m_pType );
Emit( temp.ToString() + " = " + pExpr->ToString() );
Emit( "read " + temp.ToString() );
delete pExpr;
}
//////////////////////////////////////////////////////////////////////////
//
// Class ReturnStmt
//
void ReturnStmt::Gen( int b, int a, bool bASM )
{
if ( bASM ) GenMovLineno( m_lineno );
Expr* pExpr = m_pExpr->Gen();
Temp* temp = new Temp( m_pExpr->m_pType );
Emit( temp->ToString() + " = " + pExpr->ToString() );
Emit( "leave " + temp->ToString() );
delete temp;
delete pExpr;
}
//////////////////////////////////////////////////////////////////////////
//
// Class Unary
//
Expr* Unary::Gen()
{
if ( m_pTok->m_Tag == Tag::TIMES )
{
Expr* exp = m_pExpr->Reduce();
Temp temp( exp->m_pType );
Emit( temp.ToString() + " = " + exp->ToString() );
Temp* t = new Temp( exp->m_pType );
Emit( t->ToString() + " = " + m_pTok->ToString() + " " + temp.ToString() );
delete exp;
return t;
}
return new Unary( m_pTok->Clone(), m_pExpr->Reduce() );
}
//////////////////////////////////////////////////////////////////////////
//
// Class WriteStmt
//
void WriteStmt::Gen( int b, int a, bool bASM )
{
if ( bASM ) GenMovLineno( m_lineno );
if ( typeid( *m_pExpr ) == typeid( Constant ) )
{
Emit( "write " + itoa( dynamic_cast<Num*>(dynamic_cast<Constant*>(m_pExpr)->m_pTok)->m_Val ) );
}
else
{
Expr* pExpr = m_pExpr->Gen();
Temp temp( m_pExpr->m_pType );
Emit( temp.ToString() + " = " + pExpr->ToString() );
Emit( "write " + temp.ToString() );
delete pExpr;
}
}
Expr* Arith::Gen()
{
if ( typeid( *m_pExpr1 ) == typeid( ArrayAccess ) && m_pTok->m_Tag == Tag::ASSIGN )
{
Expr* p1 = dynamic_cast<ArrayAccess*>( m_pExpr1 )->m_index->Reduce();
std::string s1 = p1->ToString();
Expr* p2 = m_pExpr2->Reduce();
std::string s2 = p2->ToString();
Emit( dynamic_cast<ArrayAccess*>( m_pExpr1 )->m_array.ToString() + "[" + s1 + "] = " + s2 );
Temp* temp = new Temp( m_pType );
Emit( temp->ToString() + " = " + dynamic_cast<ArrayAccess*>( m_pExpr1 )->m_array.ToString() + "[" + s1 + "]" );
delete p1;
delete p2;
return temp;
}
else if ( m_pTok->m_Tag == Tag::ASSIGN )
{
Arith* exp = new Arith( m_pTok->Clone(), m_pExpr1->Reduce(), m_pExpr2->Reduce(), false );
Emit( exp->ToString() );
Temp* temp = new Temp( m_pType );
Emit( temp->ToString() + " " + m_pTok->ToString() + " " + m_pExpr1->ToString() );
delete exp;
return temp;
}
else if ( m_pTok->m_Tag == Tag::POINT || m_pTok->m_Tag == Tag::ARROW )
{
Arith* exp = new Arith( m_pTok->Clone(), m_pExpr1->Reduce(), m_pExpr2->Reduce(), false );
return exp;
}
else
{
Expr* exp = new Arith( m_pTok->Clone(), m_pExpr1->Reduce(), m_pExpr2->Reduce(), false );
Temp* temp = new Temp( m_pType );
Emit( temp->ToString() + " = " + exp->ToString() );
delete exp;
return temp;
}
}
//////////////////////////////////////////////////////////////////////////
//
// Class CallStmt
//
void CallStmt::Gen( int b, int a, bool bASM )
{
if ( bASM ) GenMovLineno( m_lineno );
for ( auto arg = m_args.rbegin(); arg != m_args.rend(); arg++ )
{
Expr* pExpr = (*arg)->Gen();
Temp* temp = new Temp( (*arg)->m_pType );
Emit( temp->ToString() + " = " + pExpr->ToString() );
Emit( "arg " + temp->ToString() );
delete temp;
delete pExpr;
}
Emit( "call " + m_id.ToString() );
for ( std::size_t i = 0; i < m_args.size(); i++ )
{
Emit( "pop r0" );
}
}