// Assign ---
// Exp lhs, rhs;
public IrStmt visit(AstAssign n)
{
IrExp lhs = n.lhs.accept(this);
IrExp rhs = n.rhs.accept(this);
return new IrMove(lhs, rhs);
}
public void visit(AstAssign n)
{
}
/* throws ParseException */
/* final */
public static AstStmt astStmt()
{
AstExp e1, e2; AstStmt s, s1, s2; AstExpList el; AstStmtList sl;
jj_consume_token(AstRegExpId.kw56);
switch ((jj_ntk == AstRegExpId.UNDEFINED)?jj_ntk_fn():jj_ntk) {
case AstRegExpId.kwBlock:
jj_consume_token(AstRegExpId.kwBlock);
sl = astStmtList();
s = new AstBlock(sl);
break;
case AstRegExpId.kwAssign:
jj_consume_token(AstRegExpId.kwAssign);
e1 = astExp();
e2 = astExp();
s = new AstAssign(e1,e2);
break;
case AstRegExpId.kwCallStmt:
jj_consume_token(AstRegExpId.kwCallStmt);
e1 = astExp();
e2 = astExp();
el = astExpList();
s = new AstCallStmt(e1,(AstId)e2,el);
break;
case AstRegExpId.kwIf:
jj_consume_token(AstRegExpId.kwIf);
e1 = astExp();
s1 = astStmt();
s2 = astStmt();
s = new AstIf(e1,s1,s2);
break;
case AstRegExpId.kwWhile:
jj_consume_token(AstRegExpId.kwWhile);
e1 = astExp();
s1 = astStmt();
s = new AstWhile(e1,s1);
break;
case AstRegExpId.kwPrint:
jj_consume_token(AstRegExpId.kwPrint);
e1 = astExp();
s = new AstPrint(e1);
break;
case AstRegExpId.kwReturn:
jj_consume_token(AstRegExpId.kwReturn);
e1 = astExp();
s = new AstReturn(e1);
break;
case AstRegExpId.kwNullStmt:
jj_consume_token(AstRegExpId.kwNullStmt);
s = null;
break;
default:
jj_la1[8] = jj_gen;
jj_consume_token(AstRegExpId.UNDEFINED);
throw new AstParseException();
}
jj_consume_token(AstRegExpId.kw57);
{if (true) return s;}
throw new Error("Missing return statement in function");
}
/* throws Exception */
// Assign ---
// Exp lhs, rhs;
public void visit(AstAssign n)
{
AstType t1 = n.lhs.accept(this);
AstType t2 = n.rhs.accept(this);
if (! ((null != (n.lhs as AstId) )
|| (null != (n.lhs as AstField) )
|| (null != (n.lhs as AstArrayElm))))
throw new TypeException("Invalid LHS in Assign: " + n.lhs);
if (!compatible(t1,t2))
throw new TypeException("Incompatible types in Assign: " + t1 + " <- " + t2);
}