op.java

来自「A compiler for a subset of the Java lang」· Java 代码 · 共 30 行

package inter;
import lexer.*; import symbols.*;

public class Op extends Expr {

   public Op(Token tok, Type p)  { super(tok, p); }

   public Expr reduce() {
      Expr x = gen();
      emit(x.toString());
      Temp t = new Temp(type);
    //emit( t.toString() + " = " + x.toString() );
      
      
      if(type == Type.Int) {
    	  emit("istore " + t.lvaIdx + "\n");
      }
      else if(type == Type.Float) {
    	  emit("fstore " + t.lvaIdx + "\n");
      }
      else if(type == Type.Complex)
      {
    	  emit("fstore " + (t.lvaIdx + 4) + "\n");
    	  emit("fstore " + t.lvaIdx + "\n");
      }
      
      return t;
   }
}