addnode.java

一个JAVA编写的简单编译器

package ast.binaryExpr;


public class AddNode extends ast.JSubNode {
  public AddNode (ast.IJSubNode n) {
    super (n);
  }
  
  public String toString () {
    return "+";
  }    
  
  public void codegen () {
    int k = getNumChildren ();
    ast.IJSubNode value = (ast.IJSubNode)getChild (0);
    value.codegen ();
    for (int i = 1; i < k; i++) {
      ast.IJSubNode nextvalue = (ast.IJSubNode)getChild (i);
      nextvalue.codegen ();
      codegen.WriteCode.genInstruction ("iadd");
    }      
  }  
  
  public String getXMLType () {
    return "add";
  }
}