leaf.java

一个JAVA编写的简单编译器

package ast;

/**
 * an Leaf-Object contains a declaration.
 */
public class Leaf implements ast.IJSubNode {
  private ast.declaration.JSubObject decl;
  private IJSubNode parent = null;

/**
 * consturct leaf-account with any Declaration.
 * 
 * @param decl that Declaration in that Symboltabel
 */ 
  public Leaf (ast.declaration.JSubObject decl) {
    this.decl = decl;
  }

  public String toString () {
    return decl.toString ();
  }

  public String toString (String prefix) {
    return prefix+decl.toString ();
  }    
  
  public void setParent(IJSubNode n) {
    parent = n;
  }
  
  public IJSubNode getParent() { 
    return parent; 
  }

  public void addChild(IJSubNode n) {}

  public IJSubNode getChild(int i) { 
    return null; 
  }
  public java.util.Enumeration elements () {
    return null;
  }
  public int getNumChildren() {
    return 0;
  }

  public void dump(String prefix) {
    System.out.print (prefix);
    decl.dump (prefix);
  }

/**
 * the Codegenerator get the assignment to the store. 
 */ 
  public String getLoadString () {
    return decl.getLoadString ();
  }
  
/**
 * the Codegenerator get the assignment to the saving.
 */ 
  public String getStoreString () {
    return decl.getStoreString ();
  }
  
  public ast.declaration.JSubObject getDeclaration () {
    return decl;
  }
  public void codegen () {
    codegen.WriteCode.genLoad (decl);
  }
  public int getDepth () {
    return 0;
  }
  public String getXMLType () {
    return decl.getXMLType ();
  }
  public void genXML (java.io.PrintStream p, String prefix) {
    decl.genXML (p, prefix);
  }
  
  
}