parse.java

tiger编译器的Java实现

package Parse;


public class Parse {

  public ErrorMsg.ErrorMsg errorMsg;

  public Parse(String filename) {
       errorMsg = new ErrorMsg.ErrorMsg(filename);
       java.io.InputStream inp;
       try {inp=new java.io.FileInputStream(filename);
       } catch (java.io.FileNotFoundException e) {
	 throw new Error("File not found: " + filename);
       }
      
       Grm parser=new Grm(new Yylex(inp,errorMsg),errorMsg);

      try {
    	 
    	  Absyn.Print printer =new Absyn.Print(System.out);
    	  printer.prExp((Absyn.Exp)(parser.debug_parse().value),1);
    	//  System.out.println("dddddddddddddddddd");
      } catch (Throwable e) {
	e.printStackTrace();
	throw new Error(e.toString());
      } 
      finally {
         try {inp.close();} catch (java.io.IOException e) {}
      }
  }
}