bytecodeconstant.jrag

JDK1.4编译器前端

/*
 * The JastAdd Extensible Java Compiler (http://jastadd.org) is covered
 * by the modified BSD License. You should have received a copy of the
 * modified BSD license with this compiler.
 * 
 * Copyright (c) 2005-2008, Torbjorn Ekman
 * All rights reserved.
 */

aspect BytecodeCONSTANT {
  class CONSTANT_Class_Info extends CONSTANT_Info {
    public int name_index;

    public CONSTANT_Class_Info(BytecodeParser parser) {
      super(parser);
      name_index = p.u2();
    }

    public String toString() {
      return "ClassInfo: " + name();
    }

    public String name() {
      String name = ((CONSTANT_Utf8_Info) this.p.constantPool[name_index]).string();
      //name = name.replaceAll("\\/", ".");
      name = name.replace('/', '.');
      return name;
    }

    public String simpleName() {
      String name = name();
      name = name.replace('$', '.');
      int pos = name.lastIndexOf('.');
      return name.substring(pos + 1, name.length());
    }

    public String packageDecl() {
      String name = name();
      name = name.replace('$', '.');
      int pos = name.lastIndexOf('.');
      if(pos == -1)
        return "";
      return name.substring(0, pos);
    }

    public Access access() {
      String name = name();
      name = name.replace('$', '.');
      int index = -1;
      int pos = 0;
      Access result = null;
      do {
        pos = name.indexOf('.', index+1);
        if(pos == -1)
          pos = name.length();
        String s = name.substring(index+1, pos);
        if(index == -1) {
          result = new ParseName(s);
        }
        else {
          result = result.qualifiesAccess(new ParseName(s));
        }
        index = pos;
      } while(pos != name.length());
      return result;
    }
  }

  class CONSTANT_Double_Info extends CONSTANT_Info {
    public double value;

    public CONSTANT_Double_Info(BytecodeParser parser) {
      super(parser);
      value = this.p.readDouble();
    }

    public String toString() {
      return "DoubleInfo: " + Double.toString(value);
    }

    public Expr expr() {
      return new DoubleLiteral(Double.toString(value));
    }
  }

  class CONSTANT_Fieldref_Info extends CONSTANT_Info {
    public int class_index;
    public int name_and_type_index;

    public CONSTANT_Fieldref_Info(BytecodeParser parser) {
      super(parser);
      class_index = p.u2();
      name_and_type_index = p.u2();
    }

    public String toString() {
      return "FieldRefInfo: " + p.constantPool[class_index] + " "
        + p.constantPool[name_and_type_index];
    }
  }

  class CONSTANT_Float_Info extends CONSTANT_Info {
    public float value;

    public CONSTANT_Float_Info(BytecodeParser parser) {
      super(parser);
      value = p.readFloat();
    }

    public String toString() {
      return "FloatInfo: " + Float.toString(value);
    }

    public Expr expr() {
      return new FloatingPointLiteral(Float.toString(value));
    }
  }

  class CONSTANT_Info {
    protected BytecodeParser p;
    public CONSTANT_Info(BytecodeParser parser) {
      p = parser;

    }
    public Expr expr() {
      throw new Error("CONSTANT_info.expr() should not be computed for " + getClass().getName());
    }
    public Expr exprAsBoolean() {
      return expr();
    }
  }

  class CONSTANT_Integer_Info extends CONSTANT_Info {
    public int value;

    public CONSTANT_Integer_Info(BytecodeParser parser) {
      super(parser);
      value = p.readInt();
    }

    public String toString() {
      return "IntegerInfo: " + Integer.toString(value);
    }

    public Expr expr() {
      //return new IntegerLiteral(Integer.toString(value));
      return new IntegerLiteral("0x" + Integer.toHexString(value));
    }
    public Expr exprAsBoolean() {
      return new BooleanLiteral(value == 0 ? "false" : "true");
    }
  }
  class CONSTANT_InterfaceMethodref_Info extends CONSTANT_Info {
    public int class_index;
    public int name_and_type_index;

    public CONSTANT_InterfaceMethodref_Info(BytecodeParser parser) {
      super(parser);
      class_index = p.u2();
      name_and_type_index = p.u2();
    }

    public String toString() {
      return "InterfaceMethodRefInfo: " + p.constantPool[class_index] + " "
        + p.constantPool[name_and_type_index];
    }
  }
  class CONSTANT_Long_Info extends CONSTANT_Info {
    public long value;

    public CONSTANT_Long_Info(BytecodeParser parser) {
      super(parser);
      value = p.readLong();
    }

    public String toString() {
      return "LongInfo: " + Long.toString(value);
    }

    public Expr expr() {
      //return new LongLiteral(Long.toString(value));
      return new LongLiteral("0x" + Long.toHexString(value));
    }
  }
  class CONSTANT_Methodref_Info extends CONSTANT_Info {
    public int class_index;
    public int name_and_type_index;

    public CONSTANT_Methodref_Info(BytecodeParser parser) {
      super(parser);
      class_index = p.u2();
      name_and_type_index = p.u2();
    }

    public String toString() {
      return "MethodRefInfo: " + class_index + " " + name_and_type_index;
    }
  }

  class CONSTANT_NameAndType_Info extends CONSTANT_Info {
    public int name_index;
    public int descriptor_index;

    public CONSTANT_NameAndType_Info(BytecodeParser parser) {
      super(parser);
      name_index = p.u2();
      descriptor_index = p.u2();
    }

    public String toString() {
      return "NameAndTypeInfo: " + name_index + " " + descriptor_index;
    }
  }

  class CONSTANT_String_Info extends CONSTANT_Info {
    public int string_index;

    public CONSTANT_String_Info(BytecodeParser parser) {
      super(parser);
      string_index = p.u2();
    }

    public Expr expr() {
      CONSTANT_Utf8_Info i = (CONSTANT_Utf8_Info)p.constantPool[string_index];
      return new StringLiteral(i.string);
    }

    public String toString() {
      return "StringInfo: " + p.constantPool[string_index];
    }
  }

  class CONSTANT_Utf8_Info extends CONSTANT_Info {
    public String string;

    public CONSTANT_Utf8_Info(BytecodeParser parser) {
      super(parser);
      string = p.readUTF();
    }

    public String toString() {
      return "Utf8Info: " + string;
    }

    public Expr expr() {
      return new StringLiteral(string);
    }

    public String string() {
      return string;
    }
  }






}