primitivetypes.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 PrimitiveTypes {
  protected static final String ASTNode.PRIMITIVE_PACKAGE_NAME = "@primitive";

  private boolean Program.initPrimTypes = false;
  
  public void Program.addPrimitiveTypes() {
    if(!initPrimTypes) {
      initPrimTypes = true;
    
    CompilationUnit u = new CompilationUnit();
    u.setPackageDecl(PRIMITIVE_PACKAGE_NAME);
    addCompilationUnit(u);

    TypeDecl classDecl = generateUnknownType();
    u.addTypeDecl(classDecl);
    TypeDecl unknown = classDecl;

    classDecl = generatePrimitiveType(new BooleanType(), "boolean", unknown);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new DoubleType(), "double", unknown);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new FloatType(), "float", classDecl);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new LongType(), "long", classDecl);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new IntType(), "int", classDecl);
    u.addTypeDecl(classDecl);
    TypeDecl intDecl = classDecl;
    
    classDecl = generatePrimitiveType(new ShortType(), "short", classDecl);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new ByteType(), "byte", classDecl);
    u.addTypeDecl(classDecl);
    
    classDecl = generatePrimitiveType(new CharType(), "char", intDecl);
    u.addTypeDecl(classDecl);
    
    classDecl = new NullType();
    classDecl.setModifiers(new Modifiers(new List().add(new Modifier("public"))));
    classDecl.setID("null");
    u.addTypeDecl(classDecl);

    classDecl = new VoidType();
    classDecl.setModifiers(new Modifiers(new List().add(new Modifier("public"))));
    classDecl.setID("void");
    u.addTypeDecl(classDecl);

    }
  }

  public TypeDecl Program.generatePrimitiveType(PrimitiveType type, String name, TypeDecl superType) {
    type.setModifiers(new Modifiers(new List().add(new Modifier("public"))));
    type.setID(name);
    if(superType != null)
      type.setSuperClassAccess(superType.createQualifiedAccess());
    return type;
  }

  private TypeDecl Program.generateUnknownType() {
    ClassDecl classDecl = new UnknownType();
    classDecl.setModifiers(new Modifiers(new List().add(new Modifier("public"))));
    classDecl.setID("Unknown");
    MethodDecl methodDecl = new MethodDecl(
        new Modifiers(new List().add(
          new Modifier("public")
        )),
        new PrimitiveTypeAccess("Unknown"),
        "unknown",
        new List(),
        new List(),
        new Opt()
    );
    classDecl.addBodyDecl(methodDecl);
    FieldDeclaration fieldDecl = new FieldDeclaration(
        new Modifiers(new List().add(
          new Modifier("public")
        )),
        new PrimitiveTypeAccess("Unknown"),
        "unknown",
        new Opt()
    );
    classDecl.addBodyDecl(fieldDecl);   
    ConstructorDecl constrDecl = new ConstructorDecl(
      new Modifiers(new List().add(new Modifier("public"))),
      "Unknown",
      new List(),
      new List(),
      new Opt(),
      new Block()
    );
    classDecl.addBodyDecl(constrDecl);
      
    return classDecl;
  }
  
}