import com.sun.tools.javac.comp.Infer; //导入依赖的package包/类
protected TypeHarness() {
    context = new Context();
    JavacFileManager.preRegister(context);
    MyAttr.preRegister(context);
    tool = new ReusableJavaCompiler(context);
    types = Types.instance(context);
    infer = Infer.instance(context);
    chk = Check.instance(context);
    predef = Symtab.instance(context);
    names = Names.instance(context);
    fac = new Factory();
}
 

import com.sun.tools.javac.comp.Infer; //导入依赖的package包/类
public void createNode(Attr attr, Env<AttrContext> env) {
	Reifier reifier = Reifier.getInstance();
	node = reifier.reifyExpression(stringRepresentation);
	
	Env<AttrContext> localEnv = env.dup(node, env.info.dup()); 
	attr.attribExpr(node, localEnv, Infer.anyPoly);
}
 

import com.sun.tools.javac.comp.Infer; //导入依赖的package包/类
public Infer infer() {
  return Infer.instance(context);
}