Java JCParens类代码示例

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override public void visitDoLoop(JCDoWhileLoop tree) {
	aPrint("do ");
	if (tree.body instanceof JCBlock) {
		println("{");
		indent++;
		print(((JCBlock) tree.body).stats, "");
		indent--;
		aPrint("}");
		
	} else print(tree.body);
	print(" while ");
	if (tree.cond instanceof JCParens) {
		print(tree.cond);
	} else {
		print("(");
		print(tree.cond);
		print(")");
	}
	println(";", tree);
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
/**
 * This function walks into a tree with nodes of type JCBinary to search for 
 * a string as one of the elements of the tree.
 * @param toTest The String searched as Element in the tree.
 * @param expression The bifurcation tree searched.
 * @return True if the string was found, or False.
 */
private boolean isThereInMiniTree(String toTest, JCTree expression) {
	if(expression instanceof JCParens){
		if(isThereInMiniTree(toTest, ((JCParens) expression).expr))
			return true;
	} else if(expression instanceof JCIdent){
		if(((JCIdent) expression).name.toString().equals(toTest))
			return true;
	} else if(expression instanceof JCBinary){
		if(isThereInMiniTree(toTest, ((JCBinary) expression).rhs))
			return true;
		if(isThereInMiniTree(toTest, ((JCBinary) expression).lhs))
			return true;
	}
	return false;
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
/**
 * Verify if the boolean expression have a true value despite of any variable values. 
 * @param expression The boolean expression examined.
 * @return 1 When the expression is always true.
 */
private int hasTrueValue(JCTree expression) {
	if(expression instanceof JCParens){
		if(hasTrueValue(((JCParens)expression).expr) != 0)
			return 1;
	}else if(expression instanceof JCLiteral){
		if(((JCLiteral) expression).value == null)
			return VAR_FALSE_VALUE;
		return (int) ((JCLiteral) expression).value;
	}else if(expression instanceof JmlSingleton){
		return 1;
	}else if(expression instanceof JCBinary){
		return resolveBooleanOperations(expression);
	}
	return VAR_FALSE_VALUE;
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override
public Description matchWhileLoop(WhileLoopTree tree, VisitorState state) {
  JCWhileLoop whileLoop = (JCWhileLoop) tree;
  JCExpression whileExpression = ((JCParens) whileLoop.getCondition()).getExpression();
  if (whileExpression instanceof MethodInvocationTree) {
    MethodInvocationTree methodInvocation = (MethodInvocationTree) whileExpression;
    if (methodSelect(isDescendantOfMethod("java.util.Iterator", "hasNext()")).matches(
        methodInvocation, state)) {
      IdentifierTree identifier = getIncrementedIdentifer(extractSingleStatement(whileLoop.body));
      if (identifier != null) {
        return describeMatch(tree, new SuggestedFix());
      }
    }
  }
  return Description.NO_MATCH;
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
protected int diffParens(JCParens oldT, JCParens newT, int[] bounds) {
    int localPointer = bounds[0];
    copyTo(localPointer, getCommentCorrectedOldPos(oldT.expr));
    localPointer = diffTree(oldT.expr, newT.expr, getBounds(oldT.expr));
    copyTo(localPointer, bounds[1]);
    return bounds[1];
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override public void visitWhileLoop(JCWhileLoop tree) {
	aPrint("while ");
	if (tree.cond instanceof JCParens) {
		print(tree.cond);
	} else {
		print("(");
		print(tree.cond);
		print(")");
	}
	print(" ");
	print(tree.body);
	// make sure to test while (true) ; and while(true){} and while(true) x = 5;
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override public void visitIf(JCIf tree) {
	aPrint("if ");
	if (tree.cond instanceof JCParens) {
		print(tree.cond);
	} else {
		print("(");
		print(tree.cond);
		print(")");
	}
	print(" ");
	if (tree.thenpart instanceof JCBlock) {
		println("{");
		indent++;
		print(((JCBlock) tree.thenpart).stats, "");
		indent--;
		if (tree.elsepart == null) {
			aPrintln("}", tree);
		} else {
			aPrint("}");
		}
	} else {
		print(tree.thenpart);
	}
	if (tree.elsepart != null) {
		aPrint(" else ");
		print(tree.elsepart);
	}
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override public void visitSynchronized(JCSynchronized tree) {
	aPrint("synchronized ");
	if (tree.lock instanceof JCParens) {
		print(tree.lock);
	} else {
		print("(");
		print(tree.lock);
		print(")");
	}
	print(" ");
	print(tree.body);
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override public void visitSwitch(JCSwitch tree) {
	aPrint("switch ");
	if (tree.selector instanceof JCParens) {
		print(tree.selector);
	} else {
		print("(");
		print(tree.selector);
		print(")");
	}
	println(" {");
	print(tree.cases, "\n");
	aPrintln("}", tree);
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
/**
 * Checks if the statement is of the form 'if (x == null) {throw WHATEVER;},
 * where the block braces are optional. If it is of this form, returns "x".
 * If it is not of this form, returns null.
 */
public String returnVarNameIfNullCheck(JCStatement stat) {
	if (!(stat instanceof JCIf)) return null;
	
	/* Check that the if's statement is a throw statement, possibly in a block. */ {
		JCStatement then = ((JCIf) stat).thenpart;
		if (then instanceof JCBlock) {
			List<JCStatement> stats = ((JCBlock) then).stats;
			if (stats.length() == 0) return null;
			then = stats.get(0);
		}
		if (!(then instanceof JCThrow)) return null;
	}
	
	/* Check that the if's conditional is like 'x == null'. Return from this method (don't generate
	   a nullcheck) if 'x' is equal to our own variable's name: There's already a nullcheck here. */ {
		JCExpression cond = ((JCIf) stat).cond;
		while (cond instanceof JCParens) cond = ((JCParens) cond).expr;
		if (!(cond instanceof JCBinary)) return null;
		JCBinary bin = (JCBinary) cond;
		if (!CTC_EQUAL.equals(treeTag(bin))) return null;
		if (!(bin.lhs instanceof JCIdent)) return null;
		if (!(bin.rhs instanceof JCLiteral)) return null;
		if (!CTC_BOT.equals(typeTag(bin.rhs))) return null;
		return ((JCIdent) bin.lhs).name.toString();
	}
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
public void visitParens(JCParens that) {
    try {
        print("JCParens:");
    } catch (Exception e) {
    }
    super.visitParens(that);
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
public void visitParens(JCParens tree) {
	try {
		print("(");
		printExpr(tree.expr);
		print(")");
	} catch (IOException e) {
		throw new UncheckedIOException(e);
	}
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
public void visitParens(JCParens tree) {
    try {
        print("(");
        printExpr(tree.expr);
        print(")");
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
public void visitParens(JCParens tree) {
    Type owntype = attribTree(tree.expr, env, pkind, pt);
    result = check(tree, owntype, pkind, pkind, pt);
    Symbol sym = TreeInfo.symbol(tree);
    if (sym != null && (sym.kind&(TYP|PCK)) != 0)
        log.error(tree.pos(), "illegal.start.of.type");
}
 

import com.sun.tools.javac.tree.JCTree.JCParens; //导入依赖的package包/类
@Override
public void visitParens(JCParens that) {
    processArg(that, speculativeTree -> new ParensType(that, env, speculativeTree));
}