org.apache.ibatis.ognl.ASTConst Maven / Gradle / Ivy
//--------------------------------------------------------------------------
// Copyright (c) 1998-2004, Drew Davidson and Luke Blanshard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// Neither the name of the Drew Davidson nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
// DAMAGE.
//--------------------------------------------------------------------------
package org.apache.ibatis.ognl;
import java.math.BigDecimal;
import java.math.BigInteger;
/**
* @author Luke Blanshard ([email protected])
* @author Drew Davidson ([email protected])
*/
class ASTConst extends SimpleNode {
private Object value;
public ASTConst(int id) {
super(id);
}
public ASTConst(OgnlParser p, int id) {
super(p, id);
}
/**
* Called from parser actions.
*/
void setValue(Object value) {
this.value = value;
}
public Object getValue() {
return value;
}
protected Object getValueBody(OgnlContext context, Object source) throws OgnlException {
return this.value;
}
public boolean isNodeConstant(OgnlContext context) throws OgnlException {
return true;
}
public String getEscapedChar(char ch) {
String result;
switch (ch) {
case '\b':
result = "\b";
break;
case '\t':
result = "\\t";
break;
case '\n':
result = "\\n";
break;
case '\f':
result = "\\f";
break;
case '\r':
result = "\\r";
break;
case '\"':
result = "\\\"";
break;
case '\'':
result = "\\\'";
break;
case '\\':
result = "\\\\";
break;
default:
if (Character.isISOControl(ch) || (ch > 255)) {
String hc = Integer.toString((int) ch, 16);
int hcl = hc.length();
result = "\\u";
if (hcl < 4) {
if (hcl == 3) {
result = result + "0";
} else {
if (hcl == 2) {
result = result + "00";
} else {
result = result + "000";
}
}
}
result = result + hc;
} else {
result = new String(ch + "");
}
break;
}
return result;
}
public String getEscapedString(String value) {
StringBuffer result = new StringBuffer();
for (int i = 0, icount = value.length(); i < icount; i++) {
result.append(getEscapedChar(value.charAt(i)));
}
return new String(result);
}
public String toString() {
String result;
if (value == null) {
result = "null";
} else {
if (value instanceof String) {
result = '\"' + getEscapedString(value.toString()) + '\"';
} else {
if (value instanceof Character) {
result = '\'' + getEscapedChar(((Character) value).charValue()) + '\'';
} else {
result = value.toString();
if (value instanceof Long) {
result = result + "L";
} else {
if (value instanceof BigDecimal) {
result = result + "B";
} else {
if (value instanceof BigInteger) {
result = result + "H";
} else {
if (value instanceof Node) {
result = ":[ " + result + " ]";
}
}
}
}
}
}
}
return result;
}
}