/*
* Copyright 2003-2011 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package groovy.json;
import java.math.BigDecimal;
import java.math.BigInteger;
import static groovy.json.JsonTokenType.*;
/**
* A JSON token, with a type, line / column information, and the text of that token.
*
* @author Guillaume Laforge
* @since 1.8.0
*/
public class JsonToken {
private static final BigInteger MAX_LONG = BigInteger.valueOf(Long.MAX_VALUE);
private static final BigInteger MIN_LONG = BigInteger.valueOf(Long.MIN_VALUE);
private static final BigInteger MAX_INTEGER = BigInteger.valueOf(Integer.MAX_VALUE);
private static final BigInteger MIN_INTEGER = BigInteger.valueOf(Integer.MIN_VALUE);
private static final BigDecimal MAX_DOUBLE = new BigDecimal(String.valueOf(Double.MAX_VALUE));
private static final BigDecimal MIN_DOUBLE = MAX_DOUBLE.negate();
private static final BigDecimal MAX_FLOAT = new BigDecimal(String.valueOf(Float.MAX_VALUE));
private static final BigDecimal MIN_FLOAT = MAX_FLOAT.negate();
/** Start line position */
private long startLine;
/** End line position */
private long endLine;
/** Start column position */
private long startColumn;
/** End column position */
private long endColumn;
/** The type of the token */
private JsonTokenType type;
/** The text of that token */
private String text;
/**
* Return the value represented by this token (ie. a number, a string, a boolean or null).
* For numbers, the most appropriate type is returned (Float, Double, BigDecimal for decimal numbers,
* and Integer, Long and BigInteger for integral numbers).
*
* @return the represented value
*/
public Object getValue() {
if (type == STRING) {
if (text.length() == 2) {
return "";
} else {
return text.substring(1, text.length() - 1);
}
} else if (type == NUMBER) {
if (text.contains(".") || text.contains("e") || text.contains("E")) {
// a decimal number
BigDecimal v = new BigDecimal(text);
if(v.compareTo(MAX_FLOAT) <= 0 && v.compareTo(MIN_FLOAT) >= 0) {
return new Float(text);
} else if(v.compareTo(MAX_DOUBLE) <= 0 && v.compareTo(MIN_DOUBLE) >= 0) {
return new Double(text);
} else {
return v;
}
} else {
// an integer number
BigInteger v = new BigInteger(text);
if(v.compareTo(MAX_INTEGER) <= 0 && v.compareTo(MIN_INTEGER) >= 0 ) {
return v.intValue();
} else if (v.compareTo(MAX_LONG) <= 0 && v.compareTo(MIN_LONG) >= 0 ) {
return v.longValue();
} else {
return v;
}
}
} else if (type == TRUE) {
return true;
} else if (type == FALSE) {
return false;
} else if (type == NULL) {
return null;
} else {
throw new JsonException(
"No appropriate value represented by '" + text +
"' on line: " + startLine + ", column: " + startColumn
);
}
}
public String toString() {
return text + " (" + type + ") [" + startLine + ":" + startColumn + "-" + endLine + ":" + endColumn + "]";
}
public long getStartLine() {
return startLine;
}
public void setStartLine(long startLine) {
this.startLine = startLine;
}
public long getEndLine() {
return endLine;
}
public void setEndLine(long endLine) {
this.endLine = endLine;
}
public long getStartColumn() {
return startColumn;
}
public void setStartColumn(long startColumn) {
this.startColumn = startColumn;
}
public long getEndColumn() {
return endColumn;
}
public void setEndColumn(long endColumn) {
this.endColumn = endColumn;
}
public JsonTokenType getType() {
return this.type;
}
public void setType(JsonTokenType type) {
this.type = type;
}
public void setText(String text) {
this.text = text;
}
public String getText() {
return this.text;
}
}