org.testifyproject.guava.common.primitives.ParseRequest Maven / Gradle / Ivy
/*
* Copyright (C) 2011 The Guava 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 org.testifyproject.guava.common.primitives;
import org.testifyproject.guava.common.annotations.GwtCompatible;
/**
* A string to be parsed as a number and the radix to interpret it in.
*/
@GwtCompatible
final class ParseRequest {
final String rawValue;
final int radix;
private ParseRequest(String rawValue, int radix) {
this.rawValue = rawValue;
this.radix = radix;
}
static ParseRequest fromString(String stringValue) {
if (stringValue.length() == 0) {
throw new NumberFormatException("empty string");
}
// Handle radix specifier if present
String rawValue;
int radix;
char firstChar = stringValue.charAt(0);
if (stringValue.startsWith("0x") || stringValue.startsWith("0X")) {
rawValue = stringValue.substring(2);
radix = 16;
} else if (firstChar == '#') {
rawValue = stringValue.substring(1);
radix = 16;
} else if (firstChar == '0' && stringValue.length() > 1) {
rawValue = stringValue.substring(1);
radix = 8;
} else {
rawValue = stringValue;
radix = 10;
}
return new ParseRequest(rawValue, radix);
}
}