58 lines
1.6 KiB
Java
58 lines
1.6 KiB
Java
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/*
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* Copyright (C) 2011 The Guava Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
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* in compliance with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the
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* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.common.primitives;
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import com.google.common.annotations.GwtCompatible;
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/**
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* A string to be parsed as a number and the radix to interpret it in.
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*/
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@GwtCompatible
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final class ParseRequest {
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final String rawValue;
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final int radix;
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private ParseRequest(String rawValue, int radix) {
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this.rawValue = rawValue;
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this.radix = radix;
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}
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static ParseRequest fromString(String stringValue) {
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if (stringValue.length() == 0) {
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throw new NumberFormatException("empty string");
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}
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// Handle radix specifier if present
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String rawValue;
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int radix;
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char firstChar = stringValue.charAt(0);
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if (stringValue.startsWith("0x") || stringValue.startsWith("0X")) {
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rawValue = stringValue.substring(2);
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radix = 16;
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} else if (firstChar == '#') {
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rawValue = stringValue.substring(1);
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radix = 16;
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} else if (firstChar == '0' && stringValue.length() > 1) {
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rawValue = stringValue.substring(1);
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radix = 8;
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} else {
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rawValue = stringValue;
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radix = 10;
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}
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return new ParseRequest(rawValue, radix);
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}
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}
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