+++ /dev/null
-/*
- * Copyright (C) 2008 Google Inc.
- *
- * 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 com.google.gson;
-
-import java.math.BigDecimal;
-import java.math.BigInteger;
-
-import com.google.gson.internal.$Gson$Preconditions;
-import com.google.gson.internal.LazilyParsedNumber;
-
-/**
- * A class representing a Json primitive value. A primitive value
- * is either a String, a Java primitive, or a Java primitive
- * wrapper type.
- *
- * @author Inderjeet Singh
- * @author Joel Leitch
- */
-public final class JsonPrimitive extends JsonElement {
-
- private static final Class<?>[] PRIMITIVE_TYPES = { int.class, long.class, short.class,
- float.class, double.class, byte.class, boolean.class, char.class, Integer.class, Long.class,
- Short.class, Float.class, Double.class, Byte.class, Boolean.class, Character.class };
-
- private Object value;
-
- /**
- * Create a primitive containing a boolean value.
- *
- * @param bool the value to create the primitive with.
- */
- public JsonPrimitive(Boolean bool) {
- setValue(bool);
- }
-
- /**
- * Create a primitive containing a {@link Number}.
- *
- * @param number the value to create the primitive with.
- */
- public JsonPrimitive(Number number) {
- setValue(number);
- }
-
- /**
- * Create a primitive containing a String value.
- *
- * @param string the value to create the primitive with.
- */
- public JsonPrimitive(String string) {
- setValue(string);
- }
-
- /**
- * Create a primitive containing a character. The character is turned into a one character String
- * since Json only supports String.
- *
- * @param c the value to create the primitive with.
- */
- public JsonPrimitive(Character c) {
- setValue(c);
- }
-
- /**
- * Create a primitive using the specified Object. It must be an instance of {@link Number}, a
- * Java primitive type, or a String.
- *
- * @param primitive the value to create the primitive with.
- */
- JsonPrimitive(Object primitive) {
- setValue(primitive);
- }
-
- @Override
- JsonPrimitive deepCopy() {
- return this;
- }
-
- void setValue(Object primitive) {
- if (primitive instanceof Character) {
- // convert characters to strings since in JSON, characters are represented as a single
- // character string
- char c = ((Character) primitive).charValue();
- this.value = String.valueOf(c);
- } else {
- $Gson$Preconditions.checkArgument(primitive instanceof Number
- || isPrimitiveOrString(primitive));
- this.value = primitive;
- }
- }
-
- /**
- * Check whether this primitive contains a boolean value.
- *
- * @return true if this primitive contains a boolean value, false otherwise.
- */
- public boolean isBoolean() {
- return value instanceof Boolean;
- }
-
- /**
- * convenience method to get this element as a {@link Boolean}.
- *
- * @return get this element as a {@link Boolean}.
- */
- @Override
- Boolean getAsBooleanWrapper() {
- return (Boolean) value;
- }
-
- /**
- * convenience method to get this element as a boolean value.
- *
- * @return get this element as a primitive boolean value.
- */
- @Override
- public boolean getAsBoolean() {
- if (isBoolean()) {
- return getAsBooleanWrapper().booleanValue();
- } else {
- // Check to see if the value as a String is "true" in any case.
- return Boolean.parseBoolean(getAsString());
- }
- }
-
- /**
- * Check whether this primitive contains a Number.
- *
- * @return true if this primitive contains a Number, false otherwise.
- */
- public boolean isNumber() {
- return value instanceof Number;
- }
-
- /**
- * convenience method to get this element as a Number.
- *
- * @return get this element as a Number.
- * @throws NumberFormatException if the value contained is not a valid Number.
- */
- @Override
- public Number getAsNumber() {
- return value instanceof String ? new LazilyParsedNumber((String) value) : (Number) value;
- }
-
- /**
- * Check whether this primitive contains a String value.
- *
- * @return true if this primitive contains a String value, false otherwise.
- */
- public boolean isString() {
- return value instanceof String;
- }
-
- /**
- * convenience method to get this element as a String.
- *
- * @return get this element as a String.
- */
- @Override
- public String getAsString() {
- if (isNumber()) {
- return getAsNumber().toString();
- } else if (isBoolean()) {
- return getAsBooleanWrapper().toString();
- } else {
- return (String) value;
- }
- }
-
- /**
- * convenience method to get this element as a primitive double.
- *
- * @return get this element as a primitive double.
- * @throws NumberFormatException if the value contained is not a valid double.
- */
- @Override
- public double getAsDouble() {
- return isNumber() ? getAsNumber().doubleValue() : Double.parseDouble(getAsString());
- }
-
- /**
- * convenience method to get this element as a {@link BigDecimal}.
- *
- * @return get this element as a {@link BigDecimal}.
- * @throws NumberFormatException if the value contained is not a valid {@link BigDecimal}.
- */
- @Override
- public BigDecimal getAsBigDecimal() {
- return value instanceof BigDecimal ? (BigDecimal) value : new BigDecimal(value.toString());
- }
-
- /**
- * convenience method to get this element as a {@link BigInteger}.
- *
- * @return get this element as a {@link BigInteger}.
- * @throws NumberFormatException if the value contained is not a valid {@link BigInteger}.
- */
- @Override
- public BigInteger getAsBigInteger() {
- return value instanceof BigInteger ?
- (BigInteger) value : new BigInteger(value.toString());
- }
-
- /**
- * convenience method to get this element as a float.
- *
- * @return get this element as a float.
- * @throws NumberFormatException if the value contained is not a valid float.
- */
- @Override
- public float getAsFloat() {
- return isNumber() ? getAsNumber().floatValue() : Float.parseFloat(getAsString());
- }
-
- /**
- * convenience method to get this element as a primitive long.
- *
- * @return get this element as a primitive long.
- * @throws NumberFormatException if the value contained is not a valid long.
- */
- @Override
- public long getAsLong() {
- return isNumber() ? getAsNumber().longValue() : Long.parseLong(getAsString());
- }
-
- /**
- * convenience method to get this element as a primitive short.
- *
- * @return get this element as a primitive short.
- * @throws NumberFormatException if the value contained is not a valid short value.
- */
- @Override
- public short getAsShort() {
- return isNumber() ? getAsNumber().shortValue() : Short.parseShort(getAsString());
- }
-
- /**
- * convenience method to get this element as a primitive integer.
- *
- * @return get this element as a primitive integer.
- * @throws NumberFormatException if the value contained is not a valid integer.
- */
- @Override
- public int getAsInt() {
- return isNumber() ? getAsNumber().intValue() : Integer.parseInt(getAsString());
- }
-
- @Override
- public byte getAsByte() {
- return isNumber() ? getAsNumber().byteValue() : Byte.parseByte(getAsString());
- }
-
- @Override
- public char getAsCharacter() {
- return getAsString().charAt(0);
- }
-
- private static boolean isPrimitiveOrString(Object target) {
- if (target instanceof String) {
- return true;
- }
-
- Class<?> classOfPrimitive = target.getClass();
- for (Class<?> standardPrimitive : PRIMITIVE_TYPES) {
- if (standardPrimitive.isAssignableFrom(classOfPrimitive)) {
- return true;
- }
- }
- return false;
- }
-
- @Override
- public int hashCode() {
- if (value == null) {
- return 31;
- }
- // Using recommended hashing algorithm from Effective Java for longs and doubles
- if (isIntegral(this)) {
- long value = getAsNumber().longValue();
- return (int) (value ^ (value >>> 32));
- }
- if (value instanceof Number) {
- long value = Double.doubleToLongBits(getAsNumber().doubleValue());
- return (int) (value ^ (value >>> 32));
- }
- return value.hashCode();
- }
-
- @Override
- public boolean equals(Object obj) {
- if (this == obj) {
- return true;
- }
- if (obj == null || getClass() != obj.getClass()) {
- return false;
- }
- JsonPrimitive other = (JsonPrimitive)obj;
- if (value == null) {
- return other.value == null;
- }
- if (isIntegral(this) && isIntegral(other)) {
- return getAsNumber().longValue() == other.getAsNumber().longValue();
- }
- if (value instanceof Number && other.value instanceof Number) {
- double a = getAsNumber().doubleValue();
- // Java standard types other than double return true for two NaN. So, need
- // special handling for double.
- double b = other.getAsNumber().doubleValue();
- return a == b || (Double.isNaN(a) && Double.isNaN(b));
- }
- return value.equals(other.value);
- }
-
- /**
- * Returns true if the specified number is an integral type
- * (Long, Integer, Short, Byte, BigInteger)
- */
- private static boolean isIntegral(JsonPrimitive primitive) {
- if (primitive.value instanceof Number) {
- Number number = (Number) primitive.value;
- return number instanceof BigInteger || number instanceof Long || number instanceof Integer
- || number instanceof Short || number instanceof Byte;
- }
- return false;
- }
-}
projects / unical.git / blobdiff