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add json module json
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commit
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@ -16,4 +16,5 @@ include 'utils:mail'
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include 'utils:csv'
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include 'utils:TrafficForward'
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include 'utils:performance-test'
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include 'utils:math'
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include 'utils:math'
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include 'utils:json'
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3
utils/json/build.gradle
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3
utils/json/build.gradle
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@ -0,0 +1,3 @@
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dependencies {
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compile project(":")
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}
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213
utils/json/src/main/kotlin/cn/tursom/utils/json/Json.kt
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213
utils/json/src/main/kotlin/cn/tursom/utils/json/Json.kt
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@ -0,0 +1,213 @@
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package cn.tursom.utils.json
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import com.sun.org.apache.xalan.internal.lib.ExsltMath.power
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import java.lang.RuntimeException
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object Json {
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class JsonFormatException(message: String? = null) : RuntimeException(message) {
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internal constructor(content: JsonParseContent) : this("${content.json}[${content.index}]")
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}
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fun parse(json: String): Any? {
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val content = JsonParseContent(json)
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val parse = parse(content)
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jumpWhitespace(content)
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if (content.index != json.length) throw JsonFormatException(json)
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return parse
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}
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internal data class JsonParseContent(inline val json: String, inline var index: Int = 0)
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private fun parse(content: JsonParseContent): Any? {
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jumpWhitespace(content)
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return when (content.json[content.index]) {
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'{' -> parseObj(content)
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'[' -> parseArray(content)
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'"' -> parseString(content)
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'+', '-', in '0'..'9' -> parseNumber(content)
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't', 'f' -> parseBoolean(content)
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'n' -> parseNull(content)
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else -> throw JsonFormatException(content)
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}
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseNull(content: JsonParseContent) = if (content.json.startsWith("null", content.index)) {
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content.index += 4
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null
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} else throw JsonFormatException(content)
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@Suppress("ControlFlowWithEmptyBody", "NOTHING_TO_INLINE")
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private inline fun parseBoolean(content: JsonParseContent) = when {
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content.json.startsWith("true", content.index) -> {
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content.index += 4
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true
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}
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content.json.startsWith("false", content.index) -> {
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content.index += 5
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false
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}
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else -> throw JsonFormatException(content)
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun jumpWhitespaceLoopCondition(json: String, index: Int) = index < json.length && json[index] in " \t\r\n"
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@Suppress("NOTHING_TO_INLINE")
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private inline fun jumpWhitespace(content: JsonParseContent) {
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@Suppress("ControlFlowWithEmptyBody")
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if (jumpWhitespaceLoopCondition(content.json, content.index)) while (jumpWhitespaceLoopCondition(content.json, ++content.index));
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun charToInt(char: Char): Int {
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val indexOf = char - '0'
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if (indexOf < 0 || indexOf > 9) throw JsonFormatException("$char is not an number")
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return indexOf
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseInt(content: JsonParseContent): Number {
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var number = charToInt(content.json[content.index]).toLong()
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while (++content.index < content.json.length && content.json[content.index] in '0'..'9') {
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number = number * 10 + charToInt(content.json[content.index])
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}
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return if (number <= Int.MAX_VALUE) number.toInt() else number
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseNumber(content: JsonParseContent): Number {
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val negative = content.json[content.index] == '-'
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if (negative || content.json[content.index] == '+') content.index++
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var number: Number = when (content.json[content.index]) {
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in '0'..'9' -> parseInt(content)
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else -> throw JsonFormatException(content)
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}
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if (content.index < content.json.length && content.json[content.index] == '.') {
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if (++content.index >= content.json.length) throw JsonFormatException(content)
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var base = 0.1
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var double = charToInt(content.json[content.index]) * base
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while (++content.index < content.json.length && content.json[content.index] in '0'..'9') {
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base *= 0.1
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double += charToInt(content.json[content.index]) * base
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}
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number = number.toDouble() + double
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}
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if (content.index < content.json.length && content.json[content.index] in "eE") {
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val powerNegative = when (content.json[++content.index]) {
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'-' -> true
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'+' -> false
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else -> {
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content.index--
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false
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}
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}
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content.index++
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number = number.toDouble() * power(10.0, parseInt(content).toLong() * if (powerNegative) -1.0 else 1.0)
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}
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return if (negative) when (number) {
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is Int -> -number
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is Long -> -number
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else -> -number.toDouble()
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} else number
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseString(content: JsonParseContent): String {
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if (content.json[content.index++] != '"') throw JsonFormatException("string not begin with '\"'")
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val builder = StringBuilder()
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while (content.index < content.json.length) when (content.json[content.index]) {
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'\\' -> {
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when (content.json[++content.index]) {
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'b' -> builder.append('\b')
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'f' -> builder.append('\u000C')
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'n' -> builder.append('\n')
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'r' -> builder.append('\r')
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't' -> builder.append('\t')
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'u' -> {
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var char = 0
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repeat(4) {
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val indexOf = "0123456789abcdef".indexOf(content.json[++content.index].toLowerCase())
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if (indexOf < 0) throw JsonFormatException(content)
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char = char * 16 + indexOf
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}
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builder.append(char.toChar())
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}
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else -> builder.append(content.json[content.index])
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}
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content.index++
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}
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'"' -> {
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content.index++
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return builder.toString()
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}
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else -> builder.append(content.json[content.index++])
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}
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throw JsonFormatException(content)
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseObj(content: JsonParseContent): Map<String, Any?> {
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if (content.json[content.index++] != '{') throw JsonFormatException(content)
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jumpWhitespace(content)
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if (content.json[content.index] == '}') {
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content.index++
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return emptyMap()
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}
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val map = HashMap<String, Any?>()
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while (true) {
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jumpWhitespace(content)
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val key = parseString(content)
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jumpWhitespace(content)
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if (content.json[content.index++] != ':') throw JsonFormatException(content)
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map[key] = parse(content)
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jumpWhitespace(content)
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when (content.json[content.index++]) {
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',' -> continue
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'}' -> break
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else -> throw JsonFormatException("json object not ends with '}'")
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}
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}
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return map
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}
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@Suppress("NOTHING_TO_INLINE")
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private inline fun parseArray(content: JsonParseContent): List<Any?> {
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if (content.json[content.index++] != '[') throw JsonFormatException(content)
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jumpWhitespace(content)
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if (content.json[content.index] == ']') {
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content.index++
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return emptyList()
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}
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val array = ArrayList<Any?>()
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while (true) {
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array.add(parse(content))
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jumpWhitespace(content)
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if (content.index >= content.json.length) throw JsonFormatException(content)
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when (content.json[content.index++]) {
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',' -> continue
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']' -> break
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else -> throw JsonFormatException(content)
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}
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}
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return array
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}
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}
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//fun main() {
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// println(Json.parse(" null "))
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// println(Json.parse(" true "))
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// println(Json.parse(" false "))
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// println(Json.parse(" 123 "))
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// println(Json.parse(" -123 "))
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// println(Json.parse(" 123.0 "))
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// println(Json.parse(" 123.0 "))
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// println(Json.parse(" 123e2 "))
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// println(Json.parse(" 123e10 "))
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// println(Json.parse(" -123.5e10 "))
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// println(Json.parse(" \"bb-12\\t3\\\".5e10aa\" "))
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// println(Json.parse(" {} "))
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// println(Json.parse(" {\"a\":3, \"c\": {}} "))
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// println(Json.parse("[1,3, 4 ,\"cc\\u0041\" , true , false , null , {}, {\"a\":\"b\"} , [ ] , [] , {\"a\":3, \"c\": {}, \"b\":[]}]"))
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// println(Json.parse(" [1,3,4] "))
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//}
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