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@ -6,8 +6,10 @@ class RuleAnalyzer(data: String) { |
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private var queue: String = data //被处理字符串 |
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private var queue: String = data //被处理字符串 |
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private var pos = 0 //处理到的位置 |
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private var pos = 0 //处理到的位置 |
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private var rule = arrayOf<String>() |
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private var start = 0 //每次处理字段的开始 |
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private var start = 0 //每次处理字段的开始 |
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private var startX = 0 //规则的开始 |
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private var step:Int = 0 //分割字符的长度 |
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private var step:Int = 0 //分割字符的长度 |
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var elementsType = "" |
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var elementsType = "" |
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@ -17,6 +19,11 @@ class RuleAnalyzer(data: String) { |
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return queue.substring(start+stepStart,pos-stepEnd) //当前平衡字段 |
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return queue.substring(start+stepStart,pos-stepEnd) //当前平衡字段 |
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} |
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} |
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fun trim(){ // 修剪当前规则之前的"@"或者空白符 |
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while (queue[pos] == '@' || queue[pos] < '!') pos++ |
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} |
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//将pos重置为0,方便复用 |
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//将pos重置为0,方便复用 |
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fun reSetPos() { |
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fun reSetPos() { |
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pos = 0 |
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pos = 0 |
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@ -34,21 +41,6 @@ class RuleAnalyzer(data: String) { |
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return queue.substring(start) |
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return queue.substring(start) |
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} |
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} |
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/** |
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* pos位置回退 |
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*/ |
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fun back(num :Int = 0) { |
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if(num == 0)pos = start //回退 |
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else pos -= num |
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} |
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/** |
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* pos位置后移 |
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*/ |
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fun advance(num :Int = 1) { |
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pos+=num |
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} |
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/** |
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/** |
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* 是否已无剩余字符? |
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* 是否已无剩余字符? |
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* @return 若剩余字串中已无字符则返回true |
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* @return 若剩余字串中已无字符则返回true |
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@ -109,9 +101,8 @@ class RuleAnalyzer(data: String) { |
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while (pos != queue.length) { |
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while (pos != queue.length) { |
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for (s in seq) { |
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for (s in seq) { |
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if (matches(s)) { |
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if (queue.regionMatches(pos, s, 0, s.length)) { |
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step = s.length //间隔数 |
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step = s.length //间隔数 |
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start = this.pos //匹配成功, 设置规则下次起始位置 |
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this.pos = pos //匹配成功, 同步处理位置到类 |
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this.pos = pos //匹配成功, 同步处理位置到类 |
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return true //匹配就返回 true |
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return true //匹配就返回 true |
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} |
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} |
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@ -163,7 +154,7 @@ class RuleAnalyzer(data: String) { |
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var commits = false //多行注释 |
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var commits = false //多行注释 |
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do { |
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do { |
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if (isEmpty) break |
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if (pos == queue.length) break |
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var c = queue[pos++] |
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var c = queue[pos++] |
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if (c != '\\') { //非转义字符 |
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if (c != '\\') { //非转义字符 |
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if (c == '\'' && !commits && !commit && !regex && !inDoubleQuote && !inOtherQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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if (c == '\'' && !commits && !commit && !regex && !inDoubleQuote && !inOtherQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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@ -192,22 +183,23 @@ class RuleAnalyzer(data: String) { |
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']' -> bracketsDepth-- //闭合一层嵌套[] |
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']' -> bracketsDepth-- //闭合一层嵌套[] |
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} |
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} |
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} |
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}else if(c == '\n') commit = false |
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if (commits || commit || regex || inSingleQuote || inDoubleQuote || inOtherQuote) continue //语法单元未匹配结束,直接进入下个循环 |
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if (commits || commit || regex || inSingleQuote || inDoubleQuote || inOtherQuote) continue //语法单元未匹配结束,直接进入下个循环 |
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val fn = f(c) ?: continue |
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val fn = f(c) ?: continue |
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if (fn) depth++ else depth-- //嵌套或者闭合 |
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if (fn) depth++ else depth-- //嵌套或者闭合 |
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}else { //转义字符 |
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}else pos++ |
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var next = queue[pos++] //拉出被转义字符 |
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// { //转义字符 |
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if(commit && next == 'n') commit = false //匹配单行注释终点。当前为\,下个为n,表示换行 |
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// var next = queue[pos++] //拉出被转义字符 |
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else if (!commits && !commit && next == '\\') { |
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// if(commit && next == 'n') commit = false //匹配单行注释终点。当前为\,下个为n,表示换行 |
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queue[pos++] //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据if条件"\\"字串不在注释中,则只能在字串或正则中 |
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// else if (!commits && !commit && next == '\\') { |
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next = queue[pos++] //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 |
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// queue[pos++] //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据if条件"\\"字串不在注释中,则只能在字串或正则中 |
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if(next == '\\')queue[pos++] //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ |
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// next = queue[pos++] //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 |
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} |
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// if(next == '\\')queue[pos++] //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ |
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} |
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// } |
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// } |
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} while (depth > 0 || bracketsDepth >0) //拉出全部符合js语法的字段 |
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} while (depth > 0 || bracketsDepth >0) //拉出全部符合js语法的字段 |
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return if(depth > 0 || bracketsDepth > 0) false else { |
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return if(depth > 0 || bracketsDepth > 0) false else { |
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@ -230,7 +222,7 @@ class RuleAnalyzer(data: String) { |
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var inDoubleQuote = false //双引号 |
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var inDoubleQuote = false //双引号 |
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do { |
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do { |
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if (isEmpty) break |
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if (pos == queue.length) break |
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val c = queue[pos++] |
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val c = queue[pos++] |
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if (c != ESC) { //非转义字符 |
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if (c != ESC) { //非转义字符 |
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if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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if (c == '\'' && !inDoubleQuote) inSingleQuote = !inSingleQuote //匹配具有语法功能的单引号 |
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@ -245,14 +237,15 @@ class RuleAnalyzer(data: String) { |
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if (fn) otherDepth++ else otherDepth-- |
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if (fn) otherDepth++ else otherDepth-- |
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} |
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} |
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}else { //转义字符 |
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}else pos++ |
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var next = queue[pos++] //拉出被转义字符,匹配\/、\"、\'等 |
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// { //转义字符 |
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if (next == ESC) { |
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// var next = queue[pos++] //拉出被转义字符,匹配\/、\"、\'等 |
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queue[pos++] //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据语法特征当前字段在字串或正则中 |
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// if (next == ESC) { |
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next = queue[pos++] //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 |
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// queue[pos++] //当前为\,下个为\,双重转义中"\\"表示转义字符本身,根据语法特征当前字段在字串或正则中 |
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if(next == ESC)queue[pos++] //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ |
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// next = queue[pos++] //拉出下个字符,因为在双重转义的字串或正则中,类似于 \\/ 这样的结构才是转义结构 |
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} |
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// if(next == ESC)queue[pos++] //若为转义字符则继续拉出,因为双重转义中转义字符成对存在,即 \\\\ |
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} |
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// } |
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// } |
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} while (depth > 0 || otherDepth > 0) //拉出一个平衡字串 |
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} while (depth > 0 || otherDepth > 0) //拉出一个平衡字串 |
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return if(depth > 0 || otherDepth > 0) false else { |
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return if(depth > 0 || otherDepth > 0) false else { |
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@ -269,20 +262,32 @@ class RuleAnalyzer(data: String) { |
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if(split.size == 1) { |
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if(split.size == 1) { |
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elementsType = split[0] //设置分割字串 |
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elementsType = split[0] //设置分割字串 |
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return if(!consumeTo(elementsType)) { |
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rule += queue.substring(startX) |
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rule |
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}else { |
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step = elementsType.length //设置分隔符长度 |
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step = elementsType.length //设置分隔符长度 |
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return splitRule(arrayOf()) //仅一个分隔字串时,直接二段解析更快 |
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splitRule() |
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}else if (!consumeToAny(* split)) return arrayOf(queue) //未找到分隔符 |
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} //递归匹配 |
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}else if (!consumeToAny(* split)) { //未找到分隔符 |
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rule += queue.substring(startX) |
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return rule |
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} |
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val st = findToAny( '[','(' ) //查找筛选器 |
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val end = pos //记录分隔位置 |
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pos = start //重回开始,启动另一种查找 |
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if(st == -1) { |
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do{ |
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val st = findToAny('[', '(') //查找筛选器位置 |
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var rule = arrayOf(queue.substring(0, pos)) //压入分隔的首段规则到数组 |
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if (st == -1) { |
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elementsType = queue.substring(pos, pos + step) //设置组合类型 |
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rule = arrayOf(queue.substring(startX, end)) //压入分隔的首段规则到数组 |
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pos += step //跳过分隔符 |
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elementsType = queue.substring(end, end + step) //设置组合类型 |
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pos = end + step //跳过分隔符 |
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while (consumeToAny(* split)) { //循环切分规则压入数组 |
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while (consumeTo(elementsType)) { //循环切分规则压入数组 |
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rule += queue.substring(start, pos) |
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rule += queue.substring(start, pos) |
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pos += step //跳过分隔符 |
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pos += step //跳过分隔符 |
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} |
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} |
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@ -292,73 +297,107 @@ class RuleAnalyzer(data: String) { |
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return rule |
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return rule |
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} |
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} |
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val rule = if(st >pos ){ //先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 |
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if (st > end) { //先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 |
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var rule = arrayOf(queue.substring(0, pos)) //压入分隔的首段规则到数组 |
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rule = arrayOf(queue.substring(startX, end)) //压入分隔的首段规则到数组 |
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elementsType = queue.substring(pos, pos + step) //设置组合类型 |
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elementsType = queue.substring(end, end + step) //设置组合类型 |
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pos += step //跳过分隔符 |
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pos = end + step //跳过分隔符 |
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while (consumeToAny( * split ) && pos < st ) { //循环切分规则压入数组 |
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while (consumeTo(elementsType) && pos < st) { //循环切分规则压入数组 |
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rule += queue.substring(start, pos) |
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rule += queue.substring(start, pos) |
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pos += step //跳过分隔符 |
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pos += step //跳过分隔符 |
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} |
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} |
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return if(pos > st) { |
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startX = start |
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splitRule() //首段已匹配,但当前段匹配未完成,调用二段匹配 |
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} |
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else { //执行到此,证明后面再无分隔字符 |
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rule += queue.substring(pos) //将剩余字段压入数组末尾 |
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rule |
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rule |
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} |
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}else null |
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} |
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pos = st //位置推移到筛选器处 |
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pos = st //位置推移到筛选器处 |
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val next = if(queue[pos] == '[' ) ']' else ')' //平衡组末尾字符 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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return if (rule == null) { //rule为空,首段未匹配完成 |
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if (!chompRuleBalanced(queue[pos], next)) throw Error( |
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queue.substring( |
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0, |
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start |
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) + "后未平衡" |
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) //拉出一个筛选器,不平衡则报错 |
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if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡则报错 |
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}while( end > pos ) |
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splitRule(* split) //递归调用首段匹配 |
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} else { |
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start = pos //设置开始查找筛选器位置的起始位置 |
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if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡则报错 |
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splitRule(rule) //首段已匹配,但当前段匹配未完成,调用二段匹配 |
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} |
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return splitRule(* split) //递归调用首段匹配 |
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} |
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} |
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@JvmName("splitRuleNext") |
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@JvmName("splitRuleNext") |
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private tailrec fun splitRule(rules:Array<String>): Array<String>{ //二段匹配被调用,elementsType非空(已在首段赋值),直接按elementsType查找,比首段采用的方式更快 |
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private tailrec fun splitRule(): Array<String>{ //二段匹配被调用,elementsType非空(已在首段赋值),直接按elementsType查找,比首段采用的方式更快 |
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if (!consumeTo(elementsType,false)) return rules + queue.substring(start) //此处consumeTo(...)开始位置不是规则的开始位置,start沿用上次设置 |
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val end = pos //记录分隔位置 |
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pos = start //重回开始,启动另一种查找 |
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val st = findToAny( '[','(' ) //查找筛选器 |
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do{ |
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val st = findToAny('[', '(') //查找筛选器位置 |
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if (st == -1) { |
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rule += arrayOf(queue.substring(startX, end)) //压入分隔的首段规则到数组 |
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pos = end + step //跳过分隔符 |
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if(st == -1) { |
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var rule = rules + queue.substring(start, pos) //压入本次分隔的首段规则到数组 |
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pos += step //跳过分隔符 |
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while (consumeTo(elementsType)) { //循环切分规则压入数组 |
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while (consumeTo(elementsType)) { //循环切分规则压入数组 |
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rule += queue.substring(start, pos) |
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rule += queue.substring(start, pos) |
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pos += step //跳过分隔符 |
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pos += step //跳过分隔符 |
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} |
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} |
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rule += queue.substring(pos) //将剩余字段压入数组末尾 |
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rule += queue.substring(pos) //将剩余字段压入数组末尾 |
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return rule |
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return rule |
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} |
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} |
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val rule = if(st > pos ){//先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 |
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if (st > end) { //先匹配到st1pos,表明分隔字串不在选择器中,将选择器前分隔字串分隔的字段依次压入数组 |
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var rule = rules + queue.substring(start, pos) //压入本次分隔的首段规则到数组 |
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pos += step //跳过分隔符 |
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rule += arrayOf(queue.substring(startX, end)) //压入分隔的首段规则到数组 |
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pos = end + step //跳过分隔符 |
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while (consumeTo(elementsType) && pos < st) { //循环切分规则压入数组 |
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while (consumeTo(elementsType) && pos < st) { //循环切分规则压入数组 |
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rule += queue.substring(start, pos) |
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rule += queue.substring(start, pos) |
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pos += step //跳过分隔符 |
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pos += step //跳过分隔符 |
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} |
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} |
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return if(pos > st) { |
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startX = start |
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splitRule() //首段已匹配,但当前段匹配未完成,调用二段匹配 |
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} |
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else { //执行到此,证明后面再无分隔字符 |
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rule += queue.substring(pos) //将剩余字段压入数组末尾 |
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rule |
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rule |
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}else rules |
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} |
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} |
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pos = st //位置推移到筛选器处 |
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pos = st //位置推移到筛选器处 |
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val next = if(queue[pos] == '[' ) ']' else ')' //平衡组末尾字符 |
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val next = if (queue[pos] == '[') ']' else ')' //平衡组末尾字符 |
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if(!chompRuleBalanced(queue[pos],next)) throw Error(queue.substring(0, start)+"后未平衡") //拉出一个筛选器,不平衡时返回true,表示未平衡 |
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if (!chompRuleBalanced(queue[pos], next)) throw Error( |
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queue.substring( |
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0, |
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start |
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) + "后未平衡" |
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) //拉出一个筛选器,不平衡则报错 |
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return splitRule(rule) //递归匹配 |
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}while( end > pos ) |
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start = pos //设置开始查找筛选器位置的起始位置 |
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return if(!consumeTo(elementsType)) { |
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rule += queue.substring(startX) |
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rule |
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}else splitRule() //递归匹配 |
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} |
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} |
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