perf: indexCache

.gitignore

@@ -19,3 +19,5 @@ local.properties
 
 *.jks
 *.keystore
+
+/_assets

app/src/main/kotlin/li/songe/gkd/data/ResolvedRule.kt

@@ -3,6 +3,8 @@ package li.songe.gkd.data
 import android.accessibilityservice.AccessibilityService
 import android.view.accessibility.AccessibilityNodeInfo
 import kotlinx.coroutines.Job
+import li.songe.gkd.service.CacheTransform
+import li.songe.gkd.service.createCacheTransform
 import li.songe.gkd.service.lastTriggerRule
 import li.songe.gkd.service.lastTriggerTime
 import li.songe.gkd.service.querySelector
@@ -119,15 +121,37 @@ sealed class ResolvedRule(
         else -> true
     }
 
-    fun query(nodeInfo: AccessibilityNodeInfo?): AccessibilityNodeInfo? {
+    private val canCacheIndex = (matches + excludeMatches).any { s -> s.canCacheIndex }
+
+    fun query(
+        nodeInfo: AccessibilityNodeInfo?,
+        cacheTransform: CacheTransform? = null
+    ): AccessibilityNodeInfo? {
         if (nodeInfo == null) return null
         var target: AccessibilityNodeInfo? = null
+        if (canCacheIndex) {
+            val transform = cacheTransform ?: createCacheTransform()
+            for (selector in matches) {
+                target = nodeInfo.querySelector(selector, quickFind, transform.transform)
+                    ?: return null
+            }
+            for (selector in excludeMatches) {
+                if (nodeInfo.querySelector(
+                        selector,
+                        quickFind,
+                        transform.transform
+                    ) != null
+                ) return null
+            }
+        } else {
             for (selector in matches) {
                 target = nodeInfo.querySelector(selector, quickFind) ?: return null
             }
             for (selector in excludeMatches) {
                 if (nodeInfo.querySelector(selector, quickFind) != null) return null
             }
+        }
+
         return target
     }
 

app/src/main/kotlin/li/songe/gkd/debug/KtorErrorPlugin.kt

@@ -5,6 +5,7 @@ import com.blankj.utilcode.util.LogUtils
 import io.ktor.http.HttpStatusCode
 import io.ktor.server.application.createApplicationPlugin
 import io.ktor.server.application.hooks.CallFailed
+import io.ktor.server.plugins.origin
 import io.ktor.server.request.uri
 import io.ktor.server.response.respond
 import li.songe.gkd.data.RpcError
@@ -13,7 +14,7 @@ val KtorErrorPlugin = createApplicationPlugin(name = "KtorErrorPlugin") {
     onCall { call ->
         // TODO 在局域网会被扫描工具批量请求多个路径
         if (call.request.uri == "/" || call.request.uri.startsWith("/api/")) {
-            Log.d("Ktor", "onCall: ${call.request.uri}")
+            Log.d("Ktor", "onCall: ${call.request.origin.remoteAddress} -> ${call.request.uri}")
         }
     }
     on(CallFailed) { call, cause ->

app/src/main/kotlin/li/songe/gkd/service/AbExt.kt

@@ -56,14 +56,27 @@ fun AccessibilityNodeInfo.getDepth(): Int {
     return depth
 }
 
+fun AccessibilityNodeInfo.getVid(): CharSequence? {
+    val id = viewIdResourceName ?: return null
+    val appId = packageName ?: return null
+    if (id.startsWith(appId) && id.startsWith(":id/", appId.length)) {
+        return id.subSequence(
+            appId.length + ":id/".length,
+            id.length
+        )
+    }
+    return null
+}
+
 fun AccessibilityNodeInfo.querySelector(
     selector: Selector,
     quickFind: Boolean = false,
+    transform: Transform<AccessibilityNodeInfo>? = null,
 ): AccessibilityNodeInfo? {
+    val t = (if (selector.canCacheIndex) transform else defaultTransform) ?: defaultTransform
     if (selector.isMatchRoot) {
         if (parent == null) {
-            val trackNodes = mutableListOf<AccessibilityNodeInfo>()
-            return selector.match(this, abTransform, trackNodes)
+            return selector.match(this, t)
         }
         return null
     }
@@ -81,16 +94,16 @@ fun AccessibilityNodeInfo.querySelector(
             emptyList()
         })
         if (nodes.isNotEmpty()) {
-            val trackNodes = mutableListOf<AccessibilityNodeInfo>()
+            val trackNodes = ArrayList<AccessibilityNodeInfo>(selector.tracks.size)
             nodes.forEach { childNode ->
-                val targetNode = selector.match(childNode, abTransform, trackNodes)
+                val targetNode = selector.match(childNode, t, trackNodes)
                 if (targetNode != null) return targetNode
             }
         }
         return null
     }
     // 在一些开屏广告的界面会造成1-2s的阻塞
-    return abTransform.querySelector(this, selector)
+    return t.querySelector(this, selector)
 }
 
 // 不可以在 多线程/不同协程作用域 里同时使用
@@ -148,17 +161,7 @@ val allowPropertyNames = setOf(
 private val getAttr: (AccessibilityNodeInfo, String) -> Any? = { node, name ->
     when (name) {
         "id" -> node.viewIdResourceName
-        "vid" -> node.viewIdResourceName?.let { id ->
-            val appId = node.packageName
-            if (appId != null && id.startsWith(appId) && id.startsWith(":id/", appId.length)) {
-                id.subSequence(
-                    appId.length + ":id/".length,
-                    id.length
-                )
-            } else {
-                null
-            }
-        }
+        "vid" -> node.getVid()
 
         "name" -> node.className
         "text" -> node.text
@@ -189,22 +192,61 @@ private val getAttr: (AccessibilityNodeInfo, String) -> Any? = { node, name ->
     }
 }
 
-val abTransform = Transform(
-    getAttr = getAttr,
+data class CacheTransform(
+    val transform: Transform<AccessibilityNodeInfo>,
+    val indexCache: HashMap<AccessibilityNodeInfo, Int>,
+)
+
+fun createCacheTransform(): CacheTransform {
+    val indexCache = HashMap<AccessibilityNodeInfo, Int>()
+    fun AccessibilityNodeInfo.getChildX(index: Int): AccessibilityNodeInfo? {
+        return getChild(index)?.also { child ->
+            indexCache[child] = index
+        }
+    }
+
+    fun AccessibilityNodeInfo.getIndexX(): Int {
+        indexCache[this]?.let { return it }
+        parent?.forEachIndexed { index, child ->
+            if (child != null) {
+                indexCache[child] = index
+            }
+            if (child == this) {
+                return index
+            }
+        }
+        return 0
+    }
+
+    val getChildrenCache: (AccessibilityNodeInfo) -> Sequence<AccessibilityNodeInfo> = { node ->
+        sequence {
+            repeat(node.childCount.coerceAtMost(MAX_CHILD_SIZE)) { index ->
+                val child = node.getChildX(index) ?: return@sequence
+                yield(child)
+            }
+        }
+    }
+    val transform = Transform(
+        getAttr = { node, name ->
+            if (name == "index") {
+                node.getIndexX()
+            } else {
+                getAttr(node, name)
+            }
+        },
         getName = { node -> node.className },
-    getChildren = getChildren,
-    getChild = { node, index -> if (index in 0..<node.childCount) node.getChild(index) else null },
+        getChildren = getChildrenCache,
         getParent = { node -> node.parent },
         getDescendants = { node ->
             sequence {
-            val stack = getChildren(node).toMutableList()
+                val stack = getChildrenCache(node).toMutableList()
                 if (stack.isEmpty()) return@sequence
                 stack.reverse()
                 val tempNodes = mutableListOf<AccessibilityNodeInfo>()
                 do {
                     val top = stack.removeLast()
                     yield(top)
-                for (childNode in getChildren(top)) {
+                    for (childNode in getChildrenCache(top)) {
                         tempNodes.add(childNode)
                     }
                     if (tempNodes.isNotEmpty()) {
@@ -215,5 +257,167 @@ val abTransform = Transform(
                     }
                 } while (stack.isNotEmpty())
             }.take(MAX_DESCENDANTS_SIZE)
+        },
+        getChildrenX = { node, connectExpression ->
+            sequence {
+                repeat(node.childCount.coerceAtMost(MAX_CHILD_SIZE)) { offset ->
+                    connectExpression.maxOffset?.let { maxOffset ->
+                        if (offset > maxOffset) return@sequence
                     }
+                    if (connectExpression.checkOffset(offset)) {
+                        val child = node.getChildX(offset) ?: return@sequence
+                        yield(child)
+                    }
+                }
+            }
+        },
+        getBeforeBrothers = { node, connectExpression ->
+            sequence {
+                val parentVal = node.parent ?: return@sequence
+                val index = indexCache[node] // 如果 node 由 quickFind 得到, 则第一次调用此方法可能得到 indexCache 是空
+                if (index != null) {
+                    var i = index - 1
+                    var offset = 0
+                    while (0 <= i && i < parentVal.childCount) {
+                        connectExpression.maxOffset?.let { maxOffset ->
+                            if (offset > maxOffset) return@sequence
+                        }
+                        if (connectExpression.checkOffset(offset)) {
+                            val child = parentVal.getChild(i) ?: return@sequence
+                            yield(child)
+                        }
+                        i--
+                        offset++
+                    }
+                } else {
+                    val list = getChildrenCache(parentVal).takeWhile { it != node }.toMutableList()
+                    list.reverse()
+                    yieldAll(list.filterIndexed { i, _ ->
+                        connectExpression.checkOffset(
+                            i
+                        )
+                    })
+                }
+            }
+        },
+        getAfterBrothers = { node, connectExpression ->
+            val parentVal = node.parent
+            if (parentVal != null) {
+                val index = indexCache[node]
+                if (index != null) {
+                    sequence {
+                        var i = index + 1
+                        var offset = 0
+                        while (0 <= i && i < parentVal.childCount) {
+                            connectExpression.maxOffset?.let { maxOffset ->
+                                if (offset > maxOffset) return@sequence
+                            }
+                            if (connectExpression.checkOffset(offset)) {
+                                val child = parentVal.getChild(i) ?: return@sequence
+                                yield(child)
+                            }
+                            i--
+                            offset++
+                        }
+                    }
+                } else {
+                    getChildrenCache(parentVal).dropWhile { it != node }
+                        .drop(1)
+                        .let {
+                            if (connectExpression.maxOffset != null) {
+                                it.take(connectExpression.maxOffset!! + 1)
+                            } else {
+                                it
+                            }
+                        }
+                        .filterIndexed { i, _ ->
+                            connectExpression.checkOffset(
+                                i
+                            )
+                        }
+                }
+            } else {
+                emptySequence()
+            }
+        },
+        getDescendantsX = { node, connectExpression ->
+            sequence {
+                val stack = getChildrenCache(node).toMutableList()
+                if (stack.isEmpty()) return@sequence
+                stack.reverse()
+                val tempNodes = mutableListOf<AccessibilityNodeInfo>()
+                var offset = 0
+                do {
+                    val top = stack.removeLast()
+                    if (connectExpression.checkOffset(offset)) {
+                        yield(top)
+                    }
+                    offset++
+                    connectExpression.maxOffset?.let { maxOffset ->
+                        if (offset > maxOffset) return@sequence
+                    }
+                    for (childNode in getChildrenCache(top)) {
+                        tempNodes.add(childNode)
+                    }
+                    if (tempNodes.isNotEmpty()) {
+                        for (i in tempNodes.size - 1 downTo 0) {
+                            stack.add(tempNodes[i])
+                        }
+                        tempNodes.clear()
+                    }
+                } while (stack.isNotEmpty())
+            }
+        },
+    )
+
+    return CacheTransform(transform, indexCache)
+}
+
+val defaultCacheTransform = createCacheTransform()
+
+// no cache
+val defaultTransform = Transform(
+    getAttr = getAttr,
+    getName = { node -> node.className },
+    getChildren = getChildren,
+    getParent = { node -> node.parent },
+    getDescendants = { node ->
+        sequence {
+            val stack = getChildren(node).toMutableList()
+            if (stack.isEmpty()) return@sequence
+            stack.reverse()
+            val tempNodes = mutableListOf<AccessibilityNodeInfo>()
+            var offset = 0
+            do {
+                val top = stack.removeLast()
+                yield(top)
+                offset++
+                if (offset > MAX_DESCENDANTS_SIZE) {
+                    return@sequence
+                }
+                for (childNode in getChildren(top)) {
+                    tempNodes.add(childNode)
+                }
+                if (tempNodes.isNotEmpty()) {
+                    for (i in tempNodes.size - 1 downTo 0) {
+                        stack.add(tempNodes[i])
+                    }
+                    tempNodes.clear()
+                }
+            } while (stack.isNotEmpty())
+        }
+    },
+    getChildrenX = { node, connectExpression ->
+        sequence {
+            repeat(node.childCount.coerceAtMost(MAX_CHILD_SIZE)) { offset ->
+                connectExpression.maxOffset?.let { maxOffset ->
+                    if (offset > maxOffset) return@sequence
+                }
+                if (connectExpression.checkOffset(offset)) {
+                    val child = node.getChild(offset) ?: return@sequence
+                    yield(child)
+                }
+            }
+        }
+    },
 )

app/src/main/kotlin/li/songe/gkd/service/GkdAbService.kt

@@ -148,6 +148,7 @@ class GkdAbService : CompositionAbService({
         } else {
             queryThread
         }
+        val common = ctx === queryThread
         queryTaskJob = scope.launchTry(ctx) {
             val activityRule = getAndUpdateCurrentRules()
             for (rule in (activityRule.currentRules)) {
@@ -180,7 +181,14 @@ class GkdAbService : CompositionAbService({
                     return@launchTry
                 }
                 if (!matchApp) continue
-                val target = rule.query(nodeVal) ?: continue
+                val target =
+                    rule.query(nodeVal, if (common) defaultCacheTransform else null)
+                if (common) {
+                    defaultCacheTransform.indexCache.clear()
+                }
+                if (target == null) {
+                    continue
+                }
                 if (activityRule !== getAndUpdateCurrentRules()) break
                 if (rule.checkDelay() && rule.actionDelayJob == null) {
                     rule.actionDelayJob = scope.launch(queryThread) {
@@ -521,8 +529,11 @@ class GkdAbService : CompositionAbService({
                 }
             }
             val targetNode =
-                serviceVal.safeActiveWindow?.querySelector(selector, gkdAction.quickFind)
-                    ?: throw RpcError("没有查询到节点")
+                serviceVal.safeActiveWindow?.querySelector(
+                    selector,
+                    gkdAction.quickFind,
+                    if (selector.canCacheIndex) createCacheTransform().transform else null
+                ) ?: throw RpcError("没有查询到节点")
 
             if (gkdAction.action == null) {
                 // 仅查询

app/src/main/kotlin/li/songe/gkd/ui/AppItemPage.kt

@@ -371,6 +371,7 @@ fun AppItemPage(
                 TextButton(onClick = {
                     if (oldSource == source) {
                         toast("规则无变动")
+                        setEditGroupRaw(null)
                         return@TextButton
                     }
                     val newGroupRaw = try {
@@ -446,6 +447,7 @@ fun AppItemPage(
                 TextButton(onClick = {
                     if (oldSource == source) {
                         toast("禁用项无变动")
+                        setExcludeGroupRaw(null)
                         return@TextButton
                     }
                     setExcludeGroupRaw(null)

app/src/main/kotlin/li/songe/gkd/ui/GlobalRuleExcludePage.kt

@@ -346,6 +346,7 @@ fun GlobalRuleExcludePage(subsItemId: Long, groupKey: Int) {
                 TextButton(onClick = {
                     if (oldSource == source) {
                         toast("禁用项无变动")
+                        showEditDlg = false
                         return@TextButton
                     }
                     showEditDlg = false

app/src/main/kotlin/li/songe/gkd/ui/GlobalRulePage.kt

@@ -343,6 +343,7 @@ fun GlobalRulePage(subsItemId: Long, focusGroupKey: Int? = null) {
             confirmButton = {
                 TextButton(onClick = {
                     if (oldSource == source) {
+                        setEditGroupRaw(null)
                         toast("规则无变动")
                         return@TextButton
                     }

app/src/main/kotlin/li/songe/gkd/ui/home/HomePage.kt

@@ -1,7 +1,6 @@
 package li.songe.gkd.ui.home
 
-import android.app.Activity
-import android.content.Intent
+import android.webkit.URLUtil
 import androidx.compose.material3.Icon
 import androidx.compose.material3.NavigationBar
 import androidx.compose.material3.NavigationBarItem
@@ -18,6 +17,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import com.blankj.utilcode.util.LogUtils
 import com.ramcosta.composedestinations.annotation.Destination
 import com.ramcosta.composedestinations.annotation.RootNavGraph
+import li.songe.gkd.MainActivity
 import li.songe.gkd.util.ProfileTransitions
 
 data class BottomNavItem(
@@ -29,13 +29,19 @@ data class BottomNavItem(
 @Destination(style = ProfileTransitions::class)
 @Composable
 fun HomePage() {
+    val context = LocalContext.current as MainActivity
     val vm = hiltViewModel<HomeVm>()
     val tab by vm.tabFlow.collectAsState()
 
-    val intent: Intent? = (LocalContext.current as Activity).intent
+    val intent = context.intent
     LaunchedEffect(key1 = intent, block = {
         if (intent != null) {
-            LogUtils.d(intent)
+            context.intent = null
+            val data = intent.data
+            val url = data?.getQueryParameter("url")
+            if (data?.scheme == "gkd" && data.host == "import" && URLUtil.isNetworkUrl(url)) {
+                LogUtils.d(data, url)
+            }
         }
     })
 

selector/build.gradle.kts

@@ -16,6 +16,11 @@ kotlin {
         generateTypeScriptDefinitions()
         browser {}
     }
+    sourceSets {
+        all {
+            languageSettings.optIn("kotlin.js.ExperimentalJsExport")
+        }
+    }
     sourceSets["commonMain"].dependencies {
         implementation(libs.kotlin.stdlib.common)
     }

selector/src/commonMain/kotlin/li/songe/selector/ExtSyntaxError.kt

@@ -1,30 +0,0 @@
-package li.songe.selector
-
-import kotlin.js.ExperimentalJsExport
-import kotlin.js.JsExport
-
-@OptIn(ExperimentalJsExport::class)
-@JsExport
-data class ExtSyntaxError internal constructor(
-    val expectedValue: String,
-    val position: Int,
-    val source: String,
-) : Exception(
-    "expected $expectedValue in selector at position $position, but got ${
-        source.getOrNull(
-            position
-        )
-    }"
-) {
-    internal companion object {
-        fun assert(source: String, offset: Int, value: String = "", expectedValue: String? = null) {
-            if (offset >= source.length || (value.isNotEmpty() && !value.contains(source[offset]))) {
-                throw ExtSyntaxError(expectedValue ?: value, offset, source)
-            }
-        }
-
-        fun throwError(source: String, offset: Int, expectedValue: String = ""): Nothing {
-            throw ExtSyntaxError(expectedValue, offset, source)
-        }
-    }
-}

selector/src/commonMain/kotlin/li/songe/selector/GkdSyntaxError.kt

@@ -0,0 +1,31 @@
+package li.songe.selector
+
+import kotlin.js.JsExport
+
+@JsExport
+data class GkdSyntaxError internal constructor(
+    val expectedValue: String,
+    val position: Int,
+    val source: String,
+) : Exception(
+    "expected $expectedValue in selector at position $position, but got ${
+        source.getOrNull(
+            position
+        )
+    }"
+)
+
+internal fun gkdAssert(
+    source: String,
+    offset: Int,
+    value: String = "",
+    expectedValue: String? = null
+) {
+    if (offset >= source.length || (value.isNotEmpty() && !value.contains(source[offset]))) {
+        throw GkdSyntaxError(expectedValue ?: value, offset, source)
+    }
+}
+
+internal fun gkdError(source: String, offset: Int, expectedValue: String = ""): Nothing {
+    throw GkdSyntaxError(expectedValue, offset, source)
+}

selector/src/commonMain/kotlin/li/songe/selector/MultiplatformSelector.kt

@@ -1,12 +1,10 @@
 package li.songe.selector
 
-import kotlin.js.ExperimentalJsExport
 import kotlin.js.JsExport
 
-
-@OptIn(ExperimentalJsExport::class)
 @JsExport
-class CommonSelector private constructor(
+@Suppress("UNUSED")
+class MultiplatformSelector private constructor(
     internal val selector: Selector,
 ) {
     val tracks = selector.tracks
@@ -19,21 +17,24 @@ class CommonSelector private constructor(
     val qfTextValue = selector.qfTextValue
     val canQf = selector.canQf
     val isMatchRoot = selector.isMatchRoot
+    fun checkType(getType: (String) -> String): Boolean {
+        return selector.checkType(getType)
+    }
 
-    fun <T : Any> match(node: T, transform: CommonTransform<T>): T? {
+    fun <T : Any> match(node: T, transform: MultiplatformTransform<T>): T? {
         return selector.match(node, transform.transform)
     }
 
     @Suppress("UNCHECKED_CAST")
-    fun <T : Any> matchTrack(node: T, transform: CommonTransform<T>): Array<T>? {
+    fun <T : Any> matchTrack(node: T, transform: MultiplatformTransform<T>): Array<T>? {
         return selector.matchTracks(node, transform.transform)?.toTypedArray<Any?>() as Array<T>?
     }
 
     override fun toString() = selector.toString()
 
     companion object {
-        fun parse(source: String) = CommonSelector(Selector.parse(source))
-        fun parseOrNull(source: String) = Selector.parseOrNull(source)?.let(::CommonSelector)
+        fun parse(source: String) = MultiplatformSelector(Selector.parse(source))
+        fun parseOrNull(source: String) = Selector.parseOrNull(source)?.let(::MultiplatformSelector)
     }
 }
 

selector/src/commonMain/kotlin/li/songe/selector/MultiplatformTransform.kt

@@ -1,11 +1,10 @@
 package li.songe.selector
 
-import kotlin.js.ExperimentalJsExport
 import kotlin.js.JsExport
 
-@OptIn(ExperimentalJsExport::class)
 @JsExport
-class CommonTransform<T : Any>(
+@Suppress("UNCHECKED_CAST", "UNUSED")
+class MultiplatformTransform<T : Any>(
     getAttr: (T, String) -> Any?,
     getName: (T) -> String?,
     getChildren: (T) -> Array<T>,
@@ -18,28 +17,23 @@ class CommonTransform<T : Any>(
         getParent = getParent,
     )
 
-    @Suppress("UNCHECKED_CAST", "UNUSED")
-    val querySelectorAll: (T, CommonSelector) -> Array<T> = { node, selector ->
+    val querySelectorAll: (T, MultiplatformSelector) -> Array<T> = { node, selector ->
         val result =
             transform.querySelectorAll(node, selector.selector).toList().toTypedArray<Any?>()
         result as Array<T>
     }
 
-    @Suppress("UNUSED")
-    val querySelector: (T, CommonSelector) -> T? = { node, selector ->
+    val querySelector: (T, MultiplatformSelector) -> T? = { node, selector ->
         transform.querySelectorAll(node, selector.selector).firstOrNull()
     }
 
-
-    @Suppress("UNCHECKED_CAST", "UNUSED")
-    val querySelectorTrackAll: (T, CommonSelector) -> Array<Array<T>> = { node, selector ->
+    val querySelectorTrackAll: (T, MultiplatformSelector) -> Array<Array<T>> = { node, selector ->
         val result = transform.querySelectorTrackAll(node, selector.selector)
             .map { it.toTypedArray<Any?>() as Array<T> }.toList().toTypedArray<Any?>()
         result as Array<Array<T>>
     }
 
-    @Suppress("UNCHECKED_CAST", "UNUSED")
-    val querySelectorTrack: (T, CommonSelector) -> Array<T>? = { node, selector ->
+    val querySelectorTrack: (T, MultiplatformSelector) -> Array<T>? = { node, selector ->
         transform.querySelectorTrackAll(node, selector.selector).firstOrNull()
             ?.toTypedArray<Any?>() as Array<T>?
     }

selector/src/commonMain/kotlin/li/songe/selector/NodeFc.kt

@@ -1,17 +0,0 @@
-package li.songe.selector
-
-internal interface NodeMatchFc {
-    operator fun <T> invoke(node: T, transform: Transform<T>): Boolean
-}
-
-interface NodeSequenceFc {
-    operator fun <T> invoke(sq: Sequence<T?>): Sequence<T?>
-}
-
-internal val emptyNodeSequence = object : NodeSequenceFc {
-    override fun <T> invoke(sq: Sequence<T?>) = emptySequence<T?>()
-}
-
-internal interface NodeTraversalFc {
-    operator fun <T> invoke(node: T, transform: Transform<T>): Sequence<T?>
-}

selector/src/commonMain/kotlin/li/songe/selector/Selector.kt

@@ -2,54 +2,32 @@ package li.songe.selector
 
 import li.songe.selector.data.BinaryExpression
 import li.songe.selector.data.CompareOperator
+import li.songe.selector.data.ConnectOperator
+import li.songe.selector.data.PrimitiveValue
 import li.songe.selector.data.PropertyWrapper
 import li.songe.selector.parser.ParserSet
 
-
 class Selector internal constructor(private val propertyWrapper: PropertyWrapper) {
     override fun toString(): String {
         return propertyWrapper.toString()
     }
 
-    val tracks by lazy {
+    val tracks = run {
         val list = mutableListOf(propertyWrapper)
         while (true) {
             list.add(list.last().to?.to ?: break)
         }
-        list.map { p -> p.propertySegment.tracked }.toTypedArray()
+        list.map { p -> p.propertySegment.tracked }.toTypedArray<Boolean>()
     }
 
     val trackIndex = tracks.indexOfFirst { it }.let { i ->
         if (i < 0) 0 else i
     }
 
-    val connectKeys by lazy {
-        var c = propertyWrapper.to
-        val keys = mutableListOf<String>()
-        while (c != null) {
-            c?.apply {
-                keys.add(connectSegment.operator.key)
-            }
-            c = c?.to?.to
-        }
-        keys.toTypedArray()
-    }
-
-    val propertyNames by lazy {
-        var p: PropertyWrapper? = propertyWrapper
-        val names = mutableSetOf<String>()
-        while (p != null) {
-            val s = p!!.propertySegment
-            p = p!!.to?.to
-            names.addAll(s.propertyNames)
-        }
-        names.distinct().toTypedArray()
-    }
-
     fun <T> match(
         node: T,
         transform: Transform<T>,
-        trackNodes: MutableList<T> = mutableListOf(),
+        trackNodes: MutableList<T> = ArrayList(tracks.size),
     ): T? {
         val trackTempNodes = matchTracks(node, transform, trackNodes) ?: return null
         return trackTempNodes[trackIndex]
@@ -58,30 +36,30 @@ class Selector internal constructor(private val propertyWrapper: PropertyWrapper
     fun <T> matchTracks(
         node: T,
         transform: Transform<T>,
-        trackNodes: MutableList<T> = mutableListOf(),
+        trackNodes: MutableList<T> = ArrayList(tracks.size),
     ): List<T>? {
         return propertyWrapper.matchTracks(node, transform, trackNodes)
     }
 
     val qfIdValue = propertyWrapper.propertySegment.expressions.firstOrNull().let { e ->
-        if (e is BinaryExpression && e.name == "id" && e.operator == CompareOperator.Equal && e.value is String) {
-            e.value
+        if (e is BinaryExpression && e.name == "id" && e.operator == CompareOperator.Equal && e.value is PrimitiveValue.StringValue) {
+            e.value.value
         } else {
             null
         }
     }
 
     val qfVidValue = propertyWrapper.propertySegment.expressions.firstOrNull().let { e ->
-        if (e is BinaryExpression && e.name == "vid" && e.operator == CompareOperator.Equal && e.value is String) {
-            e.value
+        if (e is BinaryExpression && e.name == "vid" && e.operator == CompareOperator.Equal && e.value is PrimitiveValue.StringValue) {
+            e.value.value
         } else {
             null
         }
     }
 
     val qfTextValue = propertyWrapper.propertySegment.expressions.firstOrNull().let { e ->
-        if (e is BinaryExpression && e.name == "text" && (e.operator == CompareOperator.Equal || e.operator == CompareOperator.Start || e.operator == CompareOperator.Include || e.operator == CompareOperator.End) && e.value is String) {
-            e.value
+        if (e is BinaryExpression && e.name == "text" && (e.operator == CompareOperator.Equal || e.operator == CompareOperator.Start || e.operator == CompareOperator.Include || e.operator == CompareOperator.End) && e.value is PrimitiveValue.StringValue) {
+            e.value.value
         } else {
             null
         }
@@ -91,9 +69,58 @@ class Selector internal constructor(private val propertyWrapper: PropertyWrapper
 
     // 主动查询
     val isMatchRoot = propertyWrapper.propertySegment.expressions.firstOrNull().let { e ->
-        e is BinaryExpression && e.name == "depth" && e.operator == CompareOperator.Equal && e.value == 0
+        e is BinaryExpression && e.name == "depth" && e.operator == CompareOperator.Equal && e.value.value == 0
     }
 
+    val connectKeys = run {
+        var c = propertyWrapper.to
+        val keys = mutableListOf<String>()
+        while (c != null) {
+            c.apply {
+                keys.add(connectSegment.operator.key)
+            }
+            c = c.to.to
+        }
+        keys.toTypedArray()
+    }
+
+    private val binaryExpressions = run {
+        var p: PropertyWrapper? = propertyWrapper
+        val names = mutableListOf<BinaryExpression>()
+        while (p != null) {
+            val s = p.propertySegment
+            names.addAll(s.binaryExpressions)
+            p = p.to?.to
+        }
+        names.distinct().toTypedArray()
+    }
+
+    val propertyNames = run {
+        binaryExpressions.map { e -> e.name }.distinct().toTypedArray()
+    }
+
+    fun checkType(getType: (String) -> String): Boolean {
+        binaryExpressions.forEach { e ->
+            if (e.value.value != null) {
+                val type = getType(e.name)
+                if (!(when (type) {
+                        "boolean" -> e.value is PrimitiveValue.BooleanValue
+                        "int" -> e.value is PrimitiveValue.IntValue
+                        "string" -> e.value is PrimitiveValue.StringValue
+                        else -> false
+                    })
+                ) return false
+            }
+        }
+        return false
+    }
+
+
+    val canCacheIndex =
+        connectKeys.contains(ConnectOperator.BeforeBrother.key) || connectKeys.contains(
+            ConnectOperator.AfterBrother.key
+        ) || propertyNames.contains("index")
+
     companion object {
         fun parse(source: String) = ParserSet.selectorParser(source)
         fun parseOrNull(source: String) = try {

selector/src/commonMain/kotlin/li/songe/selector/Transform.kt

@@ -1,54 +1,14 @@
 package li.songe.selector
 
+import li.songe.selector.data.ConnectExpression
 
+@Suppress("UNUSED")
 class Transform<T>(
     val getAttr: (T, String) -> Any?,
     val getName: (T) -> CharSequence?,
     val getChildren: (T) -> Sequence<T>,
-    val getChild: (T, Int) -> T? = { node, offset -> getChildren(node).elementAtOrNull(offset) },
     val getParent: (T) -> T?,
-    val getAncestors: (T) -> Sequence<T> = { node ->
-        sequence {
-            var parentVar: T? = getParent(node) ?: return@sequence
-            while (parentVar != null) {
-                parentVar?.let {
-                    yield(it)
-                    parentVar = getParent(it)
-                }
-            }
-        }
-    },
-    val getAncestor: (T, Int) -> T? = { node, offset -> getAncestors(node).elementAtOrNull(offset) },
 
-    val getBeforeBrothers: (T) -> Sequence<T?> = { node ->
-        sequence {
-            val parentVal = getParent(node) ?: return@sequence
-            val list = getChildren(parentVal).takeWhile { it != node }.toMutableList()
-            list.reverse()
-            yieldAll(list)
-        }
-    },
-    val getBeforeBrother: (T, Int) -> T? = { node, offset ->
-        getBeforeBrothers(node).elementAtOrNull(
-            offset
-        )
-    },
-
-    val getAfterBrothers: (T) -> Sequence<T?> = { node ->
-        sequence {
-            val parentVal = getParent(node) ?: return@sequence
-            yieldAll(getChildren(parentVal).dropWhile { it != node }.drop(1))
-        }
-    },
-    val getAfterBrother: (T, Int) -> T? = { node, offset ->
-        getAfterBrothers(node).elementAtOrNull(
-            offset
-        )
-    },
-
-    /**
-     * 遍历下面所有子孙节点,不包含自己
-     */
     val getDescendants: (T) -> Sequence<T> = { node ->
         sequence { //            深度优先 先序遍历
             //            https://developer.mozilla.org/zh-CN/docs/Web/API/Document/querySelector
@@ -73,12 +33,112 @@ class Transform<T>(
         }
     },
 
-    ) {
+    val getChildrenX: (T, ConnectExpression) -> Sequence<T> = { node, connectExpression ->
+        getChildren(node)
+            .let {
+                if (connectExpression.maxOffset != null) {
+                    it.take(connectExpression.maxOffset!! + 1)
+                } else {
+                    it
+                }
+            }
+            .filterIndexed { i, _ ->
+                connectExpression.checkOffset(
+                    i
+                )
+            }
+    },
+    val getAncestors: (T, ConnectExpression) -> Sequence<T> = { node, connectExpression ->
+        sequence {
+            var parentVar: T? = getParent(node) ?: return@sequence
+            var offset = 0
+            while (parentVar != null) {
+                parentVar?.let {
+                    if (connectExpression.checkOffset(offset)) {
+                        yield(it)
+                    }
+                    offset++
+                    connectExpression.maxOffset?.let { maxOffset ->
+                        if (offset > maxOffset) {
+                            return@sequence
+                        }
+                    }
+                    parentVar = getParent(it)
+                }
+            }
+        }
+    },
+    val getBeforeBrothers: (T, ConnectExpression) -> Sequence<T> = { node, connectExpression ->
+        val parentVal = getParent(node)
+        if (parentVal != null) {
+            val list = getChildren(parentVal).takeWhile { it != node }.toMutableList()
+            list.reverse()
+            list.asSequence().filterIndexed { i, _ ->
+                connectExpression.checkOffset(
+                    i
+                )
+            }
+        } else {
+            emptySequence()
+        }
+    },
+    val getAfterBrothers: (T, ConnectExpression) -> Sequence<T> = { node, connectExpression ->
+        val parentVal = getParent(node)
+        if (parentVal != null) {
+            getChildren(parentVal).dropWhile { it != node }
+                .drop(1)
+                .let {
+                    if (connectExpression.maxOffset != null) {
+                        it.take(connectExpression.maxOffset!! + 1)
+                    } else {
+                        it
+                    }
+                }.filterIndexed { i, _ ->
+                    connectExpression.checkOffset(
+                        i
+                    )
+                }
+        } else {
+            emptySequence()
+        }
+    },
 
+    val getDescendantsX: (T, ConnectExpression) -> Sequence<T> = { node, connectExpression ->
+        sequence {
+            val stack = getChildren(node).toMutableList()
+            if (stack.isEmpty()) return@sequence
+            stack.reverse()
+            val tempNodes = mutableListOf<T>()
+            var offset = 0
+            do {
+                val top = stack.removeLast()
+                if (connectExpression.checkOffset(offset)) {
+                    yield(top)
+                }
+                offset++
+                connectExpression.maxOffset?.let { maxOffset ->
+                    if (offset > maxOffset) {
+                        return@sequence
+                    }
+                }
+                for (childNode in getChildren(top)) {
+                    tempNodes.add(childNode)
+                }
+                if (tempNodes.isNotEmpty()) {
+                    for (i in tempNodes.size - 1 downTo 0) {
+                        stack.add(tempNodes[i])
+                    }
+                    tempNodes.clear()
+                }
+            } while (stack.isNotEmpty())
+        }
+    },
+
+    ) {
     val querySelectorAll: (T, Selector) -> Sequence<T> = { node, selector ->
         sequence {
             // cache trackNodes
-            val trackNodes: MutableList<T> = mutableListOf()
+            val trackNodes = ArrayList<T>(selector.tracks.size)
             val r0 = selector.match(node, this@Transform, trackNodes)
             if (r0 != null) yield(r0)
             getDescendants(node).forEach { childNode ->
@@ -104,7 +164,6 @@ class Transform<T>(
         }
     }
 
-    @Suppress("UNUSED")
     val querySelectorTrack: (T, Selector) -> List<T>? = { node, selector ->
         querySelectorTrackAll(
             node, selector

selector/src/commonMain/kotlin/li/songe/selector/data/BinaryExpression.kt

@@ -2,50 +2,16 @@ package li.songe.selector.data
 
 import li.songe.selector.Transform
 
-data class BinaryExpression(val name: String, val operator: CompareOperator, val value: Any?) :
+data class BinaryExpression(
+    val name: String,
+    val operator: CompareOperator,
+    val value: PrimitiveValue
+) :
     Expression() {
     override fun <T> match(node: T, transform: Transform<T>) =
-        operator.compare(transform.getAttr(node, name), value)
+        operator.compare(transform.getAttr(node, name), value.value)
 
-    override val propertyNames = listOf(name)
+    override val binaryExpressions = listOf(this)
 
-    override fun toString() = "${name}${operator}${
-        if (value is String) {
-            val wrapChar = '"'
-            val sb = StringBuilder()
-            sb.append(wrapChar)
-            value.forEach { c ->
-                val escapeChar = when (c) {
-                    wrapChar -> wrapChar
-                    '\n' -> 'n'
-                    '\r' -> 'r'
-                    '\t' -> 't'
-                    '\b' -> 'b'
-                    '\\' -> '\\'
-                    else -> null
-                }
-                if (escapeChar != null) {
-                    sb.append("\\" + escapeChar)
-                } else {
-                    when (c.code) {
-                        in 0..0xf -> {
-                            sb.append("\\x0" + c.code.toString(16))
-                        }
-
-                        in 10..0x1f -> {
-                            sb.append("\\x" + c.code.toString(16))
-                        }
-
-                        else -> {
-                            sb.append(c)
-                        }
-                    }
-                }
-            }
-            sb.append(wrapChar)
-            sb.toString()
-        } else {
-            value
-        }
-    }"
+    override fun toString() = "${name}${operator.key}${value}"
 }

selector/src/commonMain/kotlin/li/songe/selector/data/CompareOperator.kt

@@ -1,8 +1,8 @@
 package li.songe.selector.data
 
 sealed class CompareOperator(val key: String) {
-    override fun toString() = key
     abstract fun compare(left: Any?, right: Any?): Boolean
+    abstract fun allowType(type: PrimitiveValue): Boolean
 
     companion object {
         // https://stackoverflow.com/questions/47648689
@@ -35,70 +35,96 @@ sealed class CompareOperator(val key: String) {
                 left == right
             }
         }
+
+        override fun allowType(type: PrimitiveValue) = true
     }
 
     data object NotEqual : CompareOperator("!=") {
         override fun compare(left: Any?, right: Any?) = !Equal.compare(left, right)
+        override fun allowType(type: PrimitiveValue) = true
     }
 
     data object Start : CompareOperator("^=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) left.startsWith(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object NotStart : CompareOperator("!^=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) !left.startsWith(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object Include : CompareOperator("*=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) left.contains(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object NotInclude : CompareOperator("!*=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) !left.contains(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object End : CompareOperator("$=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) left.endsWith(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object NotEnd : CompareOperator("!$=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is CharSequence && right is CharSequence) !left.endsWith(right) else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.StringValue
     }
 
     data object Less : CompareOperator("<") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is Int && right is Int) left < right else false
         }
+
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.IntValue
     }
 
     data object LessEqual : CompareOperator("<=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is Int && right is Int) left <= right else false
         }
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.IntValue
     }
 
     data object More : CompareOperator(">") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is Int && right is Int) left > right else false
         }
+
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.IntValue
     }
 
     data object MoreEqual : CompareOperator(">=") {
         override fun compare(left: Any?, right: Any?): Boolean {
             return if (left is Int && right is Int) left >= right else false
         }
+
+
+        override fun allowType(type: PrimitiveValue) = type is PrimitiveValue.IntValue
     }
 
 }

selector/src/commonMain/kotlin/li/songe/selector/data/ConnectExpression.kt

@@ -1,10 +1,8 @@
 package li.songe.selector.data
 
-import li.songe.selector.NodeSequenceFc
-
 sealed class ConnectExpression {
-    abstract val isConstant: Boolean
     abstract val minOffset: Int
-
-    internal abstract val traversal: NodeSequenceFc
+    abstract val maxOffset: Int?
+    abstract fun checkOffset(offset: Int): Boolean
+    abstract fun getOffset(i: Int): Int
 }

selector/src/commonMain/kotlin/li/songe/selector/data/ConnectOperator.kt

@@ -3,9 +3,9 @@ package li.songe.selector.data
 import li.songe.selector.Transform
 
 sealed class ConnectOperator(val key: String) {
-    override fun toString() = key
-    abstract fun <T> traversal(node: T, transform: Transform<T>): Sequence<T?>
-    abstract fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T?
+    abstract fun <T> traversal(
+        node: T, transform: Transform<T>, connectExpression: ConnectExpression
+    ): Sequence<T>
 
     companion object {
         // https://stackoverflow.com/questions/47648689
@@ -20,54 +20,47 @@ sealed class ConnectOperator(val key: String) {
      * A + B, 1,2,3,A,B,7,8
      */
     data object BeforeBrother : ConnectOperator("+") {
-        override fun <T> traversal(node: T, transform: Transform<T>) =
-            transform.getBeforeBrothers(node)
+        override fun <T> traversal(
+            node: T, transform: Transform<T>, connectExpression: ConnectExpression
+        ) = transform.getBeforeBrothers(node, connectExpression)
 
-        override fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T? =
-            transform.getBeforeBrother(node, offset)
     }
 
     /**
      * A - B, 1,2,3,B,A,7,8
      */
     data object AfterBrother : ConnectOperator("-") {
-        override fun <T> traversal(node: T, transform: Transform<T>) =
-            transform.getAfterBrothers(node)
-
-        override fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T? =
-            transform.getAfterBrother(node, offset)
+        override fun <T> traversal(
+            node: T, transform: Transform<T>, connectExpression: ConnectExpression
+        ) = transform.getAfterBrothers(node, connectExpression)
     }
 
     /**
      * A > B, A is the ancestor of B
      */
     data object Ancestor : ConnectOperator(">") {
-        override fun <T> traversal(node: T, transform: Transform<T>) = transform.getAncestors(node)
+        override fun <T> traversal(
+            node: T, transform: Transform<T>, connectExpression: ConnectExpression
+        ) = transform.getAncestors(node, connectExpression)
 
-        override fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T? =
-            transform.getAncestor(node, offset)
     }
 
     /**
      * A < B, A is the child of B
      */
     data object Child : ConnectOperator("<") {
-        override fun <T> traversal(node: T, transform: Transform<T>) = transform.getChildren(node)
-
-        override fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T? =
-            transform.getChild(node, offset)
+        override fun <T> traversal(
+            node: T, transform: Transform<T>, connectExpression: ConnectExpression
+        ) = transform.getChildrenX(node, connectExpression)
     }
 
     /**
      * A << B, A is the descendant of B
      */
     data object Descendant : ConnectOperator("<<") {
-        override fun <T> traversal(node: T, transform: Transform<T>) =
-            transform.getDescendants(node)
-
-        override fun <T> traversal(node: T, transform: Transform<T>, offset: Int): T? =
-            transform.getDescendants(node).elementAtOrNull(offset)
+        override fun <T> traversal(
+            node: T, transform: Transform<T>, connectExpression: ConnectExpression
+        ) = transform.getDescendantsX(node, connectExpression)
     }
 
-
 }

selector/src/commonMain/kotlin/li/songe/selector/data/ConnectSegment.kt

@@ -1,7 +1,6 @@
 package li.songe.selector.data
 
 import li.songe.selector.Transform
-import li.songe.selector.NodeTraversalFc
 
 data class ConnectSegment(
     val operator: ConnectOperator = ConnectOperator.Ancestor,
@@ -11,26 +10,10 @@ data class ConnectSegment(
         if (operator == ConnectOperator.Ancestor && connectExpression is PolynomialExpression && connectExpression.a == 1 && connectExpression.b == 0) {
             return ""
         }
-        return operator.toString() + connectExpression.toString()
+        return operator.key + connectExpression.toString()
     }
 
-    internal val traversal = if (connectExpression.isConstant) {
-        object : NodeTraversalFc {
-            override fun <T> invoke(node: T, transform: Transform<T>): Sequence<T?> = sequence {
-                val node1 = operator.traversal(node, transform, connectExpression.minOffset)
-                if (node1 != null) {
-                    yield(node1)
+    fun <T> traversal(node: T, transform: Transform<T>): Sequence<T?> {
+        return operator.traversal(node, transform, connectExpression)
     }
 }
-        }
-    } else {
-        object : NodeTraversalFc {
-            override fun <T> invoke(node: T, transform: Transform<T>): Sequence<T?> {
-                return connectExpression.traversal(
-                    operator.traversal(node, transform)
-                )
-            }
-        }
-    }
-
-}

selector/src/commonMain/kotlin/li/songe/selector/data/ConnectWrapper.kt

@@ -12,7 +12,7 @@ data class ConnectWrapper(
 
     fun <T> matchTracks(
         node: T, transform: Transform<T>,
-        trackNodes: MutableList<T> = mutableListOf(),
+        trackNodes: MutableList<T>,
     ): List<T>? {
         connectSegment.traversal(node, transform).forEach {
             if (it == null) return@forEach

selector/src/commonMain/kotlin/li/songe/selector/data/Expression.kt

@@ -5,5 +5,5 @@ import li.songe.selector.Transform
 sealed class Expression {
     abstract fun <T> match(node: T, transform: Transform<T>): Boolean
 
-    abstract val propertyNames: List<String>
+    abstract val binaryExpressions: List<BinaryExpression>
 }

selector/src/commonMain/kotlin/li/songe/selector/data/LogicalExpression.kt

@@ -11,7 +11,7 @@ data class LogicalExpression(
         return operator.compare(node, transform, left, right)
     }
 
-    override val propertyNames = left.propertyNames + right.propertyNames
+    override val binaryExpressions = left.binaryExpressions + right.binaryExpressions
 
     override fun toString(): String {
         val leftStr = if (left is LogicalExpression && left.operator != operator) {
@@ -24,6 +24,6 @@ data class LogicalExpression(
         } else {
             right.toString()
         }
-        return "$leftStr\u0020$operator\u0020$rightStr"
+        return "$leftStr\u0020${operator.key}\u0020$rightStr"
     }
 }

selector/src/commonMain/kotlin/li/songe/selector/data/LogicalOperator.kt

@@ -12,7 +12,6 @@ sealed class LogicalOperator(val key: String) {
         }
     }
 
-    override fun toString() = key
     abstract fun <T> compare(
         node: T,
         transform: Transform<T>,

selector/src/commonMain/kotlin/li/songe/selector/data/PolynomialExpression.kt

@@ -1,7 +1,5 @@
 package li.songe.selector.data
 
-import li.songe.selector.NodeSequenceFc
-
 /**
  * an+b
  */
@@ -30,50 +28,112 @@ data class PolynomialExpression(val a: Int = 0, val b: Int = 1) : ConnectExpress
         return "(${a}n${bOp}${b})"
     }
 
-    val numbers = if (a < 0) {
-        if (b < 0) {
-            emptyList()
-        } else if (b > 0) {
+    private fun invalidValue(): Nothing {
+        error("invalid PolynomialExpression: a=$a, b=$b")
+    }
+
+    override val minOffset = if (a > 0) {
+        if (b > 0) {
+            a + b
+        } else if (b == 0) {
+            a
+        } else {
+            // 2n-10 -> n>=6
+            // 3n-10 -> n>=4
+            // 3n-3 -> n>=2
+            // 3n-1 -> n>=1
+            // an+b>0 -> n>-b/a
+            val minN = -b / a + 1
+            a * minN + b
+        }
+    } else if (a == 0) {
+        if (b > 0) {
+            b
+        } else {
+            invalidValue()
+        }
+    } else {
+        if (b > 0) {
             if (b <= -a) {
-                emptyList()
+                invalidValue()
             } else {
-                val list = mutableListOf<Int>()
-                var n = 1
-                while (a * n + b > 0) {
-                    list.add(a * n + b)
-                    n++
-                }
-                list.sorted()
+                // -2n+9 -> (1_7,2_5,3_3,4_1) -> (1,3,5,7) -> 1
+                // -3n+9 -> (1_6,2_3) -> (3,6)
+                // -5n+7 -> (1_2) -> (2)
+                val maxN = -b / a - if (b % a == 0) 1 else 0
+                a * maxN + b
             }
         } else {
-            emptyList()
+            invalidValue()
         }
-    } else if (a > 0) {
-        // infinite
-        emptyList()
+    } - 1
+
+    override val maxOffset = if (a > 0) {
+        null
+    } else if (a == 0) {
+        if (b > 0) {
+            b
         } else {
-        if (b < 0) {
-            emptyList()
-        } else if (b > 0) {
-            listOf(b)
+            invalidValue()
+        }
     } else {
-            emptyList()
-        }
-    }
-
-    override val isConstant = numbers.size == 1
-    override val minOffset = (numbers.firstOrNull() ?: 1) - 1
-    private val b1 = b - 1
-    private val maxAb = a + b // when a<=0
-
-    override val traversal = object : NodeSequenceFc {
-        override fun <T> invoke(sq: Sequence<T?>): Sequence<T?> {
-            return (if (a > 0) {
-                sq
-            } else {
-                sq.take(maxAb)
-            }).filterIndexed { x, _ -> (x - b1) % a == 0 && (x - b1) / a > 0 }
+        if (b > 0) {
+            if (b <= -a) {
+                invalidValue()
+            } else {
+                a + b
+            }
+        } else {
+            invalidValue()
+        }
+    } - 1
+
+    private val isConstant = minOffset == maxOffset
+
+    // (2n-1) -> (1,3,5) -> [0,2,4]
+    override fun checkOffset(offset: Int): Boolean {
+        if (isConstant) {
+            return offset == minOffset
+        }
+        val y = (offset + 1) - b
+        return y % a == 0 && y / a >= 1
+    }
+
+    private val innerGetOffset: (Int) -> Int = if (a > 0) {
+        if (b > 0) {
+            { i -> a * i + b }
+        } else if (b == 0) {
+            { i -> a * i + b }
+        } else {
+            val minN = -b / a + 1
+            { i -> a * (minN + i) + b }
+        }
+    } else if (a == 0) {
+        if (b > 0) {
+            { i ->
+                if (i != 0) {
+                    invalidValue()
+                }
+                b
+            }
+        } else {
+            invalidValue()
+        }
+    } else {
+        if (b > 0) {
+            if (b <= -a) {
+                invalidValue()
+            } else {
+                // -2n+9 -> (1_7,2_5,3_3,4_1) -> (1,3,5,7) -> 1
+                // -3n+9 -> (1_6,2_3) -> (3,6)
+                // -5n+7 -> (1_2) -> (2)
+                val maxN = -b / a - if (b % a == 0) 1 else 0
+                { i -> a * (maxN - i) + b }
+            }
+        } else {
+            invalidValue()
         }
     }
 
+    override fun getOffset(i: Int) = innerGetOffset(i) - 1
 }

selector/src/commonMain/kotlin/li/songe/selector/data/PrimitiveValue.kt

@@ -0,0 +1,53 @@
+package li.songe.selector.data
+
+sealed class PrimitiveValue(open val value: Any?) {
+    data object NullValue : PrimitiveValue(null) {
+        override fun toString() = "null"
+    }
+
+    data class BooleanValue(override val value: Boolean) : PrimitiveValue(value) {
+        override fun toString() = value.toString()
+    }
+
+    data class IntValue(override val value: Int) : PrimitiveValue(value) {
+        override fun toString() = value.toString()
+    }
+
+    data class StringValue(override val value: String) : PrimitiveValue(value) {
+        override fun toString(): String {
+            val wrapChar = '"'
+            val sb = StringBuilder(value.length + 2)
+            sb.append(wrapChar)
+            value.forEach { c ->
+                val escapeChar = when (c) {
+                    wrapChar -> wrapChar
+                    '\n' -> 'n'
+                    '\r' -> 'r'
+                    '\t' -> 't'
+                    '\b' -> 'b'
+                    '\\' -> '\\'
+                    else -> null
+                }
+                if (escapeChar != null) {
+                    sb.append("\\" + escapeChar)
+                } else {
+                    when (c.code) {
+                        in 0..0xf -> {
+                            sb.append("\\x0" + c.code.toString(16))
+                        }
+
+                        in 0x10..0x1f -> {
+                            sb.append("\\x" + c.code.toString(16))
+                        }
+
+                        else -> {
+                            sb.append(c)
+                        }
+                    }
+                }
+            }
+            sb.append(wrapChar)
+            return sb.toString()
+        }
+    }
+}

selector/src/commonMain/kotlin/li/songe/selector/data/PropertySegment.kt

@@ -1,6 +1,5 @@
 package li.songe.selector.data
 
-import li.songe.selector.NodeMatchFc
 import li.songe.selector.Transform
 
 
@@ -14,22 +13,15 @@ data class PropertySegment(
 ) {
     private val matchAnyName = name.isBlank() || name == "*"
 
-    val propertyNames =
-        (if (matchAnyName) listOf("name") else emptyList()) + expressions.map { e -> e.propertyNames }
-            .flatten()
+    val binaryExpressions = expressions.map { e -> e.binaryExpressions }.flatten()
 
     override fun toString(): String {
         val matchTag = if (tracked) "@" else ""
         return matchTag + name + expressions.joinToString("") { "[$it]" }
     }
 
-    private val matchName = if (matchAnyName) {
-        object : NodeMatchFc {
-            override fun <T> invoke(node: T, transform: Transform<T>) = true
-        }
-    } else {
-        object : NodeMatchFc {
-            override fun <T> invoke(node: T, transform: Transform<T>): Boolean {
+    private fun <T> matchName(node: T, transform: Transform<T>): Boolean {
+        if (matchAnyName) return true
         val str = transform.getName(node) ?: return false
         if (str.length == name.length) {
             return str.contentEquals(name)
@@ -38,8 +30,6 @@ data class PropertySegment(
         }
         return false
     }
-        }
-    }
 
     fun <T> match(node: T, transform: Transform<T>): Boolean {
         return matchName(node, transform) && expressions.all { ex -> ex.match(node, transform) }

selector/src/commonMain/kotlin/li/songe/selector/data/PropertyWrapper.kt

@@ -17,7 +17,7 @@ data class PropertyWrapper(
     fun <T> matchTracks(
         node: T,
         transform: Transform<T>,
-        trackNodes: MutableList<T> = mutableListOf(),
+        trackNodes: MutableList<T>,
     ): List<T>? {
         if (!propertySegment.match(node, transform)) {
             return null

selector/src/commonMain/kotlin/li/songe/selector/data/TupleExpression.kt

@@ -1,18 +1,18 @@
 package li.songe.selector.data
 
-import li.songe.selector.NodeSequenceFc
-import li.songe.selector.util.filterIndexes
-
 data class TupleExpression(
     val numbers: List<Int>,
 ) : ConnectExpression() {
-    override val isConstant = numbers.size == 1
     override val minOffset = (numbers.firstOrNull() ?: 1) - 1
+    override val maxOffset = numbers.lastOrNull()
+
     private val indexes = numbers.map { x -> x - 1 }
-    override val traversal: NodeSequenceFc = object : NodeSequenceFc {
-        override fun <T> invoke(sq: Sequence<T?>): Sequence<T?> {
-            return sq.filterIndexes(indexes)
+    override fun checkOffset(offset: Int): Boolean {
+        return indexes.binarySearch(offset) >= 0
     }
+
+    override fun getOffset(i: Int): Int {
+        return numbers[i]
     }
 
     override fun toString(): String {

selector/src/commonMain/kotlin/li/songe/selector/parser/ParserSet.kt

@@ -1,6 +1,5 @@
 package li.songe.selector.parser
 
-import li.songe.selector.ExtSyntaxError
 import li.songe.selector.Selector
 import li.songe.selector.data.BinaryExpression
 import li.songe.selector.data.CompareOperator
@@ -12,9 +11,12 @@ import li.songe.selector.data.Expression
 import li.songe.selector.data.LogicalExpression
 import li.songe.selector.data.LogicalOperator
 import li.songe.selector.data.PolynomialExpression
+import li.songe.selector.data.PrimitiveValue
 import li.songe.selector.data.PropertySegment
 import li.songe.selector.data.PropertyWrapper
 import li.songe.selector.data.TupleExpression
+import li.songe.selector.gkdAssert
+import li.songe.selector.gkdError
 
 internal object ParserSet {
     val whiteCharParser = Parser("\u0020\t\r\n") { source, offset, prefix ->
@@ -27,7 +29,7 @@ internal object ParserSet {
         ParserResult(data, i - offset)
     }
     val whiteCharStrictParser = Parser("\u0020\t\r\n") { source, offset, prefix ->
-        ExtSyntaxError.assert(source, offset, prefix, "whitespace")
+        gkdAssert(source, offset, prefix, "whitespace")
         whiteCharParser(source, offset)
     }
     val nameParser =
@@ -37,7 +39,7 @@ internal object ParserSet {
             if ((s0 != null) && !prefix.contains(s0)) {
                 return@Parser ParserResult("")
             }
-            ExtSyntaxError.assert(source, i, prefix, "*0-9a-zA-Z_")
+            gkdAssert(source, i, prefix, "*0-9a-zA-Z_")
             var data = source[i].toString()
             i++
             if (data == "*") { // 范匹配
@@ -47,7 +49,7 @@ internal object ParserSet {
             while (i < source.length) {
 //                . 不能在开头和结尾
                 if (data[i - offset - 1] == '.') {
-                    ExtSyntaxError.assert(source, i, prefix, "[0-9a-zA-Z_]")
+                    gkdAssert(source, i, prefix, "[0-9a-zA-Z_]")
                 }
                 if (center.contains(source[i])) {
                     data += source[i]
@@ -65,13 +67,13 @@ internal object ParserSet {
                 source.startsWith(
                     subOperator.key, offset
                 )
-            } ?: ExtSyntaxError.throwError(source, offset, "ConnectOperator")
+            } ?: gkdError(source, offset, "ConnectOperator")
             ParserResult(operator, operator.key.length)
         }
 
     val integerParser = Parser("1234567890") { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix, "number")
+        gkdAssert(source, i, prefix, "number")
         var s = ""
         while (i < source.length && prefix.contains(source[i])) {
             s += source[i]
@@ -81,7 +83,7 @@ internal object ParserSet {
             try {
                 s.toInt()
             } catch (e: NumberFormatException) {
-                ExtSyntaxError.throwError(source, offset, "valid format number")
+                gkdError(source, offset, "valid format number")
             }, i - offset
         )
     }
@@ -90,7 +92,7 @@ internal object ParserSet {
     //    [+-][a][n]
     val monomialParser = Parser("+-1234567890n") { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix)
+        gkdAssert(source, i, prefix)
         /**
          * one of 1, -1
          */
@@ -109,7 +111,7 @@ internal object ParserSet {
         }
         i += whiteCharParser(source, i).length
         // [a][n]
-        ExtSyntaxError.assert(source, i, integerParser.prefix + "n")
+        gkdAssert(source, i, integerParser.prefix + "n")
         val coefficient = if (integerParser.prefix.contains(source[i])) {
             val coefficientResult = integerParser(source, i)
             i += coefficientResult.length
@@ -132,23 +134,23 @@ internal object ParserSet {
     // (+-an+-b)
     val polynomialExpressionParser = Parser("(0123456789n") { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix)
+        gkdAssert(source, i, prefix)
         val monomialResultList = mutableListOf<ParserResult<Pair<Int, Int>>>()
         when (source[i]) {
             '(' -> {
                 i++
                 i += whiteCharParser(source, i).length
-                ExtSyntaxError.assert(source, i, monomialParser.prefix)
+                gkdAssert(source, i, monomialParser.prefix)
                 while (source[i] != ')') {
                     if (monomialResultList.size > 0) {
-                        ExtSyntaxError.assert(source, i, "+-")
+                        gkdAssert(source, i, "+-")
                     }
                     val monomialResult = monomialParser(source, i)
                     monomialResultList.add(monomialResult)
                     i += monomialResult.length
                     i += whiteCharParser(source, i).length
                     if (i >= source.length) {
-                        ExtSyntaxError.assert(source, i, ")")
+                        gkdAssert(source, i, ")")
                     }
                 }
                 i++
@@ -167,21 +169,20 @@ internal object ParserSet {
         }
         map.mapKeys { power ->
             if (power.key > 1) {
-                ExtSyntaxError.throwError(source, offset, "power must be 0 or 1")
+                gkdError(source, offset, "power must be 0 or 1")
             }
         }
-        val polynomialExpression = PolynomialExpression(map[1] ?: 0, map[0] ?: 0)
-        polynomialExpression.apply {
-            if ((a <= 0 && numbers.isEmpty()) || (numbers.isNotEmpty() && numbers.first() <= 0)) {
-                ExtSyntaxError.throwError(source, offset, "valid polynomialExpression")
-            }
+        val polynomialExpression = try {
+            PolynomialExpression(map[1] ?: 0, map[0] ?: 0)
+        } catch (e: Exception) {
+            gkdError(source, offset, "valid polynomialExpression")
         }
         ParserResult(polynomialExpression, i - offset)
     }
 
     val tupleExpressionParser = Parser { source, offset, _ ->
         var i = offset
-        ExtSyntaxError.assert(source, i, "(")
+        gkdAssert(source, i, "(")
         i++
         val numbers = mutableListOf<Int>()
         while (i < source.length && source[i] != ')') {
@@ -189,11 +190,11 @@ internal object ParserSet {
             val intResult = integerParser(source, i)
             if (numbers.isEmpty()) {
                 if (intResult.data <= 0) {
-                    ExtSyntaxError.throwError(source, i, "positive integer")
+                    gkdError(source, i, "positive integer")
                 }
             } else {
                 if (intResult.data <= numbers.last()) {
-                    ExtSyntaxError.throwError(source, i, ">" + numbers.last())
+                    gkdError(source, i, ">" + numbers.last())
                 }
             }
             i += intResult.length
@@ -203,10 +204,10 @@ internal object ParserSet {
                 i++
                 i += whiteCharParser(source, i).length
                 // (1,2,3,) or (1, 2, 6)
-                ExtSyntaxError.assert(source, i, integerParser.prefix + ")")
+                gkdAssert(source, i, integerParser.prefix + ")")
             }
         }
-        ExtSyntaxError.assert(source, i, ")")
+        gkdAssert(source, i, ")")
         i++
         ParserResult(TupleExpression(numbers), i - offset)
     }
@@ -246,30 +247,30 @@ internal object ParserSet {
         Parser(CompareOperator.allSubClasses.joinToString("") { it.key }) { source, offset, _ ->
             val operator = CompareOperator.allSubClasses.find { compareOperator ->
                 source.startsWith(compareOperator.key, offset)
-            } ?: ExtSyntaxError.throwError(source, offset, "CompareOperator")
+            } ?: gkdError(source, offset, "CompareOperator")
             ParserResult(operator, operator.key.length)
         }
     val stringParser = Parser("`'\"") { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix)
+        gkdAssert(source, i, prefix)
         val startChar = source[i]
         i++
         if (i >= source.length) {
-            ExtSyntaxError.throwError(source, i, "any char")
+            gkdError(source, i, "any char")
         }
         var data = ""
         while (source[i] != startChar) {
             if (i >= source.length - 1) {
-                ExtSyntaxError.assert(source, i, startChar.toString())
+                gkdAssert(source, i, startChar.toString())
                 break
             }
             // https://www.rfc-editor.org/rfc/inline-errata/rfc7159.html
             if (source[i].code in 0x0000..0x001F) {
-                ExtSyntaxError.throwError(source, i, "0-1f escape char")
+                gkdError(source, i, "0-1f escape char")
             }
             if (source[i] == '\\') {
                 i++
-                ExtSyntaxError.assert(source, i)
+                gkdAssert(source, i)
                 data += when (source[i]) {
                     '\\' -> '\\'
                     '\'' -> '\''
@@ -282,7 +283,7 @@ internal object ParserSet {
                     'x' -> {
                         repeat(2) {
                             i++
-                            ExtSyntaxError.assert(source, i, "0123456789abcdefABCDEF")
+                            gkdAssert(source, i, "0123456789abcdefABCDEF")
                         }
                         source.substring(i - 2 + 1, i + 1).toInt(16).toChar()
                     }
@@ -290,13 +291,13 @@ internal object ParserSet {
                     'u' -> {
                         repeat(4) {
                             i++
-                            ExtSyntaxError.assert(source, i, "0123456789abcdefABCDEF")
+                            gkdAssert(source, i, "0123456789abcdefABCDEF")
                         }
                         source.substring(i - 4 + 1, i + 1).toInt(16).toChar()
                     }
 
                     else -> {
-                        ExtSyntaxError.throwError(source, i, "escape char")
+                        gkdError(source, i, "escape char")
                     }
                 }
             } else {
@@ -312,12 +313,12 @@ internal object ParserSet {
     private val varStr = varPrefix + '.' + ('0'..'9').joinToString("")
     val propertyParser = Parser(varPrefix) { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix)
+        gkdAssert(source, i, prefix)
         var data = source[i].toString()
         i++
         while (i < source.length && varStr.contains(source[i])) {
             if (source[i] == '.') {
-                ExtSyntaxError.assert(source, i + 1, prefix)
+                gkdAssert(source, i + 1, prefix)
             }
             data += source[i]
             i++
@@ -326,51 +327,59 @@ internal object ParserSet {
     }
 
     val valueParser =
-        Parser("tfn" + stringParser.prefix + integerParser.prefix) { source, offset, prefix ->
+        Parser("tfn-" + stringParser.prefix + integerParser.prefix) { source, offset, prefix ->
             var i = offset
-            ExtSyntaxError.assert(source, i, prefix)
-            val value: Any? = when (source[i]) {
+            gkdAssert(source, i, prefix)
+            val value: PrimitiveValue = when (source[i]) {
                 't' -> {
                     i++
                     "rue".forEach { c ->
-                        ExtSyntaxError.assert(source, i, c.toString())
+                        gkdAssert(source, i, c.toString())
                         i++
                     }
-                    true
+                    PrimitiveValue.BooleanValue(true)
                 }
 
                 'f' -> {
                     i++
                     "alse".forEach { c ->
-                        ExtSyntaxError.assert(source, i, c.toString())
+                        gkdAssert(source, i, c.toString())
                         i++
                     }
-                    false
+                    PrimitiveValue.BooleanValue(false)
                 }
 
                 'n' -> {
                     i++
                     "ull".forEach { c ->
-                        ExtSyntaxError.assert(source, i, c.toString())
+                        gkdAssert(source, i, c.toString())
                         i++
                     }
-                    null
+                    PrimitiveValue.NullValue
                 }
 
                 in stringParser.prefix -> {
                     val s = stringParser(source, i)
                     i += s.length
-                    s.data
+                    PrimitiveValue.StringValue(s.data)
+                }
+
+                '-' -> {
+                    i++
+                    gkdAssert(source, i, integerParser.prefix)
+                    val n = integerParser(source, i)
+                    i += n.length
+                    PrimitiveValue.IntValue(-n.data)
                 }
 
                 in integerParser.prefix -> {
                     val n = integerParser(source, i)
                     i += n.length
-                    n.data
+                    PrimitiveValue.IntValue(n.data)
                 }
 
                 else -> {
-                    ExtSyntaxError.throwError(source, i, prefix)
+                    gkdError(source, i, prefix)
                 }
             }
             ParserResult(value, i - offset)
@@ -385,6 +394,9 @@ internal object ParserSet {
         i += operatorResult.length
         i += whiteCharParser(source, i).length
         val valueResult = valueParser(source, i)
+        if (!operatorResult.data.allowType(valueResult.data)) {
+            gkdError(source, i, "valid primitive value")
+        }
         i += valueResult.length
         ParserResult(
             BinaryExpression(
@@ -398,7 +410,7 @@ internal object ParserSet {
         i += whiteCharParser(source, i).length
         val operator = LogicalOperator.allSubClasses.find { logicalOperator ->
             source.startsWith(logicalOperator.key, offset)
-        } ?: ExtSyntaxError.throwError(source, offset, "LogicalOperator")
+        } ?: gkdError(source, offset, "LogicalOperator")
         ParserResult(operator, operator.key.length)
     }
 
@@ -420,21 +432,21 @@ internal object ParserSet {
                             while (i - 1 >= count && source[i - 1 - count] in whiteCharParser.prefix) {
                                 count++
                             }
-                            ExtSyntaxError.throwError(
+                            gkdError(
                                 source, i - count - lastToken.length, "LogicalOperator"
                             )
                         }
                     }
                     i++
                     parserResults.add(expressionParser(source, i).apply { i += length })
-                    ExtSyntaxError.assert(source, i, ")")
+                    gkdAssert(source, i, ")")
                     i++
                 }
 
                 in "|&" -> {
                     parserResults.add(logicalOperatorParser(source, i).apply { i += length })
                     i += whiteCharParser(source, i).length
-                    ExtSyntaxError.assert(source, i, "(" + propertyParser.prefix)
+                    gkdAssert(source, i, "(" + propertyParser.prefix)
                 }
 
                 else -> {
@@ -444,7 +456,7 @@ internal object ParserSet {
             i += whiteCharParser(source, i).length
         }
         if (parserResults.isEmpty()) {
-            ExtSyntaxError.throwError(
+            gkdError(
                 source, i - offset, "Expression"
             )
         }
@@ -486,12 +498,12 @@ internal object ParserSet {
 
     val attrParser = Parser("[") { source, offset, prefix ->
         var i = offset
-        ExtSyntaxError.assert(source, i, prefix)
+        gkdAssert(source, i, prefix)
         i++
         i += whiteCharParser(source, i).length
         val exp = expressionParser(source, i)
         i += exp.length
-        ExtSyntaxError.assert(source, i, "]")
+        gkdAssert(source, i, "]")
         i++
         ParserResult(
             exp.data, i - offset
@@ -515,7 +527,7 @@ internal object ParserSet {
             expressions.add(attrResult.data)
         }
         if (nameResult.length == 0 && expressions.size == 0) {
-            ExtSyntaxError.throwError(source, i, "[")
+            gkdError(source, i, "[")
         }
         ParserResult(PropertySegment(tracked, nameResult.data, expressions), i - offset)
     }
@@ -537,6 +549,7 @@ internal object ParserSet {
                 i += whiteCharStrictParser(source, i).length
                 combinatorResult.data
             } else {
+                // A B
                 ConnectSegment(connectExpression = PolynomialExpression(1, 0))
             }
             val selectorResult = selectorUnitParser(source, i)
@@ -548,7 +561,7 @@ internal object ParserSet {
 
     val endParser = Parser { source, offset, _ ->
         if (offset != source.length) {
-            ExtSyntaxError.throwError(source, offset, "EOF")
+            gkdError(source, offset, "EOF")
         }
         ParserResult(Unit, 0)
     }

selector/src/commonMain/kotlin/li/songe/selector/util/FilterIndexesSequence.kt

@@ -1,42 +0,0 @@
-package li.songe.selector.util
-
-internal class FilterIndexesSequence<T>(
-    private val sequence: Sequence<T>,
-    private val indexes: List<Int>,
-) : Sequence<T> {
-    override fun iterator() = object : Iterator<T> {
-        val iterator = sequence.iterator()
-        var seqIndex = 0 // sequence
-        var i = 0 // indexes
-        var nextItem: T? = null
-
-        fun calcNext(): T? {
-            if (seqIndex > indexes.last()) return null
-            while (iterator.hasNext()) {
-                val item = iterator.next()
-                if (indexes[i] == seqIndex) {
-                    i++
-                    seqIndex++
-                    return item
-                }
-                seqIndex++
-            }
-            return null
-        }
-
-        override fun next(): T {
-            val result = nextItem
-            nextItem = null
-            return result ?: calcNext() ?: throw NoSuchElementException()
-        }
-
-        override fun hasNext(): Boolean {
-            nextItem = nextItem ?: calcNext()
-            return nextItem != null
-        }
-    }
-}
-
-internal fun <T> Sequence<T>.filterIndexes(indexes: List<Int>): Sequence<T> {
-    return FilterIndexesSequence(this, indexes)
-}

selector/src/jvmTest/kotlin/li/songe/selector/ParserTest.kt

@@ -6,12 +6,75 @@ import kotlinx.serialization.json.JsonNull
 import kotlinx.serialization.json.booleanOrNull
 import kotlinx.serialization.json.intOrNull
 import li.songe.selector.parser.ParserSet
-import li.songe.selector.util.filterIndexes
 import org.junit.Test
+import java.io.BufferedOutputStream
 import java.io.File
+import java.io.FileOutputStream
+import java.net.URL
+import java.util.zip.ZipInputStream
 
 
 class ParserTest {
+    private val projectCwd = File("../").absolutePath
+    private val assetsDir = File("$projectCwd/_assets").apply {
+        if (!exists()) {
+            mkdir()
+        }
+    }
+    private val json = Json {
+        ignoreUnknownKeys = true
+    }
+    private val transform = Transform<TestNode>(getAttr = { node, name ->
+        if (name == "_id") return@Transform node.id
+        if (name == "_pid") return@Transform node.pid
+        val value = node.attr[name] ?: return@Transform null
+        if (value is JsonNull) return@Transform null
+        value.intOrNull ?: value.booleanOrNull ?: value.content
+    }, getName = { node -> node.attr["name"]?.content }, getChildren = { node ->
+        node.children.asSequence()
+    }, getParent = { node -> node.parent })
+
+    private val idToSnapshot = HashMap<String, TestNode>()
+
+    private fun getOrDownloadNode(url: String): TestNode {
+        val githubAssetId = url.split('/').last()
+        idToSnapshot[githubAssetId]?.let { return it }
+
+        val file = assetsDir.resolve("$githubAssetId.json")
+        if (!file.exists()) {
+            URL("https://github.com/gkd-kit/inspect/files/${githubAssetId}/file.zip").openStream()
+                .use { inputStream ->
+                    val zipInputStream = ZipInputStream(inputStream)
+                    var entry = zipInputStream.nextEntry
+                    while (entry != null) {
+                        if (entry.name.endsWith(".json")) {
+                            val outputStream = BufferedOutputStream(FileOutputStream(file))
+                            val buffer = ByteArray(1024)
+                            var bytesRead: Int
+                            while (zipInputStream.read(buffer).also { bytesRead = it } != -1) {
+                                outputStream.write(buffer, 0, bytesRead)
+                            }
+                            outputStream.close()
+                            break
+                        }
+                        entry = zipInputStream.nextEntry
+                    }
+                    zipInputStream.closeEntry()
+                    zipInputStream.close()
+                }
+        }
+        val nodes = json.decodeFromString<TestSnapshot>(file.readText()).nodes
+
+        nodes.forEach { node ->
+            node.parent = nodes.getOrNull(node.pid)
+            node.parent?.apply {
+                children.add(node)
+            }
+        }
+        return nodes.first().apply {
+            idToSnapshot[githubAssetId] = this
+        }
+    }
 
     @Test
     fun test_expression() {
@@ -24,42 +87,26 @@ class ParserTest {
     fun string_selector() {
         val text =
             "ImageView < @FrameLayout < LinearLayout < RelativeLayout <n LinearLayout < RelativeLayout + LinearLayout > RelativeLayout > TextView[text\$='广告']"
-        println("trackIndex: " + Selector.parse(text).trackIndex)
+        val selector = Selector.parse(text)
+        println("trackIndex: " + selector.trackIndex)
+        println("canCacheIndex: " + Selector.parse("A + B").canCacheIndex)
+        println("canCacheIndex: " + Selector.parse("A > B - C").canCacheIndex)
     }
 
     @Test
     fun query_selector() {
-        val projectCwd = File("../").absolutePath
         val text =
-            "* > View[isClickable=true][childCount=1][textLen=0] > Image[isClickable=false][textLen=0]"
+            "@[vid=\"rv_home_tab\"] <<(99-n) [vid=\"header_container\"] -(-2n+9) [vid=\"layout_refresh\"] +2 [vid=\"home_v10_frag_content\"]"
         val selector = Selector.parse(text)
         println("selector: $selector")
-
-        val jsonString = File("$projectCwd/_assets/snapshot-1686629593092.json").readText()
-        val json = Json {
-            ignoreUnknownKeys = true
-        }
-        val nodes = json.decodeFromString<TestSnapshot>(jsonString).nodes
-
-        nodes.forEach { node ->
-            node.parent = nodes.getOrNull(node.pid)
-            node.parent?.apply {
-                children.add(node)
-            }
-        }
-        val transform = Transform<TestNode>(getAttr = { node, name ->
-            val value = node.attr[name] ?: return@Transform null
-            if (value is JsonNull) return@Transform null
-            value.intOrNull ?: value.booleanOrNull ?: value.content
-        }, getName = { node -> node.attr["name"]?.content }, getChildren = { node ->
-            node.children.asSequence()
-        }, getParent = { node -> node.parent })
-        val targets = transform.querySelectorAll(nodes.first(), selector).toList()
+        val node = getOrDownloadNode("https://i.gkd.li/i/14325747")
+        val targets = transform.querySelectorAll(node, selector).toList()
         println("target_size: " + targets.size)
+        println("target_id: " + targets.map { t -> t.id })
         assertTrue(targets.size == 1)
         println("id: " + targets.first().id)
 
-        val trackTargets = transform.querySelectorTrackAll(nodes.first(), selector).toList()
+        val trackTargets = transform.querySelectorTrackAll(node, selector).toList()
         println("trackTargets_size: " + trackTargets.size)
         assertTrue(trackTargets.size == 1)
         println(trackTargets.first().mapIndexed { index, testNode ->
@@ -69,45 +116,22 @@ class ParserTest {
 
     @Test
     fun check_parser() {
-        println(Selector.parse("View > Text"))
+        val selector = Selector.parse("View > Text[index>-0]")
+        println("selector: $selector")
+        println("canCacheIndex: " + selector.canCacheIndex)
     }
 
-    private val json = Json {
-        ignoreUnknownKeys = true
-    }
-
-    private fun getTreeNode(name: String): TestNode {
-        val jsonString = File("../_assets/$name").readText()
-        val nodes = json.decodeFromString<TestSnapshot>(jsonString).nodes
-        nodes.forEach { node ->
-            node.parent = nodes.getOrNull(node.pid)
-            node.parent?.apply {
-                children.add(node)
-            }
-        }
-        return nodes.first()
-    }
-
-    private val transform = Transform<TestNode>(getAttr = { node, name ->
-        if (name == "_id") return@Transform node.id
-        if (name == "_pid") return@Transform node.pid
-        val value = node.attr[name] ?: return@Transform null
-        if (value is JsonNull) return@Transform null
-        value.intOrNull ?: value.booleanOrNull ?: value.content
-    }, getName = { node -> node.attr["name"]?.content }, getChildren = { node ->
-        node.children.asSequence()
-    }, getParent = { node -> node.parent })
 
     @Test
     fun check_query() {
-        val text = "@TextView[text^='跳过'] + LinearLayout TextView[text*=`跳转`]"
+        val text = "@TextView - [text=\"签到提醒\"] <<n [vid=\"webViewContainer\"]"
         val selector = Selector.parse(text)
         println("selector: $selector")
         println(selector.trackIndex)
         println(selector.tracks.toList())
 
-        val snapshotNode = getTreeNode("snapshot-1693227637861.json")
-        val targets = transform.querySelectorAll(snapshotNode, selector).toList()
+        val node = getOrDownloadNode("https://i.gkd.li/i/14384152")
+        val targets = transform.querySelectorAll(node, selector).toList()
         println("target_size: " + targets.size)
         println(targets.firstOrNull())
     }
@@ -128,14 +152,6 @@ class ParserTest {
         println("check_quote:$selector")
     }
 
-    @Test
-    fun check_seq() {
-        println(
-            listOf(1, 2, 3, 4, 5, 6, 7, 8).asSequence().filterIndexes(listOf(0, 1, 7, 10)).toList()
-        )
-        println(listOf(0).asSequence().filterIndexes(listOf(0, 1, 7, 10)).toList())
-    }
-
     @Test
     fun check_tuple() {
         val source = "[_id=15] >(1,2,9) X + Z >(7+9n) *"
@@ -143,10 +159,9 @@ class ParserTest {
         val selector = Selector.parse(source)
         println("check_quote:$selector")
 
-        // https://i.gkd.li/import/13247733
         // 1->3, 3->21
         // 1,3->24
-        val snapshotNode = getTreeNode("snapshot-1698997584508.json")
+        val snapshotNode = getOrDownloadNode("https://i.gkd.li/i/13247733")
         val (x1, x2) = (1..6).toList().shuffled().subList(0, 2).sorted()
         val x1N =
             transform.querySelectorAll(snapshotNode, Selector.parse("[_id=15] >$x1 *")).count()
@@ -166,8 +181,7 @@ class ParserTest {
         println("source:$source")
         val selector = Selector.parse(source)
         println("selector:$selector")
-        // https://i.gkd.li/import/13247610
-        val snapshotNode = getTreeNode("snapshot-1698990932472.json")
+        val snapshotNode = getOrDownloadNode("https://i.gkd.li/i/13247610")
         println("result:" + transform.querySelectorAll(snapshotNode, selector).map { n -> n.id }
             .toList())
     }

selector/src/jvmTest/kotlin/li/songe/selector/TestNode.kt

@@ -15,5 +15,9 @@ data class TestNode(
 
     @Transient
     var children: MutableList<TestNode> = mutableListOf()
+
+    override fun toString(): String {
+        return id.toString()
+    }
 }