Add pet matcher texture pack support

Closes https://github.com/nea89o/Firmament/issues/29

src/main/kotlin/moe/nea/firmament/features/texturepack/CustomModelOverrideParser.kt

@@ -45,6 +45,7 @@ object CustomModelOverrideParser {
         registerPredicateParser("not", NotPredicate.Parser)
         registerPredicateParser("item", ItemPredicate.Parser)
         registerPredicateParser("extra_attributes", ExtraAttributesPredicate.Parser)
+        registerPredicateParser("pet", PetPredicate.Parser)
     }
 
     private val neverPredicate = listOf(

src/main/kotlin/moe/nea/firmament/features/texturepack/NumberMatcher.kt

@@ -0,0 +1,130 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.features.texturepack
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonPrimitive
+import moe.nea.firmament.util.useMatch
+
+abstract class NumberMatcher {
+    abstract fun test(number: Number): Boolean
+
+
+    companion object {
+        fun parse(jsonElement: JsonElement): NumberMatcher? {
+            if (jsonElement is JsonPrimitive) {
+                if (jsonElement.isString) {
+                    val string = jsonElement.asString
+                    return parseRange(string) ?: parseOperator(string)
+                }
+                if (jsonElement.isNumber) {
+                    val number = jsonElement.asNumber
+                    val hasDecimals = (number.toString().contains("."))
+                    return MatchNumberExact(if (hasDecimals) number.toLong() else number.toDouble())
+                }
+            }
+            return null
+        }
+
+        private val intervalSpec =
+            "(?<beginningOpen>[\\[\\(])(?<beginning>[0-9.]+)?,(?<ending>[0-9.]+)?(?<endingOpen>[\\]\\)])"
+                .toPattern()
+
+        fun parseRange(string: String): RangeMatcher? {
+            intervalSpec.useMatch<Nothing>(string) {
+                // Open in the set-theory sense, meaning does not include its end.
+                val beginningOpen = group("beginningOpen") == "("
+                val endingOpen = group("endingOpen") == ")"
+                val beginning = group("beginning")?.toDouble()
+                val ending = group("ending")?.toDouble()
+                return RangeMatcher(beginning, !beginningOpen, ending, !endingOpen)
+            }
+            return null
+        }
+
+        enum class Operator(val operator: String) {
+            LESS("<") {
+                override fun matches(comparisonResult: Int): Boolean {
+                    return comparisonResult < 0
+                }
+            },
+            LESS_EQUALS("<=") {
+                override fun matches(comparisonResult: Int): Boolean {
+                    return comparisonResult <= 0
+                }
+            },
+            GREATER(">") {
+                override fun matches(comparisonResult: Int): Boolean {
+                    return comparisonResult > 0
+                }
+            },
+            GREATER_EQUALS(">=") {
+                override fun matches(comparisonResult: Int): Boolean {
+                    return comparisonResult >= 0
+                }
+            },
+            ;
+
+            abstract fun matches(comparisonResult: Int): Boolean
+        }
+
+        private val operatorPattern = "(?<operator>${Operator.entries.joinToString("|") {it.operator}})(?<value>[0-9.]+)".toPattern()
+
+        fun parseOperator(string: String): OperatorMatcher? {
+            operatorPattern.useMatch<Nothing>(string) {
+                val operatorName = group("operator")
+                val operator = Operator.entries.find { it.operator == operatorName }!!
+                val value = group("value").toDouble()
+                return OperatorMatcher(operator, value)
+            }
+            return null
+        }
+
+        data class OperatorMatcher(val operator: Operator, val value: Double) : NumberMatcher() {
+            override fun test(number: Number): Boolean {
+                return operator.matches(number.toDouble().compareTo(value))
+            }
+        }
+
+
+        data class MatchNumberExact(val number: Number) : NumberMatcher() {
+            override fun test(number: Number): Boolean {
+                return when (this.number) {
+                    is Double -> number.toDouble() == this.number.toDouble()
+                    else -> number.toLong() == this.number.toLong()
+                }
+            }
+        }
+
+        data class RangeMatcher(
+            val beginning: Double?,
+            val beginningInclusive: Boolean,
+            val ending: Double?,
+            val endingInclusive: Boolean,
+        ) : NumberMatcher() {
+            override fun test(number: Number): Boolean {
+                val value = number.toDouble()
+                if (beginning != null) {
+                    if (beginningInclusive) {
+                        if (value < beginning) return false
+                    } else {
+                        if (value <= beginning) return false
+                    }
+                }
+                if (ending != null) {
+                    if (endingInclusive) {
+                        if (value > ending) return false
+                    } else {
+                        if (value >= ending) return false
+                    }
+                }
+                return true
+            }
+        }
+    }
+
+}

src/main/kotlin/moe/nea/firmament/features/texturepack/PetPredicate.kt

@@ -0,0 +1,71 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.features.texturepack
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonObject
+import net.minecraft.item.ItemStack
+import moe.nea.firmament.repo.ExpLadders
+import moe.nea.firmament.util.petData
+
+class PetPredicate(
+    val petId: StringMatcher?,
+    val tier: RarityMatcher?,
+    val exp: NumberMatcher?,
+    val candyUsed: NumberMatcher?,
+    val level: NumberMatcher?,
+) : FirmamentModelPredicate {
+
+    override fun test(stack: ItemStack): Boolean {
+        val petData = stack.petData ?: return false
+        if (petId != null) {
+            if (!petId.matches(petData.type)) return false
+        }
+        if (exp != null) {
+            if (!exp.test(petData.exp)) return false
+        }
+        if (candyUsed != null) {
+            if (!candyUsed.test(petData.candyUsed)) return false
+        }
+        if (tier != null) {
+            if (!tier.match(petData.tier)) return false
+        }
+        val levelData by lazy(LazyThreadSafetyMode.NONE) {
+            ExpLadders.getExpLadder(petData.type, petData.tier)
+                .getPetLevel(petData.exp)
+        }
+        if (level != null) {
+            if (!level.test(levelData.currentLevel)) return false
+        }
+        return true
+    }
+
+    object Parser : FirmamentModelPredicateParser {
+        override fun parse(jsonElement: JsonElement): FirmamentModelPredicate? {
+            if (jsonElement.isJsonPrimitive) {
+                return PetPredicate(StringMatcher.Equals(jsonElement.asString, false), null, null, null, null)
+            }
+            if (jsonElement !is JsonObject) return null
+            val idMatcher = jsonElement["id"]?.let(StringMatcher::parse)
+            val expMatcher = jsonElement["exp"]?.let(NumberMatcher::parse)
+            val levelMatcher = jsonElement["level"]?.let(NumberMatcher::parse)
+            val candyMatcher = jsonElement["candyUsed"]?.let(NumberMatcher::parse)
+            val tierMatcher = jsonElement["tier"]?.let(RarityMatcher::parse)
+            return PetPredicate(
+                idMatcher,
+                tierMatcher,
+                expMatcher,
+                candyMatcher,
+                levelMatcher,
+            )
+        }
+    }
+
+    override fun toString(): String {
+        return super.toString()
+    }
+}

src/main/kotlin/moe/nea/firmament/features/texturepack/RarityMatcher.kt

@@ -0,0 +1,74 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.features.texturepack
+
+import com.google.gson.JsonElement
+import io.github.moulberry.repo.data.Rarity
+import moe.nea.firmament.util.useMatch
+
+abstract class RarityMatcher {
+    abstract fun match(rarity: Rarity): Boolean
+
+    companion object {
+        fun parse(jsonElement: JsonElement): RarityMatcher {
+            val string = jsonElement.asString
+            val range = parseRange(string)
+            if (range != null) return range
+            return Exact(Rarity.valueOf(string))
+        }
+
+        private val allRarities = Rarity.entries.joinToString("|", "(?:", ")")
+        private val intervalSpec =
+            "(?<beginningOpen>[\\[\\(])(?<beginning>$allRarities)?,(?<ending>$allRarities)?(?<endingOpen>[\\]\\)])"
+                .toPattern()
+
+        fun parseRange(string: String): RangeMatcher? {
+            intervalSpec.useMatch<Nothing>(string) {
+                // Open in the set-theory sense, meaning does not include its end.
+                val beginningOpen = group("beginningOpen") == "("
+                val endingOpen = group("endingOpen") == ")"
+                val beginning = group("beginning")?.let(Rarity::valueOf)
+                val ending = group("ending")?.let(Rarity::valueOf)
+                return RangeMatcher(beginning, !beginningOpen, ending, !endingOpen)
+            }
+            return null
+        }
+
+    }
+
+    data class Exact(val expected: Rarity) : RarityMatcher() {
+        override fun match(rarity: Rarity): Boolean {
+            return rarity == expected
+        }
+    }
+
+    data class RangeMatcher(
+        val beginning: Rarity?,
+        val beginningInclusive: Boolean,
+        val ending: Rarity?,
+        val endingInclusive: Boolean,
+    ) : RarityMatcher() {
+        override fun match(rarity: Rarity): Boolean {
+            if (beginning != null) {
+                if (beginningInclusive) {
+                    if (rarity < beginning) return false
+                } else {
+                    if (rarity <= beginning) return false
+                }
+            }
+            if (ending != null) {
+                if (endingInclusive) {
+                    if (rarity > ending) return false
+                } else {
+                    if (rarity >= ending) return false
+                }
+            }
+            return true
+        }
+    }
+
+}