[WIP] Config parser

src/main/kotlin/mods/betterfoliage/config/BlockConfig.kt

@@ -0,0 +1,40 @@
+package mods.betterfoliage.config
+
+import mods.betterfoliage.config.match.Node
+import mods.betterfoliage.config.match.parser.BlockConfigParser
+import mods.betterfoliage.config.match.parser.ParseException
+import mods.betterfoliage.config.match.parser.TokenMgrError
+import mods.betterfoliage.util.HasLogger
+import mods.betterfoliage.util.stripStart
+import net.minecraft.resources.IResourceManager
+import net.minecraft.util.ResourceLocation
+import org.apache.logging.log4j.Level
+import org.apache.logging.log4j.Level.ERROR
+
+class BlockConfig : HasLogger() {
+    lateinit var rules: List<Node.MatchAll>
+
+    fun readConfig(manager: IResourceManager) {
+        val configs = manager.listResources("config/betterfoliage") { it.endsWith(".rules") }
+        rules = configs.flatMap { configLocation ->
+            val resource = manager.getResource(configLocation)
+            val parser = BlockConfigParser(resource.inputStream)
+                .apply { configFile = configLocation.stripStart("config/betterfoliage/").toString() }
+            try {
+                mutableListOf<Node.MatchAll>().apply { parser.matchFile(this) }
+            } catch (e: ParseException) {
+                parseError(e, configLocation)
+            } catch (e: TokenMgrError) {
+                parseError(e, configLocation)
+            }
+        }
+    }
+
+    fun parseError(e: Throwable, location: ResourceLocation): List<Node.MatchAll> {
+        "Error parsing block config $location: ${e.message}".let {
+            logger.log(ERROR, it)
+            detailLogger.log(ERROR, it)
+        }
+        return emptyList()
+    }
+}