ast codegen: optional support for inlining visit

buildext/src/main/kotlin/gay/pizza/pork/buildext/ast/AstCodegen.kt

@@ -1,3 +1,4 @@
+@file:Suppress("ConstPropertyName")
 package gay.pizza.pork.buildext.ast
 
 import com.fasterxml.jackson.databind.ObjectMapper
@@ -85,6 +86,12 @@ class AstCodegen(val pkg: String, val outputDirectory: Path, val world: AstWorld
       ),
       isImmediateExpression = true
     )
+
+    if (enableVisitAnyInline) {
+      visitAnyFunction.inline = true
+      visitAnyFunction.annotations.add("""@Suppress("NOTHING_TO_INLINE")""")
+    }
+
     visitAnyFunction.body.add("when (node) {")
     for (type in world.typeRegistry.types.filter {
       world.typeRegistry.roleOfType(it) == AstTypeRole.AstNode
@@ -391,6 +398,8 @@ class AstCodegen(val pkg: String, val outputDirectory: Path, val world: AstWorld
   }
 
   companion object {
+    private const val enableVisitAnyInline = false
+
     fun run(pkg: String, astDescriptionFile: Path, outputDirectory: Path) {
       if (!outputDirectory.exists()) {
         outputDirectory.createDirectories()

buildext/src/main/kotlin/gay/pizza/pork/buildext/codegen/KotlinFunction.kt

@@ -2,12 +2,14 @@ package gay.pizza.pork.buildext.codegen
 
 class KotlinFunction(
   val name: String,
+  var annotations: MutableList<String> = mutableListOf(),
   var typeParameters: MutableList<String> = mutableListOf(),
   var extensionOf: String? = null,
   var parameters: MutableList<KotlinParameter> = mutableListOf(),
   var returnType: String? = null,
   var abstract: Boolean = false,
   var open: Boolean = false,
+  var inline: Boolean = false,
   var overridden: Boolean = false,
   var isImmediateExpression: Boolean = false,
   var body: MutableList<String> = mutableListOf(),

buildext/src/main/kotlin/gay/pizza/pork/buildext/codegen/KotlinWriter.kt

@@ -143,6 +143,10 @@ class KotlinWriter() {
   }
 
   fun writeFunction(function: KotlinFunction, index: Int = 0, functionCount: Int = 1, indent: String = ""): Unit = buffer.run {
+    for (annotation in function.annotations) {
+      append(indent)
+      appendLine(annotation)
+    }
     append(indent)
 
     if (function.overridden) {
@@ -157,6 +161,10 @@ class KotlinWriter() {
       append("open ")
     }
 
+    if (function.inline) {
+      append("inline ")
+    }
+
     append("fun ")
     if (function.typeParameters.isNotEmpty()) {
       append("<${function.typeParameters.joinToString(", ")}> ")

parser/src/main/kotlin/gay/pizza/pork/parser/Token.kt

@@ -1,7 +1,8 @@
 package gay.pizza.pork.parser
 
 class Token(val type: TokenType, val start: Int, val text: String) {
-  override fun toString(): String = "$start ${type.name} '${text.replace("\n", "\\n")}'"
+  override fun toString(): String =
+    "$start ${type.name} '${text.replace("\n", "\\n")}'"
 
   companion object {
     fun endOfFile(size: Int): Token =