vm: very basic virtual machine

bytecode/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+  id("gay.pizza.pork.module")
+}
+
+dependencies {
+  implementation(project(":common"))
+}

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/CompiledWorld.kt

@@ -0,0 +1,10 @@
+package gay.pizza.pork.bytecode
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class CompiledWorld(
+  val constantPool: ConstantPool,
+  val symbolTable: SymbolTable,
+  val code: List<Op>
+)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/Constant.kt

@@ -0,0 +1,3 @@
+package gay.pizza.pork.bytecode
+
+class Constant(val id: UInt, val value: ByteArray)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/ConstantPool.kt

@@ -0,0 +1,6 @@
+package gay.pizza.pork.bytecode
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class ConstantPool(val constants: List<ByteArray>)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/MutableConstantPool.kt

@@ -0,0 +1,18 @@
+package gay.pizza.pork.bytecode
+
+class MutableConstantPool {
+  private val pool = mutableListOf<Constant>()
+
+  fun assign(content: ByteArray): UInt {
+    for (constant in pool) {
+      if (constant.value.contentEquals(content)) {
+        return constant.id
+      }
+    }
+    val id = pool.size.toUInt()
+    pool.add(Constant(id, content))
+    return id
+  }
+
+  fun all(): List<Constant> = pool
+}

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/MutableRel.kt

@@ -0,0 +1,3 @@
+package gay.pizza.pork.bytecode
+
+class MutableRel(var rel: UInt)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/Op.kt

@@ -0,0 +1,6 @@
+package gay.pizza.pork.bytecode
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class Op(val code: Opcode, val args: List<UInt>)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/Opcode.kt

@@ -0,0 +1,43 @@
+package gay.pizza.pork.bytecode
+
+enum class Opcode(val id: UByte) {
+  Constant(1u),
+  None(2u),
+  False(3u),
+  True(4u),
+  Pop(5u),
+  Jump(6u),
+  JumpIf(7u),
+  Not(8u),
+  UnaryPlus(9u),
+  UnaryMinus(10u),
+  BinaryNot(11u),
+  And(20u),
+  Native(24u),
+  Return(10u),
+  StoreLocal(16u),
+  LoadLocal(17u),
+  Add(18u),
+  Subtract(19u),
+  Multiply(20u),
+  Divide(21u),
+  CompareEqual(22u),
+  CompareLesser(23u),
+  CompareGreater(24u),
+  CompareLesserEqual(25u),
+  CompareGreaterEqual(26u),
+  Or(27u),
+  BinaryAnd(28u),
+  BinaryOr(29u),
+  BinaryXor(30u),
+  List(31u),
+  Integer(32u),
+  Double(33u),
+  Call(34u),
+  EuclideanModulo(35u),
+  Remainder(36u),
+  Index(37u),
+  ScopeIn(38u),
+  ScopeOut(39u),
+  End(255u),
+}

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/Ops.kt

@@ -0,0 +1,3 @@
+package gay.pizza.pork.bytecode
+
+class Ops(val ops: List<Op>)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/SymbolInfo.kt

@@ -0,0 +1,10 @@
+package gay.pizza.pork.bytecode
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class SymbolInfo(
+  val id: String,
+  val offset: UInt,
+  val size: UInt
+)

bytecode/src/main/kotlin/gay/pizza/pork/bytecode/SymbolTable.kt

@@ -0,0 +1,8 @@
+package gay.pizza.pork.bytecode
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class SymbolTable(
+  val symbols: List<SymbolInfo>
+)