diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Builders.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmBuilders.kt
similarity index 94%
rename from kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Builders.kt
rename to kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmBuilders.kt
index 67870e07e..14456a426 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Builders.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmBuilders.kt
@@ -18,9 +18,10 @@ internal fun buildName(expression: AsmExpression<*>, collision: Int = 0): String
     return buildName(expression, collision + 1)
 }
 
-inline fun <reified T> AsmExpression<T>.compile(algebra: Algebra<T>): Expression<T> {
+@PublishedApi
+internal inline fun <reified T> AsmExpression<T>.compile(algebra: Algebra<T>): Expression<T> {
     val ctx = AsmGenerationContext(T::class.java, algebra, buildName(this))
-    invoke(ctx)
+    compile(ctx)
     return ctx.generate()
 }
 
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmExpressions.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmExpressions.kt
index 83f3b7754..cd1815f7c 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmExpressions.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmExpressions.kt
@@ -1,14 +1,31 @@
 package scientifik.kmath.asm
 
+import scientifik.kmath.asm.internal.hasSpecific
+import scientifik.kmath.asm.internal.optimize
+import scientifik.kmath.asm.internal.tryInvokeSpecific
 import scientifik.kmath.expressions.Expression
 import scientifik.kmath.expressions.ExpressionAlgebra
 import scientifik.kmath.operations.*
-import kotlin.reflect.full.memberFunctions
-import kotlin.reflect.jvm.jvmName
 
+/**
+ * A function declaration that could be compiled to [AsmGenerationContext].
+ *
+ * @param T the type the stored function returns.
+ */
 interface AsmExpression<T> {
+    /**
+     * Tries to evaluate this function without its variables. This method is intended for optimization.
+     *
+     * @return `null` if the function depends on its variables, the value if the function is a constant.
+     */
     fun tryEvaluate(): T? = null
-    fun invoke(gen: AsmGenerationContext<T>)
+
+    /**
+     * Compiles this declaration.
+     *
+     * @param gen the target [AsmGenerationContext].
+     */
+    fun compile(gen: AsmGenerationContext<T>)
 }
 
 internal class AsmUnaryOperation<T>(private val context: Algebra<T>, private val name: String, expr: AsmExpression<T>) :
@@ -16,13 +33,13 @@ internal class AsmUnaryOperation<T>(private val context: Algebra<T>, private val
     private val expr: AsmExpression<T> = expr.optimize()
     override fun tryEvaluate(): T? = context { unaryOperation(name, expr.tryEvaluate() ?: return@context null) }
 
-    override fun invoke(gen: AsmGenerationContext<T>) {
+    override fun compile(gen: AsmGenerationContext<T>) {
         gen.visitLoadAlgebra()
 
         if (!hasSpecific(context, name, 1))
             gen.visitStringConstant(name)
 
-        expr.invoke(gen)
+        expr.compile(gen)
 
         if (gen.tryInvokeSpecific(context, name, 1))
             return
@@ -54,14 +71,14 @@ internal class AsmBinaryOperation<T>(
         )
     }
 
-    override fun invoke(gen: AsmGenerationContext<T>) {
+    override fun compile(gen: AsmGenerationContext<T>) {
         gen.visitLoadAlgebra()
 
         if (!hasSpecific(context, name, 2))
             gen.visitStringConstant(name)
 
-        first.invoke(gen)
-        second.invoke(gen)
+        first.compile(gen)
+        second.compile(gen)
 
         if (gen.tryInvokeSpecific(context, name, 2))
             return
@@ -79,13 +96,13 @@ internal class AsmBinaryOperation<T>(
 
 internal class AsmVariableExpression<T>(private val name: String, private val default: T? = null) :
     AsmExpression<T> {
-    override fun invoke(gen: AsmGenerationContext<T>): Unit = gen.visitLoadFromVariables(name, default)
+    override fun compile(gen: AsmGenerationContext<T>): Unit = gen.visitLoadFromVariables(name, default)
 }
 
 internal class AsmConstantExpression<T>(private val value: T) :
     AsmExpression<T> {
     override fun tryEvaluate(): T = value
-    override fun invoke(gen: AsmGenerationContext<T>): Unit = gen.visitLoadFromConstants(value)
+    override fun compile(gen: AsmGenerationContext<T>): Unit = gen.visitLoadFromConstants(value)
 }
 
 internal class AsmConstProductExpression<T>(
@@ -98,10 +115,10 @@ internal class AsmConstProductExpression<T>(
 
     override fun tryEvaluate(): T? = context { (expr.tryEvaluate() ?: return@context null) * const }
 
-    override fun invoke(gen: AsmGenerationContext<T>) {
+    override fun compile(gen: AsmGenerationContext<T>) {
         gen.visitLoadAlgebra()
         gen.visitNumberConstant(const)
-        expr.invoke(gen)
+        expr.compile(gen)
 
         gen.visitAlgebraOperation(
             owner = AsmGenerationContext.SPACE_OPERATIONS_CLASS,
@@ -117,7 +134,7 @@ internal class AsmNumberExpression<T>(private val context: NumericAlgebra<T>, pr
     AsmExpression<T> {
     override fun tryEvaluate(): T? = context.number(value)
 
-    override fun invoke(gen: AsmGenerationContext<T>): Unit = gen.visitNumberConstant(value)
+    override fun compile(gen: AsmGenerationContext<T>): Unit = gen.visitNumberConstant(value)
 }
 
 internal abstract class FunctionalCompiledExpression<T> internal constructor(
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmGenerationContext.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmGenerationContext.kt
index cc7874e37..be8da3eff 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmGenerationContext.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmGenerationContext.kt
@@ -5,6 +5,9 @@ import org.objectweb.asm.Label
 import org.objectweb.asm.MethodVisitor
 import org.objectweb.asm.Opcodes
 import scientifik.kmath.asm.AsmGenerationContext.ClassLoader
+import scientifik.kmath.asm.internal.visitLdcOrDConstInsn
+import scientifik.kmath.asm.internal.visitLdcOrFConstInsn
+import scientifik.kmath.asm.internal.visitLdcOrIConstInsn
 import scientifik.kmath.operations.Algebra
 
 /**
@@ -16,7 +19,7 @@ import scientifik.kmath.operations.Algebra
  * @param algebra the algebra the applied AsmExpressions use.
  * @param className the unique class name of new loaded class.
  */
-class AsmGenerationContext<T>(
+class AsmGenerationContext<T> @PublishedApi internal constructor(
     private val classOfT: Class<*>,
     private val algebra: Algebra<T>,
     private val className: String
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/MethodVisitors.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MethodVisitors.kt
similarity index 95%
rename from kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/MethodVisitors.kt
rename to kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MethodVisitors.kt
index aec5a123d..356de4765 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/MethodVisitors.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/MethodVisitors.kt
@@ -1,4 +1,4 @@
-package scientifik.kmath.asm
+package scientifik.kmath.asm.internal
 
 import org.objectweb.asm.MethodVisitor
 import org.objectweb.asm.Opcodes.*
diff --git a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Optimization.kt b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/Optimization.kt
similarity index 88%
rename from kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Optimization.kt
rename to kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/Optimization.kt
index 51048c77c..cd41ff07c 100644
--- a/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Optimization.kt
+++ b/kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/internal/Optimization.kt
@@ -1,8 +1,10 @@
-package scientifik.kmath.asm
+package scientifik.kmath.asm.internal
 
 import org.objectweb.asm.Opcodes
+import scientifik.kmath.asm.AsmConstantExpression
+import scientifik.kmath.asm.AsmExpression
+import scientifik.kmath.asm.AsmGenerationContext
 import scientifik.kmath.operations.Algebra
-import scientifik.kmath.operations.ByteRing
 
 private val methodNameAdapters: Map<String, String> = mapOf("+" to "add", "*" to "multiply", "/" to "divide")