Merge kmath-asm and kmath-ast modules, make all the ExpressionAlgebras concise and consistent, implement new-styled builders both for ASM and F. expressions

kmath-asm/build.gradle.kts

@@ -1,10 +0,0 @@
-plugins {
-    id("scientifik.jvm")
-}
-
-dependencies {
-    api(project(path = ":kmath-core"))
-    implementation("org.ow2.asm:asm:8.0.1")
-    implementation("org.ow2.asm:asm-commons:8.0.1")
-    implementation(kotlin("reflect"))
-}

kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/AsmExpressionSpaces.kt

@@ -1,74 +0,0 @@
-package scientifik.kmath.expressions.asm
-
-import scientifik.kmath.expressions.ExpressionAlgebra
-import scientifik.kmath.operations.*
-
-open class AsmExpressionAlgebra<T>(val algebra: Algebra<T>) :
-    Algebra<AsmExpression<T>>,
-    ExpressionAlgebra<T, AsmExpression<T>> {
-    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
-        AsmUnaryOperation(algebra, operation, arg)
-
-    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(algebra, operation, left, right)
-
-    override fun const(value: T): AsmExpression<T> = AsmConstantExpression(value)
-    override fun variable(name: String, default: T?): AsmExpression<T> = AsmVariableExpression(name, default)
-}
-
-open class AsmExpressionSpace<T>(
-    val space: Space<T>
-) : AsmExpressionAlgebra<T>(space), Space<AsmExpression<T>> {
-    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
-        AsmUnaryOperation(algebra, operation, arg)
-
-    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(algebra, operation, left, right)
-
-    override val zero: AsmExpression<T> = AsmConstantExpression(space.zero)
-
-    override fun add(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(space, SpaceOperations.PLUS_OPERATION, a, b)
-
-    override fun multiply(a: AsmExpression<T>, k: Number): AsmExpression<T> = AsmConstProductExpression(space, a, k)
-    operator fun AsmExpression<T>.plus(arg: T): AsmExpression<T> = this + const(arg)
-    operator fun AsmExpression<T>.minus(arg: T): AsmExpression<T> = this - const(arg)
-    operator fun T.plus(arg: AsmExpression<T>): AsmExpression<T> = arg + this
-    operator fun T.minus(arg: AsmExpression<T>): AsmExpression<T> = arg - this
-}
-
-open class AsmExpressionRing<T>(private val ring: Ring<T>) : AsmExpressionSpace<T>(ring), Ring<AsmExpression<T>> {
-    override val one: AsmExpression<T>
-        get() = const(this.ring.one)
-
-    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
-        AsmUnaryOperation(algebra, operation, arg)
-
-    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(algebra, operation, left, right)
-
-    override fun number(value: Number): AsmExpression<T> = const(ring { one * value })
-
-    override fun multiply(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(space, RingOperations.TIMES_OPERATION, a, b)
-
-    operator fun AsmExpression<T>.times(arg: T): AsmExpression<T> = this * const(arg)
-    operator fun T.times(arg: AsmExpression<T>): AsmExpression<T> = arg * this
-}
-
-open class AsmExpressionField<T>(private val field: Field<T>) :
-    AsmExpressionRing<T>(field),
-    Field<AsmExpression<T>> {
-
-    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
-        AsmUnaryOperation(algebra, operation, arg)
-
-    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(algebra, operation, left, right)
-
-    override fun divide(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
-        AsmBinaryOperation(field, FieldOperations.DIV_OPERATION, a, b)
-
-    operator fun AsmExpression<T>.div(arg: T): AsmExpression<T> = this / const(arg)
-    operator fun T.div(arg: AsmExpression<T>): AsmExpression<T> = arg / this
-}

kmath-asm/src/main/kotlin/scientifik/kmath/expressions/asm/Builders.kt

@@ -1,50 +0,0 @@
-package scientifik.kmath.expressions.asm
-
-import scientifik.kmath.expressions.Expression
-import scientifik.kmath.expressions.ExpressionAlgebra
-import scientifik.kmath.operations.*
-
-@PublishedApi
-internal fun buildName(expression: AsmExpression<*>, collision: Int = 0): String {
-    val name = "scientifik.kmath.expressions.generated.AsmCompiledExpression_${expression.hashCode()}_$collision"
-
-    try {
-        Class.forName(name)
-    } catch (ignored: ClassNotFoundException) {
-        return name
-    }
-
-    return buildName(expression, collision + 1)
-}
-
-
-inline fun <reified T, E : ExpressionAlgebra<T, AsmExpression<T>>> asm(
-    i: E,
-    algebra: Algebra<T>,
-    block: E.() -> AsmExpression<T>
-): Expression<T> {
-    val expression = i.block().optimize()
-    val ctx = AsmGenerationContext(T::class.java, algebra, buildName(expression))
-    expression.invoke(ctx)
-    return ctx.generate()
-}
-
-inline fun <reified T> buildAsmAlgebra(
-    algebra: Algebra<T>,
-    block: AsmExpressionAlgebra<T>.() -> AsmExpression<T>
-): Expression<T> = asm(AsmExpressionAlgebra(algebra), algebra, block)
-
-inline fun <reified T> buildAsmSpace(
-    algebra: Space<T>,
-    block: AsmExpressionSpace<T>.() -> AsmExpression<T>
-): Expression<T> = asm(AsmExpressionSpace(algebra), algebra, block)
-
-inline fun <reified T> buildAsmRing(
-    algebra: Ring<T>,
-    block: AsmExpressionRing<T>.() -> AsmExpression<T>
-): Expression<T> = asm(AsmExpressionRing(algebra), algebra, block)
-
-inline fun <reified T> buildAsmField(
-    algebra: Field<T>,
-    block: AsmExpressionField<T>.() -> AsmExpression<T>
-): Expression<T> = asm(AsmExpressionField(algebra), algebra, block)

kmath-asm/src/test/kotlin/scientifik/kmath/expressions/AsmTest.kt

@@ -1,43 +0,0 @@
-package scientifik.kmath.expressions
-
-import scientifik.kmath.expressions.asm.AsmExpression
-import scientifik.kmath.expressions.asm.AsmExpressionField
-import scientifik.kmath.expressions.asm.buildAsmField
-import scientifik.kmath.operations.RealField
-import kotlin.test.Test
-import kotlin.test.assertEquals
-
-class AsmTest {
-    private fun testDoubleExpression(
-        expected: Double?,
-        arguments: Map<String, Double> = emptyMap(),
-        block: AsmExpressionField<Double>.() -> AsmExpression<Double>
-    ): Unit = assertEquals(expected = expected, actual = buildAsmField(RealField, block)(arguments))
-
-    @Test
-    fun testConstantsSum(): Unit = testDoubleExpression(16.0) { const(8.0) + 8.0 }
-
-    @Test
-    fun testVarsSum(): Unit = testDoubleExpression(1000.0, mapOf("x" to 500.0)) { variable("x") + 500.0 }
-
-    @Test
-    fun testProduct(): Unit = testDoubleExpression(24.0) { const(4.0) * const(6.0) }
-
-    @Test
-    fun testConstantProduct(): Unit = testDoubleExpression(984.0) { const(8.0) * 123 }
-
-    @Test
-    fun testVarsConstantProductVar(): Unit = testDoubleExpression(984.0, mapOf("x" to 8.0)) { variable("x") * 123 }
-
-    @Test
-    fun testSubtraction(): Unit = testDoubleExpression(2.0) { const(4.0) - 2.0 }
-
-    @Test
-    fun testDivision(): Unit = testDoubleExpression(64.0) { const(128.0) / 2 }
-
-    @Test
-    fun testDirectUnaryCall(): Unit = testDoubleExpression(64.0) { unaryOperation("+", const(64.0)) }
-
-    @Test
-    fun testDirectBinaryCall(): Unit = testDoubleExpression(4096.0) { binaryOperation("*", const(64.0), const(64.0)) }
-}

kmath-ast/build.gradle.kts

@@ -1,10 +1,5 @@
-plugins {
+plugins { id("scientifik.mpp") }
-    id("scientifik.mpp")
+repositories { maven("https://dl.bintray.com/hotkeytlt/maven") }
-}
-
-repositories{
-    maven("https://dl.bintray.com/hotkeytlt/maven")
-}
 
 kotlin.sourceSets {
     commonMain {
@@ -13,9 +8,22 @@ kotlin.sourceSets {
             implementation("com.github.h0tk3y.betterParse:better-parse-multiplatform:0.4.0-alpha-3")
         }
     }
-    jvmMain{
+
-        dependencies{
+    jvmMain {
+        dependencies {
             implementation("com.github.h0tk3y.betterParse:better-parse-jvm:0.4.0-alpha-3")
+            implementation("org.ow2.asm:asm:8.0.1")
+            implementation("org.ow2.asm:asm-commons:8.0.1")
+            implementation(kotlin("reflect"))
         }
     }
-}
+
+    jvmTest {
+        dependencies {
+            implementation(kotlin("test"))
+            implementation(kotlin("test-junit5"))
+        }
+    }
+}
+
+tasks.withType<Test> { useJUnitPlatform() }

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmExpressions.kt

@@ -1,9 +1,8 @@
-package scientifik.kmath.expressions.asm
+package scientifik.kmath.asm
 
 import scientifik.kmath.expressions.Expression
-import scientifik.kmath.operations.Algebra
+import scientifik.kmath.expressions.ExpressionAlgebra
-import scientifik.kmath.operations.Space
+import scientifik.kmath.operations.*
-import scientifik.kmath.operations.invoke
 import kotlin.reflect.full.memberFunctions
 import kotlin.reflect.jvm.jvmName
 
@@ -109,11 +108,13 @@ internal class AsmBinaryOperation<T>(
     }
 }
 
-internal class AsmVariableExpression<T>(private val name: String, private val default: T? = null) : AsmExpression<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)
 }
 
-internal class AsmConstantExpression<T>(private val value: T) : AsmExpression<T> {
+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)
 }
@@ -141,9 +142,88 @@ internal class AsmConstProductExpression<T>(
     }
 }
 
+internal class AsmNumberExpression<T>(private val context: NumericAlgebra<T>, private val value: Number) : AsmExpression<T> {
+    override fun tryEvaluate(): T? = context.number(value)
+
+    override fun invoke(gen: AsmGenerationContext<T>): Unit = gen.visitNumberConstant(value)
+}
+
 internal abstract class FunctionalCompiledExpression<T> internal constructor(
     @JvmField protected val algebra: Algebra<T>,
     @JvmField protected val constants: Array<Any>
 ) : Expression<T> {
     abstract override fun invoke(arguments: Map<String, T>): T
 }
+
+interface AsmExpressionAlgebra<T, A : NumericAlgebra<T>> : NumericAlgebra<AsmExpression<T>>,
+    ExpressionAlgebra<T, AsmExpression<T>> {
+    val algebra: A
+    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, operation, left, right)
+
+    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
+        AsmUnaryOperation(algebra, operation, arg)
+
+    override fun number(value: Number): AsmExpression<T> = AsmNumberExpression(algebra, value)
+    override fun const(value: T): AsmExpression<T> = AsmConstantExpression(value)
+    override fun variable(name: String, default: T?): AsmExpression<T> = AsmVariableExpression(name, default)
+}
+
+open class AsmExpressionSpace<T, A>(override val algebra: A) : AsmExpressionAlgebra<T, A>,
+    Space<AsmExpression<T>> where  A : Space<T>, A : NumericAlgebra<T> {
+    override val zero: AsmExpression<T>
+        get() = const(algebra.zero)
+
+    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, operation, left, right)
+
+    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
+        AsmUnaryOperation(algebra, operation, arg)
+
+    override fun add(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, SpaceOperations.PLUS_OPERATION, a, b)
+
+    override fun multiply(a: AsmExpression<T>, k: Number): AsmExpression<T> = AsmConstProductExpression(algebra, a, k)
+    operator fun AsmExpression<T>.plus(arg: T): AsmExpression<T> = this + const(arg)
+    operator fun AsmExpression<T>.minus(arg: T): AsmExpression<T> = this - const(arg)
+    operator fun T.plus(arg: AsmExpression<T>): AsmExpression<T> = arg + this
+    operator fun T.minus(arg: AsmExpression<T>): AsmExpression<T> = arg - this
+}
+
+open class AsmExpressionRing<T, A>(override val algebra: A) : AsmExpressionSpace<T, A>(algebra),
+    Ring<AsmExpression<T>> where  A : Ring<T>, A : NumericAlgebra<T> {
+    override val one: AsmExpression<T>
+        get() = const(algebra.one)
+
+    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
+        AsmUnaryOperation(algebra, operation, arg)
+
+    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, operation, left, right)
+
+    override fun number(value: Number): AsmExpression<T> = const(algebra { one * value })
+
+    override fun multiply(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, RingOperations.TIMES_OPERATION, a, b)
+
+    operator fun AsmExpression<T>.times(arg: T): AsmExpression<T> = this * const(arg)
+    operator fun T.times(arg: AsmExpression<T>): AsmExpression<T> = arg * this
+}
+
+open class AsmExpressionField<T, A>(override val algebra: A) :
+    AsmExpressionRing<T, A>(algebra),
+    Field<AsmExpression<T>> where A : Field<T>, A : NumericAlgebra<T> {
+
+    override fun unaryOperation(operation: String, arg: AsmExpression<T>): AsmExpression<T> =
+        AsmUnaryOperation(algebra, operation, arg)
+
+    override fun binaryOperation(operation: String, left: AsmExpression<T>, right: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, operation, left, right)
+
+    override fun divide(a: AsmExpression<T>, b: AsmExpression<T>): AsmExpression<T> =
+        AsmBinaryOperation(algebra, FieldOperations.DIV_OPERATION, a, b)
+
+    operator fun AsmExpression<T>.div(arg: T): AsmExpression<T> = this / const(arg)
+    operator fun T.div(arg: AsmExpression<T>): AsmExpression<T> = arg / this
+}
+

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/AsmGenerationContext.kt

@@ -1,4 +1,4 @@
-package scientifik.kmath.expressions.asm
+package scientifik.kmath.asm
 
 import org.objectweb.asm.ClassWriter
 import org.objectweb.asm.Label
@@ -15,7 +15,8 @@ class AsmGenerationContext<T>(
         internal fun defineClass(name: String?, b: ByteArray): Class<*> = defineClass(name, b, 0, b.size)
     }
 
-    private val classLoader: ClassLoader = ClassLoader(javaClass.classLoader)
+    private val classLoader: ClassLoader =
+        ClassLoader(javaClass.classLoader)
 
     @Suppress("PrivatePropertyName")
     private val T_ALGEBRA_CLASS: String = algebra.javaClass.name.replace(oldChar = '.', newChar = '/')
@@ -236,7 +237,8 @@ class AsmGenerationContext<T>(
         }
 
         visitLdcInsn(name)
-        visitMethodInsn(Opcodes.INVOKEINTERFACE, MAP_CLASS, "get", "(L$OBJECT_CLASS;)L$OBJECT_CLASS;", true)
+        visitMethodInsn(Opcodes.INVOKEINTERFACE,
+            MAP_CLASS, "get", "(L$OBJECT_CLASS;)L$OBJECT_CLASS;", true)
         visitCastToT()
     }
 
@@ -275,7 +277,7 @@ class AsmGenerationContext<T>(
         )
 
         internal const val FUNCTIONAL_COMPILED_EXPRESSION_CLASS =
-            "scientifik/kmath/expressions/asm/FunctionalCompiledExpression"
+            "scientifik/kmath/asm/FunctionalCompiledExpression"
 
         internal const val MAP_CLASS = "java/util/Map"
         internal const val OBJECT_CLASS = "java/lang/Object"

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Builders.kt

@@ -0,0 +1,53 @@
+package scientifik.kmath.asm
+
+import scientifik.kmath.ast.MST
+import scientifik.kmath.ast.evaluate
+import scientifik.kmath.expressions.Expression
+import scientifik.kmath.operations.*
+
+@PublishedApi
+internal fun buildName(expression: AsmExpression<*>, collision: Int = 0): String {
+    val name = "scientifik.kmath.expressions.generated.AsmCompiledExpression_${expression.hashCode()}_$collision"
+
+    try {
+        Class.forName(name)
+    } catch (ignored: ClassNotFoundException) {
+        return name
+    }
+
+    return buildName(expression, collision + 1)
+}
+
+inline fun <reified T> AsmExpression<T>.compile(algebra: Algebra<T>): Expression<T> {
+    val ctx = AsmGenerationContext(T::class.java, algebra, buildName(this))
+    invoke(ctx)
+    return ctx.generate()
+}
+
+inline fun <reified T, A : NumericAlgebra<T>, E : AsmExpressionAlgebra<T, A>> A.asm(
+    expressionAlgebra: E,
+    block: E.() -> AsmExpression<T>
+): Expression<T> = expressionAlgebra.block().compile(expressionAlgebra.algebra)
+
+inline fun <reified T, A : NumericAlgebra<T>, E : AsmExpressionAlgebra<T, A>> A.asm(
+    expressionAlgebra: E,
+    ast: MST
+): Expression<T> = asm(expressionAlgebra) { evaluate(ast) }
+
+inline fun <reified T, A> A.asmSpace(block: AsmExpressionSpace<T, A>.() -> AsmExpression<T>): Expression<T> where A : NumericAlgebra<T>, A : Space<T> =
+    AsmExpressionSpace(this).let { it.block().compile(it.algebra) }
+
+inline fun <reified T, A> A.asmSpace(ast: MST): Expression<T> where A : NumericAlgebra<T>, A : Space<T> =
+    asmSpace { evaluate(ast) }
+
+inline fun <reified T, A> A.asmRing(block: AsmExpressionRing<T, A>.() -> AsmExpression<T>): Expression<T> where A : NumericAlgebra<T>, A : Ring<T> =
+    AsmExpressionRing(this).let { it.block().compile(it.algebra) }
+
+inline fun <reified T, A> A.asmRing(ast: MST): Expression<T> where A : NumericAlgebra<T>, A : Ring<T> =
+    asmRing { evaluate(ast) }
+
+inline fun <reified T, A> A.asmField(block: AsmExpressionField<T, A>.() -> AsmExpression<T>): Expression<T> where A : NumericAlgebra<T>, A : Field<T> =
+    AsmExpressionField(this).let { it.block().compile(it.algebra) }
+
+inline fun <reified T, A> A.asmField(ast: MST): Expression<T> where A : NumericAlgebra<T>, A : Field<T> =
+    asmRing { evaluate(ast) }

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/MethodVisitors.kt

@@ -1,4 +1,4 @@
-package scientifik.kmath.expressions.asm
+package scientifik.kmath.asm
 
 import org.objectweb.asm.MethodVisitor
 import org.objectweb.asm.Opcodes.*

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/asm/Optimization.kt

@@ -1,4 +1,4 @@
-package scientifik.kmath.expressions.asm
+package scientifik.kmath.asm
 
 @PublishedApi
 internal fun <T> AsmExpression<T>.optimize(): AsmExpression<T> {

kmath-ast/src/jvmMain/kotlin/scientifik/kmath/ast/asm.kt

@@ -1,23 +0,0 @@
-package scientifik.kmath.ast
-
-import scientifik.kmath.expressions.Expression
-import scientifik.kmath.operations.Algebra
-import scientifik.kmath.operations.NumericAlgebra
-
-//TODO stubs for asm generation
-
-interface AsmExpression<T>
-
-interface AsmExpressionAlgebra<T, A : Algebra<T>> : NumericAlgebra<AsmExpression<T>> {
-    val algebra: A
-}
-
-fun <T> AsmExpression<T>.compile(): Expression<T> = TODO()
-
-//TODO add converter for functional expressions
-
-inline fun <reified T : Any, A : Algebra<T>> A.asm(
-    block: AsmExpressionAlgebra<T, A>.() -> AsmExpression<T>
-): Expression<T> = TODO()
-
-inline fun <reified T : Any, A : Algebra<T>> A.asm(ast: MST): Expression<T> = asm { evaluate(ast) }

kmath-ast/src/jvmTest/kotlin/scietifik/kmath/ast/AsmTest.kt

@@ -0,0 +1,18 @@
+package scietifik.kmath.ast
+
+import org.junit.jupiter.api.Test
+import scientifik.kmath.asm.asmField
+import scientifik.kmath.ast.parseMath
+import scientifik.kmath.expressions.invoke
+import scientifik.kmath.operations.Complex
+import scientifik.kmath.operations.ComplexField
+import kotlin.test.assertEquals
+
+class AsmTest {
+    @Test
+    fun parsedExpression() {
+        val mst = "2+2*(2+2)".parseMath()
+        val res = ComplexField.asmField(mst)()
+        assertEquals(Complex(10.0, 0.0), res)
+    }
+}

kmath-ast/src/jvmTest/kotlin/scietifik/kmath/ast/ParserTest.kt

@@ -1,17 +1,17 @@
 package scietifik.kmath.ast
 
-import org.junit.jupiter.api.Assertions.assertEquals
 import org.junit.jupiter.api.Test
 import scientifik.kmath.ast.evaluate
 import scientifik.kmath.ast.parseMath
 import scientifik.kmath.operations.Complex
 import scientifik.kmath.operations.ComplexField
+import kotlin.test.assertEquals
 
-internal class ParserTest{
+internal class ParserTest {
     @Test
-    fun parsedExpression(){
+    fun parsedExpression() {
         val mst = "2+2*(2+2)".parseMath()
         val res = ComplexField.evaluate(mst)
-        assertEquals(Complex(10.0,0.0), res)
+        assertEquals(Complex(10.0, 0.0), res)
     }
-}
+}

kmath-core/src/commonMain/kotlin/scientifik/kmath/expressions/Builders.kt

@@ -1,30 +1,23 @@
 package scientifik.kmath.expressions
 
-import scientifik.kmath.operations.Algebra
 import scientifik.kmath.operations.Field
 import scientifik.kmath.operations.Ring
 import scientifik.kmath.operations.Space
 
-/**
- * Create a functional expression on this [Algebra]
- */
-fun <T> Algebra<T>.buildExpression(block: FunctionalExpressionAlgebra<T>.() -> Expression<T>): Expression<T> =
-    FunctionalExpressionAlgebra(this).run(block)
-
 /**
  * Create a functional expression on this [Space]
  */
-fun <T> Space<T>.buildExpression(block: FunctionalExpressionSpace<T>.() -> Expression<T>): Expression<T> =
+fun <T> Space<T>.buildExpression(block: FunctionalExpressionSpace<T, Space<T>>.() -> Expression<T>): Expression<T> =
     FunctionalExpressionSpace(this).run(block)
 
 /**
  * Create a functional expression on this [Ring]
  */
-fun <T> Ring<T>.buildExpression(block: FunctionalExpressionRing<T>.() -> Expression<T>): Expression<T> =
+fun <T> Ring<T>.buildExpression(block: FunctionalExpressionRing<T, Ring<T>>.() -> Expression<T>): Expression<T> =
     FunctionalExpressionRing(this).run(block)
 
 /**
  * Create a functional expression on this [Field]
  */
-fun <T> Field<T>.buildExpression(block: FunctionalExpressionField<T>.() -> Expression<T>): Expression<T> =
+fun <T> Field<T>.buildExpression(block: FunctionalExpressionField<T, Field<T>>.() -> Expression<T>): Expression<T> =
     FunctionalExpressionField(this).run(block)

kmath-core/src/commonMain/kotlin/scientifik/kmath/expressions/FunctionalExpressions.kt

@@ -26,48 +26,55 @@ internal class FunctionalConstantExpression<T>(val value: T) : Expression<T> {
     override fun invoke(arguments: Map<String, T>): T = value
 }
 
-internal class FunctionalConstProductExpression<T>(val context: Space<T>, val expr: Expression<T>, val const: Number) :
+internal class FunctionalConstProductExpression<T>(
+    val context: Space<T>,
+    val expr: Expression<T>,
+    val const: Number
+) :
     Expression<T> {
     override fun invoke(arguments: Map<String, T>): T = context.multiply(expr.invoke(arguments), const)
 }
 
-open class FunctionalExpressionAlgebra<T>(val algebra: Algebra<T>) :
+interface FunctionalExpressionAlgebra<T, A : Algebra<T>> : ExpressionAlgebra<T, Expression<T>> {
-    Algebra<Expression<T>>,
+    val algebra: A
-    ExpressionAlgebra<T, Expression<T>> {
-    override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
-        FunctionalUnaryOperation(algebra, operation, arg)
 
     override fun binaryOperation(operation: String, left: Expression<T>, right: Expression<T>): Expression<T> =
         FunctionalBinaryOperation(algebra, operation, left, right)
 
+    override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
+        FunctionalUnaryOperation(algebra, operation, arg)
+
     override fun const(value: T): Expression<T> = FunctionalConstantExpression(value)
     override fun variable(name: String, default: T?): Expression<T> = FunctionalVariableExpression(name, default)
 }
 
-open class FunctionalExpressionSpace<T>(val space: Space<T>) :
+open class FunctionalExpressionSpace<T, A>(override val algebra: A) : FunctionalExpressionAlgebra<T, A>,
-    FunctionalExpressionAlgebra<T>(space),
+    Space<Expression<T>> where  A : Space<T> {
-    Space<Expression<T>> {
+    override val zero: Expression<T>
-    override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
+        get() = const(algebra.zero)
-        FunctionalUnaryOperation(algebra, operation, arg)
 
     override fun binaryOperation(operation: String, left: Expression<T>, right: Expression<T>): Expression<T> =
         FunctionalBinaryOperation(algebra, operation, left, right)
 
-    override val zero: Expression<T> = FunctionalConstantExpression(space.zero)
+    override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
+        FunctionalUnaryOperation(algebra, operation, arg)
 
     override fun add(a: Expression<T>, b: Expression<T>): Expression<T> =
-        FunctionalBinaryOperation(space, SpaceOperations.PLUS_OPERATION, a, b)
+        FunctionalBinaryOperation(algebra, SpaceOperations.PLUS_OPERATION, a, b)
+
+    override fun multiply(a: Expression<T>, k: Number): Expression<T> =
+        FunctionalConstProductExpression(algebra, a, k)
 
-    override fun multiply(a: Expression<T>, k: Number): Expression<T> = FunctionalConstProductExpression(space, a, k)
     operator fun Expression<T>.plus(arg: T): Expression<T> = this + const(arg)
     operator fun Expression<T>.minus(arg: T): Expression<T> = this - const(arg)
     operator fun T.plus(arg: Expression<T>): Expression<T> = arg + this
     operator fun T.minus(arg: Expression<T>): Expression<T> = arg - this
 }
 
-open class FunctionalExpressionRing<T>(val ring: Ring<T>) : FunctionalExpressionSpace<T>(ring), Ring<Expression<T>> {
+open class FunctionalExpressionRing<T, A>(override val algebra: A) : FunctionalExpressionSpace<T, A>(algebra),
+    Ring<Expression<T>> where  A : Ring<T>, A : NumericAlgebra<T> {
     override val one: Expression<T>
-        get() = const(this.ring.one)
+        get() = const(algebra.one)
 
     override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
         FunctionalUnaryOperation(algebra, operation, arg)
@@ -75,18 +82,18 @@ open class FunctionalExpressionRing<T>(val ring: Ring<T>) : FunctionalExpression
     override fun binaryOperation(operation: String, left: Expression<T>, right: Expression<T>): Expression<T> =
         FunctionalBinaryOperation(algebra, operation, left, right)
 
-    override fun number(value: Number): Expression<T> = const(ring { one * value })
+    override fun number(value: Number): Expression<T> = const(algebra { one * value })
 
     override fun multiply(a: Expression<T>, b: Expression<T>): Expression<T> =
-        FunctionalBinaryOperation(space, RingOperations.TIMES_OPERATION, a, b)
+        FunctionalBinaryOperation(algebra, RingOperations.TIMES_OPERATION, a, b)
 
     operator fun Expression<T>.times(arg: T): Expression<T> = this * const(arg)
     operator fun T.times(arg: Expression<T>): Expression<T> = arg * this
 }
 
-open class FunctionalExpressionField<T>(val field: Field<T>) :
+open class FunctionalExpressionField<T, A>(override val algebra: A) :
-    FunctionalExpressionRing<T>(field),
+    FunctionalExpressionRing<T, A>(algebra),
-    Field<Expression<T>> {
+    Field<Expression<T>> where A : Field<T>, A : NumericAlgebra<T> {
 
     override fun unaryOperation(operation: String, arg: Expression<T>): Expression<T> =
         FunctionalUnaryOperation(algebra, operation, arg)
@@ -95,7 +102,7 @@ open class FunctionalExpressionField<T>(val field: Field<T>) :
         FunctionalBinaryOperation(algebra, operation, left, right)
 
     override fun divide(a: Expression<T>, b: Expression<T>): Expression<T> =
-        FunctionalBinaryOperation(space, FieldOperations.DIV_OPERATION, a, b)
+        FunctionalBinaryOperation(algebra, FieldOperations.DIV_OPERATION, a, b)
 
     operator fun Expression<T>.div(arg: T): Expression<T> = this / const(arg)
     operator fun T.div(arg: Expression<T>): Expression<T> = arg / this

settings.gradle.kts

@@ -45,6 +45,5 @@ include(
     ":kmath-for-real",
     ":kmath-geometry",
     ":kmath-ast",
-    ":kmath-asm",
     ":examples"
 )