split out the code optimizers into own project submodule

.idea/kotlinc.xml

@@ -1,6 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="Kotlin2JvmCompilerArguments">
-    <option name="jvmTarget" value="11" />
-  </component>
-</project>

.idea/libraries/KotlinJavaRuntime__2_.xml

@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="KotlinJavaRuntime (2)">
+    <CLASSES>
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-sources.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect-sources.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/libraries/KotlinJavaRuntime__3_.xml

@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="KotlinJavaRuntime (3)">
+    <CLASSES>
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-stdlib-sources.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-reflect-sources.jar!/" />
+      <root url="jar://$KOTLIN_BUNDLED$/lib/kotlin-test-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/modules.xml

@@ -2,8 +2,10 @@
 <project version="4">
   <component name="ProjectModuleManager">
     <modules>
+      <module fileurl="file://$PROJECT_DIR$/codeOptimizers/codeOptimizers.iml" filepath="$PROJECT_DIR$/codeOptimizers/codeOptimizers.iml" />
       <module fileurl="file://$PROJECT_DIR$/compiler/compiler.iml" filepath="$PROJECT_DIR$/compiler/compiler.iml" />
       <module fileurl="file://$PROJECT_DIR$/compilerAst/compilerAst.iml" filepath="$PROJECT_DIR$/compilerAst/compilerAst.iml" />
+      <module fileurl="file://$PROJECT_DIR$/compilerInterfaces/compilerInterfaces.iml" filepath="$PROJECT_DIR$/compilerInterfaces/compilerInterfaces.iml" />
       <module fileurl="file://$PROJECT_DIR$/dbusCompilerService/dbusCompilerService.iml" filepath="$PROJECT_DIR$/dbusCompilerService/dbusCompilerService.iml" />
       <module fileurl="file://$PROJECT_DIR$/docs/docs.iml" filepath="$PROJECT_DIR$/docs/docs.iml" />
       <module fileurl="file://$PROJECT_DIR$/examples/examples.iml" filepath="$PROJECT_DIR$/examples/examples.iml" />

codeOptimizers/build.gradle

@@ -0,0 +1,66 @@
+
+plugins {
+    id 'java'
+    id 'application'
+    id "org.jetbrains.kotlin.jvm"
+}
+
+targetCompatibility = 11
+sourceCompatibility = 11
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+dependencies {
+    implementation project(':compilerInterfaces')
+    implementation project(':compilerAst')
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    // implementation "org.jetbrains.kotlin:kotlin-reflect"
+
+}
+
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "11"
+        // verbose = true
+        // freeCompilerArgs += "-XXLanguage:+NewInference"
+    }
+}
+
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+}
+
+sourceSets {
+    main {
+        java {
+            srcDirs = ["${project.projectDir}/src"]
+        }
+        resources {
+            srcDirs = ["${project.projectDir}/res"]
+        }
+    }
+    test {
+        java {
+            srcDirs = ["${project.projectDir}/test"]
+        }
+    }
+}
+
+test {
+    // Enable JUnit 5 (Gradle 4.6+).
+    useJUnitPlatform()
+
+    // Always run tests, even when nothing changed.
+    dependsOn 'cleanTest'
+
+    // Show test results.
+    testLogging {
+        events "skipped", "failed"
+    }
+}

codeOptimizers/codeOptimizers.iml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="openjdk-11" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime (2)" level="project" />
+    <orderEntry type="module" module-name="compilerInterfaces" />
+    <orderEntry type="module" module-name="compilerAst" />
+  </component>
+</module>

codeOptimizers/src/prog8/optimizer/BinExprSplitter.kt

@@ -9,11 +9,11 @@ import prog8.ast.statements.AssignTarget
 import prog8.ast.statements.Assignment
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.astprocessing.isInRegularRAMof
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.isInRegularRAMof
 
 
-internal class BinExprSplitter(private val program: Program, private val compTarget: ICompilationTarget) : AstWalker() {
+class BinExprSplitter(private val program: Program, private val compTarget: ICompilationTarget) : AstWalker() {
 
 //    override fun after(decl: VarDecl, parent: Node): Iterable<IAstModification> {
 // TODO somehow if we do this, the resulting code for some programs (cube3d.p8) gets hundreds of bytes larger...:

codeOptimizers/src/prog8/optimizer/CallGraph.kt

@@ -10,7 +10,7 @@ import prog8.ast.expressions.FunctionCall
 import prog8.ast.expressions.IdentifierReference
 import prog8.ast.statements.*
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 
 
 class CallGraph(private val program: Program) : IAstVisitor {

codeOptimizers/src/prog8/optimizer/ConstantFoldingOptimizer.kt

@@ -12,7 +12,7 @@ import prog8.ast.walk.IAstModification
 import kotlin.math.pow
 
 
-internal class ConstantFoldingOptimizer(private val program: Program) : AstWalker() {
+class ConstantFoldingOptimizer(private val program: Program) : AstWalker() {
 
     override fun before(memread: DirectMemoryRead, parent: Node): Iterable<IAstModification> {
         // @( &thing )  -->  thing

codeOptimizers/src/prog8/optimizer/ConstantIdentifierReplacer.kt

@@ -7,14 +7,14 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.astprocessing.size
+import prog8.compilerinterface.IErrorReporter
-import prog8.compiler.astprocessing.toConstantIntegerRange
+import prog8.compilerinterface.size
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.toConstantIntegerRange
 
 // Fix up the literal value's type to match that of the vardecl
 //   (also check range literal operands types before they get expanded into arrays for instance)
-internal class VarConstantValueTypeAdjuster(private val program: Program, private val errors: IErrorReporter) : AstWalker() {
+class VarConstantValueTypeAdjuster(private val program: Program, private val errors: IErrorReporter) : AstWalker() {
 
     override fun after(decl: VarDecl, parent: Node): Iterable<IAstModification> {
 

codeOptimizers/src/prog8/optimizer/ExpressionSimplifier.kt

@@ -22,7 +22,7 @@ import kotlin.math.pow
  */
 
 
-internal class ExpressionSimplifier(private val program: Program) : AstWalker() {
+class ExpressionSimplifier(private val program: Program) : AstWalker() {
     private val powersOfTwo = (1..16).map { (2.0).pow(it) }.toSet()
     private val negativePowersOfTwo = powersOfTwo.map { -it }.toSet()
 

codeOptimizers/src/prog8/optimizer/Extensions.kt

@@ -2,11 +2,11 @@ package prog8.optimizer
 
 import prog8.ast.IBuiltinFunctions
 import prog8.ast.Program
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.IErrorReporter
 
 
-internal fun Program.constantFold(errors: IErrorReporter, compTarget: ICompilationTarget) {
+fun Program.constantFold(errors: IErrorReporter, compTarget: ICompilationTarget) {
     val valuetypefixer = VarConstantValueTypeAdjuster(this, errors)
     valuetypefixer.visit(this)
     if(errors.noErrors()) {
@@ -40,9 +40,10 @@ internal fun Program.constantFold(errors: IErrorReporter, compTarget: ICompilati
 }
 
 
-internal fun Program.optimizeStatements(errors: IErrorReporter,
+fun Program.optimizeStatements(errors: IErrorReporter,
                                functions: IBuiltinFunctions,
-                                        compTarget: ICompilationTarget): Int {
+                               compTarget: ICompilationTarget
+): Int {
     val optimizer = StatementOptimizer(this, errors, functions, compTarget)
     optimizer.visit(this)
     val optimizationCount = optimizer.applyModifications()
@@ -52,13 +53,13 @@ internal fun Program.optimizeStatements(errors: IErrorReporter,
     return optimizationCount
 }
 
-internal fun Program.simplifyExpressions() : Int {
+fun Program.simplifyExpressions() : Int {
     val opti = ExpressionSimplifier(this)
     opti.visit(this)
     return opti.applyModifications()
 }
 
-internal fun Program.splitBinaryExpressions(compTarget: ICompilationTarget) : Int {
+fun Program.splitBinaryExpressions(compTarget: ICompilationTarget) : Int {
     val opti = BinExprSplitter(this, compTarget)
     opti.visit(this)
     return opti.applyModifications()

codeOptimizers/src/prog8/optimizer/StatementOptimizer.kt

@@ -10,18 +10,19 @@ import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.astprocessing.size
+import prog8.compilerinterface.IErrorReporter
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.size
 import kotlin.math.floor
 
 internal const val retvarName = "prog8_retval"
 
 
-internal class StatementOptimizer(private val program: Program,
+class StatementOptimizer(private val program: Program,
                                   private val errors: IErrorReporter,
                                   private val functions: IBuiltinFunctions,
-                                  private val compTarget: ICompilationTarget) : AstWalker() {
+                                  private val compTarget: ICompilationTarget
+) : AstWalker() {
 
     private val subsThatNeedReturnVariable = mutableSetOf<Triple<IStatementContainer, DataType, Position>>()
 

codeOptimizers/src/prog8/optimizer/UnusedCodeRemover.kt

@@ -9,14 +9,15 @@ import prog8.ast.expressions.TypecastExpression
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.astprocessing.isInRegularRAMof
+import prog8.compilerinterface.IErrorReporter
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.isInRegularRAMof
 
 
-internal class UnusedCodeRemover(private val program: Program,
+class UnusedCodeRemover(private val program: Program,
                         private val errors: IErrorReporter,
-                                 private val compTarget: ICompilationTarget): AstWalker() {
+                        private val compTarget: ICompilationTarget
+): AstWalker() {
 
     private val callgraph = CallGraph(program)
 

compiler/build.gradle

@@ -18,6 +18,8 @@ repositories {
 def prog8version = rootProject.file('compiler/res/version.txt').text.trim()
 
 dependencies {
+    implementation project(':compilerInterfaces')
+    implementation project(':codeOptimizers')
     implementation project(':compilerAst')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     // implementation "org.jetbrains.kotlin:kotlin-reflect"

compiler/compiler.iml

@@ -22,5 +22,7 @@
     <orderEntry type="library" name="jetbrains.kotlinx.cli.jvm" level="project" />
     <orderEntry type="library" name="junit.jupiter" level="project" />
     <orderEntry type="library" name="michael.bull.kotlin.result.jvm" level="project" />
+    <orderEntry type="module" module-name="codeOptimizers" />
+    <orderEntry type="module" module-name="compilerInterfaces" />
   </component>
 </module>

compiler/src/prog8/compiler/BeforeAsmGenerationAstChanger.kt

@@ -10,9 +10,11 @@ import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.astprocessing.isInRegularRAMof
 import prog8.compiler.astprocessing.isSubroutineParameter
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.CompilerException
+import prog8.compilerinterface.ICompilationTarget
+import prog8.compilerinterface.IErrorReporter
+import prog8.compilerinterface.isInRegularRAMof
 
 
 internal class BeforeAsmGenerationAstChanger(val program: Program, val errors: IErrorReporter, private val compTarget: ICompilationTarget) : AstWalker() {

compiler/src/prog8/compiler/Compiler.kt

@@ -3,7 +3,6 @@ package prog8.compiler
 import com.github.michaelbull.result.*
 import prog8.ast.AstToSourceTextConverter
 import prog8.ast.IBuiltinFunctions
-import prog8.ast.IMemSizer
 import prog8.ast.Program
 import prog8.ast.base.AstException
 import prog8.ast.base.Position
@@ -14,8 +13,8 @@ import prog8.compiler.astprocessing.*
 import prog8.compiler.functions.*
 import prog8.compiler.target.C64Target
 import prog8.compiler.target.Cx16Target
-import prog8.compiler.target.ICompilationTarget
+import prog8.compiler.target.cpu6502.codegen.AsmGen
-import prog8.compiler.target.asmGeneratorFor
+import prog8.compilerinterface.*
 import prog8.optimizer.*
 import prog8.parser.ParseError
 import prog8.parser.ParsingFailedError
@@ -29,38 +28,6 @@ import kotlin.io.path.nameWithoutExtension
 import kotlin.system.measureTimeMillis
 
 
-enum class OutputType {
-    RAW,
-    PRG
-}
-
-enum class LauncherType {
-    BASIC,
-    NONE
-}
-
-enum class ZeropageType {
-    BASICSAFE,
-    FLOATSAFE,
-    KERNALSAFE,
-    FULL,
-    DONTUSE
-}
-
-data class CompilationOptions(val output: OutputType,
-                              val launcher: LauncherType,
-                              val zeropage: ZeropageType,
-                              val zpReserved: List<IntRange>,
-                              val floats: Boolean,
-                              val noSysInit: Boolean,
-                              val compTarget: ICompilationTarget) {
-    var slowCodegenWarnings = false
-    var optimize = false
-}
-
-
-class CompilerException(message: String?) : Exception(message)
-
 class CompilationResult(val success: Boolean,
                         val programAst: Program,
                         val programName: String,
@@ -347,7 +314,8 @@ private sealed class WriteAssemblyResult {
 private fun writeAssembly(programAst: Program,
                           errors: IErrorReporter,
                           outputDir: Path,
-                          compilerOptions: CompilationOptions): WriteAssemblyResult {
+                          compilerOptions: CompilationOptions
+): WriteAssemblyResult {
     // asm generation directly from the Ast
     programAst.processAstBeforeAsmGeneration(errors, compilerOptions.compTarget)
     errors.report()
@@ -396,3 +364,16 @@ internal fun loadAsmIncludeFile(filename: String, source: SourceCode): Result<St
             Ok(SourceCode.File(Path(filename)).readText())
     }
 }
+
+internal fun asmGeneratorFor(
+    compTarget: ICompilationTarget,
+    program: Program,
+    errors: IErrorReporter,
+    zp: Zeropage,
+    options: CompilationOptions,
+    outputDir: Path
+): IAssemblyGenerator
+{
+    // at the moment we only have one code generation backend (for 6502 and 65c02)
+    return AsmGen(program, errors, zp, options, compTarget, outputDir)
+}

compiler/src/prog8/compiler/ErrorReporting.kt

@@ -1,19 +1,7 @@
 package prog8.compiler
 
 import prog8.ast.base.Position
-import prog8.parser.ParsingFailedError
+import prog8.compilerinterface.IErrorReporter
-
-
-interface IErrorReporter {
-    fun err(msg: String, position: Position)
-    fun warn(msg: String, position: Position)
-    fun noErrors(): Boolean
-    fun report()
-    fun finalizeNumErrors(numErrors: Int, numWarnings: Int) {
-        if(numErrors>0)
-            throw ParsingFailedError("There are $numErrors errors and $numWarnings warnings.")
-    }
-}
 
 
 internal class ErrorReporter: IErrorReporter {

compiler/src/prog8/compiler/ModuleImporter.kt

@@ -7,6 +7,7 @@ import prog8.ast.base.Position
 import prog8.ast.base.SyntaxError
 import prog8.ast.statements.Directive
 import prog8.ast.statements.DirectiveArg
+import prog8.compilerinterface.IErrorReporter
 import prog8.parser.Prog8Parser
 import prog8.parser.SourceCode
 import java.io.File

compiler/src/prog8/compiler/astprocessing/AstChecker.kt

@@ -8,12 +8,12 @@ import prog8.ast.base.*
 import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.CompilationOptions
+import prog8.compilerinterface.CompilationOptions
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.ZeropageType
+import prog8.compilerinterface.IErrorReporter
+import prog8.compilerinterface.ZeropageType
 import prog8.compiler.functions.BuiltinFunctions
 import prog8.compiler.functions.builtinFunctionReturnType
-import prog8.compiler.target.ICompilationTarget
 import java.io.CharConversionException
 import java.io.File
 import java.util.*

compiler/src/prog8/compiler/astprocessing/AstExtensions.kt

@@ -3,65 +3,16 @@ package prog8.compiler.astprocessing
 import prog8.ast.Node
 import prog8.ast.Program
 import prog8.ast.base.DataType
-import prog8.ast.base.VarDeclType
 import prog8.ast.expressions.*
-import prog8.ast.statements.AssignTarget
 import prog8.ast.statements.Directive
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
+import prog8.compiler.*
 import prog8.compiler.BeforeAsmGenerationAstChanger
-import prog8.compiler.CompilationOptions
+import prog8.compilerinterface.CompilationOptions
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.IStringEncoding
+import prog8.compilerinterface.IErrorReporter
-import prog8.compiler.target.ICompilationTarget
+import prog8.compilerinterface.IStringEncoding
-import prog8.compiler.target.IMachineDefinition
-import kotlin.math.abs
-
-
-fun RangeExpr.size(encoding: IStringEncoding): Int? {
-    val fromLv = (from as? NumericLiteralValue)
-    val toLv = (to as? NumericLiteralValue)
-    if(fromLv==null || toLv==null)
-        return null
-    return toConstantIntegerRange(encoding)?.count()
-}
-
-fun RangeExpr.toConstantIntegerRange(encoding: IStringEncoding): IntProgression? {
-    val fromVal: Int
-    val toVal: Int
-    val fromString = from as? StringLiteralValue
-    val toString = to as? StringLiteralValue
-    if(fromString!=null && toString!=null ) {
-        // string range -> int range over character values
-        fromVal = encoding.encodeString(fromString.value, fromString.altEncoding)[0].toInt()
-        toVal = encoding.encodeString(toString.value, fromString.altEncoding)[0].toInt()
-    } else {
-        val fromLv = from as? NumericLiteralValue
-        val toLv = to as? NumericLiteralValue
-        if(fromLv==null || toLv==null)
-            return null         // non-constant range
-        // integer range
-        fromVal = fromLv.number.toInt()
-        toVal = toLv.number.toInt()
-    }
-    val stepVal = (step as? NumericLiteralValue)?.number?.toInt() ?: 1
-    return makeRange(fromVal, toVal, stepVal)
-}
-
-private fun makeRange(fromVal: Int, toVal: Int, stepVal: Int): IntProgression {
-    return when {
-        fromVal <= toVal -> when {
-            stepVal <= 0 -> IntRange.EMPTY
-            stepVal == 1 -> fromVal..toVal
-            else -> fromVal..toVal step stepVal
-        }
-        else -> when {
-            stepVal >= 0 -> IntRange.EMPTY
-            stepVal == -1 -> fromVal downTo toVal
-            else -> fromVal downTo toVal step abs(stepVal)
-        }
-    }
-}
 
 
 internal fun Program.checkValid(compilerOptions: CompilationOptions, errors: IErrorReporter, compTarget: ICompilationTarget) {
@@ -143,7 +94,6 @@ internal fun Program.variousCleanups(program: Program, errors: IErrorReporter) {
         process.applyModifications()
 }
 
-
 internal fun Program.moveMainAndStartToFirst() {
     // the module containing the program entrypoint is moved to the first in the sequence.
     // the "main" block containing the entrypoint is moved to the top in there,
@@ -174,51 +124,6 @@ internal fun Program.moveMainAndStartToFirst() {
     }
 }
 
-internal fun AssignTarget.isInRegularRAMof(machine: IMachineDefinition): Boolean {
-    val memAddr = memoryAddress
-    val arrayIdx = arrayindexed
-    val ident = identifier
-    when {
-        memAddr != null -> {
-            return when (memAddr.addressExpression) {
-                is NumericLiteralValue -> {
-                    machine.isRegularRAMaddress((memAddr.addressExpression as NumericLiteralValue).number.toInt())
-                }
-                is IdentifierReference -> {
-                    val program = definingModule.program
-                    val decl = (memAddr.addressExpression as IdentifierReference).targetVarDecl(program)
-                    if ((decl?.type == VarDeclType.VAR || decl?.type == VarDeclType.CONST) && decl.value is NumericLiteralValue)
-                        machine.isRegularRAMaddress((decl.value as NumericLiteralValue).number.toInt())
-                    else
-                        false
-                }
-                else -> false
-            }
-        }
-        arrayIdx != null -> {
-            val program = definingModule.program
-            val targetStmt = arrayIdx.arrayvar.targetVarDecl(program)
-            return if (targetStmt?.type == VarDeclType.MEMORY) {
-                val addr = targetStmt.value as? NumericLiteralValue
-                if (addr != null)
-                    machine.isRegularRAMaddress(addr.number.toInt())
-                else
-                    false
-            } else true
-        }
-        ident != null -> {
-            val program = definingModule.program
-            val decl = ident.targetVarDecl(program)!!
-            return if (decl.type == VarDeclType.MEMORY && decl.value is NumericLiteralValue)
-                machine.isRegularRAMaddress((decl.value as NumericLiteralValue).number.toInt())
-            else
-                true
-        }
-        else -> return true
-    }
-}
-
-
 internal fun IdentifierReference.isSubroutineParameter(program: Program): Boolean {
     val vardecl = this.targetVarDecl(program)
     if(vardecl!=null && vardecl.autogeneratedDontRemove) {

compiler/src/prog8/compiler/astprocessing/AstIdentifiersChecker.kt

@@ -4,9 +4,9 @@ import prog8.ast.base.Position
 import prog8.ast.expressions.StringLiteralValue
 import prog8.ast.statements.*
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.ICompilationTarget
+import prog8.compilerinterface.IErrorReporter
 import prog8.compiler.functions.BuiltinFunctions
-import prog8.compiler.target.ICompilationTarget
 
 internal class AstIdentifiersChecker(private val errors: IErrorReporter, private val compTarget: ICompilationTarget) : IAstVisitor {
     private var blocks = mutableMapOf<String, Block>()

compiler/src/prog8/compiler/astprocessing/StatementReorderer.kt

@@ -10,7 +10,7 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 import prog8.compiler.functions.BuiltinFunctions
 
 

compiler/src/prog8/compiler/astprocessing/TypecastsAdder.kt

@@ -8,7 +8,7 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 import prog8.compiler.functions.BuiltinFunctions
 
 

compiler/src/prog8/compiler/astprocessing/VariousCleanups.kt

@@ -10,7 +10,7 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstModification
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 
 
 internal class VariousCleanups(val program: Program, val errors: IErrorReporter): AstWalker() {

compiler/src/prog8/compiler/astprocessing/VerifyFunctionArgTypes.kt

@@ -8,7 +8,7 @@ import prog8.ast.expressions.FunctionCall
 import prog8.ast.expressions.TypecastExpression
 import prog8.ast.statements.*
 import prog8.ast.walk.IAstVisitor
-import prog8.compiler.CompilerException
+import prog8.compilerinterface.CompilerException
 import prog8.compiler.functions.BuiltinFunctions
 
 class VerifyFunctionArgTypes(val program: Program) : IAstVisitor {

compiler/src/prog8/compiler/functions/BuiltinFunctions.kt

@@ -1,11 +1,11 @@
 package prog8.compiler.functions
 
-import prog8.ast.IMemSizer
 import prog8.ast.Program
 import prog8.ast.base.*
 import prog8.ast.expressions.*
 import prog8.ast.statements.VarDecl
-import prog8.compiler.CompilerException
+import prog8.compilerinterface.CompilerException
+import prog8.compiler.IMemSizer
 import kotlin.math.*
 
 

compiler/src/prog8/compiler/target/C64Target.kt

@@ -0,0 +1,35 @@
+package prog8.compiler.target
+
+import com.github.michaelbull.result.fold
+import prog8.ast.base.ByteDatatypes
+import prog8.ast.base.DataType
+import prog8.ast.base.PassByReferenceDatatypes
+import prog8.ast.base.WordDatatypes
+import prog8.compiler.target.c64.C64MachineDefinition
+import prog8.compiler.target.cbm.Petscii
+import prog8.compilerinterface.*
+
+
+internal object C64Target: ICompilationTarget {
+    override val name = "c64"
+    override val machine = C64MachineDefinition
+    override fun encodeString(str: String, altEncoding: Boolean): List<Short> {
+        val coded = if (altEncoding) Petscii.encodeScreencode(str, true) else Petscii.encodePetscii(str, true)
+        return coded.fold(
+            failure = { throw it },
+            success = { it }
+        )
+    }
+    override fun decodeString(bytes: List<Short>, altEncoding: Boolean) =
+        if (altEncoding) Petscii.decodeScreencode(bytes, true) else Petscii.decodePetscii(bytes, true)
+
+    override fun memorySize(dt: DataType): Int {
+        return when(dt) {
+            in ByteDatatypes -> 1
+            in WordDatatypes -> 2
+            DataType.FLOAT -> machine.FLOAT_MEM_SIZE
+            in PassByReferenceDatatypes -> machine.POINTER_MEM_SIZE
+            else -> -9999999
+        }
+    }
+}

compiler/src/prog8/compiler/target/Cx16Target.kt

@@ -0,0 +1,36 @@
+package prog8.compiler.target
+
+import com.github.michaelbull.result.fold
+import prog8.ast.base.ByteDatatypes
+import prog8.ast.base.DataType
+import prog8.ast.base.PassByReferenceDatatypes
+import prog8.ast.base.WordDatatypes
+import prog8.compiler.target.cbm.Petscii
+import prog8.compiler.target.cx16.CX16MachineDefinition
+import prog8.compilerinterface.*
+
+
+internal object Cx16Target: ICompilationTarget {
+    override val name = "cx16"
+    override val machine = CX16MachineDefinition
+    override fun encodeString(str: String, altEncoding: Boolean): List<Short> {
+        val coded= if (altEncoding) Petscii.encodeScreencode(str, true) else Petscii.encodePetscii(str, true)
+        return coded.fold(
+            failure = { throw it },
+            success = { it }
+        )
+    }
+    override fun decodeString(bytes: List<Short>, altEncoding: Boolean) =
+        if (altEncoding) Petscii.decodeScreencode(bytes, true) else Petscii.decodePetscii(bytes, true)
+
+    override fun memorySize(dt: DataType): Int {
+        return when(dt) {
+            in ByteDatatypes -> 1
+            in WordDatatypes -> 2
+            DataType.FLOAT -> machine.FLOAT_MEM_SIZE
+            in PassByReferenceDatatypes -> machine.POINTER_MEM_SIZE
+            else -> -9999999
+        }
+    }
+}
+

compiler/src/prog8/compiler/target/IAssemblyGenerator.kt

@@ -1,17 +0,0 @@
-package prog8.compiler.target
-
-import prog8.compiler.CompilationOptions
-
-internal interface IAssemblyGenerator {
-    fun compileToAssembly(): IAssemblyProgram
-}
-
-internal const val generatedLabelPrefix = "_prog8_label_"
-internal const val subroutineFloatEvalResultVar1 = "_prog8_float_eval_result1"
-internal const val subroutineFloatEvalResultVar2 = "_prog8_float_eval_result2"
-
-internal interface IAssemblyProgram {
-    val valid: Boolean
-    val name: String
-    fun assemble(options: CompilationOptions): Int
-}

compiler/src/prog8/compiler/target/ICompilationTarget.kt

@@ -1,89 +0,0 @@
-package prog8.compiler.target
-
-import com.github.michaelbull.result.fold
-import prog8.ast.IMemSizer
-import prog8.ast.Program
-import prog8.ast.base.ByteDatatypes
-import prog8.ast.base.DataType
-import prog8.ast.base.PassByReferenceDatatypes
-import prog8.ast.base.WordDatatypes
-import prog8.compiler.CompilationOptions
-import prog8.compiler.IErrorReporter
-import prog8.compiler.IStringEncoding
-import prog8.compiler.Zeropage
-import prog8.compiler.target.c64.C64MachineDefinition
-import prog8.compiler.target.cbm.Petscii
-import prog8.compiler.target.cpu6502.codegen.AsmGen
-import prog8.compiler.target.cx16.CX16MachineDefinition
-import java.nio.file.Path
-
-
-interface ICompilationTarget: IStringEncoding, IMemSizer {
-    val name: String
-    val machine: IMachineDefinition
-    override fun encodeString(str: String, altEncoding: Boolean): List<Short>
-    override fun decodeString(bytes: List<Short>, altEncoding: Boolean): String
-}
-
-
-internal object C64Target: ICompilationTarget {
-    override val name = "c64"
-    override val machine = C64MachineDefinition
-    override fun encodeString(str: String, altEncoding: Boolean): List<Short> {
-        val coded = if (altEncoding) Petscii.encodeScreencode(str, true) else Petscii.encodePetscii(str, true)
-        return coded.fold(
-            failure = { throw it },
-            success = { it }
-        )
-    }
-    override fun decodeString(bytes: List<Short>, altEncoding: Boolean) =
-        if (altEncoding) Petscii.decodeScreencode(bytes, true) else Petscii.decodePetscii(bytes, true)
-
-    override fun memorySize(dt: DataType): Int {
-        return when(dt) {
-            in ByteDatatypes -> 1
-            in WordDatatypes -> 2
-            DataType.FLOAT -> machine.FLOAT_MEM_SIZE
-            in PassByReferenceDatatypes -> machine.POINTER_MEM_SIZE
-            else -> -9999999
-        }
-    }
-}
-
-internal object Cx16Target: ICompilationTarget {
-    override val name = "cx16"
-    override val machine = CX16MachineDefinition
-    override fun encodeString(str: String, altEncoding: Boolean): List<Short> {
-        val coded= if (altEncoding) Petscii.encodeScreencode(str, true) else Petscii.encodePetscii(str, true)
-        return coded.fold(
-            failure = { throw it },
-            success = { it }
-        )
-    }
-    override fun decodeString(bytes: List<Short>, altEncoding: Boolean) =
-        if (altEncoding) Petscii.decodeScreencode(bytes, true) else Petscii.decodePetscii(bytes, true)
-
-    override fun memorySize(dt: DataType): Int {
-        return when(dt) {
-            in ByteDatatypes -> 1
-            in WordDatatypes -> 2
-            DataType.FLOAT -> machine.FLOAT_MEM_SIZE
-            in PassByReferenceDatatypes -> machine.POINTER_MEM_SIZE
-            else -> -9999999
-        }
-    }
-}
-
-
-internal fun asmGeneratorFor(
-    compTarget: ICompilationTarget,
-    program: Program,
-    errors: IErrorReporter,
-    zp: Zeropage,
-    options: CompilationOptions,
-    outputDir: Path
-): IAssemblyGenerator
-{
-    // at the moment we only have one code generation backend (for 6502 and 65c02)
-    return AsmGen(program, errors, zp, options, compTarget, outputDir)
-}

compiler/src/prog8/compiler/target/c64/C64MachineDefinition.kt

@@ -1,10 +1,8 @@
 package prog8.compiler.target.c64
 
 import prog8.compiler.*
-import prog8.compiler.target.CpuType
-import prog8.compiler.target.IMachineDefinition
-import prog8.compiler.target.IMachineFloat
 import prog8.compiler.target.cbm.viceMonListPostfix
+import prog8.compilerinterface.*
 import java.io.IOException
 import java.nio.file.Path
 import kotlin.math.absoluteValue
@@ -146,7 +144,8 @@ internal object C64MachineDefinition: IMachineDefinition {
         }
     }
 
-    internal data class Mflpt5(val b0: Short, val b1: Short, val b2: Short, val b3: Short, val b4: Short): IMachineFloat {
+    internal data class Mflpt5(val b0: Short, val b1: Short, val b2: Short, val b3: Short, val b4: Short):
+        IMachineFloat {
 
         companion object {
             val zero = Mflpt5(0, 0, 0, 0, 0)

compiler/src/prog8/compiler/target/cbm/AssemblyProgram.kt

@@ -1,9 +1,9 @@
 package prog8.compiler.target.cbm
 
-import prog8.compiler.CompilationOptions
+import prog8.compilerinterface.CompilationOptions
-import prog8.compiler.OutputType
+import prog8.compilerinterface.IAssemblyProgram
-import prog8.compiler.target.IAssemblyProgram
+import prog8.compilerinterface.OutputType
-import prog8.compiler.target.generatedLabelPrefix
+import prog8.compilerinterface.generatedLabelPrefix
 import java.nio.file.Path
 
 

compiler/src/prog8/compiler/target/cpu6502/codegen/AsmGen.kt

@@ -13,6 +13,7 @@ import prog8.compiler.target.*
 import prog8.compiler.target.cbm.AssemblyProgram
 import prog8.compiler.target.cpu6502.codegen.assignment.AsmAssignment
 import prog8.compiler.target.cpu6502.codegen.assignment.AssignmentAsmGen
+import prog8.compilerinterface.*
 import prog8.optimizer.CallGraph
 import prog8.parser.SourceCode
 import java.nio.file.Path

compiler/src/prog8/compiler/target/cpu6502/codegen/BuiltinFunctionsAsmGen.kt

@@ -11,11 +11,11 @@ import prog8.ast.statements.FunctionCallStatement
 import prog8.ast.statements.Subroutine
 import prog8.ast.toHex
 import prog8.compiler.AssemblyError
+import prog8.compilerinterface.CpuType
 import prog8.compiler.functions.FSignature
-import prog8.compiler.target.CpuType
 import prog8.compiler.target.Cx16Target
 import prog8.compiler.target.cpu6502.codegen.assignment.*
-import prog8.compiler.target.subroutineFloatEvalResultVar2
+import prog8.compilerinterface.subroutineFloatEvalResultVar2
 
 internal class BuiltinFunctionsAsmGen(private val program: Program, private val asmgen: AsmGen, private val assignAsmGen: AssignmentAsmGen) {
 
@@ -785,7 +785,6 @@ internal class BuiltinFunctionsAsmGen(private val program: Program, private val
                             && (firstOffset is NumericLiteralValue || firstOffset is IdentifierReference || firstOffset is TypecastExpression)
                             && (secondOffset is NumericLiteralValue || secondOffset is IdentifierReference || secondOffset is TypecastExpression)
                         ) {
-                            val pointerVar = firstExpr.left as IdentifierReference
                             if(firstOffset is NumericLiteralValue && secondOffset is NumericLiteralValue) {
                                 if(firstOffset!=secondOffset) {
                                     swapArrayValues(

compiler/src/prog8/compiler/target/cpu6502/codegen/ExpressionsAsmGen.kt

@@ -8,9 +8,9 @@ import prog8.ast.statements.BuiltinFunctionStatementPlaceholder
 import prog8.ast.statements.Subroutine
 import prog8.ast.toHex
 import prog8.compiler.AssemblyError
+import prog8.compilerinterface.CpuType
 import prog8.compiler.functions.BuiltinFunctions
-import prog8.compiler.target.CpuType
+import prog8.compilerinterface.subroutineFloatEvalResultVar1
-import prog8.compiler.target.subroutineFloatEvalResultVar1
 import kotlin.math.absoluteValue
 
 internal class ExpressionsAsmGen(private val program: Program, private val asmgen: AsmGen) {

compiler/src/prog8/compiler/target/cpu6502/codegen/ForLoopsAsmGen.kt

@@ -9,7 +9,7 @@ import prog8.ast.expressions.RangeExpr
 import prog8.ast.statements.ForLoop
 import prog8.ast.toHex
 import prog8.compiler.AssemblyError
-import prog8.compiler.astprocessing.toConstantIntegerRange
+import prog8.compilerinterface.toConstantIntegerRange
 import kotlin.math.absoluteValue
 
 internal class ForLoopsAsmGen(private val program: Program, private val asmgen: AsmGen) {

compiler/src/prog8/compiler/target/cpu6502/codegen/FunctionCallAsmGen.kt

@@ -10,7 +10,7 @@ import prog8.ast.statements.RegisterOrStatusflag
 import prog8.ast.statements.Subroutine
 import prog8.ast.statements.SubroutineParameter
 import prog8.compiler.AssemblyError
-import prog8.compiler.target.CpuType
+import prog8.compilerinterface.CpuType
 import prog8.compiler.target.cpu6502.codegen.assignment.AsmAssignSource
 import prog8.compiler.target.cpu6502.codegen.assignment.AsmAssignTarget
 import prog8.compiler.target.cpu6502.codegen.assignment.AsmAssignment

compiler/src/prog8/compiler/target/cpu6502/codegen/assignment/AsmAssignment.kt

@@ -1,11 +1,11 @@
 package prog8.compiler.target.cpu6502.codegen.assignment
 
-import prog8.ast.IMemSizer
 import prog8.ast.Program
 import prog8.ast.base.*
 import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.compiler.AssemblyError
+import prog8.compiler.IMemSizer
 import prog8.compiler.target.cpu6502.codegen.AsmGen
 
 

compiler/src/prog8/compiler/target/cpu6502/codegen/assignment/AssignmentAsmGen.kt

@@ -6,9 +6,9 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.*
 import prog8.ast.toHex
 import prog8.compiler.AssemblyError
+import prog8.compilerinterface.CpuType
 import prog8.compiler.functions.BuiltinFunctions
 import prog8.compiler.functions.builtinFunctionReturnType
-import prog8.compiler.target.CpuType
 import prog8.compiler.target.cpu6502.codegen.AsmGen
 import prog8.compiler.target.cpu6502.codegen.ExpressionsAsmGen
 

compiler/src/prog8/compiler/target/cpu6502/codegen/assignment/AugmentableAssignmentAsmGen.kt

@@ -6,7 +6,7 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.Subroutine
 import prog8.ast.toHex
 import prog8.compiler.AssemblyError
-import prog8.compiler.target.CpuType
+import prog8.compilerinterface.CpuType
 import prog8.compiler.target.cpu6502.codegen.AsmGen
 import prog8.compiler.target.cpu6502.codegen.ExpressionsAsmGen
 

compiler/src/prog8/compiler/target/cx16/CX16MachineDefinition.kt

@@ -1,13 +1,13 @@
 package prog8.compiler.target.cx16
 
 import prog8.compiler.*
-import prog8.compiler.target.CpuType
-import prog8.compiler.target.IMachineDefinition
 import prog8.compiler.target.c64.C64MachineDefinition
 import prog8.compiler.target.cbm.viceMonListPostfix
+import prog8.compilerinterface.*
 import java.io.IOException
 import java.nio.file.Path
 
+
 internal object CX16MachineDefinition: IMachineDefinition {
 
     override val cpu = CpuType.CPU65c02

compiler/test/AsmgenTests.kt

@@ -18,6 +18,10 @@ import prog8.compiler.*
 import prog8.compiler.target.C64Target
 import prog8.compiler.target.c64.C64MachineDefinition
 import prog8.compiler.target.cpu6502.codegen.AsmGen
+import prog8.compilerinterface.CompilationOptions
+import prog8.compilerinterface.LauncherType
+import prog8.compilerinterface.OutputType
+import prog8.compilerinterface.ZeropageType
 import prog8.parser.SourceCode
 import prog8tests.helpers.DummyFunctions
 import prog8tests.helpers.DummyMemsizer

compiler/test/ModuleImporterTests.kt

@@ -9,7 +9,7 @@ import org.hamcrest.core.Is
 import org.junit.jupiter.api.*
 import prog8.ast.Program
 import prog8.ast.internedStringsModuleName
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 import prog8.compiler.ModuleImporter
 import prog8.parser.ParseError
 import prog8.parser.SourceCode

compiler/test/TestCompilerOnExamples.kt

@@ -4,10 +4,10 @@ import org.junit.jupiter.api.DynamicTest
 import org.junit.jupiter.api.DynamicTest.dynamicTest
 import org.junit.jupiter.api.TestFactory
 import org.junit.jupiter.api.TestInstance
+import prog8.compilerinterface.ICompilationTarget
 import prog8.compiler.compileProgram
 import prog8.compiler.target.C64Target
 import prog8.compiler.target.Cx16Target
-import prog8.compiler.target.ICompilationTarget
 import prog8tests.helpers.*
 import kotlin.io.path.absolute
 import kotlin.io.path.exists

compiler/test/TestCompilerOnRanges.kt

@@ -9,10 +9,10 @@ import prog8.ast.expressions.*
 import prog8.ast.statements.ForLoop
 import prog8.ast.statements.Subroutine
 import prog8.ast.statements.VarDecl
-import prog8.compiler.astprocessing.size
+import prog8.compilerinterface.size
-import prog8.compiler.astprocessing.toConstantIntegerRange
 import prog8.compiler.target.C64Target
 import prog8.compiler.target.Cx16Target
+import prog8.compilerinterface.toConstantIntegerRange
 import prog8tests.helpers.*
 import kotlin.test.assertContains
 import kotlin.test.assertEquals

compiler/test/TestImportedModulesOrderAndOptions.kt

@@ -4,7 +4,7 @@ import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import prog8.ast.internedStringsModuleName
 import prog8.compiler.ErrorReporter
-import prog8.compiler.ZeropageType
+import prog8.compilerinterface.ZeropageType
 import prog8.compiler.determineCompilationOptions
 import prog8.compiler.parseImports
 import prog8.compiler.target.C64Target

compiler/test/TestMemory.kt

@@ -12,7 +12,7 @@ import prog8.ast.expressions.IdentifierReference
 import prog8.ast.expressions.NumericLiteralValue
 import prog8.ast.expressions.PrefixExpression
 import prog8.ast.statements.*
-import prog8.compiler.astprocessing.isInRegularRAMof
+import prog8.compilerinterface.isInRegularRAMof
 import prog8.compiler.target.C64Target
 import prog8.parser.SourceCode
 import prog8tests.helpers.DummyFunctions

compiler/test/TestNumbers.kt

@@ -6,7 +6,7 @@ import org.hamcrest.Matchers.equalTo
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.TestInstance
 import prog8.ast.toHex
-import prog8.compiler.CompilerException
+import prog8.compilerinterface.CompilerException
 import prog8.compiler.target.c64.C64MachineDefinition.FLOAT_MAX_NEGATIVE
 import prog8.compiler.target.c64.C64MachineDefinition.FLOAT_MAX_POSITIVE
 import prog8.compiler.target.c64.C64MachineDefinition.Mflpt5

compiler/test/ZeropageTests.kt

@@ -8,6 +8,7 @@ import prog8.compiler.target.C64Target
 import prog8.compiler.target.Cx16Target
 import prog8.compiler.target.c64.C64MachineDefinition.C64Zeropage
 import prog8.compiler.target.cx16.CX16MachineDefinition.CX16Zeropage
+import prog8.compilerinterface.*
 import kotlin.test.assertEquals
 import kotlin.test.assertFailsWith
 import kotlin.test.assertFalse

compiler/test/helpers/ErrorReporterForTests.kt

@@ -1,7 +1,7 @@
 package prog8tests.helpers
 
 import prog8.ast.base.Position
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
 
 class ErrorReporterForTests(private val throwExceptionAtReportIfErrors: Boolean=true): IErrorReporter {
 

compiler/test/helpers/compileXyz.kt

@@ -1,10 +1,8 @@
 package prog8tests.helpers
 
-import prog8.compiler.CompilationResult
+import prog8.compiler.*
-import prog8.compiler.ErrorReporter
+import prog8.compilerinterface.ICompilationTarget
-import prog8.compiler.IErrorReporter
+import prog8.compilerinterface.IErrorReporter
-import prog8.compiler.compileProgram
-import prog8.compiler.target.ICompilationTarget
 import java.nio.file.Path
 import kotlin.io.path.name
 import kotlin.test.assertFalse

compilerAst/src/prog8/ast/AstToplevel.kt

@@ -7,6 +7,7 @@ import prog8.ast.expressions.StringLiteralValue
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstVisitor
+import prog8.compiler.IMemSizer
 import prog8.parser.SourceCode
 
 const val internedStringsModuleName = "prog8_interned_strings"
@@ -286,7 +287,8 @@ interface Node {
 
 class Program(val name: String,
               val builtinFunctions: IBuiltinFunctions,
-              val memsizer: IMemSizer): Node {
+              val memsizer: IMemSizer
+): Node {
     private val _modules = mutableListOf<Module>()
 
     val modules: List<Module> = _modules

compilerAst/src/prog8/ast/IBuiltinFunctions.kt

@@ -4,6 +4,7 @@ import prog8.ast.base.Position
 import prog8.ast.expressions.Expression
 import prog8.ast.expressions.InferredTypes
 import prog8.ast.expressions.NumericLiteralValue
+import prog8.compiler.IMemSizer
 
 interface IBuiltinFunctions {
     val names: Set<String>

compilerAst/src/prog8/ast/expressions/AstExpressions.kt

@@ -6,6 +6,7 @@ import prog8.ast.base.*
 import prog8.ast.statements.*
 import prog8.ast.walk.AstWalker
 import prog8.ast.walk.IAstVisitor
+import prog8.compiler.IMemSizer
 import java.util.*
 
 

compilerAst/src/prog8/compiler/IMemSizer.kt

@@ -1,4 +1,4 @@
-package prog8.ast
+package prog8.compiler
 
 import prog8.ast.base.DataType
 

compilerAst/test/helpers/DummyFunctions.kt

@@ -1,11 +1,11 @@
 package prog8tests.helpers
 
 import prog8.ast.IBuiltinFunctions
-import prog8.ast.IMemSizer
 import prog8.ast.base.Position
 import prog8.ast.expressions.Expression
 import prog8.ast.expressions.InferredTypes
 import prog8.ast.expressions.NumericLiteralValue
+import prog8.compiler.IMemSizer
 
 val DummyFunctions = object : IBuiltinFunctions {
     override val names: Set<String> = emptySet()

compilerAst/test/helpers/DummyMemsizer.kt

@@ -1,7 +1,7 @@
 package prog8tests.helpers
 
-import prog8.ast.IMemSizer
 import prog8.ast.base.DataType
+import prog8.compiler.IMemSizer
 
 val DummyMemsizer = object : IMemSizer {
     override fun memorySize(dt: DataType): Int = 0

compilerInterfaces/build.gradle

@@ -0,0 +1,66 @@
+
+plugins {
+    id 'java'
+    id 'application'
+    id "org.jetbrains.kotlin.jvm"
+}
+
+targetCompatibility = 11
+sourceCompatibility = 11
+
+repositories {
+    mavenLocal()
+    mavenCentral()
+    maven { url "https://kotlin.bintray.com/kotlinx" }
+}
+
+dependencies {
+    implementation project(':compilerAst')
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+    // implementation "org.jetbrains.kotlin:kotlin-reflect"
+
+}
+
+compileKotlin {
+    kotlinOptions {
+        jvmTarget = "11"
+        // verbose = true
+        // freeCompilerArgs += "-XXLanguage:+NewInference"
+    }
+}
+
+compileTestKotlin {
+    kotlinOptions {
+        jvmTarget = "11"
+    }
+}
+
+sourceSets {
+    main {
+        java {
+            srcDirs = ["${project.projectDir}/src"]
+        }
+        resources {
+            srcDirs = ["${project.projectDir}/res"]
+        }
+    }
+    test {
+        java {
+            srcDirs = ["${project.projectDir}/test"]
+        }
+    }
+}
+
+
+test {
+    // Enable JUnit 5 (Gradle 4.6+).
+    useJUnitPlatform()
+
+    // Always run tests, even when nothing changed.
+    dependsOn 'cleanTest'
+
+    // Show test results.
+    testLogging {
+        events "skipped", "failed"
+    }
+}

compilerInterfaces/compilerInterfaces.iml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="jdk" jdkName="openjdk-11" jdkType="JavaSDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime (3)" level="project" />
+    <orderEntry type="module" module-name="compilerAst" />
+  </component>
+</module>

compilerInterfaces/src/prog8/compilerinterface/AstExtensions.kt

@@ -0,0 +1,99 @@
+package prog8.compilerinterface
+
+import prog8.ast.base.VarDeclType
+import prog8.ast.expressions.IdentifierReference
+import prog8.ast.expressions.NumericLiteralValue
+import prog8.ast.expressions.RangeExpr
+import prog8.ast.expressions.StringLiteralValue
+import prog8.ast.statements.AssignTarget
+import kotlin.math.abs
+
+fun AssignTarget.isInRegularRAMof(machine: IMachineDefinition): Boolean {
+    val memAddr = memoryAddress
+    val arrayIdx = arrayindexed
+    val ident = identifier
+    when {
+        memAddr != null -> {
+            return when (memAddr.addressExpression) {
+                is NumericLiteralValue -> {
+                    machine.isRegularRAMaddress((memAddr.addressExpression as NumericLiteralValue).number.toInt())
+                }
+                is IdentifierReference -> {
+                    val program = definingModule.program
+                    val decl = (memAddr.addressExpression as IdentifierReference).targetVarDecl(program)
+                    if ((decl?.type == VarDeclType.VAR || decl?.type == VarDeclType.CONST) && decl.value is NumericLiteralValue)
+                        machine.isRegularRAMaddress((decl.value as NumericLiteralValue).number.toInt())
+                    else
+                        false
+                }
+                else -> false
+            }
+        }
+        arrayIdx != null -> {
+            val program = definingModule.program
+            val targetStmt = arrayIdx.arrayvar.targetVarDecl(program)
+            return if (targetStmt?.type == VarDeclType.MEMORY) {
+                val addr = targetStmt.value as? NumericLiteralValue
+                if (addr != null)
+                    machine.isRegularRAMaddress(addr.number.toInt())
+                else
+                    false
+            } else true
+        }
+        ident != null -> {
+            val program = definingModule.program
+            val decl = ident.targetVarDecl(program)!!
+            return if (decl.type == VarDeclType.MEMORY && decl.value is NumericLiteralValue)
+                machine.isRegularRAMaddress((decl.value as NumericLiteralValue).number.toInt())
+            else
+                true
+        }
+        else -> return true
+    }
+}
+
+fun RangeExpr.toConstantIntegerRange(encoding: IStringEncoding): IntProgression? {
+
+    fun makeRange(fromVal: Int, toVal: Int, stepVal: Int): IntProgression {
+        return when {
+            fromVal <= toVal -> when {
+                stepVal <= 0 -> IntRange.EMPTY
+                stepVal == 1 -> fromVal..toVal
+                else -> fromVal..toVal step stepVal
+            }
+            else -> when {
+                stepVal >= 0 -> IntRange.EMPTY
+                stepVal == -1 -> fromVal downTo toVal
+                else -> fromVal downTo toVal step abs(stepVal)
+            }
+        }
+    }
+
+    val fromVal: Int
+    val toVal: Int
+    val fromString = from as? StringLiteralValue
+    val toString = to as? StringLiteralValue
+    if(fromString!=null && toString!=null ) {
+        // string range -> int range over character values
+        fromVal = encoding.encodeString(fromString.value, fromString.altEncoding)[0].toInt()
+        toVal = encoding.encodeString(toString.value, fromString.altEncoding)[0].toInt()
+    } else {
+        val fromLv = from as? NumericLiteralValue
+        val toLv = to as? NumericLiteralValue
+        if(fromLv==null || toLv==null)
+            return null         // non-constant range
+        // integer range
+        fromVal = fromLv.number.toInt()
+        toVal = toLv.number.toInt()
+    }
+    val stepVal = (step as? NumericLiteralValue)?.number?.toInt() ?: 1
+    return makeRange(fromVal, toVal, stepVal)
+}
+
+fun RangeExpr.size(encoding: IStringEncoding): Int? {
+    val fromLv = (from as? NumericLiteralValue)
+    val toLv = (to as? NumericLiteralValue)
+    if(fromLv==null || toLv==null)
+        return null
+    return toConstantIntegerRange(encoding)?.count()
+}

compilerInterfaces/src/prog8/compilerinterface/CompilationOptions.kt

@@ -0,0 +1,31 @@
+package prog8.compilerinterface
+
+enum class OutputType {
+    RAW,
+    PRG
+}
+
+enum class LauncherType {
+    BASIC,
+    NONE
+}
+
+enum class ZeropageType {
+    BASICSAFE,
+    FLOATSAFE,
+    KERNALSAFE,
+    FULL,
+    DONTUSE
+}
+
+data class CompilationOptions(val output: OutputType,
+                              val launcher: LauncherType,
+                              val zeropage: ZeropageType,
+                              val zpReserved: List<IntRange>,
+                              val floats: Boolean,
+                              val noSysInit: Boolean,
+                              val compTarget: ICompilationTarget
+) {
+    var slowCodegenWarnings = false
+    var optimize = false
+}

compilerInterfaces/src/prog8/compilerinterface/CompilerException.kt

@@ -0,0 +1,3 @@
+package prog8.compilerinterface
+
+class CompilerException(message: String?) : Exception(message)

compilerInterfaces/src/prog8/compilerinterface/IAssemblyGenerator.kt

@@ -0,0 +1,15 @@
+package prog8.compilerinterface
+
+interface IAssemblyGenerator {
+    fun compileToAssembly(): IAssemblyProgram
+}
+
+const val generatedLabelPrefix = "_prog8_label_"
+const val subroutineFloatEvalResultVar1 = "_prog8_float_eval_result1"
+const val subroutineFloatEvalResultVar2 = "_prog8_float_eval_result2"
+
+interface IAssemblyProgram {
+    val valid: Boolean
+    val name: String
+    fun assemble(options: CompilationOptions): Int
+}

compilerInterfaces/src/prog8/compilerinterface/ICompilationTarget.kt

@@ -0,0 +1,10 @@
+package prog8.compilerinterface
+
+import prog8.compiler.IMemSizer
+
+interface ICompilationTarget: IStringEncoding, IMemSizer {
+    val name: String
+    val machine: IMachineDefinition
+    override fun encodeString(str: String, altEncoding: Boolean): List<Short>
+    override fun decodeString(bytes: List<Short>, altEncoding: Boolean): String
+}

compilerInterfaces/src/prog8/compilerinterface/IErrorReporter.kt

@@ -0,0 +1,16 @@
+package prog8.compilerinterface
+
+import prog8.ast.base.Position
+import prog8.parser.ParsingFailedError
+
+
+interface IErrorReporter {
+    fun err(msg: String, position: Position)
+    fun warn(msg: String, position: Position)
+    fun noErrors(): Boolean
+    fun report()
+    fun finalizeNumErrors(numErrors: Int, numWarnings: Int) {
+        if(numErrors>0)
+            throw ParsingFailedError("There are $numErrors errors and $numWarnings warnings.")
+    }
+}

compilerInterfaces/src/prog8/compilerinterface/IMachineDefinition.kt

@@ -1,7 +1,5 @@
-package prog8.compiler.target
+package prog8.compilerinterface
 
-import prog8.compiler.CompilationOptions
-import prog8.compiler.Zeropage
 import java.nio.file.Path
 
 

compilerInterfaces/src/prog8/compilerinterface/IStringEncoding.kt

@@ -1,4 +1,4 @@
-package prog8.compiler
+package prog8.compilerinterface
 
 interface IStringEncoding {
     fun encodeString(str: String, altEncoding: Boolean): List<Short>

compilerInterfaces/src/prog8/compilerinterface/Zeropage.kt

@@ -1,4 +1,4 @@
-package prog8.compiler
+package prog8.compilerinterface
 
 import prog8.ast.base.*
 

docs/source/todo.rst

@@ -27,7 +27,6 @@ Future
 - add a diskio.f_seek() routine for the Cx16 that uses its seek dos api?
 - make it possible for diskio to read and write from more than one file at the same time (= use multiple io channels)?
 - refactor the asmgen into own project submodule
-- refactor the compiler optimizers into own project submodule
 - make it possible to use cpu opcodes such as 'nop' as variable names by prefixing all asm vars with something such as ``v_``
 - [problematic due to 64tass:] add a compiler option to not remove unused subroutines. this allows for building library programs. But this won't work with 64tass's .proc ...
   Perhaps replace all uses of .proc/.pend by .block/.bend will fix that?

httpCompilerService/build.gradle

@@ -16,6 +16,7 @@ repositories {
 }
 
 dependencies {
+    implementation project(':compilerInterfaces')
     implementation project(':compiler')
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
     // implementation "org.jetbrains.kotlin:kotlin-reflect"

httpCompilerService/httpCompilerService.iml

@@ -14,5 +14,6 @@
     <orderEntry type="library" name="glassfish.javax.json" level="project" />
     <orderEntry type="library" name="takes" level="project" />
     <orderEntry type="library" name="slf4j.simple" level="project" />
+    <orderEntry type="module" module-name="compilerInterfaces" />
   </component>
 </module>

settings.gradle

@@ -1,5 +1,7 @@
 include ':parser'
+include ':compilerInterfaces'
 include ':compilerAst'
+include ':codeOptimizers'
 include ':compiler'
 include ':dbusCompilerService'
 include ':httpCompilerService'