ParameterBuilder refactoring: allow to generate captured parameter between value ones

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/AnonymousObjectTransformer.java

@@ -251,7 +251,7 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
         List<Type> descTypes = new ArrayList<Type>();
 
         Parameters constructorParams = constructorInlineBuilder.buildParameters();
-        int[] capturedIndexes = new int[constructorParams.getReal().size() + constructorParams.getCaptured().size()];
+        int[] capturedIndexes = new int[constructorParams.getParameters().size()];
         int index = 0;
         int size = 0;
 
@@ -432,7 +432,7 @@ public class AnonymousObjectTransformer extends ObjectTransformer<AnonymousObjec
 
         Type[] types = Type.getArgumentTypes(constructorDesc);
         for (Type type : types) {
-            LambdaInfo info = indexToLambda.get(constructorParamBuilder.getNextValueParameterIndex());
+            LambdaInfo info = indexToLambda.get(constructorParamBuilder.getNextParameterOffset());
             ParameterInfo parameterInfo = constructorParamBuilder.addNextParameter(type, info != null);
             parameterInfo.setLambda(info);
             if (capturedParams.contains(parameterInfo.getIndex())) {

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/CapturedParamInfo.java

@@ -26,7 +26,7 @@ public class CapturedParamInfo extends ParameterInfo {
     private final boolean skipInConstructor;
 
     public CapturedParamInfo(@NotNull CapturedParamDesc desc, @NotNull String newFieldName, boolean skipped, int index, int remapIndex) {
-        super(desc.getType(), skipped, index, remapIndex, index);
+        super(desc.getType(), skipped, index, remapIndex, -1);
         this.desc = desc;
         this.newFieldName = newFieldName;
         this.skipInConstructor = false;
@@ -38,9 +38,10 @@ public class CapturedParamInfo extends ParameterInfo {
             boolean skipped,
             int index,
             @Nullable StackValue remapIndex,
-            boolean skipInConstructor
+            boolean skipInConstructor,
+            int declarationIndex
     ) {
-        super(desc.getType(), skipped, index, remapIndex, index);
+        super(desc.getType(), skipped, index, remapIndex, declarationIndex);
         this.desc = desc;
         this.newFieldName = newFieldName;
         this.skipInConstructor = skipInConstructor;
@@ -57,13 +58,10 @@ public class CapturedParamInfo extends ParameterInfo {
     }
 
     @NotNull
-    public CapturedParamInfo newIndex(int newIndex) {
+    public CapturedParamInfo cloneWithNewDeclarationIndex(int newDeclarationIndex) {
-        return clone(newIndex, getRemapValue());
+        CapturedParamInfo result = new CapturedParamInfo(
-    }
+                desc, newFieldName, isSkipped, getIndex(), getRemapValue(), skipInConstructor, newDeclarationIndex
-
+        );
-    @NotNull
-    private CapturedParamInfo clone(int newIndex, @Nullable StackValue newRemapIndex) {
-        CapturedParamInfo result = new CapturedParamInfo(desc, newFieldName, isSkipped, newIndex, newRemapIndex, skipInConstructor);
         result.setLambda(getLambda());
         return result;
     }

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegen.java

@@ -726,7 +726,7 @@ public class InlineCodegen extends CallGenerator {
         }
 
         invocationParamBuilder.markValueParametersStart();
-        List<ParameterInfo> hiddenParameters = invocationParamBuilder.buildParameters().getReal();
+        List<ParameterInfo> hiddenParameters = invocationParamBuilder.buildParameters().getParameters();
         recordParameterValueInLocalVal(hiddenParameters.toArray(new ParameterInfo[hiddenParameters.size()]));
     }
 

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/InlineCodegenUtil.java

@@ -488,7 +488,7 @@ public class InlineCodegenUtil {
 
     public static int calcMarkerShift(@NotNull Parameters parameters, @NotNull MethodNode node) {
         int markerShiftTemp = getIndexAfterLastMarker(node);
-        return markerShiftTemp - parameters.getRealArgsSizeOnStack() + parameters.getArgsSizeOnStack();
+        return markerShiftTemp - parameters.getRealParametersSizeOnStack() + parameters.getArgsSizeOnStack();
     }
 
     private static int getIndexAfterLastMarker(@NotNull MethodNode node) {

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/MethodInliner.java

@@ -340,8 +340,8 @@ public class MethodInliner {
 
     @NotNull
     private MethodNode prepareNode(@NotNull MethodNode node, int finallyDeepShift) {
-        final int capturedParamsSize = parameters.getCapturedArgsSizeOnStack();
+        final int capturedParamsSize = parameters.getCapturedParametersSizeOnStack();
-        final int realParametersSize = parameters.getRealArgsSizeOnStack();
+        final int realParametersSize = parameters.getRealParametersSizeOnStack();
         Type[] types = Type.getArgumentTypes(node.desc);
         Type returnType = Type.getReturnType(node.desc);
 

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/Parameters.kt

@@ -19,15 +19,23 @@ package org.jetbrains.kotlin.codegen.inline
 import org.jetbrains.org.objectweb.asm.Type
 import java.util.*
 
-internal class Parameters(val real: List<ParameterInfo>, val captured: List<CapturedParamInfo>) : Iterable<ParameterInfo> {
+internal class Parameters(val parameters: List<ParameterInfo>) : Iterable<ParameterInfo> {
 
     private val actualDeclShifts: Array<ParameterInfo?>
     private val paramToDeclByteCodeIndex: HashMap<ParameterInfo, Int> = hashMapOf()
 
-    val realArgsSizeOnStack = real.sumBy { it.type.size }
+    val argsSizeOnStack = parameters.sumBy { it.type.size }
-    val capturedArgsSizeOnStack = captured.sumBy { it.type.size }
 
-    val argsSizeOnStack = realArgsSizeOnStack + capturedArgsSizeOnStack
+    val realParametersSizeOnStack: Int
+        get() = argsSizeOnStack - capturedParametersSizeOnStack
+
+    val capturedParametersSizeOnStack by lazy {
+        captured.sumBy { it.type.size }
+    }
+
+    val captured by lazy {
+        parameters.filterIsInstance<CapturedParamInfo>()
+    }
 
     init {
         val declIndexesToActual = arrayOfNulls<Int>(argsSizeOnStack)
@@ -54,21 +62,15 @@ internal class Parameters(val real: List<ParameterInfo>, val captured: List<Capt
     }
 
     private fun get(index: Int): ParameterInfo {
-        return real.getOrNull(index) ?: captured[index - real.size]
+        return parameters[index]
     }
 
     override fun iterator(): Iterator<ParameterInfo> {
-        return (real + captured).iterator()
+        return parameters.iterator()
     }
 
     val capturedTypes: List<Type>
         get() = captured.map {
             it.getType()
         }
-
-    companion object {
-        fun shift(capturedParams: List<CapturedParamInfo>, realSize: Int): List<CapturedParamInfo> {
-            return capturedParams.withIndex().map { it.value.newIndex(it.index + realSize) }
-        }
-    }
 }

compiler/backend/src/org/jetbrains/kotlin/codegen/inline/ParametersBuilder.kt

@@ -18,49 +18,45 @@ package org.jetbrains.kotlin.codegen.inline
 
 import org.jetbrains.kotlin.codegen.StackValue
 import org.jetbrains.org.objectweb.asm.Type
-import java.util.*
 
 internal class ParametersBuilder private constructor() {
-    private val valueAndHiddenParams = arrayListOf<ParameterInfo>()
-    private val capturedParams = arrayListOf<CapturedParamInfo>()
-    private var valueParamStart = 0
 
-    var nextValueParameterIndex = 0
+    private val params = arrayListOf<ParameterInfo>()
+
+    private var valueParamFirstIndex = 0
+
+    var nextParameterOffset = 0
         private set
 
-    private var nextCaptured = 0
+    private var nextValueParameterIndex = 0
 
     fun addThis(type: Type, skipped: Boolean): ParameterInfo {
-        val info = ParameterInfo(type, skipped, nextValueParameterIndex, -1, valueAndHiddenParams.size)
+        return addParameter(ParameterInfo(type, skipped, nextParameterOffset, -1, nextValueParameterIndex))
-        addParameter(info)
-        return info
     }
 
     fun addNextParameter(type: Type, skipped: Boolean): ParameterInfo {
-        return addParameter(ParameterInfo(type, skipped, nextValueParameterIndex, null, valueAndHiddenParams.size))
+        return addParameter(ParameterInfo(type, skipped, nextParameterOffset, null, nextValueParameterIndex))
     }
 
     fun addNextValueParameter(type: Type, skipped: Boolean, remapValue: StackValue?, parameterIndex: Int): ParameterInfo {
         return addParameter(ParameterInfo(
-                type, skipped, nextValueParameterIndex, remapValue,
+                type, skipped, nextParameterOffset, remapValue,
-                if (parameterIndex == -1) valueAndHiddenParams.size else parameterIndex + valueParamStart
+                if (parameterIndex == -1) nextValueParameterIndex else parameterIndex + valueParamFirstIndex
         ))
     }
 
     fun addCapturedParam(original: CapturedParamInfo, newFieldName: String): CapturedParamInfo {
-        val info = CapturedParamInfo(original.desc, newFieldName, original.isSkipped, nextCapturedIndex(), original.index)
+        val info = CapturedParamInfo(original.desc, newFieldName, original.isSkipped, nextParameterOffset, original.index)
         info.lambda = original.lambda
-        return addCapturedParameter(info)
+        return addParameter(info)
     }
 
-    private fun nextCapturedIndex(): Int = nextCaptured
-
     fun addCapturedParam(desc: CapturedParamDesc, newFieldName: String, skipInConstructor: Boolean): CapturedParamInfo {
-        return addCapturedParameter(CapturedParamInfo(desc, newFieldName, false, nextCapturedIndex(), null, skipInConstructor))
+        return addParameter(CapturedParamInfo(desc, newFieldName, false, nextParameterOffset, null, skipInConstructor, -1))
     }
 
     fun addCapturedParamCopy(copyFrom: CapturedParamInfo): CapturedParamInfo {
-        return addCapturedParameter(copyFrom.newIndex(nextCapturedIndex()))
+        return addParameter(copyFrom.cloneWithNewDeclarationIndex(-1))
     }
 
     fun addCapturedParam(
@@ -72,41 +68,48 @@ internal class ParametersBuilder private constructor() {
             original: ParameterInfo?
     ): CapturedParamInfo {
         val info = CapturedParamInfo(
-                CapturedParamDesc(containingLambdaType, fieldName, type), newFieldName, skipped, nextCapturedIndex(), original?.index ?: -1
+                CapturedParamDesc(containingLambdaType, fieldName, type), newFieldName, skipped, nextParameterOffset, original?.index ?: -1
         )
         if (original != null) {
             info.lambda = original.lambda
         }
-        return addCapturedParameter(info)
+        return addParameter(info)
     }
 
-    private fun addParameter(info: ParameterInfo): ParameterInfo {
+    private fun <T: ParameterInfo> addParameter(info: T): T {
-        valueAndHiddenParams.add(info)
+        params.add(info)
-        nextValueParameterIndex += info.getType().size
+        nextParameterOffset += info.getType().size
-        return info
+        if (info !is CapturedParamInfo) {
-    }
+            nextValueParameterIndex++
-
+        }
-    private fun addCapturedParameter(info: CapturedParamInfo): CapturedParamInfo {
-        capturedParams.add(info)
-        nextCaptured += info.getType().size
         return info
     }
 
     fun markValueParametersStart() {
-        this.valueParamStart = valueAndHiddenParams.size
+        this.valueParamFirstIndex = params.size
+        this.nextValueParameterIndex = valueParamFirstIndex
     }
 
     fun listCaptured(): List<CapturedParamInfo> {
-        return Collections.unmodifiableList(capturedParams)
+        return params.filterIsInstance<CapturedParamInfo>()
     }
 
     /*TODO use Parameters instead*/
     fun listAllParams(): List<ParameterInfo> {
-        return valueAndHiddenParams + capturedParams
+        return params
     }
 
     fun buildParameters(): Parameters {
-        return Parameters(Collections.unmodifiableList(valueAndHiddenParams), Parameters.shift(listCaptured(), nextValueParameterIndex))
+        var nextDeclarationIndex = (params.maxBy { it.declarationIndex }?.declarationIndex ?: -1) + 1
+
+        return Parameters(params.map { param ->
+            if (param is CapturedParamInfo) {
+                param.cloneWithNewDeclarationIndex(nextDeclarationIndex++)
+            }
+            else {
+                param
+            }
+        })
     }
 
     companion object {