[FIR] Insert fake source for FIR for array access temporaries

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/compoundAssignWithArrayAccessConvention_propertyAccess.kt

@@ -0,0 +1,8 @@
+interface MyMap<K, V> {
+    operator fun get(k: K): V
+    operator fun set(k: K, v: V)
+}
+
+fun test(m: MyMap<String, Int>) {
+    <expr>m</expr>["a"] += 1
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/compoundAssignWithArrayAccessConvention_propertyAccess.txt

@@ -0,0 +1,6 @@
+KT element: KtNameReferenceExpression
+FIR element: FirPropertyAccessExpressionImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+R|<local>/m|

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+interface A {
+    operator fun inc(): A
+}
+
+interface MyMap<K, V> {
+    operator fun get(k: K): V
+    operator fun set(k: K, v: V): Unit
+}
+
+fun test(m: MyMap<String, A>) {
+    <expr>m["a"]++</expr>
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention.txt

@@ -0,0 +1,6 @@
+KT element: KtPostfixExpression
+FIR element: FirFunctionCallImpl
+FIR source kind: DesugaredIncrementOrDecrement
+
+FIR element rendered:
+R|<local>/<array>|.R|SubstitutionOverride</MyMap.set: R|kotlin/Unit|>|(R|<local>/<index_0>|, R|<local>/<unary>|.R|/A.inc|())

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention_propertyAccess.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+interface A {
+    operator fun inc(): A
+}
+
+interface MyMap<K, V> {
+    operator fun get(k: K): V
+    operator fun set(k: K, v: V): Unit
+}
+
+fun test(m: MyMap<String, A>) {
+    <expr>m</expr>["a"]++
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention_propertyAccess.txt

@@ -0,0 +1,6 @@
+KT element: KtNameReferenceExpression
+FIR element: FirPropertyAccessExpressionImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+R|<local>/m|

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention_set.kt

@@ -0,0 +1,12 @@
+interface A {
+    operator fun inc(): A
+}
+
+interface MyMap<K, V> {
+    operator fun get(k: K): V
+    operator fun set(k: K, v: V): Unit
+}
+
+fun test(m: MyMap<String, A>) {
+    <expr>m["a"]</expr>++
+}

analysis/low-level-api-fir/testdata/getOrBuildFir/calls/incWithArrayAccessConvention_set.txt

@@ -0,0 +1,6 @@
+KT element: KtArrayAccessExpression
+FIR element: FirResolvedNamedReferenceImpl
+FIR source kind: KtRealSourceElementKind
+
+FIR element rendered:
+R|SubstitutionOverride</MyMap.set: R|kotlin/Unit|>|