Initial implementation of faster component function usage search

idea/testData/findUsages/kotlin/conventions/componentFunctions.1.kt

@@ -1,4 +0,0 @@
-fun test() {
-    for ((x, y, z) in arrayOf<A>()) {
-    }
-}

idea/testData/findUsages/kotlin/conventions/componentFunctions.results.txt

@@ -1,4 +0,0 @@
-[componentFunctions.0.kt] Function call 9 a.component1()
-[componentFunctions.0.kt] Value read 10 val (x, y, z) = a
-[componentFunctions.0.kt] Value read 8 a.n
-[componentFunctions.1.kt] Value read 2 for ((x, y, z) in arrayOf<A>()) {

idea/testData/findUsages/kotlin/conventions/components/componentFunForGenericType1.0.kt

@@ -0,0 +1,13 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtFunction
+// OPTIONS: usages
+
+class X<T>
+
+operator fun <T> X<T>.<caret>component1(): Int = 0
+operator fun <T> X<T>.component2(): Int = 0
+
+fun f() = X<String>()
+
+fun test() {
+    val (x, y) = f()
+}

idea/testData/findUsages/kotlin/conventions/components/componentFunForGenericType1.results.txt

@@ -0,0 +1 @@
+Value read 12 val (x, y) = f()

idea/testData/findUsages/kotlin/conventions/components/componentFunForGenericType2.0.kt

@@ -0,0 +1,18 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtFunction
+// OPTIONS: usages
+
+class X<T>
+
+operator fun X<Int>.<caret>component1(): Int = 0
+operator fun X<Int>.component2(): Int = 0
+
+operator fun X<String>.component1(): Int = 0
+operator fun X<String>.component2(): Int = 0
+
+fun f() = X<Int>()
+fun g() = X<String>()
+
+fun test() {
+    val (x1, y1) = f()
+    val (x2, y2) = g()
+}

idea/testData/findUsages/kotlin/conventions/components/componentFunForGenericType2.results.txt

@@ -0,0 +1 @@
+Value read 16 val (x1, y1) = f()

idea/testData/findUsages/kotlin/conventions/components/dataClass.0.java

@@ -0,0 +1,11 @@
+import java.util.List;
+import pack.A;
+
+class JavaClass {
+    public List<A> getA() {
+        A a = new A(1, "", "");
+        return Collections.singletonList(a);
+    }
+
+    public void takeA(A a){}
+}

idea/testData/findUsages/kotlin/conventions/components/dataClass.0.kt

@@ -1,11 +1,5 @@
 // PSI_ELEMENT: org.jetbrains.kotlin.psi.KtParameter
 // OPTIONS: usages
+package pack
 
 data class A(val <caret>n: Int, val s: String, val o: Any)
-
-fun test() {
-    val a = A(1, "2", Any())
-    a.n
-    a.component1()
-    val (x, y, z) = a
-}

idea/testData/findUsages/kotlin/conventions/components/dataClass.1.kt

@@ -0,0 +1,10 @@
+import pack.A
+
+fun test() {
+    for ((x, y, z) in arrayOf<A>()) {
+    }
+
+    for (a in listOf<A>()) {
+        val (x, y) = a
+    }
+}

idea/testData/findUsages/kotlin/conventions/components/dataClass.2.kt

@@ -0,0 +1,22 @@
+import pack.A
+
+fun test(javaClass: JavaClass) {
+    val a = A(1, "2", Any())
+    a.n
+    a.component1()
+
+    val (x, y, z) = a
+    val (x1, y1, z1) = f()
+    val (x2, y2, z2) = g()
+    val (x3, y3, z3) = h()
+
+    val (x4, y4, z4) = listOfA()[0]
+
+    val (x5, y5, z5) = javaClass.getA()[0]
+}
+
+fun f(): A = TODO()
+fun g() = A()
+fun h() = g()
+
+fun listOfA() = listOf<A>(A(1, "", ""))

idea/testData/findUsages/kotlin/conventions/components/dataClass.results.txt

@@ -0,0 +1,10 @@
+[dataClass.1.kt] Value read 4 for ((x, y, z) in arrayOf<A>()) {
+[dataClass.1.kt] Value read 8 val (x, y) = a
+[dataClass.2.kt] Function call 6 a.component1()
+[dataClass.2.kt] Value read 10 val (x2, y2, z2) = g()
+[dataClass.2.kt] Value read 11 val (x3, y3, z3) = h()
+[dataClass.2.kt] Value read 13 val (x4, y4, z4) = listOfA()[0]
+[dataClass.2.kt] Value read 15 val (x5, y5, z5) = javaClass.getA()[0]
+[dataClass.2.kt] Value read 5 a.n
+[dataClass.2.kt] Value read 8 val (x, y, z) = a
+[dataClass.2.kt] Value read 9 val (x1, y1, z1) = f()

idea/testData/findUsages/kotlin/conventions/components/extensionComponentFun.0.kt

@@ -0,0 +1,14 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtFunction
+// OPTIONS: usages
+
+class X
+
+operator fun X.component1(): Int = 0
+operator fun X.<caret>component2(): Int = 1
+
+
+fun f() = X()
+
+fun test() {
+    val (x, y) = f()
+}

idea/testData/findUsages/kotlin/conventions/components/extensionComponentFun.results.txt

@@ -0,0 +1 @@
+Value read 13 val (x, y) = f()

idea/testData/findUsages/kotlin/conventions/components/memberComponentFun.0.kt

@@ -0,0 +1,20 @@
+// PSI_ELEMENT: org.jetbrains.kotlin.psi.KtFunction
+// OPTIONS: usages
+
+open class X {
+    operator fun <caret>component1(): Int = 0
+    operator fun component2(): Int = 1
+}
+
+open class Y : X()
+open class Z : Y()
+
+fun f() = X()
+fun g() = Y()
+fun h() = Z()
+
+fun test() {
+    val (x, y) = f()
+    val (x1, y1) = g()
+    val (x2, y2) = h()
+}

idea/testData/findUsages/kotlin/conventions/components/memberComponentFun.results.txt

@@ -0,0 +1,3 @@
+Value read 17 val (x, y) = f()
+Value read 18 val (x1, y1) = g()
+Value read 19 val (x2, y2) = h()

idea/testData/inspections/unusedSymbol/function/conventionalNames.kt

@@ -1,34 +0,0 @@
-// all these are unused, but have conventional names, so they won't be marked as unused
-
-fun inc() {
-}
-
-fun dec() {
-}
-
-fun component1() {
-}
-
-fun component100() {
-}
-
-fun equals() {
-}
-
-fun invoke() {
-}
-
-fun iterator() {
-}
-
-fun compareTo() {
-}
-
-fun get() {
-}
-
-fun set() {
-}
-
-fun plusAssign() {
-}

idea/testData/inspections/unusedSymbol/function/operators.kt

@@ -0,0 +1,9 @@
+// all these are unused but are operators
+
+operator fun String.inc() = ""
+
+operator fun String.dec() = ""
+
+operator fun String.component1() = 0
+
+operator fun String.component100() = 0

idea/testData/search/references/testComponentFun.kt

@@ -0,0 +1,10 @@
+class A
+
+operator fun A.<caret>component1(): Int = 0
+operator fun A.component2(): Int = 1
+
+fun test() {
+    val a = A()
+    a.component1()
+    val (x, y) = a
+}