Implemented fast search for binary operators

idea/testData/findUsages/kotlin/conventions/compareTo.0.kt

@@ -2,8 +2,8 @@
 // OPTIONS: usages
 
 class A(val n: Int) {
-    fun <caret>compareTo(other: A): Int = compareTo(other.n)
-    fun compareTo(m: Int): Int = n.compareTo(m)
+    infix operator fun <caret>compareTo(other: A): Int = compareTo(other.n)
+    infix operator fun compareTo(m: Int): Int = n.compareTo(m)
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/components/operators.log

@@ -1,4 +1,13 @@
+Resolved (x, y)
+Resolved b1 + b2
 Searched references to A
+Searched references to B
+Searched references to parameter b1 in f() in Kotlin files
+Searched references to parameter b2 in f() in Kotlin files
+Searched references to parameter other in plus() in Kotlin files
+Searched references to plus() in Kotlin files
 Used plain search in LocalSearchScope:
     CLASS:A
-Used plain search in whole search scope
+Used plain search in LocalSearchScope:
+    CLASS:B
+    FUN:plus

idea/testData/findUsages/kotlin/conventions/contains.0.kt

@@ -2,7 +2,7 @@
 // OPTIONS: usages
 
 class A(val n: Int) {
-    fun <caret>contains(k: Int): Boolean = k <= n
+    infix operator fun <caret>contains(k: Int): Boolean = k <= n
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/equals.0.kt

@@ -3,7 +3,7 @@
 // FIND_BY_REF
 
 class A(val n: Int) {
-    override fun equals(other: Any?): Boolean = other is A && other.n <caret>== n
+    infix override fun equals(other: Any?): Boolean = other is A && other.n <caret>== n
 }
 
 fun test() {

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

@@ -1,4 +1,4 @@
 Function call 10 A(0) == A(1)
 Function call 11 A(0) != A(1)
 Function call 12 A(0) equals A(1)
-Function call 6 override fun equals(other: Any?): Boolean = other is A && other.n == n
+Function call 6 infix override fun equals(other: Any?): Boolean = other is A && other.n == n

idea/testData/findUsages/kotlin/conventions/forIteration.0.kt

@@ -2,11 +2,11 @@
 // OPTIONS: usages
 
 class A<T: Any> {
-    public fun <caret>iterator(): Iterator<T> = throw IllegalStateException("")
+    operator fun <caret>iterator(): Iterator<T> = throw IllegalStateException("")
 }
 
 class B<T: Any> {
-    public fun iterator(): Iterator<T> = throw IllegalStateException("")
+    operator fun iterator(): Iterator<T> = throw IllegalStateException("")
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/get.0.kt

@@ -2,7 +2,7 @@
 // OPTIONS: usages
 
 class B(val n: Int) {
-    fun <caret>get(i: Int): B = B(i)
+    operator fun <caret>get(i: Int): B = B(i)
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/getAsPropertyDelegate.0.kt

@@ -4,7 +4,7 @@
 import kotlin.reflect.KProperty
 
 class Delegate() {
-    fun <caret>getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
+    operator fun <caret>getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
 }
 
 val p: String by Delegate()

idea/testData/findUsages/kotlin/conventions/inc.0.kt

@@ -2,7 +2,7 @@
 // OPTIONS: usages
 
 class A(val n: Int) {
-    fun <caret>inc(): A = A(n + 1)
+    operator fun <caret>inc(): A = A(n + 1)
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/plus.0.kt

@@ -2,8 +2,8 @@
 // OPTIONS: usages
 
 class A(val n: Int) {
-    fun <caret>plus(m: Int): A = A(n + m)
-    fun plus(a: A): A = this + a.n
+    operator fun <caret>plus(m: Int): A = A(n + m)
+    operator fun plus(a: A): A = this + a.n
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/plus.log

@@ -0,0 +1,28 @@
+Checked type of a
+Checked type of a
+Resolved A(0) + A(1)
+Resolved A(0) + A(1)
+Resolved A(0) + A(1) + 2
+Resolved A(0) + A(1) + 2
+Resolved A(0) + A(1) + 2
+Resolved A(0) + A(1) + 2
+Resolved A(0) + A(1) + 2
+Resolved A(0) + A(1) + 2
+Resolved a += 1
+Resolved a += 1
+Resolved a += A(1)
+Resolved a += A(1)
+Searched references to A
+Searched references to A
+Searched references to A.plus() in Kotlin files
+Searched references to A.plus() in Kotlin files
+Searched references to A.plus() in Kotlin files
+Searched references to A.plus() in Kotlin files
+Searched references to a in Kotlin files
+Searched references to a in Kotlin files
+Searched references to parameter a in A.plus() in Kotlin files
+Searched references to parameter a in A.plus() in Kotlin files
+Used plain search in LocalSearchScope:
+    CLASS:A
+Used plain search in LocalSearchScope:
+    CLASS:A

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

@@ -2,4 +2,4 @@ Function call 10 A(0) + A(1) + 2
 Function call 11 A(0) plus A(1) plus 2
 Function call 12 A(0).plus(A(1).plus(2))
 Function call 15 a += 1
-Function call 6 fun plus(a: A): A = this + a.n
+Function call 6 operator fun plus(a: A): A = this + a.n

idea/testData/findUsages/kotlin/conventions/plusAssign.0.kt

@@ -2,11 +2,11 @@
 // OPTIONS: usages
 
 class A(var n: Int) {
-    fun <caret>plusAssign(m: Int) {
+    operator fun <caret>plusAssign(m: Int) {
         n += m
     }
 
-    fun plusAssign(a: A) {
+    operator fun plusAssign(a: A) {
         this += a.n
     }
 }

idea/testData/findUsages/kotlin/conventions/propertyDelegatedFunction.0.kt

@@ -4,8 +4,9 @@
 import kotlin.reflect.KProperty
 
 class Delegate() {
-    fun getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
-    fun setValue(thisRef: Any?, property: KProperty<*>, value: String) {
+    operator fun getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
+
+    operator fun setValue(thisRef: Any?, property: KProperty<*>, value: String) {
     }
 
     fun <caret>propertyDelegated(property: KProperty<*>) {

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

@@ -1 +1 @@
-Property delegation 15 var p: String by Delegate()
+Property delegation 16 var p: String by Delegate()

idea/testData/findUsages/kotlin/conventions/set.0.kt

@@ -2,7 +2,7 @@
 // OPTIONS: usages
 
 class B(val n: Int) {
-    fun <caret>set(i: Int, a: B) {}
+    operator fun <caret>set(i: Int, a: B) {}
 }
 
 fun test() {

idea/testData/findUsages/kotlin/conventions/setAsPropertyDelegate.0.kt

@@ -4,8 +4,9 @@
 import kotlin.reflect.KProperty
 
 class Delegate() {
-    fun getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
-    fun <caret>setValue(thisRef: Any?, property: KProperty<*>, value: String) {
+    operator fun getValue(thisRef: Any?, property: KProperty<*>): String = ":)"
+
+    operator fun <caret>setValue(thisRef: Any?, property: KProperty<*>, value: String) {
 
     }
 }

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

@@ -1 +1 @@
-Property delegation 13 var p: String by Delegate()
+Property delegation 14 var p: String by Delegate()