KT-8263: Conditional operators are not parsed correctly

compiler/testData/diagnostics/tests/syntax/complicatedLTGT.fir.kt

@@ -1,8 +0,0 @@
-// SKIP_TXT
-// ISSUE: KT-8263
-
-fun test(x: Int, y: Int) {
-    if (<!CONDITION_TYPE_MISMATCH!>x < (<!SYNTAX!>if<!><!SYNTAX!><!> <!SYNTAX!>(<!><!UNRESOLVED_REFERENCE!><!SYNTAX!><!>y<!> ><!><!SYNTAX!><!> 115<!SYNTAX!>) 1 else 2))<!> {
-        Unit
-    }
-}

compiler/testData/diagnostics/tests/syntax/complicatedLTGT.kt

@@ -1,8 +1,9 @@
+// FIR_IDENTICAL
 // SKIP_TXT
 // ISSUE: KT-8263
 
 fun test(x: Int, y: Int) {
-    if (<!UNRESOLVED_REFERENCE!>x<!> < (<!SYNTAX!>if<!><!SYNTAX!><!> <!SYNTAX!>(<!><!UNRESOLVED_REFERENCE!><!SYNTAX!><!>y<!> ><!SYNTAX!><!> 115<!SYNTAX!>) 1 else 2))<!> {
+    if (x < (if (y > 115) 1 else 2)) {
         Unit
     }
 }

compiler/testData/diagnostics/tests/typeArguments/allowTypeArgumentListLikeExpressions.kt

@@ -0,0 +1,22 @@
+// FIR_IDENTICAL
+// !LANGUAGE: +AllowTypeArgumentListLikeExpressions
+// ISSUE: KT-8263
+
+fun f(x: Int, y: Int, z: () -> Any, a: (Boolean, Boolean) -> Unit, b: (Any?) -> Unit) {
+    a(x < -1, (-3) > 3)
+    a(x < (-1), -3 > 3)
+    a(x < (-1), (-3) > 3)
+    a(x < y, -3 > 3)
+    a(x < y, x > 2)
+
+    b(x < if (y > (0)) y else 0)
+    b(x < (if (y > (0)) y else 0))
+    b(x < when (y > (0)) { else -> 0 })
+    b(x < (when (y > (0)) { else -> 0 }))
+
+    b(z() as Int < 15)
+    b(z() as Int < y)
+    b(z() is Int < true)
+    b(z() !is Int < true)
+    b(z() !is Int < true > false)
+}

compiler/testData/diagnostics/tests/typeArguments/allowTypeArgumentListLikeExpressions.txt

@@ -0,0 +1,4 @@
+package
+
+public fun f(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.Int, /*2*/ z: () -> kotlin.Any, /*3*/ a: (kotlin.Boolean, kotlin.Boolean) -> kotlin.Unit, /*4*/ b: (kotlin.Any?) -> kotlin.Unit): kotlin.Unit
+

compiler/testData/diagnostics/tests/typeArguments/forbidTypeArgumentListLikeExpressions.fir.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: -AllowTypeArgumentListLikeExpressions
+// ISSUE: KT-8263
+
+fun f(x: Int, y: Int, z: () -> Any, a: (Boolean, Boolean) -> Unit, b: (Any?) -> Unit) {
+    a(x < -1, (-3) > 3)
+    a(x < (-1), -3 > 3)
+    a(x < (-1), (-3) > 3)
+    a(x < y, -3 > 3)
+    a(x < y, x > 2)
+
+    b(x < if (y > (0)) y else 0)
+    b(x < (if (y > (0)) y else 0))
+    b(x < when (y > (0)) { else -> 0 })
+    b(x < (when (y > (0)) { else -> 0 }))
+
+    b(z() as Int < 15)
+    b(z() as Int < y)
+    b(z() is Int < true)
+    b(z() !is Int < true)
+    b(z() !is Int < true > false)
+}

compiler/testData/diagnostics/tests/typeArguments/forbidTypeArgumentListLikeExpressions.kt

@@ -0,0 +1,21 @@
+// !LANGUAGE: -AllowTypeArgumentListLikeExpressions
+// ISSUE: KT-8263
+
+fun f(x: Int, y: Int, z: () -> Any, a: (Boolean, Boolean) -> Unit, b: (Any?) -> Unit) {
+    a(x < -1, (-3) > 3)
+    a(x < (-1), -3 > 3)
+    a(x <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> (-1), (-3) > 3)
+    a(x < y, -3 > 3)
+    a(x <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> y, x > 2)
+
+    b(x < if (y > (0)) y else 0)
+    b(x <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> (if (y > (0)) y else 0))
+    b(x < when (y > (0)) { else -> 0 })
+    b(x <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> (when (y > (0)) { else -> 0 }))
+
+    b(z() as Int <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> 15)
+    b(z() as Int <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> y)
+    b(z() is Int <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> true)
+    b(z() !is Int <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> true)
+    b(z() !is Int <!TYPE_ARGUMENT_LIST_LIKE_EXPRESSION!><<!> true > false)
+}

compiler/testData/diagnostics/tests/typeArguments/forbidTypeArgumentListLikeExpressions.txt

@@ -0,0 +1,4 @@
+package
+
+public fun f(/*0*/ x: kotlin.Int, /*1*/ y: kotlin.Int, /*2*/ z: () -> kotlin.Any, /*3*/ a: (kotlin.Boolean, kotlin.Boolean) -> kotlin.Unit, /*4*/ b: (kotlin.Any?) -> kotlin.Unit): kotlin.Unit
+