Extract comparison operators

Author: tamasvajk

java/kotlin-extractor2/src/main/kotlin/KotlinFileExtractor.kt

@@ -3767,46 +3767,6 @@ OLD: KE1
                     // We need to handle all the builtin operators defines in BuiltInOperatorNames in
                     //     compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/IrBuiltIns.kt
                     // as they can't be extracted as external dependencies.
-                    isBuiltinCallInternal(c, "less") -> {
-                        if (c.origin != IrStatementOrigin.LT) {
-                            logger.warnElement("Unexpected origin for LT: ${c.origin}", c)
-                        }
-                        val id = tw.getFreshIdLabel<DbLtexpr>()
-                        val type = useType(c.type)
-                        tw.writeExprs_ltexpr(id, type.javaResult.id, parent, idx)
-                        tw.writeExprsKotlinType(id, type.kotlinResult.id)
-                        binOp(id, c, callable, enclosingStmt)
-                    }
-                    isBuiltinCallInternal(c, "lessOrEqual") -> {
-                        if (c.origin != IrStatementOrigin.LTEQ) {
-                            logger.warnElement("Unexpected origin for LTEQ: ${c.origin}", c)
-                        }
-                        val id = tw.getFreshIdLabel<DbLeexpr>()
-                        val type = useType(c.type)
-                        tw.writeExprs_leexpr(id, type.javaResult.id, parent, idx)
-                        tw.writeExprsKotlinType(id, type.kotlinResult.id)
-                        binOp(id, c, callable, enclosingStmt)
-                    }
-                    isBuiltinCallInternal(c, "greater") -> {
-                        if (c.origin != IrStatementOrigin.GT) {
-                            logger.warnElement("Unexpected origin for GT: ${c.origin}", c)
-                        }
-                        val id = tw.getFreshIdLabel<DbGtexpr>()
-                        val type = useType(c.type)
-                        tw.writeExprs_gtexpr(id, type.javaResult.id, parent, idx)
-                        tw.writeExprsKotlinType(id, type.kotlinResult.id)
-                        binOp(id, c, callable, enclosingStmt)
-                    }
-                    isBuiltinCallInternal(c, "greaterOrEqual") -> {
-                        if (c.origin != IrStatementOrigin.GTEQ) {
-                            logger.warnElement("Unexpected origin for GTEQ: ${c.origin}", c)
-                        }
-                        val id = tw.getFreshIdLabel<DbGeexpr>()
-                        val type = useType(c.type)
-                        tw.writeExprs_geexpr(id, type.javaResult.id, parent, idx)
-                        tw.writeExprsKotlinType(id, type.kotlinResult.id)
-                        binOp(id, c, callable, enclosingStmt)
-                    }
                     isBuiltinCallInternal(c, "EQEQ") -> {
                         if (c.origin != IrStatementOrigin.EQEQ) {
                             logger.warnElement("Unexpected origin for EQEQ: ${c.origin}", c)

java/kotlin-extractor2/src/main/kotlin/entities/Expression.kt

@@ -318,8 +318,21 @@ private fun KotlinFileExtractor.extractBinaryExpression(
         extractBinaryExpression(expression, callable, parent, tw::writeExprs_eqexpr)
     } else if (op == KtTokens.EXCLEQEQEQ && target == null) {
         extractBinaryExpression(expression, callable, parent, tw::writeExprs_neexpr)
+    } else if (op in listOf(KtTokens.LT, KtTokens.GT, KtTokens.LTEQ, KtTokens.GTEQ)) {
+        if (target.isNumericWithName("compareTo")) {
+            when (op) {
+                KtTokens.LT -> extractBinaryExpression(expression, callable, parent, tw::writeExprs_ltexpr)
+                KtTokens.GT -> extractBinaryExpression(expression, callable, parent, tw::writeExprs_gtexpr)
+                KtTokens.LTEQ -> extractBinaryExpression(expression, callable, parent, tw::writeExprs_leexpr)
+                KtTokens.GTEQ -> extractBinaryExpression(expression, callable, parent, tw::writeExprs_gtexpr)
+                else -> TODO("error")
+            }
+        } else {
+            TODO("Extract lowered equivalent call, such as `a.compareTo(b) < 0`")
+        }
+
     } else {
-        // todo: other operators, such as .., ..<, in, !in, +=, -=, *=, /=, %=, <, >, <=, >=, ==, !=,
+        // todo: other operators, such as .., ..<, in, !in, =, +=, -=, *=, /=, %=, ==, !=,
         TODO("Extract as method call")
     }
 }