Simplify regexp engine init. (#1302)

runtime/src/main/kotlin/kotlin/text/regex/AbstractLineTerminator.kt

@@ -33,31 +33,13 @@
 
 package kotlin.text.regex
 
-/**
+private object unixLT : AbstractLineTerminator() {
- * Line terminator factory
- */
-internal abstract class AbstractLineTerminator {
-
-    /** Checks if the single character is a line terminator or not. */
-    open fun isLineTerminator(char: Char): Boolean = isLineTerminator(char.toInt())
-    /** Checks if the codepoint is a line terminator or not */
-    abstract fun isLineTerminator(codepoint: Int): Boolean
-    /** Checks if the pair of symbols is a line terminator (e.g. for \r\n case) */
-    abstract fun isLineTerminatorPair(char1: Char, char2: Char): Boolean
-    /** Checks if a [checked] character is after a line terminator using the [previous] character.*/
-    abstract fun isAfterLineTerminator(previous: Char, checked: Char): Boolean
-
-    companion object {
-        val unixLT: AbstractLineTerminator by lazy {
-            object : AbstractLineTerminator() {
     override fun isLineTerminator(codepoint: Int): Boolean = (codepoint == '\n'.toInt())
     override fun isLineTerminatorPair(char1: Char, char2: Char): Boolean = false
     override fun isAfterLineTerminator(previous: Char, checked: Char): Boolean = (previous == '\n')
 }
-        }
 
-        val unicodeLT: AbstractLineTerminator by lazy {
+private object unicodeLT : AbstractLineTerminator() {
-            object : AbstractLineTerminator() {
     override fun isLineTerminatorPair(char1: Char, char2: Char): Boolean {
         return char1 == '\r' && char2 == '\n'
     }
@@ -74,8 +56,25 @@ internal abstract class AbstractLineTerminator {
                 || previous == '\r' && checked != '\n'
     }
 }
-        }
 
+/**
+ * Line terminator factory
+ */
+internal abstract class AbstractLineTerminator {
+
+    /** Checks if the single character is a line terminator or not. */
+    open fun isLineTerminator(char: Char): Boolean = isLineTerminator(char.toInt())
+
+    /** Checks if the codepoint is a line terminator or not */
+    abstract fun isLineTerminator(codepoint: Int): Boolean
+
+    /** Checks if the pair of symbols is a line terminator (e.g. for \r\n case) */
+    abstract fun isLineTerminatorPair(char1: Char, char2: Char): Boolean
+
+    /** Checks if a [checked] character is after a line terminator using the [previous] character.*/
+    abstract fun isAfterLineTerminator(previous: Char, checked: Char): Boolean
+
+    companion object {
         fun getInstance(flag: Int): AbstractLineTerminator {
             if (flag and Pattern.UNIX_LINES != 0) {
                 return unixLT