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compiler bug with that can cause compilation infinite loop; object is always comparable to self instance or null

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This commit is contained in:
Sergey Chernov 2026-01-03 19:20:40 +01:00
parent bc6613ec01
commit ce021e85f4
2 changed files with 11 additions and 10 deletions
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17
lynglib/src/commonMain/kotlin/net/sergeych/lyng/Parser.kt
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@ -1,5 +1,5 @@
/* /*
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -324,15 +324,14 @@ private class Parser(fromPos: Pos) {
} }
'?' -> { '?' -> {
when (currentChar.also { pos.advance() }) { when (currentChar) {
':' -> Token("??", from, Token.Type.ELVIS) ':' -> { pos.advance(); Token("?:", from, Token.Type.ELVIS) }
'?' -> Token("??", from, Token.Type.ELVIS) '?' -> { pos.advance(); Token("??", from, Token.Type.ELVIS) }
'.' -> Token("?.", from, Token.Type.NULL_COALESCE) '.' -> { pos.advance(); Token("?.", from, Token.Type.NULL_COALESCE) }
'[' -> Token("?(", from, Token.Type.NULL_COALESCE_INDEX) '[' -> { pos.advance(); Token("?[", from, Token.Type.NULL_COALESCE_INDEX) }
'(' -> Token("?(", from, Token.Type.NULL_COALESCE_INVOKE) '(' -> { pos.advance(); Token("?(", from, Token.Type.NULL_COALESCE_INVOKE) }
'{' -> Token("?{", from, Token.Type.NULL_COALESCE_BLOCKINVOKE) '{' -> { pos.advance(); Token("?{", from, Token.Type.NULL_COALESCE_BLOCKINVOKE) }
else -> { else -> {
pos.back()
Token("?", from, Token.Type.QUESTION) Token("?", from, Token.Type.QUESTION)
} }
} }

4
lynglib/src/commonMain/kotlin/net/sergeych/lyng/obj/Obj.kt
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@ -1,5 +1,5 @@
/* /*
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com * Copyright 2026 Sergey S. Chernov real.sergeych@gmail.com
* *
* Licensed under the Apache License, Version 2.0 (the "License"); * Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License. * you may not use this file except in compliance with the License.
@ -149,6 +149,8 @@ open class Obj {
// methods that to override // methods that to override
open suspend fun compareTo(scope: Scope, other: Obj): Int { open suspend fun compareTo(scope: Scope, other: Obj): Int {
if( other === this) return 0
if( other === ObjNull ) return 2
scope.raiseNotImplemented() scope.raiseNotImplemented()
} }