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-rw-r--r--compiler/parser/Lexer.x9
1 files changed, 7 insertions, 2 deletions
diff --git a/compiler/parser/Lexer.x b/compiler/parser/Lexer.x
index 823fc6dbc9..6b73981350 100644
--- a/compiler/parser/Lexer.x
+++ b/compiler/parser/Lexer.x
@@ -1120,8 +1120,8 @@ new_layout_context strict span _buf _len = do
(AI l _) <- getInput
let offset = srcLocCol l
ctx <- getContext
- relaxed <- extension relaxedLayout
- let strict' = strict || not relaxed
+ nondecreasing <- extension nondecreasingIndentation
+ let strict' = strict || not nondecreasing
case ctx of
Layout prev_off : _ |
(strict' && prev_off >= offset ||
@@ -1778,6 +1778,8 @@ alternativeLayoutRuleBit :: Int
alternativeLayoutRuleBit = 23
relaxedLayoutBit :: Int
relaxedLayoutBit = 24
+nondecreasingIndentationBit :: Int
+nondecreasingIndentationBit = 25
always :: Int -> Bool
always _ = True
@@ -1823,6 +1825,8 @@ alternativeLayoutRule :: Int -> Bool
alternativeLayoutRule flags = testBit flags alternativeLayoutRuleBit
relaxedLayout :: Int -> Bool
relaxedLayout flags = testBit flags relaxedLayoutBit
+nondecreasingIndentation :: Int -> Bool
+nondecreasingIndentation flags = testBit flags nondecreasingIndentationBit
-- PState for parsing options pragmas
--
@@ -1877,6 +1881,7 @@ mkPState flags buf loc =
.|. newQualOpsBit `setBitIf` xopt Opt_NewQualifiedOperators flags
.|. alternativeLayoutRuleBit `setBitIf` xopt Opt_AlternativeLayoutRule flags
.|. relaxedLayoutBit `setBitIf` xopt Opt_RelaxedLayout flags
+ .|. nondecreasingIndentationBit `setBitIf` xopt Opt_NondecreasingIndentation flags
--
setBitIf :: Int -> Bool -> Int
b `setBitIf` cond | cond = bit b