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module T3972A (Expr(..), Token(..), spanning, getSpan) where
class Span a where
getSpan :: a -> SrcSpan
spanning :: (Span a, Span b) => a -> b -> SrcSpan
spanning x y = combineSrcSpans (getSpan x) (getSpan y)
instance Span a => Span [a] where
getSpan [] = error "[]"
getSpan [x] = getSpan x
getSpan list@(x:_) = combineSrcSpans (getSpan x) (getSpan (last list))
data SrcSpan
= SpanMultiLine
{ span_start_row :: !Int
, span_start_column :: !Int
, span_end_row :: !Int
, span_end_column :: !Int
}
combineSrcSpans :: SrcSpan -> SrcSpan -> SrcSpan
combineSrcSpans start end
= case row1 `compare` row2 of
LT -> SpanMultiLine row1 col1 row2 col2
_ -> SpanMultiLine row2 col2 row1 col1
where
row1 = startRow start
col1 = startCol start
row2 = endRow end
col2 = endCol end
startRow :: SrcSpan -> Int
startRow (SpanMultiLine { span_start_row = row }) = row
endRow :: SrcSpan -> Int
endRow (SpanMultiLine { span_end_row = row }) = row
startCol :: SrcSpan -> Int
startCol (SpanMultiLine { span_start_column = col }) = col
endCol :: SrcSpan -> Int
endCol (SpanMultiLine { span_end_column = col }) = col
data Token
= T10 { token_SrcSpan :: SrcSpan }
| T11 { token_SrcSpan :: SrcSpan }
| T12 { token_SrcSpan :: SrcSpan }
| T13 { token_SrcSpan :: SrcSpan }
| T14 { token_SrcSpan :: SrcSpan }
| T15 { token_SrcSpan :: SrcSpan }
| T16 { token_SrcSpan :: SrcSpan }
| T17 { token_SrcSpan :: SrcSpan }
| T18 { token_SrcSpan :: SrcSpan }
| T19 { token_SrcSpan :: SrcSpan }
| T20 { token_SrcSpan :: SrcSpan }
| T21 { token_SrcSpan :: SrcSpan }
| T22 { token_SrcSpan :: SrcSpan }
| T23 { token_SrcSpan :: SrcSpan }
| T24 { token_SrcSpan :: SrcSpan }
instance Span Token where
getSpan = token_SrcSpan
data Expr
= E10 { expr_SrcSpan :: SrcSpan }
| E11 { expr_SrcSpan :: SrcSpan }
| E12 { expr_SrcSpan :: SrcSpan }
| E13 { expr_SrcSpan :: SrcSpan }
| E14 { expr_SrcSpan :: SrcSpan }
| E15 { expr_SrcSpan :: SrcSpan }
| E16 { expr_SrcSpan :: SrcSpan }
| E17 { expr_SrcSpan :: SrcSpan }
| E18 { expr_SrcSpan :: SrcSpan }
| E19 { expr_SrcSpan :: SrcSpan }
| E20 { expr_SrcSpan :: SrcSpan }
| E21 { expr_SrcSpan :: SrcSpan }
| E22 { expr_SrcSpan :: SrcSpan }
| E23 { expr_SrcSpan :: SrcSpan }
| E24 { expr_SrcSpan :: SrcSpan }
instance Span Expr where
getSpan = expr_SrcSpan
|
