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authorNadrieril2019-04-04 19:51:12 +0200
committerNadrieril2019-04-04 20:24:30 +0200
commit2ef0951c45e3c9c87990ab7e334059aa9b21f540 (patch)
tree3a53797e9b2572fbc0fdb9c1c96e0b6c8b195071 /dhall_parser/src
parentf385e9dabfe3d923a841dc6d99542683cbbbb77a (diff)
Tweak double literals
Diffstat (limited to '')
-rw-r--r--dhall_parser/src/dhall.abnf22
1 files changed, 14 insertions, 8 deletions
diff --git a/dhall_parser/src/dhall.abnf b/dhall_parser/src/dhall.abnf
index ca54215..15fd898 100644
--- a/dhall_parser/src/dhall.abnf
+++ b/dhall_parser/src/dhall.abnf
@@ -305,7 +305,20 @@ arrow = %x2192 / "->"
exponent = "e" [ "+" / "-" ] 1*DIGIT
-double-literal = [ "+" / "-" ] 1*DIGIT ( "." 1*DIGIT [ exponent ] / exponent)
+numeric-double-literal = [ "+" / "-" ] 1*DIGIT ( "." 1*DIGIT [ exponent ] / exponent)
+
+minus-infinity-literal = "-" Infinity
+plus-infinity-literal = Infinity
+
+double-literal =
+ ; "2.0"
+ numeric-double-literal
+ ; "-Infinity"
+ / minus-infinity-literal
+ ; "Infinity"
+ / plus-infinity-literal
+ ; "NaN"
+ / NaN
natural-literal = 1*DIGIT
@@ -627,13 +640,6 @@ literal-expression =
; "+2"
/ integer-literal
- ; "-Infinity"
- / minus-infinity-literal
- ; "Infinity"
- / plus-infinity-literal
- ; "NaN"
- / NaN
-
; '"ABC"'
/ text-literal