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| author | Matthew Hall <hallmatthew314@gmail.com> | 2023-03-11 22:57:31 +1300 |
|---|---|---|
| committer | Matthew Hall <hallmatthew314@gmail.com> | 2023-03-11 22:57:31 +1300 |
| commit | df556b703bdeb860405a8f4ec1698a032f93af07 (patch) | |
| tree | 570ce92b6818598e7f45d6796c60941114e8c33c /src/parcom.cr | |
| parent | 9143a4464ba92a50b250575b824a6635ac5bf0fe (diff) | |
Documentation for Plus
Diffstat (limited to 'src/parcom.cr')
| -rw-r--r-- | src/parcom.cr | 35 |
1 files changed, 0 insertions, 35 deletions
diff --git a/src/parcom.cr b/src/parcom.cr index 6c17596..acb0503 100644 --- a/src/parcom.cr +++ b/src/parcom.cr @@ -81,41 +81,6 @@ module Parcom end end - class Phrase(T, V) < Parser(T, V) - @p : Map(T, {V, Nil}, V) - - def initialize(p : Parser(T, V)) - @p = (p + EOF(T).new).map &.first - end - - def parse(tokens : Tokens(T)) : Result(T, V) - @p.parse(tokens) - rescue ex : ParserFail - raise ParserFail.new("Phrase: #{ex.message}") - end - end - - class Plus(T, V, U) < Parser(T, {V, U}) - def initialize(@p1 : Parser(T, V), @p2 : Parser(T, U)) - end - - def parse(tokens : Tokens(T)) : Result(T, {V, U}) - begin - r1 = @p1.parse(tokens) - rescue ex : ParserFail - raise ParserFail.new("Plus (left): #{ex.message}") - end - - begin - r2 = @p2.parse(r1.tokens) - rescue ex : ParserFail - raise ParserFail.new("Plus (right): #{ex.message}") - end - - Result.new(r2.tokens, {r1.value, r2.value}) - end - end - class Left(T, V, U) < Parser(T, V) @p : Map(T, {V, U}, V) |
