diff options
Diffstat (limited to '')
| -rw-r--r-- | stdlib/source/lux/macro/syntax.lux | 44 |
1 files changed, 16 insertions, 28 deletions
diff --git a/stdlib/source/lux/macro/syntax.lux b/stdlib/source/lux/macro/syntax.lux index b18e0763f..e31b8c876 100644 --- a/stdlib/source/lux/macro/syntax.lux +++ b/stdlib/source/lux/macro/syntax.lux @@ -194,13 +194,8 @@ (wrap [real value])))) ## [Syntax] -(def: #hidden text/join-with text.join-with) - -(def: #hidden _run_ p.run) -(def: #hidden _Monad<Parser>_ p.Monad<Parser>) - (macro: #export (syntax: tokens) - {#.doc (doc "A more advanced way to define macros than macro:." + {#.doc (doc "A more advanced way to define macros than \"macro:\"." "The inputs to the macro can be parsed in complex ways through the use of syntax parsers." "The macro body is also (implicitly) run in the Monad<Meta>, to save some typing." "Also, the compiler state can be accessed through the *compiler* binding." @@ -216,16 +211,13 @@ (with-brackets (spaced (list/map constructor-arg$ constructor-args))) (with-brackets (spaced (list/map (method-def$ id) methods))))))] (wrap (list (` ((~ (code.text def-code)))))))))} - (let [[exported? tokens] (: [(Maybe (Either Unit Unit)) (List Code)] + (let [[exported? tokens] (: [Bool (List Code)] (case tokens - (^ (list& [_ (#.Tag ["" "hidden"])] tokens')) - [(#.Some #.Left) tokens'] - (^ (list& [_ (#.Tag ["" "export"])] tokens')) - [(#.Some #.Right) tokens'] + [true tokens'] _ - [#.None tokens])) + [false tokens])) ?parts (: (Maybe [Text (List Code) Code Code]) (case tokens (^ (list [_ (#.Form (list& [_ (#.Symbol ["" name])] args))] @@ -241,7 +233,7 @@ #.None))] (case ?parts (#.Some [name args meta body]) - (with-gensyms [g!tokens g!body g!msg] + (with-gensyms [g!text/join-with g!tokens g!body g!error] (do macro.Monad<Meta> [vars+parsers (monad.map @ (: (-> Code (Meta [Code Code])) @@ -258,29 +250,25 @@ args) #let [g!state (code.symbol ["" "*compiler*"]) error-msg (code.text (text/compose "Wrong syntax for " name)) - export-ast (: (List Code) (case exported? - (#.Some #.Left) - (list (' #hidden)) - - (#.Some #.Right) - (list (' #export)) - - _ - (list)))]] - (wrap (list (` (macro: (~@ export-ast) ((~ (code.symbol ["" name])) (~ g!tokens) (~ g!state)) + export-ast (: (List Code) + (if exported? + (list (' #export)) + (list)))]] + (wrap (list (` (macro: (~+ export-ast) ((~ (code.symbol ["" name])) (~ g!tokens) (~ g!state)) (~ meta) ("lux case" (..run (~ g!tokens) (: (Syntax (Meta (List Code))) - (do .._Monad<Parser>_ - [(~@ (join-pairs vars+parsers))] - ((~' wrap) (do macro.Monad<Meta> + (do (~! p.Monad<Parser>) + [(~+ (join-pairs vars+parsers))] + ((~' wrap) (do (~! macro.Monad<Meta>) [] (~ body)))))) {(#E.Success (~ g!body)) ((~ g!body) (~ g!state)) - (#E.Error (~ g!msg)) - (#E.Error (text/join-with ": " (list (~ error-msg) (~ g!msg))))}))))))) + (#E.Error (~ g!error)) + (let [(~ g!text/join-with) (~! text.join-with)] + (#E.Error ((~ g!text/join-with) ": " (list (~ error-msg) (~ g!error)))))}))))))) _ (macro.fail "Wrong syntax for syntax:")))) |