diff options
Diffstat (limited to 'stdlib/source')
| -rw-r--r-- | stdlib/source/lux/tool/compiler/default/syntax.lux | 191 |
1 files changed, 93 insertions, 98 deletions
diff --git a/stdlib/source/lux/tool/compiler/default/syntax.lux b/stdlib/source/lux/tool/compiler/default/syntax.lux index e63fd742f..19474e74d 100644 --- a/stdlib/source/lux/tool/compiler/default/syntax.lux +++ b/stdlib/source/lux/tool/compiler/default/syntax.lux @@ -189,6 +189,11 @@ (let [[where::file where::line where::column] where] [where::file (!inc where::line) 0])) +(template: (!forward length where) + ## (-> Nat Cursor Cursor) + (let [[where::file where::line where::column] where] + [where::file where::line (!n/+ length where::column)])) + (template: (!vertical where offset source-code) [(!new-line where) (!inc offset) @@ -201,8 +206,8 @@ (template [<name> <close> <tag> <context>] [(def: (<name> parse source) (-> (Parser Code) (Parser Code)) - (let [[where _ _] source] - (loop [source source + (let [[where offset source-code] source] + (loop [source (: Source [(!forward 1 where) offset source-code]) stack (: (List Code) #.Nil)] (case (parse source) (#.Right [source' top]) @@ -223,8 +228,8 @@ (def: (parse-record parse source) (-> (Parser Code) (Parser Code)) - (let [[where _ _] source] - (loop [source source + (let [[where offset source-code] source] + (loop [source (: Source [(!forward 1 where) offset source-code]) stack (: (List [Code Code]) #.Nil)] (case (parse source) (#.Right [sourceF field]) @@ -385,104 +390,97 @@ (recur (!inc end)) <output>)))))) -(with-expansions [<consume-1> (as-is [where (!inc offset/0) source-code]) - <consume-2> (as-is [where (!inc/2 offset/0) source-code])] - - (template: (!parse-half-name @offset @char @module) - (cond (!name-char?|head @char) - (!letE [source' name] (..parse-name-part @offset [where (!inc @offset) source-code]) - (#.Right [source' [@module name]])) +(template: (!parse-half-name @offset @char @module) + (cond (!name-char?|head @char) + (!letE [source' name] (..parse-name-part @offset [where (!inc @offset) source-code]) + (#.Right [source' [@module name]])) + + ## else + (!failure ..!parse-half-name where @offset source-code))) + +(`` (def: (parse-short-name current-module [where offset/0 source-code]) + (-> Text (Parser Name)) + (<| (!with-char source-code offset/0 char/0 + (!end-of-file where offset/0 source-code current-module)) + (if (!n/= (char (~~ (static ..name-separator))) char/0) + (let [offset/1 (!inc offset/0)] + (<| (!with-char source-code offset/1 char/1 + (!end-of-file where offset/1 source-code current-module)) + (!parse-half-name offset/1 char/1 current-module))) + (!parse-half-name offset/0 char/0 ..prelude))))) + +(template: (!parse-short-name @current-module @source @where @tag) + (!letE [source' name] (..parse-short-name @current-module @source) + (#.Right [source' [@where (@tag name)]]))) + +(with-expansions [<simple> (as-is (#.Right [source' ["" simple]]))] + (`` (def: (parse-full-name aliases start source) + (-> Aliases Offset (Parser Name)) + (!letE [source' simple] (..parse-name-part start source) + (let [[where' offset' source-code'] source'] + (<| (!with-char source-code' offset' char/separator <simple>) + (if (!n/= (char (~~ (static ..name-separator))) char/separator) + (let [offset'' (!inc offset')] + (!letE [source'' complex] (..parse-name-part offset'' [(!forward 1 where') offset'' source-code']) + (if ("lux text =" "" complex) + (let [[where offset source-code] source] + (!failure ..parse-full-name where offset source-code)) + (#.Right [source'' [(|> aliases + (dictionary.get simple) + (maybe.default simple)) + complex]])))) + <simple>))))))) + +(template: (!parse-full-name @offset @source @where @aliases @tag) + (!letE [source' full-name] (..parse-full-name @aliases @offset @source) + (#.Right [source' [@where (@tag full-name)]]))) + +## TODO: Grammar macro for specifying syntax. +## (grammar: lux-grammar +## [expression ...] +## [form "(" [#* expression] ")"]) - ## else - (!failure ..!parse-half-name where @offset source-code))) - - (`` (def: (parse-short-name current-module [where offset/0 source-code]) - (-> Text (Parser Name)) - (<| (!with-char source-code offset/0 char/0 - (!end-of-file where offset/0 source-code current-module)) - (if (!n/= (char (~~ (static ..name-separator))) char/0) - (let [offset/1 (!inc offset/0)] - (<| (!with-char source-code offset/1 char/1 - (!end-of-file where offset/1 source-code current-module)) - (!parse-half-name offset/1 char/1 current-module))) - (!parse-half-name offset/0 char/0 ..prelude))))) - - (template: (!parse-short-name @current-module @source @where @tag) - (!letE [source' name] (..parse-short-name @current-module @source) - (#.Right [source' [@where (@tag name)]]))) - - (with-expansions [<simple> (as-is (#.Right [source' ["" simple]]))] - (`` (def: (parse-full-name aliases start source) - (-> Aliases Offset (Parser Name)) - (!letE [source' simple] (..parse-name-part start source) - (let [[where' offset' source-code'] source'] - (<| (!with-char source-code' offset' char/separator <simple>) - (if (!n/= (char (~~ (static ..name-separator))) char/separator) - (let [offset'' (!inc offset')] - (!letE [source'' complex] (..parse-name-part offset'' [where' offset'' source-code']) - (if ("lux text =" "" complex) - (let [[where offset source-code] source] - (!failure ..parse-full-name where offset source-code)) - (#.Right [source'' [(|> aliases - (dictionary.get simple) - (maybe.default simple)) - complex]])))) - <simple>))))))) - - (template: (!parse-full-name @offset @source @where @aliases @tag) - (!letE [source' full-name] (..parse-full-name @aliases @offset @source) - (#.Right [source' [@where (@tag full-name)]]))) - - ## TODO: Grammar macro for specifying syntax. - ## (grammar: lux-grammar - ## [expression ...] - ## [form "(" [#* expression] ")"]) +(with-expansions [<consume-1> (as-is [where (!inc offset/0) source-code]) + <move-1> (as-is [(!forward 1 where) (!inc offset/0) source-code]) + <consume-2> (as-is [where (!inc/2 offset/0) source-code]) + <recur> (as-is (parse current-module aliases source-code//size)) + <horizontal-move> (as-is (recur (!horizontal where offset/0 source-code)))] (template: (!close closer) (#.Left [<consume-1> closer])) - - (with-expansions [<recur> (as-is (parse current-module aliases source-code//size)) - <horizontal-move> (as-is (recur (!horizontal where offset/0 source-code)))] - (def: #export (parse current-module aliases source-code//size) - (-> Text Aliases Nat (Parser Code)) - ## The "exec []" is only there to avoid function fusion. - ## This is to preserve the loop as much as possible and keep it tight. - (exec [] - (function (recur [where offset/0 source-code]) - (<| (!with-char+ source-code//size source-code offset/0 char/0 - (!end-of-file where offset/0 source-code current-module)) - ## TODO: Add ..space as just another case for "lux syntax char case!" ASAP. - ## It"s currently failing for some reason. + + (def: #export (parse current-module aliases source-code//size) + (-> Text Aliases Nat (Parser Code)) + ## The "exec []" is only there to avoid function fusion. + ## This is to preserve the loop as much as possible and keep it tight. + (exec [] + (function (recur [where offset/0 source-code]) + (<| (!with-char+ source-code//size source-code offset/0 char/0 + (!end-of-file where offset/0 source-code current-module)) + ## TODO: Add ..space as just another case for "lux syntax char case!" ASAP. + ## It"s currently failing for some reason. + (with-expansions [<composites> (template [<open> <close> <parser>] + [[(~~ (static <open>))] + (<parser> <recur> <consume-1>) + + [(~~ (static <close>))] + (!close <close>)] + + [..open-form ..close-form parse-form] + [..open-tuple ..close-tuple parse-tuple] + [..open-record ..close-record parse-record] + )] (`` (if (!n/= (char (~~ (static ..space))) char/0) <horizontal-move> ("lux syntax char case!" char/0 - [## New line - [(~~ (static text.carriage-return))] + [[(~~ (static text.carriage-return))] <horizontal-move> + ## New line [(~~ (static text.new-line))] (recur (!vertical where offset/0 source-code)) - ## Form - [(~~ (static ..open-form))] - (parse-form <recur> <consume-1>) - - [(~~ (static ..close-form))] - (!close ..close-form) - - ## Tuple - [(~~ (static ..open-tuple))] - (parse-tuple <recur> <consume-1>) - - [(~~ (static ..close-tuple))] - (!close ..close-tuple) - - ## Record - [(~~ (static ..open-record))] - (parse-record <recur> <consume-1>) - - [(~~ (static ..close-record))] - (!close ..close-record) + <composites> ## Text [(~~ (static ..text-delimiter))] @@ -530,8 +528,7 @@ (<| (!with-char+ source-code//size source-code offset/1 char/1 (!end-of-file where offset/1 source-code current-module)) (if (!digit? char/1) - (let [offset/2 (!inc offset/1)] - (!parse-rev source-code//size offset/0 where offset/2 source-code)) + (!parse-rev source-code//size offset/0 where (!inc offset/1) source-code) (!parse-short-name current-module [where offset/1 source-code] where #.Identifier)))) [(~~ (static ..positive-sign)) @@ -542,11 +539,9 @@ ## else (if (!digit? char/0) ## Natural number - (let [offset/1 (!inc offset/0)] - (!parse-nat source-code//size offset/0 where offset/1 source-code)) + (!parse-nat source-code//size offset/0 where (!inc offset/0) source-code) ## Identifier (!parse-full-name offset/0 <consume-1> where aliases #.Identifier)) - ))) - ))) - )) - ) + )))) + ))) + )) |