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-rw-r--r--stdlib/source/lux/compiler/default/syntax.lux205
-rw-r--r--stdlib/source/lux/data/text/lexer.lux22
2 files changed, 135 insertions, 92 deletions
diff --git a/stdlib/source/lux/compiler/default/syntax.lux b/stdlib/source/lux/compiler/default/syntax.lux
index 50c02c11d..21b142ec0 100644
--- a/stdlib/source/lux/compiler/default/syntax.lux
+++ b/stdlib/source/lux/compiler/default/syntax.lux
@@ -39,9 +39,30 @@
["l" lexer (#+ Lexer)]
format]
[collection
- ["." row (#+ Row)]
["." dictionary (#+ Dictionary)]]]
- ["." function]])
+ ["." function]
+ ["." io]
+ [time
+ ["." instant]
+ ["." duration]]])
+
+(type: #export Syntax
+ (-> Cursor (Lexer [Cursor Code])))
+
+(def: #export (timed description lexer)
+ (All [a]
+ (-> Text (Lexer [Cursor Code]) (Lexer [Cursor Code])))
+ (do p.Monad<Parser>
+ [_ (wrap [])
+ #let [pre (io.run instant.now)]
+ [where output] lexer
+ #let [_ (log! (|> instant.now
+ io.run
+ instant.relative
+ (duration.difference (instant.relative pre))
+ %duration
+ (format (%code output) " [" description "]: ")))]]
+ (wrap [where output])))
(type: #export Aliases (Dictionary Text Text))
(def: #export no-aliases Aliases (dictionary.new text.Hash<Text>))
@@ -56,6 +77,15 @@
(def: text-delimiter "\"")
(def: text-delimiter^ (l.this text-delimiter))
+(def: open-form "(")
+(def: close-form ")")
+
+(def: open-tuple "[")
+(def: close-tuple "]")
+
+(def: open-record "{")
+(def: close-record "}")
+
(def: escape "\\")
(def: sigil "#")
@@ -94,8 +124,8 @@
## This is just a helper parser to find text which doesn't run into
## any special character sequences for multi-line comments.
-(def: multi-line-comment-start^ (l.this (format ..sigil "(")))
-(def: multi-line-comment-end^ (l.this (format ")" ..sigil)))
+(def: multi-line-comment-start^ (l.this (format ..sigil open-form)))
+(def: multi-line-comment-end^ (l.this (format close-form ..sigil)))
(def: multi-line-comment-bound^
(Lexer Any)
@@ -220,7 +250,7 @@
(do-template [<name> <tag> <lexer> <codec>]
[(def: #export (<name> where)
- (-> Cursor (Lexer [Cursor Code]))
+ Syntax
(do p.Monad<Parser>
[chunk <lexer>]
(case (:: <codec> decode chunk)
@@ -242,7 +272,7 @@
)
(def: #export (nat where)
- (-> Cursor (Lexer [Cursor Code]))
+ Syntax
(do p.Monad<Parser>
[chunk rich-digits^]
(case (:: number.Codec<Text,Nat> decode chunk)
@@ -254,7 +284,7 @@
[where (#.Nat value)]]))))
(def: #export (frac where)
- (-> Cursor (Lexer [Cursor Code]))
+ Syntax
(do p.Monad<Parser>
[chunk ($_ l.and
sign^
@@ -277,7 +307,7 @@
## This parser looks so complex because text in Lux can be multi-line
## and there are rules regarding how this is handled.
(def: #export (text where)
- (-> Cursor (Lexer [Cursor Code]))
+ Syntax
(do p.Monad<Parser>
[## Lux text "is delimited by double-quotes", as usual in most
## programming languages.
@@ -289,7 +319,7 @@
## as many spaces as necessary to be column-aligned.
## This helps ensure that the formatting on the text in the
## source-code matches the formatting of the Text value.
- #let [offset-column (inc (get@ #.column where))]
+ #let [offset (inc (get@ #.column where))]
[where' text-read] (: (Lexer [Cursor Text])
## I must keep track of how much of the
## text body has been read, how far the
@@ -308,9 +338,9 @@
## the text's body's column,
## to ensure they are aligned.
(do @
- [_ (l.exactly! offset-column (l.one-of! " "))]
+ [_ (p.exactly offset (l.this " "))]
(recur text-read
- (update@ #.column (n/+ offset-column) where)
+ (update@ #.column (n/+ offset) where)
#0))
($_ p.either
## Normal text characters.
@@ -347,38 +377,43 @@
(wrap [where'
[where (#.Text text-read)]])))
+(def: (composite open close element)
+ (All [a]
+ (-> Text Text
+ (-> Cursor (Lexer [Cursor a]))
+ (-> Cursor (Lexer [Cursor (List a)]))))
+ (let [open^ (l.this open)
+ close^ (l.this close)]
+ (function (_ where)
+ (do p.Monad<Parser>
+ [_ open^]
+ (loop [where where]
+ (p.either (do @
+ [## Must update the cursor as I
+ ## go along, to keep things accurate.
+ [where' head] (element where)]
+ (parser/map (product.both id (|>> (#.Cons head)))
+ (recur where')))
+ (do @
+ [## Must take into account any
+ ## padding present before the
+ ## end-delimiter.
+ where' (left-padding^ where)
+ _ close^]
+ (wrap [(update@ #.column inc where')
+ #.Nil]))))))))
+
## Form and tuple syntax is mostly the same, differing only in the
## delimiters involved.
## They may have an arbitrary number of arbitrary Code nodes as elements.
(do-template [<name> <tag> <open> <close>]
- [(def: (<name> where ast)
- (-> Cursor
- (-> Cursor (Lexer [Cursor Code]))
- (Lexer [Cursor Code]))
- (do p.Monad<Parser>
- [_ (l.this <open>)
- [where' elems] (loop [elems (: (Row Code)
- row.empty)
- where where]
- (p.either (do @
- [## Must update the cursor as I
- ## go along, to keep things accurate.
- [where' elem] (ast where)]
- (recur (row.add elem elems)
- where'))
- (do @
- [## Must take into account any
- ## padding present before the
- ## end-delimiter.
- where' (left-padding^ where)
- _ (l.this <close>)]
- (wrap [(update@ #.column inc where')
- (row.to-list elems)]))))]
- (wrap [where'
- [where (<tag> elems)]])))]
-
- [form #.Form "(" ")"]
- [tuple #.Tuple "[" "]"]
+ [(def: (<name> ast where)
+ (-> Syntax Syntax)
+ (<| (parser/map (product.both id (|>> <tag> [where])))
+ (composite <open> <close> ast where)))]
+
+ [form #.Form ..open-form ..close-form]
+ [tuple #.Tuple ..open-tuple ..close-tuple]
)
## Records are almost (syntactically) the same as forms and tuples,
@@ -390,27 +425,16 @@
## Code node, however, record Code nodes allow any Code node to occupy
## this position, since it may be useful when processing Code syntax in
## macros.
-(def: (record where ast)
- (-> Cursor
- (-> Cursor (Lexer [Cursor Code]))
- (Lexer [Cursor Code]))
- (do p.Monad<Parser>
- [_ (l.this "{")
- [where' elems] (loop [elems (: (Row [Code Code])
- row.empty)
- where where]
- (p.either (do @
- [[where' key] (ast where)
- [where' val] (ast where')]
- (recur (row.add [key val] elems)
- where'))
- (do @
- [where' (left-padding^ where)
- _ (l.this "}")]
- (wrap [(update@ #.column inc where')
- (row.to-list elems)]))))]
- (wrap [where'
- [where (#.Record elems)]])))
+(def: (record ast where)
+ (-> Syntax Syntax)
+ (<| (parser/map (product.both id (|>> #.Record [where])))
+ (composite ..open-record ..close-record
+ (function (_ where')
+ (do p.Monad<Parser>
+ [[where' key] (ast where')
+ [where' val] (ast where')]
+ (wrap [where' [key val]])))
+ where)))
## The parts of an name are separated by a single mark.
## E.g. module.short.
@@ -436,8 +460,13 @@
## a digit, to avoid confusion with regards to numbers.
(def: name-part^
(Lexer Text)
- (let [delimiters (format "()[]{}" ..sigil ..text-delimiter ..name-separator)
- space (format white-space new-line)
+ (let [delimiters (format ..open-form ..close-form
+ ..open-tuple ..close-tuple
+ ..open-record ..close-record
+ ..sigil
+ ..text-delimiter
+ ..name-separator)
+ space (format ..white-space ..new-line)
head (l.none-of! (format ..digits delimiters space))
tail (l.some! (l.none-of! (format delimiters space)))]
(l.slice (l.and! head tail))))
@@ -491,13 +520,14 @@
(text.size first-part)])))))
(do-template [<name> <pre> <tag> <length>]
- [(def: #export (<name> current-module aliases where)
- (-> Text Aliases Cursor (Lexer [Cursor Code]))
- (do p.Monad<Parser>
- [[value length] (<| <pre>
- (name^ current-module aliases))]
- (wrap [(update@ #.column (n/+ <length>) where)
- [where (<tag> value)]])))]
+ [(def: #export (<name> current-module aliases)
+ (-> Text Aliases Syntax)
+ (function (_ where)
+ (do p.Monad<Parser>
+ [[value length] (<| <pre>
+ (name^ current-module aliases))]
+ (wrap [(update@ #.column (n/+ <length>) where)
+ [where (<tag> value)]]))))]
[tag (p.after (l.this ..sigil)) #.Tag ("lux i64 +" 1 length)]
[identifier (|>) #.Identifier length]
@@ -513,7 +543,7 @@
)
(def: #export (bit where)
- (-> Cursor (Lexer [Cursor Code]))
+ Syntax
(do p.Monad<Parser>
[value (p.either ..false ..true)]
(wrap [(update@ #.column (n/+ 2) where)
@@ -528,22 +558,33 @@
["Column" (%n column)]))
(def: (ast current-module aliases)
- (-> Text Aliases Cursor (Lexer [Cursor Code]))
+ (-> Text Aliases Syntax)
(function (ast' where)
(do p.Monad<Parser>
[where (left-padding^ where)]
($_ p.either
- (..bit where)
- (..nat where)
- (..frac where)
- (..rev where)
- (..int where)
- (..text where)
- (..identifier current-module aliases where)
- (..tag current-module aliases where)
- (..form where ast')
- (..tuple where ast')
- (..record where ast')
+ (<| (..timed "bit")
+ (..bit where))
+ (<| (..timed "nat")
+ (..nat where))
+ (<| (..timed "frac")
+ (..frac where))
+ (<| (..timed "rev")
+ (..rev where))
+ (<| (..timed "int")
+ (..int where))
+ (<| (..timed "text")
+ (..text where))
+ (<| (..timed "identifier")
+ (..identifier current-module aliases where))
+ (<| (..timed "tag")
+ (..tag current-module aliases where))
+ (<| (..timed "form")
+ (..form ast' where))
+ (<| (..timed "tuple")
+ (..tuple ast' where))
+ (<| (..timed "record")
+ (..record ast' where))
(do @
[end? l.end?]
(if end?
diff --git a/stdlib/source/lux/data/text/lexer.lux b/stdlib/source/lux/data/text/lexer.lux
index 677810eb8..e6186aea8 100644
--- a/stdlib/source/lux/data/text/lexer.lux
+++ b/stdlib/source/lux/data/text/lexer.lux
@@ -58,7 +58,7 @@
slices lexer]
(wrap (list/fold (function (_ [slice::basis slice::distance]
[total::basis total::distance])
- [total::basis (n/+ slice::distance total::distance)])
+ [total::basis ("lux i64 +" slice::distance total::distance)])
{#basis offset
#distance 0}
slices))))
@@ -69,7 +69,7 @@
(function (_ [offset tape])
(case (//.nth offset tape)
(#.Some output)
- (#e.Success [[(inc offset) tape] (//.from-code output)])
+ (#e.Success [[("lux i64 +" 1 offset) tape] (//.from-code output)])
_
(#e.Error cannot-lex-error))))
@@ -78,7 +78,7 @@
{#.doc "Just returns the next character without applying any logic."}
(Lexer Slice)
(function (_ [offset tape])
- (#e.Success [[(inc offset) tape]
+ (#e.Success [[("lux i64 +" 1 offset) tape]
{#basis offset
#distance 1}])))
@@ -105,7 +105,8 @@
(case (//.index-of' reference offset tape)
(#.Some where)
(if (n/= offset where)
- (#e.Success [[(n/+ (//.size reference) offset) tape] []])
+ (#e.Success [[("lux i64 +" (//.size reference) offset) tape]
+ []])
(#e.Error ($_ text/compose "Could not match: " (//.encode reference) " @ " (maybe.assume (//.clip' offset tape)))))
_
@@ -117,7 +118,8 @@
(function (_ (^@ input [offset tape]))
(case (//.index-of' reference offset tape)
(^multi (#.Some where) (n/= offset where))
- (#e.Success [[(n/+ (//.size reference) offset) tape] #1])
+ (#e.Success [[("lux i64 +" (//.size reference) offset) tape]
+ #1])
_
(#e.Success [input #0]))))
@@ -203,7 +205,7 @@
(#.Some output)
(let [output (//.from-code output)]
(if (<modifier> (//.contains? output options))
- (#e.Success [[(inc offset) tape] output])
+ (#e.Success [[("lux i64 +" 1 offset) tape] output])
(#e.Error ($_ text/compose "Character (" output
") is should " <description-modifier>
"be one of: " options))))
@@ -224,7 +226,7 @@
(#.Some output)
(let [output (//.from-code output)]
(if (<modifier> (//.contains? output options))
- (#e.Success [[(inc offset) tape]
+ (#e.Success [[("lux i64 +" 1 offset) tape]
{#basis offset
#distance 1}])
(#e.Error ($_ text/compose "Character (" output
@@ -245,7 +247,7 @@
(case (//.nth offset tape)
(#.Some output)
(if (p output)
- (#e.Success [[(inc offset) tape] (//.from-code output)])
+ (#e.Success [[("lux i64 +" 1 offset) tape] (//.from-code output)])
(#e.Error ($_ text/compose "Character does not satisfy predicate: " (//.from-code output))))
_
@@ -268,7 +270,7 @@
(do p.Monad<Parser>
[[left::basis left::distance] left
[right::basis right::distance] right]
- (wrap [left::basis (n/+ left::distance right::distance)])))
+ (wrap [left::basis ("lux i64 +" left::distance right::distance)])))
(do-template [<name> <base> <doc-modifier>]
[(def: #export (<name> lexer)
@@ -344,7 +346,7 @@
(do p.Monad<Parser>
[[basis distance] lexer]
(function (_ (^@ input [offset tape]))
- (case (//.clip basis (n/+ basis distance) tape)
+ (case (//.clip basis ("lux i64 +" basis distance) tape)
(#.Some output)
(#e.Success [input output])
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 14:20:02 +0000