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Copypasta splat patterns to dict, struct, tuple in parser

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Scott Richmond 2022-06-19 14:52:38 -04:00
parent 68bc37ef61
commit 4e7590226b
1 changed files with 34 additions and 12 deletions
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46
src/ludus/parser.clj
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@ -522,7 +522,7 @@
:token (current origin)
:length (count ms)
:members ms})
(panic parser "A splat my only appear once in a pattern, at the end of a pattern.")))
(panic parser "A splat my only appear once in a list pattern, at the end of the pattern.")))
(::token/comma ::token/newline)
(recur
@ -548,11 +548,15 @@
current_member nil]
(let [curr (current parser)]
(case (token-type parser)
::token/rbrace (let [ms (add-member members current_member)]
(assoc (advance parser) ::ast
{::ast/type ::ast/dict
:token (current origin)
:members ms}))
::token/rbrace
(let [ms (add-member members current_member)]
(if (not-any? #(= (::ast/type %) ::ast/splat) (drop-last ms))
(assoc (advance parser) ::ast
{::ast/type ::ast/tuple
:token (current origin)
:length (count ms)
:members ms})
(panic parser "A splat my only appear once in a dict pattern, at the end of the pattern.")))
(::token/comma ::token/newline)
(recur
@ -565,6 +569,10 @@
::token/eof
(panic (assoc origin ::errors (::errors parser)) "Unterminated dict pattern" ::token/eof)
::token/splat
(let [splatted (parse-splat-pattern parser)]
(recur splatted members (::ast splatted)))
::token/word
(if (not current_member)
(let [parsed (parse-word parser) word (get-in parsed [::ast :word])]
@ -585,11 +593,15 @@
current_member nil]
(let [curr (current parser)]
(case (token-type parser)
::token/rbrace (let [ms (add-member members current_member)]
(assoc (advance parser) ::ast
{::ast/type ::ast/struct
:token (current origin)
:members ms}))
::token/rbrace
(let [ms (add-member members current_member)]
(if (not-any? #(= (::ast/type %) ::ast/splat) (drop-last ms))
(assoc (advance parser) ::ast
{::ast/type ::ast/tuple
:token (current origin)
:length (count ms)
:members ms})
(panic parser "A splat my only appear once in a struct pattern, at the end of the pattern.")))
(::token/comma ::token/newline)
(recur
@ -602,6 +614,10 @@
::token/eof
(panic (assoc origin ::errors (::errors parser)) "Unterminated struct pattern" ::token/eof)
::token/splat
(let [splatted (parse-splat-pattern parser)]
(recur splatted members (::ast splatted)))
::token/word
(if (not current_member)
(let [parsed (parse-word parser) word (get-in parsed [::ast :word])]
@ -625,11 +641,13 @@
(case (token-type parser)
::token/rparen
(let [ms (add-member members current_member)]
(if (not-any? #(= (::ast/type %) ::ast/splat) (drop-last ms))
(assoc (advance parser) ::ast
{::ast/type ::ast/tuple
:token (current origin)
:length (count ms)
:members ms}))
:members ms})
(panic parser "A splat my only appear once in a tuple pattern, at the end of the pattern.")))
(::token/comma ::token/newline)
@ -643,6 +661,10 @@
::token/eof
(panic (assoc origin ::errors (::errors parser)) "Unterminated tuple" ::token/eof)
::token/splat
(let [splatted (parse-splat-pattern parser)]
(recur splatted members (::ast splatted)))
(let [parsed (parse-pattern parser)]
(recur parsed members (::ast parsed)))))))