87 lines
2.3 KiB
Plaintext
87 lines
2.3 KiB
Plaintext
# an integrated Ludus interpreter
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(try (os/cd "janet") ([_] nil)) # for REPL
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(import /scanner :as s)
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(import /parser :as p)
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(import /validate :as v)
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(import /interpreter :as i)
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(import /errors :as e)
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(import /base :as b)
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(import spork/json :as j)
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(comment
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The API from the old Clojure Ludus interpreter returns an object with four fields:
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* `console`: an array of lines to be printed to the console
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* `result`: a string representation of the result of running the script
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* `draw`: an array of arrays that represent p5 calls, e.g. `["line", 0, 0, 100, 100]`
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* `errors`: an array of errors, which are just strings
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This new scene will have to return a JSON POJSO:
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{:console "..." :result "..." :draw [...] :errors [...]}
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)
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(def prelude-ctx @{:^parent {"base" b/base}})
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# (comment
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# (do
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(def prelude-ctx @{:^parent {"base" b/base}})
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(def prelude-src (slurp "prelude.ld"))
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(def prelude-scanned (s/scan prelude-src))
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(def prelude-parsed (p/parse prelude-scanned))
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(def parse-errors (prelude-parsed :errors))
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(when (any? parse-errors) (each err parse-errors (e/parse-error err)))
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(def prelude-validated (v/valid prelude-parsed prelude-ctx))
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(def validation-errors (prelude-validated :errors))
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(when (any? validation-errors) (each err validation-errors (e/validation-error err)))
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(def prelude-pkg (try
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(i/interpret (prelude-parsed :ast) prelude-ctx)
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([e] e)))
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(keys prelude-pkg)
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(prelude-pkg :msg)
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(e/runtime-error prelude-pkg)
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# )
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(defn run [source]
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(def errors @[])
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(def draw @[])
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(var result @"")
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(def console @"")
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(def out @{:errors errors :draw draw :result result :console console})
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(def scanned (s/scan source))
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(when (any? (scanned :errors))
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(break (do
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(each err (scanned :errors)
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(e/scan-error err)))))
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(def parsed (p/parse scanned))
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(when (any? (parsed :errors))
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(break (each err (parsed :errors)
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(e/parse-error err))))
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(def validated (v/valid parsed prelude-ctx))
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(when (any? (validated :errors))
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(break (each err (validated :errors)
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(e/validation-error err))))
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(setdyn :out console)
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(try
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(set result (b/show (i/interpret (parsed :ast) prelude-ctx)))
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([err] (setdyn :out stdout) (e/runtime-error err)))
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(setdyn :out stdout)
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(set (out :result) result)
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(j/encode out))
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(defn test [source])
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(defn run-script [filename]
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(def source (slurp filename))
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(run source))
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(def source `
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let pi = base :pi
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pi
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`)
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b/base
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(-> source run j/decode)
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