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|
(.using
[library
[lux (.full)
[control
[monad (.only Monad do)]
["[0]" try (.only Try)]
["ex" exception (.only exception:)]]
[data
["[0]" text ("[1]#[0]" equivalence)
["%" format (.only format)]]]
[type (.only sharing)
["[0]" check]]
[compiler
["[0]" phase
["[0]" analysis
["[0]" module]
["[0]" type]]
["[0]" generation]
["[0]" directive (.only State+ Operation)
["[0]" total]]
["[0]" extension]]
["[0]" default
["[0]" syntax]
["[0]" platform (.only Platform)]
["[0]" init]]
["[0]" cli (.only Configuration)]]
[world
["[0]" file (.only File)]
["[0]" console (.only Console)]]]]
["[0]" /type])
(exception: .public (error [message Text])
message)
(def: .public module "<INTERPRETER>")
(def: fresh_source
Source
[[..module 1 0] 0 ""])
(def: (add_line line [where offset input])
(-> Text Source Source)
[where offset (format input text.new_line line)])
(def: exit_command
Text
"exit")
(def: welcome_message
Text
(format text.new_line
"Welcome to the interpreter!" text.new_line
"Type '" ..exit_command "' to leave." text.new_line
text.new_line))
(def: farewell_message
Text
"Till next time...")
(def: enter_module
(All (_ anchor expression directive)
(Operation anchor expression directive Any))
(directive.lifted_analysis
(do phase.monad
[_ (module.create 0 ..module)]
(analysis.set_current_module ..module))))
(def: (initialize Monad<!> Console<!> platform configuration generation_bundle)
(All (_ ! anchor expression directive)
(-> (Monad !)
(Console !) (Platform ! anchor expression directive)
Configuration
(generation.Bundle anchor expression directive)
(! (State+ anchor expression directive))))
(do Monad<!>
[state (platform.initialize platform generation_bundle)
state (platform.compile platform
(has cli.#module syntax.prelude configuration)
(has [extension.#state
directive.#analysis directive.#state
extension.#state
.#info .#mode]
{.#Interpreter}
state))
[state _] (# (the platform.#file_system platform)
lift (phase.result' state enter_module))
_ (# Console<!> write ..welcome_message)]
(in state)))
(with_expansions [<Interpretation> (these (Operation anchor expression directive [Type Any]))]
(def: (interpret_directive code)
(All (_ anchor expression directive)
(-> Code <Interpretation>))
(do phase.monad
[_ (total.phase code)
_ init.refresh]
(in [Any []])))
(def: (interpret_expression code)
(All (_ anchor expression directive)
(-> Code <Interpretation>))
(do [! phase.monad]
[state (extension.lifted phase.state)
.let [analyse (the [directive.#analysis directive.#phase] state)
synthesize (the [directive.#synthesis directive.#phase] state)
generate (the [directive.#generation directive.#phase] state)]
[_ codeT codeA] (directive.lifted_analysis
(analysis.with_scope
(type.with_fresh_env
(do !
[[codeT codeA] (type.with_inference
(analyse code))
codeT (type.with_env
(check.clean codeT))]
(in [codeT codeA])))))
codeS (directive.lifted_synthesis
(synthesize codeA))]
(directive.lifted_generation
(generation.with_buffer
(do !
[codeH (generate codeS)
count generation.next
codeV (generation.evaluate! (format "interpretation_" (%.nat count)) codeH)]
(in [codeT codeV]))))))
(def: (interpret configuration code)
(All (_ anchor expression directive)
(-> Configuration Code <Interpretation>))
(function (_ state)
(case (<| (phase.result' state)
(sharing [anchor expression directive]
(State+ anchor expression directive)
state
<Interpretation>
(interpret_directive code)))
{try.#Success [state' output]}
{try.#Success [state' output]}
{try.#Failure error}
(if (ex.match? total.not_a_directive error)
(<| (phase.result' state)
(sharing [anchor expression directive]
(State+ anchor expression directive)
state
<Interpretation>
(interpret_expression code)))
{try.#Failure error}))))
)
(def: (execute configuration code)
(All (_ anchor expression directive)
(-> Configuration Code (Operation anchor expression directive Text)))
(do phase.monad
[[codeT codeV] (interpret configuration code)
state phase.state]
(in (/type.represent (the [extension.#state
directive.#analysis directive.#state
extension.#state]
state)
codeT
codeV))))
(type: (Context anchor expression directive)
(Record
[#configuration Configuration
#state (State+ anchor expression directive)
#source Source]))
(with_expansions [<Context> (these (Context anchor expression directive))]
(def: (read_eval_print context)
(All (_ anchor expression directive)
(-> <Context> (Try [<Context> Text])))
(do try.monad
[.let [[_where _offset _code] (the #source context)]
[source' input] (syntax.parse ..module syntax.no_aliases (text.size _code) (the #source context))
[state' representation] (let [... TODO: Simplify ASAP
state (sharing [anchor expression directive]
<Context>
context
(State+ anchor expression directive)
(the #state context))]
(<| (phase.result' state)
... TODO: Simplify ASAP
(sharing [anchor expression directive]
<Context>
context
(Operation anchor expression directive Text)
(execute (the #configuration context) input))))]
(in [(|> context
(has #state state')
(has #source source'))
representation]))))
(def: .public (run! Monad<!> Console<!> platform configuration generation_bundle)
(All (_ ! anchor expression directive)
(-> (Monad !)
(Console !) (Platform ! anchor expression directive)
Configuration
(generation.Bundle anchor expression directive)
(! Any)))
(do [! Monad<!>]
[state (initialize Monad<!> Console<!> platform configuration)]
(loop (again [context [#configuration configuration
#state state
#source ..fresh_source]
multi_line? #0])
(do !
[_ (if multi_line?
(# Console<!> write " ")
(# Console<!> write "> "))
line (# Console<!> read_line)]
(if (and (not multi_line?)
(text#= ..exit_command line))
(# Console<!> write ..farewell_message)
(case (read_eval_print (revised #source (add_line line) context))
{try.#Success [context' representation]}
(do !
[_ (# Console<!> write representation)]
(again context' #0))
{try.#Failure error}
(if (ex.match? syntax.end_of_file error)
(again context #1)
(exec (log! (ex.error ..error error))
(again (has #source ..fresh_source context) #0))))))
)))
|
