85 lines
2.5 KiB
Text
85 lines
2.5 KiB
Text
import init.lean.frontend init.io
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open lean
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open lean.parser
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open lean.expander
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open lean.elaborator
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def check_reprint (p : list module_parser_output) (s : string) : except_t string io unit :=
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do let stx := syntax.list $ p.map (λ o, o.cmd),
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let stx := stx.update_leading s,
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some s' ← pure $ stx.reprint | io.println "reprint fail: choice node",
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when (s ≠ s') (
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io.println "reprint fail:" *>
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io.println s'
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)
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def show_result (p : list module_parser_output) (s : string) : except_t string io unit :=
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let stx := syntax.list $ p.map (λ r, r.cmd) in
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let stx := stx.update_leading s in
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let msgs := (do r ← p, r.messages.to_list) in
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match msgs with
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| [] := do
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io.println "result:",
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io.println (to_string stx)
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| msgs := do
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msgs.mfor $ λ e, io.println e.to_string,
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io.println "partial syntax tree:",
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io.println (to_string stx)
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def parse_module (s : string) : except string (list module_parser_output) :=
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do cfg ← mk_config,
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(outputs, sum.inl (), ⟨[]⟩) ← pure $ coroutine.finish (λ_, cfg)
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(parser.run cfg s (λ st _, module.parser.run st)) cfg
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| except.error "final parser output should be empty!",
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pure outputs
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def show_parse (s : string) : except_t string io unit :=
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do r ← monad_except.lift_except $ parse_module s,
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check_reprint r s,
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show_result r s
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#eval show_parse "prelude"
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#eval show_parse "import me"
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#eval show_parse "importme"
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#eval show_parse "import"
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#eval show_parse "prelude
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import ..a b
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import c"
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#eval show_parse "open me you"
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#eval show_parse "open me as you (a b c) (renaming a->b c->d) (hiding a b)"
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#eval show_parse "open me you."
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#eval show_parse "open open"
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#eval show_parse "open me import open you"
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#eval show_parse "open a
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section b
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open c
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section d
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open e
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end d
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end b"
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-- should not be a parser error
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#eval show_parse "section a end"
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universes u v
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#check Type max u v -- eh
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-- parsed as `Type (max) (u) (v)`, will fail on elaboration ("max: must have at least two arguments", "function expected at 'Type'", "unknown identifier 'u'/'v'")
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#eval show_parse "#check Type max u v"
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#eval do
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[header, nota, eoi] ← parse_module "infixl `+`:65 := nat.add" | throw "huh",
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except.ok cmd' ← pure $ (expand nota.cmd).run {filename := "foo", input := "", transformers := builtin_transformers} | throw "heh",
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pure cmd'.reprint
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#exit
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-- slowly progressing...
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set_option profiler true
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#eval do
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s ← io.fs.read_file "../../library/init/core.lean",
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--let s := (s.mk_iterator.nextn 10000).prev_to_string,
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run_frontend s (io.println ∘ message.to_string),
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pure ()
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