93 lines
4.3 KiB
Text
93 lines
4.3 KiB
Text
/-
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Copyright (c) 2018 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Sebastian Ullrich
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-/
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import init.lean.parser.module init.lean.expander init.lean.elaborator init.lean.util init.io
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namespace 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 mk_config (filename := "<unknown>") (input := "") : except string module_parser_config :=
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do t ← parser.mk_token_trie $
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parser.tokens module.header.parser ++
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parser.tokens command.builtin_command_parsers ++
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parser.tokens term.builtin_leading_parsers ++
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parser.tokens term.builtin_trailing_parsers,
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pure $ {
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filename := filename, input := input, tokens := t,
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file_map := file_map.from_string input,
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command_parsers := command.builtin_command_parsers,
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leading_term_parsers := term.builtin_leading_parsers,
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trailing_term_parsers := term.builtin_trailing_parsers,
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}
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def run_frontend (filename input : string) (print_msg : message → except_t string io unit) (collect_outputs : bool) :
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except_t string io (list syntax) := do
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parser_cfg ← monad_except.lift_except $ mk_config filename input,
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-- TODO(Sebastian): `parse_header` should be called directly by lean.cpp
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match parse_header parser_cfg with
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| (_, except.error msg) := print_msg msg *> pure []
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| (_, except.ok (p_snap, msgs)) := do
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msgs.to_list.mfor print_msg,
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let expander_cfg : expander_config := {transformers := builtin_transformers, ..parser_cfg},
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let elab_cfg : elaborator_config := {filename := filename, input := input, initial_parser_cfg := parser_cfg, ..parser_cfg},
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let opts := options.mk.set_bool `trace.as_messages tt,
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let elab_st := elaborator.mk_state elab_cfg opts,
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let add_output (out : syntax) outs := if collect_outputs then out::outs else [],
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io.prim.iterate_eio (p_snap, elab_st, parser_cfg, expander_cfg, ([] : list syntax)) $ λ ⟨p_snap, elab_st, parser_cfg, expander_cfg, outs⟩, do {
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let pos := parser_cfg.file_map.to_position p_snap.it.offset,
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r ← monad_lift $ profileit_pure "parsing" pos $ λ _, parse_command parser_cfg p_snap,
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match r with
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| (cmd, except.error msg) := do {
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-- fatal error (should never happen?)
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print_msg msg,
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msgs.to_list.mfor print_msg,
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pure (sum.inr (add_output cmd outs).reverse)
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}
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| (cmd, except.ok (p_snap, msgs)) := do {
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msgs.to_list.mfor print_msg,
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r ← monad_lift $ profileit_pure "expanding" pos $ λ _, (expand cmd).run expander_cfg,
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match r with
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| except.ok cmd' := do {
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--io.println cmd',
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elab_st ← monad_lift $ profileit_pure "elaborating" pos $ λ _, elaborator.process_command elab_cfg elab_st cmd',
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elab_st.messages.to_list.mfor print_msg,
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if cmd'.is_of_kind module.eoi then
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/-print_msg {filename := filename, severity := message_severity.information,
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pos := ⟨1, 0⟩,
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text := "parser cache hit rate: " ++ to_string out.cache.hit ++ "/" ++
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to_string (out.cache.hit + out.cache.miss)},-/
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pure (sum.inr (add_output cmd outs).reverse)
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else
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pure (sum.inl (p_snap, elab_st, elab_st.parser_cfg, elab_st.expander_cfg, add_output cmd outs))
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}
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| except.error e := print_msg e *> pure (sum.inl (p_snap, elab_st, parser_cfg, expander_cfg, add_output cmd outs))
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}
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}
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@[export lean_process_file]
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def process_file (f s : string) (json : bool) : io bool := do
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--let s := (s.mk_iterator.nextn 10000).prev_to_string,
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let print_msg : message → except_t string io unit := λ msg,
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if json then
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io.println $ "{\"file_name\": \"<stdin>\", \"pos_line\": " ++ to_string msg.pos.line ++
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", \"pos_col\": " ++ to_string msg.pos.column ++
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", \"severity\": " ++ repr (match msg.severity with
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| message_severity.information := "information"
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| message_severity.warning := "warning"
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| message_severity.error := "error") ++
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", \"caption\": " ++ repr msg.caption ++
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", \"text\": " ++ repr msg.text ++ "}"
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else io.println msg.to_string,
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ex ← (run_frontend f s print_msg ff).run,
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match ex with
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| except.ok _ := pure tt
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| except.error e := do
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(print_msg {filename := f, severity := message_severity.error, pos := ⟨1, 0⟩, text := e}).run,
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pure ff
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end lean
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