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lean-syntax.el
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lean-syntax.el
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;; Copyright (c) 2013, 2014 Microsoft Corporation. All rights reserved.
;; Released under Apache 2.0 license as described in the file LICENSE.
;;
;; Author: Leonardo de Moura
;; Soonho Kong
;;
(require 'dash)
(require 'rx)
(defconst lean-keywords1
'("import" "prelude" "protected" "private" "noncomputable" "definition" "meta" "renaming"
"hiding" "exposing" "parameter" "parameters" "begin" "constant" "constants"
"lemma" "variable" "variables" "theorem" "example" "abbreviation"
"open" "export" "axiom" "axioms" "inductive" "coinductive" "with" "without"
"structure" "universe" "universes" "hide"
"precedence" "reserve" "declare_trace" "add_key_equivalence"
"match" "infix" "infixl" "infixr" "notation" "postfix" "prefix" "instance"
"end" "this" "using" "using_well_founded" "namespace" "section"
"attribute" "local" "set_option" "extends" "include" "omit" "classes" "class"
"attributes" "raw" "replacing"
"calc" "have" "show" "suffices" "by" "in" "at" "do" "let" "forall" "Pi" "fun"
"exists" "if" "then" "else" "assume" "from"
"mutual" "def" "run_cmd")
"lean keywords ending with 'word' (not symbol)")
(defconst lean-keywords1-regexp
(eval `(rx word-start (or ,@lean-keywords1) word-end)))
(defconst lean-constants
'("#" "@" "!" "$" "->" "∼" "↔" "/" "==" "=" ":=" "<->" "/\\" "\\/" "∧" "∨"
"≠" "<" ">" "≤" "≥" "¬" "<=" ">=" "⁻¹" "⬝" "▸" "+" "*" "-" "/" "λ"
"→" "∃" "∀" "∘" "×" "Σ" "Π" "~" "||" "&&" "≃" "≡" "≅"
"ℕ" "ℤ" "ℚ" "ℝ" "ℂ" "𝔸"
"⬝e" "⬝i" "⬝o" "⬝op" "⬝po" "⬝h" "⬝v" "⬝hp" "⬝vp" "⬝ph" "⬝pv" "⬝r" "◾" "◾o"
"∘n" "∘f" "∘fi" "∘nf" "∘fn" "∘n1f" "∘1nf" "∘f1n" "∘fn1"
"^c" "≃c" "≅c" "×c" "×f" "×n" "+c" "+f" "+n" "ℕ₋₂")
"lean constants")
(defconst lean-constants-regexp (regexp-opt lean-constants))
(defconst lean-numerals-regexp
(eval `(rx word-start
(one-or-more digit) (optional (and "." (zero-or-more digit)))
word-end)))
(defconst lean-warnings '("sorry" "exit") "lean warnings")
(defconst lean-warnings-regexp
(eval `(rx word-start (or ,@lean-warnings) word-end)))
(defconst lean-syntax-table
(let ((st (make-syntax-table)))
;; Matching parens
(modify-syntax-entry ?\[ "(]" st)
(modify-syntax-entry ?\] ")[" st)
(modify-syntax-entry ?\{ "(}" st)
(modify-syntax-entry ?\} "){" st)
;; comment
(modify-syntax-entry ?/ ". 14nb" st)
(modify-syntax-entry ?- ". 123" st)
(modify-syntax-entry ?\n ">" st)
(modify-syntax-entry ?« "<" st)
(modify-syntax-entry ?» ">" st)
;; Word constituent
(--map (modify-syntax-entry it "w" st)
(list ?a ?b ?c ?d ?e ?f ?g ?h ?i ?j ?k ?l ?m
?n ?o ?p ?q ?r ?s ?t ?u ?v ?w ?x ?y ?z
?A ?B ?C ?D ?E ?F ?G ?H ?I ?J ?K ?L ?M
?N ?O ?P ?Q ?R ?S ?T ?U ?V ?W ?X ?Y ?Z))
(--map (modify-syntax-entry it "w" st)
(list ?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9))
(--map (modify-syntax-entry it "w" st)
(list ?α ?β ?γ ?δ ?ε ?ζ ?η ?θ ?ι ?κ ;;?λ
?μ ?ν ?ξ ?ο ?π ?ρ ?ς ?σ ?τ ?υ
?φ ?χ ?ψ ?ω))
(--map (modify-syntax-entry it "w" st)
(list ?ϊ ?ϋ ?ό ?ύ ?ώ ?Ϗ ?ϐ ?ϑ ?ϒ ?ϓ ?ϔ ?ϕ ?ϖ
?ϗ ?Ϙ ?ϙ ?Ϛ ?ϛ ?Ϝ ?ϝ ?Ϟ ?ϟ ?Ϡ ?ϡ ?Ϣ ?ϣ
?Ϥ ?ϥ ?Ϧ ?ϧ ?Ϩ ?ϩ ?Ϫ ?ϫ ?Ϭ ?ϭ ?Ϯ ?ϯ ?ϰ
?ϱ ?ϲ ?ϳ ?ϴ ?ϵ ?϶ ?Ϸ ?ϸ ?Ϲ ?Ϻ ?ϻ))
(--map (modify-syntax-entry it "w" st)
(list ?ἀ ?ἁ ?ἂ ?ἃ ?ἄ ?ἅ ?ἆ ?ἇ ?Ἀ ?Ἁ ?Ἂ ?Ἃ ?Ἄ
?Ἅ ?Ἆ ?Ἇ ?ἐ ?ἑ ?ἒ ?ἓ ?ἔ ?ἕ ? ? ?Ἐ ?Ἑ
?Ἒ ?Ἓ ?Ἔ ?Ἕ ? ? ?ἠ ?ἡ ?ἢ ?ἣ ?ἤ ?ἥ
?ἦ ?ἧ ?Ἠ ?Ἡ ?Ἢ ?Ἣ ?Ἤ ?Ἥ ?Ἦ ?Ἧ ?ἰ ?ἱ
?ἲ ?ἳ ?ἴ ?ἵ ?ἶ ?ἷ ?Ἰ ?Ἱ ?Ἲ ?Ἳ ?Ἴ ?Ἵ ?Ἶ ?Ἷ
?ὀ ?ὁ ?ὂ ?ὃ ?ὄ ?ὅ ? ? ?Ὀ ?Ὁ ?Ὂ ?Ὃ
?Ὄ ?Ὅ ? ? ?ὐ ?ὑ ?ὒ ?ὓ ?ὔ ?ὕ ?ὖ ?ὗ
? ?Ὑ ? ?Ὓ ? ?Ὕ ? ?Ὗ ?ὠ ?ὡ ?ὢ
?ὣ ?ὤ ?ὥ ?ὦ ?ὧ ?Ὠ ?Ὡ ?Ὢ ?Ὣ ?Ὤ ?Ὥ ?Ὦ
?Ὧ ?ὰ ?ά ?ὲ ?έ ?ὴ ?ή ?ὶ ?ί ?ὸ ?ό ?ὺ ?ύ ?ὼ
?ώ ? ? ?ᾀ ?ᾁ ?ᾂ ?ᾃ ?ᾄ ?ᾅ ?ᾆ ?ᾇ ?ᾈ
?ᾉ ?ᾊ ?ᾋ ?ᾌ ?ᾍ ?ᾎ ?ᾏ ?ᾐ ?ᾑ ?ᾒ ?ᾓ ?ᾔ
?ᾕ ?ᾖ ?ᾗ ?ᾘ ?ᾙ ?ᾚ ?ᾛ ?ᾜ ?ᾝ ?ᾞ ?ᾟ ?ᾠ ?ᾡ ?ᾢ
?ᾣ ?ᾤ ?ᾥ ?ᾦ ?ᾧ ?ᾨ ?ᾩ ?ᾪ ?ᾫ ?ᾬ ?ᾭ ?ᾮ ?ᾯ ?ᾰ
?ᾱ ?ᾲ ?ᾳ ?ᾴ ? ?ᾶ ?ᾷ ?Ᾰ ?Ᾱ ?Ὰ ?Ά ?ᾼ ?᾽
?ι ?᾿ ?῀ ?῁ ?ῂ ?ῃ ?ῄ ? ?ῆ ?ῇ ?Ὲ ?Έ ?Ὴ
?Ή ?ῌ ?῍ ?῎ ?῏ ?ῐ ?ῑ ?ῒ ?ΐ ? ? ?ῖ ?ῗ
?Ῐ ?Ῑ ?Ὶ ?Ί ? ?῝ ?῞ ?῟ ?ῠ ?ῡ ?ῢ ?ΰ ?ῤ ?ῥ
?ῦ ?ῧ ?Ῠ ?Ῡ ?Ὺ ?Ύ ?Ῥ ?῭ ?΅ ?` ? ? ?ῲ ?ῳ
?ῴ ? ?ῶ ?ῷ ?Ὸ ?Ό ?Ὼ ?Ώ ?ῼ ?´ ?῾))
(--map (modify-syntax-entry it "w" st)
(list ?℀ ?℁ ?ℂ ?℃ ?℄ ?℅ ?℆ ?ℇ ?℈ ?℉ ?ℊ ?ℋ ?ℌ ?ℍ ?ℎ
?ℏ ?ℐ ?ℑ ?ℒ ?ℓ ?℔ ?ℕ ?№ ?℗ ?℘ ?ℙ ?ℚ ?ℛ ?ℜ ?ℝ
?℞ ?℟ ?℠ ?℡ ?™ ?℣ ?ℤ ?℥ ?Ω ?℧ ?ℨ ?℩ ?K ?Å ?ℬ
?ℭ ?℮ ?ℯ ?ℰ ?ℱ ?Ⅎ ?ℳ ?ℴ ?ℵ ?ℶ ?ℷ ?ℸ ?ℹ ?℺ ?℻
?ℼ ?ℽ ?ℾ ?ℿ ?⅀ ?⅁ ?⅂ ?⅃ ?⅄ ?ⅅ ?ⅆ ?ⅇ ?ⅈ ?ⅉ ?⅊
?⅋ ?⅌ ?⅍ ?ⅎ ?⅏))
(modify-syntax-entry ?' "w" st)
(modify-syntax-entry ?_ "w" st)
(modify-syntax-entry ?\. "w" st)
;; Lean operator chars
(mapc #'(lambda (ch) (modify-syntax-entry ch "_" st))
"!#$%&*+<=>@^|~:")
;; Whitespace is whitespace
(modify-syntax-entry ?\ " " st)
(modify-syntax-entry ?\t " " st)
;; Strings
(modify-syntax-entry ?\" "\"" st)
(modify-syntax-entry ?\\ "/" st)
st))
(defconst lean-font-lock-defaults
`((;; attributes
(,(rx word-start "attribute" word-end (zero-or-more whitespace) (group (one-or-more "[" (zero-or-more (not (any "]"))) "]" (zero-or-more whitespace))))
(1 'font-lock-doc-face))
(,(rx (group "@[" (zero-or-more (not (any "]"))) "]"))
(1 'font-lock-doc-face))
(,(rx (group "#" (or "eval" "print" "reduce" "help" "check")))
(1 'font-lock-keyword-face))
;; mutual definitions "names"
(,(rx word-start
"mutual"
word-end
(zero-or-more whitespace)
word-start
(or "inductive" "definition" "def")
word-end
(group (zero-or-more (not (any " \t\n\r{([,"))) (zero-or-more (zero-or-more whitespace) "," (zero-or-more whitespace) (not (any " \t\n\r{([,")))))
(1 'font-lock-function-name-face))
;; declarations
(,(rx word-start
(group (or "inductive" (group "class" (zero-or-more whitespace) "inductive") "instance" "structure" "class" "theorem" "axiom" "axioms" "lemma" "definition" "def" "constant"))
word-end (zero-or-more whitespace)
(group (zero-or-more "{" (zero-or-more (not (any "}"))) "}" (zero-or-more whitespace)))
(zero-or-more whitespace)
(group (zero-or-more (not (any " \t\n\r{([")))))
(4 'font-lock-function-name-face))
;; Constants which have a keyword as subterm
(,(rx (or "∘if")) . 'font-lock-constant-face)
;; Keywords
("\\(set_option\\)[ \t]*\\([^ \t\n]*\\)" (2 'font-lock-constant-face))
(,lean-keywords1-regexp . 'font-lock-keyword-face)
(,(rx word-start (group "example") ".") (1 'font-lock-keyword-face))
(,(rx (or "∎")) . 'font-lock-keyword-face)
;; Types
(,(rx word-start (or "Prop" "Type" "Type*" "Sort" "Sort*") symbol-end) . 'font-lock-type-face)
(,(rx word-start (group (or "Prop" "Type" "Sort")) ".") (1 'font-lock-type-face))
;; String
("\"[^\"]*\"" . 'font-lock-string-face)
;; ;; Constants
(,lean-constants-regexp . 'font-lock-constant-face)
(,lean-numerals-regexp . 'font-lock-constant-face)
;; place holder
(,(rx symbol-start "_" symbol-end) . 'font-lock-preprocessor-face)
;; warnings
(,lean-warnings-regexp . 'font-lock-warning-face)
;; escaped identifiers
(,(rx (and (group "«") (group (one-or-more (not (any "»")))) (group "»")))
(1 font-lock-comment-face t)
(2 nil t)
(3 font-lock-comment-face t))
)))
;; Syntax Highlighting for Lean Info Mode
(defconst lean-info-font-lock-defaults
(let ((new-entries
`(;; Please add more after this:
(,(rx (group (+ symbol-start (+ (or word (char ?₁ ?₂ ?₃ ?₄ ?₅ ?₆ ?₇ ?₈ ?₉ ?₀))) symbol-end (* white))) ":")
(1 'font-lock-variable-name-face))
(,(rx white ":" white)
. 'font-lock-keyword-face)
(,(rx "⊢" white)
. 'font-lock-keyword-face)
(,(rx "[" (group "stale") "]")
(1 'font-lock-warning-face))
(,(rx line-start "No Goal" line-end)
. 'font-lock-constant-face)))
(inherited-entries (car lean-font-lock-defaults)))
`(,(-concat new-entries inherited-entries))))
(provide 'lean-syntax)