88 lines
3.6 KiB
EmacsLisp
88 lines
3.6 KiB
EmacsLisp
;; Copyright (c) 2013, 2014 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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;;
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;; Author: Leonardo de Moura
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;; Soonho Kong
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;;
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(require 'rx)
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(defconst lean-keywords
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'("import" "abbreviation" "opaque_hint" "tactic_hint" "definition" "renaming"
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"inline" "hiding" "exposing" "parameter" "parameters" "begin" "proof" "qed" "conjecture"
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"hypothesis" "lemma" "corollary" "variable" "variables" "print" "theorem"
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"context" "open" "axiom" "inductive" "with" "structure" "universe" "alias" "help" "environment"
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"options" "precedence" "postfix" "prefix" "calc_trans" "calc_subst" "calc_refl"
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"infix" "infixl" "infixr" "notation" "eval" "check" "exit" "coercion" "end"
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"private" "using" "namespace" "builtin" "including" "instance" "class" "section"
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"set_option" "add_rewrite" "extends")
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"lean keywords")
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(defconst lean-syntax-table
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(let ((st (make-syntax-table)))
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;; Matching parens
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(modify-syntax-entry ?\[ "(]" st)
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(modify-syntax-entry ?\] ")[" st)
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(modify-syntax-entry ?\{ "(}" st)
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(modify-syntax-entry ?\} "){" st)
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;; comment
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(modify-syntax-entry ?/ "_ 14nb" st)
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(modify-syntax-entry ?- "_ 123" st)
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(modify-syntax-entry ?\n ">" st)
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;; ' and _ can be names
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(modify-syntax-entry ?' "w" st)
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(modify-syntax-entry ?_ "w" st)
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;; Lean operator chars
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(mapc #'(lambda (ch) (modify-syntax-entry ch "_" st))
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"!#$%&*+.<=>@^|~:")
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;; Whitespace is whitespace
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(modify-syntax-entry ?\ " " st)
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(modify-syntax-entry ?\t " " st)
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;; Strings
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(modify-syntax-entry ?\" "\"" st)
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(modify-syntax-entry ?\\ "/" st)
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st))
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(defconst lean-font-lock-defaults
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`((;; Types
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(,(rx symbol-start (or "bool" "int" "nat" "real" "Prop" "Type" "ℕ" "ℤ") symbol-end) . 'font-lock-type-face)
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;; Keywords
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(,(rx symbol-start (or "calc" "have" "obtains" "show" "by" "in" "let" "forall" "fun"
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"exists" "if" "then" "else" "assume" "take" "obtain" "from") symbol-end)
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. font-lock-keyword-face)
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;; String
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("\"[^\"]*\"" . 'font-lock-string-face)
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;; Constants
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(,(rx (or "#" "@" "->" "∼" "↔" "/" "==" "=" ":=" "<->" "/\\" "\\/" "∧" "∨" "≠" "<" ">" "≤" "≥" "¬" "<=" ">=" "⁻¹" "⬝" "▸" "+" "*" "-" "/")) . 'font-lock-constant-face)
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(,(rx (or "λ" "→" "∃" "∀" ":=")) . 'font-lock-constant-face )
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;; universe/inductive/theorem... "names"
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(,(rx symbol-start
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(group (or "universe" "inductive" "theorem" "axiom" "lemma" "hypothesis"
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"abbreviation" "definition" "variable" "parameter"))
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symbol-end
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(zero-or-more (or whitespace "(" "{" "["))
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(group (zero-or-more (not whitespace))))
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(2 'font-lock-function-name-face))
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("\\(set_option\\)[ \t]*\\([^ \t\n]*\\)" (2 'font-lock-constant-face))
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;; place holder
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(,(rx symbol-start "_" symbol-end) . 'font-lock-preprocessor-face)
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;; modifiers
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(,(rx (or "\[notation\]" "\[protected\]" "\[private\]" "\[instance\]" "\[coercion\]" "\[inline\]")) . 'font-lock-doc-face)
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;; tactics
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(,(rx symbol-start
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(or "\\b.*_tac" "Cond" "or_else" "then" "try" "when" "assumption" "apply" "back" "beta" "done" "exact" "repeat")
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symbol-end)
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. 'font-lock-constant-face)
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;; sorry
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(,(rx symbol-start "sorry" symbol-end) . 'font-lock-warning-face)
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;; ? query
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(,(rx "?") . 'font-lock-warning-face)
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;; lean-keywords
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(, (concat "\\(" (regexp-opt lean-keywords 'words) "\\)")
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(1 'font-lock-keyword-face)))))
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(provide 'lean-syntax)
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