branch: elpa/julia-mode
commit 11e3904af277157166ff62552e76ae4aa31c50b2
Author: Wilfred Hughes <m...@wilfred.me.uk>
Commit: Yichao Yu <yyc1...@gmail.com>
Backporting regexp-opt functionality to Emacs 23.
See https://github.com/JuliaLang/julia/issues/8537
---
julia-mode.el | 57 +++++++++++++++++++++++++++++++++++----------------------
1 file changed, 35 insertions(+), 22 deletions(-)
diff --git a/julia-mode.el b/julia-mode.el
index a41aba7..d67b028 100644
--- a/julia-mode.el
+++ b/julia-mode.el
@@ -47,6 +47,19 @@
(when (not (fboundp 'ignore-errors))
(defmacro ignore-errors (body) `(condition-case nil ,body (error nil))))
+(defun julia--regexp-opt (strings &optional paren)
+ "Emacs 23 provides `regexp-opt', but it does not support PAREN taking the
value 'symbols.
+This function provides equivalent functionality, but makes no efforts to
optimise the regexp."
+ (cond
+ ((>= emacs-major-version 24)
+ (regexp-opt strings paren))
+ ((not (eq paren 'symbols))
+ (regexp-opt strings paren))
+ ((null strings)
+ "")
+ ('t
+ (rx-to-string `(seq symbol-start (or ,@strings) symbol-end)))))
+
(defvar julia-mode-syntax-table
(let ((table (make-syntax-table)))
(modify-syntax-entry ?_ "_" table)
@@ -140,7 +153,7 @@
(rx symbol-start (group "@" (1+ (or word (syntax symbol))))))
(defconst julia-keyword-regex
- (regexp-opt
+ (julia--regexp-opt
'("if" "else" "elseif" "while" "for" "begin" "end" "quote"
"try" "catch" "return" "local" "abstract" "function" "macro" "ccall"
"finally" "typealias" "break" "continue" "type" "global"
@@ -149,13 +162,13 @@
'symbols))
(defconst julia-builtin-regex
- (regexp-opt
+ (julia--regexp-opt
;;'("error" "throw")
'()
'symbols))
(defconst julia-builtin-types-regex
- (regexp-opt
+ (julia--regexp-opt
'("Number" "Real" "BigInt" "Integer"
"Uint" "Uint8" "Uint16" "Uint32" "Uint64" "Uint128"
"Int" "Int8" "Int16" "Int32" "Int64" "Int128"
@@ -171,25 +184,25 @@
(defconst julia-font-lock-keywords
(list
- (cons julia-builtin-types-regex 'font-lock-type-face)
- (cons julia-keyword-regex 'font-lock-keyword-face)
- (cons julia-macro-regex 'font-lock-keyword-face)
- (cons
- (regexp-opt
- '("true" "false" "C_NULL" "Inf" "NaN" "Inf32" "NaN32" "nothing")
- 'symbols)
- 'font-lock-constant-face)
- (list julia-unquote-regex 2 'font-lock-constant-face)
- (list julia-char-regex 2 'font-lock-string-face)
- (list julia-forloop-in-regex 1 'font-lock-keyword-face)
- (list julia-function-regex 1 'font-lock-function-name-face)
- (list julia-function-assignment-regex 1 'font-lock-function-name-face)
- (list julia-type-regex 1 'font-lock-type-face)
- (list julia-type-annotation-regex 1 'font-lock-type-face)
- ;;(list julia-type-parameter-regex 1 'font-lock-type-face)
- (list julia-subtype-regex 1 'font-lock-type-face)
- (list julia-builtin-regex 1 'font-lock-builtin-face)
-))
+ (cons julia-builtin-types-regex 'font-lock-type-face)
+ (cons julia-keyword-regex 'font-lock-keyword-face)
+ (cons julia-macro-regex 'font-lock-keyword-face)
+ (cons
+ (julia--regexp-opt
+ '("true" "false" "C_NULL" "Inf" "NaN" "Inf32" "NaN32" "nothing")
+ 'symbols)
+ 'font-lock-constant-face)
+ (list julia-unquote-regex 2 'font-lock-constant-face)
+ (list julia-char-regex 2 'font-lock-string-face)
+ (list julia-forloop-in-regex 1 'font-lock-keyword-face)
+ (list julia-function-regex 1 'font-lock-function-name-face)
+ (list julia-function-assignment-regex 1 'font-lock-function-name-face)
+ (list julia-type-regex 1 'font-lock-type-face)
+ (list julia-type-annotation-regex 1 'font-lock-type-face)
+ ;;(list julia-type-parameter-regex 1 'font-lock-type-face)
+ (list julia-subtype-regex 1 'font-lock-type-face)
+ (list julia-builtin-regex 1 'font-lock-builtin-face)
+ ))
(defconst julia-block-start-keywords
(list "if" "while" "for" "begin" "try" "function" "type" "let" "macro"
