#| -*-Scheme-*- Copyright (C) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Massachusetts Institute of Technology This file is part of MIT/GNU Scheme. MIT/GNU Scheme is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. MIT/GNU Scheme is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with MIT/GNU Scheme; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |# ;;;; Major Mode for Verilog Programs (define-command verilog-mode "Enter Verilog mode." () (lambda () (set-current-major-mode! (ref-mode-object verilog)))) (define-major-mode verilog fundamental "Verilog" "Major mode specialized for editing Verilog code. \\{verilog}" (lambda (buffer) (local-set-variable! syntax-table verilog-mode:syntax-table buffer) (local-set-variable! syntax-ignore-comments-backwards #f buffer) (local-set-variable! comment-column 40 buffer) (local-set-variable! comment-locator-hook verilog-comment-locate buffer) (local-set-variable! comment-indent-hook verilog-comment-indentation buffer) (local-set-variable! comment-start "// " buffer) (local-set-variable! comment-end "" buffer) (standard-alternate-paragraph-style! buffer) (local-set-variable! indent-line-procedure (ref-command keyparser-indent-line) buffer) (local-set-variable! definition-start verilog-defun-start-regexp buffer) (local-set-variable! require-final-newline #t buffer) (local-set-variable! keyparser-description verilog-description buffer) (local-set-variable! keyword-table verilog-keyword-table buffer) (local-set-variable! local-abbrev-table (ref-variable verilog-mode-abbrev-table buffer) buffer) (event-distributor/invoke! (ref-variable verilog-mode-hook buffer) buffer))) (define verilog-mode:syntax-table (let ((syntax-table (make-char-syntax-table))) (for-each (lambda (char) (set-char-syntax! syntax-table char ".")) (string->list "+-=%<>&|")) (set-char-syntax! syntax-table #\' "_") (set-char-syntax! syntax-table #\` ". p") (set-char-syntax! syntax-table #\# ". p") (set-char-syntax! syntax-table #\@ ". p") (set-char-syntax! syntax-table #\/ ". 1456") (set-char-syntax! syntax-table #\* ". 23") (set-char-syntax! syntax-table #\newline ">") syntax-table)) (define-key 'verilog #\linefeed 'reindent-then-newline-and-indent) (define-key 'verilog #\rubout 'backward-delete-char-untabify) (define-key 'verilog #\tab 'keyparser-indent-line) (define-key 'verilog #\c-m-\\ 'keyparser-indent-region) (define-key 'verilog #\) 'lisp-insert-paren) (define-key 'verilog #\] 'lisp-insert-paren) (define-key 'verilog #\} 'lisp-insert-paren) (define-key 'verilog #\m-tab 'complete-keyword) ;;;; Syntax Description (define (verilog-comment-locate mark) (let ((state (parse-partial-sexp mark (line-end mark 0)))) (and (parse-state-in-comment? state) (verilog-comment-match-start (parse-state-comment-start state)) (cons (re-match-start 0) (re-match-end 0))))) (define (verilog-comment-match-start mark) (re-match-forward "/\\(/+\\|\\*+\\)[ \t]*" mark)) (define (verilog-comment-indentation mark) (let ((column (cond ((or (and (line-start? mark) (match-forward "/*" mark)) (match-forward "////" mark)) 0) ((match-forward "///" mark) (keyparser-compute-indentation mark #t)) (else (ref-variable comment-column mark))))) (if (within-indentation? mark) column (max (+ (mark-column (horizontal-space-start mark)) 1) column)))) (define verilog-defun-start-regexp (string-append "^" (regexp-group "module" "macromodule" "primitive" "parameter") (regexp-group "\\s " "$"))) (define verilog-keyword-table (alist->string-table (map list '("always" "and" "assign" "begin" "buf" "bufif0" "bufif1" "case" "casex" "casez" "cmos" "deassign" "default" "define" "defparam" "disable" "else" "end" "endcase" "endfunction" "endmodule" "endprimitive" "endtable" "endtask" "event" "for" "force" "forever" "fork" "function" "if" "ifdef" "include" "initial" "inout" "input" "integer" "join" "macromodule" "module" "nand" "negedge" "nmos" "nor" "not" "notif0" "notif1" "or" "output" "parameter" "pmos" "posedge" "primitive" "pulldown" "pullup" "rcmos" "real" "reg" "release" "repeat" "rnmos" "rpmos" "rtran" "rtranif0" "rtranif1" "scalared" "supply0" "supply1" "table" "task" "time" "tran" "tranif0" "tranif1" "tri" "tri0" "tri1" "triand" "trior" "trireg" "udp" "vectored" "wait" "wand" "while" "wire" "wor" "xnor" "xor")) #f)) (define (parse-forward-past-semicolon start end) (let loop ((start start) (state #f)) (let ((semi (char-search-forward #\; start end #f))) (and semi (let ((state (parse-partial-sexp start semi #f #f state))) (if (in-char-syntax-structure? state) (loop semi state) semi)))))) (define (parse-forward-past-block-tag start end) (if (re-match-forward "[ \t]*:[ \t]*" start end) (forward-one-sexp start end) start)) (define (parse-forward-noop start end) end start) (define (continued-header-indent mark) (+ (mark-indentation mark) (ref-variable verilog-continued-header-offset mark))) (define (continued-statement-indent mark) (+ (mark-indentation mark) (ref-variable verilog-continued-statement-offset mark))) (define verilog-description (make-keyparser-description 'FIND-STATEMENT-END parse-forward-past-semicolon 'INDENT-CONTINUED-STATEMENT continued-statement-indent 'INDENT-CONTINUED-COMMENT (lambda (mark) (mark-column (or (verilog-comment-match-start mark) mark))))) (define-keyparser-statement-leader #\# verilog-description (re-compile-char #\# #f) forward-one-sexp) (define-keyparser-statement-leader #\@ verilog-description (re-compile-char #\@ #f) forward-one-sexp) (define (define-standard-keyword keyword end parse-header) (define-keyparser-pattern keyword verilog-description (list (make-keyparser-fragment 'KEYWORD keyword 'PARSE-HEADER parse-header 'INDENT-HEADER continued-header-indent 'PARSE-BODY keyparse-forward 'INDENT-BODY continued-statement-indent) (and end (make-keyparser-fragment 'KEYWORD end 'PARSE-HEADER parse-forward-noop 'INDENT-HEADER continued-header-indent 'PARSE-BODY #f 'INDENT-BODY #f))))) (define-standard-keyword "always" #f parse-forward-noop) (define-standard-keyword "begin" "end" parse-forward-past-block-tag) (define-standard-keyword "case" "endcase" forward-one-sexp) (define-standard-keyword "casex" "endcase" forward-one-sexp) (define-standard-keyword "casez" "endcase" forward-one-sexp) (define-standard-keyword "else" #f parse-forward-noop) (define-standard-keyword "for" #f forward-one-sexp) (define-standard-keyword "forever" #f parse-forward-noop) (define-standard-keyword "fork" "join" parse-forward-past-block-tag) (define-standard-keyword "function" "endfunction" parse-forward-past-semicolon) (define-standard-keyword "if" #f forward-one-sexp) (define-standard-keyword "initial" #f parse-forward-noop) (define-standard-keyword "macromodule" "endmodule" parse-forward-past-semicolon) (define-standard-keyword "module" "endmodule" parse-forward-past-semicolon) (define-standard-keyword "primitive" "endprimitive" parse-forward-past-semicolon) (define-standard-keyword "repeat" #f forward-one-sexp) (define-standard-keyword "table" "endtable" parse-forward-noop) (define-standard-keyword "task" "endtask" parse-forward-past-semicolon) (define-standard-keyword "while" #f forward-one-sexp)