From bc5e6269693ad400c17d5dcd21d60d5f03149ab9 Mon Sep 17 00:00:00 2001 From: David Thompson Date: Sat, 17 Oct 2015 23:11:39 -0400 Subject: First commit! --- .gitignore | 10 +++ COPYING | 165 ++++++++++++++++++++++++++++++++++++ Makefile.am | 49 +++++++++++ README | 66 +++++++++++++++ bootstrap | 3 + configure.ac | 14 +++ guix.scm | 59 +++++++++++++ pre-inst-env.in | 30 +++++++ syntax-highlight.scm | 67 +++++++++++++++ syntax-highlight/parsers.scm | 198 +++++++++++++++++++++++++++++++++++++++++++ syntax-highlight/scheme.scm | 102 ++++++++++++++++++++++ 11 files changed, 763 insertions(+) create mode 100644 .gitignore create mode 100644 COPYING create mode 100644 Makefile.am create mode 100644 README create mode 100755 bootstrap create mode 100644 configure.ac create mode 100644 guix.scm create mode 100644 pre-inst-env.in create mode 100644 syntax-highlight.scm create mode 100644 syntax-highlight/parsers.scm create mode 100644 syntax-highlight/scheme.scm diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..9148070 --- /dev/null +++ b/.gitignore @@ -0,0 +1,10 @@ +*.go +/Makefile +/Makefile.in +/aclocal.m4 +/autom4te.cache/ +/build-aux/ +/config.log +/config.status +/configure +/pre-inst-env diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..cca7fc2 --- /dev/null +++ b/COPYING @@ -0,0 +1,165 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + + This version of the GNU Lesser General Public License incorporates +the terms and conditions of version 3 of the GNU General Public +License, supplemented by the additional permissions listed below. + + 0. Additional Definitions. + + As used herein, "this License" refers to version 3 of the GNU Lesser +General Public License, and the "GNU GPL" refers to version 3 of the GNU +General Public License. + + "The Library" refers to a covered work governed by this License, +other than an Application or a Combined Work as defined below. + + An "Application" is any work that makes use of an interface provided +by the Library, but which is not otherwise based on the Library. +Defining a subclass of a class defined by the Library is deemed a mode +of using an interface provided by the Library. + + A "Combined Work" is a work produced by combining or linking an +Application with the Library. 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Combined Libraries. + + You may place library facilities that are a work based on the +Library side by side in a single library together with other library +facilities that are not Applications and are not covered by this +License, and convey such a combined library under terms of your +choice, if you do both of the following: + + a) Accompany the combined library with a copy of the same work based + on the Library, uncombined with any other library facilities, + conveyed under the terms of this License. + + b) Give prominent notice with the combined library that part of it + is a work based on the Library, and explaining where to find the + accompanying uncombined form of the same work. + + 6. Revised Versions of the GNU Lesser General Public License. + + The Free Software Foundation may publish revised and/or new versions +of the GNU Lesser General Public License from time to time. Such new +versions will be similar in spirit to the present version, but may +differ in detail to address new problems or concerns. + + Each version is given a distinguishing version number. If the +Library as you received it specifies that a certain numbered version +of the GNU Lesser General Public License "or any later version" +applies to it, you have the option of following the terms and +conditions either of that published version or of any later version +published by the Free Software Foundation. If the Library as you +received it does not specify a version number of the GNU Lesser +General Public License, you may choose any version of the GNU Lesser +General Public License ever published by the Free Software Foundation. + + If the Library as you received it specifies that a proxy can decide +whether future versions of the GNU Lesser General Public License shall +apply, that proxy's public statement of acceptance of any version is +permanent authorization for you to choose that version for the +Library. diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..ac99bef --- /dev/null +++ b/Makefile.am @@ -0,0 +1,49 @@ +# guile-syntax-highlight --- General-purpose syntax highlighter +# Copyright © 2015 David Thompson +# +# Guile-syntax-highlight is free software; you can redistribute it +# and/or modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 3 of the License, or (at your option) any later version. +# +# Guile-syntax-highlight 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 Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with guile-syntax-highlight. If not, see +# . + +GOBJECTS = $(SOURCES:%.scm=%.go) + +nobase_mod_DATA = $(SOURCES) $(NOCOMP_SOURCES) +nobase_go_DATA = $(GOBJECTS) + +# Make sure source files are installed first, so that the mtime of +# installed compiled files is greater than that of installed source +# files. See +# +# for details. +guile_install_go_files = install-nobase_goDATA +$(guile_install_go_files): install-nobase_modDATA + +CLEANFILES = $(GOBJECTS) +EXTRA_DIST = $(SOURCES) $(NOCOMP_SOURCES) +GUILE_WARNINGS = -Wunbound-variable -Warity-mismatch -Wformat +SUFFIXES = .scm .go +.scm.go: + $(AM_V_GEN)$(top_builddir)/pre-inst-env $(GUILE_TOOLS) compile $(GUILE_WARNINGS) -o "$@" "$<" + +moddir=$(prefix)/share/guile/site/2.0 +godir=$(libdir)/guile/2.0/ccache + +SOURCES = \ + syntax-highlight/parsers.scm \ + syntax-highlight/scheme.scm \ + syntax-highlight.scm + +EXTRA_DIST += \ + pre-inst-env.in \ + README \ + guix.scm diff --git a/README b/README new file mode 100644 index 0000000..f0a05df --- /dev/null +++ b/README @@ -0,0 +1,66 @@ +-*- mode: org -*- + +Guile-syntax-highlight is a general-purpose syntax highlighting +library for GNU Guile. It can parse code written in various +programming languages into a simple s-expression that can be easily +converted to HTML (via SXML) or any other format for rendering. + +* Example + + #+BEGIN_SRC scheme + (use-modules (syntax-highlight) + (syntax-highlight scheme) + (sxml simple)) + + (define code + "(define (square x) \"Return the square of X.\" (* x x))") + + ;; Get raw highlights list. + (define highlighted-code + (highlight scheme-highlighter code)) + + ;; Convert to SXML. + (define highlighted-sxml + (highlights->sxml highlighted-code)) + + ;; Write HTML to stdout. + (display (sxml->xml highlighted-sxml)) + (newline) + #+END_SRC + +* Requirements + + - GNU Guile >= 2.0.9 + +* Building + + Guile-syntax-highlight uses the familiar GNU build system and + requires GNU Make to build. + +** From tarball + + After extracting the tarball, run: + + #+BEGIN_SRC sh + ./configure + make + make install + #+END_SRC + +** From Git + + In addition to GNU Make, building from Git requires GNU Automake + and Autoconf. + + #+BEGIN_SRC sh + git clone git@dthompson.us:guile-syntax-highlight.git + cd guile-syntax-highlight + ./bootstrap + ./configure + make + make install + #+END_SRC + +* License + + LGPLv3 or later. See =COPYING= for the full license text. diff --git a/bootstrap b/bootstrap new file mode 100755 index 0000000..872167c --- /dev/null +++ b/bootstrap @@ -0,0 +1,3 @@ +#!/bin/sh + +autoreconf -vif diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..d41b6d4 --- /dev/null +++ b/configure.ac @@ -0,0 +1,14 @@ +dnl -*- Autoconf -*- + +AC_INIT(Guile-syntax-highlight, 0.1) +AC_CONFIG_SRCDIR(syntax-highlight) +AC_CONFIG_AUX_DIR([build-aux]) +AM_INIT_AUTOMAKE([color-tests -Wall -Wno-portability foreign]) +AM_SILENT_RULES([yes]) + +AC_CONFIG_FILES([Makefile]) +AC_CONFIG_FILES([pre-inst-env], [chmod +x pre-inst-env]) + +GUILE_PROGS([2.0.9]) + +AC_OUTPUT diff --git a/guix.scm b/guix.scm new file mode 100644 index 0000000..090a8f7 --- /dev/null +++ b/guix.scm @@ -0,0 +1,59 @@ +;;; guile-syntax-highlight --- General-purpose syntax highlighter +;;; Copyright © 2015 David Thompson +;;; +;;; Guile-syntax-highlight is free software; you can redistribute it +;;; and/or modify it under the terms of the GNU Lesser General Public +;;; License as published by the Free Software Foundation; either +;;; version 3 of the License, or (at your option) any later version. +;;; +;;; Guile-syntax-highlight 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 Lesser General Public License for more details. +;;; +;;; You should have received a copy of the GNU Lesser General Public +;;; License along with guile-syntax-highlight. If not, see +;;; . + +;;; Commentary: +;; +;; GNU Guix development package. To build and install, run: +;; +;; guix package -f guix.scm +;; +;; To use as the basis for a development environment, run: +;; +;; guix environment -l guix.scm +;; +;;; Code: + +(use-modules (guix packages) + (guix licenses) + (guix git-download) + (guix build-system gnu) + (gnu packages) + (gnu packages autotools) + (gnu packages guile)) + +(package + (name "guile-syntax-highlight") + (version "0.1") + (source #f) + (build-system gnu-build-system) + (arguments + '(#:phases + (modify-phases %standard-phases + (add-after 'unpack 'bootstrap + (lambda _ (zero? (system* "sh" "bootstrap"))))))) + (native-inputs + `(("autoconf" ,autoconf) + ("automake" ,automake))) + (inputs + `(("guile" ,guile-2.0))) + (synopsis "General-purpose syntax highlighter for GNU Guile") + (description "Guile-syntax-highlight is a general-purpose syntax +highlighting library for GNU Guile. It can parse code written in +various programming languages into a simple s-expression that can be +converted to HTML (via SXML) or any other format for rendering.") + (home-page "http://dthompson.us/software/guile-syntax-highlight") + (license lgpl3+)) diff --git a/pre-inst-env.in b/pre-inst-env.in new file mode 100644 index 0000000..3d2a138 --- /dev/null +++ b/pre-inst-env.in @@ -0,0 +1,30 @@ +#!/bin/sh + +# guile-syntax-highlight --- General-purpose syntax highlighter +# Copyright © 2015 David Thompson +# +# Guile-syntax-highlight is free software; you can redistribute it +# and/or modify it under the terms of the GNU Lesser General Public +# License as published by the Free Software Foundation; either +# version 3 of the License, or (at your option) any later version. +# +# Guile-syntax-highlight 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 Lesser General Public License for more details. +# +# You should have received a copy of the GNU Lesser General Public +# License along with guile-syntax-highlight. If not, see +# . + +abs_top_srcdir="`cd "@abs_top_srcdir@" > /dev/null; pwd`" +abs_top_builddir="`cd "@abs_top_builddir@" > /dev/null; pwd`" + +GUILE_LOAD_COMPILED_PATH="$abs_top_builddir${GUILE_LOAD_COMPILED_PATH:+:}$GUILE_LOAD_COMPILED_PATH" +GUILE_LOAD_PATH="$abs_top_builddir:$abs_top_srcdir${GUILE_LOAD_PATH:+:}:$GUILE_LOAD_PATH" +export GUILE_LOAD_COMPILED_PATH GUILE_LOAD_PATH + +PATH="$abs_top_builddir/scripts:$PATH" +export PATH + +exec "$@" diff --git a/syntax-highlight.scm b/syntax-highlight.scm new file mode 100644 index 0000000..8aba7db --- /dev/null +++ b/syntax-highlight.scm @@ -0,0 +1,67 @@ +;;; guile-syntax-highlight -- General-purpose syntax highlighter +;;; Copyright © 2015 David Thompson +;;; +;;; Guile-syntax-highlight is free software; you can redistribute it +;;; and/or modify it under the terms of the GNU Lesser General Public +;;; License as published by the Free Software Foundation; either +;;; version 3 of the License, or (at your option) any later version. +;;; +;;; Guile-syntax-highlight 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 Lesser General Public License for more details. +;;; +;;; You should have received a copy of the GNU Lesser General Public +;;; License along with guile-syntax-highlight. If not, see +;;; . + +;;; Commentary: +;; +;; General-purpose syntax highlighting framework. +;; +;;; Code: + +(define-module (syntax-highlight) + #:use-module (ice-9 match) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-11) + #:use-module (srfi srfi-26) + #:use-module (srfi srfi-41) + #:export (highlight + highlights->sxml)) + +(define (string->stream str) + "Convert the string STR into a stream of characters." + (stream-map (lambda (i) + (string-ref str i)) + (stream-range 0 (string-length str)))) + +(define* (highlight highlighter #:optional (stream (current-input-port))) + "Apply HIGHLIGHTER, a syntax highlighting procedure, to STREAM. +STREAM may be an open port, string, or SRFI-41 character stream. If +STREAM is not specified, characters are read from the current input +port." + (let-values (((result stream) + (highlighter (cond + ((port? stream) + (port->stream stream)) + ((string? stream) + (string->stream stream)) + ((stream? stream) + stream) + (else + (error "Cannot convert to stream: " stream)))))) + result)) + +(define (highlights->sxml highlights) + "Convert HIGHLIGHTS, a list of syntax highlighting expressions, into +a list of SXML 'span' nodes. Each 'span' node has a 'class' attribute +corresponding to the highlighting tag name." + (define (tag->class tag) + (string-append "syntax-" (symbol->string tag))) + + (map (match-lambda + ((? string? str) str) + ((tag text) + `(span (@ (class ,(tag->class tag))) ,text))) + highlights)) diff --git a/syntax-highlight/parsers.scm b/syntax-highlight/parsers.scm new file mode 100644 index 0000000..2569b04 --- /dev/null +++ b/syntax-highlight/parsers.scm @@ -0,0 +1,198 @@ +;;; guile-syntax-highlight --- General-purpose syntax highlighter +;;; Copyright © 2015 David Thompson +;;; +;;; Guile-syntax-highlight is free software; you can redistribute it +;;; and/or modify it under the terms of the GNU Lesser General Public +;;; License as published by the Free Software Foundation; either +;;; version 3 of the License, or (at your option) any later version. +;;; +;;; Guile-syntax-highlight 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 Lesser General Public License for more details. +;;; +;;; You should have received a copy of the GNU Lesser General Public +;;; License along with guile-syntax-highlight. If not, see +;;; . + +;;; Commentary: +;; +;; Parsing utilities. +;; +;;; Code: + +(define-module (syntax-highlight parsers) + #:use-module (ice-9 match) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-11) + #:use-module (srfi srfi-26) + #:use-module (srfi srfi-41) + #:export (parse-fail + parse-bind + parse-return + parse-lift + parse-never + parse-map + parse-either + parse-both + parse-any + parse-each + parse-many + parse-string + parse-char-set + parse-whitespace + parse-delimited + tagged-parser)) + +;;; +;;; Parser combinators +;;; + +(define (parse-fail stream) + "Return a failed parse value with STREAM as the remainder." + (values #f stream)) + +(define (parse-bind proc parser) + (lambda (stream) + (let-values (((result stream) (parser stream))) + (if result + ((proc result) stream) + (parse-fail stream))))) + +(define (parse-return x) + "Return a parser that always yields X as the parse result." + (lambda (stream) + (values x stream))) + +(define (parse-lift proc) + "Return a procedure that wraps the result of PROC in a parser." + (lambda args + (parse-return (apply proc args)))) + +(define (parse-never stream) + "Always fail to parse STREAM." + (parse-fail stream)) + +(define (parse-map proc parser) + "Return a new parser that applies PROC to result of PARSER." + (parse-bind (parse-lift proc) parser)) + +(define (parse-either first second) + "Create a parser that tries to parse with FIRST or, if that fails, +parses SECOND." + (lambda (stream) + (let-values (((result stream) (first stream))) + (if result + (values result stream) + (second stream))))) + +(define (parse-both first second) + "Create a parser that returns a pair of the results of the parsers +FIRST and SECOND if both are successful." + (lambda (stream) + (let-values (((result1 stream) (first stream))) + (if result1 + (let-values (((result2 stream) (second stream))) + (if result2 + (values (cons result1 result2) stream) + (parse-fail stream))) + (parse-fail stream))))) + +(define (parse-any . parsers) + "Create a parser that returns the result of the first successful +parser in PARSERS. This parser fails if no parser in PARSERS +succeeds." + (fold-right parse-either parse-never parsers)) + +(define (parse-each . parsers) + "Create a parser that builds a list of the results of PARSERS. This +parser fails without consuming any input if any parser in PARSERS +fails." + (fold-right parse-both (parse-return '()) parsers)) + +(define (parse-many parser) + "Create a parser that uses PARSER as many times as possible until it +fails and return the results of each successful parse in a list. This +parser always succeeds." + (lambda (stream) + (let loop ((stream stream) + (results '())) + (let-values (((result remaining) (parser stream))) + (if result + (loop remaining (cons result results)) + (values (reverse results) + remaining)))))) + +(define stream->string (compose list->string stream->list)) + +(define (parse-string str) + "Create a parser that succeeds when the front of the stream contains +the character sequence in STR." + (lambda (stream) + (let ((input (stream->string (stream-take (string-length str) stream)))) + (if (string=? str input) + (values str (stream-drop (string-length str) stream)) + (parse-fail stream))))) + +(define (parse-char-set char-set) + "Create a parser that returns a string containing a contiguous +sequence of characters that belong to CHAR-SET." + (lambda (stream) + (let loop ((stream stream) + (result '())) + (define (stringify) + (if (null? result) + (parse-fail stream) + (values (list->string (reverse result)) + stream))) + + (stream-match stream + (() (stringify)) + ((head . rest) + (if (char-set-contains? char-set head) + (loop rest (cons head result)) + (stringify))))))) + +(define parse-whitespace + (parse-char-set char-set:whitespace)) + +(define* (parse-delimited str #:key (until str) (escape #\\)) + "Create a parser that parses a delimited character sequence +beginning with the string STR and ending with the string UNTIL. +Within the sequence, ESCAPE is recognized as the escape character." + (let ((parse-str (parse-string str)) + (parse-until (parse-string until))) + + (define (stringify lst stream) + (values (list->string (reverse lst)) + stream)) + + (define (parse-until-maybe stream) + (let-values (((result remaining) (parse-until stream))) + (and result remaining))) + + (lambda (stream) + (let-values (((result remaining) (parse-str stream))) + (if result + (let loop ((stream remaining) + (result (reverse (string->list str)))) + (cond + ((stream-null? stream) + (stringify result stream)) + ;; Escape character. + ((eqv? (stream-car stream) escape) + (stream-match (stream-cdr stream) + (() (stringify result stream-null)) + ((head . rest) + (loop rest (cons* head escape result))))) + ((parse-until-maybe stream) => + (lambda (remaining) + (stringify (append (string->list until) result) remaining))) + (else + (loop (stream-cdr stream) (cons (stream-car stream) result))))) + (parse-fail stream)))))) + +(define (tagged-parser tag parser) + "Create a parser that wraps the result of PARSER in a two element +list whose first element is TAG.." + (parse-map (cut list tag <>) parser)) diff --git a/syntax-highlight/scheme.scm b/syntax-highlight/scheme.scm new file mode 100644 index 0000000..7839b1a --- /dev/null +++ b/syntax-highlight/scheme.scm @@ -0,0 +1,102 @@ +;;; guile-syntax-highlight --- General-purpose syntax highlighter +;;; Copyright © 2015 David Thompson +;;; +;;; Guile-syntax-highlight is free software; you can redistribute it +;;; and/or modify it under the terms of the GNU Lesser General Public +;;; License as published by the Free Software Foundation; either +;;; version 3 of the License, or (at your option) any later version. +;;; +;;; Guile-syntax-highlight 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 Lesser General Public License for more details. +;;; +;;; You should have received a copy of the GNU Lesser General Public +;;; License along with guile-syntax-highlight. If not, see +;;; . + +;;; Commentary: +;; +;; Syntax highlighting for Scheme. +;; +;;; Code: + +(define-module (syntax-highlight scheme) + #:use-module (srfi srfi-1) + #:use-module (srfi srfi-11) + #:use-module (srfi srfi-41) + #:use-module (syntax-highlight parsers) + #:export (scheme-highlighter)) + +(define char-set:lisp-delimiters + (char-set-union char-set:whitespace + (char-set #\( #\) #\[ #\] #\{ #\}))) + +(define (lisp-delimiter? char) + (char-set-contains? char-set:lisp-delimiters char)) + +(define (parse-specials special-words) + "Create a parser for SPECIAL-WORDS, a list of important terms for a +language." + (define (special word) + (let ((parser (tagged-parser 'special (parse-string word)))) + (lambda (stream) + (let-values (((result rest-of-stream) (parser stream))) + (if (and result (lisp-delimiter? (stream-car stream))) + (values result rest-of-stream) + (parse-fail stream)))))) + + (fold parse-either parse-never (map special special-words))) + +(define (parse-openers openers) + (define (open opener) + (tagged-parser 'open (parse-string opener))) + + (fold parse-either parse-never (map open openers))) + +(define (parse-closers closers) + (define (close closer) + (tagged-parser 'close (parse-string closer))) + + (fold parse-either parse-never (map close closers))) + +(define parse-symbol + (tagged-parser 'symbol + (parse-char-set + (char-set-complement char-set:lisp-delimiters)))) + +(define parse-keyword + (tagged-parser 'keyword + (parse-map string-concatenate + (parse-each (parse-string "#:") + (parse-char-set + (char-set-complement + char-set:lisp-delimiters)))))) + +(define parse-string-literal + (tagged-parser 'string (parse-delimited "\""))) + +(define parse-comment + (tagged-parser 'comment (parse-delimited ";" #:until "\n"))) + +(define parse-quoted-symbol + (tagged-parser 'symbol (parse-delimited "#{" #:until "}#"))) + +(define scheme-highlighter + (parse-many + (parse-any parse-whitespace + (parse-openers '("(" "[" "{")) + (parse-closers '(")" "]" "}")) + (parse-specials '("define" "lambda")) + parse-string-literal + parse-comment + parse-keyword + parse-quoted-symbol + parse-symbol))) + +;; (scheme-highlighter +;; (string->stream +;; "(define* (foo bar #:key (baz 'quux)) +;; \"This is a docstring!\" +;; #u8(1 2 3) +;; (1+ bar))")) -- cgit v1.2.3