[EXPERIMENTAL] Vue: new parser

Continuation of universal-ctags#1581.

Signed-off-by: Masatake YAMATO <yamato@redhat.com>

Author: masatake

Units/simple-vue.d/args.ctags

@@ -0,0 +1,3 @@
+--sort=no
+--extras=+g
+--fields=+ln

Units/simple-vue.d/expected.tags

@@ -0,0 +1,5 @@
+slot	input.vue	/^  <p id="slot">{{ greeting }} World!<\/p>$/;"	I	line:4	language:HTML
+makeWord	input.vue	/^function makeWord ()$/;"	f	line:8	language:JavaScript
+data	input.vue	/^  data: function () {$/;"	m	line:14	language:JavaScript	class:module.exports
+exports	input.vue	/^module.exports = {$/;"	c	line:13	language:JavaScript	class:module
+p	input.vue	/^p {$/;"	s	line:23	language:CSS

Units/simple-vue.d/input.vue

@@ -0,0 +1,27 @@
+<!-- Taken from https://vuejs.org/v2/guide/single-file-components.html -->
+
+<template>
+  <p id="slot">{{ greeting }} World!</p>
+</template>
+
+<script>
+function makeWord ()
+{
+	return 'Hello';
+}
+
+module.exports = {
+  data: function () {
+    return {
+      greeting: makeWord ()
+    }
+  }
+}
+</script>
+
+<style scoped>
+p {
+  font-size: 2em;
+  text-align: center;
+}
+</style>

docs/news.rst

@@ -93,6 +93,7 @@ The following parsers have been added:
 * TTCN
 * TypeScript
 * Varlink *peg/packcc*
+* Vue *optlib*
 * WindRes
 * XSLT v1.0 *libxml*
 * Yacc

main/parsers_p.h

@@ -139,6 +139,7 @@
 	UCtagsAspellParser, \
 	VhdlParser, \
 	VimParser, \
+	VueParser, \
 	WindResParser, \
 	YaccParser, \
 	YumRepoParser, \

optlib/vue.c

@@ -0,0 +1,52 @@
+/*
+ * Generated by ./misc/optlib2c from optlib/vue.ctags, Don't edit this manually.
+ */
+#include "general.h"
+#include "parse.h"
+#include "routines.h"
+#include "field.h"
+#include "xtag.h"
+
+
+static void initializeVueParser (const langType language CTAGS_ATTR_UNUSED)
+{
+}
+
+extern parserDefinition* VueParser (void)
+{
+	static const char *const extensions [] = {
+		"vue",
+		NULL
+	};
+
+	static const char *const aliases [] = {
+		NULL
+	};
+
+	static const char *const patterns [] = {
+		NULL
+	};
+
+	static tagRegexTable VueTagRegexTable [] = {
+		{"<template>\n((.|\n){1,}\n)</template>", "",
+		"", "{guest=HTML,1start,1end}", NULL, true},
+		{"<script>\n((.|\n){1,}\n)</script>", "",
+		"", "{guest=JavaScript,1start,1end}", NULL, true},
+		{"<style([ ]{1,}[a-z]{1,})*>\n((.|\n){1,}\n)</style>", "",
+		"", "{guest=CSS,2start,2end}", NULL, true},
+	};
+
+
+	parserDefinition* const def = parserNew ("Vue");
+
+	def->enabled       = true;
+	def->extensions    = extensions;
+	def->patterns      = patterns;
+	def->aliases       = aliases;
+	def->method        = METHOD_NOT_CRAFTED|METHOD_REGEX;
+	def->tagRegexTable = VueTagRegexTable;
+	def->tagRegexCount = ARRAY_SIZE(VueTagRegexTable);
+	def->initialize    = initializeVueParser;
+
+	return def;
+}

optlib/vue.ctags

@@ -0,0 +1,36 @@
+#
+# vue.ctags --- a parser for VueJS Single File Components
+#
+#  Copyright (c) 2019, Red Hat, Inc.
+#  Copyright (c) 2019, Masatake YAMATO
+#
+#  Author: Masatake YAMATO <yamato@redhat.com>
+#
+# This program 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.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+# USA.
+#
+#
+# References:
+#
+# - https://vuejs.org/v2/guide/single-file-components.html
+#
+--langdef=Vue
+--map-Vue=+.vue
+
+--mline-regex-Vue=/<template>\n((.|\n){1,}\n)<\/template>//{guest=HTML,1start,1end}
+--mline-regex-Vue=/<script>\n((.|\n){1,}\n)<\/script>//{guest=JavaScript,1start,1end}
+--mline-regex-Vue=/<style([ ]{1,}[a-z]{1,})*>\n((.|\n){1,}\n)<\/style>//{guest=CSS,2start,2end}
+
+