--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# This is an example of a client of the frontend without command-line processing.
+#
+# It offers a simple nitcorn web server that offers a textarea and nitpick and nitlignt it.
+module nitlight_as_a_service
+
+import frontend
+import highlight
+import nitcorn
+import nitcorn::log
+
+# Fully process a content as a nit source file.
+fun hightlightcode(hl: HighlightVisitor, content: String): SourceFile
+do
+ # Prepare a stand-alone tool context
+ var tc = new ToolContext
+ tc.nit_dir = tc.locate_nit_dir # still use the common lib to have core
+ tc.keep_going = true # no exit, obviously
+ tc.opt_warn.value = -1 # no output, obviously
+
+ # Prepare an stand-alone model and model builder.
+ # Unfortunately, models are enclosing and append-only.
+ # There is no way (yet?) to have a shared module `core` with
+ # isolated and throwable user modules.
+ var model = new Model
+ var mb = new ModelBuilder(model, tc)
+
+ # Parse the code
+ var source = new SourceFile.from_string("", content)
+ var lexer = new Lexer(source)
+ var parser = new Parser(lexer)
+ var tree = parser.parse
+
+ # Check syntax error
+ var eof = tree.n_eof
+ if eof isa AError then
+ mb.error(eof, eof.message)
+ hl.hightlight_source(source)
+ return source
+ end
+ var amodule = tree.n_base.as(not null)
+
+ # Load the AST as a module in the model
+ # Then process it
+ mb.load_rt_module(null, amodule, "")
+ mb.run_phases
+
+ # Highlight the processed module
+ hl.enter_visit(amodule)
+ return source
+end
+
+# Nitcorn service to hightlight code
+#
+# It's a single stand-alone page that has to form to itself.
+class HighlightAction
+ super Action
+
+ redef fun answer(http_request, turi)
+ do
+ var code = http_request.post_args.get_or_null("code")
+
+ var hl = new HighlightVisitor
+ var page = "<doctype html><html><head>{hl.head_content}<style>{hl.css_content} textarea \{width:100%;\}</style></head><body>"
+ # Add the form+textarea
+ page += """
+ <form action="#light" method=post><textarea name=code rows=10>{{{code or else ""}}}</textarea><br><input type=submit></form>
+ """
+
+ if code != null then
+ # There is code? Process it
+ var source = hightlightcode(hl, code)
+
+ # Inject highlight
+ page += "<pre id=light><code>"
+ page += hl.html.write_to_string
+ page += "</code></pre><hr>"
+ page += "<ul>"
+
+ # List messages
+ for m in source.messages do
+ page += "<li>{m.location.as(not null)}: {m.text}</li>"
+ end
+ page += "</ul>"
+ end
+
+ page += hl.foot_content
+
+ var response = new HttpResponse(200)
+ response.header["Content-Type"] = "text/html"
+ response.body = page
+ return response
+ end
+end
+
+var host = "localhost:8080"
+if args.length > 0 then host = args.first
+
+var vh = new VirtualHost(host)
+vh.routes.add new Route("/", new HighlightAction)
+var factory = new HttpFactory.and_libevent
+factory.config.virtual_hosts.add vh
+factory.run
nitlanguage / nit.git / commitdiff