--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Copyright 2014 Johan Kayser <kayser.johan@gmail.com>
+#
+# 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.
+
+# A version of the naive Nit interpreter for PNaCl.
+module pnacl_nit
+
+import naive_interpreter
+import debugger
+import pnacl
+intrude import toolcontext
+intrude import modelbuilder
+intrude import standard::file
+
+redef interface Object
+ # We redefine exit to start a new thread before killing the one that called exit.
+ redef fun exit(exit_value: Int)
+ do
+ var dictionary = new PepperDictionary
+ dictionary["exit"] = exit_value
+ dictionary["exit_thread"] = "A new thread has been made available for Nit."
+ create_thread
+ app.post_dictionary dictionary
+ exit_thread exit_value
+ end
+end
+
+#hack realpath.
+redef class String
+ redef fun realpath do return self
+
+ # file_exists looks in the 'files' HashMap.
+ redef fun file_exists: Bool
+ do
+ if sys.files.has_key(self) then return true
+ return false
+ end
+end
+
+redef class Sys
+ # We add two HashMap for temporary file storage.
+ # 'lib' stores the lib files.
+ var lib = new HashMap[String, String]
+ # 'files' stores the "file(s)" you want to interpret + the lib files.
+ var files = new HashMap[String, String]
+end
+
+redef class ToolContext
+ # We don't need 'the compute_nit_dir'.
+ redef fun compute_nit_dir: nullable String
+ do
+ return "/pnacl"
+ end
+end
+
+# We have to redef some IFStream methods because we don't use NativeFiles anymore.
+redef class IFStream
+
+ # Looks in the 'files' HashMap.
+ redef init open(path: String)
+ do
+ self.path = path
+ var file = sys.files[path]
+ prepare_buffer(file.length)
+ _buffer.append(file)
+ end
+
+ redef fun close
+ do
+ end_reached = true
+ end
+
+ redef fun fill_buffer
+ do
+ _buffer.clear
+ end_reached = true
+ end
+
+ redef fun reopen
+ do
+ _buffer_pos = 0
+ end
+end
+
+redef class ModelBuilder
+ # We don't use paths as the interpreter, so just return the argument.
+ redef fun module_absolute_path(path: String): String do return path
+
+ # We don't use paths as the interpreter, so we don't use location or lookpaths args (see the default implementation).
+ redef fun search_module_in_paths(location: nullable Location, name: String, lookpaths: Collection[String]): nullable ModulePath
+ do
+ var candidate: nullable String = null
+ var try_file = "{name}.nit"
+ if try_file.file_exists then
+ if candidate == null then
+ candidate = try_file
+ else if candidate != try_file then
+ # try to disambiguate conflicting modules
+ var abs_candidate = module_absolute_path(candidate)
+ var abs_try_file = module_absolute_path(try_file)
+ if abs_candidate != abs_try_file then
+ toolcontext.error(location, "Error: conflicting module file for {name}: {candidate} {try_file}")
+ end
+ end
+ end
+ if candidate == null then return null
+ return identify_file(candidate)
+ end
+end
+
+class Pnacl_nit
+ super PnaclApp
+
+ # In handle_dictionary we search for the 'operation' key in dictionaries,
+ # 'load' means that we are loading the Nit library,
+ # 'interpret' launches the interpreter code.
+ redef fun handle_dictionary(dictionary: PepperDictionary)
+ do
+ var d = dictionary.copy
+ var operation = d["operation"]
+
+ # If operation = 'intepret' we want to interpret some Nit code, so we execute the same code as in nit.nit.
+ if operation == "interpret" then
+ var args = d["args"].to_s.split(' ')
+ # Create a tool context to handle options and paths
+ var toolcontext = new ToolContext
+ toolcontext.tooldescription = "Usage: nit [OPTION]... <file.nit>...\nInterprets and debbugs Nit programs."
+ # Add an option "-o" to enable compatibilit with the tests.sh script
+ var opt = new OptionString("compatibility (does noting)", "-o")
+ toolcontext.option_context.add_option(opt)
+ var opt_mixins = new OptionArray("Additionals module to min-in", "-m")
+ toolcontext.option_context.add_option(opt_mixins)
+ # We do not add other options, so process them now!
+ toolcontext.process_options(args)
+
+ # We need a model to collect stufs
+ var model = new Model
+ # An a model builder to parse files
+ var modelbuilder = new ModelBuilder(model, toolcontext.as(not null))
+
+ var arguments = toolcontext.option_context.rest
+ var progname = arguments.first
+ sys.files[progname] = d["content"].to_s
+
+ # Here we load an process all modules passed on the command line
+ var mmodules = modelbuilder.parse([progname])
+ mmodules.add_all modelbuilder.parse(opt_mixins.value)
+ modelbuilder.run_phases
+
+ if toolcontext.opt_only_metamodel.value then exit(0)
+
+ var mainmodule: nullable MModule
+
+ # Here we launch the interpreter on the main module
+ if mmodules.length == 1 then
+ mainmodule = mmodules.first
+ else
+ mainmodule = new MModule(model, null, mmodules.first.name, mmodules.first.location)
+ mainmodule.set_imported_mmodules(mmodules)
+ end
+
+ var self_mm = mainmodule.as(not null)
+ var self_args = arguments.as(not null)
+
+ if toolcontext.opt_debugger_autorun.value then
+ modelbuilder.run_debugger_autorun(self_mm, self_args)
+ else if toolcontext.opt_debugger_mode.value then
+ modelbuilder.run_debugger(self_mm, self_args)
+ else
+ modelbuilder.run_naive_interpreter(self_mm, self_args)
+ end
+ # If operation = 'load', we are loading lib files, so we store them into HashMaps and send a response to JS.
+ else if operation == "load" then
+ var filename = d["filename"]
+ var content = d["content"]
+ if filename isa String and content isa String then
+ sys.lib[filename] = content
+ sys.files[filename] = content
+ end
+ var response = new PepperDictionary
+ response["operation"] = "load_response"
+ response["files_number"] = sys.lib.length.to_s
+ post_dictionary response
+ end
+ end
+end
+
+redef fun app do return once new Pnacl_nit
+app.initialize # Needed to correctly set up Nit control over the Pepper API.
+app.run # Wait for dictionaries.
nitlanguage / nit.git / blobdiff