+++ /dev/null
-# This file is part of NIT ( http://www.nitlanguage.org ).
-#
-# Copyright 2008 Jean Privat <jean@pryen.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.
-
-# Full syntax analysis of NIT AST.
-# Detect syntax and some metamodel errors.
-package syntax
-
-import mmloader
-import mmbuilder
-import typing
-import icode_generation
-
-# Loader of nit source files
-class SrcModuleLoader
- super ModuleLoader
- redef type MODULE: MMSrcModule
-
- redef fun file_type do return "nit"
-
- redef fun parse_file(context, file, filename, name, dir)
- do
- var name_is_valid = name.to_s.length > 0 and name.to_s[0].is_lower
- for char in name.to_s do if not char.is_digit and not char.is_letter and not char == '_'
- then
- name_is_valid = false
- break
- end
- if not name_is_valid then
- context.error( null, "{filename}: Error module name \"{name}\", must start with a lower case letter and contain only letters, digits and '_'." )
- end
-
- var source = new SourceFile(filename, file)
- var lexer = new Lexer(source)
- var parser = new Parser(lexer)
- var node_tree = parser.parse
- if node_tree.n_base == null then
- var err = node_tree.n_eof
- assert err isa AError
- context.fatal_error(err.location, err.message)
- end
- var node_module = node_tree.n_base
- assert node_module != null
- var module_loc = new Location.with_file(source)
- var mod = new MMSrcModule(context, node_module, dir, name, module_loc)
- return mod
- end
-
- redef fun process_metamodel(context, mod)
- do
- mod.process_supermodules(context)
- context.info("Syntax analysis for module: {mod.name}", 2)
- mod.process_syntax(context)
- end
-
- init do end
-end
-
-redef class MMSrcModule
- # Loading and syntax analysis of super modules
- private fun process_supermodules(tc: ToolContext)
- do
- node.import_super_modules(tc, self)
- end
-
- # Syntax analysis and MM construction for the module
- # Require than supermodules are processed
- private fun process_syntax(tc: ToolContext)
- do
- do_mmbuilder(tc)
- tc.check_errors
-
- do_typing(tc)
- tc.check_errors
-
- generate_icode(tc)
- tc.check_errors
-
- if not tc.keep_ast then clear_ast
- end
-end
-
-redef class ToolContext
- # Should the AST be preserved in source modules after syntax processing?
- # Default is false.
- readable writable var _keep_ast: Bool = false
-end