lib/: expand all packages in their own directories

[nit.git] / lib / gen_nit / gen_nit.nit

diff --git a/lib/gen_nit/gen_nit.nit b/lib/gen_nit/gen_nit.nit
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+# 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.
+
+# Support to generate and otherwise manipulate Nit code
+module gen_nit
+
+import template
+
+redef class Sys
+       # Reserved keywords in the Nit language
+       var keywords: Set[String] is lazy do return new HashSet[String].from([
+               "abort", "abstract", "and", "assert", "break", "class", "continue",
+               "do", "else", "end", "enum", "extern", "false", "implies", "import",
+               "init", "interface", "intrude", "if", "in", "is", "isa", "isset",
+               "for", "label", "loop", "module", "new", "not", "null", "nullable",
+               "or", "package", "private", "protected", "public", "return", "self",
+               "super", "then", "true", "type", "var", "while"])
+
+       # Top-level methods from the `Object` class
+       #
+       # This is a non-exaustive list that targets conflict-prone names.
+       var methods_in_object: Array[String] is lazy do return [
+               "class_name", "get_time", "hash", "inspect", "inspect_head",
+               "is_same_type", "is_same_instance", "object_id", "output",
+               "output_class_name", "sys", "to_s"]
+
+       # Methods in the `Pointer` class
+       #
+       # This is a non-exaustive list that targets conflict-prone names.
+       var methods_in_pointer: Array[String] is lazy do return methods_in_object + [
+               "free"]
+end
+
+# Template of a Nit module to generate Nit code
+class NitModule
+       super Template
+
+       # Header on top of the module, usually the documentation
+       var header: nullable Writable = null is writable
+
+       # The module's name
+       var name: Writable is writable
+
+       # Annotations on the module declaration
+       var annotations = new Array[Writable]
+
+       # Importation declarations
+       #
+       # Accepts two formats:
+       # * Module name only, short or qualified: `json`, `gamnit::flat`, etc.
+       # * Full importation declaration: `import json`, `private import gamnit::flat`, etc.
+       var imports = new Set[Writable]
+
+       # Main content of this module
+       var content = new Array[Writable]
+
+       redef fun rendering
+       do
+               var header = header
+               if header != null then add header
+
+               var name = name
+               if annotations.is_empty then
+                       add "module {name}\n\n"
+               else
+                       add "module {name} is\n"
+                       for annotation in annotations do add "\t{annotation}\n"
+                       add "end\n\n"
+               end
+
+               for i in imports do
+                       if i.to_s.has("import ") then
+                               add i
+                       else
+                               add "import "
+                               add i
+                       end
+                       add "\n"
+               end
+               add "\n"
+
+               for l in content do
+                       add l
+                       add "\n"
+               end
+       end
+end