X-Git-Url: http://nitlanguage.org diff --git a/contrib/jwrapper/src/code_generator.nit b/contrib/jwrapper/src/code_generator.nit index 84682d9..f0be48c 100644 --- a/contrib/jwrapper/src/code_generator.nit +++ b/contrib/jwrapper/src/code_generator.nit @@ -17,22 +17,29 @@ # Services to generate extern class `in "Java"` module code_generator -intrude import types +intrude import model class CodeGenerator var with_attributes: Bool var comment_unknown_types: Bool - var file_out: OFStream + var file_out: FileWriter var java_class: JavaClass var nb_params: Int - var module_name: String - fun code_warehouse: CodeWarehouse do return once new CodeWarehouse + var module_name: nullable String = null init (file_name: String, jclass: JavaClass, with_attributes, comment: Bool) do - file_out = new OFStream.open(file_name) - module_name = file_name.substring(0, file_name.search(".nit").from) + file_out = new FileWriter.open(file_name) + + var nit_ext = ".nit" + if file_name.has_suffix(nit_ext) then + # Output file ends with .nit, we expect it to be a valid name + module_name = file_name.strip_extension(nit_ext) + + # Otherwise, it may be anything so do not declare a module + end + self.java_class = jclass self.with_attributes = with_attributes self.comment_unknown_types = comment @@ -72,7 +79,11 @@ class CodeGenerator end file_out.write(gen_licence) - file_out.write("module {module_name}\n") + + var module_name = module_name + if module_name != null then file_out.write "module {module_name}\n" + + file_out.write("\n") file_out.write(imports.join("")) file_out.write("\n") file_out.write(class_content.join("")) @@ -81,9 +92,8 @@ class CodeGenerator fun gen_licence: String do - return """# This file is part of NIT (http://www.nitlanguage.org). -# -# Copyright [Year] [Author name] + return """ +# 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. @@ -97,7 +107,7 @@ class CodeGenerator # See the License for the specific language governing permissions and # limitations under the License. -# This code has been generated using `javap` +# This code has been generated using `jwrapper` """ end @@ -128,9 +138,9 @@ class CodeGenerator fun gen_attribute(jid: String, jtype: JavaType): String do - return "\tvar {jid.to_snake_case}: {jtype.to_nit_type}\n" + return "\tvar {jid.to_nit_method_name}: {jtype.to_nit_type}\n" end - + fun gen_method(jmethod_id: String, nmethod_id: String, jreturn_type: JavaType, jparam_list: Array[JavaType]): String do var java_params = "" @@ -138,7 +148,7 @@ class CodeGenerator var nit_id = "arg" var nit_id_no = 0 var nit_types = new Array[NitType] - var comment = "" + var comment = "" # Parameters for i in [0..jparam_list.length[ do @@ -177,7 +187,7 @@ class CodeGenerator end # Method identifier - var method_id = nmethod_id.to_snake_case + var method_id = nmethod_id.to_nit_method_name var nit_signature = new Array[String] nit_signature.add "\tfun {method_id}" @@ -216,7 +226,7 @@ class CodeGenerator temp.add(" in \"Java\" `\{\n{comment}\t\trecv.{jmethod_id}({java_params});\n{comment}\t`\}\n") # Methods with return type else if return_type != null then - temp.add(" in \"Java\" `\{\n{comment}\t\treturn {jreturn_type.return_cast} recv.{jmethod_id}({java_params});\n{comment}\t`\}\n") + temp.add(" in \"Java\" `\{\n{comment}\t\treturn {jreturn_type.return_cast}recv.{jmethod_id}({java_params});\n{comment}\t`\}\n") # Methods without return type else if jreturn_type.is_void then temp.add(" in \"Java\" `\{\n{comment}\t\trecv.{jmethod_id}({java_params});\n{comment}\t`\}\n") @@ -229,29 +239,21 @@ class CodeGenerator end end -# Contains raw code mostly used to copy collections -class CodeWarehouse - - private fun create_imports(nit_type: NitType, is_param: Bool): String +redef class String + # Convert the Java method name `self` to the Nit style + # + # * Converts to snake case + # * Strips `Get` and `Set` + # * Add suffix `=` to setters + fun to_nit_method_name: String do - var imports = "" - var ntype = nit_type.to_s - var gen_type = nit_type.generic_params.join(", ") - - if not is_param then - if nit_type.is_map then - imports = """ import {{{ntype}}}, {{{ntype}}}.[]=""" - else - imports = """ import {{{ntype}}}, {{{ntype}}}.add""" - end - else if nit_type.id == "Array" then - imports = """ import {{{ntype}}}, {{{ntype}}}.length, {{{ntype}}}.[]""" - else if nit_type.is_map then - imports = """ import {{{ntype}}}.iterator, Iterator[{{{gen_type}}}].is_ok, Iterator[{{{gen_type}}}].next, Iterator[{{{gen_type}}}].item, Iterator[{{{gen_type}}}].key""" - else - imports = """ import {{{ntype}}}.iterator, Iterator[{{{gen_type}}}].is_ok, Iterator[{{{gen_type}}}].next, Iterator[{{{gen_type}}}].item""" + var name = self.to_snake_case + if name.has_prefix("get_") then + name = name.substring_from(4) + else if name.has_prefix("set_") then + name = name.substring_from(4) + "=" end - return imports + return name end end