# This file is part of NIT ( http://www.nitlanguage.org ).
#
-# Copyright 2012-2013 Alexis Laferrière <alexis.laf@xymus.net>
+# Copyright 2012 Alexis Laferrière <alexis.laf@xymus.net>
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# See the License for the specific language governing permissions and
# limitations under the License.
+# Tools and utilities for implement FFI with different languages
module ffi_base
-import native_interface
-import syntax # TODO move extern_implementation to MM
import c_tools
+import parser
+import modelbuilder
+import nitni
-interface FFIVisited
- fun accept_ffi_visitor( v : FFIVisitor ) do end
-end
-
-redef class ExternCode
- super FFIVisited
-
- # last resort for extern method
- # assumes this is a code block in the root of a module
- # should never be called if the extern method is implemented inline by a known language
- redef fun accept_ffi_visitor( v )
- do
- var language = self.language
- if language != null then
- v.tc.warning( null, "language \"{language}\" used to implement a code block in {v.mmmodule} is unknown." )
- else
- v.tc.warning( null, "please specify a language to implement code blocks in {v.mmmodule}." ) # is ok with spec as of now, won't be raised
- end
- end
-
- var language_lowered : nullable String = null
-
- redef init ( language, code, loc )
- do
- super
- if language != null then language_lowered = language.to_lower
- end
-end
-
-redef class MMMethod
- super FFIVisited
-
- # last resort for extern method
- # should never be called if the extern method is implemented inline by a known language
- redef fun accept_ffi_visitor( v )
- do
- if extern_implementation != null then
- var language = extern_implementation.language
- if language != null then
- v.tc.warning( null, "language \"{language}\" used to implement {full_name} is unknown." )
- else
- v.tc.warning( null, "please specify a language to implement {full_name}." ) # is ok with spec as of now, won't be raised
- end
- end
- end
-end
-
-# set of extern imports in a language to be used by a module
-# FIXME move to native_interface or MM?
-class ExternImportSet
- # set of imported functions, cached to avoid repetitions
- var callbacks : Set[ MMExplicitImport ] = new HashSet[ MMExplicitImport ]
-
- # set of imported functions, cached to avoid repetitions
- var supers : Set[ MMExplicitImport ] = new HashSet[ MMExplicitImport ]
-
- # set of relevant types, cached to avoid repetitions
- var types : Set[ MMType ] = new HashSet[ MMType ]
+import light_ffi_base
- # set of imported casts and as, cached to avoid repetitions
- var casts : Set[ MMImportedCast ] = new HashSet[ MMImportedCast ]
+redef class MModule
+ # Callbacks used by this module, classified by language
+ var ffi_callbacks = new HashMap[FFILanguage, Set[NitniCallback]]
end
-redef class MMLocalClass
- super FFIVisited
-
- fun c_type : nullable String do return null
-end
-
-redef class MMModule
- super FFIVisited
-
- redef fun accept_ffi_visitor( v )
- do
- for local_class in local_classes do
- # if class is extern and defined here first
- if local_class.global.intro == local_class and
- local_class.global.is_extern then
- local_class.accept_ffi_visitor( v )
- end
-
- for prop in local_class.local_local_properties do
- # if defined of redefined in this module and is extern
- if prop.mmmodule == self and prop isa MMMethod and prop.is_extern and
- prop.extern_implementation != null then
- prop.accept_ffi_visitor( v )
- end
- end
-
- end
-
- for block in extern_code_blocks do block.accept_ffi_visitor( v )
- end
-end
-
-class FFIVisitor
- var tc : ToolContext
-
- # module being visited
- var mmmodule : MMModule
-
- var compilation_unit = new CCompilationUnit
+# Visitor for a specific languages. Works kinda like a `Phase` and is executed
+# by a `Phase`.
+redef class FFILanguage
+ # Generate the code to offer this callback if foreign code
+ fun compile_callback(callback: NitniCallback, mmodule: MModule,
+ mainmmodule: MModule, ecc: CCompilationUnit) is abstract
end
-
nitlanguage / nit.git / blobdiff