import modelbuilder
import nitni
-redef class ToolContext
- var ffi_language_assignation_phase: Phase = new FFILanguageAssignationPhase(self, null)
-end
-
-class FFILanguageAssignationPhase
- super Phase
-
- # All supported languages
- var languages = new Array[FFILanguage]
-
- redef fun process_nmodule(nmodule)
- do
- for block in nmodule.n_extern_code_blocks do
- verify_foreign_code_on_node( block )
- end
- end
-
- redef fun process_npropdef(npropdef)
- do
- if npropdef isa AMethPropdef then
- var code_block = npropdef.n_extern_code_block
- if code_block != null then
- verify_foreign_code_on_node( code_block )
- end
- end
- end
-
- redef fun process_nclassdef(nclassdef)
- do
- if nclassdef isa AStdClassdef and nclassdef.n_extern_code_block != null then
- verify_foreign_code_on_node( nclassdef.n_extern_code_block.as(not null) )
- end
- end
-
- private fun verify_foreign_code_on_node(n: AExternCodeBlock)
- do
- var found = false
- for v in languages do
- var identified = v.identify_language(n)
- if identified then
- if found and identified then
- toolcontext.error(n.location, "FFI Error: two languages identified as possible handlers.")
- end
- n.language = v
- found = true
- end
- end
-
- if not found then toolcontext.error(n.location, "FFI Error: unsupported language.")
- end
-end
+import light_ffi_base
redef class MModule
- var ffi_files = new Array[ExternFile]
-
# Callbacks used by this module, classified by language
var ffi_callbacks = new HashMap[FFILanguage, Set[NitniCallback]]
end
-redef class AExternCodeBlock
- fun language_name: nullable String do
- if n_in_language == null then return null
- return n_in_language.n_string.without_quotes
- end
- fun language_name_lowered: nullable String do
- if language_name == null then return null
- return language_name.to_lower
- end
-
- fun code: String do return n_extern_code_segment.without_guard
-
- var language: nullable FFILanguage = null
-end
-
# Visitor for a specific languages. Works kinda like a `Phase` and is executed
# by a `Phase`.
-class FFILanguage
- var ffi_language_assignation_phase: FFILanguageAssignationPhase
-
- init
- do
- ffi_language_assignation_phase.languages.add(self)
- end
-
- # Is this `block` written in this language?
- fun identify_language(block: AExternCodeBlock ): Bool is abstract
-
- # Generate wrapper code for this module/header code block
- fun compile_module_block(block: AExternCodeBlock, ecc: CCompilationUnit, mmodule: MModule) is abstract
-
- # Generate wrapper code for this extern method
- fun compile_extern_method(block: AExternCodeBlock, m: AMethPropdef,
- ecc: CCompilationUnit, nmodule: MModule) is abstract
-
- # Generate wrapper code for this extern class
- fun compile_extern_class(block: AExternCodeBlock, m: AClassdef,
- ecc: CCompilationUnit, mmodule: MModule) is abstract
-
- # Get the foreign type of this extern class definition
- fun get_ftype(block: AExternCodeBlock, m: AClassdef): ForeignType is abstract
-
+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
-
- # Complete compilation of generated code
- fun compile_to_files(mmodule: MModule, directory: String) do end
-end
-
-redef class TString
- # Returns the content of this node without both of the surrounding "
- fun without_quotes: String
- do
- assert text.length >= 2
- return text.substring(1, text.length-2)
- end
-end
-
-redef class TExternCodeSegment
- # Returns the content of this node without the surrounding `{ and `}
- fun without_guard: String
- do
- assert text.length >= 4
- return text.substring(2, text.length-4)
- end
-end
-
-redef class CCompilationUnit
- fun write_as_impl(mmodule: MModule, compdir: String)
- do
- var base_name = "{mmodule.c_name}._ffi"
-
- var h_file = "{base_name}.h"
- var guard = "{mmodule.c_name.to_upper}_NIT_H"
- write_header_to_file(mmodule, "{compdir}/{h_file}", new Array[String], guard)
-
- var c_file = "{base_name}.c"
- write_body_to_file(mmodule, "{compdir}/{c_file}", ["<stdlib.h>", "<stdio.h>", "\"{h_file}\""])
-
- files.add( "{compdir}/{c_file}" )
- end
-
- fun write_header_to_file(mmodule: MModule, file: String, includes: Array[String], guard: String)
- do
- var stream = new FileWriter.open( file )
-
- # header comments
- var module_info = "/*\n\tExtern implementation of Nit module {mmodule.name}\n*/\n"
-
- stream.write( module_info )
-
- stream.write( "#ifndef {guard}\n" )
- stream.write( "#define {guard}\n\n" )
-
- for incl in includes do stream.write( "#include {incl}\n" )
-
- compile_header_core( stream )
-
- # header file guard close
- stream.write( "#endif\n" )
- stream.close
- end
-
- fun write_body_to_file(mmodule: MModule, file: String, includes: Array[String])
- do
- var stream = new FileWriter.open(file)
-
- var module_info = "/*\n\tExtern implementation of Nit module {mmodule.name}\n*/\n"
-
- stream.write( module_info )
- for incl in includes do stream.write( "#include {incl}\n" )
-
- compile_body_core( stream )
-
- stream.close
- end
-end
-
-class ForeignType
- fun ctype: String do return "void*"
end
--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# 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.
+# 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.
+
+# Tools and utilities for language targetted FFI implementations
+module light_ffi_base
+
+import c_tools
+import parser
+import modelbuilder
+import nitni::nitni_utilities
+
+redef class ToolContext
+ var ffi_language_assignation_phase: Phase = new FFILanguageAssignationPhase(self, null)
+end
+
+class FFILanguageAssignationPhase
+ super Phase
+
+ # All supported languages
+ var languages = new Array[FFILanguage]
+
+ redef fun process_nmodule(nmodule)
+ do
+ for block in nmodule.n_extern_code_blocks do
+ verify_foreign_code_on_node( block )
+ end
+ end
+
+ redef fun process_npropdef(npropdef)
+ do
+ if npropdef isa AMethPropdef then
+ var code_block = npropdef.n_extern_code_block
+ if code_block != null then
+ verify_foreign_code_on_node( code_block )
+ end
+ end
+ end
+
+ redef fun process_nclassdef(nclassdef)
+ do
+ if nclassdef isa AStdClassdef and nclassdef.n_extern_code_block != null then
+ verify_foreign_code_on_node( nclassdef.n_extern_code_block.as(not null) )
+ end
+ end
+
+ private fun verify_foreign_code_on_node(n: AExternCodeBlock)
+ do
+ var found = false
+ for v in languages do
+ var identified = v.identify_language(n)
+ if identified then
+ if found and identified then
+ toolcontext.error(n.location, "FFI Error: two languages identified as possible handlers.")
+ end
+ n.language = v
+ found = true
+ end
+ end
+
+ if not found then toolcontext.error(n.location, "FFI Error: unsupported language.")
+ end
+end
+
+redef class MModule
+ var ffi_files = new Array[ExternFile]
+end
+
+redef class AExternCodeBlock
+ fun language_name: nullable String do
+ if n_in_language == null then return null
+ return n_in_language.n_string.without_quotes
+ end
+ fun language_name_lowered: nullable String do
+ if language_name == null then return null
+ return language_name.to_lower
+ end
+
+ fun code: String do return n_extern_code_segment.without_guard
+
+ var language: nullable FFILanguage = null
+end
+
+# Visitor for a specific languages. Works kinda like a `Phase` and is executed
+# by a `Phase`.
+class FFILanguage
+ var ffi_language_assignation_phase: FFILanguageAssignationPhase
+
+ init
+ do
+ ffi_language_assignation_phase.languages.add(self)
+ end
+
+ # Is this `block` written in this language?
+ fun identify_language(block: AExternCodeBlock ): Bool is abstract
+
+ # Generate wrapper code for this module/header code block
+ fun compile_module_block(block: AExternCodeBlock, ecc: CCompilationUnit, mmodule: MModule) is abstract
+
+ # Generate wrapper code for this extern method
+ fun compile_extern_method(block: AExternCodeBlock, m: AMethPropdef,
+ ecc: CCompilationUnit, nmodule: MModule) is abstract
+
+ # Generate wrapper code for this extern class
+ fun compile_extern_class(block: AExternCodeBlock, m: AClassdef,
+ ecc: CCompilationUnit, mmodule: MModule) is abstract
+
+ # Get the foreign type of this extern class definition
+ fun get_ftype(block: AExternCodeBlock, m: AClassdef): ForeignType is abstract
+
+ # Complete compilation of generated code
+ fun compile_to_files(mmodule: MModule, directory: String) do end
+end
+
+redef class TString
+ # Returns the content of this node without both of the surrounding "
+ fun without_quotes: String
+ do
+ assert text.length >= 2
+ return text.substring(1, text.length-2)
+ end
+end
+
+redef class TExternCodeSegment
+ # Returns the content of this node without the surrounding `{ and `}
+ fun without_guard: String
+ do
+ assert text.length >= 4
+ return text.substring(2, text.length-4)
+ end
+end
+
+redef class CCompilationUnit
+ fun write_as_impl(mmodule: MModule, compdir: String)
+ do
+ var base_name = "{mmodule.c_name}._ffi"
+
+ var h_file = "{base_name}.h"
+ var guard = "{mmodule.c_name.to_upper}_NIT_H"
+ write_header_to_file(mmodule, "{compdir}/{h_file}", new Array[String], guard)
+
+ var c_file = "{base_name}.c"
+ write_body_to_file(mmodule, "{compdir}/{c_file}", ["<stdlib.h>", "<stdio.h>", "\"{h_file}\""])
+
+ files.add( "{compdir}/{c_file}" )
+ end
+
+ fun write_header_to_file(mmodule: MModule, file: String, includes: Array[String], guard: String)
+ do
+ var stream = new FileWriter.open( file )
+
+ # header comments
+ var module_info = "/*\n\tExtern implementation of Nit module {mmodule.name}\n*/\n"
+
+ stream.write( module_info )
+
+ stream.write( "#ifndef {guard}\n" )
+ stream.write( "#define {guard}\n\n" )
+
+ for incl in includes do stream.write( "#include {incl}\n" )
+
+ compile_header_core( stream )
+
+ # header file guard close
+ stream.write( "#endif\n" )
+ stream.close
+ end
+
+ fun write_body_to_file(mmodule: MModule, file: String, includes: Array[String])
+ do
+ var stream = new FileWriter.open(file)
+
+ var module_info = "/*\n\tExtern implementation of Nit module {mmodule.name}\n*/\n"
+
+ stream.write( module_info )
+ for incl in includes do stream.write( "#include {incl}\n" )
+
+ compile_body_core( stream )
+
+ stream.close
+ end
+end
+
+class ForeignType
+ fun ctype: String do return "void*"
+end
nitlanguage / nit.git / commitdiff