initial commit

.gitignore

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+build
+obj
+*.make
+Makefile
+nohup.out
+*.pyc
+.ycm_extra_conf.py
+**/generated

LICENSE

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+Copyright (C) 2014 Tamás Szelei
+
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# Implementing a code generator with libclang
+
+This repository contains the full source code for my article about
+[implementing a code generator with libclang](http://szelei.me/code-generator).
+Please refer to the article for details. 
+
+## Building
+
+The following is required to build this project:
+
+  * LLVM 3.2+
+  * Python 2.7
+  * Premake4 (http://industriousone.com/premake)
+
+To build the project and run the code generator at the same time, run ./build.sh

build.sh

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+#!/bin/sh
+cd src
+./boost_python_gen.py textcomponent.h
+cd ..
+premake4 gmake
+make

premake4.lua

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+-- this is a premake4 script
+-- see http://industriousone.com/premake
+
+solution "codegen"
+    language "c++"
+    includedirs { "./src", "/usr/include/python2.7" }
+    buildoptions { "-std=c++11" }
+    links { "boost_python", "boost_filesystem", "boost_system", "python2.7" }
+
+    configurations { "debug", "release" }
+
+    configuration "debug"
+        targetdir "build/debug"
+        flags "Symbols"
+        defines "DEBUG"
+
+    configuration "release"
+        targetdir "build/release"
+        defines { "RELEASE", "NDEBUG" }
+
+    project "codegen"
+        kind "ConsoleApp"
+        files "./src/**cc"

src/bind.mako

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+#include <boost/python.hpp>
+#include "${include_file}"
+
+using namespace boost::python;
+
+BOOST_PYTHON_MODULE(${module_name})
+{
+% for c in classes:
+    class_<${c.name}>("${c.name}")
+    % for f in c.functions:
+        % if not "hidden" in f.annotations:
+        .def("${f.name}", &${c.name}::${f.name})
+        % endif
+    % endfor
+    ;
+% endfor
+}
+
+void init_bindings()
+{
+    Py_Initialize();
+    init${module_name}();
+}

src/boost_python_gen.py

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+#!/usr/bin/python
+# vim: set fileencoding=utf-8
+
+import sys
+import os
+import clang.cindex
+import itertools
+from mako.template import Template
+
+def get_annotations(node):
+    return [c.displayname for c in node.get_children()
+            if c.kind == clang.cindex.CursorKind.ANNOTATE_ATTR]
+
+class Function(object):
+    def __init__(self, cursor):
+        self.name = cursor.spelling
+        self.annotations = get_annotations(cursor)
+        self.access = cursor.access_specifier
+
+class Class(object):
+    def __init__(self, cursor):
+        self.name = cursor.spelling
+        self.functions = []
+        self.annotations = get_annotations(cursor)
+
+        for c in cursor.get_children():
+            if (c.kind == clang.cindex.CursorKind.CXX_METHOD and
+                c.access_specifier == clang.cindex.AccessSpecifier.PUBLIC):
+                f = Function(c)
+                self.functions.append(f)
+
+def build_classes(cursor):
+    result = []
+    for c in cursor.get_children():
+        if (c.kind == clang.cindex.CursorKind.CLASS_DECL
+            and c.location.file.name == sys.argv[1]):
+            a_class = Class(c)
+            result.append(a_class)
+        elif c.kind == clang.cindex.CursorKind.NAMESPACE:
+            child_classes = build_classes(c)
+            result.extend(child_classes)
+
+    return result
+
+
+if len(sys.argv) != 2:
+    print("Usage: boost_python_gen.py [header file name]")
+    sys.exit()
+
+clang.cindex.Config.set_library_file('/usr/local/lib/libclang.so')
+index = clang.cindex.Index.create()
+translation_unit = index.parse(sys.argv[1], ['-x', 'c++', '-std=c++11', '-D__CODE_GENERATOR__'])
+
+classes = build_classes(translation_unit.cursor)
+tpl = Template(filename='bind.mako')
+rendered = tpl.render(
+             classes=classes,
+             module_name='CodegenExample',
+             include_file=sys.argv[1])
+
+OUTPUT_DIR = 'generated'
+
+if not os.path.isdir(OUTPUT_DIR): os.mkdir(OUTPUT_DIR)
+
+with open("generated/{}.bind.cc".format(sys.argv[1]), "w") as f:
+    f.write(rendered)