[beast: 6/70] V8BSE: V8Stub.py: add skeleton for language binding generation

[Tim Janik <timj src gnome org>]

commit e2842d057714e68017edaa79ad9b82cfd76e27ab
Author: Tim Janik <timj gnu org>
Date:   Fri Feb 17 20:55:24 2017 +0100

    V8BSE: V8Stub.py: add skeleton for language binding generation
    
    Signed-off-by: Tim Janik <timj gnu org>

 ebeast/v8bse/V8Stub.py |   47 +++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 47 insertions(+), 0 deletions(-)
---
diff --git a/ebeast/v8bse/V8Stub.py b/ebeast/v8bse/V8Stub.py
new file mode 100644
index 0000000..505a2a1
--- /dev/null
+++ b/ebeast/v8bse/V8Stub.py
@@ -0,0 +1,47 @@
+# This Source Code Form is licensed MPL-2.0: http://mozilla.org/MPL/2.0
+"""AidaPyxxStub - Aida Cython Code Generator
+
+More details at http://www.rapicorn.org/
+"""
+import Decls, re, sys, os
+
+class Generator:
+  def __init__ (self, idl_file, module_name):
+    assert isinstance (module_name, str)
+    self.ntab = 26
+    self.idl_file = idl_file
+    self.module_name = module_name
+    self.strip_path = ""
+    self.idcounter = 1001
+    self.marshallers = {}
+  def generate_types_v8 (self, implementation_types):
+    s  = '// === Generated by V8Stub.py ===            -*-mode:javascript;-*-\n'
+    return s
+
+def generate (namespace_list, **args):
+  import sys, tempfile, os
+  config = {}
+  config.update (args)
+  if '--print-include-path' in config.get ('backend-options', []):
+    includestem = os.path.dirname (os.path.dirname (os.path.abspath (__file__)))
+    includepath = os.path.join (includestem, 'v8')
+    print includepath
+  else:
+    outname = config.get ('output', 'testmodule')
+    if outname == '-':
+      raise RuntimeError ("-: stdout is not support for generation of multiple files")
+    idlfiles = config['files']
+    if len (idlfiles) != 1:
+      raise RuntimeError ("V8Stub: exactly one IDL input file is required")
+    gg = Generator (idlfiles[0], outname)
+    for opt in config['backend-options']:
+      if opt.startswith ('strip-path='):
+        gg.strip_path += opt[11:]
+    fname = outname
+    fout = open (fname, 'w')
+    textstring = gg.generate_types_v8 (config['implementation_types'])
+    fout.write (textstring)
+    fout.close()
+
+# register extension hooks
+__Aida__.add_backend (__file__, generate, __doc__)