1 files changed, 178 insertions, 0 deletions
diff --git a/third_party/waf/waflib/extras/swig.py b/third_party/waf/waflib/extras/swig.py
new file mode 100644
index 00000000000..b654db7f211
--- /dev/null
+++ b/third_party/waf/waflib/extras/swig.py
@@ -0,0 +1,178 @@
+#! /usr/bin/env python
+# encoding: UTF-8
+# Petar Forai
+# Thomas Nagy 2008-2010 (ita)
+
+import re
+from waflib import Task, Logs
+from waflib.TaskGen import extension
+from waflib.Configure import conf
+from waflib.Tools import c_preproc
+
+"""
+tasks have to be added dynamically:
+- swig interface files may be created at runtime
+- the module name may be unknown in advance
+"""
+
+SWIG_EXTS = ['.swig', '.i']
+
+re_module = re.compile('%module(?:\s*\(.*\))?\s+(.+)', re.M)
+
+re_1 = re.compile(r'^%module.*?\s+([\w]+)\s*?$', re.M)
+re_2 = re.compile('[#%]include [<"](.*)[">]', re.M)
+
+class swig(Task.Task):
+	color   = 'BLUE'
+	run_str = '${SWIG} ${SWIGFLAGS} ${SWIGPATH_ST:INCPATHS} ${SWIGDEF_ST:DEFINES} ${SRC}'
+	ext_out = ['.h'] # might produce .h files although it is not mandatory
+	vars = ['SWIG_VERSION', 'SWIGDEPS']
+
+	def runnable_status(self):
+		for t in self.run_after:
+			if not t.hasrun:
+				return Task.ASK_LATER
+
+		if not getattr(self, 'init_outputs', None):
+			self.init_outputs = True
+			if not getattr(self, 'module', None):
+				# search the module name
+				txt = self.inputs[0].read()
+				m = re_module.search(txt)
+				if not m:
+					raise ValueError("could not find the swig module name")
+				self.module = m.group(1)
+
+			swig_c(self)
+
+			# add the language-specific output files as nodes
+			# call funs in the dict swig_langs
+			for x in self.env['SWIGFLAGS']:
+				# obtain the language
+				x = x[1:]
+				try:
+					fun = swig_langs[x]
+				except KeyError:
+					pass
+				else:
+					fun(self)
+
+		return super(swig, self).runnable_status()
+
+	def scan(self):
+		"scan for swig dependencies, climb the .i files"
+		lst_src = []
+
+		seen = []
+		to_see = [self.inputs[0]]
+
+		while to_see:
+			node = to_see.pop(0)
+			if node in seen:
+				continue
+			seen.append(node)
+			lst_src.append(node)
+
+			# read the file
+			code = node.read()
+			code = c_preproc.re_nl.sub('', code)
+			code = c_preproc.re_cpp.sub(c_preproc.repl, code)
+
+			# find .i files and project headers
+			names = re_2.findall(code)
+			for n in names:
+				for d in self.generator.includes_nodes + [node.parent]:
+					u = d.find_resource(n)
+					if u:
+						to_see.append(u)
+						break
+				else:
+					Logs.warn('could not find %r' % n)
+
+		return (lst_src, [])
+
+# provide additional language processing
+swig_langs = {}
+def swigf(fun):
+	swig_langs[fun.__name__.replace('swig_', '')] = fun
+swig.swigf = swigf
+
+def swig_c(self):
+	ext = '.swigwrap_%d.c' % self.generator.idx
+	flags = self.env['SWIGFLAGS']
+	if '-c++' in flags:
+		ext += 'xx'
+	out_node = self.inputs[0].parent.find_or_declare(self.module + ext)
+
+	if '-c++' in flags:
+		c_tsk = self.generator.cxx_hook(out_node)
+	else:
+		c_tsk = self.generator.c_hook(out_node)
+
+	c_tsk.set_run_after(self)
+
+	ge = self.generator.bld.producer
+	ge.outstanding.insert(0, c_tsk)
+	ge.total += 1
+
+	try:
+		ltask = self.generator.link_task
+	except AttributeError:
+		pass
+	else:
+		ltask.set_run_after(c_tsk)
+		ltask.inputs.append(c_tsk.outputs[0])
+
+	self.outputs.append(out_node)
+
+	if not '-o' in self.env['SWIGFLAGS']:
+		self.env.append_value('SWIGFLAGS', ['-o', self.outputs[0].abspath()])
+
+@swigf
+def swig_python(tsk):
+	node = tsk.inputs[0].parent
+	if tsk.outdir:
+		node = tsk.outdir
+	tsk.set_outputs(node.find_or_declare(tsk.module+'.py'))
+
+@swigf
+def swig_ocaml(tsk):
+	node = tsk.inputs[0].parent
+	if tsk.outdir:
+		node = tsk.outdir
+	tsk.set_outputs(node.find_or_declare(tsk.module+'.ml'))
+	tsk.set_outputs(node.find_or_declare(tsk.module+'.mli'))
+
+@extension(*SWIG_EXTS)
+def i_file(self, node):
+	# the task instance
+	tsk = self.create_task('swig')
+	tsk.set_inputs(node)
+	tsk.module = getattr(self, 'swig_module', None)
+
+	flags = self.to_list(getattr(self, 'swig_flags', []))
+	tsk.env.append_value('SWIGFLAGS', flags)
+
+	tsk.outdir = None
+	if '-outdir' in flags:
+		outdir = flags[flags.index('-outdir')+1]
+		outdir = tsk.generator.bld.bldnode.make_node(outdir)
+		outdir.mkdir()
+		tsk.outdir = outdir
+
+@conf
+def check_swig_version(self):
+	"""Returns a tuple representing the swig version, like (1,3,28)"""
+	reg_swig = re.compile(r'SWIG Version\s(.*)', re.M)
+	swig_out = self.cmd_and_log(self.env.SWIG + ['-version'])
+
+	swigver = tuple([int(s) for s in reg_swig.findall(swig_out)[0].split('.')])
+	self.env['SWIG_VERSION'] = swigver
+	msg = 'Checking for swig version'
+	self.msg(msg, '.'.join(map(str, swigver)))
+	return swigver
+
+def configure(conf):
+	conf.find_program('swig', var='SWIG')
+	conf.env.SWIGPATH_ST = '-I%s'
+	conf.env.SWIGDEF_ST = '-D%s'