1 files changed, 348 insertions, 0 deletions
diff --git a/extras/ocaml.py b/extras/ocaml.py
new file mode 100644
index 0000000..7d785c6
--- /dev/null
+++ b/extras/ocaml.py
@@ -0,0 +1,348 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2010 (ita)
+
+"ocaml support"
+
+import os, re
+from waflib import Utils, Task
+from waflib.Logs import error
+from waflib.TaskGen import feature, before_method, after_method, extension
+
+EXT_MLL = ['.mll']
+EXT_MLY = ['.mly']
+EXT_MLI = ['.mli']
+EXT_MLC = ['.c']
+EXT_ML  = ['.ml']
+
+open_re = re.compile(r'^\s*open\s+([a-zA-Z]+)(;;){0,1}$', re.M)
+foo = re.compile(r"""(\(\*)|(\*\))|("(\\.|[^"\\])*"|'(\\.|[^'\\])*'|.[^()*"'\\]*)""", re.M)
+def filter_comments(txt):
+	meh = [0]
+	def repl(m):
+		if m.group(1):
+			meh[0] += 1
+		elif m.group(2):
+			meh[0] -= 1
+		elif not meh[0]:
+			return m.group()
+		return ''
+	return foo.sub(repl, txt)
+
+def scan(self):
+	node = self.inputs[0]
+	code = filter_comments(node.read())
+
+	global open_re
+	names = []
+	import_iterator = open_re.finditer(code)
+	if import_iterator:
+		for import_match in import_iterator:
+			names.append(import_match.group(1))
+	found_lst = []
+	raw_lst = []
+	for name in names:
+		nd = None
+		for x in self.incpaths:
+			nd = x.find_resource(name.lower()+'.ml')
+			if not nd:
+				nd = x.find_resource(name+'.ml')
+			if nd:
+				found_lst.append(nd)
+				break
+		else:
+			raw_lst.append(name)
+
+	return (found_lst, raw_lst)
+
+native_lst=['native', 'all', 'c_object']
+bytecode_lst=['bytecode', 'all']
+
+@feature('ocaml')
+def init_ml(self):
+	Utils.def_attrs(self,
+		type = 'all',
+		incpaths_lst = [],
+		bld_incpaths_lst = [],
+		mlltasks = [],
+		mlytasks = [],
+		mlitasks = [],
+		native_tasks = [],
+		bytecode_tasks = [],
+		linktasks = [],
+		bytecode_env = None,
+		native_env = None,
+		compiled_tasks = [],
+		includes = '',
+		uselib = '',
+		are_deps_set = 0)
+
+@feature('ocaml')
+@after_method('init_ml')
+def init_envs_ml(self):
+
+	self.islibrary = getattr(self, 'islibrary', False)
+
+	global native_lst, bytecode_lst
+	self.native_env = None
+	if self.type in native_lst:
+		self.native_env = self.env.derive()
+		if self.islibrary:
+			self.native_env['OCALINKFLAGS']   = '-a'
+
+	self.bytecode_env = None
+	if self.type in bytecode_lst:
+		self.bytecode_env = self.env.derive()
+		if self.islibrary:
+			self.bytecode_env['OCALINKFLAGS'] = '-a'
+
+	if self.type == 'c_object':
+		self.native_env.append_unique('OCALINKFLAGS_OPT', '-output-obj')
+
+@feature('ocaml')
+@before_method('apply_vars_ml')
+@after_method('init_envs_ml')
+def apply_incpaths_ml(self):
+	inc_lst = self.includes.split()
+	lst = self.incpaths_lst
+	for dir in inc_lst:
+		node = self.path.find_dir(dir)
+		if not node:
+			error("node not found: " + str(dir))
+			continue
+		if not node in lst:
+			lst.append(node)
+		self.bld_incpaths_lst.append(node)
+	# now the nodes are added to self.incpaths_lst
+
+@feature('ocaml')
+@before_method('process_source')
+def apply_vars_ml(self):
+	for i in self.incpaths_lst:
+		if self.bytecode_env:
+			app = self.bytecode_env.append_value
+			app('OCAMLPATH', ['-I', i.bldpath(), '-I', i.srcpath()])
+
+		if self.native_env:
+			app = self.native_env.append_value
+			app('OCAMLPATH', ['-I', i.bldpath(), '-I', i.srcpath()])
+
+	varnames = ['INCLUDES', 'OCAMLFLAGS', 'OCALINKFLAGS', 'OCALINKFLAGS_OPT']
+	for name in self.uselib.split():
+		for vname in varnames:
+			cnt = self.env[vname+'_'+name]
+			if cnt:
+				if self.bytecode_env:
+					self.bytecode_env.append_value(vname, cnt)
+				if self.native_env:
+					self.native_env.append_value(vname, cnt)
+
+@feature('ocaml')
+@after_method('process_source')
+def apply_link_ml(self):
+
+	if self.bytecode_env:
+		ext = self.islibrary and '.cma' or '.run'
+
+		linktask = self.create_task('ocalink')
+		linktask.bytecode = 1
+		linktask.set_outputs(self.path.find_or_declare(self.target + ext))
+		linktask.env = self.bytecode_env
+		self.linktasks.append(linktask)
+
+	if self.native_env:
+		if self.type == 'c_object':
+			ext = '.o'
+		elif self.islibrary:
+			ext = '.cmxa'
+		else:
+			ext = ''
+
+		linktask = self.create_task('ocalinkx')
+		linktask.set_outputs(self.path.find_or_declare(self.target + ext))
+		linktask.env = self.native_env
+		self.linktasks.append(linktask)
+
+		# we produce a .o file to be used by gcc
+		self.compiled_tasks.append(linktask)
+
+@extension(*EXT_MLL)
+def mll_hook(self, node):
+	mll_task = self.create_task('ocamllex', node, node.change_ext('.ml'))
+	mll_task.env = self.native_env.derive()
+	self.mlltasks.append(mll_task)
+
+	self.source.append(mll_task.outputs[0])
+
+@extension(*EXT_MLY)
+def mly_hook(self, node):
+	mly_task = self.create_task('ocamlyacc', node, [node.change_ext('.ml'), node.change_ext('.mli')])
+	mly_task.env = self.native_env.derive()
+	self.mlytasks.append(mly_task)
+	self.source.append(mly_task.outputs[0])
+
+	task = self.create_task('ocamlcmi', mly_task.outputs[1], mly_task.outputs[1].change_ext('.cmi'))
+	task.env = self.native_env.derive()
+
+@extension(*EXT_MLI)
+def mli_hook(self, node):
+	task = self.create_task('ocamlcmi', node, node.change_ext('.cmi'))
+	task.env = self.native_env.derive()
+	self.mlitasks.append(task)
+
+@extension(*EXT_MLC)
+def mlc_hook(self, node):
+	task = self.create_task('ocamlcc', node, node.change_ext('.o'))
+	task.env = self.native_env.derive()
+	self.compiled_tasks.append(task)
+
+@extension(*EXT_ML)
+def ml_hook(self, node):
+	if self.native_env:
+		task = self.create_task('ocamlx', node, node.change_ext('.cmx'))
+		task.env = self.native_env.derive()
+		task.incpaths = self.bld_incpaths_lst
+		self.native_tasks.append(task)
+
+	if self.bytecode_env:
+		task = self.create_task('ocaml', node, node.change_ext('.cmo'))
+		task.env = self.bytecode_env.derive()
+		task.bytecode = 1
+		task.incpaths = self.bld_incpaths_lst
+		self.bytecode_tasks.append(task)
+
+def compile_may_start(self):
+
+	if not getattr(self, 'flag_deps', ''):
+		self.flag_deps = 1
+
+		# the evil part is that we can only compute the dependencies after the
+		# source files can be read (this means actually producing the source files)
+		if getattr(self, 'bytecode', ''):
+			alltasks = self.generator.bytecode_tasks
+		else:
+			alltasks = self.generator.native_tasks
+
+		self.signature() # ensure that files are scanned - unfortunately
+		tree = self.generator.bld
+		for node in self.inputs:
+			lst = tree.node_deps[self.uid()]
+			for depnode in lst:
+				for t in alltasks:
+					if t == self:
+						continue
+					if depnode in t.inputs:
+						self.set_run_after(t)
+
+		# TODO necessary to get the signature right - for now
+		delattr(self, 'cache_sig')
+		self.signature()
+
+	return Task.Task.runnable_status(self)
+
+class ocamlx(Task.Task):
+	"""native caml compilation"""
+	color   = 'GREEN'
+	run_str = '${OCAMLOPT} ${OCAMLPATH} ${OCAMLFLAGS} ${OCAMLINCLUDES} -c -o ${TGT} ${SRC}'
+	scan    = scan
+	runnable_status = compile_may_start
+
+class ocaml(Task.Task):
+	"""bytecode caml compilation"""
+	color   = 'GREEN'
+	run_str = '${OCAMLC} ${OCAMLPATH} ${OCAMLFLAGS} ${OCAMLINCLUDES} -c -o ${TGT} ${SRC}'
+	scan    = scan
+	runnable_status = compile_may_start
+
+class ocamlcmi(Task.Task):
+	"""interface generator (the .i files?)"""
+	color   = 'BLUE'
+	run_str = '${OCAMLC} ${OCAMLPATH} ${OCAMLINCLUDES} -o ${TGT} -c ${SRC}'
+	before  = ['ocamlcc', 'ocaml', 'ocamlcc']
+
+class ocamlcc(Task.Task):
+	"""ocaml to c interfaces"""
+	color   = 'GREEN'
+	run_str = 'cd ${TGT[0].bld_dir()} && ${OCAMLOPT} ${OCAMLFLAGS} ${OCAMLPATH} ${OCAMLINCLUDES} -c ${SRC[0].abspath()}'
+
+class ocamllex(Task.Task):
+	"""lexical generator"""
+	color   = 'BLUE'
+	run_str = '${OCAMLLEX} ${SRC} -o ${TGT}'
+	before  = ['ocamlcmi', 'ocaml', 'ocamlcc']
+
+class ocamlyacc(Task.Task):
+	"""parser generator"""
+	color   = 'BLUE'
+	run_str = '${OCAMLYACC} -b ${tsk.base()} ${SRC}'
+	before  = ['ocamlcmi', 'ocaml', 'ocamlcc']
+
+	def base(self):
+		node = self.outputs[0]
+		s = os.path.splitext(node.name)[0]
+		return node.bld_dir() + os.sep + s
+
+def link_may_start(self):
+
+	if getattr(self, 'bytecode', 0):
+		alltasks = self.generator.bytecode_tasks
+	else:
+		alltasks = self.generator.native_tasks
+
+	for x in alltasks:
+		if not x.hasrun:
+			return Task.ASK_LATER
+
+	if not getattr(self, 'order', ''):
+
+		# now reorder the inputs given the task dependencies
+		# this part is difficult, we do not have a total order on the tasks
+		# if the dependencies are wrong, this may not stop
+		seen = []
+		pendant = []+alltasks
+		while pendant:
+			task = pendant.pop(0)
+			if task in seen:
+				continue
+			for x in task.run_after:
+				if not x in seen:
+					pendant.append(task)
+					break
+			else:
+				seen.append(task)
+		self.inputs = [x.outputs[0] for x in seen]
+		self.order = 1
+	return Task.Task.runnable_status(self)
+
+class ocalink(Task.Task):
+	"""bytecode caml link"""
+	color   = 'YELLOW'
+	run_str = '${OCAMLC} -o ${TGT} ${OCAMLINCLUDES} ${OCALINKFLAGS} ${SRC}'
+	runnable_status = link_may_start
+	after = ['ocaml', 'ocamlcc']
+
+class ocalinkx(Task.Task):
+	"""native caml link"""
+	color   = 'YELLOW'
+	run_str = '${OCAMLOPT} -o ${TGT} ${OCAMLINCLUDES} ${OCALINKFLAGS_OPT} ${SRC}'
+	runnable_status = link_may_start
+	after = ['ocamlx', 'ocamlcc']
+
+def configure(conf):
+	opt = conf.find_program('ocamlopt', var='OCAMLOPT', mandatory=False)
+	occ = conf.find_program('ocamlc', var='OCAMLC', mandatory=False)
+	if (not opt) or (not occ):
+		conf.fatal('The objective caml compiler was not found:\ninstall it or make it available in your PATH')
+
+	v = conf.env
+	v['OCAMLC']       = occ
+	v['OCAMLOPT']     = opt
+	v['OCAMLLEX']     = conf.find_program('ocamllex', var='OCAMLLEX', mandatory=False)
+	v['OCAMLYACC']    = conf.find_program('ocamlyacc', var='OCAMLYACC', mandatory=False)
+	v['OCAMLFLAGS']   = ''
+	where = conf.cmd_and_log(conf.env.OCAMLC + ['-where']).strip()+os.sep
+	v['OCAMLLIB']     = where
+	v['LIBPATH_OCAML'] = where
+	v['INCLUDES_OCAML'] = where
+	v['LIB_OCAML'] = 'camlrun'
+