Merged r9481:9518 on jblum/grc_reorganize into trunk. Reorganized grc source under gnuradio.grc module. Trunk passes make distcheck.

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9525 221aa14e-8319-0410-a670-987f0aec2ac5

1 files changed, 134 insertions, 0 deletions

diff --git a/grc/src/platforms/python/Generator.py b/grc/src/platforms/python/Generator.py
new file mode 100644
index 000000000..bd3d69cc2
--- /dev/null
+++ b/grc/src/platforms/python/Generator.py
@@ -0,0 +1,134 @@
+"""
+Copyright 2008 Free Software Foundation, Inc.
+This file is part of GNU Radio
+
+GNU Radio Companion is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+GNU Radio Companion is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+"""
+
+import os
+import subprocess
+from Cheetah.Template import Template
+from utils import expr_utils
+from Constants import \
+	TOP_BLOCK_FILE_MODE, HIER_BLOCK_FILE_MODE, \
+	HIER_BLOCKS_LIB_DIR, PYEXEC, \
+	FLOW_GRAPH_TEMPLATE
+from utils import convert_hier
+
+class Generator(object):
+
+	def __init__(self, flow_graph, file_path):
+		"""
+		Initialize the generator object.
+		Determine the file to generate.
+		@param flow_graph the flow graph object
+		@param file_path the path to write the file to
+		"""
+		self._flow_graph = flow_graph
+		self._generate_options = self._flow_graph.get_option('generate_options')
+		if self._generate_options == 'hb':
+			self._mode = HIER_BLOCK_FILE_MODE
+			dirname = HIER_BLOCKS_LIB_DIR
+		else:
+			self._mode = TOP_BLOCK_FILE_MODE
+			dirname = os.path.dirname(file_path)
+		filename = self._flow_graph.get_option('id') + '.py'
+		self._file_path = os.path.join(dirname, filename)
+
+	def get_file_path(self): return self._file_path
+
+	def write(self):
+		#generate
+		open(self.get_file_path(), 'w').write(str(self))
+		if self._generate_options == 'hb':
+			#convert hier block to xml wrapper
+			convert_hier.convert_hier(self._flow_graph, self.get_file_path())
+		os.chmod(self.get_file_path(), self._mode)
+
+	def get_popen(self):
+		"""
+		Execute this python flow graph.
+		@return a popen object
+		"""
+		#execute
+		cmds = [PYEXEC, self.get_file_path()]
+		if self._generate_options == 'no_gui':
+			cmds = ['xterm', '-e'] + cmds
+		p = subprocess.Popen(args=cmds, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=False, universal_newlines=True)
+		return p
+
+	def __str__(self):
+		"""
+		Convert the flow graph to python code.
+		@return a string of python code
+		"""
+		imports = self._flow_graph.get_imports()
+		variables = self._flow_graph.get_variables()
+		parameters = self._flow_graph.get_parameters()
+		#list of variables with controls
+		controls = filter(lambda v: v.get_key().startswith('variable_'), variables)
+		#list of blocks not including variables and imports and parameters and disabled
+		blocks = sorted(self._flow_graph.get_enabled_blocks(), lambda x, y: cmp(x.get_id(), y.get_id()))
+		blocks = filter(lambda b: b not in (imports + parameters + variables), blocks)
+		#list of connections where each endpoint is enabled
+		connections = self._flow_graph.get_enabled_connections()
+		#list of variable names
+		var_ids = [var.get_id() for var in parameters + variables]
+		#list of callbacks (prepend self.)
+		callbacks = [
+			expr_utils.expr_prepend(cb, var_ids, 'self.')
+			for cb in sum([block.get_callbacks() for block in self._flow_graph.get_blocks()], [])
+		]
+		#map var id to the expression (prepend self.)
+		var_id2expr = dict(
+			[(var.get_id(), expr_utils.expr_prepend(var.get_make().split('\n')[0], var_ids, 'self.'))
+			for var in parameters + variables]
+		)
+		#create graph structure for variables
+		variable_graph = expr_utils.get_graph(var_id2expr)
+		#map var id to direct dependents
+		#for each var id, make a list of all 2nd order edges
+		#use all edges of that id that are not also 2nd order edges
+		#meaning: list variables the ONLY depend directly on this variable
+		#and not variables that also depend indirectly on this variable
+		var_id2deps = dict(
+			[(var_id, filter(lambda e: e not in sum([list(variable_graph.get_edges(edge))
+				for edge in variable_graph.get_edges(var_id)], []), variable_graph.get_edges(var_id)
+				)
+			)
+			for var_id in var_ids]
+		)
+		#map var id to callbacks
+		var_id2cbs = dict(
+			[(var_id, filter(lambda c: var_id in expr_utils.expr_split(c), callbacks))
+			for var_id in var_ids]
+		)
+		#load the namespace
+		namespace = {
+			'imports': imports,
+			'flow_graph': self._flow_graph,
+			'variables': variables,
+			'controls': controls,
+			'parameters': parameters,
+			'blocks': blocks,
+			'connections': connections,
+			'generate_options': self._generate_options,
+			'var_id2expr': var_id2expr,
+			'var_id2deps': var_id2deps,
+			'var_id2cbs': var_id2cbs,
+		}
+		#build the template
+		t = Template(open(FLOW_GRAPH_TEMPLATE, 'r').read(), namespace)
+		return str(t)