diff options
| author | Sebastian Koslowski <sebastian.koslowski@gmail.com> | 2016-05-03 17:13:08 +0200 |
|---|---|---|
| committer | Johnathan Corgan <johnathan@corganlabs.com> | 2017-06-29 09:16:49 -0700 |
| commit | 7f7fa2f91467fdb2b11312be8562e7b51fdeb199 (patch) | |
| tree | 24268bac15b9920d2a15ddbb45eaf3b9b03718a1 /grc/core/blocks/_build.py | |
| parent | 44cae388881821942e691a4d69a923bbd8d347db (diff) | |
grc: added yaml/mako support
Includes basic converter from XML/Cheetah to YAML/Mako based block format.
Diffstat (limited to 'grc/core/blocks/_build.py')
| -rw-r--r-- | grc/core/blocks/_build.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/grc/core/blocks/_build.py b/grc/core/blocks/_build.py new file mode 100644 index 0000000000..9a50086cea --- /dev/null +++ b/grc/core/blocks/_build.py @@ -0,0 +1,69 @@ +# Copyright 2016 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 + +from __future__ import absolute_import + +import re + +from .block import Block +from ._flags import Flags +from ._templates import MakoTemplates + + +def build(id, label='', category='', flags='', documentation='', + checks=None, value=None, + parameters=None, inputs=None, outputs=None, templates=None, **kwargs): + block_id = id + + cls = type(block_id, (Block,), {}) + cls.key = block_id + + cls.label = label or block_id.title() + cls.category = [cat.strip() for cat in category.split('/') if cat.strip()] + + cls.flags = Flags(flags) + if re.match(r'options$|variable|virtual', block_id): + cls.flags += Flags.NOT_DSP + Flags.DISABLE_BYPASS + + cls.documentation = {'': documentation.strip('\n\t ').replace('\\\n', '')} + + cls.checks = [_single_mako_expr(check, block_id) for check in (checks or [])] + + cls.parameters_data = parameters or [] + cls.inputs_data = inputs or [] + cls.outputs_data = outputs or [] + cls.extra_data = kwargs + + templates = templates or {} + cls.templates = MakoTemplates( + imports=templates.get('imports', ''), + make=templates.get('make', ''), + callbacks=templates.get('callbacks', []), + var_make=templates.get('var_make', ''), + ) + # todo: MakoTemplates.compile() to check for errors + + cls.value = _single_mako_expr(value, block_id) + + return cls + + +def _single_mako_expr(value, block_id): + match = re.match(r'\s*\$\{\s*(.*?)\s*\}\s*', str(value)) + if value and not match: + raise ValueError('{} is not a mako substitution in {}'.format(value, block_id)) + return match.group(1) if match else None |