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https://gitlab.gnome.org/jwestman/blueprint-compiler.git
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135 lines
4.1 KiB
Python
135 lines
4.1 KiB
Python
# property_binding.py
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#
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# Copyright 2023 James Westman <james@jwestman.net>
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#
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# This file is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as
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# published by the Free Software Foundation; either version 3 of the
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# License, or (at your option) any later version.
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#
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# This file is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# SPDX-License-Identifier: LGPL-3.0-or-later
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from .common import *
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from .contexts import ValueTypeCtx
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from .gobject_object import Object
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from .gtkbuilder_template import Template
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class PropertyBindingFlag(AstNode):
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grammar = [
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AnyOf(
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UseExact("flag", "inverted"),
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UseExact("flag", "bidirectional"),
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UseExact("flag", "no-sync-create"),
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UseExact("flag", "sync-create"),
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)
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]
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@property
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def flag(self) -> str:
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return self.tokens["flag"]
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@validate()
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def sync_create(self):
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if self.flag == "sync-create":
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raise UpgradeWarning(
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"'sync-create' is now the default. Use 'no-sync-create' if this is not wanted.",
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actions=[CodeAction("remove 'sync-create'", "")],
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)
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class PropertyBinding(AstNode):
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grammar = AnyOf(
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[
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Keyword("bind-property"),
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UseIdent("source"),
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".",
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UseIdent("property"),
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ZeroOrMore(PropertyBindingFlag),
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],
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[
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Keyword("bind"),
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UseIdent("source"),
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".",
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UseIdent("property"),
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PropertyBindingFlag,
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ZeroOrMore(PropertyBindingFlag),
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],
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)
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@property
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def source(self) -> str:
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return self.tokens["source"]
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@property
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def source_obj(self) -> T.Optional[Object]:
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return self.root.objects_by_id.get(self.source)
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@property
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def property_name(self) -> str:
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return self.tokens["property"]
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@property
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def flags(self) -> T.List[PropertyBindingFlag]:
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return self.children[PropertyBindingFlag]
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@property
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def inverted(self) -> bool:
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return any([f.flag == "inverted" for f in self.flags])
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@property
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def bidirectional(self) -> bool:
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return any([f.flag == "bidirectional" for f in self.flags])
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@property
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def no_sync_create(self) -> bool:
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return any([f.flag == "no-sync-create" for f in self.flags])
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@validate("source")
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def source_object_exists(self) -> None:
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if self.source_obj is None:
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raise CompileError(
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f"Could not find object with ID {self.source}",
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did_you_mean=(self.source, self.root.objects_by_id.keys()),
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)
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@validate("property")
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def property_exists(self) -> None:
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if self.source_obj is None:
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return
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gir_class = self.source_obj.gir_class
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if gir_class is None or gir_class.incomplete:
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# Objects that we have no gir data on should not be validated
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# This happens for classes defined by the app itself
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return
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if (
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isinstance(gir_class, gir.Class)
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and gir_class.properties.get(self.property_name) is None
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):
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raise CompileError(
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f"{gir_class.full_name} does not have a property called {self.property_name}"
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)
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@validate("bind-property")
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def not_bindable(self) -> None:
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if binding_error := self.context[ValueTypeCtx].binding_error:
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raise binding_error
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@validate("bind")
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def old_bind(self):
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if self.tokens["bind"]:
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raise UpgradeWarning(
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"Use 'bind-property', introduced in blueprint 0.8.0, to use binding flags",
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actions=[CodeAction("Use 'bind-property'", "bind-property")],
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)
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