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Change the way values work

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Change the parsing for values to make them more reusable, in particular
for when I implement extensions.
This commit is contained in:
James Westman 2023-01-12 13:19:15 -06:00
parent 6938267952
commit 1df46b5a06
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GPG key ID: CE2DBA0ADB654EA6
30 changed files with 707 additions and 291 deletions
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105
blueprintcompiler/language/gobject_property.py
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@ -17,51 +17,28 @@
#
# SPDX-License-Identifier: LGPL-3.0-or-later
from dataclasses import dataclass
from .expression import ExprChain
from .gobject_object import Object
from .gtkbuilder_template import Template
from .values import Value, TranslatedStringValue
from .values import Value, Translated
from .common import *
from .contexts import ValueTypeCtx
from .property_binding import PropertyBinding
from .binding import Binding
class Property(AstNode):
grammar = AnyOf(
[
UseIdent("name"),
":",
Keyword("bind"),
UseIdent("bind_source"),
".",
UseIdent("bind_property"),
ZeroOrMore(
AnyOf(
["no-sync-create", UseLiteral("no_sync_create", True)],
["inverted", UseLiteral("inverted", True)],
["bidirectional", UseLiteral("bidirectional", True)],
Match("sync-create").warn(
"sync-create is deprecated in favor of no-sync-create"
),
)
),
";",
],
Statement(
UseIdent("name"),
UseLiteral("binding", True),
":",
"bind",
ExprChain,
),
Statement(
UseIdent("name"),
":",
AnyOf(
Object,
VALUE_HOOKS,
).expected("a value"),
),
)
grammar = [UseIdent("name"), ":", Value, ";"]
@property
def name(self) -> str:
return self.tokens["name"]
@property
def value(self) -> Value:
return self.children[0]
@property
def gir_class(self):
@ -72,10 +49,29 @@ class Property(AstNode):
if self.gir_class is not None and not isinstance(self.gir_class, UncheckedType):
return self.gir_class.properties.get(self.tokens["name"])
@property
def value_type(self):
@context(ValueTypeCtx)
def value_type(self) -> ValueTypeCtx:
if (
(
isinstance(self.value.child, PropertyBinding)
or isinstance(self.value.child, Binding)
)
and self.gir_property is not None
and self.gir_property.construct_only
):
binding_error = CompileError(
f"{self.gir_property.full_name} can't be bound because it is construct-only",
hints=["construct-only properties may only be set to a static value"],
)
else:
binding_error = None
if self.gir_property is not None:
return self.gir_property.type
type = self.gir_property.type
else:
type = None
return ValueTypeCtx(type, binding_error)
@validate("name")
def property_exists(self):
@ -95,40 +91,11 @@ class Property(AstNode):
did_you_mean=(self.tokens["name"], self.gir_class.properties.keys()),
)
@validate("bind")
def property_bindable(self):
if (
self.tokens["bind"]
and self.gir_property is not None
and self.gir_property.construct_only
):
raise CompileError(
f"{self.gir_property.full_name} can't be bound because it is construct-only",
hints=["construct-only properties may only be set to a static value"],
)
@validate("name")
def property_writable(self):
if self.gir_property is not None and not self.gir_property.writable:
raise CompileError(f"{self.gir_property.full_name} is not writable")
@validate()
def obj_property_type(self):
if len(self.children[Object]) == 0:
return
object = self.children[Object][0]
type = self.value_type
if (
object
and type
and object.gir_class
and not object.gir_class.assignable_to(type)
):
raise CompileError(
f"Cannot assign {object.gir_class.full_name} to {type.full_name}"
)
@validate("name")
def unique_in_parent(self):
self.validate_unique_in_parent(