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language: Change extern type syntax

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Use a '$' instead of a '.' to indicate a type provided in application
code.

The reason for the change is to have a consistent "extern" symbol that
isn't widely used elsewhere and isn't ambiguous in expressions.
This commit is contained in:
James Westman 2022-12-25 16:11:17 -06:00
parent be284de879
commit 0b402db4d5
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11 changed files with 41 additions and 13 deletions
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20
blueprintcompiler/language/types.py
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@ -31,33 +31,41 @@ class TypeName(AstNode):
UseIdent("class_name"),
],
[
".",
AnyOf("$", [".", UseLiteral("old_extern", True)]),
UseIdent("class_name"),
UseLiteral("ignore_gir", True),
UseLiteral("extern", True),
],
UseIdent("class_name"),
)
@validate()
def old_extern(self):
if self.tokens["old_extern"]:
raise UpgradeWarning(
"Use the '$' extern syntax introduced in blueprint 0.8.0",
actions=[CodeAction("Use '$' syntax", "$" + self.tokens["class_name"])],
)
@validate("class_name")
def type_exists(self):
if not self.tokens["ignore_gir"] and self.gir_ns is not None:
if not self.tokens["extern"] and self.gir_ns is not None:
self.root.gir.validate_type(
self.tokens["class_name"], self.tokens["namespace"]
)
@validate("namespace")
def gir_ns_exists(self):
if not self.tokens["ignore_gir"]:
if not self.tokens["extern"]:
self.root.gir.validate_ns(self.tokens["namespace"])
@property
def gir_ns(self):
if not self.tokens["ignore_gir"]:
if not self.tokens["extern"]:
return self.root.gir.namespaces.get(self.tokens["namespace"] or "Gtk")
@property
def gir_type(self) -> gir.GirType:
if self.tokens["class_name"] and not self.tokens["ignore_gir"]:
if self.tokens["class_name"] and not self.tokens["extern"]:
return self.root.gir.get_type(
self.tokens["class_name"], self.tokens["namespace"]
)