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8f9de81e24
This allows them to be referenced before they are filled, helping avoid circular dependencies.
70 lines
2.3 KiB
Python
70 lines
2.3 KiB
Python
# imports.py
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#
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# Copyright 2022 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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class GtkDirective(AstNode):
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grammar = Statement(
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Match("using").err("File must start with a \"using Gtk\" directive (e.g. `using Gtk 4.0;`)"),
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Match("Gtk").err("File must start with a \"using Gtk\" directive (e.g. `using Gtk 4.0;`)"),
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UseNumberText("version").expected("a version number for GTK"),
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)
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@validate("version")
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def gtk_version(self):
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if self.tokens["version"] not in ["4.0"]:
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err = CompileError("Only GTK 4 is supported")
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if self.tokens["version"].startswith("4"):
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err.hint("Expected the GIR version, not an exact version number. Use `using Gtk 4.0;`.")
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else:
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err.hint("Expected `using Gtk 4.0;`")
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raise err
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@property
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def gir_namespace(self):
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return gir.get_namespace("Gtk", self.tokens["version"])
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def emit_xml(self, xml: XmlEmitter):
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xml.put_self_closing("requires", lib="gtk", version=self.tokens["version"])
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class Import(AstNode):
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grammar = Statement(
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"using",
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UseIdent("namespace").expected("a GIR namespace"),
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UseNumberText("version").expected("a version number"),
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)
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@validate("namespace", "version")
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def namespace_exists(self):
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gir.get_namespace(self.tokens["namespace"], self.tokens["version"])
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@property
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def gir_namespace(self):
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try:
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return gir.get_namespace(self.tokens["namespace"], self.tokens["version"])
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except CompileError:
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return None
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def emit_xml(self, xml):
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pass
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