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ca3f025011
This adds a parser capable of handling the XDR protocol files. The parsing grammar requirements are detailed in https://www.rfc-editor.org/rfc/rfc4506#section-6.3 Reviewed-by: Michal Privoznik <mprivozn@redhat.com> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
92 lines
2.4 KiB
Python
92 lines
2.4 KiB
Python
# SPDX-License-Identifier: LGPL-2.1-or-later
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from pathlib import Path
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from rpcgen.ast import (
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XDRSpecification,
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XDRDefinitionConstant,
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XDRDefinitionEnum,
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XDRDefinitionUnion,
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XDRDefinitionStruct,
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XDRDeclarationScalar,
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XDRDeclarationVariableArray,
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XDREnumValue,
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XDREnumBody,
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XDRStructBody,
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XDRUnionCase,
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XDRUnionBody,
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XDRTypeCustom,
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XDRTypeVoid,
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XDRTypeString,
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XDRTypeOpaque,
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)
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from rpcgen.parser import XDRParser
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def test_parser():
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p = Path(Path(__file__).parent, "simple.x")
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with p.open("r") as fp:
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parser = XDRParser(fp)
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got = parser.parse()
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enum = XDRDefinitionEnum(
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"filekind",
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XDREnumBody(
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[
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XDREnumValue("TEXT", "0"),
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XDREnumValue("DATA", "1"),
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XDREnumValue("EXEC", "2"),
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],
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),
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)
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union = XDRDefinitionUnion(
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"filetype",
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XDRUnionBody(
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XDRDeclarationScalar(XDRTypeCustom("filekind", enum), "kind"),
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[
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XDRUnionCase("TEXT", XDRDeclarationScalar(XDRTypeVoid(), None)),
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XDRUnionCase(
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"DATA",
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XDRDeclarationVariableArray(
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XDRTypeString(), "creator", "MAXNAMELEN"
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),
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),
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XDRUnionCase(
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"EXEC",
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XDRDeclarationVariableArray(
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XDRTypeString(), "interpretor", "MAXNAMELEN"
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),
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),
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],
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None,
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),
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)
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struct = XDRDefinitionStruct(
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"file",
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XDRStructBody(
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[
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XDRDeclarationVariableArray(XDRTypeString(), "filename", "MAXNAMELEN"),
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XDRDeclarationScalar(XDRTypeCustom("filetype", union), "type"),
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XDRDeclarationVariableArray(XDRTypeString(), "owner", "MAXUSERNAME"),
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XDRDeclarationVariableArray(XDRTypeOpaque(), "data", "MAXFILELEN"),
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]
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),
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)
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want = XDRSpecification()
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want.definitions.extend(
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[
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XDRDefinitionConstant("MAXUSERNAME", "32"),
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XDRDefinitionConstant("MAXFILELEN", "65535"),
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XDRDefinitionConstant("MAXNAMELEN", "255"),
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enum,
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union,
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struct,
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]
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)
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assert str(got) == str(want)
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