8000 Initial golang implementation · JPEWdev/shacl2code@d89b841 · GitHub
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Initial golang implementation
The initial implementation of the golang binding generation
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‎src/shacl2code/lang/__init__.py

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from .jinja import JinjaRender # noqa: F401
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from .jsonschema import JsonSchemaRender # noqa: F401
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from .python import PythonRender # noqa: F401
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from .golang import GoLangRender # noqa: F401

‎src/shacl2code/lang/golang.py

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#
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# Copyright (c) 2024 Joshua Watt
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#
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# SPDX-License-Identifier: MIT
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from .common import JinjaTemplateRender
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from .lang import language, TEMPLATE_DIR
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from pathlib import Path
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import re
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GO_KEYWORDS = (
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"break",
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"default",
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"func",
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"interface",
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"select",
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"case",
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"defer",
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"go",
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"map",
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"struct",
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"chan",
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"else",
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"goto",
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"package",
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"switch",
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"const",
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"fallthrough",
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"if",
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"range",
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"type",
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"continue",
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"for",
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"import",
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"return",
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"var",
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)
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def varname(*name, public=True):
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new_name = []
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for n in name:
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for s in re.split(r"[^a-zA-Z0-9]+", n):
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if not s:
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continue
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new_name.append(s)
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if public:
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new_name = [s[0].upper() + s[1:] for s in new_name]
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else:
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new_name = [new_name[0][0].lower() + new_name[0][1:]] + [
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s[0].upper() + s[1:] for s in new_name[1:]
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]
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new_name = "".join(new_name)
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if new_name in GO_KEYWORDS:
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new_name = new_name + "_"
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return new_name
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def struct_name(cls):
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return varname(*cls.clsname) + "Object"
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def interface_name(cls):
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return varname(*cls.clsname)
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def class_type_var(cls):
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return varname(*cls.clsname, public=False) + "Type"
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def prop_name(prop):
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return varname(prop.varname, public=False)
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def prop_is_list(prop):
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return prop.max_count is None or prop.max_count != 1
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def prop_go_type(prop, classes):
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if prop.enum_values:
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return "string"
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if prop.class_id:
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intf = interface_name(classes.get(prop.class_id))
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return f"Ref[{intf}]"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#string":
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return "string"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#anyURI":
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return "string"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#integer":
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return "int"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#positiveInteger":
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return "int"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#nonNegativeInteger":
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return "int"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#boolean":
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return "bool"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#decimal":
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return "float64"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTime":
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return "time.Time"
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if prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTimeStamp":
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return "time.Time"
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raise Exception("Unknown data type " + prop.datatype) # pragma: no cover
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def prop_ctx_name(cls, prop):
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return varname(*cls.clsname, public=False) + varname(prop.varname) + "Context"
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def prop_decode_func(cls, prop, classes):
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if prop.enum_values:
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func = "DecodeIRI"
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elif prop.class_id:
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func = "Decode" + interface_name(classes.get(prop.class_id))
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#string":
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func = "DecodeString"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#anyURI":
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func = "DecodeString"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#integer":
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func = "DecodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#positiveInteger":
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func = "DecodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#nonNegativeInteger":
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func = "DecodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#boolean":
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func = "DecodeBoolean"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#decimal":
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func = "DecodeFloat"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTime":
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func = "DecodeDateTime"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTimeStamp":
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func = "DecodeDateTimeStamp"
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else:
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raise Exception("Unknown data type " + prop.datatype) # pragma: no cover
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if prop_is_list(prop):
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return f"DecodeList[{prop_go_type(prop, classes)}](value, path, {prop_ctx_name(cls, prop)}, {func}, obj.{varname(prop.varname)}())"
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return f"{func}(value, path, {prop_ctx_name(cls, prop)}, obj.{varname(prop.varname)}())"
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def prop_encode_func(cls, prop, classes):
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if prop.enum_values:
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func = "EncodeIRI"
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elif prop.class_id:
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func = "EncodeRef[" + interface_name(classes.get(prop.class_id)) + "]"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#string":
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func = "EncodeString"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#anyURI":
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func = "EncodeString"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#integer":
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func = "EncodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#positiveInteger":
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func = "EncodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#nonNegativeInteger":
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func = "EncodeInteger"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#boolean":
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func = "EncodeBoolean"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#decimal":
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func = "EncodeFloat"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTime":
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func = "EncodeDateTime"
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elif prop.datatype == "http://www.w3.org/2001/XMLSchema#dateTimeStamp":
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func = "EncodeDateTime"
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else:
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raise Exception("Unknown data type " + prop.datatype) # pragma: no cover
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if prop_is_list(prop):
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return f'EncodeList[{prop_go_type(prop, classes)}](self.{prop_name(prop)}.Get(), path.PushPath("{prop_name(prop)}"), {prop_ctx_name(cls, prop)}, state, {func})'
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return f'{func}(self.{prop_name(prop)}.Get(), path.PushPath("{prop_name(prop)}"), {prop_ctx_name(cls, prop)}, state)'
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@language("golang")
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class GoLangRender(JinjaTemplateRender):
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HELP = "Go Schema"
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FILES = (
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"classes.go",
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"decode.go",
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"encode.go",
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"errorhandler.go",
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"errors.go",
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"extensible.go",
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"linkstate.go",
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"listproperty.go",
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"optional.go",
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"path.go",
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"property.go",
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"ref.go",
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"reflistproperty.go",
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"refproperty.go",
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"shaclobject.go",
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"shaclobjectset.go",
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"shacltype.go",
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"util.go",
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"validator.go",
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)
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def __init__(self, args):
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super().__init__()
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self.__output = args.output
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self.__render_args = {
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"package": args.package,
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}
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@classmethod
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def get_arguments(cls, parser):
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parser.add_argument(
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"-p",
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"--package",
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help="Go Package Name",
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default="model",
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)
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parser.add_argument(
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"--output",
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"-o",
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type=Path,
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help="Output directory",
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required=True,
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)
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def get_outputs(self):
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t = TEMPLATE_DIR / "golang"
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for s in self.FILES:
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yield self.__output / s, t / (s + ".j2"), {}
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def get_extra_env(self):
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return {
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"varname": varname,
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"struct_name": struct_name,
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"interface_name": interface_name,
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"class_type_var": class_type_var,
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"prop_name": prop_name,
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"prop_is_list": prop_is_list,
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"prop_go_type": prop_go_type,
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"prop_ctx_name": prop_ctx_name,
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"prop_decode_func": prop_decode_func,
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"prop_encode_func": prop_encode_func,
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}
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def get_additional_render_args(self):
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return self.__render_args

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