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"""Generate language specific loaders for a particular SALAD schema."""
import sys
from collections.abc import MutableMapping, MutableSequence
from io import TextIOWrapper
from typing import Any, Final, Optional, TextIO, Union
from urllib.parse import urlsplit
from . import schema
from .codegen_base import CodeGenBase
from .cpp_codegen import CppCodeGen
from .dlang_codegen import DlangCodeGen
from .dotnet_codegen import DotNetCodeGen
from .exceptions import SchemaSaladException
from .java_codegen import JavaCodeGen
from .python_codegen import PythonCodeGen
from .ref_resolver import Loader
from .schema import shortname
from .typescript_codegen import TypeScriptCodeGen
from .utils import aslist
FIELD_SORT_ORDER: Final = ["class", "id", "name"]
def codegen(
lang: str,
i: list[dict[str, str]],
schema_metadata: dict[str, Any],
loader: Loader,
target: Optional[str] = None,
examples: Optional[str] = None,
package: Optional[str] = None,
copyright: Optional[str] = None,
spdx_copyright_text: Optional[list[str]] = None,
spdx_license_identifier: Optional[str] = None,
parser_info: Optional[str] = None,
) -> None:
"""Generate classes with loaders for the given Schema Salad description."""
j = schema.extend_and_specialize(i, loader)
gen: Optional[CodeGenBase] = None
base = schema_metadata.get("$base", schema_metadata.get("id"))
# ``urlsplit`` decides whether to return an encoded result based
# on the object type. To ensure the code behaves the same for Py
# 3.6+, we enforce that the input value is of type ``str``.
if base is None:
base = ""
sp = urlsplit(base)
pkg = (
package
if package
else ".".join(list(reversed(sp.netloc.split("."))) + sp.path.strip("/").split("/"))
)
info = parser_info or pkg
salad_version = schema_metadata.get("saladVersion", "v1.1")
if lang in {"python", "cpp", "dlang"}:
if target:
dest: Union[TextIOWrapper, TextIO] = open(target, mode="w", encoding="utf-8")
else:
dest = sys.stdout
if lang == "cpp":
gen = CppCodeGen(
base,
dest,
examples,
pkg,
copyright,
spdx_copyright_text,
spdx_license_identifier,
)
gen.parse(j)
return
if lang == "dlang":
gen = DlangCodeGen(
base,
dest,
examples,
pkg,
copyright,
info,
salad_version,
)
gen.parse(j)
return
gen = PythonCodeGen(
dest, copyright=copyright, parser_info=info, salad_version=salad_version
)
elif lang == "java":
gen = JavaCodeGen(
base,
target=target,
examples=examples,
package=pkg,
copyright=copyright,
)
elif lang == "typescript":
gen = TypeScriptCodeGen(base, target=target, package=pkg, examples=examples)
elif lang == "dotnet":
gen = DotNetCodeGen(base, target=target, package=pkg, examples=examples)
else:
raise SchemaSaladException(f"Unsupported code generation language {lang!r}")
gen.prologue()
document_roots = []
for rec in j:
if rec["type"] in ("enum", "map", "record", "union"):
jld = rec.get("jsonldPredicate")
if isinstance(jld, MutableMapping):
gen.type_loader(rec, jld.get("_container"), jld.get("noLinkCheck"))
else:
gen.type_loader(rec)
gen.add_vocab(shortname(rec["name"]), rec["name"])
for rec in j:
if rec["type"] == "enum":
for symbol in rec["symbols"]:
gen.add_vocab(shortname(symbol), symbol)
if rec["type"] == "record":
if rec.get("documentRoot"):
document_roots.append(rec["name"])
field_names = []
optional_fields = set()
for field in rec.get("fields", []):
field_name = shortname(field["name"])
field_names.append(field_name)
tp = field["type"]
if isinstance(tp, MutableSequence) and tp[0] == "https://w3id.org/cwl/salad#null":
optional_fields.add(field_name)
idfield = ""
for field in rec.get("fields", []):
if field.get("jsonldPredicate") == "@id":
idfield = field.get("name")
gen.begin_class(
rec["name"],
aslist(rec.get("extends", [])),
rec.get("doc", ""),
rec.get("abstract", False),
field_names,
idfield,
optional_fields,
)
gen.add_vocab(shortname(rec["name"]), rec["name"])
sorted_fields = sorted(
rec.get("fields", []),
key=lambda i: (
FIELD_SORT_ORDER.index(i["name"].split("/")[-1])
if i["name"].split("/")[-1] in FIELD_SORT_ORDER
else 100
),
)
for field in sorted_fields:
if field.get("jsonldPredicate") == "@id":
subscope = field.get("subscope")
fieldpred = field["name"]
optional = bool("https://w3id.org/cwl/salad#null" in field["type"])
uri_loader = gen.uri_loader(gen.type_loader(field["type"]), True, False, None)
gen.declare_id_field(
fieldpred,
uri_loader,
field.get("doc"),
optional,
)
break
for field in sorted_fields:
optional = bool("https://w3id.org/cwl/salad#null" in field["type"])
jld = field.get("jsonldPredicate")
fieldpred = field["name"]
subscope = None
if isinstance(jld, MutableMapping):
type_loader = gen.type_loader(
field["type"], jld.get("_container"), jld.get("noLinkCheck")
)
ref_scope = jld.get("refScope")
subscope = jld.get("subscope")
if jld.get("typeDSL"):
type_loader = gen.typedsl_loader(type_loader, ref_scope)
elif jld.get("secondaryFilesDSL"):
type_loader = gen.secondaryfilesdsl_loader(type_loader)
elif jld.get("_type") == "@id":
type_loader = gen.uri_loader(
type_loader,
jld.get("identity", False),
False,
ref_scope,
jld.get("noLinkCheck"),
)
elif jld.get("_type") == "@vocab":
type_loader = gen.uri_loader(
type_loader, False, True, ref_scope, jld.get("noLinkCheck")
)
map_subject = jld.get("mapSubject")
if map_subject:
type_loader = gen.idmap_loader(
field["name"],
type_loader,
map_subject,
jld.get("mapPredicate"),
)
if "_id" in jld and jld["_id"][0] != "@":
fieldpred = jld["_id"]
else:
type_loader = gen.type_loader(field["type"])
if jld == "@id":
continue
gen.declare_field(fieldpred, type_loader, field.get("doc"), optional, subscope)
gen.end_class(rec["name"], field_names)
root_type = list(document_roots)
root_type.append({"type": "array", "items": document_roots})
gen.epilogue(gen.type_loader(root_type))
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