def parse_document(
txt: str, version: Optional[str] = None, uri: str = "", imported: bool = False
) -> D.Document:
if version is None:
# for now assume the version is 1.0 if the first line is "version <number>"
# otherwise draft-2
version = "draft-2"
for line in txt.split("\n"):
line = line.strip()
if line and line[0] != "#":
if line.startswith("version ") and line[8].isdigit():
version = "1.0"
break
if not txt.strip():
return D.Document(
SourcePosition(filename=uri, line=0, column=0, end_line=0, end_column=0),
[],
[],
None,
imported,
)
try:
return _DocTransformer(uri, imported).transform(parse(txt, "document", version))
except lark.exceptions.UnexpectedCharacters as exn:
raise Err.ParserError(uri if uri != "" else "(in buffer)") from exn
except lark.exceptions.UnexpectedToken as exn:
raise Err.ParserError(uri if uri != "" else "(in buffer)") from exn
def document(self, items, meta):
imports = []
structs = {}
tasks = []
workflow = None
for item in items:
if isinstance(item, D.Task):
tasks.append(item)
elif isinstance(item, D.Workflow):
if workflow is not None:
raise Err.MultipleDefinitions(
sp(self.filename, meta),
"Document has multiple workflows")
workflow = item
elif isinstance(item, D.StructTypeDef):
if item.name in structs:
raise Err.MultipleDefinitions(
sp(self.filename, meta),
"multiple structs named " + item.name)
structs[item.name] = item
elif isinstance(item, lark.Tree) and item.data == "version":
pass
elif isinstance(item, D.DocImport):
imports.append(item)
else:
assert False
return D.Document(sp(self.filename, meta), imports, structs, tasks,
workflow)
def document(self, items, meta):
imports = []
tasks = []
workflow = None
for item in items:
if isinstance(item, D.Task):
tasks.append(item)
elif isinstance(item, D.Workflow):
if workflow is not None:
raise Err.MultipleDefinitions(
sp(self.filename, meta), "Document has multiple workflows"
)
workflow = item
elif isinstance(item, lark.Tree) and item.data == "version":
pass
elif isinstance(item, dict) and "import" in item:
imports.append(item["import"])
else:
assert False
return D.Document(sp(self.filename, meta), imports, tasks, workflow, self.imported)
def parse_document(txt: str,
version: Optional[str] = None,
uri: str = "") -> D.Document:
if version is None:
# for now assume the version is 1.0 if the first line is "version <number>"
# otherwise draft-2
version = "draft-2"
for line in txt.split("\n"):
line = line.strip()
if line and line[0] != "#":
if line.startswith("version ") and line[8].isdigit():
version = "1.0"
break
if not txt.strip():
return D.Document(
SourcePosition(filename=uri,
line=0,
column=0,
end_line=0,
end_column=0),
[],
{},
[],
None,
)
try:
return _DocTransformer(uri).transform(parse(txt, "document", version))
except lark.exceptions.UnexpectedInput as exn:
pos = SourcePosition(
filename=(uri if uri != "" else "(buffer)"),
line=getattr(exn, "line", "?"),
column=getattr(exn, "column", "?"),
end_line=getattr(exn, "line", "?"),
end_column=getattr(exn, "column", "?"),
)
raise Err.SyntaxError(pos, str(exn)) from None
except lark.exceptions.VisitError as exn:
raise exn.__context__