Optimize for libSyntax parsing.
The new 'parseListSyntax()' receives a vector storage, passes element
builder to the callback for populating the elements, then automatically
parses trailing commas. Also, it performs automatic recovery if the
element has an error (e.g. Skip until ',' or ')').
- Utilize ignoreToken() to skip tokens while keeping them in syntax tree
- SyntaxParsedResult now holds ParsedRawSyntaxNode and ParserStatus
- Simplify migration support for 'TypeName[]' type
- Use builder for generic argument clause parsing
DelayedParsingCallbacks only had one implementation, for code
completion, which is only used to determine which bodies to skip and
which to delay. Inline that logic into the parser's delay logic and
remove DelayedParsingCallbacks entirely.
Rework the lazy function body parsing mechanism to use the
request-evaluator, so that asking for the body of a function will
initiate parsing. Clean up a number of callers to
AbstractFunctionDecl::getBody() that don't actually need the body, so
we don't perform unnecessary parsing.
This change does not delay parsing of function bodies in the general
case; rather, it sets up the infrastructure to always delay parsing of
function bodies.
Rework the lazy function body parsing mechanism to use the
request-evaluator, so that asking for the body of a function will
initiate parsing. Clean up a number of callers to
AbstractFunctionDecl::getBody() that don't actually need the body, so
we don't perform unnecessary parsing.
This change does not delay parsing of function bodies in the general
case; rather, it sets up the infrastructure to always delay parsing of
function bodies.
Lazy parsing for the members of nominal types and extensions depends
only on information already present in
`IterableDeclContext`. Eliminate the use of PersistentParserState as
an intermediary and have the member-parsing request construct a new
`Parser` instance itself to handle parsing. Make this possible even
for ill-formed nominal types/extensions to simplify the code path.
Eliminate `LazyMemberParser` and all of its uses, because it was only
present for lazy member parsing, which no longer needs it.
