We don't actually need to set a ContextOverride unless the ContextLoc and L
paren/brace/bracket are on different lines. Combined with the fact that we
only set them if the L and R parens/braces/brackets are on different lines
to, it guarantees there will be at most one override that's applicable on
any given line, which lets us simplify the logic somewhat.
- Rename several symbols to make it clearer whether the ranges they deal with
are open or closed.
- Add comments documenting the implementation of OutdentChecker::hasOutdent
- Fix a bug where code after a doc coment block of the '/**' style was being
indented 1 space.
- Fix IsInStringLiteral not being set if the indent target was in a string
segment of an interpolated multiline string.
- Update OutdentChecker::hasOutdent to propagate indent contexts from
parent parens/brackets/braces to child parens/brackets/braces that start
later in the same line (like FormatWalker already does). This changes the
braces in the example below to 'inherit' a ContextLoc from their parent
square brackets, which have a ContextLoc at 'foo'. This makes the whole
expression be correctly considered 'outdenting':
foo(a: "hello"
b: "hello")[x: {
print("hello")
}]
