Fix a minor bug in the implementation of #sourceLocation when the
directive is succeeded by token that gives an error during lexing.
The error will be reported with the wrong location. This is because
lexing of the next token occurs immediately on consuming the last
token of the directive which is before the virtual file is set up to have
the location take effect.
Resolved by moving consumption of directives last token to the end
of the function.
known as #sourceLocation. #setline was an intermediate but never endorsed state.
Upgrade the migration diagnostics for SE-0066 and SE-0049 to be errors instead of warnings.
along with recent policy changes:
- For expression types that are not specifically handled, make sure to
produce a general "unused value" warning, catching a bunch of unused
values in the testsuite.
- For unused operator results, diagnose them as uses of the operator
instead of "calls".
- For calls, mutter the type of the result for greater specificity.
- For initializers, mutter the type of the initialized value.
- Look through OpenExistentialExpr's so we can handle protocol member
references propertly.
- Look through several other expressions so we handle @discardableResult
better.
Since ParserResult<T> required to have an AST node if there is no error and Parser::parseLineDirective()
does not return any node after successful parsing, we should not try to construct DeclResult.
Swift SVN r24755
Most tests were using %swift or similar substitutions, which did not
include the target triple and SDK. The driver was defaulting to the
host OS. Thus, we could not run the tests when the standard library was
not built for OS X.
Swift SVN r24504
This patch extends the syntax with a new #line directive that is inspired
by the homonymous CPP directive. It can be specified in all locations a #if
is legal (Stmt, Decl).
Semantics
---------
#line 42 "file.swift"
This makes diagnostics and debug information behave as if the subsequent
lines came from file.swift+42.
#line // without arguments
This switches back to the main source file and the switches back to the
normal line numbering. Any previous #line directives will result in gaps
in the main file.
Rationale
---------
LLDB and the REPL need this for making expressions that are entered into
the expression evaluator or REPL debugable. For more info see
<rdar://problem/17441710> Need #line directive or something similar so we can enhance the debugging of expressions and REPL
Also, I believe the stdlib would benefit from this and it would allow us
to get rid of the line-directive wrapper script.
Swift SVN r19384
