Enhance fixItRemove() to be a bit more careful about what whitespace it leaves around: if the thing it is removing has leading and trailing whitespace already, this nukes an extra space to avoid leaving double spaces or incorrectly indented results.
This includes an extra fix for looking off the start of a buffer, which extractText doesn't and can't handle.
This fixes <rdar://problem/21045509> Fixit deletes 'let' from non-binding 'if case let' statements, but leaves an extra space
Swift SVN r29449
if the thing it is removing has leading and trailing whitespace already, this nukes
an extra space to avoid leaving double spaces or incorrectly indented results. This
fixes <rdar://problem/21045509> Fixit deletes 'let' from non-binding 'if case let' statements, but leaves an extra space
Swift SVN r29419
getTypeOfIndependentSubExpression() might replace some values in the
given expression with OpaqueValueExprs, but if the type checker
decided to insert the corresponding OpenExistentialExpr at the top
level, the AST would now be in an inconsistent state, since
getTypeOfIndependentSubExpression() does not return a new expression
to the caller.
Ideally we would separate out type checking from expression rewriting
so that the latter is only performed when we know the expression
type checks, but that is a bigger project. For now, erase open
existentials after re-typechecking a sub-expression.
Fixes <rdar://problem/20598568>.
Swift SVN r29400
If 'x.init' appears as a member reference other than 'self.init' or 'super.init' within an initializer, treat it as a regular static member lookup for 'init' members. This allows a more explicit syntax for dynamic initializations; 'self.someMetatype()' looks too much like it's invoking a method. It also allows for partial applications of initializers using 'someMetatype.init' (though this needs some SILGen fixes, coming up next). While we're in the neighborhood, do some other correctness and QoI fixes:
- Only lookup initializers as members of metatypes, not instances, and add a fixit (instead of crashing) to insert '.dynamicType' if the initializer is found on an instance.
- Make it so that constructing a class-constrained archetype type correctly requires a 'required' or protocol initializer.
- Warn on unused initializer results. This seems to me like just the right thing to do, but is also a small guard against the fact that 'self.init' is now valid in a static method, but produces a newly-constructed value instead of delegating initialization (and evaluating to void).
Swift SVN r29344
initializer has been type-checked, rather than a bit for the entire
PatternBindingDecl.
<rdar://problem/21057425> Crash while compiling attached test-app.
Swift SVN r29049
We no do not require "self." for closures capturing self in static/class methods.
While we do actually capture the metatype more than we should (rdar://21030087),
this doesn't matter to the developer, since this capture cannot cause a cycle
in the reference graph that they should have to reason about.
Swift SVN r28804
Allow API providers to use escaped characters in the messages of @available()
attributes. For example, for a reference to a declaration annotated with:
@available(*, unavailable, message="use print(\"\")")
public func println() {
...
}
the message displayed to the user will be:
'println() is unavailable: use print("")'.
This also supports unicode escapes (e.g. \u{1F43C}).
A complication is that AvailableAttrs imported from clang already have their
messages unescaped, so this patch keeps track of whether an availability
attribute came from clang and, if so, does not unescape the message again when
emitting the diagnostic. We could avoid this extra book-keeping by immediately
unescaping Swift messages during parsing, keeping them in an unescaped
canonical form, and then escaping them in ASTPrinter when we print the
attributes. rdar://problem/20985357 tracks keeping AvailableAttrs messages in
a canonical form.
rdar://problem/20789407
Swift SVN r28658
If a 'var' pattern binding contains multiple vardecls and some are mutated
but others aren't, don't warn about the non-mutated ones as being potential
candidates for 'let's since there is no great way to rewrite the code to
silence the warning.
Swift SVN r28629
This reverts revision r28480, after mailing list discussion it is
agreed that this is a bad idea.
Note that a test had to be updated adding a new expected warning.
Swift SVN r28515
This came out of today's language review meeting.
The intent is to match #available with the attribute
that describes availability.
This is a divergence from Objective-C.
Swift SVN r28484
While we don't support classes that close over values in the outer
scope just yet, make the analysis handle it, to avoid emitting
spurious diagnostics about unused values.
For example, this would formerly daignose that 'x' was both unused
and that the closure was invalid:
func brigand() {
let x = 0
class Sword {
func attack() {
print(x)
}
}
}
Swift SVN r28480
<rdar://problem/15975935> warning that you can use 'let' not 'var'
<rdar://problem/18876585> Compiler should warn me if I set a parameter as 'var' but never modify it
<rdar://problem/17224539> QoI: warn about unused variables
This uses a simple pass in MiscDiagnostics that walks the body of an
AbstractFunctionDecl. This means that it doesn't warn about unused properties (etc),
but it captures a vast majority of the cases.
It also does not warn about unused parameters (as a policy decision) because it is too noisy,
there are a variety of other refinements that could be done as well, thoughts welcome.
Swift SVN r28412
within accessors.
Improves source fidelity and fixes problems with error handling
(because TryExpr and ForceTryExpr are IdentityExprs).
Swift SVN r28298
This fixes <rdar://problem/20494437> SILGen crash handling default arguments
again, and includes a fix for MiscDiagnostics to look through the generated
TupleShuffleExprs in @noescape processing (which tripped up XCTest).
This fixes <rdar://problem/16860940> QoI: Strict keyword arguments loses type sugar in calls
where we'd lose some type sugar.
This fixes sanity in the ASTs: ScalarToTupleExpr now always has consistent
types between its argument and result, so we can turn on AST Verification of it.
Swift SVN r27827
Allow an unversioned 'deprecated' attribute to specify unconditional
deprecation of an API, e.g.,
@availability(*, deprecated, message="sorry")
func foo() { }
Also support platform-specific deprecation, e.g.,
@availability(iOS, deprecated, message="don't use this on iOS")
func bar() { }
Addresses rdar://problem/20562871.
Swift SVN r27355
Allow an unversioned 'deprecated' attribute to specify unconditional
deprecation of an API, e.g.,
@availability(*, deprecated, message="sorry")
func foo() { }
Also support platform-specific deprecation, e.g.,
@availability(iOS, deprecated, message="don't use this on iOS")
func bar() { }
Addresses rdar://problem/20562871.
Swift SVN r27339
Enable checking for uses of potentially unavailable APIs. There is
a frontend option to disable it: -disable-availability-checking.
This commit updates the SDK overlays with @availability() annotations for the
declarations where the overlay refers to potentially unavailable APIs. It also changes
several tests that refer to potentially unavailable APIs to use either #available()
or @availability annotations.
Swift SVN r27272
Remove the suppression of deprecation and potential unavailability diagnostics in
synthesized functions. We still suppress some explicit unavailability diagnostics -- those
in synthesized functions in synthesized functions that are lexically contained in
declarations that are themselves annotated as unavailable. For these cases, the right
solution <rdar://problem/20491640> is to not synthesize the bodies of these functions in
the first place.
rdar://problem/20024980
Swift SVN r27203
Suppress diagnostics about references to unavailable declarations when all
of the following conditions are met:
(1) the reference is in synthesized code;
(2) the reference is in a synthesized method; and
(3) the reference is inside a declaration marked as unavailable.
This, combined with prior work to infer availability annotations for synthesized
methods should eliminate the spurious diagnostics we have seen (e.g.,
rdar://problem/20154926) for references to unavailable types without the hammer
of suppressing all references to unavailable declarations in synthesized
functions. The right thing to do here is to not synthesize the bodies of these
functions in the first place. I've filed <rdar://problem/20491640> to track
this.
We will continue to emit an error for references to unavailable declarations
in non-implicit code, even if the reference is inside a declaration marked
unavailable.
Swift SVN r27197
A common operation for availability checking is determining whether some
lexically enclosing declaration matches a condition. This commit factors
out that logic. NFC.
Swift SVN r27181
This is the new and improved version of
__attribute__((annotate("swift1_unavailable"))), with the "improved" being
specifically that the 'availability' attribute supports a message.
This requires a corresponding Clang commit.
Swift side of rdar://problem/18768673.
Swift SVN r27053
We now disregard deprecation warnings if the reference to a deprecated symbol is lexically
contained in a declaration that is itself deprecated on all deployment targets.
Swift SVN r26693
This flag enables checking of availability (deprecation, explicit unavailability,
and potential unavailability) in synthesized functions. The flag will go away once this
checking is fully staged in.
Swift SVN r26624
Currently a no-op, but effective access for entities within the current
module will soon need to take testability into account. This declaration:
internal func foo() {}
has a formal access of 'internal', but an effective access of 'public' if
we're in a testable mode.
Part of rdar://problem/17732115 (testability)
Swift SVN r26472
This commit suppresses errors for references to unavailable symbols inside
implicit functions.
This is a quick hack to fix a hit-listed radar <rdar://problem/20007266> where
the compiler was emitting spurious errors for enums explicitly marked
unavailable in Objective-C and whose nil literal conformance is synthesized by
the importer. These errors could occur when user code made no apparent reference
to the enum in question and instead only referred to an imported class that
itself referred to the enum in a method signature.
We will need to do something systematic about availability and deprecation
diagnostics in synthesized code. In particular, we should make sure that:
(1) we never emit code that references explicitly unavailable symbols;
(2) that the user never gets an error about symbol that they did not explicitly type; and
(3) that errors can dealt with via the appropriate availability check or annotation. I'm
tracking this with radar rdar://problem/20024980.
rdar://problem/20007266
Swift SVN r26251
Having semantic checking in type validation introduces the potential for more recursion, triggering crashes. By moving this semantic restriction out to a later stage, we make it more robust. Fixes 6 compiler crashers, although it regressed one compiler crasher that hits a different known issue (assertions in addGenericParameters when we have multiple parameters at the same depth).
Swift SVN r26226
- Rename getParentPattern() -> getParentPatternBinding(), since
it returns the pattern binding, not the pattern.
- Introduce new getParentPattern()/getParentInitializer() methods,
covering the most common uses of getParentPatternBinding().
NFC.
Swift SVN r26175
conjunction with .fixItInsert(). As such, introduce a helper named
.fixItInsertAfter() that does what we all want. Adopt this in various
places around the compiler. NFC.
Swift SVN r26147
We now suggest up to three Fix-Its for each reference to a potentially
unavailable symbol: one to wrap the reference in an if #os(...) { ... }
guard (if possible), one to add an @availability attribute to an enclosing
property or method (if possible), and one to add an @availability attribute
to an enclosing class/struct/extension, etc. or global function.
The goal here is not to infer the "best" Fix-It but rather to ensure
discoverability of #os() and @availability attributes. We want the user, when
faced with an availability diagnostic, to be aware of the tools in her toolbox
to deal with it.
This is still missing QoI improvements, including Fix-Its to update
existing @availability attributes and more precise wording in diagnostics
(e.g, "initializer" instead of function, "class" instead of "type"). These
improvements will come in later commits.
Swift SVN r26073
Turns out llvm::DataLayoutPass is used in other places, so the bots are still unhappy.
Re-applying the original change so we can fix the problem holistically.
Swift SVN r25761
This is breaking the testing bot because DataLayoutPass was just removed from LLVM trunk.
Chris is the best one to fix this change, but we need to get the bots green.
Swift SVN r25760
- Have Sema, not SILGen decide if a vardecl can be captured by address
instead of by-box. This is a non-local property that is best computed
during capture set formation. Sema captures this as a bit on the new
CapturedValue entry.
- Rework some diagnostic emission to centralize a class of noescape
diagnostics in capture set calculation. Previously, funcdecl closures
produced their diagnostics there, but ClosureExprs produced them in
MiscDiagnostics (NFC for this part).
This fixes <rdar://problem/19981118> Swift 1.2 beta 2: Closures nested in @noescape closures copy, rather than reference, captured vars.
Swift SVN r25759
when computing the list. This simplifies getLocalCaptures to *just* filter out
global captures, and paves the way for other enhancements. NFC.
Swift SVN r25739
This commit suppresses deprecation warnings for references to deprecated symbols
by climbing the DeclContext hierarchy to determine if the warning location is
inside an implicit function.
This is a quick fix to get rid of spurious warnings for deprecated enums whose
nil literal conformance is synthesized by the importer. These warnings would
occur even when user code made no apparent reference to the enum in question and
instead only referred to an imported class that itself referred to the enum in a
method signature. This quick fix intentionally drops some valid warnings
(for example, for a synthesized call to a deprecated initializer in a super
class). rdar://problem/20024980 tracks adding these special purpose warnings
back.
rdar://problem/20007266
Swift SVN r25720
