We want to support three configurations:
* Debug (-Onone, -O0): user assertions, library precondition checks, runtime
checks enabled and verbose.
* Release (-O): library precondition checks, runtime checks enabled but succinct
(trap).
* Fast (-Ofast): all checks off.
The _isFast predicate will allow to write standard library functions to support
this plan. This commit changes fatal() to differentiate between the three modes.
Support for rdar://16477198
Swift SVN r17697
Parse-only is a hot path; keep the semantics for it separate from normal parsing, otherwise it is very
easy to introduce something expensive without checking for Invocation.getParseOnly().
Also cleans up a bit CompilerInstance::performParse() as well.
Swift SVN r17596
When importing an Objective-C init method or factory method into an
initializer, if the first camelCase word of the first argument name
starts with "with", drop the "with". This means that
-initWithRed:green:blue:alpha:
will get imported into Swift as
init(red:green:blue:alpha:)
as will
+colorWithRed:green:blue:alpha:
This is <rdar://problem/16795899>, hidden behind the
-implicit-objc-with flag.
Swift SVN r17271
THIS IS NOT READY FOR USE YET.
The new plan for mixed-source non-framework targets is that the Swift
compiler will import an Objective-C header directly, and treat the decls
and imports in that header as explicitly visible to the entire target.
This means users don't have to modularize their headers before bringing
them into Swift.
This commit adds the option and introduces the "imported headers" module
as an implicit import for the source files being compiled. It also directs
the Clang importer to process the given header (using #import, so that it
won't somehow get included twice) and watches for any module imports that
occur as a result of reading that header.
Still to come: import of decls within the header (not within any module),
and proper serialization of cross-references to the header and its imports.
Part of <rdar://problem/16702101>
Swift SVN r17218
Another baby step toward <rdar://problem/14462349>, made even more
tepid by the fact that I've quarantined this behind a new flag,
-strict-keyword-arguments. Enforcing this breaks a lot of code, so I'd
like to bring up the new model on the side (with good diagnostics that
include Fix-Its) before trolling through the entire standard library
and testsuite to fix violations of these new rules.
Swift SVN r17143
Since LLDB is taking over as the REPL for Swift, we eventually want "swift"
and "swift -repl" to invoke "lldb --repl" rather than the frontend. However,
we only want to do this if the LLDB that's present is related to the Swift
that's present -- we don't want to invoke some random LLDB on the system
or in some other Xcode installation. Therefore, Swift searches for LLDB--
first next to the driver, then in the usr/bin/ outside of a toolchain--
before choosing to use it.
If the user just passes -repl and an LLDB is not found relative to the
driver, the existing "integrated" REPL will be launched instead.*
If the user passes -lldb-repl and an LLDB is not found relative to the
driver, one from the user's PATH will be chosen (like the linker).
The user can also pass -integrated-repl to get the existing behavior.
"swift -frontend -repl" always uses the integrated REPL.
* Since LLDB's not quite ready to be the REPL yet, "swift -repl" still
invokes the integrated REPL. "swift -repl -experimental-prefer-lldb" tests
the new behavior; this option will become the default (and the flag removed)
in <rdar://problem/16776719>.
<rdar://problem/16776705>
Swift SVN r17134
This option implicitly imports the Clang module with the same name as the
module being built into every source file in the module being built.
This will be used for mixed-source framework targets to give Swift code the
same implicit visibility for Objective-C decls in the same module that it
already has for other Swift decls.
<rdar://problem/16701230>
Swift SVN r17053
When an Objective-C class method follows the naming convention of a
factory method, i.e., its starting words match the ending words of the
class name, import it as a convenience initializer when it also:
- Returns instancetype (i.e., dynamic Self in Swift parlance)
- Has no NSError** parameters, which indicate the potential for failures
This is under a new flag (-enable-objc-factory-method-constructors)
because it is not generally functional. However, this is a step toward
<rdar://problem/16509024>.
Swift SVN r16479
When we build the standard libary with -parse-stdlib the frontend sets the
assert configuration to 'DisableReplacement'. Constant replacement does not take
place and the call to the builtin function 'assert_configuration' call stays in
the serialize SIL of the swiftmodule.
IRGen replaces the function call to the assert_configuration builtin function by
the value for Debug (0). The resuling standard library dylib hence contains the
debug version of the standard library assert function.
Frontend optimization flags can now determine whether asserts should be executed
or not.
This commit removes the SWIFT_ASSERTS cmake flag.
rdar://16458612
Swift SVN r16473
This patch adds support for a builtin function assert_configuration that is
replaced by constant progpagation by an appropriate value dependent on a compile
time setting. This replacement can also be disabled when serializing sil for a
library.
Using this mechanism we implement assertions that can be disabled (or whose
behavior changes) depending on compile time build settings (Debug, Release,
DisableReplacement).
In the standard library we can now write one assert function that uses this
builtin function to provide different compile time selectable runtime behavior.
Example
Assert.swift:
@transparent
func assert<T : LogicValue>(
condition: @auto_closure () -> T, message: StaticString = StaticString(),
// Do not supply these parameters explicitly; they will be filled in
// by the compiler and aren't even present when asserts are disabled
file: StaticString = __FILE__, line: UWord = __LINE__
) {
// Only in debug mode.
if _isDebug() {
assert(condition().getLogicValue(), message, file, line)
}
}
AssertCommon.swift:
@transparent
func _isDebug() -> Bool {
return Int32(Builtin.assert_configuration()) == 0;
}
rdar://16458612
Swift SVN r16472
which provides the Neon feature. Do all the necessary
plumbing to get this from the driver to the backend.
Also, support -arch arm64, and diagnose bad -arch values
instead of silently ignoring them. It's not clear to me
that we really want to support -arch as an alternative
to -target, but unless we rip it out or establish some
sort of real policy about it, it really ought to do
something approximating the right thing.
It would be nice if we could abstract enough of clang's
driver that we could re-use some of its basic logic about
tool chains and targets instaed of iteratively
rediscovering everything it does that's actually
critically important.
Swift SVN r16447
In Objective-C, any method with no arguments can be used with dot syntax, as
can any method that takes one argument whose name starts with "set". This
commit adds a frontend-only flag -enable-objc-implicit-properties to look for
"setter-like" methods that match up with "getter-like" methods to import them
as Swift properties. By default, such methods are just considered unrelated
methods.
Part of <rdar://problem/16215476>
Swift SVN r16025
Centralize the logic for figuring out what name to use for a class or
protocol in the Objective-C runtime. When the flag is enabled (it's
still disabled by default), use mangled names for all Swift-defined
classes, including those that are @objc. Note that the naming is
determined in the AST, because we're also going to use this logic when
printing an Objective-C header for Clang's consumption. The mangled
names will always start with _Tt, so they're easy to recognize and
demangle in various tools or, eventually, in the Objective-C runtime.
The new test (test/IRGen/objc_mangling.sil) is the only test of this
behavior at the moment. The other test changes are due to the
centralized logic tweaking the names of internal constants (_DATA_*,
_CATEGORY_*, etc.).
This is the majority of <rdar://problem/15506580>.
Swift SVN r15588
The frontend/driver flag is "-application-extension'. This
activates a language option which will be used for more restrictive
availability checking.
Operationally, this also passes...
- "-fapplication-extension" to the clang importer
- "-application_extension" to ld
Swift SVN r15543
The frontend option -split-objc-selectors splits the first part of an
Objective-C selector into both a function name and the first parameter
name at the last preposition. For example, this Objective-C method:
- (NSString *)stringByPaddingToLength:(NSUInteger)newLength withString:(NSString *)padString startingAtIndex:(NSUInteger)padIndex
is imported as
func stringByPadding toLength(newLength: Int) withString(padString: String) startingAtIndex(padIndex: Int) -> String
Swift SVN r15156
The driver infers the filename from the module file by replacing the extension,
and passes the explicit path to the swiftdoc file to the frontend. But there
is no option in the driver to control emission of swiftdoc (it is always
emitted, and name is always inferred from the swiftmodule name).
The swiftdoc file consists of a single table that maps USRs to {brief comment,
raw comment}. In order to look up a comment for decl we generate the USR
first. We hope that the performance hit will not be that bad, because most
declarations come from Clang. The advantage of this design is that the
swiftdoc file is not locked to the swiftmodule file, and can be updated,
replaced, and even localized.
Swift SVN r14914
