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303a3e5824
The Swift 4 Migrator is invoked through either the driver and frontend
with the -update-code flag.
The basic pipeline in the frontend is:
- Perform some list of syntactic fixes (there are currently none).
- Perform N rounds of sema fix-its on the primary input file, currently
set to 7 based on prior migrator seasons. Right now, this is just set
to take any fix-it suggested by the compiler.
- Emit a replacement map file, a JSON file describing replacements to a
file that Xcode knows how to understand.
Currently, the Migrator maintains a history of migration states along
the way for debugging purposes.
- Add -emit-remap frontend option
This will indicate the EmitRemap frontend action.
- Don't fork to a separte swift-update binary.
This is going to be a mode of the compiler, invoked by the same flags.
- Add -disable-migrator-fixits option
Useful for debugging, this skips the phase in the Migrator that
automatically applies fix-its suggested by the compiler.
- Add -emit-migrated-file-path option
This is used for testing/debugging scenarios. This takes the final
migration state's output text and writes it to the file specified
by this option.
- Add -dump-migration-states-dir
This dumps all of the migration states encountered during a migration
run for a file to the given directory. For example, the compiler
fix-it migration pass dumps the input file, the output file, and the
remap file between the two.
State output has the following naming convention:
${Index}-${MigrationPassName}-${What}.${extension}, such as:
1-FixitMigrationState-Input.swift
rdar://problem/30926261
103 lines
2.3 KiB
C++
103 lines
2.3 KiB
C++
//===--- FrontendOptions.cpp ----------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "swift/Frontend/FrontendOptions.h"
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#include "llvm/Support/ErrorHandling.h"
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using namespace swift;
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bool FrontendOptions::actionHasOutput() const {
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switch (RequestedAction) {
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case NoneAction:
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case Parse:
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case Typecheck:
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case DumpParse:
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case DumpAST:
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case DumpInterfaceHash:
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case PrintAST:
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case DumpScopeMaps:
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case DumpTypeRefinementContexts:
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return false;
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case EmitPCH:
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case EmitSILGen:
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case EmitSIL:
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case EmitSIBGen:
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case EmitSIB:
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case EmitModuleOnly:
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case UpdateCode:
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return true;
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case Immediate:
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case REPL:
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return false;
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case EmitAssembly:
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case EmitIR:
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case EmitBC:
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case EmitObject:
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case EmitImportedModules:
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case EmitTBD:
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return true;
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}
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llvm_unreachable("Unknown ActionType");
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}
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bool FrontendOptions::actionIsImmediate() const {
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switch (RequestedAction) {
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case NoneAction:
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case Parse:
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case Typecheck:
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case DumpParse:
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case DumpAST:
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case DumpInterfaceHash:
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case PrintAST:
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case DumpScopeMaps:
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case DumpTypeRefinementContexts:
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case EmitPCH:
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case EmitSILGen:
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case EmitSIL:
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case EmitSIBGen:
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case EmitSIB:
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case EmitModuleOnly:
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case UpdateCode:
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return false;
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case Immediate:
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case REPL:
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return true;
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case EmitAssembly:
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case EmitIR:
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case EmitBC:
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case EmitObject:
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case EmitImportedModules:
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case EmitTBD:
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return false;
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}
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llvm_unreachable("Unknown ActionType");
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}
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void FrontendOptions::forAllOutputPaths(
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std::function<void(const std::string &)> fn) const {
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if (RequestedAction != FrontendOptions::EmitModuleOnly) {
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for (const std::string &OutputFileName : OutputFilenames) {
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fn(OutputFileName);
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}
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}
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const std::string *outputs[] = {
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&ModuleOutputPath,
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&ModuleDocOutputPath,
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&ObjCHeaderOutputPath
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};
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for (const std::string *next : outputs) {
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if (!next->empty())
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fn(*next);
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}
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}
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