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125 lines
4.3 KiB
C++
125 lines
4.3 KiB
C++
//===-- Frontend.cpp - frontend utility methods ---------------------------===//
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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 - 2015 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 http://swift.org/LICENSE.txt for license information
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// See http://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains utility methods for parsing and performing semantic
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// on modules.
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//
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//===----------------------------------------------------------------------===//
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#include "Frontend.h"
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#include "Immediate.h"
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#include "swift/AST/Identifier.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/Component.h"
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#include "swift/AST/Diagnostics.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Expr.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/NameLookup.h"
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#include "swift/AST/Pattern.h"
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#include "swift/AST/Stmt.h"
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#include "swift/AST/Types.h"
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#include "swift/Parse/Lexer.h"
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#include "swift/Subsystems.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/SourceMgr.h"
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using namespace swift;
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static Identifier getModuleIdentifier(StringRef OutputName,
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ASTContext &Context,
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bool IsMainModule) {
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StringRef moduleName = OutputName;
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// As a special case, recognize <stdin>.
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if (moduleName == "<stdin>")
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return Context.getIdentifier("stdin");
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// Find the stem of the filename.
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moduleName = llvm::sys::path::stem(moduleName);
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// Complain about non-identifier characters in the module name.
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if (!Lexer::isIdentifier(moduleName)) {
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if (IsMainModule) {
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moduleName = "main";
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} else {
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SourceLoc Loc;
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Context.Diags.diagnose(Loc, diag::bad_module_name, moduleName);
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moduleName = "bad";
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}
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}
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return Context.getIdentifier(moduleName);
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}
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/// "SIL" is non-null when we're parsing a .sil file instead of a .swift file.
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TranslationUnit*
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swift::buildSingleTranslationUnit(ASTContext &Context,
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StringRef OutputName,
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ArrayRef<unsigned> BufferIDs,
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bool ParseOnly, bool IsMainModule,
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SILModule *SIL) {
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Component *Comp = new (Context.Allocate<Component>(1)) Component();
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Identifier ID = getModuleIdentifier(OutputName, Context, IsMainModule);
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TranslationUnit *TU = new (Context) TranslationUnit(ID, Comp, Context,
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IsMainModule,
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/*IsReplModule=*/false);
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Context.LoadedModules[ID.str()] = TU;
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unsigned CurTUElem = 0;
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for (auto &BufferID : BufferIDs) {
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unsigned BufferOffset = 0;
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const llvm::MemoryBuffer *Buffer =
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Context.SourceMgr.getMemoryBuffer(BufferID);
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do {
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parseIntoTranslationUnit(TU, BufferID, &BufferOffset, 0, SIL);
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if (!ParseOnly && BufferIDs.size() == 1) {
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performNameBinding(TU, CurTUElem);
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performTypeChecking(TU, CurTUElem);
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CurTUElem = TU->Decls.size();
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}
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} while (BufferOffset != Buffer->getBufferSize());
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}
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if (!ParseOnly && BufferIDs.size() > 1) {
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performNameBinding(TU);
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performTypeChecking(TU);
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}
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return TU;
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}
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bool swift::appendToREPLTranslationUnit(TranslationUnit *TU,
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REPLContext &RC,
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llvm::MemoryBuffer *Buffer,
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unsigned &BufferOffset,
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unsigned BufferEndOffset) {
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assert(TU->Kind == TranslationUnit::Repl && "Can't append to a non-REPL TU");
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RC.CurBufferID
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= TU->getASTContext().SourceMgr.AddNewSourceBuffer(Buffer, llvm::SMLoc());
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bool FoundAnySideEffects = false;
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unsigned CurTUElem = RC.CurTUElem;
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do {
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FoundAnySideEffects |= parseIntoTranslationUnit(TU, RC.CurBufferID,
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&BufferOffset,
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BufferEndOffset);
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performNameBinding(TU, CurTUElem);
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performTypeChecking(TU, CurTUElem);
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CurTUElem = TU->Decls.size();
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} while (BufferOffset != BufferEndOffset);
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return FoundAnySideEffects;
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}
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