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This method centralizes the logic for determining whether to skip emission of SIL associated with a Decl.
78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
//===--- SILGenTopLevel.h - Top-level Code Emission -------------*- C++ -*-===//
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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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#ifndef SWIFT_SILGEN_SILGENTOPLEVEL_H
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#define SWIFT_SILGEN_SILGENTOPLEVEL_H
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#include "SILGen.h"
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#include "swift/AST/ASTVisitor.h"
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#include "swift/AST/SourceFile.h"
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#include "swift/AST/TypeMemberVisitor.h"
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namespace swift {
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namespace Lowering {
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/// Generates a `SILFunction` for `TopLevelCodeDecl`s within a
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/// source file ran in script mode.
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class SILGenTopLevel : public ASTVisitor<SILGenTopLevel> {
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public:
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/// Generate SIL for toplevel code into `SGF`
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SILGenTopLevel(SILGenFunction &SGF);
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void visitSourceFile(SourceFile *SF);
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void visitDecl(Decl *D) {}
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void visitNominalTypeDecl(NominalTypeDecl *NTD);
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void visitExtensionDecl(ExtensionDecl *ED);
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void visitAbstractFunctionDecl(AbstractFunctionDecl *AFD);
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void visitAbstractStorageDecl(AbstractStorageDecl *ASD);
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void visitTopLevelCodeDecl(TopLevelCodeDecl *TD);
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private:
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/// The `SILGenFunction` where toplevel code is emitted
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SILGenFunction &SGF;
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/// Walks type declarations to scan for instances where unitialized global
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/// variables are captured by function declarations and emits
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/// `mark_function_escape` SIL instructions for these escape points as needed
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class TypeVisitor : public TypeMemberVisitor<TypeVisitor> {
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public:
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/// Emit `mark_function_escape` SIL instructions into `SGF` for encountered
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/// escape points.
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TypeVisitor(SILGenFunction &SGF);
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void visit(Decl *D);
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void visitDecl(Decl *D) {}
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void emit(IterableDeclContext *Ctx);
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virtual void visitPatternBindingDecl(PatternBindingDecl *PD);
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void visitNominalTypeDecl(NominalTypeDecl *ntd);
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void visitAbstractFunctionDecl(AbstractFunctionDecl *AFD);
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void visitAbstractStorageDecl(AbstractStorageDecl *ASD);
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virtual ~TypeVisitor() {}
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private:
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SILGenFunction &SGF;
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};
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class ExtensionVisitor : public TypeVisitor {
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public:
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/// Emit `mark_function_escape` SIL instructions into `SGF` for encountered
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/// escape points.
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ExtensionVisitor(SILGenFunction &SGF);
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void visitPatternBindingDecl(PatternBindingDecl *PD) override;
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};
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};
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} // namespace Lowering
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} // namespace swift
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#endif
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