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Emacs assumes .h files are C files by default which is why the tag "-*- C++ -*-" is needed. .cpp files do not have this problem.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
//===--- ASTNode.cpp - Swift Language ASTs --------------------------------===//
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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 - 2016 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 implements the ASTNode, which is a union of Stmt, Expr, and Decl.
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/ASTNode.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/Stmt.h"
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#include "swift/Basic/SourceLoc.h"
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using namespace swift;
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SourceRange ASTNode::getSourceRange() const {
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if (const Expr *E = this->dyn_cast<Expr*>())
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return E->getSourceRange();
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if (const Stmt *S = this->dyn_cast<Stmt*>())
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return S->getSourceRange();
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if (const Decl *D = this->dyn_cast<Decl*>())
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return D->getSourceRange();
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llvm_unreachable("unsupported AST node");
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}
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/// \brief Return the location of the start of the statement.
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SourceLoc ASTNode::getStartLoc() const {
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return getSourceRange().Start;
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}
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/// \brief Return the location of the end of the statement.
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SourceLoc ASTNode::getEndLoc() const {
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return getSourceRange().End;
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}
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void ASTNode::walk(ASTWalker &Walker) {
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if (Expr *E = this->dyn_cast<Expr*>())
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E->walk(Walker);
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else if (Stmt *S = this->dyn_cast<Stmt*>())
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S->walk(Walker);
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else if (Decl *D = this->dyn_cast<Decl*>())
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D->walk(Walker);
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else
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llvm_unreachable("unsupported AST node");
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}
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