From ed5640d8b587fbcfed7dd7967f3de04b37a76f26 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 11:06:44 +0200 Subject: Adding upstream version 4:7.4.7. Signed-off-by: Daniel Baumann --- compilerplugins/clang/compat.hxx | 130 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 130 insertions(+) create mode 100644 compilerplugins/clang/compat.hxx (limited to 'compilerplugins/clang/compat.hxx') diff --git a/compilerplugins/clang/compat.hxx b/compilerplugins/clang/compat.hxx new file mode 100644 index 000000000..350263da6 --- /dev/null +++ b/compilerplugins/clang/compat.hxx @@ -0,0 +1,130 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#pragma once + +#include +#include + +#include "clang/AST/Expr.h" +#include "clang/AST/ExprCXX.h" +#include "clang/Basic/SourceManager.h" +#include "clang/Basic/Specifiers.h" +#include "llvm/ADT/StringExtras.h" +#include "llvm/Support/FileSystem.h" + +#include "config_clang.h" + +// Compatibility wrapper to abstract over (trivial) changes in the Clang API: +namespace compat { + +inline std::string toString(llvm::APSInt const & i, unsigned radix) { +#if CLANG_VERSION >= 130000 + return llvm::toString(i, radix); +#else + return i.toString(radix); +#endif +} + +inline std::pair getImmediateExpansionRange( + clang::SourceManager const & SM, clang::SourceLocation Loc) +{ + auto const csr = SM.getImmediateExpansionRange(Loc); + if (csr.isCharRange()) { /*TODO*/ } + return {csr.getBegin(), csr.getEnd()}; +} + +/// Utility method +inline clang::Expr const * IgnoreParenImplicit(clang::Expr const * expr) { + return expr->IgnoreImplicit()->IgnoreParens()->IgnoreImplicit(); +} + +#if CLANG_VERSION >= 130000 +constexpr clang::ExprValueKind VK_PRValue = clang::VK_PRValue; +#else +constexpr clang::ExprValueKind VK_PRValue = clang::VK_RValue; +#endif + +inline bool EvaluateAsInt(clang::Expr const * expr, llvm::APSInt& intRes, const clang::ASTContext& ctx) { + clang::Expr::EvalResult res; + bool b = expr->EvaluateAsInt(res, ctx); + if (b && res.Val.isInt()) + intRes = res.Val.getInt(); + return b; +} + +// Work around CastExpr::getSubExprAsWritten firing +// +// include/llvm/Support/Casting.h:269: typename llvm::cast_retty::ret_type llvm::cast(Y*) +// [with X = clang::CXXConstructExpr; Y = clang::Expr; +// typename llvm::cast_retty::ret_type = clang::CXXConstructExpr*]: Assertion +// `isa(Val) && "cast() argument of incompatible type!"' failed. +// +// for CastExprs involving ConstantExpr (introduced with +// "Create +// ConstantExpr class" towards LLVM 8) like +// +// CXXFunctionalCastExpr 0xc01c4e8 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>' functional cast to OStringLiteral +// `-ConstantExpr 0xc01c380 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>' +// |-value: Struct +// | |-fields: Int 1073741824, Int 8 +// | `-field: Array size=9 +// | |-elements: Int 46, Int 111, Int 115, Int 108 +// | |-elements: Int 45, Int 116, Int 109, Int 112 +// | `-element: Int 0 +// `-CXXConstructExpr 0xc01c350 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>' 'void (const char (&)[9])' +// `-StringLiteral 0xc019ad8 'const char [9]' lvalue ".osl-tmp" +// +// Copies code from Clang's lib/AST/Expr.cpp: +namespace detail { + inline clang::Expr *skipImplicitTemporary(clang::Expr *expr) { + // Skip through reference binding to temporary. + if (clang::MaterializeTemporaryExpr *Materialize + = clang::dyn_cast(expr)) + expr = Materialize->getSubExpr(); + + // Skip any temporary bindings; they're implicit. + if (clang::CXXBindTemporaryExpr *Binder = clang::dyn_cast(expr)) + expr = Binder->getSubExpr(); + + return expr; + } +} +inline clang::Expr *getSubExprAsWritten(clang::CastExpr *This) { + clang::Expr *SubExpr = nullptr; + clang::CastExpr *E = This; + do { + SubExpr = detail::skipImplicitTemporary(E->getSubExpr()); + + // Conversions by constructor and conversion functions have a + // subexpression describing the call; strip it off. + if (E->getCastKind() == clang::CK_ConstructorConversion) + SubExpr = + detail::skipImplicitTemporary(clang::cast(SubExpr->IgnoreImplicit())->getArg(0)); + else if (E->getCastKind() == clang::CK_UserDefinedConversion) { + assert((clang::isa(SubExpr) || + clang::isa(SubExpr)) && + "Unexpected SubExpr for CK_UserDefinedConversion."); + if (clang::isa(SubExpr)) + SubExpr = clang::cast(SubExpr)->getImplicitObjectArgument(); + } + + // If the subexpression we're left with is an implicit cast, look + // through that, too. + } while ((E = clang::dyn_cast(SubExpr))); + + return SubExpr; +} +inline const clang::Expr *getSubExprAsWritten(const clang::CastExpr *This) { + return getSubExprAsWritten(const_cast(This)); +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ -- cgit v1.2.3