d1a2b80b9d
...as discussed in the mail thread starting at <https://lists.freedesktop.org/archives/libreoffice/2020-November/086234.html> "Bump --enable-compiler-plugins Clang baseline?" (and now picked up again at <https://lists.freedesktop.org/archives/libreoffice/2022-February/088459.html> "Re: Bump --enable-compiler-plugins Clang baseline?"), and clean up compilerplugins/clang/ accordingly Change-Id: I5e81c6fdcc363aeefd6227606225b526fdf7ac16 Reviewed-on: https://gerrit.libreoffice.org/c/core/+/129989 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
130 lines
4.8 KiB
C++
130 lines
4.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#include <string>
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#include <utility>
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#include "clang/AST/Expr.h"
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#include "clang/AST/ExprCXX.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/Specifiers.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/FileSystem.h"
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#include "config_clang.h"
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// Compatibility wrapper to abstract over (trivial) changes in the Clang API:
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namespace compat {
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inline std::string toString(llvm::APSInt const & i, unsigned radix) {
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#if CLANG_VERSION >= 130000
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return llvm::toString(i, radix);
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#else
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return i.toString(radix);
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#endif
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}
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inline std::pair<clang::SourceLocation, clang::SourceLocation> getImmediateExpansionRange(
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clang::SourceManager const & SM, clang::SourceLocation Loc)
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{
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auto const csr = SM.getImmediateExpansionRange(Loc);
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if (csr.isCharRange()) { /*TODO*/ }
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return {csr.getBegin(), csr.getEnd()};
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}
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/// Utility method
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inline clang::Expr const * IgnoreParenImplicit(clang::Expr const * expr) {
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return expr->IgnoreImplicit()->IgnoreParens()->IgnoreImplicit();
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}
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#if CLANG_VERSION >= 130000
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constexpr clang::ExprValueKind VK_PRValue = clang::VK_PRValue;
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#else
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constexpr clang::ExprValueKind VK_PRValue = clang::VK_RValue;
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#endif
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inline bool EvaluateAsInt(clang::Expr const * expr, llvm::APSInt& intRes, const clang::ASTContext& ctx) {
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clang::Expr::EvalResult res;
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bool b = expr->EvaluateAsInt(res, ctx);
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if (b && res.Val.isInt())
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intRes = res.Val.getInt();
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return b;
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}
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// Work around CastExpr::getSubExprAsWritten firing
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//
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// include/llvm/Support/Casting.h:269: typename llvm::cast_retty<X, Y*>::ret_type llvm::cast(Y*)
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// [with X = clang::CXXConstructExpr; Y = clang::Expr;
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// typename llvm::cast_retty<X, Y*>::ret_type = clang::CXXConstructExpr*]: Assertion
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// `isa<X>(Val) && "cast<Ty>() argument of incompatible type!"' failed.
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//
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// for CastExprs involving ConstantExpr (introduced with
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// <https://github.com/llvm/llvm-project/commit/7c44da279e399d302a685c500e7f802f8adf9762> "Create
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// ConstantExpr class" towards LLVM 8) like
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//
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// CXXFunctionalCastExpr 0xc01c4e8 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>' functional cast to OStringLiteral <ConstructorConversion>
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// `-ConstantExpr 0xc01c380 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>'
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// |-value: Struct
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// | |-fields: Int 1073741824, Int 8
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// | `-field: Array size=9
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// | |-elements: Int 46, Int 111, Int 115, Int 108
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// | |-elements: Int 45, Int 116, Int 109, Int 112
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// | `-element: Int 0
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// `-CXXConstructExpr 0xc01c350 'class rtl::OStringLiteral<9>':'class rtl::OStringLiteral<9>' 'void (const char (&)[9])'
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// `-StringLiteral 0xc019ad8 'const char [9]' lvalue ".osl-tmp"
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//
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// Copies code from Clang's lib/AST/Expr.cpp:
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namespace detail {
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inline clang::Expr *skipImplicitTemporary(clang::Expr *expr) {
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// Skip through reference binding to temporary.
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if (clang::MaterializeTemporaryExpr *Materialize
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= clang::dyn_cast<clang::MaterializeTemporaryExpr>(expr))
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expr = Materialize->getSubExpr();
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// Skip any temporary bindings; they're implicit.
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if (clang::CXXBindTemporaryExpr *Binder = clang::dyn_cast<clang::CXXBindTemporaryExpr>(expr))
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expr = Binder->getSubExpr();
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return expr;
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}
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}
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inline clang::Expr *getSubExprAsWritten(clang::CastExpr *This) {
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clang::Expr *SubExpr = nullptr;
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clang::CastExpr *E = This;
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do {
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SubExpr = detail::skipImplicitTemporary(E->getSubExpr());
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// Conversions by constructor and conversion functions have a
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// subexpression describing the call; strip it off.
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if (E->getCastKind() == clang::CK_ConstructorConversion)
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SubExpr =
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detail::skipImplicitTemporary(clang::cast<clang::CXXConstructExpr>(SubExpr->IgnoreImplicit())->getArg(0));
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else if (E->getCastKind() == clang::CK_UserDefinedConversion) {
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assert((clang::isa<clang::CXXMemberCallExpr>(SubExpr) ||
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clang::isa<clang::BlockExpr>(SubExpr)) &&
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"Unexpected SubExpr for CK_UserDefinedConversion.");
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if (clang::isa<clang::CXXMemberCallExpr>(SubExpr))
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SubExpr = clang::cast<clang::CXXMemberCallExpr>(SubExpr)->getImplicitObjectArgument();
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}
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// If the subexpression we're left with is an implicit cast, look
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// through that, too.
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} while ((E = clang::dyn_cast<clang::ImplicitCastExpr>(SubExpr)));
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return SubExpr;
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}
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inline const clang::Expr *getSubExprAsWritten(const clang::CastExpr *This) {
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return getSubExprAsWritten(const_cast<clang::CastExpr *>(This));
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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