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46d5d397d9
Add a demangling support for a small subset of a new Rust mangling scheme, with complete support planned as a follow up work. Intergate Rust demangling into llvm-cxxfilt and use llvm-cxxfilt for end-to-end testing. The new Rust mangling scheme uses "_R" as a prefix, which makes it easy to disambiguate it from other mangling schemes. The public API is modeled after __cxa_demangle / llvm::itaniumDemangle, since potential candidates for further integration use those. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D101444
91 lines
2.6 KiB
C++
91 lines
2.6 KiB
C++
//===------------------ RustDemangleTest.cpp ------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Demangle/Demangle.h"
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#include "gmock/gmock.h"
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#include "gtest/gtest.h"
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#include <cstdlib>
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TEST(RustDemangle, Success) {
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char *Demangled =
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llvm::rustDemangle("_RNvC1a4main", nullptr, nullptr, nullptr);
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EXPECT_STREQ(Demangled, "a::main");
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std::free(Demangled);
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// With status.
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int Status = 0;
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Demangled = llvm::rustDemangle("_RNvC1a4main", nullptr, nullptr, &Status);
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EXPECT_EQ(Status, llvm::demangle_success);
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EXPECT_STREQ(Demangled, "a::main");
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std::free(Demangled);
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// With status and length.
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size_t N = 0;
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Demangled = llvm::rustDemangle("_RNvC1a4main", nullptr, &N, &Status);
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EXPECT_EQ(Status, llvm::demangle_success);
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EXPECT_EQ(N, 8u);
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EXPECT_STREQ(Demangled, "a::main");
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std::free(Demangled);
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}
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TEST(RustDemangle, Invalid) {
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int Status = 0;
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char *Demangled = nullptr;
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// Invalid prefix.
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Demangled = llvm::rustDemangle("_ABCDEF", nullptr, nullptr, &Status);
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EXPECT_EQ(Status, llvm::demangle_invalid_mangled_name);
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EXPECT_EQ(Demangled, nullptr);
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// Correct prefix but still invalid.
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Demangled = llvm::rustDemangle("_RRR", nullptr, nullptr, &Status);
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EXPECT_EQ(Status, llvm::demangle_invalid_mangled_name);
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EXPECT_EQ(Demangled, nullptr);
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}
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TEST(RustDemangle, OutputBufferWithoutLength) {
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char *Buffer = static_cast<char *>(std::malloc(1024));
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ASSERT_NE(Buffer, nullptr);
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int Status = 0;
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char *Demangled =
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llvm::rustDemangle("_RNvC1a4main", Buffer, nullptr, &Status);
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EXPECT_EQ(Status, llvm::demangle_invalid_args);
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EXPECT_EQ(Demangled, nullptr);
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std::free(Buffer);
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}
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TEST(RustDemangle, OutputBuffer) {
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size_t N = 1024;
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char *Buffer = static_cast<char *>(std::malloc(N));
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ASSERT_NE(Buffer, nullptr);
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int Status = 0;
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char *Demangled = llvm::rustDemangle("_RNvC1a4main", Buffer, &N, &Status);
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EXPECT_EQ(Status, llvm::demangle_success);
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EXPECT_EQ(Demangled, Buffer);
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EXPECT_STREQ(Demangled, "a::main");
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std::free(Demangled);
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}
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TEST(RustDemangle, SmallOutputBuffer) {
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size_t N = 1;
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char *Buffer = static_cast<char *>(std::malloc(N));
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ASSERT_NE(Buffer, nullptr);
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int Status = 0;
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char *Demangled = llvm::rustDemangle("_RNvC1a4main", Buffer, &N, &Status);
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EXPECT_EQ(Status, llvm::demangle_success);
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EXPECT_STREQ(Demangled, "a::main");
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std::free(Demangled);
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}
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