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//===--- Annotations.cpp - Annotated source code for unit tests --*- C++-*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Testing/Support/Annotations.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/raw_ostream.h"
using namespace llvm;
// Crash if the assertion fails, printing the message and testcase.
// More elegant error handling isn't needed for unit tests.
static void require(bool Assertion, const char *Msg, llvm::StringRef Code) {
if (!Assertion) {
llvm::errs() << "Annotated testcase: " << Msg << "\n" << Code << "\n";
llvm_unreachable("Annotated testcase assertion failed!");
}
}
Annotations::Annotations(llvm::StringRef Text) {
auto Require = [Text](bool Assertion, const char *Msg) {
require(Assertion, Msg, Text);
};
llvm::Optional<llvm::StringRef> Name;
llvm::SmallVector<std::pair<llvm::StringRef, size_t>, 8> OpenRanges;
Code.reserve(Text.size());
while (!Text.empty()) {
if (Text.consume_front("^")) {
Points[Name.getValueOr("")].push_back(Code.size());
Name = llvm::None;
continue;
}
if (Text.consume_front("[[")) {
OpenRanges.emplace_back(Name.getValueOr(""), Code.size());
Name = llvm::None;
continue;
}
Require(!Name, "$name should be followed by ^ or [[");
if (Text.consume_front("]]")) {
Require(!OpenRanges.empty(), "unmatched ]]");
Range R;
R.Begin = OpenRanges.back().second;
R.End = Code.size();
Ranges[OpenRanges.back().first].push_back(R);
OpenRanges.pop_back();
continue;
}
if (Text.consume_front("$")) {
Name = Text.take_while(llvm::isAlnum);
Text = Text.drop_front(Name->size());
continue;
}
Code.push_back(Text.front());
Text = Text.drop_front();
}
Require(!Name, "unterminated $name");
Require(OpenRanges.empty(), "unmatched [[");
}
size_t Annotations::point(llvm::StringRef Name) const {
auto I = Points.find(Name);
require(I != Points.end() && I->getValue().size() == 1,
"expected exactly one point", Code);
return I->getValue()[0];
}
std::vector<size_t> Annotations::points(llvm::StringRef Name) const {
auto I = Points.find(Name);
if (I == Points.end())
return {};
return {I->getValue().begin(), I->getValue().end()};
}
Annotations::Range Annotations::range(llvm::StringRef Name) const {
auto I = Ranges.find(Name);
require(I != Ranges.end() && I->getValue().size() == 1,
"expected exactly one range", Code);
return I->getValue()[0];
}
std::vector<Annotations::Range>
Annotations::ranges(llvm::StringRef Name) const {
auto I = Ranges.find(Name);
if (I == Ranges.end())
return {};
return {I->getValue().begin(), I->getValue().end()};
}
llvm::raw_ostream &llvm::operator<<(llvm::raw_ostream &O,
const llvm::Annotations::Range &R) {
return O << llvm::formatv("[{0}, {1})", R.Begin, R.End);
}
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