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#include "src/buildtool/build_engine/target_map/utils.hpp"
#include <algorithm>
#include <filesystem>
#include <vector>
#include "src/utils/cpp/path.hpp"
auto BuildMaps::Target::Utils::obtainTargetByName(
const SubExprEvaluator& eval,
const ExpressionPtr& expr,
const Configuration& env,
const Base::EntityName& current,
std::unordered_map<BuildMaps::Target::ConfiguredTarget,
AnalysedTargetPtr> const& deps_by_transition)
-> AnalysedTargetPtr {
auto const& empty_map_exp = Expression::kEmptyMapExpr;
auto reference = eval(expr["dep"], env);
std::string error{};
auto target = BuildMaps::Base::ParseEntityNameFromExpression(
reference, current, [&error](std::string const& parse_err) {
error = parse_err;
});
if (not target) {
throw Evaluator::EvaluationError{
fmt::format("Parsing target name {} failed with:\n{}",
reference->ToString(),
error)};
}
auto transition = eval(expr->Get("transition", empty_map_exp), env);
auto it = deps_by_transition.find(BuildMaps::Target::ConfiguredTarget{
*target, Configuration{transition}});
if (it == deps_by_transition.end()) {
throw Evaluator::EvaluationError{fmt::format(
"Reference to undeclared dependency {} in transition {}",
reference->ToString(),
transition->ToString())};
}
return it->second;
}
auto BuildMaps::Target::Utils::obtainTarget(
const SubExprEvaluator& eval,
const ExpressionPtr& expr,
const Configuration& env,
std::unordered_map<BuildMaps::Target::ConfiguredTarget,
AnalysedTargetPtr> const& deps_by_transition)
-> AnalysedTargetPtr {
auto const& empty_map_exp = Expression::kEmptyMapExpr;
auto reference = eval(expr["dep"], env);
if (not reference->IsName()) {
throw Evaluator::EvaluationError{
fmt::format("Not a target name: {}", reference->ToString())};
}
auto transition = eval(expr->Get("transition", empty_map_exp), env);
auto it = deps_by_transition.find(BuildMaps::Target::ConfiguredTarget{
reference->Name(), Configuration{transition}});
if (it == deps_by_transition.end()) {
throw Evaluator::EvaluationError{fmt::format(
"Reference to undeclared dependency {} in transition {}",
reference->ToString(),
transition->ToString())};
}
return it->second;
}
auto BuildMaps::Target::Utils::keys_expr(const ExpressionPtr& map)
-> ExpressionPtr {
auto const& m = map->Map();
auto result = Expression::list_t{};
result.reserve(m.size());
std::for_each(m.begin(), m.end(), [&](auto const& item) {
result.emplace_back(ExpressionPtr{item.first});
});
return ExpressionPtr{result};
}
auto BuildMaps::Target::Utils::artifacts_tree(const ExpressionPtr& map)
-> std::variant<std::string, ExpressionPtr> {
auto result = Expression::map_t::underlying_map_t{};
for (auto const& [key, artifact] : map->Map()) {
auto location = ToNormalPath(std::filesystem::path{key}).string();
if (auto it = result.find(location);
it != result.end() && !(it->second == artifact)) {
return location;
}
result.emplace(std::move(location), artifact);
}
return ExpressionPtr{Expression::map_t{result}};
}
auto BuildMaps::Target::Utils::tree_conflict(const ExpressionPtr& map)
-> std::optional<std::string> {
std::vector<std::filesystem::path> trees{};
for (auto const& [path, artifact] : map->Map()) {
if (artifact->Artifact().IsTree()) {
trees.emplace_back(ToNormalPath(std::filesystem::path{path}));
}
}
if (trees.empty()) {
return std::nullopt;
}
for (auto const& [path, artifact] : map->Map()) {
auto p = ToNormalPath(std::filesystem::path{path});
for (auto const& treepath : trees) {
if (not artifact->Artifact().IsTree()) {
if (std::mismatch(treepath.begin(), treepath.end(), p.begin())
.first == treepath.end()) {
return path;
}
}
}
}
return std::nullopt;
}
auto BuildMaps::Target::Utils::getTainted(
std::set<std::string>* tainted,
const Configuration& config,
const ExpressionPtr& tainted_exp,
const BuildMaps::Target::TargetMap::LoggerPtr& logger) -> bool {
if (not tainted_exp) {
return false;
}
auto tainted_val =
tainted_exp.Evaluate(config, {}, [logger](auto const& msg) {
(*logger)(fmt::format("While evaluating tainted:\n{}", msg), true);
});
if (not tainted_val) {
return false;
}
if (not tainted_val->IsList()) {
(*logger)(fmt::format("tainted should evaluate to a list of strings, "
"but got {}",
tainted_val->ToString()),
true);
return false;
}
for (auto const& entry : tainted_val->List()) {
if (not entry->IsString()) {
(*logger)(fmt::format("tainted should evaluate to a list of "
"strings, but got {}",
tainted_val->ToString()),
true);
return false;
}
tainted->insert(entry->String());
}
return true;
}
namespace {
auto hash_vector(std::vector<std::string> const& vec) -> std::string {
auto hasher = HashGenerator{BuildMaps::Target::Utils::kActionHash}
.IncrementalHasher();
for (auto const& s : vec) {
hasher.Update(HashGenerator{BuildMaps::Target::Utils::kActionHash}
.Run(s)
.Bytes());
}
auto digest = std::move(hasher).Finalize();
if (not digest) {
Logger::Log(LogLevel::Error, "Failed to finalize hash.");
std::terminate();
}
return digest->Bytes();
}
} // namespace
auto BuildMaps::Target::Utils::createAction(
const ActionDescription::outputs_t& output_files,
const ActionDescription::outputs_t& output_dirs,
std::vector<std::string> command,
const ExpressionPtr& env,
std::optional<std::string> may_fail,
bool no_cache,
const ExpressionPtr& inputs_exp) -> ActionDescription::Ptr {
auto hasher = HashGenerator{BuildMaps::Target::Utils::kActionHash}
.IncrementalHasher();
hasher.Update(hash_vector(output_files));
hasher.Update(hash_vector(output_dirs));
hasher.Update(hash_vector(command));
hasher.Update(env->ToHash());
hasher.Update(hash_vector(may_fail ? std::vector<std::string>{*may_fail}
: std::vector<std::string>{}));
hasher.Update(no_cache ? std::string{"N"} : std::string{"Y"});
hasher.Update(inputs_exp->ToHash());
auto digest = std::move(hasher).Finalize();
if (not digest) {
Logger::Log(LogLevel::Error, "Failed to finalize hash.");
std::terminate();
}
auto action_id = digest->HexString();
std::map<std::string, std::string> env_vars{};
for (auto const& [env_var, env_value] : env->Map()) {
env_vars.emplace(env_var, env_value->String());
}
ActionDescription::inputs_t inputs;
inputs.reserve(inputs_exp->Map().size());
for (auto const& [input_path, artifact] : inputs_exp->Map()) {
inputs.emplace(input_path, artifact->Artifact());
}
return std::make_shared<ActionDescription>(output_files,
output_dirs,
Action{std::move(action_id),
std::move(command),
std::move(env_vars),
std::move(may_fail),
no_cache},
std::move(inputs));
}
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