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#include "yql_co_transformer.h"
#include "yql_co.h"
#include <yql/essentials/core/yql_expr_optimize.h>
#include <yql/essentials/core/yql_expr_type_annotation.h>
#include <yql/essentials/core/yql_join.h>
#include <yql/essentials/core/yql_opt_utils.h>
#include <yql/essentials/core/yql_opt_window.h>
#include <yql/essentials/utils/log/log.h>
#include <yql/essentials/utils/yql_panic.h>
#include <yql/essentials/ast/yql_gc_nodes.h>
#include <util/string/cast.h>
#include <unordered_set>
namespace NYql {
static const char CheckMissingWorldOptName[] = "CheckMissingWorld";
namespace {
class TCommonOptTransformer final : public TSyncTransformerBase {
public:
TCommonOptTransformer(TTypeAnnotationContext* typeCtx, bool final, bool forPeephole)
: TypeCtx_(typeCtx)
, Final_(final)
, ForPeephole_(forPeephole)
{}
IGraphTransformer::TStatus DoTransform(TExprNode::TPtr input, TExprNode::TPtr& output, TExprContext& ctx) final;
void Rewind() final;
private:
IGraphTransformer::TStatus DoTransform(const TExprNode::TPtr& input, TExprNode::TPtr& output, TExprContext& ctx,
const TCallableOptimizerMap& callables, TProcessedNodesSet& processedNodes,
bool withParents);
IGraphTransformer::TStatus DoTransform(const TExprNode::TPtr& input, TExprNode::TPtr& output, TExprContext& ctx,
const TFinalizingOptimizerMap& callables);
bool ScanErrors(const TExprNode& node, TExprContext& ctx);
private:
TProcessedNodesSet SimpleProcessedNodes_[TCoCallableRules::SIMPLE_STEPS];
TProcessedNodesSet FlowProcessedNodes_[TCoCallableRules::FLOW_STEPS];
TProcessedNodesSet FinalProcessedNodes_;
TProcessedNodesSet ErrorProcessedNodes_;
THashSet<TIssue> AddedErrors_;
TTypeAnnotationContext* TypeCtx_;
const bool Final_;
const bool ForPeephole_;
bool CheckMissingWorld_ = false;
};
}
TAutoPtr<IGraphTransformer> CreateCommonOptTransformer(bool forPeephole, TTypeAnnotationContext* typeCtx) {
return new TCommonOptTransformer(typeCtx, false, forPeephole);
}
TAutoPtr<IGraphTransformer> CreateCommonOptFinalTransformer(TTypeAnnotationContext* typeCtx) {
return new TCommonOptTransformer(typeCtx, true, false);
}
IGraphTransformer::TStatus TCommonOptTransformer::DoTransform(TExprNode::TPtr input, TExprNode::TPtr& output, TExprContext& ctx) {
IGraphTransformer::TStatus status = IGraphTransformer::TStatus::Ok;
output = std::move(input);
if (IsOptimizerEnabled<CheckMissingWorldOptName>(*TypeCtx_) && !IsOptimizerDisabled<CheckMissingWorldOptName>(*TypeCtx_)) {
CheckMissingWorld_ = true;
}
if (Final_) {
return DoTransform(input = std::move(output), output, ctx, TCoCallableRules::Instance().FinalCallables, FinalProcessedNodes_, true);
}
for (ui32 i = 0; i < TCoCallableRules::SIMPLE_STEPS; ++i) {
status = DoTransform(input = std::move(output), output, ctx, TCoCallableRules::Instance().SimpleCallables[i], SimpleProcessedNodes_[i], true);
if (status.Level != IGraphTransformer::TStatus::Ok) {
return status;
}
}
for (ui32 i = 0; i < TCoCallableRules::FLOW_STEPS; ++i) {
status = DoTransform(input = std::move(output), output, ctx, TCoCallableRules::Instance().FlowCallables[i], FlowProcessedNodes_[i], true);
if (status.Level != IGraphTransformer::TStatus::Ok) {
return status;
}
}
status = DoTransform(input = std::move(output), output, ctx, TCoCallableRules::Instance().Finalizers);
if (status.Level != IGraphTransformer::TStatus::Ok) {
return status;
}
if (!ScanErrors(*output, ctx)) {
return IGraphTransformer::TStatus::Error;
}
return IGraphTransformer::TStatus::Ok;
}
void TCommonOptTransformer::Rewind() {
CheckMissingWorld_ = false;
AddedErrors_.clear();
ErrorProcessedNodes_.clear();
FinalProcessedNodes_.clear();
for (auto& set : FlowProcessedNodes_) {
set.clear();
}
for (auto& set : SimpleProcessedNodes_) {
set.clear();
}
}
bool TCommonOptTransformer::ScanErrors(const TExprNode& node, TExprContext& ctx) {
auto [it, inserted] = ErrorProcessedNodes_.emplace(node.UniqueId());
if (!inserted) {
return true;
}
for (const auto& child : node.Children()) {
if (!ScanErrors(*child, ctx)) {
return false;
}
}
if (!node.IsCallable("ErrorType")) {
return true;
}
auto issue = node.GetTypeAnn()->Cast<TTypeExprType>()->GetType()->Cast<TErrorExprType>()->GetError();
if (AddedErrors_.insert(issue).second) {
ctx.AddError(issue);
}
return false;
}
IGraphTransformer::TStatus TCommonOptTransformer::DoTransform(
const TExprNode::TPtr& input, TExprNode::TPtr& output, TExprContext& ctx,
const TCallableOptimizerMap& callables,
TProcessedNodesSet& processedNodes, bool withParents)
{
TOptimizeExprSettings settings(TypeCtx_);
settings.ProcessedNodes = &processedNodes;
settings.CustomInstantTypeTransformer = TypeCtx_->CustomInstantTypeTransformer.Get();
TParentsMap parentsMap;
TOptimizeContext optCtx;
optCtx.Types = TypeCtx_;
optCtx.ForPeephole = ForPeephole_;
if (withParents) {
GatherParents(*input, parentsMap);
optCtx.ParentsMap = &parentsMap;
}
TCallableOptimizerExt defaultOpt;
auto defaultIt = callables.find("");
if (defaultIt != callables.end()) {
defaultOpt = defaultIt->second;
}
return OptimizeExpr(input, output, [&callables, &optCtx, defaultOpt, checkMissingWorld = CheckMissingWorld_](const TExprNode::TPtr& node, TExprContext& ctx) -> TExprNode::TPtr {
const auto rule = callables.find(node->Content());
TExprNode::TPtr result = node;
if (rule != callables.cend()) {
result = (rule->second)(node, ctx, optCtx);
}
if (defaultOpt && result == node) {
result = defaultOpt(node, ctx, optCtx);
}
if (checkMissingWorld && result && result != node && !node->GetTypeAnn()->ReturnsWorld() && !node->IsCallable(RightName)) {
if (HasMissingWorlds(result, *node, *optCtx.Types)) {
throw yexception() << "Missing world over " << result->Dump();
}
}
return result;
}, ctx, settings);
}
IGraphTransformer::TStatus TCommonOptTransformer::DoTransform(const TExprNode::TPtr& input, TExprNode::TPtr& output, TExprContext& ctx,
const TFinalizingOptimizerMap& callables)
{
TParentsMap parentsMap;
TOptimizeContext optCtx;
optCtx.Types = TypeCtx_;
GatherParents(*input, parentsMap);
optCtx.ParentsMap = &parentsMap;
TNodeOnNodeOwnedMap toOptimize;
bool isError = false;
TFinalizingOptimizerExt defaultOpt;
auto defaultIt = callables.find("");
if (defaultIt != callables.end()) {
defaultOpt = defaultIt->second;
}
VisitExpr(input,
[&toOptimize, &isError](const TExprNode::TPtr&) {
return toOptimize.empty() && !isError;
},
[&callables, &defaultOpt, &toOptimize, &ctx, &optCtx, &isError](const TExprNode::TPtr& node) {
if (isError) {
return false;
}
if (toOptimize.empty()) {
const auto rule = callables.find(node->Content());
if (callables.cend() != rule) {
isError = isError || !(rule->second)(node, toOptimize, ctx, optCtx);
}
if (defaultOpt && toOptimize.empty() && !isError) {
isError = isError || !defaultOpt(node, toOptimize, ctx, optCtx);
}
}
return toOptimize.empty() && !isError;
}
);
if (isError) {
return IGraphTransformer::TStatus::Error;
}
if (!toOptimize.empty()) {
TOptimizeExprSettings settings(TypeCtx_);
settings.VisitTuples = true;
settings.CustomInstantTypeTransformer = TypeCtx_->CustomInstantTypeTransformer.Get();
return RemapExpr(input, output, toOptimize, ctx, settings);
}
output = input;
return IGraphTransformer::TStatus::Ok;
}
const TCoCallableRules& TCoCallableRules::Instance() {
return *Singleton<TCoCallableRules>();
}
TCoCallableRules::TCoCallableRules() {
RegisterCoSimpleCallables1(SimpleCallables[SIMPLE_STEP_1]);
RegisterCoSimpleCallables2(SimpleCallables[SIMPLE_STEP_2]);
RegisterCoSimpleCallables3(SimpleCallables[SIMPLE_STEP_3]);
RegisterCoFlowCallables1(FlowCallables[FLOW_STEP_1]);
RegisterCoFlowCallables2(FlowCallables[FLOW_STEP_2]);
RegisterCoFinalizers(Finalizers);
RegisterCoFinalCallables(FinalCallables);
}
}
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