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#include "global.h"
#include "column.h"
#include "function.h"
#include "named_node.h"
#include "parse_tree.h"
#include "use.h"
#include <yql/essentials/sql/v1/complete/antlr4/pipeline.h>
#include <yql/essentials/sql/v1/complete/syntax/ansi.h>
#include <library/cpp/iterator/functools.h>
#include <util/string/join.h>
namespace NSQLComplete {
TVector<TTableId> TColumnContext::TablesWithAlias(TStringBuf alias) const {
if (alias.empty()) {
return TVector<TTableId>(Tables.begin(), Tables.end());
}
auto filtered = NFuncTools::Filter([&](const auto& x) { return x.Alias == alias; }, Tables);
return TVector<TTableId>(filtered.begin(), filtered.end());
}
class TErrorStrategy: public antlr4::DefaultErrorStrategy {
public:
antlr4::Token* singleTokenDeletion(antlr4::Parser* /* recognizer */) override {
return nullptr;
}
};
template <bool IsAnsiLexer>
class TSpecializedGlobalAnalysis: public IGlobalAnalysis {
public:
using TDefaultYQLGrammar = TAntlrGrammar<
NALADefaultAntlr4::SQLv1Antlr4Lexer,
NALADefaultAntlr4::SQLv1Antlr4Parser>;
using TAnsiYQLGrammar = TAntlrGrammar<
NALAAnsiAntlr4::SQLv1Antlr4Lexer,
NALAAnsiAntlr4::SQLv1Antlr4Parser>;
using G = std::conditional_t<
IsAnsiLexer,
TAnsiYQLGrammar,
TDefaultYQLGrammar>;
TSpecializedGlobalAnalysis()
: Chars_()
, Lexer_(&Chars_)
, Tokens_(&Lexer_)
, Parser_(&Tokens_)
{
Lexer_.removeErrorListeners();
Parser_.removeErrorListeners();
Parser_.setErrorHandler(std::make_shared<TErrorStrategy>());
}
TGlobalContext Analyze(TCompletionInput input, TEnvironment env) override {
SQLv1::Sql_queryContext* sqlQuery = Parse(input.Text);
Y_ENSURE(sqlQuery);
TGlobalContext ctx;
// TODO(YQL-19747): Add ~ParseContext(Tokens, ParseTree, CursorPosition)
ctx.Use = FindUseStatement(sqlQuery, &Tokens_, input.CursorPosition, env);
ctx.Names = CollectNamedNodes(sqlQuery, &Tokens_, input.CursorPosition);
ctx.EnclosingFunction = EnclosingFunction(sqlQuery, &Tokens_, input.CursorPosition);
ctx.Column = InferColumnContext(sqlQuery, &Tokens_, input.CursorPosition);
if (ctx.Use && ctx.Column) {
EnrichTableClusters(*ctx.Column, *ctx.Use);
}
return ctx;
}
private:
SQLv1::Sql_queryContext* Parse(TStringBuf input) {
Chars_.load(input.Data(), input.Size(), /* lenient = */ false);
Lexer_.reset();
Tokens_.setTokenSource(&Lexer_);
Parser_.reset();
return Parser_.sql_query();
}
void EnrichTableClusters(TColumnContext& column, const TUseContext& use) {
for (auto& table : column.Tables) {
if (table.Cluster.empty()) {
table.Cluster = use.Cluster;
}
}
}
antlr4::ANTLRInputStream Chars_;
G::TLexer Lexer_;
antlr4::CommonTokenStream Tokens_;
TDefaultYQLGrammar::TParser Parser_;
};
class TGlobalAnalysis: public IGlobalAnalysis {
public:
TGlobalContext Analyze(TCompletionInput input, TEnvironment env) override {
const bool isAnsiLexer = IsAnsiQuery(TString(input.Text));
return GetSpecialized(isAnsiLexer).Analyze(std::move(input), std::move(env));
}
private:
IGlobalAnalysis& GetSpecialized(bool isAnsiLexer) {
if (isAnsiLexer) {
return AnsiAnalysis_;
}
return DefaultAnalysis_;
}
TSpecializedGlobalAnalysis</* IsAnsiLexer = */ false> DefaultAnalysis_;
TSpecializedGlobalAnalysis</* IsAnsiLexer = */ true> AnsiAnalysis_;
};
IGlobalAnalysis::TPtr MakeGlobalAnalysis() {
return MakeHolder<TGlobalAnalysis>();
}
} // namespace NSQLComplete
template <>
void Out<NSQLComplete::TAliased<NSQLComplete::TTableId>>(IOutputStream& out, const NSQLComplete::TAliased<NSQLComplete::TTableId>& value) {
Out<NSQLComplete::TTableId>(out, value);
out << " AS " << value.Alias;
}
template <>
void Out<NSQLComplete::TColumnContext>(IOutputStream& out, const NSQLComplete::TColumnContext& value) {
out << "TColumnContext { ";
out << "Tables: " << JoinSeq(", ", value.Tables);
out << " }";
}
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