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#include "translation_settings.h"
#include <yql/essentials/core/issue/yql_issue.h>
#include <yql/essentials/utils/utf8.h>
#include <library/cpp/deprecated/split/split_iterator.h>
#include <util/string/split.h>
#include <util/system/env.h>
namespace {
bool InTestEnvironment() {
return GetEnv("YQL_LOCAL_ENVIRONMENT") || GetEnv("YA_TEST_RUNNER");
}
using namespace NSQLTranslation;
class TAlwaysDiallowPolicy : public ISqlFeaturePolicy {
public:
TAlwaysDiallowPolicy() = default;
bool Allow() const override {
return false;
}
};
class TAlwaysAllowPolicy : public ISqlFeaturePolicy {
public:
TAlwaysAllowPolicy() = default;
bool Allow() const override {
return true;
}
};
}
namespace NSQLTranslation {
ISqlFeaturePolicy::TPtr ISqlFeaturePolicy::MakeAlwaysDisallow() {
return new TAlwaysDiallowPolicy;
}
ISqlFeaturePolicy::TPtr ISqlFeaturePolicy::MakeAlwaysAllow() {
return new TAlwaysAllowPolicy;
}
ISqlFeaturePolicy::TPtr ISqlFeaturePolicy::Make(bool allow) {
return allow ? MakeAlwaysAllow() : MakeAlwaysDisallow();
}
TTranslationSettings::TTranslationSettings()
: ModuleMapping({{"core", "/lib/yql/core.yql"}})
, BindingsMode(EBindingsMode::ENABLED)
, Mode(ESqlMode::QUERY)
, MaxErrors(SQL_MAX_PARSER_ERRORS)
, EndOfQueryCommit(true)
, EnableGenericUdfs(true)
, SyntaxVersion(1)
, AnsiLexer(false)
, Antlr4Parser(false)
, PgParser(false)
, InferSyntaxVersion(false)
, V0Behavior(EV0Behavior::Disable)
, V0ForceDisable(InTestEnvironment())
, PGDisable(false)
, WarnOnV0(true)
, TestAntlr4(false)
, V0WarnAsError(ISqlFeaturePolicy::MakeAlwaysDisallow())
, DqDefaultAuto(ISqlFeaturePolicy::MakeAlwaysDisallow())
, BlockDefaultAuto(ISqlFeaturePolicy::MakeAlwaysDisallow())
, AssumeYdbOnClusterWithSlash(false)
{}
bool ParseTranslationSettings(const TString& query, TTranslationSettings& settings, NYql::TIssues& issues) {
if (!NYql::IsUtf8(query)) {
issues.AddIssue(NYql::YqlIssue(NYql::TPosition(0, 0), NYql::TIssuesIds::DEFAULT_ERROR, "Invalid UTF8 input"));
return false;
}
if (settings.Flags.contains("Antlr4")) {
settings.Antlr4Parser = true;
}
TSplitDelimiters lineDelimiters("\n\r");
TDelimitersSplit linesSplit(query, lineDelimiters);
auto lineIterator = linesSplit.Iterator();
auto lineNumber = 0;
while (!lineIterator.Eof()) {
const TString& line = lineIterator.NextString();
++lineNumber;
TVector<TStringBuf> parts;
TSetDelimiter<const char> partsDelimiters(" \t");
Split(line, partsDelimiters, parts);
if (parts.empty()) {
continue;
}
if (!parts[0].StartsWith("--!")) {
break;
}
if (parts.size() > 1) {
issues.AddIssue(NYql::YqlIssue(NYql::TPosition(0, lineNumber), NYql::TIssuesIds::DEFAULT_ERROR,
"Bad translation settings format"));
return false;
}
auto value = TString(parts[0].SubString(3, TString::npos));
if (value.empty()) {
continue;
}
if ((value == "syntax_v0" || value == "syntax_v1") && !settings.InferSyntaxVersion) {
issues.AddIssue(NYql::YqlIssue(NYql::TPosition(0, lineNumber), NYql::TIssuesIds::DEFAULT_ERROR,
"Explicit syntax version is not allowed"));
return false;
}
if (value == "syntax_v0") {
if (settings.V0ForceDisable || settings.V0Behavior == NSQLTranslation::EV0Behavior::Disable) {
issues.AddIssue(NYql::YqlIssue(NYql::TPosition(0, lineNumber), NYql::TIssuesIds::DEFAULT_ERROR,
"V0 syntax is disabled"));
return false;
}
settings.SyntaxVersion = 0;
} else if (value == "syntax_v1") {
settings.SyntaxVersion = 1;
} else if (value == "ansi_lexer") {
settings.AnsiLexer = true;
} else if (value == "antlr4_parser") {
settings.Antlr4Parser = true;
} else if (value == "antlr3_parser") {
settings.Antlr4Parser = false;
} else if (value == "syntax_pg") {
settings.PgParser = true;
} else {
issues.AddIssue(NYql::YqlIssue(NYql::TPosition(0, lineNumber), NYql::TIssuesIds::DEFAULT_ERROR,
TStringBuilder() << "Unknown SQL translation setting: " << value));
return false;
}
}
return true;
}
} // namespace NSQLTranslation
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