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#include "format.h"
#include "grammar.h"
#include <yql/essentials/sql/v1/complete/antlr4/vocabulary.h>
#include <util/generic/hash_set.h>
#include <util/charset/utf8.h>
namespace NSQLComplete {
namespace {
static const THashSet<std::string> Keywords = [] {
const auto& grammar = GetSqlGrammar();
const auto& vocabulary = grammar.GetVocabulary();
THashSet<std::string> keywords;
for (auto& token : grammar.GetKeywordTokens()) {
keywords.emplace(Display(vocabulary, token));
}
return keywords;
}();
static const THashSet<TString> TypeConstructors = {
"DECIMAL",
"OPTIONAL",
"TUPLE",
"STRUCT",
"VARIANT",
"LIST",
"STREAM",
"FLOW",
"DICT",
"SET",
"ENUM",
"RESOURCE",
"TAGGED",
"CALLABLE",
};
} // namespace
TString FormatKeywords(const TVector<TString>& seq) {
if (seq.empty()) {
return "";
}
size_t i = 0;
TString text = seq[i++];
if (2 <= seq.size() &&
TypeConstructors.contains(text) &&
(seq[i] == "<" || seq[i] == "(")) {
text.to_title();
text.append(seq[i]);
i += 1;
}
for (; i < seq.size(); ++i) {
const auto& token = seq[i];
if (Keywords.contains(token)) {
text += " ";
}
text += token;
}
return text;
}
TString Quoted(TString content) {
content.prepend('`');
content.append('`');
return content;
}
TString Unquoted(TString content) {
Y_ENSURE(2 <= content.size() && content.front() == '`' && content.back() == '`');
content.erase(0, 1);
content.pop_back();
return content;
}
} // namespace NSQLComplete
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