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usql update

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This commit is contained in:
VaclavT
2022-01-16 19:54:19 +01:00
parent a45423692e
commit c01571bb84
13 changed files with 347 additions and 274 deletions
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88
usql/parser.cpp
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@@ -318,58 +318,58 @@ namespace usql {
}
std::vector<ColOrderNode> Parser::parse_order_by_clause() {
std::vector<ColOrderNode> order_cols;
if (m_lexer.tokenType() == TokenType::keyword_order) {
m_lexer.skipToken(TokenType::keyword_order);
m_lexer.skipToken(TokenType::keyword_by);
std::vector<ColOrderNode> order_cols;
if (m_lexer.tokenType() == TokenType::keyword_order) {
m_lexer.skipToken(TokenType::keyword_order);
m_lexer.skipToken(TokenType::keyword_by);
do {
bool asc = true;
do {
bool asc = true;
auto cspec_token_type = m_lexer.tokenType();
std::string cspec_token = m_lexer.consumeToken().token_string;
if (m_lexer.tokenType() == TokenType::keyword_asc) {
m_lexer.skipToken(TokenType::keyword_asc);
} else if (m_lexer.tokenType() == TokenType::keyword_desc) {
m_lexer.skipToken(TokenType::keyword_desc);
asc = false;
}
switch (cspec_token_type) {
case TokenType::int_number:
order_cols.emplace_back(std::stoi(cspec_token), asc);
break;
case TokenType::identifier:
order_cols.emplace_back(cspec_token, asc);
break;
default:
throw Exception("order by column can be either column m_index or identifier");
}
m_lexer.skipTokenOptional(TokenType::comma);
} while (m_lexer.tokenType() != TokenType::eof && m_lexer.tokenType() != TokenType::keyword_offset && m_lexer.tokenType() != TokenType::keyword_limit);
}
auto cspec_token_type = m_lexer.tokenType();
std::string cspec_token = m_lexer.consumeToken().token_string;
if (m_lexer.tokenType() == TokenType::keyword_asc) {
m_lexer.skipToken(TokenType::keyword_asc);
} else if (m_lexer.tokenType() == TokenType::keyword_desc) {
m_lexer.skipToken(TokenType::keyword_desc);
asc = false;
}
switch (cspec_token_type) {
case TokenType::int_number:
order_cols.emplace_back(std::stoi(cspec_token), asc);
break;
case TokenType::identifier:
order_cols.emplace_back(cspec_token, asc);
break;
default:
throw Exception("order by column can be either column m_index or identifier");
}
m_lexer.skipTokenOptional(TokenType::comma);
} while (m_lexer.tokenType() != TokenType::eof && m_lexer.tokenType() != TokenType::keyword_offset && m_lexer.tokenType() != TokenType::keyword_limit);
}
return order_cols;
return order_cols;
}
OffsetLimitNode Parser::parse_offset_limit_clause() {
int offset = 0;
int limit = 999999999;
size_t offset = 0;
size_t limit = SIZE_MAX;
if (m_lexer.tokenType() == TokenType::keyword_offset) {
m_lexer.skipToken(TokenType::keyword_offset);
offset = std::stoi(m_lexer.consumeToken(TokenType::int_number).token_string);
}
if (m_lexer.tokenType() == TokenType::keyword_offset) {
m_lexer.skipToken(TokenType::keyword_offset);
offset = std::stoi(m_lexer.consumeToken(TokenType::int_number).token_string);
}
if (m_lexer.tokenType() == TokenType::keyword_limit) {
m_lexer.skipToken(TokenType::keyword_limit);
limit = std::stoi(m_lexer.consumeToken(TokenType::int_number).token_string);
}
if (m_lexer.tokenType() == TokenType::keyword_limit) {
m_lexer.skipToken(TokenType::keyword_limit);
limit = std::stoi(m_lexer.consumeToken(TokenType::int_number).token_string);
}
return OffsetLimitNode{offset, limit};
return OffsetLimitNode{offset, limit};
}