mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-26 09:32:01 +00:00
150 lines
3.6 KiB
C++
150 lines
3.6 KiB
C++
#include <IO/WriteBufferFromOStream.h>
|
|
#include <IO/WriteBufferFromString.h>
|
|
#include <IO/WriteHelpers.h>
|
|
#include <IO/Operators.h>
|
|
#include <Common/SipHash.h>
|
|
#include <Parsers/IAST.h>
|
|
|
|
|
|
namespace DB
|
|
{
|
|
|
|
namespace ErrorCodes
|
|
{
|
|
extern const int TOO_BIG_AST;
|
|
extern const int TOO_DEEP_AST;
|
|
extern const int BAD_ARGUMENTS;
|
|
}
|
|
|
|
|
|
const char * IAST::hilite_keyword = "\033[1m";
|
|
const char * IAST::hilite_identifier = "\033[0;36m";
|
|
const char * IAST::hilite_function = "\033[0;33m";
|
|
const char * IAST::hilite_operator = "\033[1;33m";
|
|
const char * IAST::hilite_alias = "\033[0;32m";
|
|
const char * IAST::hilite_substitution = "\033[1;36m";
|
|
const char * IAST::hilite_none = "\033[0m";
|
|
|
|
|
|
size_t IAST::size() const
|
|
{
|
|
size_t res = 1;
|
|
for (const auto & child : children)
|
|
res += child->size();
|
|
|
|
return res;
|
|
}
|
|
|
|
size_t IAST::checkSize(size_t max_size) const
|
|
{
|
|
size_t res = 1;
|
|
for (const auto & child : children)
|
|
res += child->checkSize(max_size);
|
|
|
|
if (res > max_size)
|
|
throw Exception("AST is too big. Maximum: " + toString(max_size), ErrorCodes::TOO_BIG_AST);
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
IAST::Hash IAST::getTreeHash() const
|
|
{
|
|
SipHash hash_state;
|
|
updateTreeHash(hash_state);
|
|
IAST::Hash res;
|
|
hash_state.get128(res.first, res.second);
|
|
return res;
|
|
}
|
|
|
|
|
|
void IAST::updateTreeHash(SipHash & hash_state) const
|
|
{
|
|
updateTreeHashImpl(hash_state);
|
|
hash_state.update(children.size());
|
|
for (const auto & child : children)
|
|
child->updateTreeHash(hash_state);
|
|
}
|
|
|
|
|
|
void IAST::updateTreeHashImpl(SipHash & hash_state) const
|
|
{
|
|
auto id = getID();
|
|
hash_state.update(id.data(), id.size());
|
|
}
|
|
|
|
|
|
size_t IAST::checkDepthImpl(size_t max_depth, size_t level) const
|
|
{
|
|
size_t res = level + 1;
|
|
for (const auto & child : children)
|
|
{
|
|
if (level >= max_depth)
|
|
throw Exception("AST is too deep. Maximum: " + toString(max_depth), ErrorCodes::TOO_DEEP_AST);
|
|
res = std::max(res, child->checkDepthImpl(max_depth, level + 1));
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
|
|
void IAST::cloneChildren()
|
|
{
|
|
for (auto & child : children)
|
|
child = child->clone();
|
|
}
|
|
|
|
|
|
String IAST::getColumnName() const
|
|
{
|
|
WriteBufferFromOwnString write_buffer;
|
|
appendColumnName(write_buffer);
|
|
return write_buffer.str();
|
|
}
|
|
|
|
|
|
void IAST::FormatSettings::writeIdentifier(const String & name) const
|
|
{
|
|
WriteBufferFromOStream out(ostr, 32);
|
|
|
|
switch (identifier_quoting_style)
|
|
{
|
|
case IdentifierQuotingStyle::None:
|
|
{
|
|
if (always_quote_identifiers)
|
|
throw Exception("Incompatible arguments: always_quote_identifiers = true && identifier_quoting_style == IdentifierQuotingStyle::None",
|
|
ErrorCodes::BAD_ARGUMENTS);
|
|
writeString(name, out);
|
|
break;
|
|
}
|
|
case IdentifierQuotingStyle::Backticks:
|
|
{
|
|
if (always_quote_identifiers)
|
|
writeBackQuotedString(name, out);
|
|
else
|
|
writeProbablyBackQuotedString(name, out);
|
|
break;
|
|
}
|
|
case IdentifierQuotingStyle::DoubleQuotes:
|
|
{
|
|
if (always_quote_identifiers)
|
|
writeDoubleQuotedString(name, out);
|
|
else
|
|
writeProbablyDoubleQuotedString(name, out);
|
|
break;
|
|
}
|
|
case IdentifierQuotingStyle::BackticksMySQL:
|
|
{
|
|
if (always_quote_identifiers)
|
|
writeBackQuotedStringMySQL(name, out);
|
|
else
|
|
writeProbablyBackQuotedStringMySQL(name, out);
|
|
break;
|
|
}
|
|
}
|
|
|
|
out.next();
|
|
}
|
|
|
|
}
|