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Update ICompressionCodec.cpp

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alesapin 2020-09-16 11:18:42 +03:00 committed by GitHub
parent 74c0b6eb76
commit da386990fe
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1 changed files with 7 additions and 4 deletions
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11
src/Compression/ICompressionCodec.cpp
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@ -24,7 +24,9 @@ void ICompressionCodec::setCodecDescription(const String & codec_name, const AST
{
std::shared_ptr<ASTFunction> result = std::make_shared<ASTFunction>();
result->name = "CODEC";
/// Special case for codec Multiple, which doens't have name. It's just list
/// of other codecs.
if (codec_name.empty())
{
ASTPtr codec_desc = std::make_shared<ASTExpressionList>();
@ -35,9 +37,9 @@ void ICompressionCodec::setCodecDescription(const String & codec_name, const AST
else
{
ASTPtr codec_desc;
if (arguments.empty())
if (arguments.empty()) /// Codec without arguments is just ASTIdentifier
codec_desc = std::make_shared<ASTIdentifier>(codec_name);
else
else /// Codec with arguments represented as ASTFunction
codec_desc = makeASTFunction(codec_name, arguments);
result->arguments = std::make_shared<ASTExpressionList>();
@ -62,9 +64,10 @@ ASTPtr ICompressionCodec::getCodecDesc() const
{
auto arguments = getFullCodecDesc()->as<ASTFunction>()->arguments;
/// If it has exactly one argument, than it's single codec, return it
if (arguments->children.size() == 1)
return arguments->children[0];
else
else /// Otherwise we have multiple codecs and return them as expression list
return arguments;
}