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41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
#include <Storages/checkAndGetLiteralArgument.h>
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#include <Core/Field.h>
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int BAD_ARGUMENTS;
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}
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template <typename T>
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T checkAndGetLiteralArgument(const ASTPtr & arg, const String & arg_name)
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{
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return checkAndGetLiteralArgument<T>(*arg->as<ASTLiteral>(), arg_name);
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}
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template <typename T>
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T checkAndGetLiteralArgument(const ASTLiteral & arg, const String & arg_name)
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{
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auto requested_type = Field::TypeToEnum<NearestFieldType<std::decay_t<T>>>::value;
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auto provided_type = arg.value.getType();
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if (requested_type != provided_type)
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throw Exception(
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ErrorCodes::BAD_ARGUMENTS,
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"Argument '{}' must be a literal with type {}, got {}",
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arg_name,
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fieldTypeToString(requested_type),
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fieldTypeToString(provided_type));
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return arg.value.safeGet<T>();
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}
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template String checkAndGetLiteralArgument(const ASTPtr &, const String &);
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template UInt64 checkAndGetLiteralArgument(const ASTPtr &, const String &);
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template UInt8 checkAndGetLiteralArgument(const ASTPtr &, const String &);
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template bool checkAndGetLiteralArgument(const ASTPtr &, const String &);
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template String checkAndGetLiteralArgument(const ASTLiteral &, const String &);
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}
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