expression_type.h

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#pragma once
 
#include <cstdint>
#include <string>
 
namespace kuzu {
namespace common {
 
enum class ExpressionType : uint8_t {
 // Boolean Connection Expressions
 OR = 0,
 XOR = 1,
 AND = 2,
 NOT = 3,
 
 // Comparison Expressions
 EQUALS = 10,
 NOT_EQUALS = 11,
 GREATER_THAN = 12,
 GREATER_THAN_EQUALS = 13,
 LESS_THAN = 14,
 LESS_THAN_EQUALS = 15,
 
 // Null Operator Expressions
 IS_NULL = 50,
 IS_NOT_NULL = 51,
 
 PROPERTY = 60,
 
 LITERAL = 70,
 
 STAR = 80,
 
 VARIABLE = 90,
 PATH = 91,
 PATTERN = 92, // Node & Rel pattern
 
 PARAMETER = 100,
 
 FUNCTION = 110,
 
 AGGREGATE_FUNCTION = 130,
 
 SUBQUERY = 190,
 
 CASE_ELSE = 200,
 
 GRAPH = 210,
 
 LAMBDA = 220,
 
 // NOTE: this enum has type uint8_t so don't assign over 255.
};
 
struct ExpressionTypeUtil {
 static bool isUnary(ExpressionType type);
 static bool isBinary(ExpressionType type);
 static bool isBoolean(ExpressionType type);
 static bool isComparison(ExpressionType type);
 static bool isNullOperator(ExpressionType type);
 
 static ExpressionType reverseComparisonDirection(ExpressionType type);
 
 static std::string toString(ExpressionType type);
};
 
} // namespace common
} // namespace kuzu