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package sqlancer.doris.ast;

import java.util.ArrayList;

import java.util.List;

import java.util.stream.Collectors;

import java.util.stream.Stream;

import sqlancer.Randomly;

import sqlancer.doris.DorisSchema.DorisDataType;

import sqlancer.doris.gen.DorisNewExpressionGenerator;

public class DorisFunctionOperation implements DorisExpression {

private DorisFunction function;

private List<DorisExpression> args;

// https://doris.apache.org/zh-CN/docs/dev/summary/basic-summary

public enum DorisFunction {

// Array functions, https://doris.apache.org/docs/dev/sql-manual/sql-functions/array-functions/array

// Skip now

// Date functions, https://doris.apache.org/docs/dev/sql-manual/sql-functions/date-time-functions/convert_tz/

CONVERT_TZ(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

CURDATE(false, DorisDataType.DATE), CURRENT_DATE(false, DorisDataType.DATE),

CURTIME(false, DorisDataType.VARCHAR), CURRENT_TIME(false, DorisDataType.VARCHAR),

CURRENT_TIMESTAMP(false, DorisDataType.DATETIME), LOCALTIME(false, DorisDataType.DATETIME),

LOCALTIMESTAMP(false, DorisDataType.DATETIME), NOW(false, DorisDataType.DATETIME),

YEAR(false, DorisDataType.INT, DorisDataType.DATETIME),

QUARTER(false, DorisDataType.INT, DorisDataType.DATETIME),

MONTH(false, DorisDataType.INT, DorisDataType.DATETIME), DAY(false, DorisDataType.INT, DorisDataType.DATETIME),

DAYOFYEAR(false, DorisDataType.INT, DorisDataType.DATETIME),

DAYOFMONTH(false, DorisDataType.INT, DorisDataType.DATETIME),

DAYOFWEEK(false, DorisDataType.INT, DorisDataType.DATETIME), WEEK(false, DorisDataType.INT, DorisDataType.DATE),

WEEKDAY(false, DorisDataType.INT, DorisDataType.DATE),

WEEKOFYEAR(false, DorisDataType.INT, DorisDataType.DATETIME),

YEARWEEK(false, DorisDataType.INT, DorisDataType.DATE),

DAYNAME(false, DorisDataType.VARCHAR, DorisDataType.DATETIME),

MONTHNAME(false, DorisDataType.VARCHAR, DorisDataType.DATETIME),

HOUR(false, DorisDataType.INT, DorisDataType.DATETIME),

MINUTE(false, DorisDataType.INT, DorisDataType.DATETIME),

SECOND(false, DorisDataType.INT, DorisDataType.DATETIME),

FROM_DAYS(false, DorisDataType.DATE, DorisDataType.INT),

LAST_DAYS(false, DorisDataType.DATE, DorisDataType.DATETIME),

TO_MONDAY(false, DorisDataType.DATE, DorisDataType.DATETIME),

FROM_UNIXTIME(false, DorisDataType.DATETIME, DorisDataType.INT),

UNIX_TIMESTAMP(false, DorisDataType.INT, DorisDataType.DATETIME), UTC_TIMESTAMP(false, DorisDataType.DATETIME),

TO_DATE(false, DorisDataType.DATE, DorisDataType.DATETIME),

TO_DAYS(false, DorisDataType.INT, DorisDataType.DATETIME),

TIME_TO_SEC(false, DorisDataType.INT, DorisDataType.DATETIME),

// EXTRACT(1), // select extract(year from '2022-09-22 17:01:30') as year, currently not considered

MAKEDATE(false, DorisDataType.DATE, DorisDataType.INT, DorisDataType.INT),

STR_TO_DATE(false, DorisDataType.DATETIME, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

TIME_ROUND(false, DorisDataType.DATETIME, DorisDataType.DATETIME),

TIME_DIFF(false, DorisDataType.VARCHAR, DorisDataType.DATETIME, DorisDataType.DATETIME),

TIMESTAMPADD(false, DorisDataType.DATETIME, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.DATETIME),

TIMESTAMPDIFF(false, DorisDataType.VARCHAR, DorisDataType.DATETIME, DorisDataType.DATETIME),

DATE_ADD(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.VARCHAR),

DATE_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.VARCHAR),

DATE_TRUNC(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.VARCHAR),

DATE_FORMAT(false, DorisDataType.VARCHAR, DorisDataType.DATETIME, DorisDataType.VARCHAR),

DATEDIFF(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.DATETIME),

// MICROSECONDS_ADD(false),

MINUTES_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

MINUTES_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

MINUTES_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

SECONDS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

SECONDS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

SECONDS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

HOURS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

HOURS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

HOURS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

DAYS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

DAYS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

DAYS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

WEEKS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

WEEKS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

WEEKS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

MONTHS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

MONTHS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

MONTHS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

YEARS_ADD(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

YEARS_DIFF(false, DorisDataType.INT, DorisDataType.DATETIME, DorisDataType.DATETIME),

YEARS_SUB(false, DorisDataType.DATETIME, DorisDataType.DATETIME, DorisDataType.INT),

// GIS functions, https://doris.apache.org/docs/dev/sql-manual/sql-functions/spatial-functions/st_x

// Skip now

// String functions, https://doris.apache.org/docs/dev/sql-manual/sql-functions/string-functions/to_base64

TO_BASE64(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

FROM_BASE64(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

ASCII(false, DorisDataType.INT, DorisDataType.VARCHAR), LENGTH(false, DorisDataType.INT, DorisDataType.VARCHAR),

BIT_LENGTH(false, DorisDataType.INT, DorisDataType.VARCHAR),

CHAR_LENGTH(false, DorisDataType.INT, DorisDataType.VARCHAR),

LPAD(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.VARCHAR),

RPAD(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.VARCHAR),

LOWER(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

LCASE(false, DorisDataType.INT, DorisDataType.VARCHAR),

UPPER(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

UCASE(false, DorisDataType.INT, DorisDataType.VARCHAR),

INITCAP(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

REPEAT(false, DorisDataType.VARCHAR, DorisDataType.INT),

REVERSE(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

CHAR(true, DorisDataType.VARCHAR, DorisDataType.INT),

CONCAT(true, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

CONCAT_WS(true, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

SUBSTR(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.INT),

SUBSTRING(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

SUB_REPLACE(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

APPEND_TRAILING_CHAR_IF_ABSENT(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

ENDS_WITH(false, DorisDataType.BOOLEAN, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

STARTS_WITH(false, DorisDataType.BOOLEAN, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

TRIM(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

LTRIM(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

RTRIM(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

NULL_OR_EMPTY(false, DorisDataType.BOOLEAN, DorisDataType.VARCHAR),

NOT_NULL_OR_EMPTY(false, DorisDataType.BOOLEAN, DorisDataType.VARCHAR),

HEX(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

UNHEX(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

ELT(true, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.VARCHAR),

INSTR(false, DorisDataType.INT, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

LOCATE(false, DorisDataType.INT, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

// FIELD(1, true),

FIND_IN_SET(false, DorisDataType.INT, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

REPLACE(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

LEFT(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

RIGHT(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

STRLEFT(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

STRRIGHT(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

SPLIT_PART(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

// SPLIT_BY_STRING(2),

SUBSTRING_INDEX(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.INT),

MONEY_FORMAT(false, DorisDataType.VARCHAR, DorisDataType.DECIMAL),

PARSE_URL(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

CONVERT_TO(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

EXTRACT_URL_PARAMETER(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

UUID(false, DorisDataType.VARCHAR), SPACE(false, DorisDataType.VARCHAR, DorisDataType.INT),

// SLEEP(1),

ESQUERY(false, DorisDataType.BOOLEAN, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

MASK(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

MASK_FIRST_N(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

MASK_LAST_N(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

// MULTI_SEARCH_ALL_POSITIONS(2),

// MULTI_MATCH_ANY(2),

// BITMAP functions, https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/bitmap-functions/to_bitmap

// skip now

// Bitwise functions, https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/bitwise-functions/bitand

BITAND(false, DorisDataType.INT, DorisDataType.INT, DorisDataType.INT),

BITOR(false, DorisDataType.INT, DorisDataType.INT, DorisDataType.INT),

BITXOR(false, DorisDataType.INT, DorisDataType.INT, DorisDataType.INT),

BITNOT(false, DorisDataType.INT, DorisDataType.INT),

// condition funtions

// case(),

COALESCE(true, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

IF(false, DorisDataType.VARCHAR, DorisDataType.BOOLEAN, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

IFNULL(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

NVL(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

NULLIF(false, DorisDataType.VARCHAR, DorisDataType.VARCHAR, DorisDataType.VARCHAR),

// JSON Functions, https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/json-functions/jsonb_parse

// skip now

// Hash functions,

// https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/hash-functions/murmur_hash3_32

MURMUR_HASH3_32(true, DorisDataType.INT, DorisDataType.VARCHAR),

MURMUR_HASH3_64(true, DorisDataType.INT, DorisDataType.VARCHAR),

// HLL functions, https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/hll-functions/hll_cardinality

// skip now

// Math functions, https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/math-functions/conv

CONV(false, DorisDataType.VARCHAR, DorisDataType.INT, DorisDataType.INT, DorisDataType.INT),

BIN(false, DorisDataType.VARCHAR, DorisDataType.INT), SIN(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

COS(false, DorisDataType.FLOAT, DorisDataType.FLOAT), TAN(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

ASIN(false, DorisDataType.FLOAT, DorisDataType.FLOAT), ACOS(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

ATAN(false, DorisDataType.FLOAT, DorisDataType.FLOAT), E(false, DorisDataType.FLOAT),

PI(false, DorisDataType.FLOAT), EXP(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

LOG(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.FLOAT),

LOG2(false, DorisDataType.FLOAT, DorisDataType.FLOAT), LN(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

LOG10(false, DorisDataType.FLOAT, DorisDataType.FLOAT), CEIL(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

FLOOR(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

PMOD(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.FLOAT),

ROUND(false, DorisDataType.INT, DorisDataType.FLOAT),

ROUND_BANKERS(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.INT),

TRUNCATE(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.INT),

ABS(false, DorisDataType.FLOAT, DorisDataType.FLOAT), SQRT(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

CBRT(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

POW(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.FLOAT),

DEGREES(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

RADIANS(false, DorisDataType.FLOAT, DorisDataType.FLOAT), SIGN(false, DorisDataType.INT, DorisDataType.FLOAT),

POSTIVE(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

NEGATIVE(false, DorisDataType.FLOAT, DorisDataType.FLOAT),

GREATEST(true, DorisDataType.FLOAT, DorisDataType.FLOAT), LEAST(true, DorisDataType.FLOAT, DorisDataType.FLOAT),

RANDOM(false, DorisDataType.FLOAT), MOD(false, DorisDataType.FLOAT, DorisDataType.FLOAT, DorisDataType.FLOAT);

// encrypt-digest-functions,

// https://doris.apache.org/zh-CN/docs/dev/sql-manual/sql-functions/encrypt-digest-functions/aes

// skip now

private boolean isVariadic; // If isVALid is true, then treat the last argumentTypes as an infinite type

private DorisDataType returnType;

private DorisDataType[] argumentTypes;

private String functionName;

DorisFunction(String functionName, boolean isVariadic, DorisDataType returnType,

DorisDataType... argumentTypes) {

this.functionName = functionName;

this.isVariadic = isVariadic;

this.returnType = returnType;

this.argumentTypes = argumentTypes.clone();

}

DorisFunction(boolean isVariadic, DorisDataType returnType, DorisDataType... argumentTypes) {

this.functionName = toString();

this.isVariadic = isVariadic;

this.returnType = returnType;

this.argumentTypes = argumentTypes.clone();

}

DorisFunction(boolean isVariadic, DorisDataType returnType) {

this.functionName = toString();

this.isVariadic = isVariadic;

this.returnType = returnType;

this.argumentTypes = null;

}

public String getFunctionName() {

return functionName;

}

public static DorisFunction getRandom() {

return Randomly.fromOptions(values());

}

public boolean isVariadic() {

return isVariadic;

}

public boolean isCompatibleWithReturnType(DorisDataType returnType) {

return this.returnType == returnType;

}

public DorisDataType[] getArgumentTypes() {

if (argumentTypes == null) {

return null;

}

return argumentTypes.clone();

}

public DorisFunctionOperation getCall(DorisDataType returnType, DorisNewExpressionGenerator gen, int depth) {

List<DorisExpression> arguments = new ArrayList<>();

if (getArgumentTypes() != null) {

Stream.of(getArgumentTypes()).forEach(arg -> arguments.add(gen.generateExpression(arg, depth + 1)));

}

return new DorisFunctionOperation(this, arguments);

}

public static List<DorisFunction> getFunctionsCompatibleWith(DorisDataType returnType) {

return Stream.of(values()).filter(f -> f.isCompatibleWithReturnType(returnType))

.collect(Collectors.toList());

}

}

public DorisFunctionOperation(DorisFunction function, List<DorisExpression> args) {

this.function = function;

this.args = args;

}

public List<DorisExpression> getArgs() {

return args;

}

public DorisFunction getFunction() {

return function;

}

}