parser

Documentation

Overview

Package parser includes the actual parsing logic using cgo to access libpg_query.

Index

• func DeparseFromProtobuf(input []byte) (result string, err error)
• func FingerprintToHexStr(input string) (result string, err error)
• func FingerprintToUInt64(input string) (result uint64, err error)
• func HashXXH3_64(input []byte, seed uint64) (result uint64)
• func Normalize(input string) (result string, err error)
• func NormalizeUtility(input string) (result string, err error)
• func ParsePlPgSqlToJSON(input string) (result string, err error)
• func ParseToJSON(input string) (result string, err error)
• func ParseToProtobuf(input string) (result []byte, err error)
• func ScanToProtobuf(input string) (result []byte, err error)
• func SplitWithParser(input string, trimSpace bool) (result []string, err error)
• func SplitWithScanner(input string, trimSpace bool) (result []string, err error)
• type Error
  • func (e *Error) Error() string

Functions

func DeparseFromProtobuf

func DeparseFromProtobuf(input []byte) (result string, err error)

DeparseFromProtobuf - Deparses the given Protobuf format parse tree into a SQL statement

func FingerprintToHexStr

func FingerprintToHexStr(input string) (result string, err error)

FingerprintToHexStr - Fingerprint the passed SQL statement using the C extension and returns result as hex string

func FingerprintToUInt64

func FingerprintToUInt64(input string) (result uint64, err error)

FingerprintToUInt64 - Fingerprint the passed SQL statement using the C extension and returns result as uint64

func HashXXH3_64

func HashXXH3_64(input []byte, seed uint64) (result uint64)

HashXXH3_64 - Helper method to run XXH3 hash function (64-bit variant) on the given bytes, with the specified seed

func Normalize

func Normalize(input string) (result string, err error)

Normalize the passed SQL statement to replace constant values with ? characters

func NormalizeUtility

func NormalizeUtility(input string) (result string, err error)

Normalize the passed utility statement to replace constant values with ? characters

func ParsePlPgSqlToJSON

func ParsePlPgSqlToJSON(input string) (result string, err error)

ParsePlPgSqlToJSON - Parses the given PL/pgSQL function statement into a parse tree (JSON format)

func ParseToJSON

func ParseToJSON(input string) (result string, err error)

ParseToJSON - Parses the given SQL statement into a parse tree (JSON format)

func ParseToProtobuf

func ParseToProtobuf(input string) (result []byte, err error)

ParseToProtobuf - Parses the given SQL statement into a parse tree (Protobuf format)

func ScanToProtobuf

func ScanToProtobuf(input string) (result []byte, err error)

Scans the given SQL statement into a protobuf ScanResult

func SplitWithParser

func SplitWithParser(input string, trimSpace bool) (result []string, err error)

func SplitWithScanner

func SplitWithScanner(input string, trimSpace bool) (result []string, err error)

Types

type Error

type Error struct {
	Message   string // exception message
	Funcname  string // source function of exception (e.g. SearchSysCache)
	Filename  string // source of exception (e.g. parse.l)
	Lineno    int    // source of exception (e.g. 104)
	Cursorpos int    // char in query at which exception occurred
	Context   string // additional context (optional, can be NULL)
}

func (*Error) Error

func (e *Error) Error() string