parse

Documentation

Index

• func LastStates(input io.Reader) (ParseState, ParseState, error)
• func Parse(input io.Reader) (sql.Node, error)
• type Associativity
• type Lexer
  • func NewLexer(input io.Reader) *Lexer
  • func (l *Lexer) Backup()
  • func (l *Lexer) Next() *Token
  • func (l *Lexer) Run() error
• type ParseState
• type Token
  • func NewToken(typ TokenType, value string, line, pos uint) *Token
• type TokenType
  • func (i TokenType) String() string

Functions

func LastStates

func LastStates(input io.Reader) (ParseState, ParseState, error)

func Parse

func Parse(input io.Reader) (sql.Node, error)

Types

type Associativity

type Associativity byte

const (
	LeftAssoc Associativity = 1 << iota
	RightAssoc
)

type Lexer

type Lexer struct {
	// contains filtered or unexported fields
}

func NewLexer

func NewLexer(input io.Reader) *Lexer

func (*Lexer) Backup

func (l *Lexer) Backup()

func (*Lexer) Next

func (l *Lexer) Next() *Token

func (*Lexer) Run

func (l *Lexer) Run() error

type ParseState

type ParseState uint

const (
	NilState ParseState = iota
	ErrorState
	SelectState
	SelectFieldList
	FromState
	FromRelationState
	WhereState
	WhereClauseState
	OrderState
	OrderByState
	OrderClauseState
	LimitState
	LimitNumberState
	DoneState

	ExprState
	ExprEndState
)

type Token

type Token struct {
	Type  TokenType
	Value string
	Line  uint
	Pos   uint
}

func NewToken

func NewToken(typ TokenType, value string, line, pos uint) *Token

type TokenType

type TokenType uint

const (
	ErrorToken TokenType = iota
	EOFToken
	LeftParenToken
	RightParenToken
	CommaToken
	DotToken
	KeywordToken
	IdentifierToken
	IntToken
	FloatToken
	StringToken
	OpToken
	FunctionToken
)

func (TokenType) String

func (i TokenType) String() string