sqlparser

package
v0.15.5 Latest Latest
Warning

This package is not in the latest version of its module.

 Go to latest Published: Aug 10, 2018 License: MIT, MIT Imports: 7 Imported by: 6

Documentation

Index

Constants

View Source 
const (
	AST_FOR_UPDATE = " for update"
	AST_SHARE_MODE = " lock in share mode"
)

Select.Lock

View Source 
const (
	AST_UNION     = "union"
	AST_UNION_ALL = "union all"
	AST_SET_MINUS = "minus"
	AST_EXCEPT    = "except"
	AST_INTERSECT = "intersect"
)

Union.Type

View Source 
const (
	AST_CREATE = "create"
	AST_ALTER  = "alter"
	AST_DROP   = "drop"
	AST_RENAME = "rename"
)
View Source 
const (
	AST_JOIN          = "join"
	AST_STRAIGHT_JOIN = "straight_join"
	AST_LEFT_JOIN     = "left join"
	AST_RIGHT_JOIN    = "right join"
	AST_CROSS_JOIN    = "cross join"
	AST_NATURAL_JOIN  = "natural join"
)

JoinTableExpr.Join

View Source 
const (
	AST_USE    = "use"
	AST_IGNORE = "ignore"
	AST_FORCE  = "force"
)
View Source 
const (
	AST_WHERE  = "where"
	AST_HAVING = "having"
)

Where.Type

View Source 
const (
	AST_EQ       = "="
	AST_LT       = "<"
	AST_GT       = ">"
	AST_LE       = "<="
	AST_GE       = ">="
	AST_NE       = "!="
	AST_NSE      = "<=>"
	AST_IN       = "in"
	AST_NOT_IN   = "not in"
	AST_LIKE     = "like"
	AST_NOT_LIKE = "not like"
)

ComparisonExpr.Operator

View Source 
const (
	AST_BETWEEN     = "between"
	AST_NOT_BETWEEN = "not between"
)

RangeCond.Operator

View Source 
const (
	AST_IS_NULL     = "is null"
	AST_IS_NOT_NULL = "is not null"
)

NullCheck.Operator

View Source 
const (
	AST_BITAND = '&'
	AST_BITOR  = '|'
	AST_BITXOR = '^'
	AST_PLUS   = '+'
	AST_MINUS  = '-'
	AST_MULT   = '*'
	AST_DIV    = '/'
	AST_MOD    = '%'
)

BinaryExpr.Operator

View Source 
const (
	AST_UPLUS  = '+'
	AST_UMINUS = '-'
	AST_TILDA  = '~'
)

UnaryExpr.Operator

View Source 
const (
	AST_ASC  = "asc"
	AST_DESC = "desc"
)

Order.Direction

View Source 
const ADMIN = 57415
View Source 
const ALL = 57359
View Source 
const ALTER = 57421
View Source 
const AND = 57401
View Source 
const AS = 57361
View Source 
const ASC = 57368
View Source 
const (
	AST_DISTINCT = "distinct "
)

Select.Distinct

View Source 
const BEGIN = 57410
View Source 
const BETWEEN = 57366
View Source 
const BY = 57356
View Source 
const CASE = 57405
View Source 
const COMMENT = 57381
View Source 
const COMMIT = 57411
View Source 
const CREATE = 57420
View Source 
const CROSS = 57396
View Source 
const DATABASES = 57417
View Source 
const DEFAULT = 57374
View Source 
const DELETE = 57350
View Source 
const DESC = 57369
View Source 
const DISTINCT = 57360
View Source 
const DROP = 57422
View Source 
const DUPLICATE = 57372
View Source 
const ELSE = 57408
View Source 
const END = 57409
View Source 
const EOFCHAR = 0x100
View Source 
const EXCEPT = 57388
View Source 
const EXISTS = 57362
View Source 
const FOR = 57358
View Source 
const FORCE = 57399
View Source 
const FROM = 57351
View Source 
const GE = 57383
View Source 
const GROUP = 57353
View Source 
const HAVING = 57354
View Source 
const ID = 57377
View Source 
const IF = 57429
View Source 
const IGNORE = 57428
View Source 
const IN = 57363
View Source 
const INDEX = 57425
View Source 
const INNER = 57394
View Source 
const INSERT = 57348
View Source 
const INTERSECT = 57389
View Source 
const INTO = 57371
View Source 
const IS = 57364
View Source 
const JOIN = 57390
View Source 
const KEY = 57373
View Source 
const LE = 57382
View Source 
const LEFT = 57392
View Source 
const LEX_ERROR = 57346
View Source 
const LIKE = 57365
View Source 
const LIMIT = 57357
View Source 
const LOCK = 57376
View Source 
const MINUS = 57387
View Source 
const NAMES = 57413
View Source 
const NATURAL = 57397
View Source 
const NE = 57384
View Source 
const NOT = 57403
View Source 
const NULL = 57367
View Source 
const NULL_SAFE_EQUAL = 57385
View Source 
const NUMBER = 57379
View Source 
const ON = 57400
View Source 
const OR = 57402
View Source 
const ORDER = 57355
View Source 
const OUTER = 57395
View Source 
const PROXY = 57419
View Source 
const RENAME = 57423
View Source 
const REPLACE = 57414
View Source 
const RIGHT = 57393
View Source 
const ROLLBACK = 57412
View Source 
const SELECT = 57347
View Source 
const SET = 57375
View Source 
const SHOW = 57416
View Source 
const STRAIGHT_JOIN = 57391
View Source 
const STRING = 57378
View Source 
const TABLE = 57424
View Source 
const TABLES = 57418
View Source 
const THEN = 57407
View Source 
const TO = 57427
View Source 
const UNARY = 57404
View Source 
const UNION = 57386
View Source 
const UNIQUE = 57430
View Source 
const UPDATE = 57349
View Source 
const USE = 57398
View Source 
const USING = 57431
View Source 
const VALUES = 57370
View Source 
const VALUE_ARG = 57380
View Source 
const VIEW = 57426
View Source 
const WHEN = 57406
View Source 
const WHERE = 57352

Variables

View Source 
var (
	SHARE        = []byte("share")
	MODE         = []byte("mode")
	IF_BYTES     = []byte("if")
	VALUES_BYTES = []byte("values")
)

Functions

func AsInterface 

func AsInterface(node ValExpr) (interface{}, error)

AsInterface converts the ValExpr to an interface. It converts ValTuple to []interface{}, ValArg to string, StrVal to sqltypes.String, NumVal to sqltypes.Numeric. Otherwise, it returns an error.

func EncodeValue 

func EncodeValue(buf *bytes.Buffer, value interface{}) error

func ForceEOF 

func ForceEOF(yylex interface{})

func GetColName 

func GetColName(node Expr) string

GetColName returns the column name, only if it's a simple expression. Otherwise, it returns "".

func GetDBName 

func GetDBName(sql string) (string, error)

GetDBName parses the specified DML and returns the db name if it was used to qualify the table name. It returns an error if parsing fails or if the statement is not a DML.

func GetTableName 

func GetTableName(node SimpleTableExpr) string

GetTableName returns the table name from the SimpleTableExpr only if it's a simple expression. Otherwise, it returns "".

func HasINClause 

func HasINClause(conditions []BoolExpr) bool

HasINCaluse returns true if an yof the conditions has an IN clause.

func IsColName 

func IsColName(node ValExpr) bool

IsColName returns true if the ValExpr is a *ColName.

func IsSimpleTuple 

func IsSimpleTuple(node ValExpr) bool

IsSimpleTuple returns true if the ValExpr is a ValTuple that contains simple values.

func IsValue 

func IsValue(node ValExpr) bool

IsVal returns true if the ValExpr is a string, number or value arg. NULL is not considered to be a value.

func SetAllowComments 

func SetAllowComments(yylex interface{}, allow bool)

func SetParseTree 

func SetParseTree(yylex interface{}, stmt Statement)

func String 

func String(node SQLNode) string

String returns a string representation of an SQLNode.

func StringIn 

func StringIn(str string, values ...string) bool

StringIn is a convenience function that returns true if str matches any of the values.

Types

type Admin 

type Admin struct {
	Name   []byte
	Values ValExprs
}

func (*Admin) Format 

func (node *Admin) Format(buf *TrackedBuffer)

func (*Admin) IStatement 

func (*Admin) IStatement()

type AliasedTableExpr 

type AliasedTableExpr struct {
	Expr  SimpleTableExpr
	As    []byte
	Hints *IndexHints
}

AliasedTableExpr represents a table expression coupled with an optional alias or index hint.

func (*AliasedTableExpr) Format 

func (node *AliasedTableExpr) Format(buf *TrackedBuffer)

func (*AliasedTableExpr) ITableExpr 

func (*AliasedTableExpr) ITableExpr()

type AndExpr 

type AndExpr struct {
	Left, Right BoolExpr
}

AndExpr represents an AND expression.

func (*AndExpr) Format 

func (node *AndExpr) Format(buf *TrackedBuffer)

func (*AndExpr) IBoolExpr 

func (*AndExpr) IBoolExpr()

func (*AndExpr) IExpr 

func (*AndExpr) IExpr()

type Begin 

type Begin struct {
}

func (*Begin) Format 

func (node *Begin) Format(buf *TrackedBuffer)

func (*Begin) IStatement 

func (*Begin) IStatement()

type BinaryExpr 

type BinaryExpr struct {
	Operator    byte
	Left, Right Expr
}

BinaryExpr represents a binary value expression.

func (*BinaryExpr) Format 

func (node *BinaryExpr) Format(buf *TrackedBuffer)

func (*BinaryExpr) IExpr 

func (*BinaryExpr) IExpr()

func (*BinaryExpr) IValExpr 

func (*BinaryExpr) IValExpr()

type BindLocation 

type BindLocation struct {
	Offset, Length int
}

type BoolExpr 

type BoolExpr interface {
	IBoolExpr()
	Expr
}

BoolExpr represents a boolean expression.

type CaseExpr 

type CaseExpr struct {
	Expr  ValExpr
	Whens []*When
	Else  ValExpr
}

CaseExpr represents a CASE expression.

func (*CaseExpr) Format 

func (node *CaseExpr) Format(buf *TrackedBuffer)

func (*CaseExpr) IExpr 

func (*CaseExpr) IExpr()

func (*CaseExpr) IValExpr 

func (*CaseExpr) IValExpr()

type ColName 

type ColName struct {
	Name, Qualifier []byte
}

ColName represents a column name.

func (*ColName) Format 

func (node *ColName) Format(buf *TrackedBuffer)

func (*ColName) IExpr 

func (*ColName) IExpr()

func (*ColName) IValExpr 

func (*ColName) IValExpr()

type Columns 

type Columns []SelectExpr

Columns represents an insert column list. The syntax for Columns is a subset of SelectExprs. So, it's castable to a SelectExprs and can be analyzed as such.

func (Columns) Format 

func (node Columns) Format(buf *TrackedBuffer)

type Comments 

type Comments [][]byte

Comments represents a list of comments.

func (Comments) Format 

func (node Comments) Format(buf *TrackedBuffer)

type Commit 

type Commit struct {
}

func (*Commit) Format 

func (node *Commit) Format(buf *TrackedBuffer)

func (*Commit) IStatement 

func (*Commit) IStatement()

type ComparisonExpr 

type ComparisonExpr struct {
	Operator    string
	Left, Right ValExpr
}

ComparisonExpr represents a two-value comparison expression.

func (*ComparisonExpr) Format 

func (node *ComparisonExpr) Format(buf *TrackedBuffer)

func (*ComparisonExpr) IBoolExpr 

func (*ComparisonExpr) IBoolExpr()

func (*ComparisonExpr) IExpr 

func (*ComparisonExpr) IExpr()

type DDL 

type DDL struct {
	Action  string
	Table   []byte
	NewName []byte
}

DDL represents a CREATE, ALTER, DROP or RENAME statement. Table is set for AST_ALTER, AST_DROP, AST_RENAME. NewName is set for AST_ALTER, AST_CREATE, AST_RENAME.

func (*DDL) Format 

func (node *DDL) Format(buf *TrackedBuffer)

func (*DDL) IStatement 

func (*DDL) IStatement()

type Delete 

type Delete struct {
	Comments Comments
	Table    *TableName
	Where    *Where
	OrderBy  OrderBy
	Limit    *Limit
}

Delete represents a DELETE statement.

func (*Delete) Format 

func (node *Delete) Format(buf *TrackedBuffer)

func (*Delete) IStatement 

func (*Delete) IStatement()

type EncoderFunc 

type EncoderFunc func(value interface{}) ([]byte, error)

type ExistsExpr 

type ExistsExpr struct {
	Subquery *Subquery
}

ExistsExpr represents an EXISTS expression.

func (*ExistsExpr) Format 

func (node *ExistsExpr) Format(buf *TrackedBuffer)

func (*ExistsExpr) IBoolExpr 

func (*ExistsExpr) IBoolExpr()

func (*ExistsExpr) IExpr 

func (*ExistsExpr) IExpr()

type Expr 

type Expr interface {
	IExpr()
	SQLNode
}

Expr represents an expression.

type FuncExpr 

type FuncExpr struct {
	Name     []byte
	Distinct bool
	Exprs    SelectExprs
}

FuncExpr represents a function call.

func (*FuncExpr) Format 

func (node *FuncExpr) Format(buf *TrackedBuffer)

func (*FuncExpr) IExpr 

func (*FuncExpr) IExpr()

func (*FuncExpr) IValExpr 

func (*FuncExpr) IValExpr()

type GroupBy 

type GroupBy []ValExpr

GroupBy represents a GROUP BY clause.

func (GroupBy) Format 

func (node GroupBy) Format(buf *TrackedBuffer)

type IndexHints 

type IndexHints struct {
	Type    string
	Indexes [][]byte
}

IndexHints represents a list of index hints.

func (*IndexHints) Format 

func (node *IndexHints) Format(buf *TrackedBuffer)

type Insert 

type Insert struct {
	Comments Comments
	Table    *TableName
	Columns  Columns
	Rows     InsertRows
	OnDup    OnDup
}

Insert represents an INSERT statement.

func (*Insert) Format 

func (node *Insert) Format(buf *TrackedBuffer)

func (*Insert) IStatement 

func (*Insert) IStatement()

type InsertRows 

type InsertRows interface {
	IInsertRows()
	SQLNode
}

InsertRows represents the rows for an INSERT statement.

type JoinTableExpr 

type JoinTableExpr struct {
	LeftExpr  TableExpr
	Join      string
	RightExpr TableExpr
	On        BoolExpr
}

JoinTableExpr represents a TableExpr that's a JOIN operation.

func (*JoinTableExpr) Format 

func (node *JoinTableExpr) Format(buf *TrackedBuffer)

func (*JoinTableExpr) ITableExpr 

func (*JoinTableExpr) ITableExpr()

type Limit 

type Limit struct {
	Offset, Rowcount ValExpr
}

Limit represents a LIMIT clause.

func (*Limit) Format 

func (node *Limit) Format(buf *TrackedBuffer)

type NonStarExpr 

type NonStarExpr struct {
	Expr Expr
	As   []byte
}

NonStarExpr defines a non-'*' select expr.

func (*NonStarExpr) Format 

func (node *NonStarExpr) Format(buf *TrackedBuffer)

func (*NonStarExpr) ISelectExpr 

func (*NonStarExpr) ISelectExpr()

type NotExpr 

type NotExpr struct {
	Expr BoolExpr
}

NotExpr represents a NOT expression.

func (*NotExpr) Format 

func (node *NotExpr) Format(buf *TrackedBuffer)

func (*NotExpr) IBoolExpr 

func (*NotExpr) IBoolExpr()

func (*NotExpr) IExpr 

func (*NotExpr) IExpr()

type NullCheck 

type NullCheck struct {
	Operator string
	Expr     ValExpr
}

NullCheck represents an IS NULL or an IS NOT NULL expression.

func (*NullCheck) Format 

func (node *NullCheck) Format(buf *TrackedBuffer)

func (*NullCheck) IBoolExpr 

func (*NullCheck) IBoolExpr()

func (*NullCheck) IExpr 

func (*NullCheck) IExpr()

type NullVal 

type NullVal struct{}

NullVal represents a NULL value.

func (*NullVal) Format 

func (node *NullVal) Format(buf *TrackedBuffer)

func (*NullVal) IExpr 

func (*NullVal) IExpr()

func (*NullVal) IValExpr 

func (*NullVal) IValExpr()

type NumVal 

type NumVal []byte

NumVal represents a number.

func (NumVal) Format 

func (node NumVal) Format(buf *TrackedBuffer)

func (NumVal) IExpr 

func (NumVal) IExpr()

func (NumVal) IValExpr 

func (NumVal) IValExpr()

type OnDup 

type OnDup UpdateExprs

OnDup represents an ON DUPLICATE KEY clause.

func (OnDup) Format 

func (node OnDup) Format(buf *TrackedBuffer)

type OrExpr 

type OrExpr struct {
	Left, Right BoolExpr
}

OrExpr represents an OR expression.

func (*OrExpr) Format 

func (node *OrExpr) Format(buf *TrackedBuffer)

func (*OrExpr) IBoolExpr 

func (*OrExpr) IBoolExpr()

func (*OrExpr) IExpr 

func (*OrExpr) IExpr()

type Order 

type Order struct {
	Expr      ValExpr
	Direction string
}

Order represents an ordering expression.

func (*Order) Format 

func (node *Order) Format(buf *TrackedBuffer)

type OrderBy 

type OrderBy []*Order

OrderBy represents an ORDER By clause.

func (OrderBy) Format 

func (node OrderBy) Format(buf *TrackedBuffer)

type ParenBoolExpr 

type ParenBoolExpr struct {
	Expr BoolExpr
}

ParenBoolExpr represents a parenthesized boolean expression.

func (*ParenBoolExpr) Format 

func (node *ParenBoolExpr) Format(buf *TrackedBuffer)

func (*ParenBoolExpr) IBoolExpr 

func (*ParenBoolExpr) IBoolExpr()

func (*ParenBoolExpr) IExpr 

func (*ParenBoolExpr) IExpr()

type ParenTableExpr 

type ParenTableExpr struct {
	Expr TableExpr
}

ParenTableExpr represents a parenthesized TableExpr.

func (*ParenTableExpr) Format 

func (node *ParenTableExpr) Format(buf *TrackedBuffer)

func (*ParenTableExpr) ITableExpr 

func (*ParenTableExpr) ITableExpr()

type ParsedQuery 

type ParsedQuery struct {
	Query         string
	BindLocations []BindLocation
}

func (*ParsedQuery) GenerateQuery 

func (pq *ParsedQuery) GenerateQuery(bindVariables map[string]interface{}, listVariables []sqltypes.Value) ([]byte, error)

func (*ParsedQuery) MarshalJSON 

func (pq *ParsedQuery) MarshalJSON() ([]byte, error)

type ParserError 

type ParserError struct {
	Message string
}

ParserError: To be deprecated. TODO(sougou): deprecate.

func NewParserError 

func NewParserError(format string, args ...interface{}) ParserError

func (ParserError) Error 

func (err ParserError) Error() string

type RangeCond 

type RangeCond struct {
	Operator string
	Left     ValExpr
	From, To ValExpr
}

RangeCond represents a BETWEEN or a NOT BETWEEN expression.

func (*RangeCond) Format 

func (node *RangeCond) Format(buf *TrackedBuffer)

func (*RangeCond) IBoolExpr 

func (*RangeCond) IBoolExpr()

func (*RangeCond) IExpr 

func (*RangeCond) IExpr()

type Replace 

type Replace struct {
	Comments Comments
	Table    *TableName
	Columns  Columns
	Rows     InsertRows
}

Replace represents an REPLACE statement.

func (*Replace) Format 

func (node *Replace) Format(buf *TrackedBuffer)

func (*Replace) IStatement 

func (*Replace) IStatement()

type Rollback 

type Rollback struct {
}

func (*Rollback) Format 

func (node *Rollback) Format(buf *TrackedBuffer)

func (*Rollback) IStatement 

func (*Rollback) IStatement()

type SQLNode 

type SQLNode interface {
	Format(buf *TrackedBuffer)
}

SQLNode defines the interface for all nodes generated by the parser.

type Select 

type Select struct {
	Comments    Comments
	Distinct    string
	SelectExprs SelectExprs
	From        TableExprs
	Where       *Where
	GroupBy     GroupBy
	Having      *Where
	OrderBy     OrderBy
	Limit       *Limit
	Lock        string
}

Select represents a SELECT statement.

func (*Select) Format 

func (node *Select) Format(buf *TrackedBuffer)

func (*Select) IInsertRows 

func (*Select) IInsertRows()

func (*Select) ISelectStatement 

func (*Select) ISelectStatement()

func (*Select) IStatement 

func (*Select) IStatement()

type SelectExpr 

type SelectExpr interface {
	ISelectExpr()
	SQLNode
}

SelectExpr represents a SELECT expression.

type SelectExprs 

type SelectExprs []SelectExpr

SelectExprs represents SELECT expressions.

func (SelectExprs) Format 

func (node SelectExprs) Format(buf *TrackedBuffer)

type SelectStatement 

type SelectStatement interface {
	ISelectStatement()
	IStatement()
	IInsertRows()
	SQLNode
}

SelectStatement any SELECT statement.

type Set 

type Set struct {
	Comments Comments
	Exprs    UpdateExprs
}

Set represents a SET statement.

func (*Set) Format 

func (node *Set) Format(buf *TrackedBuffer)

func (*Set) IStatement 

func (*Set) IStatement()

type Show 

type Show struct {
	Section     string
	Key         string
	From        ValExpr
	LikeOrWhere Expr
}

func (*Show) Format 

func (node *Show) Format(buf *TrackedBuffer)

func (*Show) IStatement 

func (*Show) IStatement()

type SimpleSelect 

type SimpleSelect struct {
	Comments    Comments
	Distinct    string
	SelectExprs SelectExprs
}

func (*SimpleSelect) Format 

func (node *SimpleSelect) Format(buf *TrackedBuffer)

func (*SimpleSelect) IInsertRows 

func (*SimpleSelect) IInsertRows()

func (*SimpleSelect) ISelectStatement 

func (*SimpleSelect) ISelectStatement()

func (*SimpleSelect) IStatement 

func (*SimpleSelect) IStatement()

type SimpleTableExpr 

type SimpleTableExpr interface {
	ISimpleTableExpr()
	SQLNode
}

SimpleTableExpr represents a simple table expression.

type StarExpr 

type StarExpr struct {
	TableName []byte
}

StarExpr defines a '*' or 'table.*' expression.

func (*StarExpr) Format 

func (node *StarExpr) Format(buf *TrackedBuffer)

func (*StarExpr) ISelectExpr 

func (*StarExpr) ISelectExpr()

type Statement 

type Statement interface {
	IStatement()
	SQLNode
}

Statement represents a statement.

func Parse 

func Parse(sql string) (Statement, error)

Parse parses the sql and returns a Statement, which is the AST representation of the query.

type StrVal 

type StrVal []byte

StrVal represents a string value.

func (StrVal) Format 

func (node StrVal) Format(buf *TrackedBuffer)

func (StrVal) IExpr 

func (StrVal) IExpr()

func (StrVal) IValExpr 

func (StrVal) IValExpr()

type Subquery 

type Subquery struct {
	Select SelectStatement
}

Subquery represents a subquery.

func (*Subquery) Format 

func (node *Subquery) Format(buf *TrackedBuffer)

func (*Subquery) IExpr 

func (*Subquery) IExpr()

func (*Subquery) ISimpleTableExpr 

func (*Subquery) ISimpleTableExpr()

func (*Subquery) ITuple 

func (*Subquery) ITuple()

func (*Subquery) IValExpr 

func (*Subquery) IValExpr()

type TableExpr 

type TableExpr interface {
	ITableExpr()
	SQLNode
}

TableExpr represents a table expression.

type TableExprs 

type TableExprs []TableExpr

TableExprs represents a list of table expressions.

func (TableExprs) Format 

func (node TableExprs) Format(buf *TrackedBuffer)

type TableName 

type TableName struct {
	Name, Qualifier []byte
}

TableName represents a table name.

func (*TableName) Format 

func (node *TableName) Format(buf *TrackedBuffer)

func (*TableName) ISimpleTableExpr 

func (*TableName) ISimpleTableExpr()

type Tokenizer 

type Tokenizer struct {
	InStream      *strings.Reader
	AllowComments bool
	ForceEOF      bool

	Position int

	LastError string

	ParseTree Statement
	// contains filtered or unexported fields
}

Tokenizer is the struct used to generate SQL tokens for the parser.

func NewStringTokenizer 

func NewStringTokenizer(sql string) *Tokenizer

NewStringTokenizer creates a new Tokenizer for the sql string.

func (*Tokenizer) ConsumeNext 

func (tkn *Tokenizer) ConsumeNext(buffer *bytes.Buffer)

func (*Tokenizer) Error 

func (tkn *Tokenizer) Error(err string)

Error is called by go yacc if there's a parsing error.

func (*Tokenizer) Lex 

func (tkn *Tokenizer) Lex(lval *yySymType) int

Lex returns the next token form the Tokenizer. This function is used by go yacc.

func (*Tokenizer) Scan 

func (tkn *Tokenizer) Scan() (int, []byte)

Scan scans the tokenizer for the next token and returns the token type and an optional value.

type TrackedBuffer 

type TrackedBuffer struct {
	*bytes.Buffer
	// contains filtered or unexported fields
}

TrackedBuffer is used to rebuild a query from the ast. bindLocations keeps track of locations in the buffer that use bind variables for efficient future substitutions. nodeFormatter is the formatting function the buffer will use to format a node. By default(nil), it's FormatNode. But you can supply a different formatting function if you want to generate a query that's different from the default.

func NewTrackedBuffer 

func NewTrackedBuffer(nodeFormatter func(buf *TrackedBuffer, node SQLNode)) *TrackedBuffer

func (*TrackedBuffer) Fprintf 

func (buf *TrackedBuffer) Fprintf(format string, values ...interface{})

Fprintf mimics fmt.Fprintf, but limited to Node(%v), Node.Value(%s) and string(%s). It also allows a %a for a value argument, in which case it adds tracking info for future substitutions.

func (*TrackedBuffer) ParsedQuery 

func (buf *TrackedBuffer) ParsedQuery() *ParsedQuery

func (*TrackedBuffer) WriteArg 

func (buf *TrackedBuffer) WriteArg(arg string)

WriteArg writes a value argument into the buffer. arg should not contain the ':' prefix. It also adds tracking info for future substitutions.

type Tuple 

type Tuple interface {
	ITuple()
	ValExpr
}

Tuple represents a tuple. It can be ValTuple, Subquery.

type UnaryExpr 

type UnaryExpr struct {
	Operator byte
	Expr     Expr
}

UnaryExpr represents a unary value expression.

func (*UnaryExpr) Format 

func (node *UnaryExpr) Format(buf *TrackedBuffer)

func (*UnaryExpr) IExpr 

func (*UnaryExpr) IExpr()

func (*UnaryExpr) IValExpr 

func (*UnaryExpr) IValExpr()

type Union 

type Union struct {
	Type        string
	Left, Right SelectStatement
}

Union represents a UNION statement.

func (*Union) Format 

func (node *Union) Format(buf *TrackedBuffer)

func (*Union) IInsertRows 

func (*Union) IInsertRows()

func (*Union) ISelectStatement 

func (*Union) ISelectStatement()

func (*Union) IStatement 

func (*Union) IStatement()

type Update 

type Update struct {
	Comments Comments
	Table    *TableName
	Exprs    UpdateExprs
	Where    *Where
	OrderBy  OrderBy
	Limit    *Limit
}

Update represents an UPDATE statement.

func (*Update) Format 

func (node *Update) Format(buf *TrackedBuffer)

func (*Update) IStatement 

func (*Update) IStatement()

type UpdateExpr 

type UpdateExpr struct {
	Name *ColName
	Expr ValExpr
}

UpdateExpr represents an update expression.

func (*UpdateExpr) Format 

func (node *UpdateExpr) Format(buf *TrackedBuffer)

type UpdateExprs 

type UpdateExprs []*UpdateExpr

UpdateExprs represents a list of update expressions.

func (UpdateExprs) Format 

func (node UpdateExprs) Format(buf *TrackedBuffer)

type ValArg 

type ValArg []byte

ValArg represents a named bind var argument.

func (ValArg) Format 

func (node ValArg) Format(buf *TrackedBuffer)

func (ValArg) IExpr 

func (ValArg) IExpr()

func (ValArg) IValExpr 

func (ValArg) IValExpr()

type ValExpr 

type ValExpr interface {
	IValExpr()
	Expr
}

ValExpr represents a value expression.

type ValExprs 

type ValExprs []ValExpr

ValExprs represents a list of value expressions. It's not a valid expression because it's not parenthesized.

func (ValExprs) Format 

func (node ValExprs) Format(buf *TrackedBuffer)

type ValTuple 

type ValTuple ValExprs

ValTuple represents a tuple of actual values.

func (ValTuple) Format 

func (node ValTuple) Format(buf *TrackedBuffer)

func (ValTuple) IExpr 

func (ValTuple) IExpr()

func (ValTuple) ITuple 

func (ValTuple) ITuple()

func (ValTuple) IValExpr 

func (ValTuple) IValExpr()

type Values 

type Values []Tuple

Values represents a VALUES clause.

func (Values) Format 

func (node Values) Format(buf *TrackedBuffer)

func (Values) IInsertRows 

func (Values) IInsertRows()

type When 

type When struct {
	Cond BoolExpr
	Val  ValExpr
}

When represents a WHEN sub-expression.

func (*When) Format 

func (node *When) Format(buf *TrackedBuffer)

type Where 

type Where struct {
	Type string
	Expr BoolExpr
}

Where represents a WHERE or HAVING clause.

func NewWhere 

func NewWhere(typ string, expr BoolExpr) *Where

NewWhere creates a WHERE or HAVING clause out of a BoolExpr. If the expression is nil, it returns nil.

func (*Where) Format 

func (node *Where) Format(buf *TrackedBuffer)

Source Files

View all Source files

Jump to

Keyboard shortcuts

? : This menu
/ : Search site
f or F : Jump to
y or Y : Canonical URL
go.dev uses cookies from Google to deliver and enhance the quality of its services and to analyze traffic. Learn more.