parser

package
v0.1.8 Latest Latest
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 Go to latest Published: Jun 13, 2017 License: MIT Imports: 11 Imported by: 2

Documentation

Index

Examples

Constants

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const (
	EOF = -(iota + 1)
	UNCATEGORIZED
)
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const (
	TOKEN_FROM   = IDENTIFIER
	TOKEN_TO     = SUBSTITUTION_OP
	KEYWORD_FROM = SELECT
	KEYWORD_TO   = VAR
)
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const (
	SUBSTITUTION_OPERATOR = ":="

	VARIABLE_SIGN = '@'
)
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const ADD = 57368
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const AFTER = 57374
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const ALL = 57397
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const ALTER = 57370
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const AND = 57401
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const ANY = 57398
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const AS = 57364
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const ASC = 57383
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const BEFORE = 57375
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const BETWEEN = 57404
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const BOOLEAN = 57350
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const BREAK = 57431
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const BY = 57382
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const CASE = 57410
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const CLOSE = 57424
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const COMMIT = 57428
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const COMPARISON_OP = 57435
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const CONTINUE = 57430
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const CREATE = 57367
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const CROSS = 57392
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const CURSOR = 57420
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const DATETIME = 57352
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const DATETIME_FORMAT = "2006-01-02 15:04:05.999999999"
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const DECLARE = 57419
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const DEFAULT = 57376
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const DELETE = 57359
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const DESC = 57384
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const DISPOSE = 57425
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const DISTINCT = 57408
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const DO = 57417
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const DROP = 57369
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const DUAL = 57365
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const ELSE = 57416
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const ELSEIF = 57412
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const END = 57418
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const EXISTS = 57399
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const EXIT = 57432
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const FETCH = 57422
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const FIRST = 57372
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const FLAG = 57354
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const FLOAT = 57349
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const FOR = 57421
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const FROM = 57356
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const FULL = 57391
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const GROUP = 57380
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const GROUP_CONCAT = 57426
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const HAVING = 57381
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const IDENTIFIER = 57346
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const IF = 57411
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const IN = 57400
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const INNER = 57387
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const INSERT = 57361
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const INTEGER = 57348
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const INTO = 57362
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const IS = 57406
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const JOIN = 57386
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const LAST = 57373
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const LEFT = 57389
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const LIKE = 57405
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const LIMIT = 57385
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const NATURAL = 57395
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const NOT = 57403
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const NULL = 57407
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const ON = 57393
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const OPEN = 57423
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const OR = 57402
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const ORDER = 57379
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const OUTER = 57388
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const PRINT = 57433
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const RENAME = 57377
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const RIGHT = 57390
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const ROLLBACK = 57429
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const SELECT = 57355
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const SEPARATOR = 57427
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const SET = 57358
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const STDIN = 57366
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const STRING = 57347
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const STRING_OP = 57436
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const SUBSTITUTION_OP = 57437
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const TABLE = 57371
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const TERNARY = 57351
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const THEN = 57415
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const TO = 57378
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const TOKEN_UNDEFINED = 0
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const UNION = 57396
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const UPDATE = 57357
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const USING = 57394
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const VALUES = 57363
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const VAR = 57434
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const VARIABLE = 57353
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const WHEN = 57414
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const WHERE = 57360
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const WHILE = 57413
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const WITH = 57409

Variables

This section is empty.

Functions

func Float64ToStr 

func Float64ToStr(f float64) string

func FormatTableName added in v0.1.6 

func FormatTableName(s string) string

func Int64ToStr 

func Int64ToStr(i int64) string

func IsNull 

func IsNull(v Primary) bool

func IsPrimary 

func IsPrimary(e Expression) bool

func SetDebugLevel 

func SetDebugLevel(level int, verbose bool)
Example 
SetDebugLevel(0, false)
_, err := Parse("select select")
fmt.Println(err)

SetDebugLevel(0, true)
_, err = Parse("select select")
fmt.Println(err)

Output:

syntax error
syntax error: unexpected SELECT

func StrToTime 

func StrToTime(s string) (time.Time, error)

func TokenLiteral 

func TokenLiteral(token int) string

Types

type AddColumns added in v0.1.6 

type AddColumns struct {
	AlterTable string
	Table      Identifier
	Add        string
	Columns    []Expression
	Position   Expression
}

func (AddColumns) String added in v0.1.6 

func (e AddColumns) String() string

type All 

type All struct {
	All      string
	LHS      Expression
	Operator Token
	Query    Subquery
}

func (All) String 

func (a All) String() string

type AllColumns 

type AllColumns struct {
}

func (AllColumns) String 

func (ac AllColumns) String() string

type Any 

type Any struct {
	Any      string
	LHS      Expression
	Operator Token
	Query    Subquery
}

func (Any) String 

func (a Any) String() string

type Arithmetic 

type Arithmetic struct {
	LHS      Expression
	Operator int
	RHS      Expression
}

func (Arithmetic) String 

func (a Arithmetic) String() string

type Between 

type Between struct {
	Between  string
	And      string
	LHS      Expression
	Low      Expression
	High     Expression
	Negation Token
}

func (*Between) IsNegated 

func (b *Between) IsNegated() bool

func (Between) String 

func (b Between) String() string

type Boolean 

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

func NewBoolean 

func NewBoolean(b bool) Boolean

func (Boolean) Bool 

func (b Boolean) Bool() bool

func (Boolean) String 

func (b Boolean) String() string

func (Boolean) Ternary 

func (b Boolean) Ternary() ternary.Value

type Case 

type Case struct {
	Case  string
	End   string
	Value Expression
	When  []Expression
	Else  Expression
}

func (Case) String 

func (c Case) String() string

type CaseElse 

type CaseElse struct {
	Else   string
	Result Expression
}

func (CaseElse) String 

func (ce CaseElse) String() string

type CaseWhen 

type CaseWhen struct {
	When      string
	Then      string
	Condition Expression
	Result    Expression
}

func (CaseWhen) String 

func (cw CaseWhen) String() string

type CloseCursor added in v0.1.8 

type CloseCursor struct {
	Cursor Identifier
}

type ColumnDefault added in v0.1.6 

type ColumnDefault struct {
	Column  Identifier
	Default string
	Value   Expression
}

func (ColumnDefault) String added in v0.1.6 

func (e ColumnDefault) String() string

type ColumnPosition added in v0.1.6 

type ColumnPosition struct {
	Position Token
	Column   Expression
}

func (ColumnPosition) String added in v0.1.6 

func (e ColumnPosition) String() string

type Comparison 

type Comparison struct {
	LHS      Expression
	Operator Token
	RHS      Expression
}

func (Comparison) String 

func (c Comparison) String() string

type Concat 

type Concat struct {
	Items []Expression
}

func (Concat) String 

func (c Concat) String() string

type CreateTable added in v0.1.6 

type CreateTable struct {
	CreateTable string
	Table       Identifier
	Fields      []Expression
}

func (CreateTable) String added in v0.1.6 

func (e CreateTable) String() string

type CursorDeclaration added in v0.1.8 

type CursorDeclaration struct {
	Cursor Identifier
	Query  SelectQuery
}

type Datetime 

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

func NewDatetime 

func NewDatetime(t time.Time) Datetime

func NewDatetimeFromString 

func NewDatetimeFromString(s string) Datetime

func (Datetime) Bool 

func (dt Datetime) Bool() bool

func (Datetime) Format 

func (dt Datetime) Format() string

func (*Datetime) SetFormat 

func (dt *Datetime) SetFormat(format string)

func (Datetime) String 

func (dt Datetime) String() string

func (Datetime) Ternary 

func (dt Datetime) Ternary() ternary.Value

func (Datetime) Value 

func (dt Datetime) Value() time.Time

type DeleteQuery added in v0.1.6 

type DeleteQuery struct {
	Delete      string
	Tables      []Expression
	FromClause  Expression
	WhereClause Expression
}

func (DeleteQuery) String added in v0.1.6 

func (dq DeleteQuery) String() string

type DisposeCursor added in v0.1.8 

type DisposeCursor struct {
	Cursor Identifier
}

type DropColumns added in v0.1.6 

type DropColumns struct {
	AlterTable string
	Table      Identifier
	Drop       string
	Columns    []Expression
}

func (DropColumns) String added in v0.1.6 

func (e DropColumns) String() string

type Dual 

type Dual struct {
	Dual string
}

func (Dual) String 

func (d Dual) String() string

type Else added in v0.1.8 

type Else struct {
	Statements []Statement
}

type ElseIf added in v0.1.8 

type ElseIf struct {
	Condition  Expression
	Statements []Statement
}

type Exists 

type Exists struct {
	Exists string
	Query  Subquery
}

func (Exists) String 

func (e Exists) String() string

type Expression 

type Expression interface {
	String() string
}

type FetchCursor added in v0.1.8 

type FetchCursor struct {
	Cursor    Identifier
	Variables []Variable
}

type Field 

type Field struct {
	Object Expression
	As     Token
	Alias  Expression
}

func (*Field) Name 

func (f *Field) Name() string

func (Field) String 

func (f Field) String() string

type FieldReference added in v0.1.8 

type FieldReference struct {
	View   Expression
	Column Identifier
}

func (FieldReference) String added in v0.1.8 

func (e FieldReference) String() string

type Float 

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

func NewFloat 

func NewFloat(f float64) Float

func NewFloatFromString 

func NewFloatFromString(s string) Float

func (Float) Bool 

func (f Float) Bool() bool

func (Float) String 

func (f Float) String() string

func (Float) Ternary 

func (f Float) Ternary() ternary.Value

func (Float) Value 

func (f Float) Value() float64

type FlowControl added in v0.1.8 

type FlowControl struct {
	Token int
}

type FromClause 

type FromClause struct {
	From   string
	Tables []Expression
}

func (FromClause) String 

func (f FromClause) String() string

type Function 

type Function struct {
	Name   string
	Option Option
}

func (Function) String 

func (f Function) String() string

type GroupByClause 

type GroupByClause struct {
	GroupBy string
	Items   []Expression
}

func (GroupByClause) String 

func (gb GroupByClause) String() string

type GroupConcat 

type GroupConcat struct {
	GroupConcat  string
	Option       Option
	OrderBy      Expression
	SeparatorLit string
	Separator    string
}

func (GroupConcat) String 

func (gc GroupConcat) String() string

type HavingClause 

type HavingClause struct {
	Having string
	Filter Expression
}

func (HavingClause) String 

func (h HavingClause) String() string

type Identifier 

type Identifier struct {
	Literal string
	Quoted  bool
}

func (Identifier) String 

func (i Identifier) String() string

type If added in v0.1.8 

type If struct {
	Condition  Expression
	Statements []Statement
	ElseIf     []ProcExpr
	Else       ProcExpr
}

type In 

type In struct {
	In       string
	LHS      Expression
	List     []Expression
	Query    Subquery
	Negation Token
}

func (*In) IsNegated 

func (i *In) IsNegated() bool

func (In) String 

func (i In) String() string

type InsertQuery added in v0.1.6 

type InsertQuery struct {
	Insert     string
	Into       string
	Table      Identifier
	Fields     []Expression
	Values     string
	ValuesList []Expression
	Query      Expression
}

func (InsertQuery) String added in v0.1.6 

func (iq InsertQuery) String() string

type InsertValues added in v0.1.6 

type InsertValues struct {
	Values []Expression
}

func (InsertValues) String added in v0.1.6 

func (iv InsertValues) String() string

type Integer 

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

func NewInteger 

func NewInteger(i int64) Integer

func NewIntegerFromString 

func NewIntegerFromString(s string) Integer

func (Integer) Bool 

func (i Integer) Bool() bool

func (Integer) String 

func (i Integer) String() string

func (Integer) Ternary 

func (i Integer) Ternary() ternary.Value

func (Integer) Value 

func (i Integer) Value() int64

type Is 

type Is struct {
	Is       string
	LHS      Expression
	RHS      Expression
	Negation Token
}

func (*Is) IsNegated 

func (i *Is) IsNegated() bool

func (Is) String 

func (i Is) String() string

type Join 

type Join struct {
	Join      string
	Table     Table
	JoinTable Table
	Natural   Token
	JoinType  Token
	Direction Token
	Condition Expression
}

func (Join) String 

func (j Join) String() string

type JoinCondition 

type JoinCondition struct {
	Literal string
	On      Expression
	Using   []Expression
}

func (JoinCondition) String 

func (jc JoinCondition) String() string

type Lexer 

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

func (*Lexer) Error 

func (l *Lexer) Error(e string)

func (*Lexer) Lex 

func (l *Lexer) Lex(lval *yySymType) int

type Like 

type Like struct {
	Like     string
	LHS      Expression
	Pattern  Expression
	Negation Token
}

func (*Like) IsNegated 

func (l *Like) IsNegated() bool

func (Like) String 

func (l Like) String() string

type LimitClause 

type LimitClause struct {
	Limit  string
	Number int64
}

func (LimitClause) String 

func (l LimitClause) String() string

type Logic 

type Logic struct {
	LHS      Expression
	Operator Token
	RHS      Expression
}

func (Logic) String 

func (l Logic) String() string

type Null 

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

func NewNull 

func NewNull() Null

func NewNullFromString 

func NewNullFromString(s string) Null

func (Null) Bool 

func (n Null) Bool() bool

func (Null) String 

func (n Null) String() string

func (Null) Ternary 

func (n Null) Ternary() ternary.Value

type OpenCursor added in v0.1.8 

type OpenCursor struct {
	Cursor Identifier
}

type Option 

type Option struct {
	Distinct Token
	Args     []Expression
}

func (Option) IsDistinct 

func (o Option) IsDistinct() bool

func (Option) String 

func (o Option) String() string

type OrderByClause 

type OrderByClause struct {
	OrderBy string
	Items   []Expression
}

func (OrderByClause) String 

func (ob OrderByClause) String() string

type OrderItem 

type OrderItem struct {
	Item      Expression
	Direction Token
}

func (OrderItem) String 

func (oi OrderItem) String() string

type Parentheses 

type Parentheses struct {
	Expr Expression
}

func (Parentheses) String 

func (p Parentheses) String() string

type Primary 

type Primary interface {
	String() string
	Bool() bool
	Ternary() ternary.Value
}

func Float64ToPrimary 

func Float64ToPrimary(f float64) Primary

func PrimaryToBoolean 

func PrimaryToBoolean(p Primary) Primary

func PrimaryToDatetime 

func PrimaryToDatetime(p Primary) Primary

func PrimaryToFloat 

func PrimaryToFloat(p Primary) Primary

func PrimaryToInteger 

func PrimaryToInteger(p Primary) Primary

func PrimaryToString 

func PrimaryToString(p Primary) Primary

type Print added in v0.1.6 

type Print struct {
	Value Expression
}

type ProcExpr added in v0.1.8 

type ProcExpr interface{}

type RenameColumn added in v0.1.6 

type RenameColumn struct {
	AlterTable string
	Table      Identifier
	Rename     string
	Old        FieldReference
	To         string
	New        Identifier
}

func (RenameColumn) String added in v0.1.6 

func (e RenameColumn) String() string

type Scanner 

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

func (*Scanner) Init 

func (s *Scanner) Init(src string) *Scanner

func (*Scanner) Scan 

func (s *Scanner) Scan() (int, string, bool, error)

type SelectClause 

type SelectClause struct {
	Select   string
	Distinct Token
	Fields   []Expression
}

func (SelectClause) IsDistinct 

func (sc SelectClause) IsDistinct() bool

func (SelectClause) String 

func (sc SelectClause) String() string

type SelectQuery 

type SelectQuery struct {
	SelectClause  Expression
	FromClause    Expression
	WhereClause   Expression
	GroupByClause Expression
	HavingClause  Expression
	OrderByClause Expression
	LimitClause   Expression
}

func (SelectQuery) String 

func (sq SelectQuery) String() string

type SetFlag added in v0.1.6 

type SetFlag struct {
	Name  string
	Value Primary
}

type Statement 

type Statement interface{}

func Parse 

func Parse(s string) ([]Statement, error)

type Stdin added in v0.1.5 

type Stdin struct {
	Stdin string
}

func (Stdin) String added in v0.1.5 

func (si Stdin) String() string

type String 

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

func NewString 

func NewString(s string) String

func (String) Bool 

func (s String) Bool() bool

func (String) String 

func (s String) String() string

func (String) Ternary 

func (s String) Ternary() ternary.Value

func (String) Value 

func (s String) Value() string

type Subquery 

type Subquery struct {
	Query SelectQuery
}

func (Subquery) String 

func (sq Subquery) String() string

type Table 

type Table struct {
	Object Expression
	As     Token
	Alias  Expression
}

func (*Table) Name 

func (t *Table) Name() string

func (Table) String 

func (t Table) String() string

type Ternary 

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

func NewTernary 

func NewTernary(t ternary.Value) Ternary

func NewTernaryFromString 

func NewTernaryFromString(s string) Ternary

func (Ternary) Bool 

func (t Ternary) Bool() bool

func (Ternary) String 

func (t Ternary) String() string

func (Ternary) Ternary 

func (t Ternary) Ternary() ternary.Value

type Token 

type Token struct {
	Token   int
	Literal string
	Quoted  bool
}

func (*Token) IsEmpty 

func (t *Token) IsEmpty() bool

type TransactionControl added in v0.1.8 

type TransactionControl struct {
	Token int
}

type UpdateQuery added in v0.1.6 

type UpdateQuery struct {
	Update      string
	Tables      []Expression
	Set         string
	SetList     []Expression
	FromClause  Expression
	WhereClause Expression
}

func (UpdateQuery) String added in v0.1.6 

func (uq UpdateQuery) String() string

type UpdateSet added in v0.1.6 

type UpdateSet struct {
	Field FieldReference
	Value Expression
}

func (UpdateSet) String added in v0.1.6 

func (us UpdateSet) String() string

type Variable 

type Variable struct {
	Name string
}

func (Variable) String 

func (v Variable) String() string

type VariableAssignment 

type VariableAssignment struct {
	Name  string
	Value Expression
}

func (VariableAssignment) String 

func (va VariableAssignment) String() string

type VariableDeclaration 

type VariableDeclaration struct {
	Assignments []Expression
}

type VariableSubstitution 

type VariableSubstitution struct {
	Variable Variable
	Value    Expression
}

func (VariableSubstitution) String 

func (vs VariableSubstitution) String() string

type WhereClause 

type WhereClause struct {
	Where  string
	Filter Expression
}

func (WhereClause) String 

func (w WhereClause) String() string

type While added in v0.1.8 

type While struct {
	Condition  Expression
	Statements []Statement
}

type WhileInCursor added in v0.1.8 

type WhileInCursor struct {
	Variables  []Variable
	Cursor     Identifier
	Statements []Statement
}

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