ast

package
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 Go to latest Published: Nov 2, 2019 License: MIT Imports: 3 Imported by: 0

README

ast

-- import "github.com/robertkrimen/otto/ast"

Package ast declares types representing a JavaScript AST.

Warning

The parser and AST interfaces are still works-in-progress (particularly where node types are concerned) and may change in the future.

Usage

type ArrayLiteral
type ArrayLiteral struct {
	LeftBracket  file.Idx
	RightBracket file.Idx
	Value        []Expression
}
func (*ArrayLiteral) Idx0
func (self *ArrayLiteral) Idx0() file.Idx
func (*ArrayLiteral) Idx1
func (self *ArrayLiteral) Idx1() file.Idx
type AssignExpression
type AssignExpression struct {
	Operator token.Token
	Left     Expression
	Right    Expression
}
func (*AssignExpression) Idx0
func (self *AssignExpression) Idx0() file.Idx
func (*AssignExpression) Idx1
func (self *AssignExpression) Idx1() file.Idx
type BadExpression
type BadExpression struct {
	From file.Idx
	To   file.Idx
}
func (*BadExpression) Idx0
func (self *BadExpression) Idx0() file.Idx
func (*BadExpression) Idx1
func (self *BadExpression) Idx1() file.Idx
type BadStatement
type BadStatement struct {
	From file.Idx
	To   file.Idx
}
func (*BadStatement) Idx0
func (self *BadStatement) Idx0() file.Idx
func (*BadStatement) Idx1
func (self *BadStatement) Idx1() file.Idx
type BinaryExpression
type BinaryExpression struct {
	Operator   token.Token
	Left       Expression
	Right      Expression
	Comparison bool
}
func (*BinaryExpression) Idx0
func (self *BinaryExpression) Idx0() file.Idx
func (*BinaryExpression) Idx1
func (self *BinaryExpression) Idx1() file.Idx
type BlockStatement
type BlockStatement struct {
	LeftBrace  file.Idx
	List       []Statement
	RightBrace file.Idx
}
func (*BlockStatement) Idx0
func (self *BlockStatement) Idx0() file.Idx
func (*BlockStatement) Idx1
func (self *BlockStatement) Idx1() file.Idx
type BooleanLiteral
type BooleanLiteral struct {
	Idx     file.Idx
	Literal string
	Value   bool
}
func (*BooleanLiteral) Idx0
func (self *BooleanLiteral) Idx0() file.Idx
func (*BooleanLiteral) Idx1
func (self *BooleanLiteral) Idx1() file.Idx
type BracketExpression
type BracketExpression struct {
	Left         Expression
	Member       Expression
	LeftBracket  file.Idx
	RightBracket file.Idx
}
func (*BracketExpression) Idx0
func (self *BracketExpression) Idx0() file.Idx
func (*BracketExpression) Idx1
func (self *BracketExpression) Idx1() file.Idx
type BranchStatement
type BranchStatement struct {
	Idx   file.Idx
	Token token.Token
	Label *Identifier
}
func (*BranchStatement) Idx0
func (self *BranchStatement) Idx0() file.Idx
func (*BranchStatement) Idx1
func (self *BranchStatement) Idx1() file.Idx
type CallExpression
type CallExpression struct {
	Callee           Expression
	LeftParenthesis  file.Idx
	ArgumentList     []Expression
	RightParenthesis file.Idx
}
func (*CallExpression) Idx0
func (self *CallExpression) Idx0() file.Idx
func (*CallExpression) Idx1
func (self *CallExpression) Idx1() file.Idx
type CaseStatement
type CaseStatement struct {
	Case       file.Idx
	Test       Expression
	Consequent []Statement
}
func (*CaseStatement) Idx0
func (self *CaseStatement) Idx0() file.Idx
func (*CaseStatement) Idx1
func (self *CaseStatement) Idx1() file.Idx
type CatchStatement
type CatchStatement struct {
	Catch     file.Idx
	Parameter *Identifier
	Body      Statement
}
func (*CatchStatement) Idx0
func (self *CatchStatement) Idx0() file.Idx
func (*CatchStatement) Idx1
func (self *CatchStatement) Idx1() file.Idx
type ConditionalExpression
type ConditionalExpression struct {
	Test       Expression
	Consequent Expression
	Alternate  Expression
}
func (*ConditionalExpression) Idx0
func (self *ConditionalExpression) Idx0() file.Idx
func (*ConditionalExpression) Idx1
func (self *ConditionalExpression) Idx1() file.Idx
type DebuggerStatement
type DebuggerStatement struct {
	Debugger file.Idx
}
func (*DebuggerStatement) Idx0
func (self *DebuggerStatement) Idx0() file.Idx
func (*DebuggerStatement) Idx1
func (self *DebuggerStatement) Idx1() file.Idx
type Declaration
type Declaration interface {
	// contains filtered or unexported methods
}

All declaration nodes implement the Declaration interface.

type DoWhileStatement
type DoWhileStatement struct {
	Do   file.Idx
	Test Expression
	Body Statement
}
func (*DoWhileStatement) Idx0
func (self *DoWhileStatement) Idx0() file.Idx
func (*DoWhileStatement) Idx1
func (self *DoWhileStatement) Idx1() file.Idx
type DotExpression
type DotExpression struct {
	Left       Expression
	Identifier Identifier
}
func (*DotExpression) Idx0
func (self *DotExpression) Idx0() file.Idx
func (*DotExpression) Idx1
func (self *DotExpression) Idx1() file.Idx
type EmptyStatement
type EmptyStatement struct {
	Semicolon file.Idx
}
func (*EmptyStatement) Idx0
func (self *EmptyStatement) Idx0() file.Idx
func (*EmptyStatement) Idx1
func (self *EmptyStatement) Idx1() file.Idx
type Expression
type Expression interface {
	Node
	// contains filtered or unexported methods
}

All expression nodes implement the Expression interface.

type ExpressionStatement
type ExpressionStatement struct {
	Expression Expression
}
func (*ExpressionStatement) Idx0
func (self *ExpressionStatement) Idx0() file.Idx
func (*ExpressionStatement) Idx1
func (self *ExpressionStatement) Idx1() file.Idx
type ForInStatement
type ForInStatement struct {
	For    file.Idx
	Into   Expression
	Source Expression
	Body   Statement
}
func (*ForInStatement) Idx0
func (self *ForInStatement) Idx0() file.Idx
func (*ForInStatement) Idx1
func (self *ForInStatement) Idx1() file.Idx
type ForStatement
type ForStatement struct {
	For         file.Idx
	Initializer Expression
	Update      Expression
	Test        Expression
	Body        Statement
}
func (*ForStatement) Idx0
func (self *ForStatement) Idx0() file.Idx
func (*ForStatement) Idx1
func (self *ForStatement) Idx1() file.Idx
type FunctionDeclaration
type FunctionDeclaration struct {
	Function *FunctionLiteral
}
type FunctionLiteral
type FunctionLiteral struct {
	Function      file.Idx
	Name          *Identifier
	ParameterList *ParameterList
	Body          Statement
	Source        string

	DeclarationList []Declaration
}
func (*FunctionLiteral) Idx0
func (self *FunctionLiteral) Idx0() file.Idx
func (*FunctionLiteral) Idx1
func (self *FunctionLiteral) Idx1() file.Idx
type Identifier
type Identifier struct {
	Name string
	Idx  file.Idx
}
func (*Identifier) Idx0
func (self *Identifier) Idx0() file.Idx
func (*Identifier) Idx1
func (self *Identifier) Idx1() file.Idx
type IfStatement
type IfStatement struct {
	If         file.Idx
	Test       Expression
	Consequent Statement
	Alternate  Statement
}
func (*IfStatement) Idx0
func (self *IfStatement) Idx0() file.Idx
func (*IfStatement) Idx1
func (self *IfStatement) Idx1() file.Idx
type LabelledStatement
type LabelledStatement struct {
	Label     *Identifier
	Colon     file.Idx
	Statement Statement
}
func (*LabelledStatement) Idx0
func (self *LabelledStatement) Idx0() file.Idx
func (*LabelledStatement) Idx1
func (self *LabelledStatement) Idx1() file.Idx
type NewExpression
type NewExpression struct {
	New              file.Idx
	Callee           Expression
	LeftParenthesis  file.Idx
	ArgumentList     []Expression
	RightParenthesis file.Idx
}
func (*NewExpression) Idx0
func (self *NewExpression) Idx0() file.Idx
func (*NewExpression) Idx1
func (self *NewExpression) Idx1() file.Idx
type Node
type Node interface {
	Idx0() file.Idx // The index of the first character belonging to the node
	Idx1() file.Idx // The index of the first character immediately after the node
}

All nodes implement the Node interface.

type NullLiteral
type NullLiteral struct {
	Idx     file.Idx
	Literal string
}
func (*NullLiteral) Idx0
func (self *NullLiteral) Idx0() file.Idx
func (*NullLiteral) Idx1
func (self *NullLiteral) Idx1() file.Idx
type NumberLiteral
type NumberLiteral struct {
	Idx     file.Idx
	Literal string
	Value   interface{}
}
func (*NumberLiteral) Idx0
func (self *NumberLiteral) Idx0() file.Idx
func (*NumberLiteral) Idx1
func (self *NumberLiteral) Idx1() file.Idx
type ObjectLiteral
type ObjectLiteral struct {
	LeftBrace  file.Idx
	RightBrace file.Idx
	Value      []Property
}
func (*ObjectLiteral) Idx0
func (self *ObjectLiteral) Idx0() file.Idx
func (*ObjectLiteral) Idx1
func (self *ObjectLiteral) Idx1() file.Idx
type ParameterList
type ParameterList struct {
	Opening file.Idx
	List    []*Identifier
	Closing file.Idx
}
type Program
type Program struct {
	Body []Statement

	DeclarationList []Declaration

	File *file.File
}
func (*Program) Idx0
func (self *Program) Idx0() file.Idx
func (*Program) Idx1
func (self *Program) Idx1() file.Idx
type Property
type Property struct {
	Key   string
	Kind  string
	Value Expression
}
type RegExpLiteral
type RegExpLiteral struct {
	Idx     file.Idx
	Literal string
	Pattern string
	Flags   string
	Value   string
}
func (*RegExpLiteral) Idx0
func (self *RegExpLiteral) Idx0() file.Idx
func (*RegExpLiteral) Idx1
func (self *RegExpLiteral) Idx1() file.Idx
type ReturnStatement
type ReturnStatement struct {
	Return   file.Idx
	Argument Expression
}
func (*ReturnStatement) Idx0
func (self *ReturnStatement) Idx0() file.Idx
func (*ReturnStatement) Idx1
func (self *ReturnStatement) Idx1() file.Idx
type SequenceExpression
type SequenceExpression struct {
	Sequence []Expression
}
func (*SequenceExpression) Idx0
func (self *SequenceExpression) Idx0() file.Idx
func (*SequenceExpression) Idx1
func (self *SequenceExpression) Idx1() file.Idx
type Statement
type Statement interface {
	Node
	// contains filtered or unexported methods
}

All statement nodes implement the Statement interface.

type StringLiteral
type StringLiteral struct {
	Idx     file.Idx
	Literal string
	Value   string
}
func (*StringLiteral) Idx0
func (self *StringLiteral) Idx0() file.Idx
func (*StringLiteral) Idx1
func (self *StringLiteral) Idx1() file.Idx
type SwitchStatement
type SwitchStatement struct {
	Switch       file.Idx
	Discriminant Expression
	Default      int
	Body         []*CaseStatement
}
func (*SwitchStatement) Idx0
func (self *SwitchStatement) Idx0() file.Idx
func (*SwitchStatement) Idx1
func (self *SwitchStatement) Idx1() file.Idx
type ThisExpression
type ThisExpression struct {
	Idx file.Idx
}
func (*ThisExpression) Idx0
func (self *ThisExpression) Idx0() file.Idx
func (*ThisExpression) Idx1
func (self *ThisExpression) Idx1() file.Idx
type ThrowStatement
type ThrowStatement struct {
	Throw    file.Idx
	Argument Expression
}
func (*ThrowStatement) Idx0
func (self *ThrowStatement) Idx0() file.Idx
func (*ThrowStatement) Idx1
func (self *ThrowStatement) Idx1() file.Idx
type TryStatement
type TryStatement struct {
	Try     file.Idx
	Body    Statement
	Catch   *CatchStatement
	Finally Statement
}
func (*TryStatement) Idx0
func (self *TryStatement) Idx0() file.Idx
func (*TryStatement) Idx1
func (self *TryStatement) Idx1() file.Idx
type UnaryExpression
type UnaryExpression struct {
	Operator token.Token
	Idx      file.Idx // If a prefix operation
	Operand  Expression
	Postfix  bool
}
func (*UnaryExpression) Idx0
func (self *UnaryExpression) Idx0() file.Idx
func (*UnaryExpression) Idx1
func (self *UnaryExpression) Idx1() file.Idx
type VariableDeclaration
type VariableDeclaration struct {
	Var  file.Idx
	List []*VariableExpression
}
type VariableExpression
type VariableExpression struct {
	Name        string
	Idx         file.Idx
	Initializer Expression
}
func (*VariableExpression) Idx0
func (self *VariableExpression) Idx0() file.Idx
func (*VariableExpression) Idx1
func (self *VariableExpression) Idx1() file.Idx
type VariableStatement
type VariableStatement struct {
	Var  file.Idx
	List []Expression
}
func (*VariableStatement) Idx0
func (self *VariableStatement) Idx0() file.Idx
func (*VariableStatement) Idx1
func (self *VariableStatement) Idx1() file.Idx
type WhileStatement
type WhileStatement struct {
	While file.Idx
	Test  Expression
	Body  Statement
}
func (*WhileStatement) Idx0
func (self *WhileStatement) Idx0() file.Idx
func (*WhileStatement) Idx1
func (self *WhileStatement) Idx1() file.Idx
type WithStatement
type WithStatement struct {
	With   file.Idx
	Object Expression
	Body   Statement
}
func (*WithStatement) Idx0
func (self *WithStatement) Idx0() file.Idx
func (*WithStatement) Idx1
func (self *WithStatement) Idx1() file.Idx

-- godocdown http://github.com/robertkrimen/godocdown

Documentation

Overview

Package ast declares types representing a JavaScript AST.

Warning

The parser and AST interfaces are still works-in-progress (particularly where node types are concerned) and may change in the future.

Index

Examples

Constants

This section is empty.

Variables

This section is empty.

Functions

func Walk 

func Walk(v Visitor, n Node)

Walk traverses an AST in depth-first order: It starts by calling v.Enter(node); node must not be nil. If the visitor v returned by v.Enter(node) is not nil, Walk is invoked recursively with visitor v for each of the non-nil children of node, followed by a call of v.Exit(node).

Types

type ArrayLiteral 

type ArrayLiteral struct {
	LeftBracket  file.Idx
	RightBracket file.Idx
	Value        []Expression
}

func (*ArrayLiteral) Idx0 

func (self *ArrayLiteral) Idx0() file.Idx

func (*ArrayLiteral) Idx1 

func (self *ArrayLiteral) Idx1() file.Idx

type AssignExpression 

type AssignExpression struct {
	Operator token.Token
	Left     Expression
	Right    Expression
}

func (*AssignExpression) Idx0 

func (self *AssignExpression) Idx0() file.Idx

func (*AssignExpression) Idx1 

func (self *AssignExpression) Idx1() file.Idx

type BadExpression 

type BadExpression struct {
	From file.Idx
	To   file.Idx
}

func (*BadExpression) Idx0 

func (self *BadExpression) Idx0() file.Idx

func (*BadExpression) Idx1 

func (self *BadExpression) Idx1() file.Idx

type BadStatement 

type BadStatement struct {
	From file.Idx
	To   file.Idx
}

func (*BadStatement) Idx0 

func (self *BadStatement) Idx0() file.Idx

func (*BadStatement) Idx1 

func (self *BadStatement) Idx1() file.Idx

type BinaryExpression 

type BinaryExpression struct {
	Operator   token.Token
	Left       Expression
	Right      Expression
	Comparison bool
}

func (*BinaryExpression) Idx0 

func (self *BinaryExpression) Idx0() file.Idx

func (*BinaryExpression) Idx1 

func (self *BinaryExpression) Idx1() file.Idx

type BlockStatement 

type BlockStatement struct {
	LeftBrace  file.Idx
	List       []Statement
	RightBrace file.Idx
}

func (*BlockStatement) Idx0 

func (self *BlockStatement) Idx0() file.Idx

func (*BlockStatement) Idx1 

func (self *BlockStatement) Idx1() file.Idx

type BooleanLiteral 

type BooleanLiteral struct {
	Idx     file.Idx
	Literal string
	Value   bool
}

func (*BooleanLiteral) Idx0 

func (self *BooleanLiteral) Idx0() file.Idx

func (*BooleanLiteral) Idx1 

func (self *BooleanLiteral) Idx1() file.Idx

type BracketExpression 

type BracketExpression struct {
	Left         Expression
	Member       Expression
	LeftBracket  file.Idx
	RightBracket file.Idx
}

func (*BracketExpression) Idx0 

func (self *BracketExpression) Idx0() file.Idx

func (*BracketExpression) Idx1 

func (self *BracketExpression) Idx1() file.Idx

type BranchStatement 

type BranchStatement struct {
	Idx   file.Idx
	Token token.Token
	Label *Identifier
}

func (*BranchStatement) Idx0 

func (self *BranchStatement) Idx0() file.Idx

func (*BranchStatement) Idx1 

func (self *BranchStatement) Idx1() file.Idx

type CallExpression 

type CallExpression struct {
	Callee           Expression
	LeftParenthesis  file.Idx
	ArgumentList     []Expression
	RightParenthesis file.Idx
}

func (*CallExpression) Idx0 

func (self *CallExpression) Idx0() file.Idx

func (*CallExpression) Idx1 

func (self *CallExpression) Idx1() file.Idx

type CaseStatement 

type CaseStatement struct {
	Case       file.Idx
	Test       Expression
	Consequent []Statement
}

func (*CaseStatement) Idx0 

func (self *CaseStatement) Idx0() file.Idx

func (*CaseStatement) Idx1 

func (self *CaseStatement) Idx1() file.Idx

type CatchStatement 

type CatchStatement struct {
	Catch     file.Idx
	Parameter *Identifier
	Body      Statement
}

func (*CatchStatement) Idx0 

func (self *CatchStatement) Idx0() file.Idx

func (*CatchStatement) Idx1 

func (self *CatchStatement) Idx1() file.Idx

type Comment 

type Comment struct {
	Begin    file.Idx
	Text     string
	Position CommentPosition
}

Comment contains the data of the comment

func NewComment 

func NewComment(text string, idx file.Idx) *Comment

NewComment creates a new comment

func (Comment) String 

func (c Comment) String() string

String returns a stringified version of the comment

type CommentMap 

type CommentMap map[Node][]*Comment

CommentMap is the data structure where all found comments are stored

func (CommentMap) AddComment 

func (cm CommentMap) AddComment(node Node, comment *Comment)

AddComment adds a single comment to the map

func (CommentMap) AddComments 

func (cm CommentMap) AddComments(node Node, comments []*Comment, position CommentPosition)

AddComments adds a slice of comments, given a node and an updated position

func (CommentMap) MoveComments 

func (cm CommentMap) MoveComments(from, to Node, position CommentPosition)

MoveComments moves comments with a given position from a node to another

func (CommentMap) Size 

func (cm CommentMap) Size() int

Size returns the size of the map

type CommentPosition 

type CommentPosition int

CommentPosition determines where the comment is in a given context 

const (
	LEADING  CommentPosition // Before the pertinent expression
	TRAILING                 // After the pertinent expression
	KEY                      // Before a key in an object
	COLON                    // After a colon in a field declaration
	FINAL                    // Final comments in a block, not belonging to a specific expression or the comment after a trailing , in an array or object literal
	IF                       // After an if keyword
	WHILE                    // After a while keyword
	DO                       // After do keyword
	FOR                      // After a for keyword
	WITH                     // After a with keyword
	TBD
)

func (CommentPosition) String 

func (cp CommentPosition) String() string

String returns a stringified version of the position

type Comments 

type Comments struct {
	// CommentMap is a reference to the parser comment map
	CommentMap CommentMap
	// Comments lists the comments scanned, not linked to a node yet
	Comments []*Comment

	// Current is node for which comments are linked to
	Current Expression
	// contains filtered or unexported fields
}

Comments defines the current view of comments from the parser

func NewComments 

func NewComments() *Comments

func (*Comments) AddComment 

func (c *Comments) AddComment(comment *Comment)

AddComment adds a comment to the view. Depending on the context, comments are added normally or as post line break.

func (*Comments) AfterBlock 

func (c *Comments) AfterBlock()

AfterBlock will mark the context as being after a block.

func (*Comments) AtLineBreak 

func (c *Comments) AtLineBreak()

AtLineBreak will mark a line break

func (*Comments) Fetch 

func (c *Comments) Fetch() []*Comment

Fetch returns all the currently scanned comments

func (*Comments) FetchAll 

func (c *Comments) FetchAll() []*Comment

FetchAll returns all the currently scanned comments, including those from the next line

func (*Comments) MarkComments 

func (c *Comments) MarkComments(position CommentPosition)

MarkComments will mark the found comments as the given position.

func (*Comments) MarkPrimary 

func (c *Comments) MarkPrimary()

MarkPrimary will mark the context as processing a primary expression

func (*Comments) PostProcessNode 

func (c *Comments) PostProcessNode(node Node)

PostProcessNode applies all found comments to the given node

func (*Comments) ResetLineBreak 

func (c *Comments) ResetLineBreak()

ResetLineBreak marks the beginning of a new statement

func (*Comments) SetExpression 

func (c *Comments) SetExpression(node Expression)

SetExpression sets the current expression. It is applied the found comments, unless the previous expression has not been unset. It is skipped if the node is already set or if it is a part of the previous node.

func (*Comments) String 

func (c *Comments) String() string

func (*Comments) Unset 

func (c *Comments) Unset()

Unset the current node and apply the comments to the current expression. Resets context variables.

type ConditionalExpression 

type ConditionalExpression struct {
	Test       Expression
	Consequent Expression
	Alternate  Expression
}

func (*ConditionalExpression) Idx0 

func (self *ConditionalExpression) Idx0() file.Idx

func (*ConditionalExpression) Idx1 

func (self *ConditionalExpression) Idx1() file.Idx

type DebuggerStatement 

type DebuggerStatement struct {
	Debugger file.Idx
}

func (*DebuggerStatement) Idx0 

func (self *DebuggerStatement) Idx0() file.Idx

func (*DebuggerStatement) Idx1 

func (self *DebuggerStatement) Idx1() file.Idx

type Declaration 

type Declaration interface {
	// contains filtered or unexported methods
}

All declaration nodes implement the Declaration interface.

type DoWhileStatement 

type DoWhileStatement struct {
	Do   file.Idx
	Test Expression
	Body Statement
}

func (*DoWhileStatement) Idx0 

func (self *DoWhileStatement) Idx0() file.Idx

func (*DoWhileStatement) Idx1 

func (self *DoWhileStatement) Idx1() file.Idx

type DotExpression 

type DotExpression struct {
	Left       Expression
	Identifier *Identifier
}

func (*DotExpression) Idx0 

func (self *DotExpression) Idx0() file.Idx

func (*DotExpression) Idx1 

func (self *DotExpression) Idx1() file.Idx

type EmptyExpression 

type EmptyExpression struct {
	Begin file.Idx
	End   file.Idx
}

func (*EmptyExpression) Idx0 

func (self *EmptyExpression) Idx0() file.Idx

func (*EmptyExpression) Idx1 

func (self *EmptyExpression) Idx1() file.Idx

type EmptyStatement 

type EmptyStatement struct {
	Semicolon file.Idx
}

func (*EmptyStatement) Idx0 

func (self *EmptyStatement) Idx0() file.Idx

func (*EmptyStatement) Idx1 

func (self *EmptyStatement) Idx1() file.Idx

type Expression 

type Expression interface {
	Node
	// contains filtered or unexported methods
}

All expression nodes implement the Expression interface.

type ExpressionStatement 

type ExpressionStatement struct {
	Expression Expression
}

func (*ExpressionStatement) Idx0 

func (self *ExpressionStatement) Idx0() file.Idx

func (*ExpressionStatement) Idx1 

func (self *ExpressionStatement) Idx1() file.Idx

type ForInStatement 

type ForInStatement struct {
	For    file.Idx
	Into   Expression
	Source Expression
	Body   Statement
}

func (*ForInStatement) Idx0 

func (self *ForInStatement) Idx0() file.Idx

func (*ForInStatement) Idx1 

func (self *ForInStatement) Idx1() file.Idx

type ForStatement 

type ForStatement struct {
	For         file.Idx
	Initializer Expression
	Update      Expression
	Test        Expression
	Body        Statement
}

func (*ForStatement) Idx0 

func (self *ForStatement) Idx0() file.Idx

func (*ForStatement) Idx1 

func (self *ForStatement) Idx1() file.Idx

type FunctionDeclaration 

type FunctionDeclaration struct {
	Function *FunctionLiteral
}

type FunctionLiteral 

type FunctionLiteral struct {
	Function      file.Idx
	Name          *Identifier
	ParameterList *ParameterList
	Body          Statement
	Source        string

	DeclarationList []Declaration
}

func (*FunctionLiteral) Idx0 

func (self *FunctionLiteral) Idx0() file.Idx

func (*FunctionLiteral) Idx1 

func (self *FunctionLiteral) Idx1() file.Idx

type FunctionStatement 

type FunctionStatement struct {
	Function *FunctionLiteral
}

func (*FunctionStatement) Idx0 

func (self *FunctionStatement) Idx0() file.Idx

func (*FunctionStatement) Idx1 

func (self *FunctionStatement) Idx1() file.Idx

type Identifier 

type Identifier struct {
	Name string
	Idx  file.Idx
}

func (*Identifier) Idx0 

func (self *Identifier) Idx0() file.Idx

func (*Identifier) Idx1 

func (self *Identifier) Idx1() file.Idx

type IfStatement 

type IfStatement struct {
	If         file.Idx
	Test       Expression
	Consequent Statement
	Alternate  Statement
}

func (*IfStatement) Idx0 

func (self *IfStatement) Idx0() file.Idx

func (*IfStatement) Idx1 

func (self *IfStatement) Idx1() file.Idx

type LabelledStatement 

type LabelledStatement struct {
	Label     *Identifier
	Colon     file.Idx
	Statement Statement
}

func (*LabelledStatement) Idx0 

func (self *LabelledStatement) Idx0() file.Idx

func (*LabelledStatement) Idx1 

func (self *LabelledStatement) Idx1() file.Idx

type NewExpression 

type NewExpression struct {
	New              file.Idx
	Callee           Expression
	LeftParenthesis  file.Idx
	ArgumentList     []Expression
	RightParenthesis file.Idx
}

func (*NewExpression) Idx0 

func (self *NewExpression) Idx0() file.Idx

func (*NewExpression) Idx1 

func (self *NewExpression) Idx1() file.Idx

type Node 

type Node interface {
	Idx0() file.Idx // The index of the first character belonging to the node
	Idx1() file.Idx // The index of the first character immediately after the node
}

All nodes implement the Node interface.

type NullLiteral 

type NullLiteral struct {
	Idx     file.Idx
	Literal string
}

func (*NullLiteral) Idx0 

func (self *NullLiteral) Idx0() file.Idx

func (*NullLiteral) Idx1 

func (self *NullLiteral) Idx1() file.Idx

type NumberLiteral 

type NumberLiteral struct {
	Idx     file.Idx
	Literal string
	Value   interface{}
}

func (*NumberLiteral) Idx0 

func (self *NumberLiteral) Idx0() file.Idx

func (*NumberLiteral) Idx1 

func (self *NumberLiteral) Idx1() file.Idx

type ObjectLiteral 

type ObjectLiteral struct {
	LeftBrace  file.Idx
	RightBrace file.Idx
	Value      []Property
}

func (*ObjectLiteral) Idx0 

func (self *ObjectLiteral) Idx0() file.Idx

func (*ObjectLiteral) Idx1 

func (self *ObjectLiteral) Idx1() file.Idx

type ParameterList 

type ParameterList struct {
	Opening file.Idx
	List    []*Identifier
	Closing file.Idx
}

type Program 

type Program struct {
	Body []Statement

	DeclarationList []Declaration

	File *file.File

	Comments CommentMap
}

func (*Program) Idx0 

func (self *Program) Idx0() file.Idx

func (*Program) Idx1 

func (self *Program) Idx1() file.Idx

type Property 

type Property struct {
	Key   string
	Kind  string
	Value Expression
}

type RegExpLiteral 

type RegExpLiteral struct {
	Idx     file.Idx
	Literal string
	Pattern string
	Flags   string
	Value   string
}

func (*RegExpLiteral) Idx0 

func (self *RegExpLiteral) Idx0() file.Idx

func (*RegExpLiteral) Idx1 

func (self *RegExpLiteral) Idx1() file.Idx

type ReturnStatement 

type ReturnStatement struct {
	Return   file.Idx
	Argument Expression
}

func (*ReturnStatement) Idx0 

func (self *ReturnStatement) Idx0() file.Idx

func (*ReturnStatement) Idx1 

func (self *ReturnStatement) Idx1() file.Idx

type SequenceExpression 

type SequenceExpression struct {
	Sequence []Expression
}

func (*SequenceExpression) Idx0 

func (self *SequenceExpression) Idx0() file.Idx

func (*SequenceExpression) Idx1 

func (self *SequenceExpression) Idx1() file.Idx

type Statement 

type Statement interface {
	Node
	// contains filtered or unexported methods
}

All statement nodes implement the Statement interface.

type StringLiteral 

type StringLiteral struct {
	Idx     file.Idx
	Literal string
	Value   string
}

func (*StringLiteral) Idx0 

func (self *StringLiteral) Idx0() file.Idx

func (*StringLiteral) Idx1 

func (self *StringLiteral) Idx1() file.Idx

type SwitchStatement 

type SwitchStatement struct {
	Switch       file.Idx
	Discriminant Expression
	Default      int
	Body         []*CaseStatement
}

func (*SwitchStatement) Idx0 

func (self *SwitchStatement) Idx0() file.Idx

func (*SwitchStatement) Idx1 

func (self *SwitchStatement) Idx1() file.Idx

type ThisExpression 

type ThisExpression struct {
	Idx file.Idx
}

func (*ThisExpression) Idx0 

func (self *ThisExpression) Idx0() file.Idx

func (*ThisExpression) Idx1 

func (self *ThisExpression) Idx1() file.Idx

type ThrowStatement 

type ThrowStatement struct {
	Throw    file.Idx
	Argument Expression
}

func (*ThrowStatement) Idx0 

func (self *ThrowStatement) Idx0() file.Idx

func (*ThrowStatement) Idx1 

func (self *ThrowStatement) Idx1() file.Idx

type TryStatement 

type TryStatement struct {
	Try     file.Idx
	Body    Statement
	Catch   *CatchStatement
	Finally Statement
}

func (*TryStatement) Idx0 

func (self *TryStatement) Idx0() file.Idx

func (*TryStatement) Idx1 

func (self *TryStatement) Idx1() file.Idx

type UnaryExpression 

type UnaryExpression struct {
	Operator token.Token
	Idx      file.Idx // If a prefix operation
	Operand  Expression
	Postfix  bool
}

func (*UnaryExpression) Idx0 

func (self *UnaryExpression) Idx0() file.Idx

func (*UnaryExpression) Idx1 

func (self *UnaryExpression) Idx1() file.Idx

type VariableDeclaration 

type VariableDeclaration struct {
	Var  file.Idx
	List []*VariableExpression
}

type VariableExpression 

type VariableExpression struct {
	Name        string
	Idx         file.Idx
	Initializer Expression
}

func (*VariableExpression) Idx0 

func (self *VariableExpression) Idx0() file.Idx

func (*VariableExpression) Idx1 

func (self *VariableExpression) Idx1() file.Idx

type VariableStatement 

type VariableStatement struct {
	Var  file.Idx
	List []Expression
}

func (*VariableStatement) Idx0 

func (self *VariableStatement) Idx0() file.Idx

func (*VariableStatement) Idx1 

func (self *VariableStatement) Idx1() file.Idx

type Visitor 

type Visitor interface {
	Enter(n Node) (v Visitor)
	Exit(n Node)
}

Visitor Enter method is invoked for each node encountered by Walk. If the result visitor w is not nil, Walk visits each of the children of node with the visitor v, followed by a call of the Exit method.

Example (CodeRewrite) 
package main

import (
	"fmt"
	"log"

	"github.com/robertkrimen/otto/ast"
	"github.com/robertkrimen/otto/file"
	"github.com/robertkrimen/otto/parser"
)

type walkExample struct {
	source string
	shift  file.Idx
}

func (w *walkExample) Enter(n ast.Node) ast.Visitor {
	if id, ok := n.(*ast.Identifier); ok && id != nil {
		idx := n.Idx0() + w.shift - 1
		s := w.source[:idx] + "new_" + w.source[idx:]
		w.source = s
		w.shift += 4
	}
	if v, ok := n.(*ast.VariableExpression); ok && v != nil {
		idx := n.Idx0() + w.shift - 1
		s := w.source[:idx] + "varnew_" + w.source[idx:]
		w.source = s
		w.shift += 7
	}

	return w
}

func (w *walkExample) Exit(n ast.Node) {
	// AST node n has had all its children walked. Pop it out of your
	// stack, or do whatever processing you need to do, if any.
}

func main() {
	source := `var b = function() {test(); try {} catch(e) {} var test = "test(); var test = 1"} // test`
	program, err := parser.ParseFile(nil, "", source, 0)
	if err != nil {
		log.Fatal(err)
	}

	w := &walkExample{source: source}

	ast.Walk(w, program)

	fmt.Println(w.source)
}

Output:

var varnew_b = function() {new_test(); try {} catch(new_e) {} var varnew_test = "test(); var test = 1"} // test

type WhileStatement 

type WhileStatement struct {
	While file.Idx
	Test  Expression
	Body  Statement
}

func (*WhileStatement) Idx0 

func (self *WhileStatement) Idx0() file.Idx

func (*WhileStatement) Idx1 

func (self *WhileStatement) Idx1() file.Idx

type WithStatement 

type WithStatement struct {
	With   file.Idx
	Object Expression
	Body   Statement
}

func (*WithStatement) Idx0 

func (self *WithStatement) Idx0() file.Idx

func (*WithStatement) Idx1 

func (self *WithStatement) Idx1() file.Idx

Source Files

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