nodes

package
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 Go to latest Published: Dec 10, 2024 License: MIT Imports: 6 Imported by: 2

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Constants

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const (
	VarTypeInt = iota
	VarTypeIdent
)

Variables

This section is empty.

Functions

func Inspect 

func Inspect(node Node, f func(Node) bool)

Inspect traverses an AST in depth-first order: It starts by calling f(node); node must not be nil. If f returns true, Inspect invokes f recursively for each of the non-nil children of node, followed by a call of f(nil).

func Walk 

func Walk(v Visitor, node Node) error

Types

type BinOperator 

type BinOperator struct {
	Token *tokens.Token
}

func (BinOperator) Position 

func (op BinOperator) Position() *tokens.Token

func (BinOperator) String 

func (op BinOperator) String() string

type BinaryExpression 

type BinaryExpression struct {
	Left     Expression
	Right    Expression
	Operator *BinOperator
}

func (*BinaryExpression) Position 

func (b *BinaryExpression) Position() *tokens.Token

func (*BinaryExpression) String 

func (expr *BinaryExpression) String() string

type BlockSet 

type BlockSet map[string]*Wrapper

func (BlockSet) Exists 

func (bs BlockSet) Exists(name string) bool

Exists returns true if the given block is already registered

func (*BlockSet) Register 

func (bs *BlockSet) Register(name string, w *Wrapper) error

Register registers a new block. If there's already a filter with the same name, Register will panic. You usually want to call this function in the filter's init() function: http://golang.org/doc/effective_go.html#init

See http://www.john-doe.de/post/gonja/ for more about writing filters and tags.

func (*BlockSet) Replace 

func (bs *BlockSet) Replace(name string, w *Wrapper) error

Replace replaces an already registered filter with a new implementation. Use this function with caution since it allobs you to change existing filter behaviour.

type Bool 

type Bool struct {
	Location *tokens.Token
	Val      bool
}

func (*Bool) Position 

func (b *Bool) Position() *tokens.Token

func (*Bool) String 

func (b *Bool) String() string

type Call 

type Call struct {
	Location *tokens.Token
	Func     Node
	Args     []Expression
	Parent   Node
	Kwargs   map[string]Expression
}

func (*Call) Position 

func (c *Call) Position() *tokens.Token

func (*Call) String 

func (c *Call) String() string

type Comment 

type Comment struct {
	Start *tokens.Token // Opening token
	Text  string        // Comment text
	End   *tokens.Token // Closing token
}

A Comment node represents a single {# #} comment.

func (*Comment) Position 

func (c *Comment) Position() *tokens.Token

func (*Comment) String 

func (c *Comment) String() string

func (c *Comment) End() token.Pos { return token.Pos(int(c.Slash) + len(c.Text)) }

type ControlStructure 

type ControlStructure interface {
	Node
}

ControlStructure represents a controlStructure block "{% %}"

type ControlStructureBlock 

type ControlStructureBlock struct {
	Location         *tokens.Token
	Name             string
	ControlStructure ControlStructure
}

func (ControlStructureBlock) Position 

func (s ControlStructureBlock) Position() *tokens.Token

func (ControlStructureBlock) String 

func (s ControlStructureBlock) String() string

type Data 

type Data struct {
	Data                                 *tokens.Token
	Trim                                 Trim
	RemoveFirstLineReturn                bool
	RemoveTrailingWhiteSpaceFromLastLine bool
}

func (*Data) Position 

func (d *Data) Position() *tokens.Token

func (*Data) String 

func (c *Data) String() string

func (c *Comment) End() token.Pos { return token.Pos(int(c.Slash) + len(c.Text)) }

type Dict 

type Dict struct {
	Token *tokens.Token
	Pairs []*Pair
}

func (*Dict) Position 

func (d *Dict) Position() *tokens.Token

func (*Dict) String 

func (d *Dict) String() string

type Error 

type Error struct {
	Location *tokens.Token
	Error    error
}

func (*Error) Position 

func (c *Error) Position() *tokens.Token

func (*Error) String 

func (c *Error) String() string

type Expression 

type Expression interface {
	Node
}

Expression represents an evaluable expression part

type FilterCall 

type FilterCall struct {
	Token *tokens.Token

	Name   string
	Args   []Expression
	Kwargs map[string]Expression
}

type FilteredExpression 

type FilteredExpression struct {
	Expression Expression
	Filters    []*FilterCall
}

func (*FilteredExpression) Position 

func (expr *FilteredExpression) Position() *tokens.Token

func (*FilteredExpression) String 

func (expr *FilteredExpression) String() string

type Float 

type Float struct {
	Location *tokens.Token
	Val      float64
}

func (*Float) Position 

func (f *Float) Position() *tokens.Token

func (*Float) String 

func (f *Float) String() string

type GetAttribute 

type GetAttribute struct {
	Location  *tokens.Token
	Node      Node
	Attribute string
	Index     int
}

func (*GetAttribute) Position 

func (g *GetAttribute) Position() *tokens.Token

func (*GetAttribute) String 

func (g *GetAttribute) String() string

type GetItem 

type GetItem struct {
	Location *tokens.Token
	Node     Node
	Arg      Node
}

func (*GetItem) Position 

func (g *GetItem) Position() *tokens.Token

func (*GetItem) String 

func (g *GetItem) String() string

type GetSlice 

type GetSlice struct {
	Location *tokens.Token
	Node     Node
	Start    Node
	End      Node
}

func (*GetSlice) Position 

func (g *GetSlice) Position() *tokens.Token

func (*GetSlice) String 

func (g *GetSlice) String() string

type Inspector 

type Inspector func(Node) bool

func (Inspector) Visit 

func (f Inspector) Visit(node Node) (Visitor, error)

type Integer 

type Integer struct {
	Location *tokens.Token
	Val      int
}

func (*Integer) Position 

func (i *Integer) Position() *tokens.Token

func (*Integer) String 

func (i *Integer) String() string

type List 

type List struct {
	Location *tokens.Token
	Val      []Expression
}

func (*List) Position 

func (l *List) Position() *tokens.Token

func (*List) String 

func (l *List) String() string

type Macro 

type Macro struct {
	Location *tokens.Token
	Name     string
	Kwargs   []*Pair
	Wrapper  *Wrapper
}

func (*Macro) Position 

func (m *Macro) Position() *tokens.Token

func (*Macro) String 

func (m *Macro) String() string

type Name 

type Name struct {
	Name *tokens.Token
}

func (*Name) Position 

func (n *Name) Position() *tokens.Token

func (*Name) String 

func (n *Name) String() string

type Negation 

type Negation struct {
	Term     Expression
	Operator *tokens.Token
}

func (*Negation) Position 

func (n *Negation) Position() *tokens.Token

func (*Negation) String 

func (n *Negation) String() string

type Node 

type Node interface {
	fmt.Stringer
	Position() *tokens.Token
}

All node types implement the Node interface.

type None 

type None struct {
	Location *tokens.Token
}

func (*None) Position 

func (n *None) Position() *tokens.Token

func (*None) String 

func (n *None) String() string

type Output 

type Output struct {
	Start       *tokens.Token
	Expression  Expression
	Condition   Expression
	Alternative Expression
	End         *tokens.Token
}

Ouput represents a printable expression node {{ }}

func (*Output) Position 

func (o *Output) Position() *tokens.Token

func (*Output) String 

func (o *Output) String() string

type Pair 

type Pair struct {
	Key   Expression
	Value Expression
}

func (*Pair) Position 

func (p *Pair) Position() *tokens.Token

func (*Pair) String 

func (p *Pair) String() string

type String 

type String struct {
	Location *tokens.Token
	Val      string
}

func (*String) Position 

func (s *String) Position() *tokens.Token

func (*String) String 

func (s *String) String() string

type Template 

type Template struct {
	Identifier string
	Nodes      []Node
	Blocks     BlockSet
	Macros     map[string]*Macro
	Parent     *Template
}

Template is the root node of any template

func (*Template) GetBlocks 

func (tpl *Template) GetBlocks(name string) []*Wrapper

func (*Template) Position 

func (t *Template) Position() *tokens.Token

func (*Template) String 

func (t *Template) String() string

type TestCall 

type TestCall struct {
	Token *tokens.Token

	Name   string
	Args   []Expression
	Kwargs map[string]Expression
}

func (*TestCall) String 

func (tc *TestCall) String() string

type TestExpression 

type TestExpression struct {
	Expression Expression
	Test       *TestCall
}

func (*TestExpression) Position 

func (expr *TestExpression) Position() *tokens.Token

func (*TestExpression) String 

func (expr *TestExpression) String() string

type Trim 

type Trim struct {
	Left  bool
	Right bool
}

type Tuple 

type Tuple struct {
	Location *tokens.Token
	Val      []Expression
}

func (*Tuple) Position 

func (t *Tuple) Position() *tokens.Token

func (*Tuple) String 

func (t *Tuple) String() string

type UnaryExpression 

type UnaryExpression struct {
	Negative bool
	Term     Expression
	Operator *tokens.Token
}

func (*UnaryExpression) Position 

func (u *UnaryExpression) Position() *tokens.Token

func (*UnaryExpression) String 

func (u *UnaryExpression) String() string

type Variable 

type Variable struct {
	Location *tokens.Token

	Parts []*VariablePart
}

func (*Variable) Position 

func (v *Variable) Position() *tokens.Token

func (*Variable) String 

func (v *Variable) String() string

type VariablePart 

type VariablePart struct {
	Type int
	S    string
	I    int

	IsFunctionCall bool
	// callingArgs    []functionCallArgument // needed for a function call, represents all argument nodes (Node supports nested function calls)
	Args   []Expression
	Kwargs map[string]Expression
}

func (*VariablePart) String 

func (vp *VariablePart) String() string

type Visitor 

type Visitor interface {
	Visit(node Node) (Visitor, error)
}

type Wrapper 

type Wrapper struct {
	Location *tokens.Token
	Nodes    []Node
	EndTag   string
	Trim     *Trim
	LStrip   bool
}

func (Wrapper) Position 

func (w Wrapper) Position() *tokens.Token

func (Wrapper) String 

func (w Wrapper) String() string

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