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Index ¶
- type ArrayLiteral
- type BlockStatement
- type BooleanLiteral
- type CallExpression
- type ConstStatement
- type Expression
- type ExpressionStatement
- type FunctionLiteral
- type HashLiteral
- type Identifier
- type IfStatement
- type IndexExpression
- type InfixExpression
- type IntegerLiteral
- type Node
- type PrefixExpression
- type Program
- type ReturnStatement
- type Statement
- type StringLiteral
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type ArrayLiteral ¶
type ArrayLiteral struct {
token.Token // "["
Elements []Expression
}
ArrayLiteral is a expression represting an array.
func (*ArrayLiteral) String ¶
func (al *ArrayLiteral) String() string
func (*ArrayLiteral) TokenLiteral ¶
func (al *ArrayLiteral) TokenLiteral() string
TokenLiteral returns array's starting token - "["
type BlockStatement ¶
BlockStatement holds multiple statements together
func (*BlockStatement) String ¶
func (bs *BlockStatement) String() string
func (*BlockStatement) TokenLiteral ¶
func (bs *BlockStatement) TokenLiteral() string
TokenLiteral returns the BlockStatement's token.
type BooleanLiteral ¶
BooleanLiteral is a AST node representing boolean token.
func (*BooleanLiteral) String ¶
func (bl *BooleanLiteral) String() string
func (*BooleanLiteral) TokenLiteral ¶
func (bl *BooleanLiteral) TokenLiteral() string
TokenLiteral returns the BooleanLiteral's token.
type CallExpression ¶
type CallExpression struct {
Token token.Token // LPAREN token
Function Expression // Identifier or FunctionLiteral
Arguments []Expression
}
CallExpression is a AST node representing call expression.
func (*CallExpression) String ¶
func (ce *CallExpression) String() string
func (*CallExpression) TokenLiteral ¶
func (ce *CallExpression) TokenLiteral() string
TokenLiteral returns the CallExpression's token.
type ConstStatement ¶
type ConstStatement struct {
Token token.Token
Name *Identifier
Value Expression
}
ConstStatement is a AST node representing "const" token.
func (*ConstStatement) String ¶
func (cs *ConstStatement) String() string
func (*ConstStatement) TokenLiteral ¶
func (cs *ConstStatement) TokenLiteral() string
TokenLiteral returns the ConstStatement's token.
type Expression ¶
type Expression interface {
Node
// contains filtered or unexported methods
}
Expression implements the Node interface.
type ExpressionStatement ¶
type ExpressionStatement struct {
Token token.Token
Expression Expression
}
ExpressionStatement is a AST node representing expression. It is needed for expression to be part of program's Statements list.
func (*ExpressionStatement) String ¶
func (es *ExpressionStatement) String() string
func (*ExpressionStatement) TokenLiteral ¶
func (es *ExpressionStatement) TokenLiteral() string
TokenLiteral returns the ExpressionStatement's token.
type FunctionLiteral ¶
type FunctionLiteral struct {
Token token.Token
Parameters []*Identifier
Body *BlockStatement
}
FunctionLiteral is a AST node representing function literal.
func (*FunctionLiteral) String ¶
func (fl *FunctionLiteral) String() string
func (*FunctionLiteral) TokenLiteral ¶
func (fl *FunctionLiteral) TokenLiteral() string
TokenLiteral returns the FunctionLiteral's token.
type HashLiteral ¶
type HashLiteral struct {
token.Token // "{"
Pairs map[Expression]Expression
}
HashLiteral expression node
func (*HashLiteral) String ¶
func (hl *HashLiteral) String() string
func (*HashLiteral) TokenLiteral ¶
func (hl *HashLiteral) TokenLiteral() string
TokenLiteral returns hash's token
type Identifier ¶
Identifier is a AST node representing identifier token.
func (*Identifier) String ¶
func (i *Identifier) String() string
func (*Identifier) TokenLiteral ¶
func (i *Identifier) TokenLiteral() string
TokenLiteral returns the Identifier's token.
type IfStatement ¶
type IfStatement struct {
Token token.Token
Condition Expression
Consequence *BlockStatement
Alternative *BlockStatement
}
IfStatement is a AST node representing if statement // if (a < b) { print(a); } else { print(b); }
func (*IfStatement) String ¶
func (is *IfStatement) String() string
func (*IfStatement) TokenLiteral ¶
func (is *IfStatement) TokenLiteral() string
TokenLiteral returns the IfStatement's token.
type IndexExpression ¶
type IndexExpression struct {
Token token.Token // "["
Left Expression
Right Expression
}
IndexExpression expression for gettting elements from array
func (*IndexExpression) String ¶
func (ie *IndexExpression) String() string
func (*IndexExpression) TokenLiteral ¶
func (ie *IndexExpression) TokenLiteral() string
TokenLiteral returns IndexExpression "[" token
type InfixExpression ¶
type InfixExpression struct {
Token token.Token
Left Expression
Operator string
Right Expression
}
InfixExpression is a AST node representing infix expression, e.g. 1 + 2.
func (*InfixExpression) String ¶
func (ie *InfixExpression) String() string
func (*InfixExpression) TokenLiteral ¶
func (ie *InfixExpression) TokenLiteral() string
TokenLiteral returns the InfixExpression's token.
type IntegerLiteral ¶
IntegerLiteral is a AST node representing integer token.
func (*IntegerLiteral) String ¶
func (il *IntegerLiteral) String() string
func (*IntegerLiteral) TokenLiteral ¶
func (il *IntegerLiteral) TokenLiteral() string
TokenLiteral returns the IntegerLiteral's token.
type PrefixExpression ¶
type PrefixExpression struct {
Token token.Token
Operator string
Right Expression
}
PrefixExpression is a AST node representing prefix expression, e.g. -1.
func (*PrefixExpression) String ¶
func (pe *PrefixExpression) String() string
func (*PrefixExpression) TokenLiteral ¶
func (pe *PrefixExpression) TokenLiteral() string
TokenLiteral returns the PrefixExpression's token.
type Program ¶
type Program struct {
Statements []Statement
}
Program is the root of ast it holds a list of statements, because that's what the program actually is if you think about it.
func (*Program) TokenLiteral ¶
TokenLiteral returns root element of the AST tree.
type ReturnStatement ¶
type ReturnStatement struct {
Token token.Token
ReturnValue Expression
}
ReturnStatement is a AST node representing "return" token.
func (*ReturnStatement) String ¶
func (rs *ReturnStatement) String() string
func (*ReturnStatement) TokenLiteral ¶
func (rs *ReturnStatement) TokenLiteral() string
TokenLiteral returns the ReturnStatement's token.
type Statement ¶
type Statement interface {
Node
// contains filtered or unexported methods
}
Statement implements the Node interface.
type StringLiteral ¶
StringLiteral is a node representing a string.
func (*StringLiteral) String ¶
func (sl *StringLiteral) String() string
func (*StringLiteral) TokenLiteral ¶
func (sl *StringLiteral) TokenLiteral() string
TokenLiteral returns the string value
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