ast

type CharLiteral struct {
	Token lexer.Token
	Value byte
}

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

type ExpressionStatement struct {
	Token      lexer.Token
	Expression Expression
}

type FloatLiteral struct {
	Token lexer.Token
	Value float64
	Type  ValueType
}

type Function struct {
	Name            string
	ReturnType      ValueType
	Statements      []Statement
	SymbolIndex     map[string]int
	Symbols         []*Symbol
	NextSymbolIndex int
}

type Identifier struct {
	Token  lexer.Token
	Value  string
	Symbol *Symbol
}

type InfixExpression struct {
	Token    lexer.Token
	Left     Expression
	Operator string
	Right    Expression
}

type IntegerLiteral struct {
	Token lexer.Token
	Value int64
	Type  ValueType
}

type Node interface {
	TokenLiteral() string
	String() string
	ValueType() ValueType
}

type PrefixExpression struct {
	Token    lexer.Token
	Operator string
	Right    Expression
}

type Program struct {
	Functions []*Function

	// global statements
	Statements []Statement
}

type ReturnStatement struct {
	Token       lexer.Token
	ReturnValue Expression
}

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

type Symbol struct {
	Index    int
	Type     ValueType
	Constant bool
}

type ValueType string

type VariableDefineStatement struct {
	Token lexer.Token
	Name  *Identifier
	Value Expression
	Type  ValueType
}

type VariableUpdateStatement struct {
	Name      *Identifier
	Token     lexer.Token
	NewValue  Expression
	Operation string
}