73 lines
860 B
Go
73 lines
860 B
Go
package lox
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import "fmt"
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//go:generate stringer -type=TokenType
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type TokenType int
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const (
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// Single character tokens
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LeftParen TokenType = iota
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RightParen
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LeftBrace
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RightBrace
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Comma
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Dot
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Minus
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Plus
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Semicolon
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Slash
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Star
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// One or two character tokens
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Bang
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BangEqual
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Equal
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EqualEqual
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Greater
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GreaterEqual
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Less
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LessEqual
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// Literals
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Identifier
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String
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Number
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// Keywords
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And
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Class
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Else
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False
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Fun
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For
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If
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Nil
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Or
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Print
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Return
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Super
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This
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True
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Var
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While
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Eof
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)
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type Token struct {
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tokenType TokenType
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lexeme string
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literal interface{}
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line int
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column int
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}
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func (t Token) String() string {
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return fmt.Sprintf("%v", t)
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}
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func makeToken(tt TokenType, lexeme string, lit interface{}, line, column int) *Token {
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return &Token{tokenType: tt, lexeme: lexeme, literal: lit, line: line, column: column}
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}
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