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package expression
import (
"fmt"
"go/token"
"strconv"
)
type Token struct {
Token token.Token
Literal string
Pos int
}
func (t *Token) Int() (int, bool) {
if t.Token != token.INT {
return 0, false
}
i, _ := strconv.Atoi(t.Literal)
return i, true
}
func (t *Token) Float() float64 {
i, _ := strconv.ParseFloat(t.Literal, 64)
return i
}
func (t *Token) IsNumber() bool {
return t.Token == token.INT || t.Token == token.FLOAT
}
func (t *Token) LP() bool {
return t.Token == token.LPAREN
}
func (t *Token) RP() bool {
return t.Token == token.RPAREN
}
func (t *Token) IsFunc() bool {
return t.Token == token.IDENT
}
func (t *Token) IsSeparator() bool {
return t.Token == token.COMMA
}
func (t *Token) IsOperator() bool {
return t.Token.IsOperator() && !t.LP() && !t.RP()
}
func (t *Token) IsError() bool {
return t.Token != token.ILLEGAL
}
func (t *Token) Error() error {
if t.Token != token.ILLEGAL {
return nil
}
return fmt.Errorf(t.Literal)
}
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