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token.go: New functions Clone() and IsOneOfA()

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This commit is contained in:
Celestino Amoroso 2024-07-23 15:26:53 +02:00
parent c76e1d3c8e
commit 837b887490
1 changed files with 8 additions and 0 deletions
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8
token.go
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@ -51,6 +51,10 @@ func NewErrorToken(row, col int, err error) *Token {
return NewValueToken(row, col, SymError, fmt.Sprintf("[%d:%d]", row, col), err)
}
func (tk *Token) Clone() (c *Token) {
return NewValueToken(tk.row, tk.col, tk.Sym, tk.source, tk.Value)
}
func (tk *Token) IsEos() bool {
return tk.Sym == SymEos
}
@ -67,6 +71,10 @@ func (tk *Token) IsOneOf(termSymbols []Symbol) bool {
return termSymbols != nil && slices.Index(termSymbols, tk.Sym) >= 0
}
func (tk *Token) IsOneOfA(termSymbols ...Symbol) bool {
return slices.Index(termSymbols, tk.Sym) >= 0
}
func (tk *Token) IsSymbol(sym Symbol) bool {
return tk.Sym == sym
}