func (a *Parser) pExchange(p *parse.Parser) parse.StateFn {
tok := p.Peek()
if tok.Type != tokAt || tok.Type != tokAtAt {
return a.pExAmount
}
return nil
}
func (a *Parser) pEndItem(p *parse.Parser) parse.StateFn {
fmt.Println("enditem")
a.currItem.Note = a.currNote
a.currNote = ""
a.currTrans.Items = append(a.currTrans.Items, a.currItem)
if tok := p.Peek(); tok.Type == tokEndTrans {
return nil
}
return a.pItem
}
func (a *Parser) pNote(p *parse.Parser) parse.StateFn {
switch tok := p.Peek(); tok.Type {
case tokMeta:
p.Next()
tok = p.Next()
a.currNote = tok.Val
if tok = p.Next(); tok.Type != tokNewline {
panic(fmt.Sprintf("unexpected token %v: '%v'", tokNames[tok.Type], tok.Val))
}
return nil
default:
return nil
}
}
func (a *Parser) Start(p *parse.Parser) parse.StateFn {
fmt.Println("Start")
a.currNote = ""
switch tok := p.Peek(); tok.Type {
case lex.TokEOF:
return nil
case tokBeginTrans:
fmt.Printf("type %v: %+v\n", tokNames[tok.Type], tok)
return a.pTrans
case tokNewline:
return a.Start
case tokMeta:
p.Push(a.Start)
return a.pNote
default:
panic(fmt.Sprintf("unexpected token %v: '%v'", tokNames[tok.Type], tok.Val))
}
}
func (a *Parser) pExAmount(p *parse.Parser) parse.StateFn {
fmt.Println("examount")
tok := p.Peek()
if tok.Type == tokUnit {
tok = p.Next()
a.currItem.ExCommod = tok.Val
}
switch tok := p.Peek(); tok.Type {
case tokNewline, tokEndTrans:
p.Next()
case tokAmount:
tok = p.Next()
rat := big.NewRat(0, 1)
var success bool
a.currItem.ExAmount, success = rat.SetString(tok.Val)
if !success {
panic("invalid amount")
}
if tok = p.Peek(); tok.Type == tokCommod {
tok = p.Next()
a.currItem.ExCommod = tok.Val
}
}
return nil
}