示例#1
0
文件: parser.go 项目: mk2/yon
func parseChainWordBody(p *parser, expectType kit.WordType) (kit.ChainWord, kit.WordType) {

	w := word.NewChainWord()
	actualType := expectType

PARSE_WORD_CHAIN_LOOP:
	for {
		switch t := p.peek(); {

		case w.Size() > 0 && t.GetType() == token.TDblColon:
			// TDblColon indicates the word is a dict word
			actualType = word.TDictWord
			p.next()

		case t.GetType() == token.TNumber:
			w.Push(word.NewNumberWord(t.GetVal()))
			p.next()

		case t.GetType() == token.TString:
			w.Push(word.NewStringWord(t.GetVal()))
			p.next()

		case t.GetType() == token.TIdentifier:
			ident := t.GetVal()
			if v := p.memo.Vocab().Read(ident); v != nil {
				w.Push(v)
			} else {
				w.Push(word.NewNameWord(ident))
			}
			p.next()

		case t.GetType() == token.TLeftBrace:
			if aw, dw := parseArrayDictBody(p); aw != nil {
				w.Push(aw)
			} else if dw != nil {
				w.Push(dw)
			}

		case t.GetType() == token.TLeftSquareBracket:
			w.Push(parseAnonFuncBody(p))

		case expectType == word.TArrayWord && t.GetType() == token.TRightBrace:
			p.next()
			break PARSE_WORD_CHAIN_LOOP

		case expectType == word.TFuncWord && t.GetType() == token.TRightSquareBracket:
			p.next()
			break PARSE_WORD_CHAIN_LOOP

		case t.GetType() == token.TEOF:
			break PARSE_WORD_CHAIN_LOOP

		case t.GetType() == token.TSpace:
			p.next()
		}
	}

	return w, actualType
}
示例#2
0
文件: parser.go 项目: mk2/yon
func parseIdentifier(p *parser) stateFn {

	t := p.next()
	ident := t.GetVal()

	if w := p.memo.Vocab().Read(ident); w != nil {
		p.emit(w)
	} else {
		p.emit(word.NewNameWord(ident))
	}

	return parse
}