101 lines
1.4 KiB
Go
101 lines
1.4 KiB
Go
package crushmap
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import (
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"errors"
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"fmt"
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"strconv"
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)
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func tunableState(l *lex) stateFn {
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l.lexIgnore()
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if r := l.lexPeek(); r != ' ' {
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l.lexErr(fmt.Sprintf("unexpected token %q", r))
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return l.lexPop()
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}
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l.lexEmit(itemTunableBeg)
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return tunableKeyState
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}
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func tunableKeyState(l *lex) stateFn {
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l.lexTake(" \t")
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l.lexIgnore()
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loop:
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for {
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r := l.lexPeek()
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switch r {
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case '\n', '#':
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l.lexErr(fmt.Sprintf("unexpected token %q", r))
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return l.lexPop()
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case ' ':
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break loop
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default:
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l.lexNext()
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}
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}
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l.lexEmit(itemTunableKey)
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return tunableValState
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}
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func tunableValState(l *lex) stateFn {
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l.lexTake(" \t")
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l.lexIgnore()
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loop:
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for {
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r := l.lexPeek()
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switch r {
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case '\n', '#', ' ':
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break loop
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default:
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l.lexNext()
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}
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}
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l.lexEmit(itemTunableVal)
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l.lexEmit(itemTunableEnd)
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return l.lexPop()
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}
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func (p *textParser) handleTunable() (string, interface{}, error) {
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var key string
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var val interface{}
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Loop:
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for {
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tok, done := p.l.lexNextToken()
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if done {
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break Loop
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}
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switch tok.itype {
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case itemEOF, itemTunableEnd:
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break Loop
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case itemComment:
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continue
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case itemTunableKey:
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key = tok.ivalue
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case itemTunableVal:
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id, err := strconv.Atoi(tok.ivalue)
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if err != nil {
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val = tok.ivalue
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} else {
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val = id
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}
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}
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}
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if key == "" {
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return "", nil, errors.New("invalid tunable")
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}
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return key, val, nil
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}
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