yosssi/gcss/element.go

package gcss

import "io"

// element represents an element of GCSS source codes.
type element interface {
        io.WriterTo
        AppendChild(child element)
        Base() *elementBase
        SetContext(*context)
        Context() *context
}

// newElement creates and returns an element.
func newElement(ln *line, parent element) (element, error) {
        var e element
        var err error

        switch {
        case ln.isComment():
                e = newComment(ln, parent)
        case ln.isAtRule():
                e = newAtRule(ln, parent)
        case ln.isMixinDeclaration():
                // error can be ignored becuase the line is checked beforehand
                // by calling `ln.isMixinDeclaration()`.
                e, _ = newMixinDeclaration(ln, parent)
        case ln.isMixinInvocation():
                // error can be ignored becuase the line is checked beforehand
                // by calling `ln.isMixinInvocation()`.
                e, _ = newMixinInvocation(ln, parent)
        case ln.isVariable():
                e, err = newVariable(ln, parent)
        case ln.isDeclaration():
                e, err = newDeclaration(ln, parent)
        default:
                e, err = newSelector(ln, parent)
        }

        return e, err
}
1	yakumo_izuru	1.1	package gcss
2
3			import "io"
4
5			// element represents an element of GCSS source codes.
6			type element interface {
7			io.WriterTo
8			AppendChild(child element)
9			Base() *elementBase
10			SetContext(*context)
11			Context() *context
12			}
13
14			// newElement creates and returns an element.
15			func newElement(ln *line, parent element) (element, error) {
16			var e element
17			var err error
18
19			switch {
20			case ln.isComment():
21			e = newComment(ln, parent)
22			case ln.isAtRule():
23			e = newAtRule(ln, parent)
24			case ln.isMixinDeclaration():
25			// error can be ignored becuase the line is checked beforehand
26			// by calling `ln.isMixinDeclaration()`.
27			e, _ = newMixinDeclaration(ln, parent)
28			case ln.isMixinInvocation():
29			// error can be ignored becuase the line is checked beforehand
30			// by calling `ln.isMixinInvocation()`.
31			e, _ = newMixinInvocation(ln, parent)
32			case ln.isVariable():
33			e, err = newVariable(ln, parent)
34			case ln.isDeclaration():
35			e, err = newDeclaration(ln, parent)
36			default:
37			e, err = newSelector(ln, parent)
38			}
39
40			return e, err
41			}
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