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comply/vendor/github.com/yosssi/ace/helper_method_conditional_comment.go

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2018-05-15 21:13:11 +00:00
package ace
import (
"bytes"
"fmt"
"io"
"strings"
)
// Comment types
const (
commentTypeHidden = "hidden"
commentTypeRevealed = "revealed"
)
// helperMethodConditionalComment represents a helper method
// conditional comment.
type helperMethodConditionalComment struct {
elementBase
commentType string
condition string
}
// WriteTo writes data to w.
func (e *helperMethodConditionalComment) WriteTo(w io.Writer) (int64, error) {
var bf bytes.Buffer
// Write an open tag.
bf.WriteString(e.opts.DelimLeft)
bf.WriteString(preDefinedFuncNameHTML)
bf.WriteString(space)
bf.WriteString(doubleQuote)
bf.WriteString(lt)
bf.WriteString(exclamation)
bf.WriteString(doubleQuote)
bf.WriteString(e.opts.DelimRight)
if e.commentType == commentTypeHidden {
bf.WriteString(hyphen)
bf.WriteString(hyphen)
}
bf.WriteString(bracketOpen)
bf.WriteString("if ")
bf.WriteString(e.condition)
bf.WriteString(bracketClose)
bf.WriteString(gt)
bf.WriteString(lf)
// Write the children's HTML.
if i, err := e.writeChildren(&bf); err != nil {
return i, err
}
// Write a close tag.
bf.WriteString(e.opts.DelimLeft)
bf.WriteString(preDefinedFuncNameHTML)
bf.WriteString(space)
bf.WriteString(doubleQuote)
bf.WriteString(lt)
bf.WriteString(exclamation)
bf.WriteString(doubleQuote)
bf.WriteString(e.opts.DelimRight)
bf.WriteString(bracketOpen)
bf.WriteString("endif")
bf.WriteString(bracketClose)
if e.commentType == commentTypeHidden {
bf.WriteString(hyphen)
bf.WriteString(hyphen)
}
bf.WriteString(gt)
// Write the buffer.
i, err := w.Write(bf.Bytes())
return int64(i), err
}
// ContainPlainText returns true.
func (e *helperMethodConditionalComment) ContainPlainText() bool {
return true
}
// newHelperMethodConditionalComment creates and returns an HTML comment.
func newHelperMethodConditionalComment(ln *line, rslt *result, src *source, parent element, opts *Options) (*helperMethodConditionalComment, error) {
switch len(ln.tokens) {
case 2:
return nil, fmt.Errorf("no comment type is specified [file: %s][line: %d]", ln.fileName(), ln.no)
case 3:
return nil, fmt.Errorf("no condition is specified [file: %s][line: %d]", ln.fileName(), ln.no)
}
commentType := ln.tokens[2]
if commentType != commentTypeHidden && commentType != commentTypeRevealed {
return nil, fmt.Errorf("the comment type is invalid [file: %s][line: %d]", ln.fileName(), ln.no)
}
e := &helperMethodConditionalComment{
elementBase: newElementBase(ln, rslt, src, parent, opts),
commentType: commentType,
condition: strings.Join(ln.tokens[3:], space),
}
return e, nil
}