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package pkglint
import "strings"
// Paragraph is a slice of Makefile lines that is surrounded by empty lines.
//
// All variable assignments in a paragraph should be aligned in the same column.
type Paragraph struct {
mklines *MkLines
from int
to int
}
func NewParagraph(mklines *MkLines, from, to int) *Paragraph {
for i := from; i < to; i++ {
assert(!mklines.mklines[i].IsEmpty())
}
return &Paragraph{mklines, from, to}
}
func (p *Paragraph) FirstLine() *MkLine { return p.mklines.mklines[p.from] }
func (p *Paragraph) LastLine() *MkLine { return p.mklines.mklines[p.to-1] }
func (p *Paragraph) MkLines() []*MkLine { return p.mklines.mklines[p.from:p.to] }
func (p *Paragraph) ForEach(action func(mkline *MkLine)) {
for _, mkline := range p.MkLines() {
action(mkline)
}
}
func (p *Paragraph) Align() {
var align VaralignBlock
p.ForEach(align.Process)
align.Finish()
}
// AlignTo realigns all variable assignments in the paragraph so that their
// values start in the same column. Variable assignments that are commented
// out are also realigned.
//
// No warning or note is logged. Therefore this method must only be used to
// realign the whole paragraph after one of its lines has been modified.
func (p *Paragraph) AlignTo(column int) {
p.ForEach(func(mkline *MkLine) {
if !mkline.IsVarassign() {
return
}
align := mkline.ValueAlign()
oldWidth := tabWidth(align)
if tabWidth(rtrimHspace(align)) > column {
return
}
if oldWidth == column && !hasSuffix(strings.TrimRight(align, "\t"), " ") {
return
}
if mkline.IsMultiline() && !mkline.FirstLineContainsValue() {
return
}
trimmed := rtrimHspace(align)
newSpace := alignmentAfter(trimmed, column)
fix := mkline.Autofix()
fix.Notef(SilentAutofixFormat)
fix.ReplaceAfter(trimmed, align[len(trimmed):], newSpace)
fix.Apply()
})
}
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