// Creates an assign tag
func CaptureFactory(p *core.Parser, config *core.Configuration) (core.Tag, error) {
name := p.ReadName()
if len(name) == 0 {
return nil, p.Error("Invalid assignment, variable not found. ")
}
p.SkipPastTag()
return &Capture{name, config, NewCommon()}, nil
}
func ForFactory(p *core.Parser, config *core.Configuration) (core.Tag, error) {
name := p.ReadName()
if len(name) == 0 {
return nil, p.Error("Invalid variable name in for tag")
}
if p.SkipSpaces() != 'i' || p.Left() < 3 || p.Data[p.Position+1] != 'n' || !core.IsTokenEnd(p.Data[p.Position+2]) {
return nil, p.Error("Expecting keyword 'in' after variable name in for tag")
}
p.ForwardBy(2)
value, err := p.ReadValue()
if err != nil {
return nil, err
}
f := &For{
Common: NewCommon(),
name: name,
keyName: name + "[0]",
valueName: name + "[1]",
value: value,
}
for {
name := p.ReadName()
if name == "" {
break
}
if name == "limit" {
if p.SkipUntil(':') != ':' {
return nil, p.Error("Expecting ':' after limit in for tag")
}
p.Forward()
limit, err := p.ReadValue()
if err != nil {
return nil, err
}
f.limit = limit
} else if name == "offset" {
if p.SkipUntil(':') != ':' {
return nil, p.Error("Expecting ':' after offset in for tag")
}
p.Forward()
offset, err := p.ReadValue()
if err != nil {
return nil, err
}
f.offset = offset
} else if name == "reverse" {
f.reverse = true
} else {
return nil, p.Error(fmt.Sprint("%q is an inknown modifier in for tag", name))
}
}
p.SkipPastTag()
return f, nil
}
func newTag(p *core.Parser, config *core.Configuration) (core.Tag, error) {
p.ForwardBy(2) // skip the {%
name := p.ReadName()
factory, ok := Tags[name]
if ok == false {
return nil, p.Error(fmt.Sprintf("unknown tag %q", name))
}
return factory(p, config)
}
// Creates an assign tag
func AssignFactory(p *core.Parser, config *core.Configuration) (core.Tag, error) {
name := p.ReadName()
if len(name) == 0 {
return nil, p.Error("Invalid variable name in assign tag")
}
if p.SkipUntil('=') != '=' {
return nil, p.Error("Invalid assign, missing '=' ")
}
p.Forward()
value, err := p.ReadValue()
if err != nil {
return nil, err
}
filters, err := p.ReadFilters()
if err != nil {
return nil, err
}
p.SkipPastTag()
return &Assign{name, value, filters}, nil
}
// Special handling to just quickly skip over it all
func RawFactory(p *core.Parser, config *core.Configuration) (core.Tag, error) {
p.SkipPastTag()
start := p.Position
end := start
for {
_, markupType := p.ToMarkup(false)
if markupType == core.TagMarkup {
//tentative end is before the start of the endraw tag
end = p.Position
p.ForwardBy(2) // skip {%
if name := p.ReadName(); name == "endraw" {
p.SkipPastTag()
break
}
} else if markupType == core.OutputMarkup {
p.ForwardBy(2) // skip it
} else {
break
}
}
return &Raw{p.Data[start:end]}, nil
}
// Special handling to just quickly skip over it all
func CommentFactory(p *core.Parser, config *core.Configuration) (core.Tag, error) {
openTags := 1
for {
_, markupType := p.ToMarkup(false)
if markupType == core.TagMarkup {
p.ForwardBy(2) // skip {%
if name := p.ReadName(); name == "comment" {
openTags++
} else if name == "endcomment" {
openTags--
if openTags == 0 {
p.SkipPastTag()
break
}
}
} else if markupType == core.OutputMarkup {
p.SkipPastTag()
} else {
break
}
}
return comment, nil
}
