Esempio n. 1
0
// New allocates a new HTML template with the given name.
func New(name string) *Template {
	tmpl := &Template{
		nil,
		template.New(name),
		nil,
		&nameSpace{
			set: make(map[string]*Template),
		},
	}
	tmpl.set[name] = tmpl
	return tmpl
}
Esempio n. 2
0
// escapeTree escapes the named template starting in the given context as
// necessary and returns its output context.
func (e *escaper) escapeTree(c context, node parse.Node, name string, line int) (context, string) {
	// Mangle the template name with the input context to produce a reliable
	// identifier.
	dname := c.mangle(name)
	e.called[dname] = true
	if out, ok := e.output[dname]; ok {
		// Already escaped.
		return out, dname
	}
	t := e.template(name)
	if t == nil {
		// Two cases: The template exists but is empty, or has never been mentioned at
		// all. Distinguish the cases in the error messages.
		if e.tmpl.set[name] != nil {
			return context{
				state: stateError,
				err:   errorf(ErrNoSuchTemplate, node, line, "%q is an incomplete or empty template", name),
			}, dname
		}
		return context{
			state: stateError,
			err:   errorf(ErrNoSuchTemplate, node, line, "no such template %q", name),
		}, dname
	}
	if dname != name {
		// Use any template derived during an earlier call to escapeTemplate
		// with different top level templates, or clone if necessary.
		dt := e.template(dname)
		if dt == nil {
			dt = template.New(dname)
			dt.Tree = &parse.Tree{Name: dname, Root: t.Root.CopyList()}
			e.derived[dname] = dt
		}
		t = dt
	}
	return e.computeOutCtx(c, t), dname
}