Method expression

parse.go:712–719

(context, as string)

}

func (t *Template) expression(context, as string) Expression {
	expr, tk := t.parseExpression(context)
	if expr == nil {
		t.unexpected(tk, context, as)
	}
	t.backup()
	return expr
}

func (t *Template) pipeline(context string, baseExprMutate Expression) (pipe *PipeNode) {
	pos := t.peekNonSpace().pos