Sass mixin 递归；@include 循环 [英] Sass mixin recursion; @include loop

问题描述

有谁知道是否可以恢复 Sass 的功能，以防止为防止 @include 递归而实施的错误修复"¹?

Does anyone know if it's possible to revert Sass's functionality, to prevent the "bug-fix"¹ that was implemented to prevent @include recursion?

消息是:

语法错误:发现一个@include 循环:<mixin-name>包含自身

这在中已修复"¹3.0.5，我不想(阅读:我不能)降级那么远.不幸的是，我对 Ruby 的了解不够，无法筛选源代码，虽然我正在花时间进行更改，但现在对我没有帮助.

This was "fixed"¹ in 3.0.5, and I'd prefer not to (read: I can't) downgrade that far. I unfortunately don't know enough Ruby to go sifting through the source, and while I'm making time to change that, it doesn't help me now.

那么，是否可以²将此功能恢复到 3.0.5 之前的功能而无需降级?某处是否有重新补丁?我一直没能找到.

So, is it possible² to revert this functionality to that of pre-3.0.5 without having to downgrade; is there a re-patch floating around somewhere? I haven't been able to find one.

虽然我现在自己回答了这个问题，但我仍然愿意接受更好的答案；具体来说，更便携的解决方案，因为现在 Sass 文件将在其他任何地方(3.0.5 之前的任何地方)

While I've answered this myself now, I'm still open to better answers; specifically, more portable solutions since now the Sass files will break anywhere else (anywhere that isn't pre-3.0.5)

<子>¹ 引号用于表示我认为这不是解决方法.我认为这是一个休息；不过，我会与负责的人一起解决这个问题.
² 我知道这是可能的，但我的意思是专门针对没有 Ruby 实践经验的人.我正在学习 Ruby！

_{¹ Quotes used to indicate I don't think this is a fix. I think it is a break; I'll take that up with those responsible though.
² I know its possible, but I mean specifically for someone with no practical experience with Ruby. I'm learning Ruby!}

推荐答案

好的，有一个更简洁的方法来应用你的 hack:指南针 ">猴子补丁.

Okay, there's a cleaner way apply your hack: monkey-patching with Compass.

它可以让您安全地共享您的项目，其他人都可以在不修改他们自己的 SASS 编译器的情况下编译它.

It will let you share your project safely and everybody else will be able to compile it without modifying their own SASS compilers.

在 compass.rb 旁边创建 sass-visit-mixin-monkey-patch.rb 并从那里应用你的黑客:

Create sass-visit-mixin-monkey-patch.rb next to compass.rb and apply your hack from there:

class Sass::Tree::Visitors::Perform < Sass::Tree::Visitors::Base
  # Runs a mixin.
  def visit_mixin(node)
    #include_loop = true
    #handle_include_loop!(node) if @stack.any? {|e| e[:name] == node.name}
    include_loop = false

    @stack.push(:filename => node.filename, :line => node.line, :name => node.name)
    raise Sass::SyntaxError.new("Undefined mixin '#{node.name}'.") unless mixin = @environment.mixin(node.name)

    if node.children.any? && !mixin.has_content
      raise Sass::SyntaxError.new(%Q{Mixin "#{node.name}" does not accept a content block.})
    end

    args = node.args.map {|a| a.perform(@environment)}
    keywords = Sass::Util.map_hash(node.keywords) {|k, v| [k, v.perform(@environment)]}
    splat = node.splat.perform(@environment) if node.splat

    self.class.perform_arguments(mixin, args, keywords, splat) do |env|
      env.caller = Sass::Environment.new(@environment)
      env.content = node.children if node.has_children

      trace_node = Sass::Tree::TraceNode.from_node(node.name, node)
      with_environment(env) {trace_node.children = mixin.tree.map {|c| visit(c)}.flatten}
      trace_node
    end
  rescue Sass::SyntaxError => e
    unless include_loop
      e.modify_backtrace(:mixin => node.name, :line => node.line)
      e.add_backtrace(:line => node.line)
    end
    raise e
  ensure
    @stack.pop unless include_loop
  end
end

2)

需要 config.rb 中的猴子补丁:

# Enabling mixin recursion by applying a monkey patch to SASS compiler
require "./sass-visit-mixin-monkey-patch"

3)

使用 compass compile 编译您的项目.

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