Inline breakpoints
还没有人认领这个 Issue。
评估
- 难度
- 5/5
- 预计耗时
- 一周以上
- 新手友好度
- 25/100
- Issue 类型
- 功能
- 描述清晰度
- 基本清楚
- 活跃度
- 停滞
- 技术栈
- clojure, javascript
调研方向
首先跟踪从 gutter 选择到 source-map 处理的 inline-breakpoint 检测流程，重点关注多行 ClojureScript form 及其生成的 JavaScript。完成的标准是：可能的 breakpoint 覆盖整个已映射的 form，并在 DevTools UI 中正确呈现。
由索引模型根据 Issue 内容生成。
描述
DevTools have this[1] new cool feature called "inline breakpoints".
Unfortunately it is implemented in a way which does not work well with source-mapped clojurescript-generated javascript code. I'm not sure where exactly their code fails but from brief review of the code it looks like they assume lines are fundamental code blocks for scanning for possible breakpoints. While this is true in javascript, it is not the case in clojurescript-generated javascript code. Typically one form in clojurescript code can span multiple lines and compiles into many more lines of javascript. Detection of possible breakpoints examines only first line (or first few lines) of generated javascript code which is usually not sufficient. There may be also some woes caused by source-mapping.
We should examine possibility of fixing this. I believe all low-level tools are available, we just need to scan whole raw source code generated for selected form. For example placing a breakpoint into gutter at some line, we should detect outer-most cljs form beginning on that line, properly find its end possibly many lines down from it. Then map both to raw javascript locations to get proper range for possible breakpoints scan. Then we must make sure that detected possible breakpoints are properly presented in the UI.
- 主要语言
- Clojure
- 星标
- 775
- 派生
- 29
- PR 合并指标
- 30 天内没有已合并 PR
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