英文:
How to print Nim's AST at runtime?
问题
dumpTree 和类似的宏在编译时打印出 Nim 的 AST。我想知道如何在 运行时 打印相同的内容。用例是能够捕获输出以在 nimib 文档中记录它。
具体示例如下：
import macros
dumpTree:
25 ⬇️
10 ➖
在编译时产生以下输出：
StmtList
Command
IntLit 25
Ident ""⬇️""
Command
IntLit 10
Ident ""➖""
我想要一个 dumpTreeRuntime，对于上述情况等效于：
echo """"
StmtList
Command
IntLit 25
Ident ""⬇️""
Command
IntLit 10
Ident ""➖""
""""
英文:
dumpTree and similar macros print Nim's AST at compile time. I was wondering how to print the same content at runtime. The use case is to be able to capture the output to document it in a nimib document.
To have a concrete example:
import macros
dumpTree:
25 ⬇️
10 ➖
produces at compile time:
StmtList
Command
IntLit 25
Ident "⬇️"
Command
IntLit 10
Ident "➖"
I would like a dumpTreeRuntime that is equivalent for the above case to:
echo """
StmtList
Command
IntLit 25
Ident "⬇️"
Command
IntLit 10
Ident "➖"
"""
答案1
得分: 4
import macros
macro treeToString(code: untyped): untyped =
return newLit(treeRepr(code))
when isMainModule:
let x = treeToString:
25 ⬇️
10 ➖
echo(x)
英文:
import macros
macro treeToString(code: untyped): untyped =
return newLit(treeRepr(code))
when isMainModule:
let x = treeToString:
25 ⬇️
10 ➖
echo(x)
</details>
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