使用生成类型提供程序创建多个根类型 [英] Creating more than one root type with generative type provider

问题描述

生成类型提供程序似乎存在多个根类型的问题. 完整的repro可以在这里找到: https://gist.github.com/dsevastianov/46d1a8495c4af46a9875 .以下示例

Generative type providers seem to have an issue with having more than one root type. Complete repro is available here: https://gist.github.com/dsevastianov/46d1a8495c4af46a9875. Following example

#r @"SampleProvider.dll"
type Birch = Sample.Sample<"birch">
type Elm = Sample.Sample<"elm">

let birch = Birch.birch()
let elm = Elm.elm()
elm.Branches <- ([|Elm.elm()|])

在编译时(而不是在设计时)失败:

fails at compile time (not at design time):

FSC: error FS2014: A problem occurred writing the binary 'obj\Debug\Tests.dll': 
Error in pass3 for type Schema, error: Error in GetMethodRefAsMethodDefIdx for 
mref = (".ctor", "ZipLookup"), error: Exception of type Microsoft.FSharp.Compiler.AbstractIL.ILBinaryWriter+MethodDefNotFound' was thrown.

推荐答案

事实证明，有必要为每种根类型创建单独的临时程​​序集.我修改了Gist以反映解决方案: https://gist.github.com/dsevastianov/46d1a8495c4af46a9875

Turns out that it is necessary to create separate temp assembly for each root type. I amended Gist to reflect the solution: https://gist.github.com/dsevastianov/46d1a8495c4af46a9875

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