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47 lines
1.2 KiB
Nim
47 lines
1.2 KiB
Nim
#
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#
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# The Nim Compiler
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# (c) Copyright 2015 Andreas Rumpf
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#
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# See the file "copying.txt", included in this
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# distribution, for details about the copyright.
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#
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## Plugin support for the Nim compiler. Right now they
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## need to be build with the compiler, no DLL support.
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import ast, semdata, idents
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type
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Transformation* = proc (c: PContext; n: PNode): PNode {.nimcall.}
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Plugin = ref object
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fn, module, package: PIdent
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t: Transformation
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next: Plugin
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proc pluginMatches(p: Plugin; s: PSym): bool =
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if s.name.id != p.fn.id:
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return false
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let module = s.skipGenericOwner
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if module == nil or module.kind != skModule or
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module.name.id != p.module.id:
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return false
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let package = module.owner
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if package == nil or package.kind != skPackage or
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package.name.id != p.package.id:
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return false
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return true
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var head: Plugin
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proc getPlugin*(fn: PSym): Transformation =
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var it = head
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while it != nil:
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if pluginMatches(it, fn): return it.t
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it = it.next
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proc registerPlugin*(package, module, fn: string; t: Transformation) =
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let oldHead = head
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head = Plugin(fn: getIdent(fn), module: getIdent(module),
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package: getIdent(package), t: t, next: oldHead)
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