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44 lines
1.5 KiB
Nim
44 lines
1.5 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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## The builtin 'system.locals' implemented as a plugin.
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import compiler/pluginsupport, compiler/ast, compiler/astalgo,
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compiler/magicsys, compiler/lookups, compiler/semdata, compiler/lowerings
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proc semLocals(c: PContext, n: PNode): PNode =
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var counter = 0
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var tupleType = newTypeS(tyTuple, c)
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result = newNodeIT(nkPar, n.info, tupleType)
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tupleType.n = newNodeI(nkRecList, n.info)
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# for now we skip openarrays ...
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for scope in walkScopes(c.currentScope):
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if scope == c.topLevelScope: break
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for it in items(scope.symbols):
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# XXX parameters' owners are wrong for generics; this caused some pain
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# for closures too; we should finally fix it.
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#if it.owner != c.p.owner: return result
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if it.kind in skLocalVars and
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it.typ.skipTypes({tyGenericInst, tyVar}).kind notin
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{tyVarargs, tyOpenArray, tyTypeDesc, tyStatic, tyExpr, tyStmt, tyEmpty}:
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var field = newSym(skField, it.name, getCurrOwner(c), n.info)
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field.typ = it.typ.skipTypes({tyGenericInst, tyVar})
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field.position = counter
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inc(counter)
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addSon(tupleType.n, newSymNode(field))
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addSonSkipIntLit(tupleType, field.typ)
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var a = newSymNode(it, result.info)
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if it.typ.skipTypes({tyGenericInst}).kind == tyVar: a = newDeref(a)
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result.add(a)
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registerPlugin("stdlib", "system", "locals", semLocals)
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