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borrow works with generics

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This commit is contained in:
Araq 2012-08-06 18:11:03 +02:00
commit ce23b814a0
6 changed files with 79 additions and 42 deletions
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14
compiler/semcall.nim
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@ -150,3 +150,17 @@ proc explicitGenericInstantiation(c: PContext, n: PNode, s: PSym): PNode =
else:
result = explicitGenericInstError(n)
proc SearchForBorrowProc(c: PContext, fn: PSym, tos: int): PSym =
# Searchs for the fn in the symbol table. If the parameter lists are suitable
# for borrowing the sym in the symbol table is returned, else nil.
# New approach: generate fn(x, y, z) where x, y, z have the proper types
# and use the overloading resolution mechanism:
var call = newNode(nkCall)
call.add(newIdentNode(fn.name, fn.info))
for i in 1.. <fn.typ.n.len:
let param = fn.typ.n.sons[i]
let t = skipTypes(param.typ, abstractVar)
call.add(newNodeIT(nkEmpty, fn.info, t.baseOfDistinct))
var resolved = semOverloadedCall(c, call, call, {fn.kind})
if resolved != nil:
result = resolved.sons[0].sym