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progress with futures

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This commit is contained in:
Araq 2014-05-23 08:57:16 +02:00
commit d2dbcf2fa4
8 changed files with 68 additions and 36 deletions
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12
compiler/semexprs.nim
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@ -1579,6 +1579,12 @@ proc semShallowCopy(c: PContext, n: PNode, flags: TExprFlags): PNode =
else:
result = semDirectOp(c, n, flags)
proc createFuture(c: PContext; t: PType; info: TLineInfo): PType =
result = newType(tyGenericInvokation, c.module)
addSonSkipIntLit(result, magicsys.getCompilerProc("Future").typ)
addSonSkipIntLit(result, t)
result = instGenericContainer(c, info, result, allowMetaTypes = false)
proc setMs(n: PNode, s: PSym): PNode =
result = n
n.sons[0] = newSymNode(s)
@ -1610,6 +1616,12 @@ proc semMagic(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
var x = n.lastSon
if x.kind == nkDo: x = x.sons[bodyPos]
result.sons[1] = semStmt(c, x)
of mSpawn:
result = setMs(n, s)
result.sons[1] = semExpr(c, n.sons[1])
# later passes may transform the type 'Future[T]' back into 'T'
if not result[1].typ.isEmptyType:
result.typ = createFuture(c, result[1].typ, n.info)
else: result = semDirectOp(c, n, flags)
proc semWhen(c: PContext, n: PNode, semCheck = true): PNode =