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better overloading capabilities for 'shallowCopy'; little bugfix for 'system.compiles'

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This commit is contained in:
Araq 2012-07-29 10:30:35 +02:00
commit 8c62903429
2 changed files with 15 additions and 12 deletions
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25
compiler/semexprs.nim
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@ -1137,8 +1137,8 @@ proc semCompiles(c: PContext, n: PNode, flags: TExprFlags): PNode =
msgs.gErrorMax = high(int)
# open a scope for temporary symbol inclusions:
openScope(c.tab)
let oldTos = c.tab.tos
openScope(c.tab)
let oldOwnerLen = len(gOwners)
let oldGenerics = c.generics
let oldContextLen = msgs.getInfoContextLen()
@ -1153,7 +1153,6 @@ proc semCompiles(c: PContext, n: PNode, flags: TExprFlags): PNode =
except ERecoverableError:
nil
# undo symbol table changes (as far as it's possible):
closeScope(c.tab)
c.generics = oldGenerics
c.InGenericContext = oldInGenericContext
c.InUnrolledContext = oldInUnrolledContext
@ -1165,6 +1164,17 @@ proc semCompiles(c: PContext, n: PNode, flags: TExprFlags): PNode =
msgs.gErrorCounter = oldErrorCount
msgs.gErrorMax = oldErrorMax
proc semShallowCopy(c: PContext, n: PNode, flags: TExprFlags): PNode =
if sonsLen(n) == 3:
# XXX ugh this is really a hack: shallowCopy() can be overloaded only
# with procs that take not 2 parameters:
result = newNodeI(nkFastAsgn, n.info)
result.add(n[1])
result.add(n[2])
result = semAsgn(c, result)
else:
result = semDirectOp(c, n, flags)
proc semMagic(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
# this is a hotspot in the compiler!
result = n
@ -1178,16 +1188,7 @@ proc semMagic(c: PContext, n: PNode, s: PSym, flags: TExprFlags): PNode =
of mIs: result = semIs(c, setMs(n, s))
of mOf: result = semOf(c, setMs(n, s))
of mEcho: result = semEcho(c, setMs(n, s))
of mShallowCopy:
if sonsLen(n) == 3:
# XXX ugh this is really a hack: shallowCopy() can be overloaded only
# with procs that take not 2 parameters:
result = newNodeI(nkFastAsgn, n.info)
result.add(n[1])
result.add(n[2])
result = semAsgn(c, result)
else:
result = semDirectOp(c, n, flags)
of mShallowCopy: result = semShallowCopy(c, n, flags)
of mExpandToAst: result = semExpandToAst(c, n, s, flags)
else: result = semDirectOp(c, n, flags)