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implement bitsize pragma for bitfields

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This commit is contained in:
Aman Gupta 2015-09-28 14:34:36 -07:00
commit 5e9ce88daf
5 changed files with 18 additions and 1 deletions
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7
compiler/pragmas.nim
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@ -56,7 +56,7 @@ const
wInheritable, wGensym, wInject, wRequiresInit, wUnchecked, wUnion, wPacked,
wBorrow, wGcSafe}
fieldPragmas* = {wImportc, wExportc, wDeprecated, wExtern,
wImportCpp, wImportObjC, wError, wGuard}
wImportCpp, wImportObjC, wError, wGuard, wBitsize}
varPragmas* = {wImportc, wExportc, wVolatile, wRegister, wThreadVar, wNodecl,
wMagic, wHeader, wDeprecated, wCompilerproc, wDynlib, wExtern,
wImportCpp, wImportObjC, wError, wNoInit, wCompileTime, wGlobal,
@ -844,6 +844,11 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: int,
if sym == nil: pragmaLockStmt(c, it)
elif sym.typ == nil: invalidPragma(it)
else: sym.typ.lockLevel = pragmaLocks(c, it)
of wBitsize:
if sym == nil or sym.kind != skField or it.kind != nkExprColonExpr:
invalidPragma(it)
else:
sym.bitsize = expectIntLit(c, it)
of wGuard:
if sym == nil or sym.kind notin {skVar, skLet, skField}:
invalidPragma(it)