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sizeof alignof offsetof macros api (#10855)

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Arne Döring 2019-03-19 08:23:00 +01:00 • committed by Andreas Rumpf
commit 188870648a
7 changed files with 93 additions and 1 deletions
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21
compiler/vm.nim
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@ -1477,6 +1477,27 @@ proc rawExecute(c: PCtx, start: int, tos: PStackFrame): TFullReg =
regs[ra].node = opMapTypeImplToAst(c.cache, regs[rb].node.sym.typ, c.debug[pc])
else:
stackTrace(c, tos, pc, "node has no type")
of opcNGetSize:
decodeBImm(rkInt)
let n = regs[rb].node
case imm
of 0: # size
if n.typ == nil:
stackTrace(c, tos, pc, "node has no type")
else:
regs[ra].intVal = getSize(c.config, n.typ)
of 1: # align
if n.typ == nil:
stackTrace(c, tos, pc, "node has no type")
else:
regs[ra].intVal = getAlign(c.config, n.typ)
else: # offset
if n.kind != nkSym:
stackTrace(c, tos, pc, "node is not a symbol")
elif n.sym.kind != skField:
stackTrace(c, tos, pc, "symbol is not a field (nskField)")
else:
regs[ra].intVal = n.sym.offset
of opcNStrVal:
decodeB(rkNode)
createStr regs[ra]