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- fixed: Type determination of multi-dimensional arrays failed, apparently because ZCCCompiler::Simplify is too broken to leave the node's ring list intact. 

Instead of trying to fix Simplify, which seems to be a lost cause, the ring list now gets unraveled into an array which is immune from this type of problem.
This commit is contained in:
Christoph Oelckers 2016-12-09 23:00:34 +01:00
parent b17bd65279
commit 902a4b839c
1 changed files with 12 additions and 6 deletions
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18
src/scripting/zscript/zcc_compile.cpp
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@ -1583,12 +1583,19 @@ PType *ZCCCompiler::ResolveUserType(ZCC_BasicType *type, PSymbolTable *symt)
PType *ZCCCompiler::ResolveArraySize(PType *baseType, ZCC_Expression *arraysize, PSymbolTable *sym)
{
// The duplicate Simplify call is necessary because if the head node gets replaced there is no way to detect the end of the list otherwise.
arraysize = Simplify(arraysize, sym, true);
ZCC_Expression *val;
TArray<ZCC_Expression *> indices;
// Simplify is too broken to resolve this inside the ring list so unravel the list into an array before starting to simplify its components.
auto node = arraysize;
do
{
val = Simplify(arraysize, sym, true);
indices.Push(node);
node = static_cast<ZCC_Expression*>(node->SiblingNext);
} while (node != arraysize);
for (auto node : indices)
{
auto val = Simplify(node, sym, true);
if (val->Operation != PEX_ConstValue || !val->Type->IsA(RUNTIME_CLASS(PInt)))
{
Error(arraysize, "Array index must be an integer constant");
@ -1601,8 +1608,7 @@ PType *ZCCCompiler::ResolveArraySize(PType *baseType, ZCC_Expression *arraysize,
return TypeError;
}
baseType = NewArray(baseType, size);
val = static_cast<ZCC_Expression *>(val->SiblingNext);
} while (val != arraysize);
}
return baseType;
}