- no more Simplify for global constants as well.

src/dobjtype.h

@@ -1043,7 +1043,7 @@ class PSymbolConstString : public PSymbolConst
 public:
 	FString Str;
 
-	PSymbolConstString(FName name, FString &str) : PSymbolConst(name, TypeString), Str(str) {}
+	PSymbolConstString(FName name, const FString &str) : PSymbolConst(name, TypeString), Str(str) {}
 	PSymbolConstString() {}
 };
 

src/sc_man.cpp

@@ -1008,6 +1008,7 @@ void FScanner::CheckOpen()
 int FScriptPosition::ErrorCounter;
 int FScriptPosition::WarnCounter;
 bool FScriptPosition::StrictErrors;	// makes all OPTERROR messages real errors.
+bool FScriptPosition::errorout;		// call I_Error instead of printing the error itself.
 
 FScriptPosition::FScriptPosition(const FScriptPosition &other)
 {

src/sc_man.h

@@ -144,9 +144,9 @@ struct FScriptPosition
 	static int WarnCounter;
 	static int ErrorCounter;
 	static bool StrictErrors;
+	static bool errorout;
 	FString FileName;
 	int ScriptLine;
-	bool errorout = false;
 
 	FScriptPosition()
 	{

src/scripting/codegeneration/codegen.cpp

@@ -5829,7 +5829,7 @@ FxExpression *FxIdentifier::ResolveMember(FCompileContext &ctx, PStruct *classct
 		return x->Resolve(ctx);
 	}
 
-	if ((sym = objtype->Symbols.FindSymbolInTable(Identifier, symtbl)) != nullptr)
+	if (objtype != nullptr && (sym = objtype->Symbols.FindSymbolInTable(Identifier, symtbl)) != nullptr)
 	{
 		if (sym->IsKindOf(RUNTIME_CLASS(PSymbolConst)))
 		{
@@ -7168,7 +7168,6 @@ static bool CheckArgSize(FName fname, FArgumentList &args, int min, int max, FSc
 
 FxExpression *FxFunctionCall::Resolve(FCompileContext& ctx)
 {
-	ABORT(ctx.Class);
 	bool error = false;
 
 	for (auto a : ArgList)
@@ -7181,6 +7180,8 @@ FxExpression *FxFunctionCall::Resolve(FCompileContext& ctx)
 		}
 	}
 
+	if (ctx.Class != nullptr)
+	{
 		PFunction *afd = FindClassMemberFunction(ctx.Class, ctx.Class, MethodName, ScriptPosition, &error);
 
 		if (afd != nullptr)
@@ -7203,6 +7204,7 @@ FxExpression *FxFunctionCall::Resolve(FCompileContext& ctx)
 			delete this;
 			return x->Resolve(ctx);
 		}
+	}
 
 	for (size_t i = 0; i < countof(FxFlops); ++i)
 	{
@@ -7228,7 +7230,7 @@ FxExpression *FxFunctionCall::Resolve(FCompileContext& ctx)
 	if (special != 0 && min >= 0)
 	{
 		int paramcount = ArgList.Size();
-		if (ctx.Function == nullptr)
+		if (ctx.Function == nullptr || ctx.Class == nullptr)
 		{
 			ScriptPosition.Message(MSG_ERROR, "Unable to call action special %s from constant declaration", MethodName.GetChars());
 			delete this;
@@ -7459,13 +7461,20 @@ FxMemberFunctionCall::~FxMemberFunctionCall()
 
 FxExpression *FxMemberFunctionCall::Resolve(FCompileContext& ctx)
 {
-	ABORT(ctx.Class);
 	PStruct *cls;
 	bool staticonly = false;
 	bool novirtual = false;
 
 	PStruct *ccls = nullptr;
 
+	if (ctx.Class == nullptr)
+	{
+		// There's no way that a member function call can resolve to a constant so abort right away.
+		ScriptPosition.Message(MSG_ERROR, "Expression is not constant.");
+		delete this;
+		return nullptr;
+	}
+
 	for (auto a : ArgList)
 	{
 		if (a == nullptr)

src/scripting/zscript/zcc_compile.cpp

@@ -48,7 +48,6 @@
 #include "p_lnspec.h"
 #include "i_system.h"
 #include "gdtoa.h"
-#include "codegeneration/codegen.h"
 #include "vmbuilder.h"
 #include "version.h"
 
@@ -642,11 +641,11 @@ void ZCCCompiler::CreateClassTypes()
 //
 //==========================================================================
 
-void ZCCCompiler::CopyConstants(TArray<ZCC_ConstantWork> &dest, TArray<ZCC_ConstantDef*> &Constants, PSymbolTable *ot)
+void ZCCCompiler::CopyConstants(TArray<ZCC_ConstantWork> &dest, TArray<ZCC_ConstantDef*> &Constants, PStruct *cls, PSymbolTable *ot)
 {
 	for (auto c : Constants)
 	{
-		dest.Push({ c, ot });
+		dest.Push({ c, cls, ot });
 	}
 }
 
@@ -665,14 +664,14 @@ void ZCCCompiler::CompileAllConstants()
 	// put all constants in one list to make resolving this easier.
 	TArray<ZCC_ConstantWork> constantwork;
 
-	CopyConstants(constantwork, Constants, OutputSymbols);
+	CopyConstants(constantwork, Constants, nullptr, OutputSymbols);
 	for (auto c : Classes)
 	{
-		CopyConstants(constantwork, c->Constants, &c->Type()->Symbols);
+		CopyConstants(constantwork, c->Constants, c->Type(), &c->Type()->Symbols);
 	}
 	for (auto s : Structs)
 	{
-		CopyConstants(constantwork, s->Constants, &s->Type()->Symbols);
+		CopyConstants(constantwork, s->Constants, s->Type(), &s->Type()->Symbols);
 	}
 
 	// Before starting to resolve the list, let's create symbols for all already resolved ones first (i.e. all literal constants), to reduce work.
@@ -693,7 +692,7 @@ void ZCCCompiler::CompileAllConstants()
 		donesomething = false;
 		for (unsigned i = 0; i < constantwork.Size(); i++)
 		{
-			if (CompileConstant(constantwork[i].node, constantwork[i].outputtable))
+			if (CompileConstant(&constantwork[i]))
 			{
 				AddConstant(constantwork[i]);
 				// Remove the constant from the list
@@ -721,6 +720,9 @@ void ZCCCompiler::AddConstant(ZCC_ConstantWork &constant)
 {
 	auto def = constant.node;
 	auto val = def->Value;
+	ExpVal &c = constant.constval;
+	
+	// This is for literal constants.
 	if (val->NodeType == AST_ExprConstant)
 	{
 		ZCC_ExprConstant *cval = static_cast<ZCC_ExprConstant *>(val);
@@ -747,14 +749,40 @@ void ZCCCompiler::AddConstant(ZCC_ConstantWork &constant)
 			Error(def->Value, "Bad type for constant definiton");
 			def->Symbol = nullptr;
 		}
+	}
+	else
+	{
+		if (c.Type == TypeString)
+		{
+			def->Symbol = new PSymbolConstString(def->NodeName, c.GetString());
+		}
+		else if (c.Type->IsA(RUNTIME_CLASS(PInt)))
+		{
+			// How do we get an Enum type in here without screwing everything up???
+			//auto type = def->Type != nullptr ? def->Type : cval->Type;
+			def->Symbol = new PSymbolConstNumeric(def->NodeName, c.Type, c.GetInt());
+		}
+		else if (c.Type->IsA(RUNTIME_CLASS(PFloat)))
+		{
+			if (def->Type != nullptr)
+			{
+				Error(def, "Enum members must be integer values");
+			}
+			def->Symbol = new PSymbolConstNumeric(def->NodeName, c.Type, c.GetFloat());
+		}
+		else
+		{
+			Error(def->Value, "Bad type for constant definiton");
+			def->Symbol = nullptr;
+		}
+	}
 
 	if (def->Symbol == nullptr)
 	{
 		// Create a dummy constant so we don't make any undefined value warnings.
 		def->Symbol = new PSymbolConstNumeric(def->NodeName, TypeError, 0);
 	}
-		constant.outputtable->ReplaceSymbol(def->Symbol);
+	constant.Outputtable->ReplaceSymbol(def->Symbol);
-	}
 }
 
 //==========================================================================
@@ -766,13 +794,31 @@ void ZCCCompiler::AddConstant(ZCC_ConstantWork &constant)
 //
 //==========================================================================
 
-bool ZCCCompiler::CompileConstant(ZCC_ConstantDef *def, PSymbolTable *sym)
+bool ZCCCompiler::CompileConstant(ZCC_ConstantWork *work)
 {
-	assert(def->Symbol == nullptr);
+	FCompileContext ctx(work->cls, false);
-
+	FxExpression *exp = ConvertNode(work->node->Value);
-	ZCC_Expression *val = Simplify(def->Value, sym, true);
+	try
-	def->Value = val;
+	{
-	return (val->NodeType == AST_ExprConstant);
+		FScriptPosition::errorout = true;
+		exp = exp->Resolve(ctx);
+		if (exp == nullptr) return false;
+		FScriptPosition::errorout = false;
+		if (!exp->isConstant())
+		{
+			delete exp;
+			return false;
+		}
+		work->constval = static_cast<FxConstant*>(exp)->GetValue();
+		delete exp;
+		return true;
+	}
+	catch (...)
+	{
+		// eat the reported error and treat this as a temorary failure. All unresolved contants will be reported at the end.
+		FScriptPosition::errorout = false;
+		return false;
+	}
 }
 
 

src/scripting/zscript/zcc_compile.h

@@ -2,6 +2,7 @@
 #define ZCC_COMPILE_H
 
 #include <memory>
+#include "codegeneration/codegen.h"
 
 struct Baggage;
 struct FPropertyInfo;
@@ -77,7 +78,9 @@ struct ZCC_PropertyWork
 struct ZCC_ConstantWork
 {
 	ZCC_ConstantDef *node;
-	PSymbolTable *outputtable;
+	PStruct *cls;
+	PSymbolTable *Outputtable;
+	ExpVal constval;
 };
 
 class ZCCCompiler
@@ -93,10 +96,10 @@ private:
 	void ProcessStruct(ZCC_Struct *node, PSymbolTreeNode *tnode, ZCC_Class *outer);
 	void CreateStructTypes();
 	void CreateClassTypes();
-	void CopyConstants(TArray<ZCC_ConstantWork> &dest, TArray<ZCC_ConstantDef*> &Constants, PSymbolTable *ot);
+	void CopyConstants(TArray<ZCC_ConstantWork> &dest, TArray<ZCC_ConstantDef*> &Constants, PStruct *cls, PSymbolTable *ot);
 	void CompileAllConstants();
 	void AddConstant(ZCC_ConstantWork &constant);
-	bool CompileConstant(ZCC_ConstantDef *def, PSymbolTable *Symbols);
+	bool CompileConstant(ZCC_ConstantWork *def);
 
 	void CompileAllFields();
 	bool CompileFields(PStruct *type, TArray<ZCC_VarDeclarator *> &Fields, PClass *Outer, PSymbolTable *TreeNodes, bool forstruct, bool hasnativechildren = false);