- removed the remaining Doom-specific parts of the script compiler.

source/common/scripting/core/imports.cpp

@@ -228,26 +228,3 @@ void InitImports()
 	}
 }
 
-//==========================================================================
-//
-// SetImplicitArgs
-//
-// Adds the parameters implied by the function flags.
-//
-//==========================================================================
-
-void SetImplicitArgs(TArray<PType *> *args, TArray<uint32_t> *argflags, TArray<FName> *argnames, PContainerType *cls, uint32_t funcflags, int useflags)
-{
-	// Must be called before adding any other arguments.
-	assert(args == nullptr || args->Size() == 0);
-	assert(argflags == nullptr || argflags->Size() == 0);
-
-	if (funcflags & VARF_Method)
-	{
-		// implied self pointer
-		if (args != nullptr)		args->Push(NewPointer(cls, !!(funcflags & VARF_ReadOnly))); 
-		if (argflags != nullptr)	argflags->Push(VARF_Implicit | VARF_ReadOnly);
-		if (argnames != nullptr)	argnames->Push(NAME_self);
-	}
-}
-

source/common/scripting/frontend/zcc_compile.cpp

@@ -39,19 +39,18 @@
 #include "zcc_compile.h"
 #include "printf.h"
 #include "symbols.h"
-//#include "v_video.h"
 
 FSharedStringArena VMStringConstants;
 
 
-static int GetIntConst(FxExpression *ex, FCompileContext &ctx)
+int GetIntConst(FxExpression *ex, FCompileContext &ctx)
 {
 	ex = new FxIntCast(ex, false);
 	ex = ex->Resolve(ctx);
 	return ex ? static_cast<FxConstant*>(ex)->GetValue().GetInt() : 0;
 }
 
-static double GetFloatConst(FxExpression *ex, FCompileContext &ctx)
+double GetFloatConst(FxExpression *ex, FCompileContext &ctx)
 {
 	ex = new FxFloatCast(ex);
 	ex = ex->Resolve(ctx);
@@ -641,6 +640,7 @@ void ZCCCompiler::MessageV(ZCC_TreeNode *node, const char *txtcolor, const char
 // ZCCCompiler :: Compile
 //
 // Compile everything defined at this level.
+// This can be overridden to add custom content.
 //
 //==========================================================================
 
@@ -1347,15 +1347,13 @@ void ZCCCompiler::CompileAllFields()
 					type->Size = Classes[i]->ClassType()->ParentClass->Size;
 				}
 			}
-			/*if (type->TypeName == NAME_Actor)
+			if (!PrepareMetaData(type))
 			{
-				assert(type->MetaSize == 0);
-				AddActorInfo(type);	// AActor needs the actor info manually added to its meta data before adding any scripted fields.
+				if (Classes[i]->ClassType()->ParentClass)
+					type->MetaSize = Classes[i]->ClassType()->ParentClass->MetaSize;
+				else
+					type->MetaSize = 0;
 			}
-			else*/ if (Classes[i]->ClassType()->ParentClass)
-				type->MetaSize = Classes[i]->ClassType()->ParentClass->MetaSize;
-			else
-				type->MetaSize = 0;
 
 			if (CompileFields(type->VMType, Classes[i]->Fields, nullptr, &Classes[i]->TreeNodes, false, !!HasNativeChildren.CheckKey(type->TypeName)))
 			{
@@ -1922,11 +1920,33 @@ PType *ZCCCompiler::ResolveArraySize(PType *baseType, ZCC_Expression *arraysize,
 
 //==========================================================================
 //
+// SetImplicitArgs
 //
+// Adds the parameters implied by the function flags.
 //
 //==========================================================================
 
+void ZCCCompiler::SetImplicitArgs(TArray<PType*>* args, TArray<uint32_t>* argflags, TArray<FName>* argnames, PContainerType* cls, uint32_t funcflags, int useflags)
+{
+	// Must be called before adding any other arguments.
+	assert(args == nullptr || args->Size() == 0);
+	assert(argflags == nullptr || argflags->Size() == 0);
 
+	if (funcflags & VARF_Method)
+	{
+		// implied self pointer
+		if (args != nullptr)		args->Push(NewPointer(cls, !!(funcflags & VARF_ReadOnly)));
+		if (argflags != nullptr)	argflags->Push(VARF_Implicit | VARF_ReadOnly);
+		if (argnames != nullptr)	argnames->Push(NAME_self);
+	}
+}
+
+
+//==========================================================================
+//
+//
+//
+//==========================================================================
 
 void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool forclass)
 {
@@ -2041,14 +2061,14 @@ void ZCCCompiler::CompileFunction(ZCC_StructWork *c, ZCC_FuncDeclarator *f, bool
 		}
 		if (f->Flags & ZCC_Action)
 		{
-			/*
-			if (compileEnvironment.processActionFunc)
+			implicitargs = CheckActionKeyword(f,varflags, useflags, c);
+			if (implicitargs < 0)
 			{
-
+				Error(f, "'Action' not allowed as a function qualifier");
+				// Set state to allow continued compilation to find more errors.
+				varflags &= ~VARF_ReadOnly;
+				implicitargs = 1;
 			}
-			else
-			*/
-			Error(f, "'Action' not allowed as a function qualifier");
 		}
 		if (f->Flags & ZCC_Static) varflags = (varflags & ~VARF_Method) | VARF_Final, implicitargs = 0;	// Static implies Final.
 

source/common/scripting/frontend/zcc_compile.h

@@ -106,11 +106,14 @@ class ZCCCompiler
 {
 public:
 	ZCCCompiler(ZCC_AST &tree, DObject *outer, PSymbolTable &symbols, PNamespace *outnamespace, int lumpnum, const VersionInfo & ver);
-	~ZCCCompiler();
-	int Compile();
+	virtual ~ZCCCompiler();
+	virtual int Compile();
 
-private:
+protected:
 	const char * GetStringConst(FxExpression *ex, FCompileContext &ctx);
+	virtual int CheckActionKeyword(ZCC_FuncDeclarator* f, uint32_t &varflags, int useflags, ZCC_StructWork *c) { return -1; } // stock implementation does not support this.
+	virtual bool PrepareMetaData(PClass *type) { return false; }
+	virtual void SetImplicitArgs(TArray<PType*>* args, TArray<uint32_t>* argflags, TArray<FName>* argnames, PContainerType* cls, uint32_t funcflags, int useflags);
 
 	int IntConstFromNode(ZCC_TreeNode *node, PContainerType *cls);
 	FString StringConstFromNode(ZCC_TreeNode *node, PContainerType *cls);

source/common/scripting/frontend/zcc_parser.cpp

@@ -350,16 +350,20 @@ parse_end:
 
 //**--------------------------------------------------------------------------
 
-static void DoParse(int lumpnum)
+PNamespace *ParseOneScript(const int baselump, ZCCParseState &state)
 {
 	FScanner sc;
 	void *parser;
 	ZCCToken value;
-	auto baselump = lumpnum;
+	int lumpnum = baselump;
 	auto fileno = fileSystem.GetFileContainer(lumpnum);
 
+	if (TokenMap.CountUsed() == 0)
+	{
+		InitTokenMap();
+	}
+
 	parser = ZCCParseAlloc(malloc);
-	ZCCParseState state;
 
 #ifndef NDEBUG
 	FILE *f = nullptr;
@@ -471,37 +475,8 @@ static void DoParse(int lumpnum)
 		}
 	}
 
-	PSymbolTable symtable;
 	auto newns = fileSystem.GetFileContainer(baselump) == 0 ? Namespaces.GlobalNamespace : Namespaces.NewNamespace(fileSystem.GetFileContainer(baselump));
-	ZCCCompiler cc(state, NULL, symtable, newns, baselump, state.ParseVersion);
-	cc.Compile();
-
-	if (FScriptPosition::ErrorCounter > 0)
-	{
-		// Abort if the compiler produced any errors. Also do not compile further lumps, because they very likely miss some stuff.
-		I_Error("%d errors, %d warnings while compiling %s", FScriptPosition::ErrorCounter, FScriptPosition::WarnCounter, fileSystem.GetFileFullPath(baselump).GetChars());
-	}
-	else if (FScriptPosition::WarnCounter > 0)
-	{
-		// If we got warnings, but no errors, print the information but continue.
-		Printf(TEXTCOLOR_ORANGE "%d warnings while compiling %s\n", FScriptPosition::WarnCounter, fileSystem.GetFileFullPath(baselump).GetChars());
-	}
-
-}
-
-void ParseScripts()
-{
-	if (TokenMap.CountUsed() == 0)
-	{
-		InitTokenMap();
-	}
-	int lump, lastlump = 0;
-	FScriptPosition::ResetErrorCounter();
-
-	while ((lump = fileSystem.FindLump("ZSCRIPT", &lastlump)) != -1)
-	{
-		DoParse(lump);
-	}
+	return newns;
 }
 
 static FString ZCCTokenName(int terminal)

source/common/scripting/frontend/zcc_parser.h

@@ -618,4 +618,7 @@ const char *GetMixinTypeString(EZCCMixinType type);
 
 ZCC_TreeNode *TreeNodeDeepCopy(ZCC_AST *ast, ZCC_TreeNode *orig, bool copySiblings);
 
+// Main entry point for the parser. Returns some data needed by the compiler.
+PNamespace* ParseOneScript(const int baselump, ZCCParseState& state);
+
 #endif

tools/CMakeLists.txt

@@ -1,6 +1,7 @@
 cmake_minimum_required( VERSION 2.8.7 )
 
 add_subdirectory( re2c )
+add_subdirectory( lemon )
 add_subdirectory( zipdir )
 
 set( CROSS_EXPORTS ${CROSS_EXPORTS} PARENT_SCOPE )