DIRECTOR: Lingo: Stub for context creation

2 files changed, 19 insertions, 0 deletions

diff --git a/engines/director/lingo/lingo-codegen.cpp b/engines/director/lingo/lingo-codegen.cpp
index 8473f2e8a0..b5bc8014c1 100644
--- a/engines/director/lingo/lingo-codegen.cpp
+++ b/engines/director/lingo/lingo-codegen.cpp
@@ -64,6 +64,16 @@ void Lingo::execute(int pc) {
 	}
 }
 
+void Lingo::pushContext() {
+	Context *con = new Context;
+
+	_contexts.push_back(con);
+}
+
+void Lingo::popContext() {
+	_contexts.pop_back();
+}
+
 Symbol *Lingo::lookupVar(const char *name, bool create, bool putInLocalList) {
 	Symbol *sym;
 
diff --git a/engines/director/lingo/lingo.h b/engines/director/lingo/lingo.h
index becd41002a..bec14f2b59 100644
--- a/engines/director/lingo/lingo.h
+++ b/engines/director/lingo/lingo.h
@@ -113,6 +113,11 @@ typedef Common::HashMap<int32, ScriptData *> ScriptHash;
 typedef Common::Array<Datum> StackData;
 typedef Common::HashMap<Common::String, Symbol *, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> SymbolHash;
 
+struct Context {	/* execution context */
+	Symbol *handler;
+	SymbolHash *localvars;
+};
+
 class Lingo {
 public:
 	Lingo(DirectorEngine *vm);
@@ -135,6 +140,8 @@ public:
 
 public:
 	void execute(int pc);
+	void pushContext();
+	void popContext();
 	Symbol *lookupVar(const char *name, bool create = true, bool putInLocalList = true);
 	void define(Common::String &s, int start, int nargs);
 	void codeArg(Common::String *s);
@@ -205,6 +212,8 @@ private:
 	Common::HashMap<Common::String, bool, Common::IgnoreCase_Hash, Common::IgnoreCase_EqualTo> _localvars;
 	SymbolHash _handlers;
 
+	Common::Array<Context *> _contexts;
+
 	int _pc;
 
 	StackData _stack;