1 files changed, 266 insertions, 0 deletions
diff --git a/engines/director/lingo/lingo-codegen.cpp b/engines/director/lingo/lingo-codegen.cpp
new file mode 100644
index 0000000000..07fb52290c
--- /dev/null
+++ b/engines/director/lingo/lingo-codegen.cpp
@@ -0,0 +1,266 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+// Heavily inspired by hoc
+// Copyright (C) AT&T 1995
+// All Rights Reserved
+//
+// Permission to use, copy, modify, and distribute this software and
+// its documentation for any purpose and without fee is hereby
+// granted, provided that the above copyright notice appear in all
+// copies and that both that the copyright notice and this
+// permission notice and warranty disclaimer appear in supporting
+// documentation, and that the name of AT&T or any of its entities
+// not be used in advertising or publicity pertaining to
+// distribution of the software without specific, written prior
+// permission.
+//
+// AT&T DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+// INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+// IN NO EVENT SHALL AT&T OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+// SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
+// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+// ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
+// THIS SOFTWARE.
+
+#include "engines/director/lingo/lingo.h"
+#include "common/file.h"
+#include "audio/decoders/wave.h"
+
+#include "director/lingo/lingo-gr.h"
+
+namespace Director {
+
+void Lingo::execute(int pc) {
+	for(_pc = pc; (*_currentScript)[_pc] != STOP && !_returning;) {
+
+		for (int i = 0; i < _stack.size(); i++) {
+			debugN(5, "%d ", _stack[i].u.i);
+		}
+		debug(5, "");
+
+		_pc++;
+		(*((*_currentScript)[_pc - 1]))();
+	}
+}
+
+Symbol *Lingo::lookupVar(const char *name, bool create, bool putInGlobalList) {
+	Symbol *sym;
+
+	// Looking for the cast member constants
+	if (_vm->getVersion() < 4) { // TODO: There could be a flag 'Allow Outdated Lingo' in Movie Info in D4
+		if (strlen(name) == 3) {
+			if (tolower(name[0]) >= 'a' && tolower(name[0]) <= 'h' &&
+				name[1] >= '1' && name[1] <= '8' &&
+				name[2] >= '1' && name[2] <= '8') {
+
+				if (!create)
+					error("Cast reference used in wrong context: %s", name);
+
+				int val = (tolower(name[0]) - 'a') * 64 + (name[1] - '1') * 8 + (name[2] - '1') + 1;
+				sym = new Symbol;
+
+				sym->type = CASTREF;
+				sym->u.i = val;
+
+				return sym;
+			}
+		}
+	}
+
+	if (!_localvars->contains(name)) { // Create variable if it was not defined
+		if (!create)
+			return NULL;
+
+		sym = new Symbol;
+		sym->name = (char *)calloc(strlen(name) + 1, 1);
+		Common::strlcpy(sym->name, name, strlen(name) + 1);
+		sym->type = VOID;
+		sym->u.i = 0;
+
+		(*_localvars)[name] = sym;
+
+		if (putInGlobalList) {
+			sym->global = true;
+			_globalvars[name] = sym;
+		}
+	} else {
+		sym = (*_localvars)[name];
+
+		if (sym->global)
+			sym = _globalvars[name];
+	}
+
+	return sym;
+}
+
+void Lingo::cleanLocalVars() {
+	// Clean up current scope local variables and clean up memory
+	for (SymbolHash::const_iterator h = _localvars->begin(); h != _localvars->end(); ++h) {
+		if (!h->_value->global)
+			delete h->_value;
+	}
+	delete g_lingo->_localvars;
+}
+
+void Lingo::define(Common::String &name, int start, int nargs, Common::String *prefix) {
+	Symbol *sym;
+
+	if (prefix)
+		name = *prefix + "-" + name;
+
+	debug(3, "define(\"%s\", %d, %d, %d)", name.c_str(), start, _currentScript->size() - 1, nargs);
+
+	if (!_handlers.contains(name)) { // Create variable if it was not defined
+		sym = new Symbol;
+
+		sym->name = (char *)calloc(name.size() + 1, 1);
+		Common::strlcpy(sym->name, name.c_str(), name.size() + 1);
+		sym->type = HANDLER;
+
+		_handlers[name] = sym;
+	} else {
+		sym = g_lingo->_handlers[name];
+
+		warning("Redefining handler '%s'", name.c_str());
+		delete sym->u.defn;
+	}
+
+	sym->u.defn = new ScriptData(&(*_currentScript)[start], _currentScript->size() - start + 1);
+	sym->nargs = nargs;
+}
+
+int Lingo::codeString(const char *str) {
+	int numInsts = calcStringAlignment(str);
+
+	// Where we copy the string over
+	int pos = _currentScript->size();
+
+	// Allocate needed space in script
+	for (int i = 0; i < numInsts; i++)
+		_currentScript->push_back(0);
+
+	byte *dst = (byte *)&_currentScript->front() + pos * sizeof(inst);
+
+	memcpy(dst, str, strlen(str) + 1);
+
+	return _currentScript->size();
+}
+
+int Lingo::codeFloat(double f) {
+	int numInsts = calcCodeAlignment(sizeof(double));
+
+	// Where we copy the string over
+	int pos = _currentScript->size();
+
+	// Allocate needed space in script
+	for (int i = 0; i < numInsts; i++)
+		_currentScript->push_back(0);
+
+	double *dst = (double *)((byte *)&_currentScript->front() + pos * sizeof(inst));
+
+	*dst = f;
+
+	return _currentScript->size();
+}
+
+void Lingo::codeArg(Common::String *s) {
+	_argstack.push_back(s);
+}
+
+void Lingo::codeArgStore() {
+	while (true) {
+		if (_argstack.empty()) {
+			break;
+		}
+
+		Common::String *arg = _argstack.back();
+		_argstack.pop_back();
+
+		code1(c_varpush);
+		codeString(arg->c_str());
+		code1(c_assign);
+		code1(c_xpop);
+
+		delete arg;
+	}
+}
+
+int Lingo::codeFunc(Common::String *s, int numpar) {
+	int ret = g_lingo->code1(g_lingo->c_call);
+
+	if (s->equalsIgnoreCase("me")) {
+		if (!g_lingo->_currentFactory.empty()) {
+			g_lingo->codeString(g_lingo->_currentFactory.c_str());
+			debug(2, "Repaced 'me' with %s", g_lingo->_currentFactory.c_str());
+		} else {
+			warning("'me' out of factory method");
+			g_lingo->codeString(s->c_str());
+		}
+	} else {
+		g_lingo->codeString(s->c_str());
+	}
+
+	inst num = 0;
+	WRITE_UINT32(&num, numpar);
+	g_lingo->code1(num);
+
+	return ret;
+}
+
+void Lingo::codeLabel(int label) {
+	_labelstack.push_back(label);
+}
+
+void Lingo::processIf(int elselabel, int endlabel) {
+	inst ielse1, iend;
+	int  else1 = elselabel;
+
+	WRITE_UINT32(&iend, endlabel);
+
+	while (true) {
+		if (_labelstack.empty()) {
+			warning("Label stack underflow");
+			break;
+		}
+
+		int label = _labelstack.back();
+		_labelstack.pop_back();
+
+		// This is beginning of our if()
+		if (!label)
+			break;
+
+		WRITE_UINT32(&ielse1, else1);
+		(*_currentScript)[label + 2] = ielse1;    /* elsepart */
+		(*_currentScript)[label + 3] = iend;      /* end, if cond fails */
+
+		else1 = label;
+	}
+}
+
+void Lingo::codeFactory(Common::String &name) {
+	_currentFactory = name;
+}
+
+}