--- linuxsampler/trunk/src/scriptvm/tree.cpp	2014/06/01 14:44:38	2588
+++ linuxsampler/trunk/src/scriptvm/tree.cpp	2019/08/01 10:22:56	3551
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014 Christian Schoenebeck and Andreas Persson
+ * Copyright (c) 2014 - 2019 Christian Schoenebeck and Andreas Persson
  *
  * http://www.linuxsampler.org
  *
@@ -16,8 +16,7 @@
 namespace LinuxSampler {
     
 bool isNoOperation(StatementRef statement) {
-    NoOperation* noOp = dynamic_cast<NoOperation*>(&*statement);
-    return noOp;
+    return statement->statementType() == STMT_NOOP;
 }
     
 Node::Node() {
@@ -35,6 +34,17 @@
     return ToString(evalInt());
 }
 
+String IntArrayExpr::evalCastToStr() {
+    String s = "{";
+    for (int i = 0; i < arraySize(); ++i) {
+        int val = evalIntElement(i);
+        if (i) s += ",";
+        s += ToString(val);
+    }
+    s += "}";
+    return s;
+}
+
 int IntLiteral::evalInt() {
     return value;
 }
@@ -102,8 +112,12 @@
 
 int Div::evalInt() {
     IntExpr* pLHS = dynamic_cast<IntExpr*>(&*lhs);
-    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);;
-    return (pLHS && pRHS) ? pRHS->evalInt() == 0 ? 0 : pLHS->evalInt() / pRHS->evalInt() : 0;
+    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);
+    if (!pLHS || !pRHS) return 0;
+    int l = pLHS->evalInt();
+    int r = pRHS->evalInt();
+    if (r == 0) return 0;
+    return l / r;
 }
 
 void Div::dump(int level) {
@@ -144,6 +158,13 @@
     printf(")\n");
 }
 
+bool Args::isPolyphonic() const {
+    for (int i = 0; i < args.size(); ++i)
+        if (args[i]->isPolyphonic())
+            return true;
+    return false;
+}
+
 EventHandlers::EventHandlers() {
     //printf("EventHandlers::Constructor 0x%lx\n", (long long)this);
 }
@@ -177,6 +198,13 @@
     return const_cast<EventHandler*>(&*args.at(index));
 }
 
+bool EventHandlers::isPolyphonic() const {
+    for (int i = 0; i < args.size(); ++i)
+        if (args[i]->isPolyphonic())
+            return true;
+    return false;
+}
+
 Assignment::Assignment(VariableRef variable, ExpressionRef value)
    : variable(variable), value(value)
 {
@@ -194,6 +222,11 @@
     return STMT_SUCCESS;
 }
 
+EventHandler::EventHandler(StatementsRef statements) {
+    this->statements = statements;
+    usingPolyphonics = statements->isPolyphonic();
+}
+
 void EventHandler::dump(int level) {
     printIndents(level);
     printf("EventHandler {\n");
@@ -217,6 +250,44 @@
     return &*args.at(i);
 }
 
+bool Statements::isPolyphonic() const {
+    for (int i = 0; i < args.size(); ++i)
+        if (args[i]->isPolyphonic())
+            return true;
+    return false;
+}
+
+DynamicVariableCall::DynamicVariableCall(const String& name, ParserContext* ctx, VMDynVar* v)
+    : Variable(ctx, 0, false), dynVar(v), varName(name)
+{
+}
+
+int DynamicVariableCall::evalInt() {
+    VMIntExpr* expr = dynamic_cast<VMIntExpr*>(dynVar);
+    if (!expr) return 0;
+    return expr->evalInt();
+}
+
+String DynamicVariableCall::evalStr() {
+    VMStringExpr* expr = dynamic_cast<VMStringExpr*>(dynVar);
+    if (!expr) return "";
+    return expr->evalStr();
+}
+
+String DynamicVariableCall::evalCastToStr() {
+    if (dynVar->exprType() == STRING_EXPR) {
+        return evalStr();
+    } else {
+        VMIntExpr* intExpr = dynamic_cast<VMIntExpr*>(dynVar);
+        return intExpr ? ToString(intExpr->evalInt()) : "";
+    }
+}
+
+void DynamicVariableCall::dump(int level) {
+    printIndents(level);
+    printf("Dynamic Variable '%s'\n", varName.c_str());
+}
+
 void FunctionCall::dump(int level) {
     printIndents(level);
     printf("FunctionCall '%s' args={\n", functionName.c_str());
@@ -252,6 +323,13 @@
     return intExpr->evalInt();
 }
 
+VMIntArrayExpr* FunctionCall::asIntArray() const {
+    VMFnResult* result = const_cast<FunctionCall*>(this)->execVMFn();
+    if (!result) return 0;
+    VMIntArrayExpr* intArrExpr = dynamic_cast<VMIntArrayExpr*>(result->resultValue());
+    return intArrExpr;
+}
+
 String FunctionCall::evalStr() {
     VMFnResult* result = execVMFn();
     if (!result) return "";
@@ -298,11 +376,12 @@
 
 void IntVariable::assign(Expression* expr) {
     IntExpr* intExpr = dynamic_cast<IntExpr*>(expr);
-    if (intExpr)
+    if (intExpr) {
         if (polyphonic)
             context->execContext->polyphonicIntMemory[memPos] = intExpr->evalInt();
         else
             (*context->globalIntMemory)[memPos] = intExpr->evalInt();
+    }
 }
 
 int IntVariable::evalInt() {
@@ -316,6 +395,7 @@
 
 void IntVariable::dump(int level) {
     printIndents(level);
+    printf("IntVariable\n");
     //printf("IntVariable memPos=%d\n", memPos);
 }
 
@@ -345,6 +425,26 @@
     printf("ConstIntVariable val=%d\n", value);
 }
 
+BuiltInIntVariable::BuiltInIntVariable(const String& name, VMIntRelPtr* ptr)
+    : IntVariable(NULL,false,false), name(name), ptr(ptr)
+{
+}
+
+void BuiltInIntVariable::assign(Expression* expr) {
+    IntExpr* valueExpr = dynamic_cast<IntExpr*>(expr);
+    if (!valueExpr) return;
+    ptr->assign(valueExpr->evalInt());
+}
+
+int BuiltInIntVariable::evalInt() {
+    return ptr->evalInt();
+}
+
+void BuiltInIntVariable::dump(int level) {
+    printIndents(level);
+    printf("Built-in IntVar '%s'\n", name.c_str());
+}
+
 PolyphonicIntVariable::PolyphonicIntVariable(ParserContext* ctx)
     : IntVariable(ctx,true,false)
 {
@@ -362,8 +462,8 @@
     memset(&values[0], 0, size * sizeof(int));
 }
 
-IntArrayVariable::IntArrayVariable(ParserContext* ctx, int size, ArgsRef values)
-    : Variable(ctx, 0, false)
+IntArrayVariable::IntArrayVariable(ParserContext* ctx, int size, ArgsRef values, bool _bConst)
+    : Variable(ctx, 0, _bConst)
 {
     this->values.resize(size);
     for (int i = 0; i < values->argsCount(); ++i) {
@@ -372,6 +472,11 @@
     }
 }
 
+IntArrayVariable::IntArrayVariable(ParserContext* ctx, bool bConst)
+    : Variable(ctx, 0, bConst)
+{
+}
+
 int IntArrayVariable::evalIntElement(uint i) {
     if (i >= values.size()) return 0;
     return values[i];
@@ -396,7 +501,26 @@
     printf(")\n");
 }
 
-IntArrayElement::IntArrayElement(IntArrayVariableRef array, IntExprRef arrayIndex)
+BuiltInIntArrayVariable::BuiltInIntArrayVariable(const String& name, VMInt8Array* array)
+    : IntArrayVariable(NULL, false), name(name), array(array)
+{
+}
+
+int BuiltInIntArrayVariable::evalIntElement(uint i) {
+    return i >= array->size ? 0 : array->data[i];
+}
+
+void BuiltInIntArrayVariable::assignIntElement(uint i, int value) {
+    if (i >= array->size) return;
+    array->data[i] = value;
+}
+
+void BuiltInIntArrayVariable::dump(int level) {
+    printIndents(level);
+    printf("Built-In Int Array Variable '%s'\n", name.c_str());
+}
+
+IntArrayElement::IntArrayElement(IntArrayExprRef array, IntExprRef arrayIndex)
     : IntVariable(NULL, false, false, 0), array(array), index(arrayIndex)
 {    
 }
@@ -493,6 +617,12 @@
     return NULL;
 }
 
+bool If::isPolyphonic() const {
+    if (condition->isPolyphonic() || ifStatements->isPolyphonic())
+        return true;
+    return elseStatements ? elseStatements->isPolyphonic() : false;
+}
+
 void SelectCase::dump(int level) {
     printIndents(level);
     if (select)
@@ -543,6 +673,14 @@
     return NULL;
 }
 
+bool SelectCase::isPolyphonic() const {
+    if (select->isPolyphonic()) return true;
+    for (int i = 0; i < branches.size(); ++i)
+        if (branches[i].statements->isPolyphonic())
+            return true;
+    return false;
+}
+
 // void Case::addBranch(IntExprRef condition, StatementsRef statements) {
 //     CaseBranchRef b = new CaseBranchRef;
 //     b->from = condition;
@@ -585,13 +723,34 @@
     return m_condition->evalInt();
 }
 
+void SyncBlock::dump(int level) {
+    printIndents(level);
+    printf("sync {\n");
+    m_statements->dump(level+1);
+    printIndents(level);
+    printf("}\n");
+}
+
+Statements* SyncBlock::statements() const {
+    return (m_statements) ? const_cast<Statements*>( &*m_statements ) : NULL;
+}
+
 void Neg::dump(int level) {
     printIndents(level);
     printf("Negative Expr\n");
 }
 
 String ConcatString::evalStr() {
-    return lhs->evalCastToStr() + rhs->evalCastToStr();
+    // temporaries required here to enforce the associative left (to right) order
+    // ( required for GCC and Visual Studio, see:
+    //   http://stackoverflow.com/questions/25842902/why-stdstring-concatenation-operator-works-like-right-associative-one
+    //   Personally I am not convinced that this is "not a bug" of the
+    //   compiler/STL implementation and the allegedly underlying "function call"
+    //   nature causing this is IMO no profound reason that the C++ language's
+    //   "+" operator's left associativity is ignored. -- Christian, 2016-07-14 )
+    String l = lhs->evalCastToStr();
+    String r = rhs->evalCastToStr();
+    return l + r;
 }
 
 void ConcatString::dump(int level) {
@@ -669,8 +828,9 @@
 
 int Or::evalInt() {
     IntExpr* pLHS = dynamic_cast<IntExpr*>(&*lhs);
+    if (pLHS->evalInt()) return 1;
     IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);;
-    return pLHS->evalInt() || pRHS->evalInt();
+    return (pRHS->evalInt()) ? 1 : 0;
 }
 
 void Or::dump(int level) {
@@ -684,10 +844,28 @@
     printf(")\n");
 }
 
+int BitwiseOr::evalInt() {
+    IntExpr* pLHS = dynamic_cast<IntExpr*>(&*lhs);
+    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);
+    return pLHS->evalInt() | pRHS->evalInt();
+}
+
+void BitwiseOr::dump(int level) {
+    printIndents(level);
+    printf("BitwiseOr(\n");
+    lhs->dump(level+1);
+    printIndents(level);
+    printf(",\n");
+    rhs->dump(level+1);
+    printIndents(level);
+    printf(")\n");
+}
+
 int And::evalInt() {
     IntExpr* pLHS = dynamic_cast<IntExpr*>(&*lhs);
-    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);;
-    return pLHS->evalInt() && pRHS->evalInt();
+    if (!pLHS->evalInt()) return 0;
+    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);
+    return (pRHS->evalInt()) ? 1 : 0;
 }
 
 void And::dump(int level) {
@@ -701,6 +879,23 @@
     printf(")\n");
 }
 
+int BitwiseAnd::evalInt() {
+    IntExpr* pLHS = dynamic_cast<IntExpr*>(&*lhs);
+    IntExpr* pRHS = dynamic_cast<IntExpr*>(&*rhs);
+    return pLHS->evalInt() & pRHS->evalInt();
+}
+
+void BitwiseAnd::dump(int level) {
+    printIndents(level);
+    printf("BitwiseAnd(\n");
+    lhs->dump(level+1);
+    printIndents(level);
+    printf(",\n");
+    rhs->dump(level+1);
+    printIndents(level);
+    printf(")\n");
+}
+
 void Not::dump(int level) {
     printIndents(level);
     printf("Not(\n");
@@ -709,6 +904,21 @@
     printf(")\n");
 }
 
+void BitwiseNot::dump(int level) {
+    printIndents(level);
+    printf("BitwiseNot(\n");
+    expr->dump(level+1);
+    printIndents(level);
+    printf(")\n");
+}
+
+StatementsRef ParserContext::userFunctionByName(const String& name) {
+    if (!userFnTable.count(name)) {
+        return StatementsRef();
+    }
+    return userFnTable.find(name)->second;
+}
+
 VariableRef ParserContext::variableByName(const String& name) {
     if (!vartable.count(name)) {
         return VariableRef();
@@ -742,24 +952,39 @@
     }
 }
 
-void ParserContext::addErr(int line, const char* txt) {
+void ParserContext::addErr(int firstLine, int lastLine, int firstColumn, int lastColumn, const char* txt) {
     ParserIssue e;
     e.type = PARSER_ERROR;
     e.txt = txt;
-    e.line = line;
+    e.firstLine = firstLine;
+    e.lastLine = lastLine;
+    e.firstColumn = firstColumn;
+    e.lastColumn = lastColumn;
     vErrors.push_back(e);
     vIssues.push_back(e);
 }
 
-void ParserContext::addWrn(int line, const char* txt) {
+void ParserContext::addWrn(int firstLine, int lastLine, int firstColumn, int lastColumn, const char* txt) {
     ParserIssue w;
     w.type = PARSER_WARNING;
     w.txt = txt;
-    w.line = line;
+    w.firstLine = firstLine;
+    w.lastLine = lastLine;
+    w.firstColumn = firstColumn;
+    w.lastColumn = lastColumn;
     vWarnings.push_back(w);
     vIssues.push_back(w);
 }
 
+void ParserContext::addPreprocessorComment(int firstLine, int lastLine, int firstColumn, int lastColumn) {
+    CodeBlock block;
+    block.firstLine = firstLine;
+    block.lastLine = lastLine;
+    block.firstColumn = firstColumn;
+    block.lastColumn = lastColumn;
+    vPreprocessorComments.push_back(block);
+}
+
 bool ParserContext::setPreprocessorCondition(const char* name) {
     if (builtinPreprocessorConditions.count(name)) return false;
     if (userPreprocessorConditions.count(name)) return false;
@@ -791,6 +1016,10 @@
     return vWarnings;
 }
 
+std::vector<CodeBlock> ParserContext::preprocessorComments() const {
+    return vPreprocessorComments;
+}
+
 VMEventHandler* ParserContext::eventHandler(uint index) {
     if (!handlers) return NULL;
     return handlers->eventHandler(index);
@@ -801,4 +1030,59 @@
     return handlers->eventHandlerByName(name);
 }
 
+void ParserContext::registerBuiltInConstIntVariables(const std::map<String,int>& vars) {
+    for (std::map<String,int>::const_iterator it = vars.begin();
+         it != vars.end(); ++it)
+    {
+        ConstIntVariableRef ref = new ConstIntVariable(it->second);
+        vartable[it->first] = ref;
+    }
+}
+
+void ParserContext::registerBuiltInIntVariables(const std::map<String,VMIntRelPtr*>& vars) {
+    for (std::map<String,VMIntRelPtr*>::const_iterator it = vars.begin();
+         it != vars.end(); ++it)
+    {
+        BuiltInIntVariableRef ref = new BuiltInIntVariable(it->first, it->second);
+        vartable[it->first] = ref;
+    }
+}
+
+void ParserContext::registerBuiltInIntArrayVariables(const std::map<String,VMInt8Array*>& vars) {
+    for (std::map<String,VMInt8Array*>::const_iterator it = vars.begin();
+         it != vars.end(); ++it)
+    {
+        BuiltInIntArrayVariableRef ref = new BuiltInIntArrayVariable(it->first, it->second);
+        vartable[it->first] = ref;
+    }
+}
+
+void ParserContext::registerBuiltInDynVariables(const std::map<String,VMDynVar*>& vars) {
+    for (std::map<String,VMDynVar*>::const_iterator it = vars.begin();
+         it != vars.end(); ++it)
+    {
+        DynamicVariableCallRef ref = new DynamicVariableCall(it->first, this, it->second);
+        vartable[it->first] = ref;
+    }
+}
+
+ExecContext::ExecContext() :
+    status(VM_EXEC_NOT_RUNNING), flags(STMT_SUCCESS), stackFrame(-1),
+    suspendMicroseconds(0), instructionsCount(0)
+{
+    exitRes.value = NULL;
+}
+
+void ExecContext::forkTo(VMExecContext* ectx) const {
+    ExecContext* child = dynamic_cast<ExecContext*>(ectx);
+
+    child->polyphonicIntMemory.copyFlatFrom(polyphonicIntMemory);
+    child->status = VM_EXEC_SUSPENDED;
+    child->flags = STMT_SUCCESS;
+    child->stack.copyFlatFrom(stack);
+    child->stackFrame = stackFrame;
+    child->suspendMicroseconds = 0;
+    child->instructionsCount = 0;
+}
+
 } // namespace LinuxSampler