vhdlpp: Added ExpNew class.

vhdlpp/expression.cc

@@ -439,3 +439,12 @@ ExpCast::~ExpCast()
 {
 }
 
+ExpNew::ExpNew(Expression*size) :
+    size_(size)
+{
+}
+
+ExpNew::~ExpNew()
+{
+    delete size_;
+}

vhdlpp/expression.h

@@ -696,4 +696,23 @@ class ExpCast : public Expression {
       const VType*type_;
 };
 
+/*
+ * Class that handles 'new' statement. VHDL is not capable of dynamic memory
+ * allocation, but it is useful for emitting some cases.
+ */
+class ExpNew : public Expression {
+
+    public:
+      ExpNew(Expression*size);
+      ~ExpNew();
+
+      // There is no 'new' in VHDL - do not emit anything
+      void write_to_stream(std::ostream&) {};
+      int emit(ostream&out, Entity*ent, Architecture*arc);
+      void dump(ostream&out, int indent = 0) const;
+
+    private:
+      Expression*size_;
+};
+
 #endif /* IVL_expression_H */

vhdlpp/expression_debug.cc

@@ -76,3 +76,9 @@ void ExpCast::dump(ostream&out, int indent) const
       out << " to ";
       type_->emit_def(out, empty_perm_string);
 }
+
+void ExpNew::dump(ostream&out, int indent) const
+{
+      out << "New dynamic array size: ";
+      size_->dump(out, indent);
+}

vhdlpp/expression_emit.cc

@@ -870,3 +870,12 @@ int ExpCast::emit(ostream&out, Entity*ent, Architecture*arc)
       out << ")";
       return errors;
 }
+
+int ExpNew::emit(ostream&out, Entity*ent, Architecture*arc)
+{
+      int errors = 0;
+      out << "new[";
+      errors += size_->emit(out, ent, arc);
+      out << "]";
+      return errors;
+}