public void VisitNode(Number node)
{
Attributes a = new Attributes("Number");
IntegerTypeDescriptor ITD = new IntegerTypeDescriptor();
a.typeInfo = ITD;
node.attrRef = a;
}
public void VisitNode(Expr node)
{
Utilities.TypeVisitAllChildren(node);
Attributes exprAttr = new Attributes("Expr");
node.attrRef = exprAttr;
ErrorTypeDescriptor ETD = new ErrorTypeDescriptor();
switch (node.Name)
{
case "-":
case "+":
case "/":
case "*":
case "%":
case "|":
case "&":
case "^":
IntegerTypeDescriptor ITD = new IntegerTypeDescriptor();
if (allChildrenAreInts(node) == true)
{
exprAttr.typeInfo = ITD;
}
else
{
exprAttr.typeInfo = ETD;
}
break;
case "<":
case ">":
case "<=":
case ">=":
case "||":
case "&&":
case "==":
case "!=":
BooleanTypeDescriptor BTD = new BooleanTypeDescriptor();
if (allChildrenAreSame(node) == true)
{
exprAttr.typeInfo = BTD;
}
else
{
exprAttr.typeInfo = ETD;
}
break;
case null:
ContainerTypeDescriptor CTD = new ContainerTypeDescriptor();
exprAttr.typeInfo = CTD;
break;
}
}
public SymbolTable()
{
symTableIdx = 0;
symTables.Add(new SymTable_Type());
// Add some basic things to the symbol table
Attributes a;
// Integer
IntegerTypeDescriptor ITD = new IntegerTypeDescriptor();
a = new Attributes("Type");
a.typeInfo = ITD;
symTables[0].Add("int32", a);
// Java types
JaveTypeTypeDescriptor JTD = new JaveTypeTypeDescriptor();
a = new Attributes("Some Java Thing");
a.typeInfo = JTD;
symTables[0].Add("java.io.PrintStream", a);
// Some methods
string[] knownMethods = { "Write",
"WriteLine",
"ps.print", };
foreach (string s in knownMethods)
{
a = new Attributes("MethodCall");
MethodDclTypeDescp MTD = new MethodDclTypeDescp();
a.typeInfo = MTD;
MTD.nameSpaceVar = "[mscorlib]System.Console";
MTD.Name = s;
MTD.returnType = "void";
symTables[0].Add(s, a);
}
}