private Boolean inCurrentScope(String id)
{
Boolean isNewId = true;
ScopeNode currentScopeNode = this.scopes[this.currentScope];
for (int i = 0; i < currentScopeNode.scopeMembers.Count; i++)
{
if (id == currentScopeNode.scopeMembers[i].id.ToString())
{
isNewId = false;
}
}
return(isNewId);
}
private void generateVarDecl(Node root)
{
String type = root.children[0].name;
String id = root.children[1].name;
Boolean isNew = inCurrentScope(id);
if (isNew)
{
ScopeNode currentScope = this.scopes[this.currentScope];
currentScope.scopeMembers.Add(new ScopeElement(type, id));
buildPrintMessage("id: " + id + " created in scope " + this.currentScope + ".");
}
else
{
buildPrintMessage("~~~Error: id " + id + " already exists in scope " + this.currentScope + ".");
this.errorCount++;
}
}
private Tuple <int, int> findScope(String id)
{
Boolean foundId = false;
int scopeIndex = -1;
int locationInScope = -1;
ScopeNode currentScopeNode = this.scopes[this.currentScope];
int scopePlaceHolder = this.currentScope;
while (this.currentScope != -1 && !foundId)
{
foundId = !inCurrentScope(id);
if (!foundId)
{
this.currentScope = currentScopeNode.parentId;
if (this.currentScope != -1)
{
currentScopeNode = this.scopes[this.currentScope];
}
}
}
if (foundId)
{
scopeIndex = this.currentScope;
this.currentScope = scopePlaceHolder;
currentScopeNode = this.scopes[scopeIndex];
for (int i = 0; i < currentScopeNode.scopeMembers.Count; i++)
{
if (id == currentScopeNode.scopeMembers[i].id)
{
locationInScope = i;
}
}
}
return(new Tuple <int, int>(scopeIndex, locationInScope));
}
