public void run()
{
m_globalMemorySpace = new MemorySpace("globals");
m_currentMemorySpace = m_globalMemorySpace;
execute(m_ast);
}
public void PushMemorySpace(MemorySpace pMemorySpace)
{
if(m_memorySpaces.Count > 0 && m_memorySpaces.Peek() == pMemorySpace) {
//Console.WriteLine("Pushing duplicate memory space, will ignore");
return;
}
//Console.WriteLine("Push " + pMemorySpace.getName() + " into scope " + this.getName());
m_memorySpaces.Push(pMemorySpace);
}
public void PushMemorySpace(MemorySpace pMemorySpace)
{
//Console.WriteLine("Push " + pMemorySpace.getName() + " into scope " + this.getName());
m_memorySpaces.Push(pMemorySpace);
}
private ReturnValue function(AST tree, List<ReturnValue> parameterValues)
{
// Push scope
Scope m_previousScope = m_currentScope;
AST_FunctionDefinitionNode functionDefinitionNode = (AST_FunctionDefinitionNode)(tree);
Assert.IsNotNull(functionDefinitionNode);
m_currentScope = (Scope)functionDefinitionNode.getScope();
Assert.IsNotNull(m_currentScope);
// Push memory space
MemorySpace m_previousMemorySpace = m_currentMemorySpace;
MemorySpace functionMemorySpace =
new MemorySpace("<FUNCTION_SPACE " + tree.getChild(1).getTokenString() + ">");
m_memoryStack.Push(functionMemorySpace);
m_currentMemorySpace = functionMemorySpace;
// Add parameters to memory space
List<AST> parameterDeclarations = tree.getChild(2).getChildren();
if(parameterDeclarations != null) {
if(parameterDeclarations.Count != parameterValues.Count) {
m_errorHandler.errorOccured(
"The number of arguments in function " +
tree.getChild(1).getTokenString() +
" does not match!",
Error.ErrorType.SYNTAX);
}
foreach(AST parameter in parameterDeclarations) {
varDeclaration(parameter);
}
}
// Assign values to parameters
if(parameterValues != null) {
int i = 0;
foreach(ReturnValue parameterValue in parameterValues) {
string parameterName = parameterDeclarations[i].getChild(1).getTokenString();
assignValue(parameterName, parameterValue);
i++;
}
}
// Execute function
ReturnValue returnValue = null;
try {
executeAllChildNodes(tree.getChild(3)); // child 3 is the function body
}
catch(ReturnValue functionReturnValue) {
returnValue = functionReturnValue;
}
// Pop memory space
m_memoryStack.Pop();
m_currentMemorySpace = m_previousMemorySpace;
// Pop scope
m_currentScope = m_previousScope;
Assert.IsNotNull(m_currentScope);
return returnValue;
}
public void PushMemorySpace(MemorySpace pMemorySpace)
{
//Console.WriteLine("Push " + pMemorySpace.getName() + " into scope " + this.getName());
m_memorySpaces.Push(pMemorySpace);
}
private ReturnValue function(AST tree, List <ReturnValue> parameterValues)
{
// Push scope
Scope m_previousScope = m_currentScope;
AST_FunctionDefinitionNode functionDefinitionNode = (AST_FunctionDefinitionNode)(tree);
Assert.IsNotNull(functionDefinitionNode);
m_currentScope = (Scope)functionDefinitionNode.getScope();
Assert.IsNotNull(m_currentScope);
// Push memory space
MemorySpace m_previousMemorySpace = m_currentMemorySpace;
MemorySpace functionMemorySpace =
new MemorySpace("<FUNCTION_SPACE " + tree.getChild(1).getTokenString() + ">");
m_memoryStack.Push(functionMemorySpace);
m_currentMemorySpace = functionMemorySpace;
// Add parameters to memory space
List <AST> parameterDeclarations = tree.getChild(2).getChildren();
if (parameterDeclarations != null)
{
if (parameterDeclarations.Count != parameterValues.Count)
{
m_errorHandler.errorOccured(
"The number of arguments in function " +
tree.getChild(1).getTokenString() +
" does not match!",
Error.ErrorType.SYNTAX);
}
foreach (AST parameter in parameterDeclarations)
{
varDeclaration(parameter);
}
}
// Assign values to parameters
if (parameterValues != null)
{
int i = 0;
foreach (ReturnValue parameterValue in parameterValues)
{
string parameterName = parameterDeclarations[i].getChild(1).getTokenString();
assignValue(parameterName, parameterValue);
i++;
}
}
// Execute function
ReturnValue returnValue = null;
try {
executeAllChildNodes(tree.getChild(3)); // child 3 is the function body
}
catch (ReturnValue functionReturnValue) {
returnValue = functionReturnValue;
}
// Pop memory space
m_memoryStack.Pop();
m_currentMemorySpace = m_previousMemorySpace;
// Pop scope
m_currentScope = m_previousScope;
Assert.IsNotNull(m_currentScope);
return(returnValue);
}