public void Visit(ProgramNode program)
{
Emit("var stack = [];");
foreach (var function in program.Functions)
{
function.Accept(this);
}
Emit("Main();");
}
public void Visit(ProgramNode program)
{
_labelCount = 0;
_innermostWhileLabelIndex = null;
EmitHead();
foreach (var function in program.Functions)
{
function.Accept(this);
}
}
public void FindSymbols(ProgramNode program)
{
// We want functions to be callable independently of their declaration order, so we do a first pass to find all function names
foreach (var function in program.Functions)
{
var entry = new SymbolTableEntry(function.Name.Name, SymbolTableEntryType.Function, 0);
AddSymbol(function.Name.Name, entry);
}
foreach (var function in program.Functions)
{
_scopeStack.PushScope(function.Name.Name);
int unused = 0;
EnterIdentifiers(function.Parameters, SymbolTableEntryType.Parameter, ref unused);
int localVariableIndex = 0;
FindSymbolsRecursively(function.Body, ref localVariableIndex);
_scopeStack.PopScope();
function.LocalVariableCount = localVariableIndex;
}
}
/// <summary>
/// Performs the compilation process
/// </summary>
public void Compile()
{
// Tokenize
Write("Tokenising...");
List <Token> tokens = Tokenizer.GetAllTokens();
if (Reporter.HasErrors)
{
return;
}
WriteLine("Done");
//WriteLine(string.Join("\n", tokens));
//Parse
Write("Parsing...");
//Parser.Parse(tokens);
ProgramNode tree = Parser.Parse(tokens);
if (Reporter.HasErrors)
{
WriteLine("ERRORS");
return;
}
WriteLine("Done");
//WriteLine(TreePrinter.ToString(tree));
Write("Identifying...");
Identifier.PerformIdentification(tree);
if (Reporter.HasErrors)
{
return;
}
WriteLine("Done");
//WriteLine(TreePrinter.ToString(tree));
//Type checking
Write("Type Checking...");
Checker.PerformTypeChecking(tree);
if (Reporter.HasErrors)
{
return;
}
WriteLine("Done");
WriteLine(TreePrinter.ToString(tree));
// Code generation
Write("Generating code...");
TargetCode targetCode = Generator.GenerateCodeFor(tree);
if (Reporter.HasErrors)
{
return;
}
WriteLine("Done");
// Output
Write("Writing to file...");
Writer.WriteToFiles(targetCode);
if (Reporter.HasErrors)
{
return;
}
WriteLine("Done");
}
public void Generate(ProgramNode program)
{
Visit(program);
}
public void Generate(ProgramNode program)
{
Visit(program);
}
public SyntaxTree(ProgramNode root = null, string programName = null)
{
this.root = root;
this.programName = programName;
}
public void VisitProgramNode(ProgramNode node)
{
}