/// <summary>
/// Parse function body
/// </summary>
/// <param name="funcInfo">Function to parse</param>
private void ParseFunction(Parser1To2Pass.FunctionInfo funcInfo)
{
var funcElem = new FunctionElement();
m_currentFunction = funcElem;
funcElem.Info = funcInfo.Info;
StatementListElement statements = new StatementListElement();
m_currentBlock.Push(statements);
foreach (var arg in funcInfo.Info.Arguments)
{
var declElem = new VarDeclarationElement
{
VarType = arg.TypeInfo.Name,
VarName = arg.ArgName,
IgnoreInitialization = true
};
declElem.SetParent(statements);
funcElem.AddArgumentVariable(declElem);
}
if (funcInfo.FuncLexemes.Count > 0)
{
for (int i = 0, end = funcInfo.FuncLexemes.Count;;)
{
TreeElement element;
i = ParseStatement(funcInfo.FuncLexemes, i, out element);
if (element != null) //if null => ignore (block element)
{
var statementElem = new StatementElement();
statementElem.AddChild(element);
m_currentBlock.Peek().AddChild(statementElem);
}
if (i >= end)
{
break;
}
}
}
funcElem.AddChild(statements);
m_parserOutput.Functions.Add(funcElem);
m_currentBlock.Pop();
}
private static FunctionElement CreateMain()
{
var symbols = LanguageSymbols.Instance;
LanguageFunction functionInfo = new LanguageFunction();
functionInfo.Name = "!_Main";
functionInfo.Arguments = new List <LanguageFunction.FunctionArg>();
functionInfo.ReturnTypes = new List <LanguageType>();
symbols.AddUserFunction(functionInfo);
FunctionElement funcElement = new FunctionElement();
funcElement.Info = functionInfo;
StatementListElement statements = new StatementListElement();
funcElement.AddChild(statements);
FunctionCallElement callElement = new FunctionCallElement();
LanguageFunction mainFuncInfo = null;
try
{
mainFuncInfo = symbols.GetFunction("Main", new List <string>());
}
catch (CompilationException)
{
Compilation.WriteError("Main() wasn't found. Did you forget it?", -1);
}
callElement.FunctionInfo = mainFuncInfo;
callElement.CallArguments = new List <ValueElement>();
statements.AddChild(callElement);
SingleGenOpElement exitElement = new SingleGenOpElement();
exitElement.Operation = new GenOp {
Code = GenCodes.Exit, ArgCount = 0
};
statements.AddChild(exitElement);
return(funcElement);
}
private void FixFunctionOperations(FunctionElement func)
{
foreach (var op in m_currentOperations)
{
switch (op.Code)
{
case GenCodes.UpdateFunc:
{
op.Code = GenCodes.Func;
op.Bytes = ByteConverter.New()
.CastInt32(func.GetFunctionRequiredSpaceForVariables()
+ func.RequiredSpaceInLocals)
.Bytes;
}
break;
case GenCodes.ConvertAddressSetTempVar:
{
var converter = ByteConverter.New(op.Bytes.ToArray());
var offset = converter.GetInt32();
var size = converter.GetInt32();
int spaceOffset = func.GetFunctionRequiredSpaceForVariables();
op.Code = GenCodes.SetLVarVal;
op.Bytes = ByteConverter.New().CastInt32(spaceOffset + offset).CastInt32(size).Bytes;
}
break;
case GenCodes.ConvertAddressGetTempVar:
{
var converter = ByteConverter.New(op.Bytes.ToArray());
var offset = converter.GetInt32();
var size = converter.GetInt32();
int spaceOffset = func.GetFunctionRequiredSpaceForVariables();
op.Code = GenCodes.GetLVarVal;
op.Bytes = ByteConverter.New().CastInt32(spaceOffset + offset).CastInt32(size).Bytes;
}
break;
}
}
}
public override void GenerateInstructions(Generator generator)
{
FunctionElement func = RootParent <FunctionElement>();
foreach (var child in m_children)
{
child.GenerateInstructions(generator);
}
if (m_localVariables.Count > 0)
{
foreach (var variable in m_localVariables)
{
variable.GenLowLevelDelete(generator);
}
foreach (var variable in m_localVariables)
{
func.PopLocalVarStackSpace(variable.VarType, variable.VarName);
}
generator.RemoveLastNLocalVars(m_localVariables.Count);
}
}