private void ProcessTokenAtTopLevel(Token thisToken)
{
if (thisToken is ModifierToken)
{
_state.NextTokenModifiers.Add((ModifierToken)thisToken);
}
else if (thisToken.IsVariableType)
{
bool wasFunction = false;
do
{
wasFunction = ParseAndAddGlobalVariableOrFunction(thisToken);
}while ((!wasFunction) && (_source.NextIsKeyword(PredefinedSymbol.Comma)));
if (!wasFunction)
{
_source.ExpectKeyword(PredefinedSymbol.Semicolon);
}
_state.NextTokenModifiers.Clear();
}
else if (thisToken is KeywordToken)
{
PredefinedSymbol keyword = ((KeywordToken)thisToken).SymbolType;
if (keyword == PredefinedSymbol.StructDefinition)
{
_output.AddStruct(ProcessStructDeclaration());
}
else if (keyword == PredefinedSymbol.Enum)
{
ProcessEnumDeclaration();
}
else if (keyword == PredefinedSymbol.Export)
{
ProcessExportCommand();
}
else
{
RecordError(ErrorCode.InvalidUseOfKeyword, "Invalid use of '" + thisToken.Name + "'");
}
}
else if (thisToken.Name.StartsWith(Constants.NEW_SCRIPT_MARKER))
{
_scriptName = thisToken.Name.Substring(Constants.NEW_SCRIPT_MARKER.Length, thisToken.Name.Length - Constants.NEW_SCRIPT_MARKER.Length - 1);
}
else
{
RecordError(ErrorCode.UnexpectedToken, "Unexpected '" + thisToken.Name + "'");
}
}
public static void SetArrayPropertiesOnTokenFromStream(ScriptReader source, Token variableName)
{
if (source.NextIsKeyword(PredefinedSymbol.OpenSquareBracket))
{
variableName.IsArray = true;
if (source.NextIsKeyword(PredefinedSymbol.CloseSquareBracket))
{
variableName.ArraySize = Token.ARRAY_SIZE_DYNAMIC;
}
else
{
variableName.ArraySize = source.ReadNextAsConstInt();
source.ExpectKeyword(PredefinedSymbol.CloseSquareBracket);
}
}
}
public static void SetArrayPropertiesOnTokenFromStream(ScriptReader source, Token variableName)
{
if (source.NextIsKeyword(PredefinedSymbol.OpenSquareBracket))
{
variableName.IsArray = true;
if (source.NextIsKeyword(PredefinedSymbol.CloseSquareBracket))
{
variableName.ArraySize = Token.ARRAY_SIZE_DYNAMIC;
}
else
{
variableName.ArraySize = source.ReadNextAsConstInt();
source.ExpectKeyword(PredefinedSymbol.CloseSquareBracket);
}
}
}
private void ProcessNextCodeStatement(bool allowVariableDeclarations)
{
Token nextToken = _source.PeekNextToken();
while (nextToken is ModifierToken)
{
_source.ReadNextToken();
_state.NextTokenModifiers.Add((ModifierToken)nextToken);
nextToken = _source.PeekNextToken();
}
if (nextToken is EndOfStreamToken)
{
throw new CompilerMessage(ErrorCode.EndOfInputReached, "The end of the script was reached in the middle of a function");
}
if ((nextToken is KeywordToken) &&
(((KeywordToken)nextToken).SymbolType == PredefinedSymbol.OpenBrace))
{
ProcessCodeBlock();
}
else if (nextToken is KeywordToken)
{
_source.ReadNextToken();
ProcessKeyword((KeywordToken)nextToken);
}
else if (nextToken.IsVariableType)
{
_source.PushLocation();
Token variableType = _source.ReadNextToken();
if (_source.NextIsKeyword(PredefinedSymbol.Dot))
{
// it's a static member access
_source.PopLocation();
GenerateCodeForExpression(ReadExpression(true, PredefinedSymbol.Semicolon));
}
else
{
_source.DeletePushedLocation();
if (!allowVariableDeclarations)
{
throw new CompilerMessage(ErrorCode.VariableDeclarationNotAllowedHere, "The variable would go out of scope as soon as it was declared");
}
do
{
DeclareLocalVariable(variableType);
}while (_source.NextIsKeyword(PredefinedSymbol.Comma));
_source.ExpectKeyword(PredefinedSymbol.Semicolon);
_state.NextTokenModifiers.Clear();
}
}
else
{
GenerateCodeForExpression(ReadExpression(true, PredefinedSymbol.Semicolon));
}
}
