internal void InitArrayDecl(Token initToken, int? initSize)
{
if (initToken != null && initSize != null)
{
this.tokenType = initToken;
this.size = (int)initSize;
}
}
internal static bool IsOperator(Token op)
{
foreach (string inop in AllOperators)
{
if (op.Value.Equals(inop))
{
return true;
}
}
return false;
}
private Expr ParseIfCondition(Expr expr, Token lparen)
{
if (_expressionScopeStack.Peek() is IfDeclExpr)
{
expr = _expressionScopeStack.Peek();
}
else
{
expr = new IfDeclExpr();
_expressionScopeStack.Push(expr);
}
if (lparen.Kind == ByteCodeIdentifiers.TokenCode.LParen)
{
ParseStatementExpression();
this.boe.Push(this.BinaryExpression);
((IfDeclExpr)expr).AddCondition(this.BinaryExpression);
}
return expr;
}
internal StringDeclExpr(Token var)
{
this.varName = var;
}
internal StatementsSeqExpr(
Token identifer,
SequenceExpressionType type)
: this()
{
identifier = identifer;
sequenceType = type;
}
private IdentifierExpression DetermineNextToken(Token t)
{
if (t != null && t.IsReserverdWord())
{
Token next = _scanner.GetToken();
Expr currentScope = null;
if (_expressionScopeStack.Count > 0)
{
currentScope = _expressionScopeStack.Peek();
}
if (next.IsReserverdWord())
{
throw new NireExecutionException("a reserverd word cannot be used in the expression");
}
if (next.IsIdentifier() && !next.isOperator)
{
var identExpression = new IdentifierExpression(t, new IdentifierExpression(next));
SymbolTable.CreateInstance().AddTokenToScope(currentScope, identExpression);
return identExpression;
}
}
else
{
var isParen = _scanner.Peek();
if (isParen.Kind == ByteCodeIdentifiers.TokenCode.LParen)
{
new ParserContext(ParserContextEnum.FuncExecution);
//_scanner.GetToken();
}
Expr defaultScope = _expressionScopeStack.Peek();
var funcExpression = new IdentifierExpression(t);
SymbolTable.CreateInstance().AddTokenToScope(defaultScope, funcExpression);
return funcExpression;
}
return null;
}
internal static LeafNode CreateLeafNode(Token token)
{
return null;
}
internal BlockDeclExpr(
Token returnType,
Token name)
: this()
{
functionReturnType = returnType;
functionIdentifier = name;
}
internal IntegerLeaf(Token t)
: base(t)
{
}
internal IdentifierExpression(Token token)
: this()
{
this.identifier = token;
}
internal static ShiftReduceEval Validate(Token opOnStack, Token opInStream)
{
string s = (String)opOnStack.Value;
string y = (String)opInStream.Value;
OpValue? stackEnum = GetOpAsEnum(s);
OpValue? streamEnum = GetOpAsEnum(y);
return OperatorPrecedenceTable.ShiftReduceOperationTable[(int)stackEnum, (int)streamEnum];
}
internal FunctionCallExpression(
Token functionName)
: this()
{
this.functionName = functionName.IdentiferName;
this.identifier = functionName;
}
internal FunctionDeclBlock(
Token returnType,
Token name)
: base(returnType, name)
{
}
internal FunctionCallExpression(
Token functionName,
List<Expr> parameters)
: this(functionName)
{
this.functionName = functionName.IdentiferName;
this.listOfParameters = parameters;
}
internal EndFunctionExpression(Token functionName)
: this()
{
this.identifier = functionName;
}
internal BlockDeclExpr(
Token name)
: this()
{
functionIdentifier = name;
}
internal ArrayDeclExpr(Token tokenType, Token tokenIdentifier, int size)
: this(tokenType, tokenIdentifier)
{
this.size = size;
}
internal OperatorNode(Token operand)
: base(operand)
{
}
internal IdentifierExpression(Token token, IdentifierExpression nested)
: this(token)
{
this.nestedExpression = nested;
}
/// <summary>
/// Parse the signature of the function
/// </summary>
private void ParseFunctionSignature(
Expr parentNode,
Token functionName)
{
List<Expr> pll = null;
functionName.Kind = ByteCodeIdentifiers.TokenCode.Function;
Token paren = _scanner.GetToken();
/*
* If there are parameters
* add them to the parameter list
*/
if (paren.Value.Equals(constants.LEFTPAREN))
{
pll = ParseFunctionParameters();
}
if (pll != null && pll.Count > 0)
{
var progExpression = parentNode as BlockDeclExpr;
if (progExpression != null)
{
progExpression.Parameters = pll;
}
if (functionName.IdentiferName.Equals(constants.MAIN, StringComparison.OrdinalIgnoreCase))
{
_isMain = true;
progExpression.IsMain = true;
}
}
}
internal IntDeclExpr(Token var, Token op, Token expr)
: base()
{
this.variableName = var;
this.theOperator = op;
this.assignmentExpression = expr;
}
internal OperatorExpression(Token token)
: this()
{
this.identifier = token;
operationType = Arity.binary;
}
internal IdentifierLeaf(Token identifier)
: base(identifier)
{
}
internal ProgramDeclBlock(
Token name)
: base(name)
{
}
internal LeafNode(Token value)
: base()
{
_value = value;
}
internal void AddTokenToList(Token token)
{
if (token.Kind == ByteCodeIdentifiers.TokenCode.Program)
{
this.Name = token;
this.tokenList.Add(token);
}
}
private Token ParseToRightBracket(Expr expr, Token bracket, BinaryOperatorExpression boe)
{
while (bracket.Kind != ByteCodeIdentifiers.TokenCode.RBracket)
{
ParseStatementExpression();
((IfDeclExpr)expr).AddStatementToCondition(boe, this.BinaryExpression);
bracket = _scanner.GetToken();
}
return bracket;
}
internal ArrayDeclExpr(Token tokenType, Token tokenIdentifier)
: this()
{
this.tokenType = tokenType;
this.tokenIdentifier = tokenIdentifier;
}
internal void PutTokenBack(Token t)
{
_scanPointer -= ((string)t.Value).Length;
}
private Expr ArrayDeclaration(Token tokenType)
{
ArrayDeclExpr ade = null;
Token ident = _scanner.GetToken();
if (ParserContext.Context != ParserContextEnum.FunctionDecl)
{
if (ident.Kind != ByteCodeIdentifiers.TokenCode.Number)
{
throw new NireExecutionException("array declaration did not contain a number");
}
var number = _scanner.GetToken();
if (number.Kind != ByteCodeIdentifiers.TokenCode.Number || number.Kind != ByteCodeIdentifiers.TokenCode.Identifier)
{
throw new NireExecutionException("not a valid array declaration");
}
var rb = _scanner.GetToken();
//rbracket("]", "Not a valid array declaration");
ade = new ArrayDeclExpr(tokenType, ident, Convert.ToInt32(ident.Value));
return ade;
}
ade = new ArrayDeclExpr(tokenType, ident);
return ade;
}
