internal AssignmentStatement(ContextScope scope, Lexer lexer) : base(scope, lexer)
{
// VARIABLE = EXPR;
// VARIABLE += EXPR;
// VARIABLE -= EXPR;
// VARIABLE *= EXPR;
// VARIABLE /= EXPR;
// VARIABLE %= EXPR;
// VARIABLE &= EXPR;
// VARIABLE |= EXPR;
// TO DO: VARIABLE++/--;
// or
// EXPR;
_scope = scope;
switch (lexer.TokenType)
{
case TokenEnum.VARIABLE:
{
if (Parser.TypeTokens[lexer.TokenContents] != null)
{
DeclVariable d = new DeclVariable(scope, lexer);
_varExpr = d;
_varName = d.varName;
}
else
{
_varName = lexer.TokenContents;
_varExpr = new IndexedExpression(scope, lexer).Get();
}
_assigntype = lexer.TokenType;
if (_assigntype == TokenEnum.ASSIGN ||
_assigntype == TokenEnum.PLUSASSIGN ||
_assigntype == TokenEnum.MINUSASSIGN ||
_assigntype == TokenEnum.ASTERISKASSIGN ||
_assigntype == TokenEnum.SLASHASSIGN ||
_assigntype == TokenEnum.PERCENTASSIGN ||
_assigntype == TokenEnum.AMPASSIGN ||
_assigntype == TokenEnum.PIPEASSIGN
)
{
lexer.Next(); //ASSIGN
_value = new Expression(scope, lexer).Get();
}
else
{
_assigntype = TokenEnum.NOTHING;
}
}
break;
default:
{
_assigntype = TokenEnum.NOTHING;
_value = new Expression(scope, lexer).Get();
}
break;
}
}
internal ForEachStatement(ContextScope scope, Lexer lexer) : base(scope, lexer)
{
// FOREACH ( DECL VAR IN EXPR ) STATEMENT
// FOREACH ( DECL VAR IN EXPR ) { STATEMENT STATEMENT STATEMENT ... }
// or
// ASSIGNMENTEXPR
if (lexer.TokenType == TokenEnum.FOREACH)
{
lexer.Next(); //FOREACH
if (lexer.TokenType != TokenEnum.BRACKETOPEN)
{
throw new ParseException(lexer, TokenEnum.BRACKETOPEN);
}
lexer.Next(); //BRACKETOPEN
_scope = scope.Next;
_var = new DeclVariable(_scope, lexer);
if (lexer.TokenType != TokenEnum.IN)
{
throw new ParseException(lexer, TokenEnum.IN);
}
lexer.Next(); //IN
_enumerable = new Expression(_scope, lexer).Get();
if (lexer.TokenType != TokenEnum.BRACKETCLOSE)
{
throw new ParseException(lexer, TokenEnum.BRACKETCLOSE);
}
lexer.Next(); //BRACKETCLOSE
if (lexer.TokenType == TokenEnum.BRACEOPEN)
{
lexer.Next(); //BRACEOPEN
while (lexer.TokenType != TokenEnum.BRACECLOSE)
{
_actions.Add(new Statement(_scope, lexer).Get());
}
lexer.Next(); //BRACECLOSE
}
else
{
_actions.Add(new Statement(scope, lexer).Get());
}
}
else
{
_actions.Add(GetNext(scope, lexer));
}
}
