public Node ElseIfList()
{
var elseIfList = new ElseIfList();
while (CurrentToken == TokenCategory.ELSE)
{
var elseToken = Expect(TokenCategory.ELSE);
if (CurrentToken == TokenCategory.IF)
{
elseIfList.Add(ElseIf(elseToken));
}
else if (CurrentToken == TokenCategory.BRACKETS_OPEN)
{
elseIfList.Add(Else(elseToken));
}
}
return(elseIfList);
}
public Node If()
{
var n1 = new If();
n1.AnchorToken = Expect(TokenType.IF);
Expect(TokenType.PARENTHESIS_OPEN);
n1.Add(Expression());
Expect(TokenType.PARENTHESIS_CLOSE);
Expect(TokenType.BLOCK_BEGIN);
var n2 = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
n2.Add(Statement());
}
n1.Add(n2);
var n3 = new ElseIfList();
Expect(TokenType.BLOCK_END);
while (CurrentToken == TokenType.ELSEIF)
{
var nelsif = new ElseIf();
nelsif.AnchorToken = Expect(TokenType.ELSEIF);
Expect(TokenType.PARENTHESIS_OPEN);
nelsif.Add(Expression());
Expect(TokenType.PARENTHESIS_CLOSE);
Expect(TokenType.BLOCK_BEGIN);
var stmtList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
stmtList.Add(Statement());
}
nelsif.Add(stmtList);
n3.Add(nelsif);
Expect(TokenType.BLOCK_END);
}
n1.Add(n3);
var els = new Else();
if (CurrentToken == TokenType.ELSE)
{
els.AnchorToken = Expect(TokenType.ELSE);
Expect(TokenType.BLOCK_BEGIN);
var stmtList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
stmtList.Add(Statement());
}
els.Add(stmtList);
Expect(TokenType.BLOCK_END);
}
n1.Add(els);
return(n1);
}
//If side function//
public Node If()
{
var result = new If()
{
AnchorToken = Expect(TokenCategory.IF)
};
Expect(TokenCategory.PARENTHESIS_OPEN);
result.Add(Expression());
Expect(TokenCategory.PARENTHESIS_CLOSE);
Expect(TokenCategory.CURLY_BRACKET_OPEN);
result.Add(StmtList());
Expect(TokenCategory.CURLY_BRACKET_CLOSE);
var elseIfListr = new ElseIfList();
while (elsif.Contains(CurrentToken))
{
elseIfListr.Add(elseif());
}
result.Add(elseIfListr);
var elser = new Else();
if (CurrentToken == TokenCategory.ELSE)
{
elser = new Else()
{
AnchorToken = Expect(TokenCategory.ELSE)
};
Expect(TokenCategory.CURLY_BRACKET_OPEN);
elser.Add(StmtList());
Expect(TokenCategory.CURLY_BRACKET_CLOSE);
}
result.Add(elser);
return(result);
}
public Node ElseIf()
{
var node = new ElseIfList();
while (CurrentToken == TokenCategory.ELSEIF)
{
var node_elseif = new ElseIf();
Expect(TokenCategory.ELSEIF);
Expect(TokenCategory.OPENEDPAR);
node_elseif.Add(Expr());
Expect(TokenCategory.CLOSEDPAR);
Expect(TokenCategory.OPENEDCURLY);
node_elseif.Add(StmtList());
Expect(TokenCategory.CLOSEDCURLY);
node.Add(node_elseif);
}
return(node);
}
public Node ElseIf()
{
//elseif(‹expr›){‹stmt-list›} *
var n = new ElseIfList();
while (CurrentToken == TokenCategory.ELSEIF)
{
var n1 = new ElseIf();
Expect(TokenCategory.ELSEIF);
Expect(TokenCategory.OPENEDPAR);
n1.Add(Expr());
Expect(TokenCategory.CLOSEDPAR);
Expect(TokenCategory.OPENEDCURLY);
n1.Add(StmtList());
Expect(TokenCategory.CLOSEDCURLY);
n.Add(n1);
}
return(n);
}
public Node ElseIfList()
{
var elseIfList = new ElseIfList();
while (Current == TokenCategory.ELSEIF)
{
var elseIf = new ElseIf()
{
AnchorToken = Expect(TokenCategory.ELSEIF)
};
Expect(TokenCategory.OPEN_PARENTHESIS);
elseIf.Add(Expr());
Expect(TokenCategory.CLOSE_PARENTHESIS);
Expect(TokenCategory.OPEN_BRACKET);
elseIf.Add(StmtList());
Expect(TokenCategory.CLOSE_BRACKET);
elseIfList.Add(elseIf);
}
return(elseIfList);
}
public Node ElseIfList()
{
var result = new ElseIfList();
while (CurrentToken == TokenCategory.ELIF)
{
var elifNode = new ElseIf();
var elif = Expect(TokenCategory.ELIF);
Expect(TokenCategory.PARENTHESIS_OPEN);
var expr = Expression();
elifNode.Add(expr);
Expect(TokenCategory.PARENTHESIS_CLOSE);
Expect(TokenCategory.BRACKET_OPEN);
var stmtList = StmtList();
elifNode.Add(stmtList);
Expect(TokenCategory.BRACKET_CLOSE);
elifNode.AnchorToken = elif;
result.Add(elifNode);
}
return(result);
}
public Node If()
{
var result = new If()
{
AnchorToken = Expect(TokenCategory.IF)
};
result.Add(Expression());
Expect(TokenCategory.THEN);
if (firstOfStatement.Contains(CurrentToken))
{
var statementList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
statementList.Add(Statement());
}
result.Add(statementList);
}
var elseIfList = new ElseIfList();
if (CurrentToken == TokenCategory.ELSEIF)
{
while (CurrentToken == TokenCategory.ELSEIF)
{
var elseIf = new ElseIf()
{
AnchorToken = Expect(TokenCategory.ELSEIF)
};
elseIf.Add(Expression());
Expect(TokenCategory.THEN);
if (firstOfStatement.Contains(CurrentToken))
{
var statementList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
statementList.Add(Statement());
}
elseIf.Add(statementList);
}
elseIfList.Add(elseIf);
}
}
result.Add(elseIfList);
var els = new Else();
if (CurrentToken == TokenCategory.ELSE)
{
els.AnchorToken = Expect(TokenCategory.ELSE);
if (firstOfStatement.Contains(CurrentToken))
{
var statementList = new StatementList();
while (firstOfStatement.Contains(CurrentToken))
{
statementList.Add(Statement());
}
els.Add(statementList);
}
}
result.Add(els);
Expect(TokenCategory.END);
Expect(TokenCategory.SEMICOLON);
return(result);
}