public Node ParameterDeclaration()
{
var result = new ParameterDeclaration();
var identifierList = new IdentifierList()
{
new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
}
};
result.Add(identifierList);
while (CurrentToken == TokenCategory.COMA)
{
Expect(TokenCategory.COMA);
identifierList.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
}
Expect(TokenCategory.COLON);
result.Add(Type());
Expect(TokenCategory.SEMICOLON);
return(result);
}
public Node ParamDeclaration()
{
var result = new ParamDeclaration();
var idList = new IdentifierList();
idList.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
while (CurrentToken != TokenCategory.TWOPOINTS)
{
Expect(TokenCategory.COMA);
idList.Add(new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
});
}
result.Add(idList);
Expect(TokenCategory.TWOPOINTS);
result.Add(ChimeraType());
Expect(TokenCategory.SEMICOL);
return(result);
}
Lexem Identifier(ref int row, string substring)
{
Idnt tempIdnt = IdentifierList.Find(x => x.Name == substring);
if (tempIdnt != null)
{
LexemList.Add(new Lexem(row, tempIdnt.Name, 34, indexIdnt: tempIdnt.Index)); return(null);
}
else
{
if (LexemList.Count == 0)
{
throw new Exception("Identifier can`t be first");
}
Lexem temp = LexemList.Last <Lexem>();
if (temp.Code == 30)
{
IdentifierList.Add(new Idnt(substring, IdentifierList.Count, "int"));
}
else if (temp.Code == 31)
{
IdentifierList.Add(new Idnt(substring, IdentifierList.Count, "float"));
}
else if (temp.Code == 0)
{
IdentifierList.Add(new Idnt(substring, IdentifierList.Count, "program"));
}
else
{
throw new Exception($"Opps,I see a problem.Maybe you forgot about type 'int', 'float'or 'program' type in row {row} near '{substring}'");
}
}
LexemList.Add(new Lexem(row, substring, 34, indexIdnt: IdentifierList.Count - 1));
return(null);
}
private void ParserLine(List <LexicalUnit> lexUnitInRowList)
{
int tempInt;
float tempFloat;
foreach (var unit in lexUnitInRowList)
{
//if we have this lexem in reserved lexem
tempInt = Check.IsReservedLexem(unit.Substring);
if (tempInt >= 0)
{
LexemList.Add(new Lexem(unit.Row, unit.Substring, tempInt));
continue;
}
//if this lexem is a constant
if (float.TryParse(unit.Substring.Replace('.', ','), out tempFloat))
{
if (int.TryParse(unit.Substring, out tempInt))
{
var const_ = ConstantList.Find(x => x._Const == tempInt);
if (const_ != null)
{
LexemList.Add(new Lexem(unit.Row, unit.Substring, 38, indexConst: const_.Index));
}
else
{
ConstantList.Add(new Const(tempInt, ConstantList.Count, "int"));
LexemList.Add(new Lexem(unit.Row, unit.Substring, 38, indexConst: ConstantList.Count - 1));
}
}
else
{
var const_ = ConstantList.Find(x => x._Const == tempInt);
if (const_ != null)
{
LexemList.Add(new Lexem(unit.Row, unit.Substring, 38, indexConst: const_.Index));
}
else
{
ConstantList.Add(new Const(tempInt, ConstantList.Count, "float"));
LexemList.Add(new Lexem(unit.Row, unit.Substring, 38, indexConst: ConstantList.Count - 1));
}
}
continue;
}
//if this lexem is a idnt;
Idnt tempIdnt = IdentifierList.Find(x => x.Name == unit.Substring);
if (tempIdnt != null)
{
LexemList.Add(new Lexem(unit.Row, tempIdnt.Name, 35, indexIdnt: tempIdnt.Index));
}
else
{
if (lexUnitInRowList.Exists(x => (x.Substring.Contains("float"))) &&
(lexUnitInRowList.Exists(x => x.Substring.Contains("="))))
{
IdentifierList.Add(new Idnt(unit.Substring, IdentifierList.Count, "float"));
LexemList.Add(new Lexem(unit.Row, unit.Substring, 35, indexIdnt: IdentifierList.Count - 1));
}
else if (lexUnitInRowList.Exists(x => (x.Substring.Contains("int"))) &&
(lexUnitInRowList.Exists(x => x.Substring.Contains("="))))
{
IdentifierList.Add(new Idnt(unit.Substring, IdentifierList.Count, "int"));
LexemList.Add(new Lexem(unit.Row, unit.Substring, 35, indexIdnt: IdentifierList.Count - 1));
}
else if ((lexUnitInRowList.Exists(x => x.Substring.Contains("program"))))
{
IdentifierList.Add(new Idnt(unit.Substring, IdentifierList.Count, "program"));
LexemList.Add(new Lexem(unit.Row, unit.Substring, 35, indexIdnt: IdentifierList.Count - 1));
}
else
{
throw new Exception($"not defined variable {unit.Substring} ");
}
}
}
}
