Name Errors/Static/UndeclaredField

Synopsis A field name is used that has not been declared.

Description Fields of Rascal:Tuple (hence also of Rascal:Relation and Rascal:ListRelation) and constructors of Rascal:AlgebraicDataTypes may have names. This error is generated when a reference is made to an undeclared field.

Remedies:

• Fix the field name in the reference.
• Declare a new field as used in the reference.

Examples Use of the undeclared field gender:

rascal>tuple[str name, int age] Jo = <"Jo", 33>;
tuple[str name,int age]: <"Jo",33>
rascal>Jo.gender;
|stdin:///|(0,2,<1,0>,<1,2>): Undeclared field: gender for tuple[str name,int age]

A similar example now expressed as ADT:

rascal>data Person = person(str name, int age);
ok
rascal>jo = person("Jo", 33);
Person: person("Jo",33)
rascal>jo.gender;
|stdin:///|(0,2,<1,0>,<1,2>): Undeclared field: gender for Person

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