Name Errors/Static/MissingReturn

Synopsis A return statement is missing from a function body.

Description Functions return some value (except functions that have return type void). This error is generated when a function body does not return a value.

Remedies:

• Add a Rascal:Return statement to the function body.
• Rewrite the function so that the function body becomes a single expression and you can use the abbreviated function format, see Rascal:Function.

Examples Here is an incorrect definition of function triple:

rascal>int triple(int x) {
>>>>>>>   x * 3;
>>>>>>>}
int (int): int triple(int);
rascal>triple(5)
|stdin:///|(0,31,<1,0>,<3,1>): Missing return statement

It should look like this:

rascal>int triple(int x) {
>>>>>>>   return x * 3;
>>>>>>>}
int (int): int triple(int);
rascal>triple(5)
int: 15

This is another solution using the abbreviated function format:

rascal>int triple(int x) = x * 3;
int (int): int triple(int);
rascal>triple(5)
int: 15

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