io.spine.js.generate.field.precondition

Interface FieldPrecondition

public interface FieldPrecondition

The generator of the code which performs various checks on the proto field value.

API Note:

The descendants are supposed to operate on the provided CodeLines, so the interface methods are not returning any generated code.

Method Summary

Modifier and Type	Method and Description
void	exitNullCheck() Generates the code to exit the null check block and return to the upper level.
void	performNullCheck(java.lang.String value, java.lang.String mergeFieldFormat) Generates the code which checks the given field value for null.

Method Detail

performNullCheck

void performNullCheck(java.lang.String value,
                      java.lang.String mergeFieldFormat)

Generates the code which checks the given field value for null.

The merge field format is specified so the precondition can interact with the field itself in case the check passes/fails.

Parameters:

value - the name of the variable representing the field value to check

mergeFieldFormat - the code that sets/adds value to the field

exitNullCheck

void exitNullCheck()

Generates the code to exit the null check block and return to the upper level.