DanilaFe
/
Abacus
mirror of https://github.com/DanilaFe/abacus
1
0
Fork 0
Code Issues Releases Wiki Activity

Change function to return null on error, and change arity checks.

This commit is contained in:
Danila Fedorin 2017-07-24 14:03:55 -07:00
parent dff4c99126
commit 8a3e5cc5c7
1 changed files with 4 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/org/nwapw/abacus/number/Function.java
View File

@ -2,14 +2,11 @@ package org.nwapw.abacus.number;
public abstract class Function {
public int arity;
protected abstract boolean matchesParams(Number[] params);
protected abstract Number applyInternal(Number[] params);
protected abstract Number applyInternal(Number...params);
public Number apply(Number...params) throws IllegalArgumentException {
if(params.length != arity)
throw new IllegalArgumentException("Invalid number of arguments: Function takes "
+ arity + ", " + params.length + " provided.");
public Number apply(Number...params) {
if(!matchesParams(params)) return null;
return applyInternal(params);
}