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NumberBuilder refactor

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This commit is contained in:
serso 2016-05-16 20:38:19 +02:00
parent facb255433
commit 9e9d443144
1 changed files with 23 additions and 22 deletions
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45
app/src/main/java/org/solovyev/android/calculator/BaseNumberBuilder.java
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@ -49,45 +49,46 @@ public abstract class BaseNumberBuilder {
/**
* Method determines if we can continue to process current number
*
* @param mathTypeResult current math type result
* @param result current math type result
* @return true if we can continue of processing of current number, if false - new number should be constructed
*/
protected boolean canContinue(@Nonnull MathType.Result mathTypeResult) {
return mathTypeResult.type.getGroupType() == MathType.MathGroupType.number &&
!spaceBefore(mathTypeResult) &&
numeralBaseCheck(mathTypeResult) &&
numeralBaseInTheStart(mathTypeResult.type) || isSignAfterE(mathTypeResult);
protected boolean canContinue(@Nonnull MathType.Result result) {
final boolean number = result.type.getGroupType() == MathType.MathGroupType.number;
return number && !spaceBefore(result) &&
numeralBaseCheck(result) &&
numeralBaseInTheStart(result.type)
|| isSignAfterE(result);
}
private boolean spaceBefore(@Nonnull MathType.Result mathTypeResult) {
return numberBuilder == null && Strings.isNullOrEmpty(mathTypeResult.match.trim());
}
private boolean numeralBaseInTheStart(@Nonnull MathType mathType) {
return mathType != MathType.numeral_base || numberBuilder == null;
private boolean numeralBaseInTheStart(@Nonnull MathType result) {
return result != MathType.numeral_base || numberBuilder == null;
}
private boolean numeralBaseCheck(@Nonnull MathType.Result mathType) {
return mathType.type != MathType.digit || getNumeralBase().getAcceptableCharacters().contains(mathType.match.charAt(0));
private boolean numeralBaseCheck(@Nonnull MathType.Result result) {
return result.type != MathType.digit || getNumeralBase().getAcceptableCharacters().contains(result.match.charAt(0));
}
private boolean isSignAfterE(@Nonnull MathType.Result mathTypeResult) {
if (!isHexMode()) {
final String match = mathTypeResult.match;
if ("−".equals(match) || "-".equals(match) || "+".equals(match)) {
final StringBuilder localNb = numberBuilder;
if (localNb != null && localNb.length() > 0) {
if (localNb.charAt(localNb.length() - 1) == MathType.EXPONENT) {
return true;
}
}
}
}
if (isHexMode()) {
return false;
}
final String match = mathTypeResult.match;
if (!"−".equals(match) && !"-".equals(match) && !"+".equals(match)) {
return false;
}
final StringBuilder nb = numberBuilder;
if (nb == null || nb.length() == 0) {
return false;
}
return nb.charAt(nb.length() - 1) == MathType.EXPONENT;
}
public boolean isHexMode() {
return nb == NumeralBase.hex || (nb == null && engine.getMathEngine().getNumeralBase() == NumeralBase.hex);
return getNumeralBase() == NumeralBase.hex;
}
@Nonnull