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Better support for number ranges, still not perfect

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This commit is contained in:
Andrey Breslav
2011-04-07 18:30:18 +04:00
parent 53e4c863e7
commit fde6a6f60f
2 changed files with 32 additions and 10 deletions
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idea/src/org/jetbrains/jet/lang/psi/JetConstantExpression.java
+27 -9
View File
@@ -23,18 +23,23 @@ public class JetConstantExpression extends JetExpression {
String nodeText = getNode().getText();
if (elementType == JetNodeTypes.INTEGER_CONSTANT) {
if (nodeText.startsWith("0x") || nodeText.startsWith("0X")) {
String hexString = nodeText.substring(2);
long longValue = Long.parseLong(hexString, 16);
if (Integer.MIN_VALUE <= longValue && longValue <= Integer.MAX_VALUE) {
return (int) longValue;
try {
if (nodeText.startsWith("0x") || nodeText.startsWith("0X")) {
String hexString = nodeText.substring(2);
int length = hexString.length();
if (length > 8) {
return Long.parseLong(hexString);
}
return getRangedValue(Long.parseLong(hexString, 16));
}
return longValue;
if (nodeText.startsWith("0b") || nodeText.startsWith("0B")) {
return getRangedValue(Long.parseLong(nodeText.substring(2), 2));
}
return getRangedValue(Long.parseLong(nodeText));
}
if (nodeText.startsWith("0b") || nodeText.startsWith("0B")) {
return Integer.parseInt(nodeText.substring(2), 2);
catch (NumberFormatException e) {
return null;
}
return Integer.parseInt(nodeText);
}
else if (elementType == JetNodeTypes.LONG_CONSTANT) {
if (nodeText.endsWith("l") || nodeText.endsWith("L")) {
@@ -73,4 +78,17 @@ public class JetConstantExpression extends JetExpression {
throw new IllegalArgumentException("Unsupported constant: " + this);
}
}
private Object getRangedValue(long longValue) {
if (Byte.MIN_VALUE <= longValue && longValue <= Byte.MAX_VALUE) {
return (byte) longValue;
}
if (Short.MIN_VALUE <= longValue && longValue <= Short.MAX_VALUE) {
return (short) longValue;
}
if (Integer.MIN_VALUE <= longValue && longValue <= Integer.MAX_VALUE) {
return (int) longValue;
}
return longValue;
}
}
idea/src/org/jetbrains/jet/lang/types/JetTypeInferrer.java
+5 -1
View File
@@ -502,7 +502,11 @@ public class JetTypeInferrer {
IElementType elementType = expression.getNode().getElementType();
JetStandardLibrary standardLibrary = semanticServices.getStandardLibrary();
if (elementType == JetNodeTypes.INTEGER_CONSTANT) {
if (expression.getValue() instanceof Long) {
Object value = expression.getValue();
if (value == null) {
semanticServices.getErrorHandler().genericError(expression.getNode(), "Number is of range for Long");
}
else if (value instanceof Long) {
result = standardLibrary.getLongType();
}
else {