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Code Issues Wiki Activity

bug 156137 - Expression Evaluator does not handle %

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This commit is contained in:
Andrew Niefer 2006-09-05 02:03:35 +00:00
parent 354a0a70da
commit 5c49412ff9
2 changed files with 18 additions and 4 deletions
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11
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/scanner2/Scanner2Test.java
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@ -2414,4 +2414,15 @@ public class Scanner2Test extends BaseScanner2Test
initializeScanner(buffer.toString(), ParserLanguage.CPP); initializeScanner(buffer.toString(), ParserLanguage.CPP);
fullyTokenize(); fullyTokenize();
} }
public void testBug156137() throws Exception {
StringBuffer buffer = new StringBuffer();
buffer.append("#if (3 % 2 == 1) \n");
buffer.append("C \n");
buffer.append("#endif \n");
initializeScanner(buffer.toString());
validateIdentifier("C");
validateEOF();
}
} }

11
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/parser/scanner2/BaseScanner.java
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@ -382,7 +382,7 @@ abstract class BaseScanner implements IScanner {
private long multiplicativeExpression() throws EvalException { private long multiplicativeExpression() throws EvalException {
long r1 = unaryExpression(); long r1 = unaryExpression();
for (int t = LA(); t == tMULT || t == tDIV; t = LA()) { for (int t = LA(); t == tMULT || t == tDIV || t == tMOD; t = LA()) {
int position = pos; // for IProblem /0 below, need position int position = pos; // for IProblem /0 below, need position
// before // before
// consume() // consume()
@ -390,9 +390,12 @@ abstract class BaseScanner implements IScanner {
long r2 = unaryExpression(); long r2 = unaryExpression();
if (t == tMULT) if (t == tMULT)
r1 = r1 * r2; r1 = r1 * r2;
else if (r2 != 0)// t == tDIV; else if (r2 != 0) {
r1 = r1 / r2; if (t == tDIV)
else { r1 = r1 / r2;
else
r1 = r1 % r2; //tMOD
} else {
handleProblem(IProblem.SCANNER_DIVIDE_BY_ZERO, position); handleProblem(IProblem.SCANNER_DIVIDE_BY_ZERO, position);
throw new EvalException("Divide by 0 encountered"); //$NON-NLS-1$ throw new EvalException("Divide by 0 encountered"); //$NON-NLS-1$
} }