mirrors/cdt
1
0
Fork 0
mirror of https://github.com/eclipse-cdt/cdt synced 2025-04-29 19:45:01 +02:00
Code Issues Wiki Activity

Bug 295851: Evaluation of constant conditional expressions.

Browse source
This commit is contained in:
Markus Schorn 2009-11-24 18:32:52 +00:00
parent 3d3b6c4b4c
commit e33998eb20
2 changed files with 39 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

27
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2Tests.java
View file

@ -33,6 +33,7 @@ import org.eclipse.cdt.core.dom.ast.IASTDeclarationStatement;
import org.eclipse.cdt.core.dom.ast.IASTDeclarator;
import org.eclipse.cdt.core.dom.ast.IASTDoStatement;
import org.eclipse.cdt.core.dom.ast.IASTElaboratedTypeSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTEnumerationSpecifier;
import org.eclipse.cdt.core.dom.ast.IASTExpression;
import org.eclipse.cdt.core.dom.ast.IASTExpressionList;
import org.eclipse.cdt.core.dom.ast.IASTExpressionStatement;
@ -7036,6 +7037,32 @@ public class AST2Tests extends AST2BaseTest {
assertTrue(((IFunction)n.resolveBinding()).getType().getParameterTypes()[0] instanceof IPointerType);
}
}
//
// /* check that enumerator values are evaluated correctly for
// * conditional expressions */
//
//enum
//{
// _ISalnum = 11 < 8 ? 1 : 2,
// _ISalnum2 = 11 > 8 ? 1 : 2
//};
//
public void testBug295851() throws Exception {
for(ParserLanguage lang : ParserLanguage.values()) {
IASTTranslationUnit tu = parseAndCheckBindings(getAboveComment(), lang);
IASTEnumerationSpecifier enumSpec = (IASTEnumerationSpecifier)((IASTSimpleDeclaration)tu.getDeclarations()[0]).getDeclSpecifier();
IEnumerator enumeratorBinding = (IEnumerator)enumSpec.getEnumerators()[0].getName().resolveBinding();
IValue value = enumeratorBinding.getValue();
assertEquals( 2, value.numericalValue().longValue());
IEnumerator enumeratorBinding2 = (IEnumerator)enumSpec.getEnumerators()[1].getName().resolveBinding();
IValue value2 = enumeratorBinding2.getValue();
assertEquals( 1, value2.numericalValue().longValue());
}
}
//
// extern void goo();
// struct MyStruct {

24
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/Value.java
View file

@ -316,8 +316,8 @@ public class Value implements IValue {
if (e instanceof IASTConditionalExpression) {
IASTConditionalExpression cexpr= (IASTConditionalExpression) e;
Object o= evaluate(cexpr.getLogicalConditionExpression(), unknownSigs, unknowns, maxdepth);
if (o instanceof Long) {
Long v= (Long) o;
if (o instanceof Number) {
Number v= (Number) o;
if (v.longValue() == 0) {
return evaluate(cexpr.getNegativeResultExpression(), unknownSigs, unknowns, maxdepth);
}
@ -330,7 +330,7 @@ public class Value implements IValue {
final IASTExpression pe = cexpr.getPositiveResultExpression();
Object po= pe == null ? o : evaluate(pe, unknownSigs, unknowns, maxdepth);
Object neg= evaluate(cexpr.getNegativeResultExpression(), unknownSigs, unknowns, maxdepth);
return CONDITIONAL_CHAR + SEPARATOR + o.toString() + SEPARATOR + po.toString() + SEPARATOR + neg.toString();
return "" + CONDITIONAL_CHAR + SEPARATOR + o.toString() + SEPARATOR + po.toString() + SEPARATOR + neg.toString(); //$NON-NLS-1$
}
if (e instanceof IASTIdExpression) {
IBinding b= ((IASTIdExpression) e).getName().resolvePreBinding();
@ -462,8 +462,8 @@ public class Value implements IValue {
return value;
}
if (value instanceof Long) {
long v= (Long) value;
if (value instanceof Number) {
long v= ((Number) value).longValue();
switch(unaryOp) {
case IASTUnaryExpression.op_prefixIncr:
case IASTUnaryExpression.op_postFixIncr:
@ -504,9 +504,9 @@ public class Value implements IValue {
}
private static Object combineBinary(final int op, final Object o1, final Object o2) throws UnknownValueException {
if (o1 instanceof Long && o2 instanceof Long) {
long v1= (Long) o1;
long v2= (Long) o2;
if (o1 instanceof Number && o2 instanceof Number) {
long v1= ((Number) o1).longValue();
long v2= ((Number) o2).longValue();
switch(op) {
case IASTBinaryExpression.op_multiply:
return v1*v2;
@ -601,8 +601,8 @@ public class Value implements IValue {
if (reeval.pos != reeval.fExpression.length)
return UNKNOWN;
if (obj instanceof Long)
return create(((Long) obj).longValue());
if (obj instanceof Number)
return create(((Number) obj).longValue());
ICPPUnknownBinding[] ua;
if (unknown.isEmpty()) {
@ -645,8 +645,8 @@ public class Value implements IValue {
Object cond= reevaluate(reeval, maxdepth);
Object po= reevaluate(reeval, maxdepth);
Object neg= reevaluate(reeval, maxdepth);
if (cond instanceof Long) {
Long v= (Long) cond;
if (cond instanceof Number) {
Number v= (Number) cond;
if (v.longValue() == 0) {
return neg;
}