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change CPPSemantics.lookupInParents to use new name caching mechanism

Browse source 
and to support prefix lookup
This commit is contained in:
Andrew Niefer 2005-03-03 23:53:46 +00:00
parent 27c8ac0ac3
commit d7ad9aef13
2 changed files with 119 additions and 60 deletions
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2
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPClassScope.java
View file

@ -191,6 +191,8 @@ public class CPPClassScope extends CPPScope implements ICPPClassScope {
IASTName [] ns = ((ICPPASTQualifiedName)node).getNames();
if( ns[ ns.length - 1 ] == name )
node = node.getParent();
else
return false;
}
if( node instanceof IASTDeclSpecifier ){
IASTNode parent = node.getParent();

177
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
View file

@ -587,38 +587,57 @@ public class CPPSemantics {
data.foundItems = ArrayUtil.addAll( Object.class, (Object[])data.foundItems, (Object[])results );
}
} else {
Object [] objs = (Object[]) results;
CharArrayObjectMap resultMap = (CharArrayObjectMap) data.foundItems;
if( objs != null ) {
for( int i = 0; i < objs.length && objs[i] != null; i++ ){
char [] n = null;
if( objs[i] instanceof IBinding )
n = ((IBinding)objs[i]).getNameCharArray();
else
n = ((IASTName)objs[i]).toCharArray();
if( !resultMap.containsKey( n ) ){
resultMap.put( n, objs[i] );
} else if( !scoped ) {
Object obj = resultMap.get( n );
if( obj instanceof Object [] ) {
if( objs[i] instanceof IBinding )
obj = ArrayUtil.append( Object.class, (Object[]) obj, objs[i] );
else
obj = ArrayUtil.addAll( Object.class, (Object[])obj, (Object[]) objs[i] );
} else {
if( objs[i] instanceof IBinding )
obj = new Object [] { obj, objs[i] };
else {
Object [] temp = new Object [ ((Object[])objs[i]).length + 1 ];
temp[0] = obj;
obj = ArrayUtil.addAll( Object.class, temp, (Object[]) objs[i] );
}
}
}
}
}
data.foundItems = mergePrefixResults( (CharArrayObjectMap) data.foundItems, results, scoped );
}
}
/**
* @param dest
* @param source : either Object[] or CharArrayObjectMap
* @param scoped
* @return
*/
private static Object mergePrefixResults( CharArrayObjectMap dest, Object source, boolean scoped ){
if( source == null ) return dest;
CharArrayObjectMap resultMap = ( dest != null ) ? dest : new CharArrayObjectMap(2);
CharArrayObjectMap map = null;
Object [] objs = null;
if( source instanceof CharArrayObjectMap )
map = (CharArrayObjectMap) source;
else
objs = ArrayUtil.trim( Object.class, (Object[]) source );
int size = map != null ? map.size() : objs.length;
for( int i = 0; i < size; i ++ ) {
char [] key = ( map != null ) ? map.keyAt(i)
: ( objs[i] instanceof IBinding) ? ((IBinding)objs[i]).getNameCharArray()
: ((IASTName)objs[i]).toCharArray();
if( !resultMap.containsKey( key ) ){
resultMap.put( key, (map != null ) ? map.get( key ) : objs[i] );
} else if( !scoped ) {
Object obj = resultMap.get( key );
Object so = ( map != null ) ? map.get(key) : objs[i];
if( obj instanceof Object [] ) {
if( so instanceof IBinding )
obj = ArrayUtil.append( Object.class, (Object[]) obj, so );
else
obj = ArrayUtil.addAll( Object.class, (Object[])obj, (Object[]) so );
} else {
if( so instanceof IBinding )
obj = new Object [] { obj, so };
else {
Object [] temp = new Object [ ((Object[])so).length + 1 ];
temp[0] = obj;
obj = ArrayUtil.addAll( Object.class, temp, (Object[]) so );
}
}
}
}
return resultMap;
}
static private void lookup( CPPSemantics.LookupData data, Object start ) throws DOMException{
IASTNode node = data.astName;
@ -700,12 +719,12 @@ public class CPPSemantics {
}
}
private static IASTName[] lookupInParents( CPPSemantics.LookupData data, ICPPClassScope lookIn ) throws DOMException{
private static Object lookupInParents( CPPSemantics.LookupData data, ICPPClassScope lookIn ) throws DOMException{
ICPPASTCompositeTypeSpecifier compositeTypeSpec = (ICPPASTCompositeTypeSpecifier) lookIn.getPhysicalNode();
ICPPASTBaseSpecifier [] bases = compositeTypeSpec.getBaseSpecifiers();
IASTName[] inherited = null;
IASTName[] result = null;
Object inherited = null;
Object result = null;
if( bases.length == 0 )
return null;
@ -719,6 +738,7 @@ public class CPPSemantics {
int size = bases.length;
for( int i = 0; i < size; i++ )
{
inherited = null;
ICPPClassType cls = null;
IBinding binding = bases[i].getName().resolveBinding();
while( binding instanceof ITypedef && ((ITypedef)binding).getType() instanceof IBinding ){
@ -744,10 +764,19 @@ public class CPPSemantics {
//is circular inheritance
if( ! data.inheritanceChain.containsKey( parent ) ){
//is this name define in this scope?
inherited = lookupInScope( data, parent, null, null );
if( !data.prefixLookup && parent.isFullyCached() )
inherited = parent.getBinding( data.astName, true );
else
inherited = lookupInScope( data, parent, null, null );
if( inherited == null || inherited.length == 0 ){
inherited = lookupInParents( data, parent );
if( inherited == null || data.prefixLookup ){
Object temp = lookupInParents( data, parent );
if( inherited != null ){
inherited = mergePrefixResults( null, inherited, true );
inherited = mergePrefixResults( (CharArrayObjectMap)inherited, (CharArrayObjectMap)temp, true );
} else {
inherited = temp;
}
} else {
visitVirtualBaseClasses( data, cls );
}
@ -757,20 +786,40 @@ public class CPPSemantics {
}
}
if( inherited != null && inherited.length != 0 ){
if( result == null || result.length == 0 ){
if( inherited != null ){
if( result == null ){
result = inherited;
} else if ( inherited != null && inherited.length != 0 ) {
for( int j = 0; j < result.length && result[j] != null; j++ ) {
IASTName n = result[j];
if( checkAmbiguity( n, inherited ) ){
data.problem = new ProblemBinding( IProblemBinding.SEMANTIC_AMBIGUOUS_LOOKUP, n.toCharArray() );
return null;
} else if ( inherited != null ) {
if( !data.prefixLookup ) {
if( result instanceof Object [] ){
Object [] r = (Object[]) result;
for( int j = 0; j < r.length && r[j] != null; j++ ) {
if( checkForAmbiguity( r[j], inherited ) ){
data.problem = new ProblemBinding( IProblemBinding.SEMANTIC_AMBIGUOUS_LOOKUP, data.name );
return null;
}
}
} else {
if( checkForAmbiguity( result, inherited ) ){
data.problem = new ProblemBinding( IProblemBinding.SEMANTIC_AMBIGUOUS_LOOKUP, data.name );
return null;
}
}
} else {
CharArrayObjectMap temp = (CharArrayObjectMap) inherited;
CharArrayObjectMap r = (CharArrayObjectMap) result;
char[] key = null;
int tempSize = temp.size();
for( int ii = 0; ii < tempSize; ii++ ){
key = temp.keyAt( ii );
if( !r.containsKey( key ) ){
r.put( key, temp.get(key) );
} else {
//TODO: prefixLookup ambiguity checking
}
}
}
}
} else {
inherited = null; //reset temp for next iteration
}
}
@ -799,26 +848,34 @@ public class CPPSemantics {
}
}
}
private static boolean checkAmbiguity( IASTName n, IASTName []names ) throws DOMException{
names = (IASTName[]) ArrayUtil.trim( IASTName.class, names );
if( names.length == 0 )
return false;
private static boolean checkForAmbiguity( Object n, Object names ) throws DOMException{
if( names instanceof Object[] ) {
names = ArrayUtil.trim( Object.class, (Object[]) names );
if( ((Object[])names).length == 0 )
return false;
}
//it is not ambiguous if they are the same thing and it is static or an enumerator
IBinding binding = n.resolveBinding();
for( int i = 0; i < names.length && names[i] != null; i++ ){
IBinding b = names[i].resolveBinding();
IBinding binding = ( n instanceof IBinding) ? (IBinding)n : ((IASTName)n).resolveBinding();
Object [] objs = ( names instanceof Object[] ) ? (Object[])names : null;
int idx = ( objs != null && objs.length > 0 ) ? 0 : -1;
Object o = ( idx != -1 ) ? objs[idx++] : names;
while( o != null ) {
IBinding b = ( o instanceof IBinding ) ? (IBinding) o : ((IASTName)o).resolveBinding();
if( binding != b )
return true;
if( binding instanceof IEnumerator )
continue;
else if( (binding instanceof IFunction && ((IFunction)binding).isStatic()) ||
(binding instanceof IVariable && ((IVariable)binding).isStatic()) )
continue;
if( !(binding instanceof IEnumerator) &&
!( (binding instanceof IFunction && ((IFunction)binding).isStatic()) ||
(binding instanceof IVariable && ((IVariable)binding).isStatic()) ) )
{
return true;
}
return true;
if( idx > -1 && idx < objs.length )
o = objs[idx++];
else
o = null;
}
return false;
}