@Override
public Number measure(final MetricData data, final Def_Function function) {
final Counter c = new Counter(0);
final Module myModule = function.getMyScope().getModuleScope();
function.accept(new ExternalFeatureEnvyDetector(myModule, c));
return c.val();
}
/**
* Does the semantic checking of the type mapping.
*
* @param timestamp the timestamp of the actual semantic check cycle.
*/
public void check(final CompilationTimeStamp timestamp) {
if (lastTimeChecked != null && !lastTimeChecked.isLess(timestamp)) {
return;
}
if (source_type != null) {
source_type.check(timestamp);
}
int nofTargets = mappingTargets.getNofTargets();
boolean hasSliding = false;
boolean hasNonSliding = false;
for (int i = 0, size = nofTargets; i < size; i++) {
TypeMappingTarget target = mappingTargets.getTargetByIndex(i);
target.check(timestamp, source_type);
if (nofTargets > 1) {
switch (target.getTypeMappingType()) {
case DISCARD:
if (hasSliding) {
target
.getLocation()
.reportSemanticError(
"Mapping `discard' cannot be used if functions with `prototype(sliding)' are referred from the same source type");
} else if (i < nofTargets - 1) {
target
.getLocation()
.reportSemanticError(
"Mapping `discard' must be the last target of the source type");
}
break;
case FUNCTION:
{
Def_Function function = ((FunctionTypeMappingTarget) target).getFunction();
Def_Extfunction externalFunction =
((FunctionTypeMappingTarget) target).getExternalFunction();
EncodingPrototype_type prototype = EncodingPrototype_type.NONE;
if (function != null) {
prototype = function.getPrototype();
} else if (externalFunction != null) {
prototype = externalFunction.getPrototype();
} else {
continue;
}
switch (prototype) {
case NONE:
break;
case BACKTRACK:
hasNonSliding = true;
break;
case SLIDING:
hasSliding = true;
break;
default:
if (function != null) {
final String message =
MessageFormat.format(
"The referenced {0} must have the attribute `prototype(backtrack)'' or `prototype(sliding)'' when more than one targets are present",
function.getDescription());
target.getLocation().reportSemanticError(message);
} else if (externalFunction != null) {
final String message =
MessageFormat.format(
"The referenced {0} must have the attribute `prototype(backtrack)'' or `prototype(sliding)'' when more than one targets are present",
externalFunction.getDescription());
target.getLocation().reportSemanticError(message);
}
break;
}
break;
}
case DECODE:
break;
default:
target
.getLocation()
.reportSemanticError(
MessageFormat.format(
"The type of the mapping must be `function', `decode',"
+ " or `discard' instead of {0} when more than one targets are present",
target.getMappingName()));
break;
}
}
}
if (hasSliding && hasNonSliding) {
location.reportSemanticError(
"If one of the mappings refers to a function with attribute `prototype(sliding)'"
+ "then mappings of this source type cannot refer to functions with attribute `prototype(backtrack)'");
}
lastTimeChecked = timestamp;
}