private boolean isStored(String var, List<SimpleAdapter> scopeVariables) {
boolean isStored = false;
// must traverse all variables, because a
// variable may be used in other context!
for (SimpleAdapter adapter : scopeVariables) {
SimpleNode astNode = adapter.getASTNode();
if (astNode instanceof Name) {
Name scopeVar = (Name) astNode;
if (scopeVar.id.equals(var)) {
isStored = (scopeVar.ctx != Name.Load && scopeVar.ctx != Name.AugLoad);
}
} else if (astNode instanceof NameTok) {
NameTok scopeVar = (NameTok) astNode;
if (scopeVar.id.equals(var)) {
isStored = true; // NameTok are always store contexts.
}
} else if (astNode instanceof Import) {
Import importNode = (Import) astNode;
isStored = checkNames(var, importNode.names);
} else if (astNode instanceof ImportFrom) {
ImportFrom importFrom = (ImportFrom) astNode;
isStored = checkNames(var, importFrom.names);
}
if (isStored) {
break;
}
}
return isStored;
}
private void deduceParameters(List<SimpleAdapter> before, List<SimpleAdapter> selected) {
Set<String> globalVariableNames = new HashSet<String>(moduleAdapter.getGlobalVariableNames());
for (SimpleAdapter adapter : before) {
SimpleNode astNode = adapter.getASTNode();
String id;
if (astNode instanceof Name) {
Name variable = (Name) astNode;
id = variable.id;
} else if (astNode instanceof NameTok) {
NameTok variable = (NameTok) astNode;
id = variable.id;
} else {
continue;
}
if (globalVariableNames.contains(id) && !isStored(id, before)) {
// It's a global variable and there's no assignment
// shadowing it in the local scope, so don't add it as a
// parameter.
continue;
}
if (id.equals("True") || id.equals("False") || id.equals("None")) {
// The user most likely doesn't want them to be passed.
continue;
}
if (isUsed(id, selected)) {
if (!parameters.contains(id)) {
parameters.add(id);
}
}
}
}
/** Fix (fabioz): to check if it is used, it must be in a load context */
private boolean isUsed(String var, List<SimpleAdapter> scopeVariables) {
for (SimpleAdapter adapter : scopeVariables) {
SimpleNode astNode = adapter.getASTNode();
if (astNode instanceof Name) {
Name scopeVar = (Name) astNode;
if ((scopeVar.ctx == Name.Load || scopeVar.ctx == Name.AugLoad)
&& scopeVar.id.equals(var)) {
return true;
}
}
// Note: NameTok are always only in store context.
}
return false;
}
private void deduceReturns(List<SimpleAdapter> after, List<SimpleAdapter> selected) {
for (SimpleAdapter adapter : after) {
SimpleNode astNode = adapter.getASTNode();
String id;
if (astNode instanceof Name) {
Name variable = (Name) astNode;
id = variable.id;
} else if (astNode instanceof NameTok) {
NameTok variable = (NameTok) astNode;
id = variable.id;
} else {
continue;
}
if (isStored(id, selected)) {
returns.add(id);
}
}
}