private void addImport(Tree.ImportMemberOrType member, ImportList il, Import i) {
String alias = i.getAlias();
if (alias != null) {
Map<String, String> mods = unit.getModifiers();
if (mods.containsKey(alias) && mods.get(alias).equals(alias)) {
// spec says you can't hide a language modifier
// unless the modifier itself has an alias
// (this is perhaps a little heavy-handed)
member.addError("import hides a language modifier: '" + alias + "'");
} else {
Import o = unit.getImport(alias);
if (o == null) {
unit.getImports().add(i);
il.getImports().add(i);
} else if (o.isWildcardImport()) {
unit.getImports().remove(o);
il.getImports().remove(o);
unit.getImports().add(i);
il.getImports().add(i);
} else {
member.addError("duplicate import alias: '" + alias + "'");
}
}
}
}
private void addMemberImport(Tree.ImportMemberOrType member, ImportList il, Import i) {
String alias = i.getAlias();
if (alias != null) {
if (il.getImport(alias) == null) {
unit.getImports().add(i);
il.getImports().add(i);
} else {
member.addError("duplicate member import alias: '" + alias + "'");
}
}
}
private void addWildcardImport(ImportList il, Declaration dec, Import i) {
if (notOverloaded(dec)) {
String alias = i.getAlias();
if (alias != null) {
Import o = unit.getImport(dec.getName());
if (o != null && o.isWildcardImport()) {
if (o.getDeclaration().equals(dec) || dec.isNativeHeader()) {
// this case only happens in the IDE,
// due to reuse of the Unit
unit.getImports().remove(o);
il.getImports().remove(o);
} else if (!dec.isNative()) {
i.setAmbiguous(true);
o.setAmbiguous(true);
}
}
unit.getImports().add(i);
il.getImports().add(i);
}
}
}
private boolean checkForHiddenToplevel(Tree.Identifier id, Import i, Tree.Alias alias) {
for (Declaration d : unit.getDeclarations()) {
String n = d.getName();
Declaration idec = i.getDeclaration();
if (d.isToplevel()
&& n != null
&& i.getAlias().equals(n)
&& !idec.equals(d)
&&
// it is legal to import an object declaration
// in the current package without providing an
// alias:
!isLegalAliasFreeImport(d, idec)) {
if (alias == null) {
id.addError("toplevel declaration with this name declared in this unit: '" + n + "'");
} else {
alias.addError("toplevel declaration with this name declared in this unit: '" + n + "'");
}
return true;
}
}
return false;
}