Examples with ImportScope org.eclipse.ceylon.model.typechecker.model.ImportScope used on opensource projects

Example 1 with ImportScope

use of org.eclipse.ceylon.model.typechecker.model.ImportScope in project ceylon by eclipse.

the class ImportVisitor method checkForHiddenToplevel.

private boolean checkForHiddenToplevel(Tree.Identifier id, Import i, Tree.Alias alias, ImportList il) {
    ImportScope scope = getImportScope(il);
    for (Declaration d : scope.getMembers()) {
        String n = d.getName();
        Declaration idec = i.getDeclaration();
        if (n != null && i.getAlias().equals(n) && !idec.equals(d) && // alias:
        !isLegalAliasFreeImport(d, idec)) {
            String qn = d.getQualifiedNameString();
            String message = scope instanceof Unit ? "toplevel declaration with this name declared in this unit" : "declaration with this name declared in this scope";
            if (alias == null) {
                String iqn = idec.getQualifiedNameString();
                id.addError(message + ": imported '" + iqn + "' would hide '" + qn + "' (add an alias to the import)");
            } else {
                alias.addError(message + ": imported '" + n + "' would hide '" + qn + "' (choose a different alias for the import)");
            }
            return true;
        }
    }
    return false;
}

Example 2 with ImportScope

use of org.eclipse.ceylon.model.typechecker.model.ImportScope in project ceylon by eclipse.

the class ImportVisitor method addWildcardImport.

private void addWildcardImport(ImportList il, Declaration dec, Import i) {
    if (notOverloaded(dec)) {
        String alias = i.getAlias();
        if (alias != null) {
            ImportScope scope = getImportScope(il);
            Import o = scope.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
                    scope.removeImport(o);
                    il.getImports().remove(o);
                } else if (!dec.isNative()) {
                    i.setAmbiguous(true);
                    o.setAmbiguous(true);
                }
            }
            scope.addImport(i);
            il.getImports().add(i);
        }
    }
}

Example 3 with ImportScope

use of org.eclipse.ceylon.model.typechecker.model.ImportScope in project ceylon by eclipse.

the class ImportVisitor method addImport.

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)
            // instead, it should be a warning
            member.addUsageWarning(Warning.hidesLanguageModifier, "import hides a language modifier: '" + alias + "' is a language modifier");
        } else {
            ImportScope scope = getImportScope(il);
            Import o = scope.getImport(alias);
            if (o == null) {
                scope.addImport(i);
                il.getImports().add(i);
            } else if (o.isWildcardImport()) {
                scope.removeImport(o);
                il.getImports().remove(o);
                scope.addImport(i);
                il.getImports().add(i);
            } else {
                member.addError("duplicate import alias: '" + alias + "' is already used");
            }
        }
    }
}