private static List<GrStatement> generateVarDeclarations(
List<VariableInfo> varInfos, Project project, @Nullable GrExpression initializer) {
List<GrStatement> result = new ArrayList<GrStatement>();
if (varInfos.size() == 0) return result;
GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(project);
boolean distinctDeclaration = haveDifferentTypes(varInfos);
if (distinctDeclaration) {
for (VariableInfo info : varInfos) {
result.add(
factory.createVariableDeclaration(
ArrayUtil.EMPTY_STRING_ARRAY, null, info.getType(), info.getName()));
}
} else {
String[] names = new String[varInfos.size()];
for (int i = 0, mustAddLength = varInfos.size(); i < mustAddLength; i++) {
names[i] = varInfos.get(i).getName();
}
result.add(
factory.createVariableDeclaration(
ArrayUtil.EMPTY_STRING_ARRAY, initializer, varInfos.get(0).getType(), names));
}
return result;
}
private static boolean haveDifferentTypes(List<VariableInfo> varInfos) {
if (varInfos.size() < 2) return true;
Set<String> diffTypes = new HashSet<String>();
for (VariableInfo info : varInfos) {
final PsiType t = info.getType();
diffTypes.add(t == null ? null : TypesUtil.unboxPrimitiveTypeWrapper(t).getCanonicalText());
}
return diffTypes.size() > 1;
}
private static GrStatement[] createTupleDeclaration(
final VariableInfo[] infos, GrMethodCallExpression callExpression, final Project project) {
GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(project);
StringBuilder tuple = new StringBuilder();
tuple.append("def (");
for (VariableInfo info : infos) {
final PsiType type = info.getType();
if (type != null) {
final PsiType unboxed = TypesUtil.unboxPrimitiveTypeWrapper(type);
tuple.append(unboxed.getCanonicalText());
tuple.append(' ');
}
tuple.append(info.getName());
tuple.append(",");
}
StringUtil.trimEnd(tuple, ",");
tuple.append(")=");
tuple.append(callExpression.getText());
return new GrStatement[] {factory.createStatementFromText(tuple)};
}