org.robolectric.res.android.AttributeResolution9 Maven / Gradle / Ivy
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An alternative Android testing framework.
package org.robolectric.res.android;
import static org.robolectric.res.android.ApkAssetsCookie.K_INVALID_COOKIE;
import static org.robolectric.res.android.ApkAssetsCookie.kInvalidCookie;
import static org.robolectric.res.android.Util.ALOGI;
import java.util.Arrays;
import org.robolectric.res.android.CppAssetManager2.ResolvedBag;
import org.robolectric.res.android.CppAssetManager2.ResolvedBag.Entry;
import org.robolectric.res.android.CppAssetManager2.Theme;
import org.robolectric.res.android.ResourceTypes.Res_value;
// transliterated from
// https://android.googlesource.com/platform/frameworks/base/+/android-9.0.0_r12/libs/androidfw/AttributeResolution.cpp and
// https://android.googlesource.com/platform/frameworks/base/+/android-9.0.0_r12/libs/androidfw/include/androidfw/AttributeResolution.h
public class AttributeResolution9 {
public static final boolean kThrowOnBadId = false;
private static final boolean kDebugStyles = false;
// Offsets into the outValues array populated by the methods below. outValues is a uint32_t
// array, but each logical element takes up 6 uint32_t-sized physical elements.
public static final int STYLE_NUM_ENTRIES = 6;
public static final int STYLE_TYPE = 0;
public static final int STYLE_DATA = 1;
public static final int STYLE_ASSET_COOKIE = 2;
public static final int STYLE_RESOURCE_ID = 3;
public static final int STYLE_CHANGING_CONFIGURATIONS = 4;
public static final int STYLE_DENSITY = 5;
// Java asset cookies have 0 as an invalid cookie, but TypedArray expects < 0.
private static int ApkAssetsCookieToJavaCookie(ApkAssetsCookie cookie) {
return cookie.intValue() != kInvalidCookie ? (cookie.intValue() + 1) : -1;
}
public static class XmlAttributeFinder {
private ResXMLParser xmlParser;
XmlAttributeFinder(ResXMLParser xmlParser) {
this.xmlParser = xmlParser;
}
public int Find(int curIdent) {
if (xmlParser == null) {
return -1;
}
int attributeCount = xmlParser.getAttributeCount();
for (int i = 0; i < attributeCount; i++) {
if (xmlParser.getAttributeNameResID(i) == curIdent) {
return i;
}
}
return -1;
}
}
public static class BagAttributeFinder {
private final Entry[] bagEntries;
BagAttributeFinder(ResolvedBag bag) {
this.bagEntries = bag == null ? null : bag.entries;
}
// Robolectric: unoptimized relative to Android impl
Entry Find(int ident) {
Entry needle = new Entry();
needle.key = ident;
if (bagEntries == null) {
return null;
}
int i = Arrays.binarySearch(bagEntries, needle, (o1, o2) -> o1.key - o2.key);
return i < 0 ? null : bagEntries[i];
}
}
// These are all variations of the same method. They each perform the exact same operation,
// but on various data sources. I *think* they are re-written to avoid an extra branch
// in the inner loop, but after one branch miss (some pointer != null), the branch predictor should
// predict the rest of the iterations' branch correctly.
// TODO(adamlesinski): Run performance tests against these methods and a new, single method
// that uses all the sources and branches to the right ones within the inner loop.
// `out_values` must NOT be nullptr.
// `out_indices` may be nullptr.
public static boolean ResolveAttrs(Theme theme, int def_style_attr,
int def_style_res, int[] src_values,
int src_values_length, int[] attrs,
int attrs_length, int[] out_values, int[] out_indices) {
if (kDebugStyles) {
ALOGI("APPLY STYLE: theme=0x%s defStyleAttr=0x%x defStyleRes=0x%x", theme,
def_style_attr, def_style_res);
}
CppAssetManager2 assetmanager = theme.GetAssetManager();
ResTable_config config = new ResTable_config();
Res_value value;
int indicesIdx = 0;
// Load default style from attribute, if specified...
final Ref def_style_flags = new Ref<>(0);
if (def_style_attr != 0) {
final Ref valueRef = new Ref<>(null);
if (theme.GetAttribute(def_style_attr, valueRef, def_style_flags).intValue() != kInvalidCookie) {
value = valueRef.get();
if (value.dataType == Res_value.TYPE_REFERENCE) {
def_style_res = value.data;
}
}
}
// Retrieve the default style bag, if requested.
ResolvedBag default_style_bag = null;
if (def_style_res != 0) {
default_style_bag = assetmanager.GetBag(def_style_res);
if (default_style_bag != null) {
def_style_flags.set(def_style_flags.get() | default_style_bag.type_spec_flags);
}
}
BagAttributeFinder def_style_attr_finder = new BagAttributeFinder(default_style_bag);
// Now iterate through all of the attributes that the client has requested,
// filling in each with whatever data we can find.
int destOffset = 0;
for (int ii=0; ii 0 && src_values[ii] != 0) {
value = new Res_value((byte) Res_value.TYPE_ATTRIBUTE, src_values[ii]);
if (kDebugStyles) {
ALOGI("-> From values: type=0x%x, data=0x%08x", value.dataType, value.data);
}
} else {
final Entry entry = def_style_attr_finder.Find(cur_ident);
if (entry != null) {
cookie = entry.cookie;
type_set_flags = def_style_flags.get();
value = entry.value;
if (kDebugStyles) {
ALOGI("-> From def style: type=0x%x, data=0x%08x", value.dataType, value.data);
}
}
}
int resid = 0;
final Ref valueRef = new Ref<>(value);
final Ref residRef = new Ref<>(resid);
final Ref type_set_flagsRef = new Ref<>(type_set_flags);
final Ref configRef = new Ref<>(config);
if (value.dataType != Res_value.TYPE_NULL) {
// Take care of resolving the found resource to its final value.
ApkAssetsCookie new_cookie =
theme.ResolveAttributeReference(cookie, valueRef, configRef, type_set_flagsRef, residRef);
if (new_cookie.intValue() != kInvalidCookie) {
cookie = new_cookie;
}
if (kDebugStyles) {
ALOGI("-> Resolved attr: type=0x%x, data=0x%08x", value.dataType, value.data);
}
} else if (value.data != Res_value.DATA_NULL_EMPTY) {
// If we still don't have a value for this attribute, try to find it in the theme!
ApkAssetsCookie new_cookie = theme.GetAttribute(cur_ident, valueRef, type_set_flagsRef);
if (new_cookie.intValue() != kInvalidCookie) {
if (kDebugStyles) {
ALOGI("-> From theme: type=0x%x, data=0x%08x", value.dataType, value.data);
}
new_cookie =
assetmanager.ResolveReference(new_cookie, valueRef, configRef, type_set_flagsRef, residRef);
if (new_cookie.intValue() != kInvalidCookie) {
cookie = new_cookie;
}
if (kDebugStyles) {
ALOGI("-> Resolved theme: type=0x%x, data=0x%08x", value.dataType, value.data);
}
}
}
value = valueRef.get();
resid = residRef.get();
type_set_flags = type_set_flagsRef.get();
config = configRef.get();
// Deal with the special @null value -- it turns back to TYPE_NULL.
if (value.dataType == Res_value.TYPE_REFERENCE && value.data == 0) {
if (kDebugStyles) {
ALOGI("-> Setting to @null!");
}
value = Res_value.NULL_VALUE;
cookie = K_INVALID_COOKIE;
}
if (kDebugStyles) {
ALOGI("Attribute 0x%08x: type=0x%x, data=0x%08x", cur_ident, value.dataType,
value.data);
}
// Write the final value back to Java.
out_values[destOffset + STYLE_TYPE] = value.dataType;
out_values[destOffset + STYLE_DATA] = value.data;
out_values[destOffset + STYLE_ASSET_COOKIE] = ApkAssetsCookieToJavaCookie(cookie);
out_values[destOffset + STYLE_RESOURCE_ID] = resid;
out_values[destOffset + STYLE_CHANGING_CONFIGURATIONS] = type_set_flags;
out_values[destOffset + STYLE_DENSITY] = config.density;
if (out_indices != null && value.dataType != Res_value.TYPE_NULL) {
indicesIdx++;
out_indices[indicesIdx] = ii;
}
destOffset += STYLE_NUM_ENTRIES;
}
if (out_indices != null) {
out_indices[0] = indicesIdx;
}
return true;
}
public static void ApplyStyle(Theme theme, ResXMLParser xml_parser, int def_style_attr,
int def_style_resid, int[] attrs, int attrs_length,
int[] out_values, int[] out_indices) {
if (kDebugStyles) {
ALOGI("APPLY STYLE: theme=%s defStyleAttr=0x%x defStyleRes=0x%x xml=%s",
theme, def_style_attr, def_style_resid, xml_parser);
}
CppAssetManager2 assetmanager = theme.GetAssetManager();
final Ref config = new Ref<>(new ResTable_config());
final Ref value = new Ref<>(new Res_value());
int indices_idx = 0;
// Load default style from attribute, if specified...
final Ref def_style_flags = new Ref<>(0);
if (def_style_attr != 0) {
if (theme.GetAttribute(def_style_attr, value, def_style_flags).intValue() != kInvalidCookie) {
if (value.get().dataType == DataType.REFERENCE.code()) {
def_style_resid = value.get().data;
}
}
}
// Retrieve the style resource ID associated with the current XML tag's style attribute.
int style_resid = 0;
final Ref style_flags = new Ref<>(0);
if (xml_parser != null) {
int idx = xml_parser.indexOfStyle();
if (idx >= 0 && xml_parser.getAttributeValue(idx, value) >= 0) {
if (value.get().dataType == DataType.ATTRIBUTE.code()) {
// Resolve the attribute with out theme.
if (theme.GetAttribute(value.get().data, value, style_flags).intValue() == kInvalidCookie) {
value.set(value.get().withType(DataType.NULL.code()));
}
}
if (value.get().dataType == DataType.REFERENCE.code()) {
style_resid = value.get().data;
}
}
}
// Retrieve the default style bag, if requested.
ResolvedBag default_style_bag = null;
if (def_style_resid != 0) {
default_style_bag = assetmanager.GetBag(def_style_resid);
if (default_style_bag != null) {
def_style_flags.set(def_style_flags.get() | default_style_bag.type_spec_flags);
}
}
BagAttributeFinder def_style_attr_finder = new BagAttributeFinder(default_style_bag);
// Retrieve the style class bag, if requested.
ResolvedBag xml_style_bag = null;
if (style_resid != 0) {
xml_style_bag = assetmanager.GetBag(style_resid);
if (xml_style_bag != null) {
style_flags.set(style_flags.get() | xml_style_bag.type_spec_flags);
}
}
BagAttributeFinder xml_style_attr_finder = new BagAttributeFinder(xml_style_bag);
// Retrieve the XML attributes, if requested.
XmlAttributeFinder xml_attr_finder = new XmlAttributeFinder(xml_parser);
// Now iterate through all of the attributes that the client has requested,
// filling in each with whatever data we can find.
for (int ii = 0; ii < attrs_length; ii++) {
final int cur_ident = attrs[ii];
if (kDebugStyles) {
ALOGI("RETRIEVING ATTR 0x%08x...", cur_ident);
}
ApkAssetsCookie cookie = K_INVALID_COOKIE;
final Ref type_set_flags = new Ref<>(0);
value.set(Res_value.NULL_VALUE);
config.get().density = 0;
// Try to find a value for this attribute... we prioritize values
// coming from, first XML attributes, then XML style, then default
// style, and finally the theme.
// Walk through the xml attributes looking for the requested attribute.
int xml_attr_idx = xml_attr_finder.Find(cur_ident);
if (xml_attr_idx != -1) {
// We found the attribute we were looking for.
xml_parser.getAttributeValue(xml_attr_idx, value);
type_set_flags.set(style_flags.get());
if (kDebugStyles) {
ALOGI("-> From XML: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
}
if (value.get().dataType == DataType.NULL.code() && value.get().data != Res_value.DATA_NULL_EMPTY) {
// Walk through the style class values looking for the requested attribute.
Entry entry = xml_style_attr_finder.Find(cur_ident);
if (entry != null) {
// We found the attribute we were looking for.
cookie = entry.cookie;
type_set_flags.set(style_flags.get());
value.set(entry.value);
if (kDebugStyles) {
ALOGI("-> From style: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
}
}
if (value.get().dataType == DataType.NULL.code() && value.get().data != Res_value.DATA_NULL_EMPTY) {
// Walk through the default style values looking for the requested attribute.
Entry entry = def_style_attr_finder.Find(cur_ident);
if (entry != null) {
// We found the attribute we were looking for.
cookie = entry.cookie;
type_set_flags.set(def_style_flags.get());
value.set(entry.value);
if (kDebugStyles) {
ALOGI("-> From def style: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
}
}
final Ref resid = new Ref<>(0);
if (value.get().dataType != DataType.NULL.code()) {
// Take care of resolving the found resource to its final value.
ApkAssetsCookie new_cookie =
theme.ResolveAttributeReference(cookie, value, config, type_set_flags, resid);
if (new_cookie.intValue() != kInvalidCookie) {
cookie = new_cookie;
}
if (kDebugStyles) {
ALOGI("-> Resolved attr: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
} else if (value.get().data != Res_value.DATA_NULL_EMPTY) {
// If we still don't have a value for this attribute, try to find it in the theme!
ApkAssetsCookie new_cookie = theme.GetAttribute(cur_ident, value, type_set_flags);
if (new_cookie.intValue() != kInvalidCookie) {
if (kDebugStyles) {
ALOGI("-> From theme: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
new_cookie =
assetmanager.ResolveReference(new_cookie, value, config, type_set_flags, resid);
if (new_cookie.intValue() != kInvalidCookie) {
cookie = new_cookie;
}
if (kDebugStyles) {
ALOGI("-> Resolved theme: type=0x%x, data=0x%08x", value.get().dataType, value.get().data);
}
}
}
// Deal with the special @null value -- it turns back to TYPE_NULL.
if (value.get().dataType == DataType.REFERENCE.code() && value.get().data == 0) {
if (kDebugStyles) {
ALOGI(". Setting to @null!");
}
value.set(Res_value.NULL_VALUE);
cookie = K_INVALID_COOKIE;
}
if (kDebugStyles) {
ALOGI("Attribute 0x%08x: type=0x%x, data=0x%08x", cur_ident, value.get().dataType, value.get().data);
}
// Write the final value back to Java.
int destIndex = ii * STYLE_NUM_ENTRIES;
Res_value res_value = value.get();
out_values[destIndex + STYLE_TYPE] = res_value.dataType;
out_values[destIndex + STYLE_DATA] = res_value.data;
out_values[destIndex + STYLE_ASSET_COOKIE] = ApkAssetsCookieToJavaCookie(cookie);
out_values[destIndex + STYLE_RESOURCE_ID] = resid.get();
out_values[destIndex + STYLE_CHANGING_CONFIGURATIONS] = type_set_flags.get();
out_values[destIndex + STYLE_DENSITY] = config.get().density;
if (res_value.dataType != DataType.NULL.code() || res_value.data == Res_value.DATA_NULL_EMPTY) {
indices_idx++;
// out_indices must NOT be nullptr.
out_indices[indices_idx] = ii;
}
// Robolectric-custom:
// if (false && res_value.dataType == DataType.ATTRIBUTE.code()) {
// final Ref attrName = new Ref<>(null);
// final Ref attrRefName = new Ref<>(null);
// boolean gotName = assetmanager.GetResourceName(cur_ident, attrName);
// boolean gotRefName = assetmanager.GetResourceName(res_value.data, attrRefName);
// Logger.warn(
// "Failed to resolve attribute lookup: %s=\"?%s\"; theme: %s",
// gotName ? attrName.get() : "unknown", gotRefName ? attrRefName.get() : "unknown",
// theme);
// }
// out_values += STYLE_NUM_ENTRIES;
}
// out_indices must NOT be nullptr.
out_indices[0] = indices_idx;
}
public static boolean RetrieveAttributes(CppAssetManager2 assetmanager, ResXMLParser xml_parser, int[] attrs,
int attrs_length, int[] out_values, int[] out_indices) {
final Ref config = new Ref<>(new ResTable_config());
final Ref value = new Ref<>(null);
int indices_idx = 0;
// Retrieve the XML attributes, if requested.
final int xml_attr_count = xml_parser.getAttributeCount();
int ix = 0;
int cur_xml_attr = xml_parser.getAttributeNameResID(ix);
// Now iterate through all of the attributes that the client has requested,
// filling in each with whatever data we can find.
int baseDest = 0;
for (int ii = 0; ii < attrs_length; ii++) {
final int cur_ident = attrs[ii];
ApkAssetsCookie cookie = K_INVALID_COOKIE;
final Ref type_set_flags = new Ref<>(0);
value.set(Res_value.NULL_VALUE);
config.get().density = 0;
// Try to find a value for this attribute...
// Skip through XML attributes until the end or the next possible match.
while (ix < xml_attr_count && cur_ident > cur_xml_attr) {
ix++;
cur_xml_attr = xml_parser.getAttributeNameResID(ix);
}
// Retrieve the current XML attribute if it matches, and step to next.
if (ix < xml_attr_count && cur_ident == cur_xml_attr) {
xml_parser.getAttributeValue(ix, value);
ix++;
cur_xml_attr = xml_parser.getAttributeNameResID(ix);
}
final Ref resid = new Ref<>(0);
if (value.get().dataType != Res_value.TYPE_NULL) {
// Take care of resolving the found resource to its final value.
ApkAssetsCookie new_cookie =
assetmanager.ResolveReference(cookie, value, config, type_set_flags, resid);
if (new_cookie.intValue() != kInvalidCookie) {
cookie = new_cookie;
}
}
// Deal with the special @null value -- it turns back to TYPE_NULL.
if (value.get().dataType == Res_value.TYPE_REFERENCE && value.get().data == 0) {
value.set(Res_value.NULL_VALUE);
cookie = K_INVALID_COOKIE;
}
// Write the final value back to Java.
out_values[baseDest + STYLE_TYPE] = value.get().dataType;
out_values[baseDest + STYLE_DATA] = value.get().data;
out_values[baseDest + STYLE_ASSET_COOKIE] = ApkAssetsCookieToJavaCookie(cookie);
out_values[baseDest + STYLE_RESOURCE_ID] = resid.get();
out_values[baseDest + STYLE_CHANGING_CONFIGURATIONS] = type_set_flags.get();
out_values[baseDest + STYLE_DENSITY] = config.get().density;
if (out_indices != null &&
(value.get().dataType != Res_value.TYPE_NULL
|| value.get().data == Res_value.DATA_NULL_EMPTY)) {
indices_idx++;
out_indices[indices_idx] = ii;
}
// out_values += STYLE_NUM_ENTRIES;
baseDest += STYLE_NUM_ENTRIES;
}
if (out_indices != null) {
out_indices[0] = indices_idx;
}
return true;
}
}
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