diff options
Diffstat (limited to 'third_party/protobuf/java/core/src/main/java/com/google/protobuf/MessageLiteToString.java')
-rw-r--r-- | third_party/protobuf/java/core/src/main/java/com/google/protobuf/MessageLiteToString.java | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/MessageLiteToString.java b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/MessageLiteToString.java deleted file mode 100644 index 23373ef4cd..0000000000 --- a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/MessageLiteToString.java +++ /dev/null @@ -1,239 +0,0 @@ -// Protocol Buffers - Google's data interchange format -// Copyright 2008 Google Inc. All rights reserved. -// https://developers.google.com/protocol-buffers/ -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -package com.google.protobuf; - -import java.lang.reflect.Method; -import java.util.HashMap; -import java.util.Iterator; -import java.util.List; -import java.util.Map; -import java.util.Set; -import java.util.TreeSet; - -/** - * Helps generate {@link String} representations of {@link MessageLite} protos. - */ -// TODO(dweis): Fix map fields. -final class MessageLiteToString { - - private static final String LIST_SUFFIX = "List"; - private static final String BUILDER_LIST_SUFFIX = "OrBuilderList"; - private static final String BYTES_SUFFIX = "Bytes"; - - /** - * Returns a {@link String} representation of the {@link MessageLite} object. The first line of - * the {@code String} representation representation includes a comment string to uniquely identify - * the objcet instance. This acts as an indicator that this should not be relied on for - * comparisons. - * - * <p>For use by generated code only. - */ - static String toString(MessageLite messageLite, String commentString) { - StringBuilder buffer = new StringBuilder(); - buffer.append("# ").append(commentString); - reflectivePrintWithIndent(messageLite, buffer, 0); - return buffer.toString(); - } - - /** - * Reflectively prints the {@link MessageLite} to the buffer at given {@code indent} level. - * - * @param buffer the buffer to write to - * @param indent the number of spaces to indent the proto by - */ - private static void reflectivePrintWithIndent( - MessageLite messageLite, StringBuilder buffer, int indent) { - // Build a map of method name to method. We're looking for methods like getFoo(), hasFoo(), and - // getFooList() which might be useful for building an object's string representation. - Map<String, Method> nameToNoArgMethod = new HashMap<String, Method>(); - Map<String, Method> nameToMethod = new HashMap<String, Method>(); - Set<String> getters = new TreeSet<String>(); - for (Method method : messageLite.getClass().getDeclaredMethods()) { - nameToMethod.put(method.getName(), method); - if (method.getParameterTypes().length == 0) { - nameToNoArgMethod.put(method.getName(), method); - - if (method.getName().startsWith("get")) { - getters.add(method.getName()); - } - } - } - - for (String getter : getters) { - String suffix = getter.replaceFirst("get", ""); - if (suffix.endsWith(LIST_SUFFIX) && !suffix.endsWith(BUILDER_LIST_SUFFIX)) { - String camelCase = suffix.substring(0, 1).toLowerCase() - + suffix.substring(1, suffix.length() - LIST_SUFFIX.length()); - // Try to reflectively get the value and toString() the field as if it were repeated. This - // only works if the method names have not be proguarded out or renamed. - Method listMethod = nameToNoArgMethod.get("get" + suffix); - if (listMethod != null && listMethod.getReturnType().equals(List.class)) { - printField( - buffer, - indent, - camelCaseToSnakeCase(camelCase), - GeneratedMessageLite.invokeOrDie(listMethod, messageLite)); - continue; - } - } - - Method setter = nameToMethod.get("set" + suffix); - if (setter == null) { - continue; - } - if (suffix.endsWith(BYTES_SUFFIX) - && nameToNoArgMethod.containsKey( - "get" + suffix.substring(0, suffix.length() - "Bytes".length()))) { - // Heuristic to skip bytes based accessors for string fields. - continue; - } - - String camelCase = suffix.substring(0, 1).toLowerCase() + suffix.substring(1); - - // Try to reflectively get the value and toString() the field as if it were optional. This - // only works if the method names have not be proguarded out or renamed. - Method getMethod = nameToNoArgMethod.get("get" + suffix); - Method hasMethod = nameToNoArgMethod.get("has" + suffix); - // TODO(dweis): Fix proto3 semantics. - if (getMethod != null) { - Object value = GeneratedMessageLite.invokeOrDie(getMethod, messageLite); - final boolean hasValue = hasMethod == null - ? !isDefaultValue(value) - : (Boolean) GeneratedMessageLite.invokeOrDie(hasMethod, messageLite); - // TODO(dweis): This doesn't stop printing oneof case twice: value and enum style. - if (hasValue) { - printField( - buffer, - indent, - camelCaseToSnakeCase(camelCase), - value); - } - continue; - } - } - - if (messageLite instanceof GeneratedMessageLite.ExtendableMessage) { - Iterator<Map.Entry<GeneratedMessageLite.ExtensionDescriptor, Object>> iter = - ((GeneratedMessageLite.ExtendableMessage<?, ?>) messageLite).extensions.iterator(); - while (iter.hasNext()) { - Map.Entry<GeneratedMessageLite.ExtensionDescriptor, Object> entry = iter.next(); - printField(buffer, indent, "[" + entry.getKey().getNumber() + "]", entry.getValue()); - } - } - - if (((GeneratedMessageLite<?, ?>) messageLite).unknownFields != null) { - ((GeneratedMessageLite<?, ?>) messageLite).unknownFields.printWithIndent(buffer, indent); - } - } - - private static boolean isDefaultValue(Object o) { - if (o instanceof Boolean) { - return !((Boolean) o); - } - if (o instanceof Integer) { - return ((Integer) o) == 0; - } - if (o instanceof Float) { - return ((Float) o) == 0f; - } - if (o instanceof Double) { - return ((Double) o) == 0d; - } - if (o instanceof String) { - return o.equals(""); - } - if (o instanceof ByteString) { - return o.equals(ByteString.EMPTY); - } - if (o instanceof MessageLite) { // Can happen in oneofs. - return o == ((MessageLite) o).getDefaultInstanceForType(); - } - if (o instanceof java.lang.Enum<?>) { // Catches oneof enums. - return ((java.lang.Enum<?>) o).ordinal() == 0; - } - - return false; - } - - /** - * Formats a text proto field. - * - * <p>For use by generated code only. - * - * @param buffer the buffer to write to - * @param indent the number of spaces the proto should be indented by - * @param name the field name (in lower underscore case) - * @param object the object value of the field - */ - static final void printField(StringBuilder buffer, int indent, String name, Object object) { - if (object instanceof List<?>) { - List<?> list = (List<?>) object; - for (Object entry : list) { - printField(buffer, indent, name, entry); - } - return; - } - - buffer.append('\n'); - for (int i = 0; i < indent; i++) { - buffer.append(' '); - } - buffer.append(name); - - if (object instanceof String) { - buffer.append(": \"").append(TextFormatEscaper.escapeText((String) object)).append('"'); - } else if (object instanceof ByteString) { - buffer.append(": \"").append(TextFormatEscaper.escapeBytes((ByteString) object)).append('"'); - } else if (object instanceof GeneratedMessageLite) { - buffer.append(" {"); - reflectivePrintWithIndent((GeneratedMessageLite<?, ?>) object, buffer, indent + 2); - buffer.append("\n"); - for (int i = 0; i < indent; i++) { - buffer.append(' '); - } - buffer.append("}"); - } else { - buffer.append(": ").append(object.toString()); - } - } - - private static final String camelCaseToSnakeCase(String camelCase) { - StringBuilder builder = new StringBuilder(); - for (int i = 0; i < camelCase.length(); i++) { - char ch = camelCase.charAt(i); - if (Character.isUpperCase(ch)) { - builder.append("_"); - } - builder.append(Character.toLowerCase(ch)); - } - return builder.toString(); - } -} |