test_runner: Migrate MockSpellCheck to Chromium C++ style.

content/shell/renderer/test_runner/mock_spell_check.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/shell/renderer/test_runner/mock_spell_check.h"
+
+#include "base/logging.h"
+#include "content/shell/renderer/test_runner/TestCommon.h"
+#include "third_party/WebKit/public/platform/WebCString.h"
+
+namespace content {
+
+namespace {
+
+void Append(blink::WebVector<blink::WebString>* data,
+            const blink::WebString& item) {
+  blink::WebVector<blink::WebString> result(data->size() + 1);
+  for (size_t i = 0; i < data->size(); ++i)
+    result[i] = (*data)[i];
+  result[data->size()] = item;
+  data->swap(result);
+}
+
+}  // namespace
+
+MockSpellCheck::MockSpellCheck() : initialized_(false) {
+}
+
+MockSpellCheck::~MockSpellCheck() {
+}
+
+bool MockSpellCheck::SpellCheckWord(const blink::WebString& text,
+                                    int* misspelled_offset,
+                                    int* misspelled_length) {
+  DCHECK(misspelled_offset);
+  DCHECK(misspelled_length);
+
+  // Initialize this spellchecker.
+  InitializeIfNeeded();
+
+  // Reset the result values as our spellchecker does.
+  *misspelled_offset = 0;
+  *misspelled_length = 0;
+
+  // Convert to a base::string16 because we store base::string16 instances in
+  // misspelled_words_ and blink::WebString has no find().
+  base::string16 string_text = text;
+  int skipped_length = 0;
+
+  while (!string_text.empty()) {
+    // Extract the first possible English word from the given string.
+    // The given string may include non-ASCII characters or numbers. So, we
+    // should filter out such characters before start looking up our
+    // misspelled-word table.
+    // (This is a simple version of our SpellCheckWordIterator class.)
+    // If the given string doesn't include any ASCII characters, we can treat
+    // the string as valid one.
+    base::string16::iterator first_char =
+        std::find_if(string_text.begin(), string_text.end(), isASCIIAlpha);
+    if (first_char == string_text.end())
+      return true;
+    int word_offset = std::distance(string_text.begin(), first_char);
+    int max_word_length = static_cast<int>(string_text.length()) - word_offset;
+    int word_length;
+    base::string16 word;
+
+    // Look up our misspelled-word table to check if the extracted word is a
+    // known misspelled word, and return the offset and the length of the
+    // extracted word if this word is a known misspelled word.
+    // (See the comment in MockSpellCheck::InitializeIfNeeded() why we use a
+    // misspelled-word table.)
+    for (size_t i = 0; i < misspelled_words_.size(); ++i) {
+      word_length =
+          static_cast<int>(misspelled_words_.at(i).length()) > max_word_length
+              ? max_word_length
+              : static_cast<int>(misspelled_words_.at(i).length());
+      word = string_text.substr(word_offset, word_length);
+      if (word == misspelled_words_.at(i) &&
+          (static_cast<int>(string_text.length()) ==
+               word_offset + word_length ||
+           isNotASCIIAlpha(string_text[word_offset + word_length]))) {
+        *misspelled_offset = word_offset + skipped_length;
+        *misspelled_length = word_length;
+        break;
+      }
+    }
+
+    if (*misspelled_length > 0)
+      break;
+
+    base::string16::iterator last_char = std::find_if(
+        string_text.begin() + word_offset, string_text.end(), isNotASCIIAlpha);
+    if (last_char == string_text.end())
+      word_length = static_cast<int>(string_text.length()) - word_offset;
+    else
+      word_length = std::distance(first_char, last_char);
+
+    DCHECK_LT(0, word_offset + word_length);
+    string_text = string_text.substr(word_offset + word_length);
+    skipped_length += word_offset + word_length;
+  }
+
+  return false;
+}
+
+bool MockSpellCheck::HasInCache(const blink::WebString& word) {
+  return word == blink::WebString::fromUTF8("Spell wellcome. Is it broken?") ||
+         word == blink::WebString::fromUTF8("Spell wellcome.\x007F");
+}
+
+bool MockSpellCheck::IsMultiWordMisspelling(
+    const blink::WebString& text,
+    std::vector<blink::WebTextCheckingResult>* results) {
+  if (text == blink::WebString::fromUTF8("Helllo wordl.")) {
+    results->push_back(blink::WebTextCheckingResult(
+        blink::WebTextDecorationTypeSpelling, 0, 6, blink::WebString("Hello")));
+    results->push_back(blink::WebTextCheckingResult(
+        blink::WebTextDecorationTypeSpelling, 7, 5, blink::WebString("world")));
+    return true;
+  }
+  return false;
+}
+
+void MockSpellCheck::FillSuggestionList(
+    const blink::WebString& word,
+    blink::WebVector<blink::WebString>* suggestions) {
+  if (word == blink::WebString::fromUTF8("wellcome"))
+    Append(suggestions, blink::WebString::fromUTF8("welcome"));
+  else if (word == blink::WebString::fromUTF8("upper case"))
+    Append(suggestions, blink::WebString::fromUTF8("uppercase"));
+  else if (word == blink::WebString::fromUTF8("Helllo"))
+    Append(suggestions, blink::WebString::fromUTF8("Hello"));
+  else if (word == blink::WebString::fromUTF8("wordl"))
+    Append(suggestions, blink::WebString::fromUTF8("world"));
+}
+
+bool MockSpellCheck::InitializeIfNeeded() {
+  // Exit if we have already initialized this object.
+  if (initialized_)
+    return false;
+
+  // Create a table that consists of misspelled words used in WebKit layout
+  // tests.
+  // Since WebKit layout tests don't have so many misspelled words as
+  // well-spelled words, it is easier to compare the given word with misspelled
+  // ones than to compare with well-spelled ones.
+  static const char* misspelled_words[] = {
+      // These words are known misspelled words in webkit tests.
+      // If there are other misspelled words in webkit tests, please add them in
+      // this array.
+      "foo",    "Foo",           "baz",             "fo",         "LibertyF",
+      "chello", "xxxtestxxx",    "XXxxx",           "Textx",      "blockquoted",
+      "asd",    "Lorem",         "Nunc",            "Curabitur",  "eu",
+      "adlj",   "adaasj",        "sdklj",           "jlkds",      "jsaada",
+      "jlda",   "zz",            "contentEditable",
+      // The following words are used by unit tests.
+      "ifmmp",  "qwertyuiopasd", "qwertyuiopasdf",  "upper case", "wellcome"};
+
+  misspelled_words_.clear();
+  for (size_t i = 0; i < arraysize(misspelled_words); ++i)
+    misspelled_words_.push_back(
+        base::string16(misspelled_words[i],
+                       misspelled_words[i] + strlen(misspelled_words[i])));
+
+  // Mark as initialized to prevent this object from being initialized twice
+  // or more.
+  initialized_ = true;
+
+  // Since this MockSpellCheck class doesn't download dictionaries, this
+  // function always returns false.
+  return false;
+}
+
+}  // namespace content