Snap for 5183987 from 062f698bc713f2f57bb4f3a175f507f31a84e409 to q-keystone-qcom-release

Change-Id: I7548c5662184dd4e8dfafd29c767b8e4c074dd5d

1 files changed, 115 insertions, 0 deletions

diff --git a/startop/view_compiler/java_lang_builder.cc b/startop/view_compiler/java_lang_builder.cc
new file mode 100644
index 000000000000..0b8754fc7096
--- /dev/null
+++ b/startop/view_compiler/java_lang_builder.cc
@@ -0,0 +1,115 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "java_lang_builder.h"
+
+#include "android-base/stringprintf.h"
+
+using android::base::StringPrintf;
+using std::string;
+
+void JavaLangViewBuilder::Start() const {
+  out_ << StringPrintf("package %s;\n", package_.c_str())
+       << "import android.content.Context;\n"
+          "import android.content.res.Resources;\n"
+          "import android.content.res.XmlResourceParser;\n"
+          "import android.util.AttributeSet;\n"
+          "import android.util.Xml;\n"
+          "import android.view.*;\n"
+          "import android.widget.*;\n"
+          "\n"
+          "public final class CompiledView {\n"
+          "\n"
+          "static <T extends View> T createView(Context context, AttributeSet attrs, View parent, "
+          "String name, LayoutInflater.Factory factory, LayoutInflater.Factory2 factory2) {"
+          "\n"
+          "  if (factory2 != null) {\n"
+          "    return (T)factory2.onCreateView(parent, name, context, attrs);\n"
+          "  } else if (factory != null) {\n"
+          "    return (T)factory.onCreateView(name, context, attrs);\n"
+          "  }\n"
+          // TODO: find a way to call the private factory
+          "  return null;\n"
+          "}\n"
+          "\n"
+          "  public static View inflate(Context context) {\n"
+          "    try {\n"
+          "      LayoutInflater inflater = LayoutInflater.from(context);\n"
+          "      LayoutInflater.Factory factory = inflater.getFactory();\n"
+          "      LayoutInflater.Factory2 factory2 = inflater.getFactory2();\n"
+          "      Resources res = context.getResources();\n"
+       << StringPrintf("      XmlResourceParser xml = res.getLayout(%s.R.layout.%s);\n",
+                       package_.c_str(),
+                       layout_name_.c_str())
+       << "      AttributeSet attrs = Xml.asAttributeSet(xml);\n"
+          // The Java-language XmlPullParser needs a call to next to find the start document tag.
+          "      xml.next(); // start document\n";
+}
+
+void JavaLangViewBuilder::Finish() const {
+  out_ << "    } catch (Exception e) {\n"
+          "      return null;\n"
+          "    }\n"  // end try
+          "  }\n"    // end inflate
+          "}\n";     // end CompiledView
+}
+
+void JavaLangViewBuilder::StartView(const string& class_name) {
+  const string view_var = MakeVar("view");
+  const string layout_var = MakeVar("layout");
+  std::string parent = "null";
+  if (!view_stack_.empty()) {
+    const StackEntry& parent_entry = view_stack_.back();
+    parent = parent_entry.view_var;
+  }
+  out_ << "      xml.next(); // <" << class_name << ">\n"
+       << StringPrintf("      %s %s = createView(context, attrs, %s, \"%s\", factory, factory2);\n",
+                       class_name.c_str(),
+                       view_var.c_str(),
+                       parent.c_str(),
+                       class_name.c_str())
+       << StringPrintf("      if (%s == null) %s = new %s(context, attrs);\n",
+                       view_var.c_str(),
+                       view_var.c_str(),
+                       class_name.c_str());
+  if (!view_stack_.empty()) {
+    out_ << StringPrintf("      ViewGroup.LayoutParams %s = %s.generateLayoutParams(attrs);\n",
+                         layout_var.c_str(),
+                         parent.c_str());
+  }
+  view_stack_.push_back({class_name, view_var, layout_var});
+}
+
+void JavaLangViewBuilder::FinishView() {
+  const StackEntry var = view_stack_.back();
+  view_stack_.pop_back();
+  if (!view_stack_.empty()) {
+    const string& parent = view_stack_.back().view_var;
+    out_ << StringPrintf("      xml.next(); // </%s>\n", var.class_name.c_str())
+         << StringPrintf("      %s.addView(%s, %s);\n",
+                         parent.c_str(),
+                         var.view_var.c_str(),
+                         var.layout_params_var.c_str());
+  } else {
+    out_ << StringPrintf("      return %s;\n", var.view_var.c_str());
+  }
+}
+
+const std::string JavaLangViewBuilder::MakeVar(std::string prefix) {
+  std::stringstream v;
+  v << prefix << view_id_++;
+  return v.str();
+}