Supporting more APIs with json_schema_compiler

tools/json_schema_compiler/cpp_util.py

Index: tools/json_schema_compiler/cpp_util.py
diff --git a/tools/json_schema_compiler/cpp_util.py b/tools/json_schema_compiler/cpp_util.py
index 760f01da194fc19d30ea2090075a7524f22643d8..38e4bed7723c5db4ebe6461011ce24397b75aba7 100644
--- a/tools/json_schema_compiler/cpp_util.py
+++ b/tools/json_schema_compiler/cpp_util.py
@@ -17,8 +17,7 @@ GENERATED_FILE_MESSAGE = """// GENERATED FROM THE API DEFINITION IN
 // DO NOT EDIT.
 """
 
-
-def CppName(s):
+def Classname(s):
   """Translates a namespace name or function name into something more
   suited to C++.
 
@@ -30,7 +29,11 @@ def CppName(s):
 def CreateFundamentalValue(prop, var):
   """Returns the C++ code for creating a value of the given property type
   using the given variable.
+
+  var: Fundamental or Fundamental*
   """
+  if prop.optional:
+    var = '*' + var
   return {
       PropertyType.STRING: 'Value::CreateStringValue(%s)',
       PropertyType.BOOLEAN: 'Value::CreateBooleanValue(%s)',
@@ -38,14 +41,64 @@ def CreateFundamentalValue(prop, var):
       PropertyType.DOUBLE: 'Value::CreateDoubleValue(%s)',
   }[prop.type_] % var
 
+def GetAsFundamentalValue(prop, src, dst):
+  """Returns the C++ code for retrieving a fundamental type from a
+  Value into a variable.
 
-def GetFundamentalValue(prop, var):
-  """Returns the C++ code for retrieving a fundamental type from a Value
-  into a variable.
+  src: Value*
+  dst: Property*
   """
   return {
-      PropertyType.STRING: 'GetAsString(%s)',
-      PropertyType.BOOLEAN: 'GetAsBoolean(%s)',
-      PropertyType.INTEGER: 'GetAsInteger(%s)',
-      PropertyType.DOUBLE: 'GetAsDouble(%s)',
-  }[prop.type_] % var
+      PropertyType.STRING: '%s->GetAsString(%s)',
+      PropertyType.BOOLEAN: '%s->GetAsBoolean(%s)',
+      PropertyType.INTEGER: '%s->GetAsInteger(%s)',
+      PropertyType.DOUBLE: '%s->GetAsDouble(%s)',
+  }[prop.type_] % (src, dst)
+
+def GetFundamentalValue(prop, src, name, dst):
+  """Returns the C++ code for retrieving a fundamental type from a
+  DictionaryValue into a variable.
+
+  src: DictionaryValue*
+  name: key
+  dst: Property*
+  """
+  return {
+      PropertyType.STRING: '%s->GetString("%s", %s)',
+      PropertyType.BOOLEAN: '%s->GetBoolean("%s", %s)',
+      PropertyType.INTEGER: '%s->GetInteger("%s", %s)',
+      PropertyType.DOUBLE: '%s->GetDouble("%s", %s)',
+  }[prop.type_] % (src, name, dst)
+
+def CreateValueFromSingleProperty(prop, var):
+  """Creates a Value given a single property. Use for everything except
+  PropertyType.ARRAY.
+
+  var: raw value
+  """
+  if prop.type_ == PropertyType.REF or prop.type_ == PropertyType.OBJECT:
+    if prop.optional:
+      return '%s->ToValue()' % var
+    else:
+      return '%s.ToValue()' % var
+  elif prop.type_.is_fundamental:
+    return CreateFundamentalValue(prop, var)
+  else:
+    raise NotImplementedError('Conversion of single %s to Value not implemented'
+        % repr(prop.type_))
+
+def GetValueFromList(prop, src, index, dst):
+  """Returns the C++ code for retrieving a fundamental type from a
+  DictionaryValue into a variable.
+
+  src: ListValue&
+  index: int
+  dst: Property*
+  """
+  return {
+      PropertyType.REF: '%s.GetDictionary(%d, %s)',
+      PropertyType.STRING: '%s.GetString(%d, %s)',
+      PropertyType.BOOLEAN: '%s.GetBoolean(%d, %s)',
+      PropertyType.INTEGER: '%s.GetInteger(%d, %s)',
+      PropertyType.DOUBLE: '%s.GetDouble(%d, %s)',
+  }[prop.type_] % (src, index, dst)