WTF NPAPI extension. Early draft.

tools/nixysa/nixysa/java_utils.py

Index: tools/nixysa/nixysa/java_utils.py
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--- tools/nixysa/nixysa/java_utils.py	(revision 0)
+++ tools/nixysa/nixysa/java_utils.py	(revision 0)
@@ -0,0 +1,139 @@
+#!/usr/bin/python2.4
+#
+# Copyright 2008 Google Inc.
+#
+# 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.
+
+"""Utilities for Java code generation.
+
+This module contains a few utilities for Javascripty-C++ code generation.
+"""
+
+import cpp_utils
+import naming
+
+
+def GetScopePrefix(scope, type_defn):
+  """Gets the prefix string to reference a type from a given scope.
+
+  This function returns a concatenation of C++ scope operators such as, in the
+  context of the given scope, when prefixing the name of the given type, it
+  will reference exactly that type.
+
+  For example, given:
+  namespace A {
+    namespace B {
+      class C;
+    }
+    namespace D {
+      void F();
+    }
+  }
+  To access C from F, one needs to refer to it by B.C. This function will
+  return the 'B.' part.
+
+  Args:
+    scope: the Definition for the scope from which the type must be accessed.
+    type_defn: the Definition for the type which must be accessed.
+
+  Returns:
+    the prefix string.
+  """
+  type_stack = type_defn.GetParentScopeStack()
+  scope_stack = scope.GetParentScopeStack() + [scope]
+  common_prefix = cpp_utils.GetCommonPrefixLength(
+      [scope.name for scope in scope_stack],
+      [scope.name for scope in type_stack])
+  return '.'.join([s.name for s in type_stack[common_prefix:]] + [''])
+
+
+def GetScopedName(scope, type_defn):
+  """Gets the prefix string to reference a type from a given scope.
+
+  This function returns a concatenation of C++ scope operators such as, in the
+  context of the given scope, when prefixing the name of the given type, it
+  will reference exactly that type.
+
+  For example, given:
+  namespace A {
+    namespace B {
+      class C;
+    }
+    namespace D {
+      void F();
+    }
+  }
+  To access C from F, one needs to refer to it by B.C. This function will
+  return exactly that.
+
+  Args:
+    scope: the Definition for the scope from which the type must be accessed.
+    type_defn: the Definition for the type which must be accessed.
+
+  Returns:
+    the scoped reference string.
+  """
+  return GetScopePrefix(scope, type_defn) + type_defn.name
+
+
+def GetFunctionParamPrototype(scope, param):
+  """Gets the string needed to declare a parameter in a function prototype.
+
+  Args:
+    scope: the scope of the prototype.
+    param: the Function.Param to declare
+
+  Returns:
+    a string that is the declaration of the parameter in the prototype.
+  """
+  bm = param.type_defn.binding_model
+  if param.mutable:
+    text = bm.JavaMemberString(scope, param.type_defn)
+  else:
+    text = bm.JavaMemberString(scope, param.type_defn)
+  return '%s %s' % (text, param.name)
+
+
+def GetFunctionPrototype(scope, obj):
+  """Gets the string needed to declare a function prototype.
+
+  Args:
+    scope: the scope of the prototype.
+    obj: the function to declare.
+
+  Returns:
+    a string that is the prototype.
+  """
+  # For creator functions matching class name, should be capitalized
+  if not obj.type_defn:
+    func_name = naming.Normalize(obj.name, naming.Capitalized)
+  else:
+    func_name = naming.Normalize(obj.name, naming.Java)
+  param_strings = []
+  for p in obj.params:
+    param_string = GetFunctionParamPrototype(scope, p)
+    param_strings += [param_string]
+  param_string = ', '.join(param_strings)
+
+  static = ''
+  if 'static' in obj.attributes:
+    static = 'static'
+
+  if obj.type_defn:
+    bm = obj.type_defn.binding_model
+    return_value = bm.JavaMemberString(scope, obj.type_defn)
+    prototype = '%s %s %s(%s)' % (static, return_value, func_name, param_string)
+  else:
+    prototype = '%s %s(%s)' % (static, func_name, param_string)
+
+  return prototype
Property changes on: tools/nixysa/nixysa/java_utils.py
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Added: svn:eol-style
   + LF