third_party/protobuf: Update to HEAD (83d681ee2c)

third_party/protobuf/python/google/protobuf/internal/well_known_types.py

Index: third_party/protobuf/python/google/protobuf/internal/well_known_types.py
diff --git a/third_party/protobuf/python/google/protobuf/internal/well_known_types.py b/third_party/protobuf/python/google/protobuf/internal/well_known_types.py
index 7c5dffd0fc53d4728647c1e8551aa9d676782c8d..d631abeeaa5d8368903a5e334fe9450d4fb0e8f1 100644
--- a/third_party/protobuf/python/google/protobuf/internal/well_known_types.py
+++ b/third_party/protobuf/python/google/protobuf/internal/well_known_types.py
@@ -53,6 +53,7 @@ _NANOS_PER_MICROSECOND = 1000
 _MILLIS_PER_SECOND = 1000
 _MICROS_PER_SECOND = 1000000
 _SECONDS_PER_DAY = 24 * 3600
+_DURATION_SECONDS_MAX = 315576000000
 
 
 class Error(Exception):
@@ -247,6 +248,7 @@ class Duration(object):
       represent the exact Duration value. For example: "1s", "1.010s",
       "1.000000100s", "-3.100s"
     """
+    _CheckDurationValid(self.seconds, self.nanos)
     if self.seconds < 0 or self.nanos < 0:
       result = '-'
       seconds = - self.seconds + int((0 - self.nanos) // 1e9)
@@ -286,14 +288,17 @@ class Duration(object):
     try:
       pos = value.find('.')
       if pos == -1:
-        self.seconds = int(value[:-1])
-        self.nanos = 0
+        seconds = int(value[:-1])
+        nanos = 0
       else:
-        self.seconds = int(value[:pos])
+        seconds = int(value[:pos])
         if value[0] == '-':
-          self.nanos = int(round(float('-0{0}'.format(value[pos: -1])) *1e9))
+          nanos = int(round(float('-0{0}'.format(value[pos: -1])) *1e9))
         else:
-          self.nanos = int(round(float('0{0}'.format(value[pos: -1])) *1e9))
+          nanos = int(round(float('0{0}'.format(value[pos: -1])) *1e9))
+      _CheckDurationValid(seconds, nanos)
+      self.seconds = seconds
+      self.nanos = nanos
     except ValueError:
       raise ParseError(
           'Couldn\'t parse duration: {0}.'.format(value))
@@ -359,6 +364,17 @@ class Duration(object):
     self.nanos = nanos
 
 
+def _CheckDurationValid(seconds, nanos):
+  if seconds < -_DURATION_SECONDS_MAX or seconds > _DURATION_SECONDS_MAX:
+    raise Error(
+        'Duration is not valid: Seconds {0} must be in range '
+        '[-315576000000, 315576000000].'.format(seconds))
+  if nanos <= -_NANOS_PER_SECOND or nanos >= _NANOS_PER_SECOND:
+    raise Error(
+        'Duration is not valid: Nanos {0} must be in range '
+        '[-999999999, 999999999].'.format(nanos))
+
+
 def _RoundTowardZero(value, divider):
   """Truncates the remainder part after division."""
   # For some languanges, the sign of the remainder is implementation
@@ -379,13 +395,16 @@ class FieldMask(object):
 
   def ToJsonString(self):
     """Converts FieldMask to string according to proto3 JSON spec."""
-    return ','.join(self.paths)
+    camelcase_paths = []
+    for path in self.paths:
+      camelcase_paths.append(_SnakeCaseToCamelCase(path))
+    return ','.join(camelcase_paths)
 
   def FromJsonString(self, value):
     """Converts string to FieldMask according to proto3 JSON spec."""
     self.Clear()
     for path in value.split(','):
-      self.paths.append(path)
+      self.paths.append(_CamelCaseToSnakeCase(path))
 
   def IsValidForDescriptor(self, message_descriptor):
     """Checks whether the FieldMask is valid for Message Descriptor."""
@@ -472,6 +491,48 @@ def _CheckFieldMaskMessage(message):
         message_descriptor.full_name))
 
 
+def _SnakeCaseToCamelCase(path_name):
+  """Converts a path name from snake_case to camelCase."""
+  result = []
+  after_underscore = False
+  for c in path_name:
+    if c.isupper():
+      raise Error('Fail to print FieldMask to Json string: Path name '
+                  '{0} must not contain uppercase letters.'.format(path_name))
+    if after_underscore:
+      if c.islower():
+        result.append(c.upper())
+        after_underscore = False
+      else:
+        raise Error('Fail to print FieldMask to Json string: The '
+                    'character after a "_" must be a lowercase letter '
+                    'in path name {0}.'.format(path_name))
+    elif c == '_':
+      after_underscore = True
+    else:
+      result += c
+
+  if after_underscore:
+    raise Error('Fail to print FieldMask to Json string: Trailing "_" '
+                'in path name {0}.'.format(path_name))
+  return ''.join(result)
+
+
+def _CamelCaseToSnakeCase(path_name):
+  """Converts a field name from camelCase to snake_case."""
+  result = []
+  for c in path_name:
+    if c == '_':
+      raise ParseError('Fail to parse FieldMask: Path name '
+                       '{0} must not contain "_"s.'.format(path_name))
+    if c.isupper():
+      result += '_'
+      result += c.lower()
+    else:
+      result += c
+  return ''.join(result)
+
+
 class _FieldMaskTree(object):
   """Represents a FieldMask in a tree structure.