1 files changed, 108 insertions, 0 deletions
diff --git a/crosperf/field.py b/crosperf/field.py
new file mode 100644
index 00000000..b3cdaa23
--- /dev/null
+++ b/crosperf/field.py
@@ -0,0 +1,108 @@
+#!/usr/bin/python
+
+# Copyright 2011 Google Inc. All Rights Reserved.
+
+
+class Field(object):
+  """Class representing a Field in an experiment file."""
+
+  def __init__(self, name, required, default, inheritable, description):
+    self.name = name
+    self.required = required
+    self.assigned = False
+    self.default = default
+    self._value = default
+    self.inheritable = inheritable
+    self.description = description
+
+  def Set(self, value, parse=True):
+    if parse:
+      self._value = self._Parse(value)
+    else:
+      self._value = value
+    self.assigned = True
+
+  def Append(self, value):
+    self._value += self._Parse(value)
+    self.assigned = True
+
+  def _Parse(self, value):
+    return value
+
+  def Get(self):
+    return self._value
+
+  def GetString(self):
+    return str(self._value)
+
+
+class TextField(Field):
+  def __init__(self, name, required=False, default="", inheritable=False,
+               description=""):
+    super(TextField, self).__init__(name, required, default, inheritable,
+                                    description)
+
+  def _Parse(self, value):
+    return str(value)
+
+
+class BooleanField(Field):
+  def __init__(self, name, required=False, default=False, inheritable=False,
+               description=""):
+    super(BooleanField, self).__init__(name, required, default, inheritable,
+                                       description)
+
+  def _Parse(self, value):
+    if value.lower() == "true":
+      return True
+    elif value.lower() == "false":
+      return False
+    raise Exception("Invalid value for '%s'. Must be true or false." %
+                    self.name)
+
+
+class IntegerField(Field):
+  def __init__(self, name, required=False, default=0, inheritable=False,
+               description=""):
+    super(IntegerField, self).__init__(name, required, default, inheritable,
+                                       description)
+
+  def _Parse(self, value):
+    return int(value)
+
+
+class FloatField(Field):
+  def __init__(self, name, required=False, default=0, inheritable=False,
+               description=""):
+    super(FloatField, self).__init__(name, required, default, inheritable,
+                                     description)
+
+  def _Parse(self, value):
+    return float(value)
+
+
+class ListField(Field):
+  def __init__(self, name, required=False, default=[], inheritable=False,
+               description=""):
+    super(ListField, self).__init__(name, required, default, inheritable,
+                                    description)
+
+  def _Parse(self, value):
+    return value.split()
+
+  def GetString(self):
+    return " ".join(self._value)
+
+
+class EnumField(Field):
+  def __init__(self, name, options, required=False, default="",
+               inheritable=False, description=""):
+    super(EnumField, self).__init__(name, required, default, inheritable,
+                                    description)
+    self.options = options
+
+  def _Parse(self, value):
+    if value not in self.options:
+      raise Exception("Invalid enum value for field '%s'. Must be one of (%s)"
+                      % (self.name, ", ".join(self.options)))
+    return str(value)