Mojo + NaCl prototype.

mojo/monacl/gen/interface_dsl.py

+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+class Interface(object):
+  def __init__(self):
+    self.functions = []
+
+  def func(self, name, returnType):
+    f = Function(self, len(self.functions), name, returnType)
+    self.functions.append(f)
+    return f
+
+  def finalize(self):
+    for f in self.functions:
+      f.finalize()
+
+class Function(object):
+  def __init__(self, parent, uid, name, returnType):
+    self.parent = parent
+    self.uid = uid
+    self.name = name
+    self.returnType = returnType
+    self.params = []
+    self.paramLUT = {}
+    self.resultParam = None
+
+  def param(self, name, paramType=None):
+    p = Param(self, len(self.params), name, paramType)
+    self.params.append(p)
+    self.paramLUT[name] = p
+    return p
+
+  def paramList(self):
+    return [param.paramType + " "+ param.name for param in self.params]
+
+  def paramDecl(self):
+    if self.params:
+      return ", ".join(self.paramList())
+    else:
+      return "void"
+
+  def finalize(self):
+    for p in self.params:
+      p.finalize()
+    self.resultParam = Param(self, len(self.params), "result")
+    self.resultParam.out(self.returnType)
+
+class Param(object):
+  def __init__(self, parent, uid, name, paramType=None):
+    self.parent = parent
+    self.uid = uid
+    self.name = name
+    self.baseType = paramType
+    self.paramType = paramType
+    self.size = None
+    self.isInput = False
+    self.isOutput = False
+    self.isArray = False
+    self.isStruct = False
+    self.isOptional = False
+
+  def getSizeParam(self):
+    assert self.size
+    return self.parent.paramLUT[self.size]
+
+  def inp(self, t):
+    self.baseType = t
+    self.paramType = t
+    self.isInput = True
+    return self
+
+  def inArray(self, t, size):
+    self.baseType = t
+    self.paramType = "const " + t + "*"
+    self.size = size
+    self.isInput = True
+    self.isArray = True
+    return self
+
+  def inStruct(self, t):
+    self.baseType = t
+    self.paramType = "const struct " + t + "*"
+    self.isInput = True
+    self.isStruct = True
+    return self
+
+  def inOut(self, t):
+    self.baseType = t
+    self.paramType = t + "*"
+    self.isInput = True
+    self.isOutput = True
+    return self
+
+  def out(self, t):
+    self.baseType = t
+    self.paramType = t + "*"
+    self.isOutput = True
+    return self
+
+  def outArray(self, t, size):
+    self.baseType = t
+    self.paramType = t + "*"
+    self.size = size
+    self.isArray = True
+    self.isOutput = True
+    return self
+
+  def optional(self):
+    assert not self.isPassedByValue()
+    self.isOptional = True
+    return self
+
+  def isScalar(self):
+    return not self.isArray and not self.isStruct
+
+  def isPassedByValue(self):
+    return not self.isOutput and self.isScalar()
+
+  def finalize(self):
+    pass