text: # -*- coding: utf-8 -*-
  
  #-------------------------------------------------------------------------
  # drawElements Quality Program utilities
  # --------------------------------------
  #
  # Copyright 2015 The Android Open Source Project
  #
  # 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.
  #
  #-------------------------------------------------------------------------
  
  import sys
  from genutil import *
  
  # \todo [arttu 2012-12-20] Current set tests variable names only, add function names, structure names, and field selectors.
  
  # Templates
  
  identifierCaseTemplate = """
  case ${{NAME}}
  	expect compile_fail
  	values {}
  
  	both ""
  		precision mediump float;
  
  		${DECLARATIONS}
  
  		void main()
  		{
  			${SETUP}
  			float ${{IDENTIFIER}} = 1.0;
  			${OUTPUT}
  		}
  	""
  end
  """[1:-1]
  
  # Classes
  
  class IdentifierCase(ShaderCase):
  	def __init__(self, name, identifier):
  		self.name		= name
  		self.identifier = identifier
  
  	def __str__(self):
  		params = {	"NAME"			: self.name,
  					"IDENTIFIER"	: self.identifier }
  		return fillTemplate(identifierCaseTemplate, params)
  
  
  # Declarations
  
  KEYWORDS = [
  	"attribute", "const", "uniform", "varying",	"break", "continue", "do", "for", "while",
  	"if", "else", "in", "out", "inout", "float", "int", "void", "bool", "true", "false",
  	"lowp", "mediump", "highp", "precision", "invariant", "discard", "return", "mat2", "mat3",
  	"mat4",	"vec2", "vec3", "vec4", "ivec2", "ivec3", "ivec4", "bvec2", "bvec3", "bvec4",
  	"sampler2D", "samplerCube",	"struct"
  ]
  
  RESERVED_KEYWORDS = [
  	"asm", "class", "union", "enum", "typedef", "template", "this", "packed", "goto", "switch",
  	"default", "inline", "noinline", "volatile", "public", "static", "extern", "external",
  	"interface", "flat", "long", "short", "double", "half", "fixed", "unsigned", "superp",
  	"input", "output", "hvec2", "hvec3", "hvec4", "dvec2", "dvec3", "dvec4", "fvec2", "fvec3",
  	"fvec4", "sampler1D", "sampler3D", "sampler1DShadow", "sampler2DShadow", "sampler2DRect",
  	"sampler3DRect", "sampler2DRectShadow", "sizeof", "cast", "namespace", "using"
  ]
  
  INVALID_IDENTIFIERS = [
  	("two_underscores_begin",	"__invalid"),
  	("two_underscores_middle",	"in__valid"),
  	("two_underscores_end",		"invalid__"),
  	("gl_begin",				"gl_Invalid"),
  	("digit",					"0123"),
  	("digit_begin",				"0invalid")
  ]
  
  # Keyword usage
  
  keywords			= []
  reservedKeywords	= []
  invalidIdentifiers	= []
  
  for keyword in KEYWORDS:
  	keywords.append(IdentifierCase(keyword, keyword))			# Keywords
  
  for keyword in RESERVED_KEYWORDS:
  	reservedKeywords.append(IdentifierCase(keyword, keyword))	# Reserved keywords
  
  for (name, identifier) in INVALID_IDENTIFIERS:
  	invalidIdentifiers.append(IdentifierCase(name, identifier)) # Invalid identifiers
  
  keywordCases = [
  	CaseGroup("keywords",				"Usage of keywords as identifiers.",			keywords),
  	CaseGroup("reserved_keywords",		"Usage of reserved keywords as identifiers.",	reservedKeywords),
  	CaseGroup("invalid_identifiers",	"Usage of invalid identifiers.",				invalidIdentifiers)
  ]
  
  # Main program
  
  if __name__ == "__main__":
  	print "Generating shader case files."
  	writeAllCases("keywords.test", keywordCases)
  