# -*- 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 *

# Templates

reservedOperatorCaseTemplate = """
case operator_${{NAME}}
    expect compile_fail
    values {}

    both ""
        precision mediump float;
        precision mediump int;

        ${DECLARATIONS}

        void main()
        {
            ${SETUP}
            int value = 100;
            ${{OP}}
            ${OUTPUT}
        }
    ""
end
"""[1:-1]

# Classes

class ReservedOperatorCase(ShaderCase):
    def __init__(self, op):
        self.name = op.name
        if op.operator == "~":
            self.operation = 'value = ~value;'
        else:
            self.operation = 'value ' + op.operator + ' 1;'

    def __str__(self):
        params = {
            "NAME": self.name,
            "OP"  : self.operation
        }
        return fillTemplate(reservedOperatorCaseTemplate, params)


class Operator():
    def __init__(self, operator, name):
        self.operator = operator
        self.name = name

# Declarations

RESERVED_OPERATORS = [
    Operator("%", "modulo"),
    Operator("~", "bitwise_not"),
    Operator("<<", "bitwise_shift_left"),
    Operator(">>", "bitwise_shift_right"),
    Operator("&", "bitwise_and"),
    Operator("^", "bitwise_xor"),
    Operator("|", "bitwise_or"),
    Operator("%=", "assign_modulo"),
    Operator("<<=", "assign_shift_left"),
    Operator(">>=", "assign_shift_right"),
    Operator("&=", "assign_and"),
    Operator("^=", "assign_xor"),
    Operator("|=", "assign_or")
]

# Reserved operator usage cases

reservedOperatorCases = []

for operator in RESERVED_OPERATORS:
    reservedOperatorCases.append(ReservedOperatorCase(operator))        # Reserved operators

# Main program

if __name__ == "__main__":
    print("Generating shader case files.")
    writeAllCases("reserved_operators.test", reservedOperatorCases)