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1COPYRIGHT = """\
2/*
3 * Copyright (C) 2017 Intel Corporation
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
14 * Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22 * DEALINGS IN THE SOFTWARE.
23 */
24"""
25
26import argparse
27import json
28from sys import stdout
29from mako.template import Template
30
31def collect_data(spirv, kind):
32    for x in spirv["operand_kinds"]:
33        if x["kind"] == kind:
34            operands = x
35            break
36
37    # There are some duplicate values in some of the tables (thanks guys!), so
38    # filter them out.
39    seen = set()
40    values = []
41    for x in operands["enumerants"]:
42        if x["value"] not in seen:
43            seen.add(x["value"])
44            values.append(x["enumerant"])
45
46    return (kind, values, operands["category"])
47
48def collect_opcodes(spirv):
49    seen = set()
50    values = []
51    for x in spirv["instructions"]:
52        # Handle aliases by choosing the first one in the grammar.
53        # E.g. OpDecorateString and OpDecorateStringGOOGLE share same opcode.
54        if x["opcode"] in seen:
55            continue
56        opcode = x["opcode"]
57        name = x["opname"]
58        assert name.startswith("Op")
59        values.append(name[2:])
60        seen.add(opcode)
61
62    return ("Op", values, None)
63
64def parse_args():
65    p = argparse.ArgumentParser()
66    p.add_argument("json")
67    p.add_argument("out")
68    return p.parse_args()
69
70TEMPLATE  = Template("""\
71/* DO NOT EDIT - This file is generated automatically by spirv_info_c.py script */
72
73""" + COPYRIGHT + """\
74#include "spirv_info.h"
75% for kind,values,category in info:
76
77% if category == "BitEnum":
78const char *
79spirv_${kind.lower()}_to_string(Spv${kind}Mask v)
80{
81   switch (v) {
82    % for name in values:
83    %if name != "None":
84   case Spv${kind}${name}Mask: return "Spv${kind}${name}";
85    % else:
86   case Spv${kind}MaskNone: return "Spv${kind}${name}";
87    % endif
88    % endfor
89   }
90
91   return "unknown";
92}
93% else:
94const char *
95spirv_${kind.lower()}_to_string(Spv${kind} v)
96{
97   switch (v) {
98    % for name in values:
99   case Spv${kind}${name}: return "Spv${kind}${name}";
100    % endfor
101   case Spv${kind}Max: break; /* silence warnings about unhandled enums. */
102   }
103
104   return "unknown";
105}
106% endif
107% endfor
108""")
109
110if __name__ == "__main__":
111    pargs = parse_args()
112
113    spirv_info = json.JSONDecoder().decode(open(pargs.json, "r").read())
114
115    info = [
116        collect_data(spirv_info, "AddressingModel"),
117        collect_data(spirv_info, "BuiltIn"),
118        collect_data(spirv_info, "Capability"),
119        collect_data(spirv_info, "Decoration"),
120        collect_data(spirv_info, "Dim"),
121        collect_data(spirv_info, "ExecutionMode"),
122        collect_data(spirv_info, "ExecutionModel"),
123        collect_data(spirv_info, "ImageFormat"),
124        collect_data(spirv_info, "MemoryModel"),
125        collect_data(spirv_info, "StorageClass"),
126        collect_data(spirv_info, "ImageOperands"),
127        collect_data(spirv_info, "FPRoundingMode"),
128        collect_opcodes(spirv_info),
129    ]
130
131    with open(pargs.out, 'w') as f:
132        f.write(TEMPLATE.render(info=info))
133