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1#!/usr/bin/env python
2#
3# Copyright 2020 Google LLC
4#
5# Use of this source code is governed by a BSD-style license that can be
6# found in the LICENSE file.
7
8import os
9import shlex
10import subprocess
11import sys
12import tempfile
13
14batchCompile = True
15
16skslc = sys.argv[1]
17lang = sys.argv[2]
18settings = sys.argv[3]
19with open(sys.argv[4], 'r') as reader:
20    inputs = shlex.split(reader.read())
21
22def pairwise(iterable):
23    # Iterate over an array pairwise (two elements at a time).
24    a = iter(iterable)
25    return zip(a, a)
26
27def executeWorklist(input, worklist):
28    # Invoke skslc, passing in the worklist.
29    worklist.close()
30    try:
31        output = subprocess.check_output([skslc, worklist.name], stderr=subprocess.STDOUT)
32    except subprocess.CalledProcessError as err:
33        if err.returncode != 1:
34            print("### " + input + " skslc error:\n")
35            print("\n".join(err.output.splitlines()))
36            sys.exit(err.returncode)
37        pass  # Compile errors (exit code 1) are expected and normal in test code
38
39    # Delete the worklist file now that execution is complete.
40    os.remove(worklist.name)
41
42def makeEmptyFile(path):
43    try:
44        open(path, 'wb').close()
45    except OSError:
46        pass
47
48def extensionForSpirvAsm(ext):
49    return ext if (ext == '.frag' or ext == '.vert') else '.frag'
50
51if settings != "--settings" and settings != "--nosettings":
52    sys.exit("### Expected --settings or --nosettings, got " + settings)
53
54targets = []
55worklist = tempfile.NamedTemporaryFile(suffix='.worklist', delete=False, mode='w')
56
57# The `inputs` array pairs off input files with their matching output directory, e.g.:
58#     //skia/tests/sksl/shared/test.sksl
59#     //skia/tests/sksl/shared/golden/
60#     //skia/tests/sksl/intrinsics/abs.sksl
61#     //skia/tests/sksl/intrinsics/golden/
62#     ... (etc) ...
63# Here we loop over these inputs and convert them into a worklist file for skslc.
64for input, targetDir in pairwise(inputs):
65    noExt, ext = os.path.splitext(input)
66    head, tail = os.path.split(noExt)
67    if not os.path.isdir(targetDir):
68        os.mkdir(targetDir)
69
70    target = os.path.join(targetDir, tail)
71    if settings == "--nosettings":
72        target += "StandaloneSettings"
73
74    targets.append(target)
75
76    if lang == "--glsl":
77        worklist.write(input + "\n")
78        worklist.write(target + ".glsl\n")
79        worklist.write(settings + "\n\n")
80    elif lang == "--metal":
81        worklist.write(input + "\n")
82        worklist.write(target + ".metal\n")
83        worklist.write(settings + "\n\n")
84    elif lang == "--spirv":
85        worklist.write(input + "\n")
86        worklist.write(target + ".asm" + extensionForSpirvAsm(ext) + "\n")
87        worklist.write(settings + "\n\n")
88    elif lang == "--skvm":
89        worklist.write(input + "\n")
90        worklist.write(target + ".skvm\n")
91        worklist.write(settings + "\n\n")
92    elif lang == "--stage":
93        worklist.write(input + "\n")
94        worklist.write(target + ".stage\n")
95        worklist.write(settings + "\n\n")
96    else:
97        sys.exit("### Expected one of: --glsl --metal --spirv --skvm --stage --dsl, got " + lang)
98
99    # Compile items one at a time.
100    if not batchCompile:
101        executeWorklist(input, worklist)
102        worklist = tempfile.NamedTemporaryFile(suffix='.worklist', delete=False, mode='w')
103
104# Compile everything all in one go.
105if batchCompile:
106    executeWorklist("", worklist)
107else:
108    worklist.close()
109    os.remove(worklist.name)
110