1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
|
"""SCons.Tool.yacc
Tool-specific initialization for yacc.
There normally shouldn't be any need to import this module directly.
It will usually be imported through the generic SCons.Tool.Tool()
selection method.
"""
#
# Copyright (c) 2001 - 2019 The SCons Foundation
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "src/engine/SCons/Tool/yacc.py 103260fce95bf5db1c35fb2371983087d85dd611 2019-07-13 18:25:30 bdbaddog"
import os.path
import sys
import SCons.Defaults
import SCons.Tool
import SCons.Util
from SCons.Platform.mingw import MINGW_DEFAULT_PATHS
from SCons.Platform.cygwin import CYGWIN_DEFAULT_PATHS
from SCons.Platform.win32 import CHOCO_DEFAULT_PATH
YaccAction = SCons.Action.Action("$YACCCOM", "$YACCCOMSTR")
def _yaccEmitter(target, source, env, ysuf, hsuf):
yaccflags = env.subst("$YACCFLAGS", target=target, source=source)
flags = SCons.Util.CLVar(yaccflags)
targetBase, targetExt = os.path.splitext(SCons.Util.to_String(target[0]))
if '.ym' in ysuf: # If using Objective-C
target = [targetBase + ".m"] # the extension is ".m".
# If -d is specified on the command line, yacc will emit a .h
# or .hpp file with the same name as the .c or .cpp output file.
if '-d' in flags:
target.append(targetBase + env.subst(hsuf, target=target, source=source))
# If -g is specified on the command line, yacc will emit a .vcg
# file with the same base name as the .y, .yacc, .ym or .yy file.
if "-g" in flags:
base, ext = os.path.splitext(SCons.Util.to_String(source[0]))
target.append(base + env.subst("$YACCVCGFILESUFFIX"))
# If -v is specified yacc will create the output debug file
# which is not really source for any process, but should
# be noted and also be cleaned
# Bug #2558
if "-v" in flags:
env.SideEffect(targetBase+'.output',target[0])
env.Clean(target[0],targetBase+'.output')
# With --defines and --graph, the name of the file is totally defined
# in the options.
fileGenOptions = ["--defines=", "--graph="]
for option in flags:
for fileGenOption in fileGenOptions:
l = len(fileGenOption)
if option[:l] == fileGenOption:
# A file generating option is present, so add the file
# name to the list of targets.
fileName = option[l:].strip()
target.append(fileName)
return (target, source)
def yEmitter(target, source, env):
return _yaccEmitter(target, source, env, ['.y', '.yacc'], '$YACCHFILESUFFIX')
def ymEmitter(target, source, env):
return _yaccEmitter(target, source, env, ['.ym'], '$YACCHFILESUFFIX')
def yyEmitter(target, source, env):
return _yaccEmitter(target, source, env, ['.yy'], '$YACCHXXFILESUFFIX')
def get_yacc_path(env, append_paths=False):
"""
Find the a path containing the lex or flex binaries. If a construction
environment is passed in then append the path to the ENV PATH.
"""
# save existing path to reset if we don't want to append any paths
envPath = env['ENV']['PATH']
bins = ['bison', 'yacc', 'win_bison']
for prog in bins:
bin_path = SCons.Tool.find_program_path(
env,
prog,
default_paths=CHOCO_DEFAULT_PATH + MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS )
if bin_path:
if not append_paths:
env['ENV']['PATH'] = envPath
else:
env.AppendENVPath('PATH', os.path.dirname(bin_path))
return bin_path
SCons.Warnings.Warning('lex tool requested, but lex or flex binary not found in ENV PATH')
def generate(env):
"""Add Builders and construction variables for yacc to an Environment."""
c_file, cxx_file = SCons.Tool.createCFileBuilders(env)
# C
c_file.add_action('.y', YaccAction)
c_file.add_emitter('.y', yEmitter)
c_file.add_action('.yacc', YaccAction)
c_file.add_emitter('.yacc', yEmitter)
# Objective-C
c_file.add_action('.ym', YaccAction)
c_file.add_emitter('.ym', ymEmitter)
# C++
cxx_file.add_action('.yy', YaccAction)
cxx_file.add_emitter('.yy', yyEmitter)
if sys.platform == 'win32':
bison = SCons.Tool.find_program_path(env, 'bison', default_paths=MINGW_DEFAULT_PATHS + CYGWIN_DEFAULT_PATHS )
if bison:
bison_bin_dir = os.path.dirname(bison)
env.AppendENVPath('PATH', bison_bin_dir)
else:
SCons.Warnings.Warning('yacc tool requested, but bison binary not found in ENV PATH')
if sys.platform == 'win32':
get_yacc_path(env, append_paths=True)
env["YACC"] = env.Detect(['bison', 'yacc', 'win_bison'])
else:
env["YACC"] = env.Detect(["bison", "yacc"])
env['YACCFLAGS'] = SCons.Util.CLVar('')
env['YACCCOM'] = '$YACC $YACCFLAGS -o $TARGET $SOURCES'
env['YACCHFILESUFFIX'] = '.h'
env['YACCHXXFILESUFFIX'] = '.hpp'
env['YACCVCGFILESUFFIX'] = '.vcg'
def exists(env):
return env.Detect(['bison', 'yacc'])
# Local Variables:
# tab-width:4
# indent-tabs-mode:nil
# End:
# vim: set expandtab tabstop=4 shiftwidth=4:
|
