Mercurial > hg
annotate mercurial/revsetlang.py @ 31553:56acc4250900
scmutil: add a simple key-value file helper
The purpose of the added class is to serve purposes like save files of shelve
or state files of shelve, rebase and histedit. Keys of these files can be
alphanumeric and start with letters, while values must not contain newlines.
In light of Mercurial's reluctancy to use Python's json module, this tries
to provide a reasonable alternative for a non-nested named data.
Comparing to current approach of storing state in plain text files, where
semantic meaning of lines of text is only determined by their oreder,
simple key-value file allows for reordering lines and thus helps handle
optional values.
Initial use-case I see for this is obs-shelve's shelve files. Later we
can possibly migrate state files to this approach.
The test is in a new file beause I did not figure out where to put it
within existing test suite. If you give me a better idea, I will gladly
follow it.
author | Kostia Balytskyi <ikostia@fb.com> |
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date | Fri, 10 Mar 2017 14:33:42 -0800 |
parents | 80c8a6db450d |
children | 553ad16b274f |
rev | line source |
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1 # revsetlang.py - parser, tokenizer and utility for revision set language |
11275 | 2 # |
3 # Copyright 2010 Matt Mackall <mpm@selenic.com> | |
4 # | |
5 # This software may be used and distributed according to the terms of the | |
6 # GNU General Public License version 2 or any later version. | |
7 | |
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8 from __future__ import absolute_import |
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9 |
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10 import string |
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11 |
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12 from .i18n import _ |
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13 from . import ( |
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14 error, |
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15 node, |
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16 parser, |
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17 pycompat, |
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18 ) |
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20 elements = { | |
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21 # token-type: binding-strength, primary, prefix, infix, suffix |
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22 "(": (21, None, ("group", 1, ")"), ("func", 1, ")"), None), |
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23 "##": (20, None, None, ("_concat", 20), None), |
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24 "~": (18, None, None, ("ancestor", 18), None), |
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25 "^": (18, None, None, ("parent", 18), "parentpost"), |
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26 "-": (5, None, ("negate", 19), ("minus", 5), None), |
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27 "::": (17, None, ("dagrangepre", 17), ("dagrange", 17), "dagrangepost"), |
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28 "..": (17, None, ("dagrangepre", 17), ("dagrange", 17), "dagrangepost"), |
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29 ":": (15, "rangeall", ("rangepre", 15), ("range", 15), "rangepost"), |
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30 "not": (10, None, ("not", 10), None, None), |
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31 "!": (10, None, ("not", 10), None, None), |
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32 "and": (5, None, None, ("and", 5), None), |
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33 "&": (5, None, None, ("and", 5), None), |
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34 "%": (5, None, None, ("only", 5), "onlypost"), |
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35 "or": (4, None, None, ("or", 4), None), |
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36 "|": (4, None, None, ("or", 4), None), |
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37 "+": (4, None, None, ("or", 4), None), |
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38 "=": (3, None, None, ("keyvalue", 3), None), |
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39 ",": (2, None, None, ("list", 2), None), |
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40 ")": (0, None, None, None, None), |
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41 "symbol": (0, "symbol", None, None, None), |
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42 "string": (0, "string", None, None, None), |
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43 "end": (0, None, None, None, None), |
11275 | 44 } |
45 | |
46 keywords = set(['and', 'or', 'not']) | |
47 | |
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48 _quoteletters = set(['"', "'"]) |
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49 _simpleopletters = set(pycompat.iterbytestr("():=,-|&+!~^%")) |
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50 |
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51 # default set of valid characters for the initial letter of symbols |
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52 _syminitletters = set(pycompat.iterbytestr( |
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53 string.ascii_letters.encode('ascii') + |
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54 string.digits.encode('ascii') + |
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55 '._@')) | set(map(pycompat.bytechr, xrange(128, 256))) |
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56 |
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57 # default set of valid characters for non-initial letters of symbols |
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58 _symletters = _syminitletters | set(pycompat.iterbytestr('-/')) |
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59 |
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60 def tokenize(program, lookup=None, syminitletters=None, symletters=None): |
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61 ''' |
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62 Parse a revset statement into a stream of tokens |
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63 |
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64 ``syminitletters`` is the set of valid characters for the initial |
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65 letter of symbols. |
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66 |
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67 By default, character ``c`` is recognized as valid for initial |
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68 letter of symbols, if ``c.isalnum() or c in '._@' or ord(c) > 127``. |
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69 |
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70 ``symletters`` is the set of valid characters for non-initial |
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71 letters of symbols. |
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72 |
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73 By default, character ``c`` is recognized as valid for non-initial |
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74 letters of symbols, if ``c.isalnum() or c in '-._/@' or ord(c) > 127``. |
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75 |
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76 Check that @ is a valid unquoted token character (issue3686): |
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77 >>> list(tokenize("@::")) |
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78 [('symbol', '@', 0), ('::', None, 1), ('end', None, 3)] |
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79 |
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80 ''' |
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81 program = pycompat.bytestr(program) |
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82 if syminitletters is None: |
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83 syminitletters = _syminitletters |
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84 if symletters is None: |
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85 symletters = _symletters |
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86 |
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87 if program and lookup: |
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88 # attempt to parse old-style ranges first to deal with |
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89 # things like old-tag which contain query metacharacters |
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90 parts = program.split(':', 1) |
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91 if all(lookup(sym) for sym in parts if sym): |
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92 if parts[0]: |
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93 yield ('symbol', parts[0], 0) |
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94 if len(parts) > 1: |
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95 s = len(parts[0]) |
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96 yield (':', None, s) |
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97 if parts[1]: |
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98 yield ('symbol', parts[1], s + 1) |
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99 yield ('end', None, len(program)) |
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100 return |
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101 |
11275 | 102 pos, l = 0, len(program) |
103 while pos < l: | |
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104 c = program[pos] |
11275 | 105 if c.isspace(): # skip inter-token whitespace |
106 pass | |
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107 elif c == ':' and program[pos:pos + 2] == '::': # look ahead carefully |
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108 yield ('::', None, pos) |
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109 pos += 1 # skip ahead |
11275 | 110 elif c == '.' and program[pos:pos + 2] == '..': # look ahead carefully |
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111 yield ('..', None, pos) |
11275 | 112 pos += 1 # skip ahead |
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113 elif c == '#' and program[pos:pos + 2] == '##': # look ahead carefully |
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114 yield ('##', None, pos) |
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115 pos += 1 # skip ahead |
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116 elif c in _simpleopletters: # handle simple operators |
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117 yield (c, None, pos) |
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118 elif (c in _quoteletters or c == 'r' and |
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119 program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings |
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120 if c == 'r': |
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121 pos += 1 |
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122 c = program[pos] |
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123 decode = lambda x: x |
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124 else: |
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125 decode = parser.unescapestr |
11275 | 126 pos += 1 |
127 s = pos | |
128 while pos < l: # find closing quote | |
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129 d = program[pos] |
11275 | 130 if d == '\\': # skip over escaped characters |
131 pos += 2 | |
132 continue | |
133 if d == c: | |
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134 yield ('string', decode(program[s:pos]), s) |
11275 | 135 break |
136 pos += 1 | |
137 else: | |
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138 raise error.ParseError(_("unterminated string"), s) |
16683 | 139 # gather up a symbol/keyword |
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140 elif c in syminitletters: |
11275 | 141 s = pos |
142 pos += 1 | |
143 while pos < l: # find end of symbol | |
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144 d = program[pos] |
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145 if d not in symletters: |
11275 | 146 break |
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147 if d == '.' and program[pos - 1] == '.': # special case for .. |
11275 | 148 pos -= 1 |
149 break | |
150 pos += 1 | |
151 sym = program[s:pos] | |
152 if sym in keywords: # operator keywords | |
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153 yield (sym, None, s) |
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154 elif '-' in sym: |
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155 # some jerk gave us foo-bar-baz, try to check if it's a symbol |
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156 if lookup and lookup(sym): |
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157 # looks like a real symbol |
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158 yield ('symbol', sym, s) |
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159 else: |
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160 # looks like an expression |
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161 parts = sym.split('-') |
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162 for p in parts[:-1]: |
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163 if p: # possible consecutive - |
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164 yield ('symbol', p, s) |
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165 s += len(p) |
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166 yield ('-', None, pos) |
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167 s += 1 |
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168 if parts[-1]: # possible trailing - |
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169 yield ('symbol', parts[-1], s) |
11275 | 170 else: |
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171 yield ('symbol', sym, s) |
11275 | 172 pos -= 1 |
173 else: | |
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174 raise error.ParseError(_("syntax error in revset '%s'") % |
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175 program, pos) |
11275 | 176 pos += 1 |
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177 yield ('end', None, pos) |
11275 | 178 |
179 # helpers | |
180 | |
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181 _notset = object() |
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182 |
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183 def getsymbol(x): |
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184 if x and x[0] == 'symbol': |
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185 return x[1] |
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186 raise error.ParseError(_('not a symbol')) |
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187 |
11275 | 188 def getstring(x, err): |
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189 if x and (x[0] == 'string' or x[0] == 'symbol'): |
11275 | 190 return x[1] |
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191 raise error.ParseError(err) |
11275 | 192 |
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193 def getinteger(x, err, default=_notset): |
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194 if not x and default is not _notset: |
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195 return default |
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196 try: |
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197 return int(getstring(x, err)) |
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198 except ValueError: |
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199 raise error.ParseError(err) |
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200 |
11275 | 201 def getlist(x): |
202 if not x: | |
203 return [] | |
204 if x[0] == 'list': | |
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205 return list(x[1:]) |
11275 | 206 return [x] |
207 | |
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208 def getrange(x, err): |
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209 if not x: |
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210 raise error.ParseError(err) |
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211 op = x[0] |
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212 if op == 'range': |
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213 return x[1], x[2] |
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214 elif op == 'rangepre': |
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215 return None, x[1] |
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216 elif op == 'rangepost': |
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217 return x[1], None |
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218 elif op == 'rangeall': |
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219 return None, None |
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220 raise error.ParseError(err) |
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221 |
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222 def getargs(x, min, max, err): |
11275 | 223 l = getlist(x) |
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224 if len(l) < min or (max >= 0 and len(l) > max): |
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225 raise error.ParseError(err) |
11275 | 226 return l |
227 | |
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228 def getargsdict(x, funcname, keys): |
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229 return parser.buildargsdict(getlist(x), funcname, parser.splitargspec(keys), |
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230 keyvaluenode='keyvalue', keynode='symbol') |
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231 |
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232 # Constants for ordering requirement, used in _analyze(): |
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233 # |
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234 # If 'define', any nested functions and operations can change the ordering of |
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235 # the entries in the set. If 'follow', any nested functions and operations |
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236 # should take the ordering specified by the first operand to the '&' operator. |
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237 # |
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238 # For instance, |
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239 # |
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240 # X & (Y | Z) |
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241 # ^ ^^^^^^^ |
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242 # | follow |
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243 # define |
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244 # |
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245 # will be evaluated as 'or(y(x()), z(x()))', where 'x()' can change the order |
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246 # of the entries in the set, but 'y()', 'z()' and 'or()' shouldn't. |
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247 # |
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248 # 'any' means the order doesn't matter. For instance, |
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249 # |
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250 # X & !Y |
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251 # ^ |
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252 # any |
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253 # |
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254 # 'y()' can either enforce its ordering requirement or take the ordering |
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255 # specified by 'x()' because 'not()' doesn't care the order. |
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256 # |
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257 # Transition of ordering requirement: |
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258 # |
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259 # 1. starts with 'define' |
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260 # 2. shifts to 'follow' by 'x & y' |
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261 # 3. changes back to 'define' on function call 'f(x)' or function-like |
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262 # operation 'x (f) y' because 'f' may have its own ordering requirement |
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263 # for 'x' and 'y' (e.g. 'first(x)') |
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264 # |
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265 anyorder = 'any' # don't care the order |
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266 defineorder = 'define' # should define the order |
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267 followorder = 'follow' # must follow the current order |
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268 |
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269 # transition table for 'x & y', from the current expression 'x' to 'y' |
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270 _tofolloworder = { |
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271 anyorder: anyorder, |
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272 defineorder: followorder, |
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273 followorder: followorder, |
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274 } |
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275 |
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276 def _matchonly(revs, bases): |
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277 """ |
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278 >>> f = lambda *args: _matchonly(*map(parse, args)) |
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279 >>> f('ancestors(A)', 'not ancestors(B)') |
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280 ('list', ('symbol', 'A'), ('symbol', 'B')) |
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281 """ |
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282 if (revs is not None |
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283 and revs[0] == 'func' |
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284 and getsymbol(revs[1]) == 'ancestors' |
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285 and bases is not None |
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286 and bases[0] == 'not' |
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287 and bases[1][0] == 'func' |
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288 and getsymbol(bases[1][1]) == 'ancestors'): |
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289 return ('list', revs[2], bases[1][2]) |
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290 |
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291 def _fixops(x): |
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292 """Rewrite raw parsed tree to resolve ambiguous syntax which cannot be |
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293 handled well by our simple top-down parser""" |
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294 if not isinstance(x, tuple): |
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295 return x |
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296 |
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297 op = x[0] |
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298 if op == 'parent': |
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299 # x^:y means (x^) : y, not x ^ (:y) |
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300 # x^: means (x^) :, not x ^ (:) |
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301 post = ('parentpost', x[1]) |
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302 if x[2][0] == 'dagrangepre': |
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303 return _fixops(('dagrange', post, x[2][1])) |
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304 elif x[2][0] == 'rangepre': |
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305 return _fixops(('range', post, x[2][1])) |
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306 elif x[2][0] == 'rangeall': |
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307 return _fixops(('rangepost', post)) |
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308 elif op == 'or': |
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309 # make number of arguments deterministic: |
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310 # x + y + z -> (or x y z) -> (or (list x y z)) |
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311 return (op, _fixops(('list',) + x[1:])) |
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312 |
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313 return (op,) + tuple(_fixops(y) for y in x[1:]) |
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314 |
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315 def _analyze(x, order): |
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316 if x is None: |
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317 return x |
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318 |
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319 op = x[0] |
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320 if op == 'minus': |
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321 return _analyze(('and', x[1], ('not', x[2])), order) |
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322 elif op == 'only': |
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323 t = ('func', ('symbol', 'only'), ('list', x[1], x[2])) |
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324 return _analyze(t, order) |
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325 elif op == 'onlypost': |
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326 return _analyze(('func', ('symbol', 'only'), x[1]), order) |
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327 elif op == 'dagrangepre': |
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328 return _analyze(('func', ('symbol', 'ancestors'), x[1]), order) |
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329 elif op == 'dagrangepost': |
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330 return _analyze(('func', ('symbol', 'descendants'), x[1]), order) |
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331 elif op == 'negate': |
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332 s = getstring(x[1], _("can't negate that")) |
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333 return _analyze(('string', '-' + s), order) |
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334 elif op in ('string', 'symbol'): |
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335 return x |
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336 elif op == 'and': |
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337 ta = _analyze(x[1], order) |
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338 tb = _analyze(x[2], _tofolloworder[order]) |
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339 return (op, ta, tb, order) |
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340 elif op == 'or': |
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341 return (op, _analyze(x[1], order), order) |
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342 elif op == 'not': |
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343 return (op, _analyze(x[1], anyorder), order) |
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344 elif op == 'rangeall': |
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345 return (op, None, order) |
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346 elif op in ('rangepre', 'rangepost', 'parentpost'): |
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347 return (op, _analyze(x[1], defineorder), order) |
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348 elif op == 'group': |
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349 return _analyze(x[1], order) |
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350 elif op in ('dagrange', 'range', 'parent', 'ancestor'): |
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351 ta = _analyze(x[1], defineorder) |
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352 tb = _analyze(x[2], defineorder) |
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353 return (op, ta, tb, order) |
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354 elif op == 'list': |
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355 return (op,) + tuple(_analyze(y, order) for y in x[1:]) |
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356 elif op == 'keyvalue': |
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357 return (op, x[1], _analyze(x[2], order)) |
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358 elif op == 'func': |
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359 f = getsymbol(x[1]) |
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360 d = defineorder |
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361 if f == 'present': |
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362 # 'present(set)' is known to return the argument set with no |
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363 # modification, so forward the current order to its argument |
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364 d = order |
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365 return (op, x[1], _analyze(x[2], d), order) |
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366 raise ValueError('invalid operator %r' % op) |
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367 |
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368 def analyze(x, order=defineorder): |
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369 """Transform raw parsed tree to evaluatable tree which can be fed to |
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370 optimize() or getset() |
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371 |
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372 All pseudo operations should be mapped to real operations or functions |
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373 defined in methods or symbols table respectively. |
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Yuya Nishihara <yuya@tcha.org>
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|
374 |
90455e7bf543
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Yuya Nishihara <yuya@tcha.org>
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diff
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|
375 'order' specifies how the current expression 'x' is ordered (see the |
90455e7bf543
revset: infer ordering flag to teach if operation should define/follow order
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diff
changeset
|
376 constants defined above.) |
29905
371c2a39eead
revset: make analyze() a separate step from optimize()
Yuya Nishihara <yuya@tcha.org>
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29904
diff
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|
377 """ |
29930
90455e7bf543
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parents:
29929
diff
changeset
|
378 return _analyze(x, order) |
29905
371c2a39eead
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Yuya Nishihara <yuya@tcha.org>
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diff
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|
379 |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
380 def _optimize(x, small): |
13031
3da456d0c885
code style: prefer 'is' and 'is not' tests with singletons
Martin Geisler <mg@aragost.com>
parents:
12936
diff
changeset
|
381 if x is None: |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
382 return 0, x |
62ccf4cd6e7f
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Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
383 |
11275 | 384 smallbonus = 1 |
385 if small: | |
386 smallbonus = .5 | |
387 | |
388 op = x[0] | |
29904
e4b4168a4f1c
revset: extract tree transformation from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29898
diff
changeset
|
389 if op in ('string', 'symbol'): |
11279
62ccf4cd6e7f
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Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
390 return smallbonus, x # single revisions are small |
16859
eeb464ed7275
revset: drop unreachable code
Bryan O'Sullivan <bryano@fb.com>
parents:
16838
diff
changeset
|
391 elif op == 'and': |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
392 wa, ta = _optimize(x[1], True) |
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
393 wb, tb = _optimize(x[2], True) |
29932
09a84e747c88
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
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|
394 order = x[3] |
29116
0c9b05dae010
revset: unnest isonly() closure from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29098
diff
changeset
|
395 w = min(wa, wb) |
20499
2efd608473fb
revset: optimize missing ancestor expressions
Siddharth Agarwal <sid0@fb.com>
parents:
20498
diff
changeset
|
396 |
2efd608473fb
revset: optimize missing ancestor expressions
Siddharth Agarwal <sid0@fb.com>
parents:
20498
diff
changeset
|
397 # (::x and not ::y)/(not ::y and ::x) have a fast path |
29117
7828cadd2873
revset: construct arguments of only() against matched tree
Yuya Nishihara <yuya@tcha.org>
parents:
29116
diff
changeset
|
398 tm = _matchonly(ta, tb) or _matchonly(tb, ta) |
7828cadd2873
revset: construct arguments of only() against matched tree
Yuya Nishihara <yuya@tcha.org>
parents:
29116
diff
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|
399 if tm: |
29932
09a84e747c88
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Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
400 return w, ('func', ('symbol', 'only'), tm, order) |
20499
2efd608473fb
revset: optimize missing ancestor expressions
Siddharth Agarwal <sid0@fb.com>
parents:
20498
diff
changeset
|
401 |
28217
d2ac8b57a75d
revset: use smartset minus operator
Durham Goode <durham@fb.com>
parents:
28139
diff
changeset
|
402 if tb is not None and tb[0] == 'not': |
29932
09a84e747c88
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Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
403 return wa, ('difference', ta, tb[1], order) |
28217
d2ac8b57a75d
revset: use smartset minus operator
Durham Goode <durham@fb.com>
parents:
28139
diff
changeset
|
404 |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
405 if wa > wb: |
29932
09a84e747c88
revset: pass around ordering flags to operations
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parents:
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diff
changeset
|
406 return w, (op, tb, ta, order) |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
407 return w, (op, ta, tb, order) |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
408 elif op == 'or': |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
409 # fast path for machine-generated expression, that is likely to have |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
410 # lots of trivial revisions: 'a + b + c()' to '_list(a b) + c()' |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
411 order = x[2] |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
412 ws, ts, ss = [], [], [] |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
413 def flushss(): |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
414 if not ss: |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
415 return |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
416 if len(ss) == 1: |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
417 w, t = ss[0] |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
418 else: |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
419 s = '\0'.join(t[1] for w, t in ss) |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
420 y = ('func', ('symbol', '_list'), ('string', s), order) |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
421 w, t = _optimize(y, False) |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
422 ws.append(w) |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
423 ts.append(t) |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
424 del ss[:] |
29929
b3845cab4ddc
revset: wrap arguments of 'or' by 'list' node
Yuya Nishihara <yuya@tcha.org>
parents:
29922
diff
changeset
|
425 for y in getlist(x[1]): |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
426 w, t = _optimize(y, False) |
25996
b12e00a05d57
revset: prevent crash caused by empty group expression while optimizing "or"
Yuya Nishihara <yuya@tcha.org>
parents:
25995
diff
changeset
|
427 if t is not None and (t[0] == 'string' or t[0] == 'symbol'): |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
428 ss.append((w, t)) |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
429 continue |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
430 flushss() |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
431 ws.append(w) |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
432 ts.append(t) |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
433 flushss() |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
434 if len(ts) == 1: |
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
Yuya Nishihara <yuya@tcha.org>
parents:
25342
diff
changeset
|
435 return ws[0], ts[0] # 'or' operation is fully optimized out |
25307
4d1e56b29a91
revset: comment that we can't swap 'or' operands by weight
Yuya Nishihara <yuya@tcha.org>
parents:
25270
diff
changeset
|
436 # we can't reorder trees by weight because it would change the order. |
4d1e56b29a91
revset: comment that we can't swap 'or' operands by weight
Yuya Nishihara <yuya@tcha.org>
parents:
25270
diff
changeset
|
437 # ("sort(a + b)" == "sort(b + a)", but "a + b" != "b + a") |
25309
b333ca94403d
revset: reduce nesting of chained 'or' operations (issue4624)
Yuya Nishihara <yuya@tcha.org>
parents:
25308
diff
changeset
|
438 # ts = tuple(t for w, t in sorted(zip(ws, ts), key=lambda wt: wt[0])) |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
439 return max(ws), (op, ('list',) + tuple(ts), order) |
11275 | 440 elif op == 'not': |
25191
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
25149
diff
changeset
|
441 # Optimize not public() to _notpublic() because we have a fast version |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
442 if x[1][:3] == ('func', ('symbol', 'public'), None): |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
443 order = x[1][3] |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
444 newsym = ('func', ('symbol', '_notpublic'), None, order) |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
445 o = _optimize(newsym, not small) |
25191
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
25149
diff
changeset
|
446 return o[0], o[1] |
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
25149
diff
changeset
|
447 else: |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
448 o = _optimize(x[1], not small) |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
449 order = x[2] |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
450 return o[0], (op, o[1], order) |
30803
d389f19f14aa
revset: do not transform range* operators in parsed tree
Yuya Nishihara <yuya@tcha.org>
parents:
30802
diff
changeset
|
451 elif op == 'rangeall': |
d389f19f14aa
revset: do not transform range* operators in parsed tree
Yuya Nishihara <yuya@tcha.org>
parents:
30802
diff
changeset
|
452 return smallbonus, x |
d389f19f14aa
revset: do not transform range* operators in parsed tree
Yuya Nishihara <yuya@tcha.org>
parents:
30802
diff
changeset
|
453 elif op in ('rangepre', 'rangepost', 'parentpost'): |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
454 o = _optimize(x[1], small) |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
455 order = x[2] |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
456 return o[0], (op, o[1], order) |
29898
7203400f91b0
revset: do not partial-match operator and function names in optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29897
diff
changeset
|
457 elif op in ('dagrange', 'range', 'parent', 'ancestor'): |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
458 wa, ta = _optimize(x[1], small) |
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
459 wb, tb = _optimize(x[2], small) |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
460 order = x[3] |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
461 return wa + wb, (op, ta, tb, order) |
27987
b19d8d5d6b51
revset: flatten chained 'list' operations (aka function args) (issue5072)
Yuya Nishihara <yuya@tcha.org>
parents:
27945
diff
changeset
|
462 elif op == 'list': |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
463 ws, ts = zip(*(_optimize(y, small) for y in x[1:])) |
27987
b19d8d5d6b51
revset: flatten chained 'list' operations (aka function args) (issue5072)
Yuya Nishihara <yuya@tcha.org>
parents:
27945
diff
changeset
|
464 return sum(ws), (op,) + ts |
29766
5004ef47f437
revset: fix keyword arguments to go through optimization process
Yuya Nishihara <yuya@tcha.org>
parents:
29646
diff
changeset
|
465 elif op == 'keyvalue': |
5004ef47f437
revset: fix keyword arguments to go through optimization process
Yuya Nishihara <yuya@tcha.org>
parents:
29646
diff
changeset
|
466 w, t = _optimize(x[2], small) |
5004ef47f437
revset: fix keyword arguments to go through optimization process
Yuya Nishihara <yuya@tcha.org>
parents:
29646
diff
changeset
|
467 return w, (op, x[1], t) |
11275 | 468 elif op == 'func': |
29441
9e8d258708bb
revset: check invalid function syntax "func-name"() explicitly
Yuya Nishihara <yuya@tcha.org>
parents:
29425
diff
changeset
|
469 f = getsymbol(x[1]) |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
470 wa, ta = _optimize(x[2], small) |
29898
7203400f91b0
revset: do not partial-match operator and function names in optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29897
diff
changeset
|
471 if f in ('author', 'branch', 'closed', 'date', 'desc', 'file', 'grep', |
30205
b4074417b661
revset: optimize for destination() being "inefficient"
Mads Kiilerich <madski@unity3d.com>
parents:
30179
diff
changeset
|
472 'keyword', 'outgoing', 'user', 'destination'): |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
473 w = 10 # slow |
29898
7203400f91b0
revset: do not partial-match operator and function names in optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29897
diff
changeset
|
474 elif f in ('modifies', 'adds', 'removes'): |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
475 w = 30 # slower |
11275 | 476 elif f == "contains": |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
477 w = 100 # very slow |
11275 | 478 elif f == "ancestor": |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
479 w = 1 * smallbonus |
30700
323f0c4b43f4
revset: categorize wdir() as very fast function
Yuya Nishihara <yuya@tcha.org>
parents:
30699
diff
changeset
|
480 elif f in ('reverse', 'limit', 'first', 'wdir', '_intlist'): |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
481 w = 0 |
29898
7203400f91b0
revset: do not partial-match operator and function names in optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29897
diff
changeset
|
482 elif f == "sort": |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
483 w = 10 # assume most sorts look at changelog |
11275 | 484 else: |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
changeset
|
485 w = 1 |
29932
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
486 order = x[3] |
09a84e747c88
revset: pass around ordering flags to operations
Yuya Nishihara <yuya@tcha.org>
parents:
29931
diff
changeset
|
487 return w + wa, (op, x[1], ta, order) |
29896
104914b03b83
revset: make optimize() reject unknown operators
Yuya Nishihara <yuya@tcha.org>
parents:
29814
diff
changeset
|
488 raise ValueError('invalid operator %r' % op) |
11275 | 489 |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
Yuya Nishihara <yuya@tcha.org>
parents:
29118
diff
changeset
|
490 def optimize(tree): |
29905
371c2a39eead
revset: make analyze() a separate step from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29904
diff
changeset
|
491 """Optimize evaluatable tree |
371c2a39eead
revset: make analyze() a separate step from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29904
diff
changeset
|
492 |
371c2a39eead
revset: make analyze() a separate step from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29904
diff
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|
493 All pseudo operations should be transformed beforehand. |
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494 """ |
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495 _weight, newtree = _optimize(tree, small=True) |
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496 return newtree |
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497 |
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498 # the set of valid characters for the initial letter of symbols in |
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499 # alias declarations and definitions |
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500 _aliassyminitletters = _syminitletters | set(pycompat.sysstr('$')) |
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501 |
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502 def _parsewith(spec, lookup=None, syminitletters=None): |
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503 """Generate a parse tree of given spec with given tokenizing options |
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504 |
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505 >>> _parsewith('foo($1)', syminitletters=_aliassyminitletters) |
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506 ('func', ('symbol', 'foo'), ('symbol', '$1')) |
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507 >>> _parsewith('$1') |
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508 Traceback (most recent call last): |
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509 ... |
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510 ParseError: ("syntax error in revset '$1'", 0) |
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511 >>> _parsewith('foo bar') |
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512 Traceback (most recent call last): |
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513 ... |
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514 ParseError: ('invalid token', 4) |
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515 """ |
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516 p = parser.parser(elements) |
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517 tree, pos = p.parse(tokenize(spec, lookup=lookup, |
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518 syminitletters=syminitletters)) |
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519 if pos != len(spec): |
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520 raise error.ParseError(_('invalid token'), pos) |
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521 return _fixops(parser.simplifyinfixops(tree, ('list', 'or'))) |
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522 |
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523 class _aliasrules(parser.basealiasrules): |
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524 """Parsing and expansion rule set of revset aliases""" |
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525 _section = _('revset alias') |
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526 |
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527 @staticmethod |
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528 def _parse(spec): |
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529 """Parse alias declaration/definition ``spec`` |
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530 |
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531 This allows symbol names to use also ``$`` as an initial letter |
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532 (for backward compatibility), and callers of this function should |
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533 examine whether ``$`` is used also for unexpected symbols or not. |
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534 """ |
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535 return _parsewith(spec, syminitletters=_aliassyminitletters) |
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536 |
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537 @staticmethod |
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538 def _trygetfunc(tree): |
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539 if tree[0] == 'func' and tree[1][0] == 'symbol': |
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540 return tree[1][1], getlist(tree[2]) |
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541 |
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542 def expandaliases(ui, tree): |
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543 aliases = _aliasrules.buildmap(ui.configitems('revsetalias')) |
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544 tree = _aliasrules.expand(aliases, tree) |
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545 # warn about problematic (but not referred) aliases |
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546 for name, alias in sorted(aliases.iteritems()): |
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547 if alias.error and not alias.warned: |
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548 ui.warn(_('warning: %s\n') % (alias.error)) |
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549 alias.warned = True |
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6a81f88758aa
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550 return tree |
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551 |
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552 def foldconcat(tree): |
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553 """Fold elements to be concatenated by `##` |
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554 """ |
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555 if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'): |
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556 return tree |
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557 if tree[0] == '_concat': |
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|
558 pending = [tree] |
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559 l = [] |
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560 while pending: |
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561 e = pending.pop() |
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562 if e[0] == '_concat': |
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563 pending.extend(reversed(e[1:])) |
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564 elif e[0] in ('string', 'symbol'): |
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565 l.append(e[1]) |
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566 else: |
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567 msg = _("\"##\" can't concatenate \"%s\" element") % (e[0]) |
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568 raise error.ParseError(msg) |
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569 return ('string', ''.join(l)) |
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570 else: |
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|
571 return tuple(foldconcat(t) for t in tree) |
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|
572 |
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diff
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|
573 def parse(spec, lookup=None): |
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574 return _parsewith(spec, lookup=lookup) |
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|
575 |
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576 def formatspec(expr, *args): |
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577 ''' |
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578 This is a convenience function for using revsets internally, and |
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579 escapes arguments appropriately. Aliases are intentionally ignored |
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580 so that intended expression behavior isn't accidentally subverted. |
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|
581 |
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|
582 Supported arguments: |
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|
583 |
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|
584 %r = revset expression, parenthesized |
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diff
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585 %d = int(arg), no quoting |
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586 %s = string(arg), escaped and single-quoted |
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587 %b = arg.branch(), escaped and single-quoted |
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588 %n = hex(arg), single-quoted |
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589 %% = a literal '%' |
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diff
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|
590 |
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591 Prefixing the type with 'l' specifies a parenthesized list of that type. |
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|
592 |
15268
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|
593 >>> formatspec('%r:: and %lr', '10 or 11', ("this()", "that()")) |
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|
594 '(10 or 11):: and ((this()) or (that()))' |
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595 >>> formatspec('%d:: and not %d::', 10, 20) |
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|
596 '10:: and not 20::' |
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|
597 >>> formatspec('%ld or %ld', [], [1]) |
15898
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|
598 "_list('') or 1" |
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|
599 >>> formatspec('keyword(%s)', 'foo\\xe9') |
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|
600 "keyword('foo\\\\xe9')" |
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diff
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|
601 >>> b = lambda: 'default' |
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|
602 >>> b.branch = b |
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|
603 >>> formatspec('branch(%b)', b) |
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|
604 "branch('default')" |
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605 >>> formatspec('root(%ls)', ['a', 'b', 'c', 'd']) |
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606 "root(_list('a\\x00b\\x00c\\x00d'))" |
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607 ''' |
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608 |
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609 def quote(s): |
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610 return repr(str(s)) |
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611 |
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612 def argtype(c, arg): |
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613 if c == 'd': |
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614 return str(int(arg)) |
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615 elif c == 's': |
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616 return quote(arg) |
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617 elif c == 'r': |
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618 parse(arg) # make sure syntax errors are confined |
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619 return '(%s)' % arg |
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620 elif c == 'n': |
16417
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621 return quote(node.hex(arg)) |
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622 elif c == 'b': |
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623 return quote(arg.branch()) |
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624 |
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625 def listexp(s, t): |
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626 l = len(s) |
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627 if l == 0: |
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628 return "_list('')" |
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629 elif l == 1: |
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630 return argtype(t, s[0]) |
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631 elif t == 'd': |
20566
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632 return "_intlist('%s')" % "\0".join(str(int(a)) for a in s) |
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633 elif t == 's': |
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634 return "_list('%s')" % "\0".join(s) |
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635 elif t == 'n': |
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0d4be103c734
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parents:
20566
diff
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636 return "_hexlist('%s')" % "\0".join(node.hex(a) for a in s) |
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637 elif t == 'b': |
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638 return "_list('%s')" % "\0".join(a.branch() for a in s) |
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639 |
15791
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Use explicit integer division
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640 m = l // 2 |
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641 return '(%s or %s)' % (listexp(s[:m], t), listexp(s[m:], t)) |
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642 |
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643 expr = pycompat.bytestr(expr) |
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644 ret = '' |
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645 pos = 0 |
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646 arg = 0 |
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647 while pos < len(expr): |
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648 c = expr[pos] |
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649 if c == '%': |
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650 pos += 1 |
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651 d = expr[pos] |
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652 if d == '%': |
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653 ret += d |
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654 elif d in 'dsnbr': |
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655 ret += argtype(d, args[arg]) |
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656 arg += 1 |
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657 elif d == 'l': |
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658 # a list of some type |
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659 pos += 1 |
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660 d = expr[pos] |
15596 | 661 ret += listexp(list(args[arg]), d) |
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662 arg += 1 |
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663 else: |
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i18n: translate abort messages
liscju <piotr.listkiewicz@gmail.com>
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664 raise error.Abort(_('unexpected revspec format character %s') |
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665 % d) |
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666 else: |
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667 ret += c |
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668 pos += 1 |
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669 |
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670 return ret |
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671 |
16218
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debugrevspec: pretty print output
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672 def prettyformat(tree): |
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diff
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673 return parser.prettyformat(tree, ('string', 'symbol')) |
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Patrick Mezard <patrick@mezard.eu>
parents:
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|
674 |
19719
2f9d5c5256ea
revset: add helper function to get revset parse tree depth
Alexander Plavin <alexander@plav.in>
parents:
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diff
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|
675 def depth(tree): |
2f9d5c5256ea
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19706
diff
changeset
|
676 if isinstance(tree, tuple): |
2f9d5c5256ea
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parents:
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diff
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|
677 return max(map(depth, tree)) + 1 |
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parents:
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diff
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|
678 else: |
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parents:
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diff
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|
679 return 0 |
2f9d5c5256ea
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Alexander Plavin <alexander@plav.in>
parents:
19706
diff
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|
680 |
19720
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Alexander Plavin <alexander@plav.in>
parents:
19719
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|
681 def funcsused(tree): |
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Alexander Plavin <alexander@plav.in>
parents:
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682 if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'): |
f0b992a9be9c
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|
683 return set() |
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parents:
19719
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684 else: |
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Alexander Plavin <alexander@plav.in>
parents:
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|
685 funcs = set() |
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Alexander Plavin <alexander@plav.in>
parents:
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686 for s in tree[1:]: |
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|
687 funcs |= funcsused(s) |
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|
688 if tree[0] == 'func': |
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689 funcs.add(tree[1][1]) |
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690 return funcs |