Mercurial > hg
annotate mercurial/revsetlang.py @ 36309:94a1ff16f362
debuginstall: do not parse editor command in posix way on Windows
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author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 17 Feb 2018 13:13:04 +0900 |
parents | 87416288be98 |
children | 2a258985ffeb |
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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 util, |
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19 ) |
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21 elements = { | |
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22 # token-type: binding-strength, primary, prefix, infix, suffix |
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23 "(": (21, None, ("group", 1, ")"), ("func", 1, ")"), None), |
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24 "[": (21, None, None, ("subscript", 1, "]"), None), |
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25 "#": (21, None, None, ("relation", 21), None), |
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26 "##": (20, None, None, ("_concat", 20), None), |
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27 "~": (18, None, None, ("ancestor", 18), None), |
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28 "^": (18, None, None, ("parent", 18), "parentpost"), |
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29 "-": (5, None, ("negate", 19), ("minus", 5), None), |
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30 "::": (17, "dagrangeall", ("dagrangepre", 17), ("dagrange", 17), |
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31 "dagrangepost"), |
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32 "..": (17, "dagrangeall", ("dagrangepre", 17), ("dagrange", 17), |
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33 "dagrangepost"), |
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34 ":": (15, "rangeall", ("rangepre", 15), ("range", 15), "rangepost"), |
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35 "not": (10, None, ("not", 10), None, None), |
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36 "!": (10, None, ("not", 10), None, None), |
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37 "and": (5, None, None, ("and", 5), None), |
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38 "&": (5, None, None, ("and", 5), None), |
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39 "%": (5, None, None, ("only", 5), "onlypost"), |
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40 "or": (4, None, None, ("or", 4), None), |
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41 "|": (4, None, None, ("or", 4), None), |
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42 "+": (4, None, None, ("or", 4), None), |
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43 "=": (3, None, None, ("keyvalue", 3), None), |
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44 ",": (2, None, None, ("list", 2), None), |
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45 ")": (0, None, None, None, None), |
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46 "]": (0, None, None, None, None), |
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47 "symbol": (0, "symbol", None, None, None), |
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48 "string": (0, "string", None, None, None), |
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49 "end": (0, None, None, None, None), |
11275 | 50 } |
51 | |
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52 keywords = {'and', 'or', 'not'} |
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54 symbols = {} |
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55 |
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56 _quoteletters = {'"', "'"} |
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57 _simpleopletters = set(pycompat.iterbytestr("()[]#:=,-|&+!~^%")) |
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58 |
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59 # default set of valid characters for the initial letter of symbols |
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60 _syminitletters = set(pycompat.iterbytestr( |
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61 string.ascii_letters.encode('ascii') + |
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62 string.digits.encode('ascii') + |
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63 '._@')) | set(map(pycompat.bytechr, xrange(128, 256))) |
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64 |
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65 # default set of valid characters for non-initial letters of symbols |
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66 _symletters = _syminitletters | set(pycompat.iterbytestr('-/')) |
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67 |
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68 def tokenize(program, lookup=None, syminitletters=None, symletters=None): |
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69 ''' |
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70 Parse a revset statement into a stream of tokens |
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71 |
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72 ``syminitletters`` is the set of valid characters for the initial |
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73 letter of symbols. |
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74 |
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75 By default, character ``c`` is recognized as valid for initial |
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76 letter of symbols, if ``c.isalnum() or c in '._@' or ord(c) > 127``. |
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77 |
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78 ``symletters`` is the set of valid characters for non-initial |
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79 letters of symbols. |
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80 |
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81 By default, character ``c`` is recognized as valid for non-initial |
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82 letters of symbols, if ``c.isalnum() or c in '-._/@' or ord(c) > 127``. |
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83 |
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84 Check that @ is a valid unquoted token character (issue3686): |
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85 >>> list(tokenize(b"@::")) |
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86 [('symbol', '@', 0), ('::', None, 1), ('end', None, 3)] |
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87 |
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88 ''' |
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89 program = pycompat.bytestr(program) |
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90 if syminitletters is None: |
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91 syminitletters = _syminitletters |
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92 if symletters is None: |
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93 symletters = _symletters |
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94 |
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95 if program and lookup: |
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96 # attempt to parse old-style ranges first to deal with |
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97 # things like old-tag which contain query metacharacters |
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98 parts = program.split(':', 1) |
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99 if all(lookup(sym) for sym in parts if sym): |
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100 if parts[0]: |
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101 yield ('symbol', parts[0], 0) |
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102 if len(parts) > 1: |
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103 s = len(parts[0]) |
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104 yield (':', None, s) |
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105 if parts[1]: |
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106 yield ('symbol', parts[1], s + 1) |
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107 yield ('end', None, len(program)) |
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108 return |
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109 |
11275 | 110 pos, l = 0, len(program) |
111 while pos < l: | |
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112 c = program[pos] |
11275 | 113 if c.isspace(): # skip inter-token whitespace |
114 pass | |
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115 elif c == ':' and program[pos:pos + 2] == '::': # look ahead carefully |
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116 yield ('::', None, pos) |
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117 pos += 1 # skip ahead |
11275 | 118 elif c == '.' and program[pos:pos + 2] == '..': # look ahead carefully |
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119 yield ('..', None, pos) |
11275 | 120 pos += 1 # skip ahead |
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revset: introduce new operator "##" to concatenate strings/symbols at runtime
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121 elif c == '#' and program[pos:pos + 2] == '##': # look ahead carefully |
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122 yield ('##', None, pos) |
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123 pos += 1 # skip ahead |
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124 elif c in _simpleopletters: # handle simple operators |
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125 yield (c, None, pos) |
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126 elif (c in _quoteletters or c == 'r' and |
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127 program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings |
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128 if c == 'r': |
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129 pos += 1 |
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130 c = program[pos] |
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131 decode = lambda x: x |
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132 else: |
26232
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133 decode = parser.unescapestr |
11275 | 134 pos += 1 |
135 s = pos | |
136 while pos < l: # find closing quote | |
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137 d = program[pos] |
11275 | 138 if d == '\\': # skip over escaped characters |
139 pos += 2 | |
140 continue | |
141 if d == c: | |
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142 yield ('string', decode(program[s:pos]), s) |
11275 | 143 break |
144 pos += 1 | |
145 else: | |
11383
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146 raise error.ParseError(_("unterminated string"), s) |
16683 | 147 # gather up a symbol/keyword |
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148 elif c in syminitletters: |
11275 | 149 s = pos |
150 pos += 1 | |
151 while pos < l: # find end of symbol | |
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152 d = program[pos] |
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153 if d not in symletters: |
11275 | 154 break |
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155 if d == '.' and program[pos - 1] == '.': # special case for .. |
11275 | 156 pos -= 1 |
157 break | |
158 pos += 1 | |
159 sym = program[s:pos] | |
160 if sym in keywords: # operator keywords | |
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161 yield (sym, None, s) |
20780
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162 elif '-' in sym: |
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163 # some jerk gave us foo-bar-baz, try to check if it's a symbol |
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164 if lookup and lookup(sym): |
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165 # looks like a real symbol |
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166 yield ('symbol', sym, s) |
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167 else: |
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168 # looks like an expression |
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169 parts = sym.split('-') |
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170 for p in parts[:-1]: |
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171 if p: # possible consecutive - |
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172 yield ('symbol', p, s) |
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173 s += len(p) |
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174 yield ('-', None, pos) |
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175 s += 1 |
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176 if parts[-1]: # possible trailing - |
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177 yield ('symbol', parts[-1], s) |
11275 | 178 else: |
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179 yield ('symbol', sym, s) |
11275 | 180 pos -= 1 |
181 else: | |
24708
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182 raise error.ParseError(_("syntax error in revset '%s'") % |
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183 program, pos) |
11275 | 184 pos += 1 |
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185 yield ('end', None, pos) |
11275 | 186 |
187 # helpers | |
188 | |
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189 _notset = object() |
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190 |
29441
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191 def getsymbol(x): |
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192 if x and x[0] == 'symbol': |
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193 return x[1] |
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194 raise error.ParseError(_('not a symbol')) |
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195 |
11275 | 196 def getstring(x, err): |
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197 if x and (x[0] == 'string' or x[0] == 'symbol'): |
11275 | 198 return x[1] |
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199 raise error.ParseError(err) |
11275 | 200 |
30802
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201 def getinteger(x, err, default=_notset): |
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202 if not x and default is not _notset: |
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203 return default |
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204 try: |
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205 return int(getstring(x, err)) |
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206 except ValueError: |
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207 raise error.ParseError(err) |
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208 |
31997
11f501f0a213
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209 def getboolean(x, err): |
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210 value = util.parsebool(getsymbol(x)) |
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211 if value is not None: |
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212 return value |
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213 raise error.ParseError(err) |
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214 |
11275 | 215 def getlist(x): |
216 if not x: | |
217 return [] | |
218 if x[0] == 'list': | |
27987
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revset: flatten chained 'list' operations (aka function args) (issue5072)
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219 return list(x[1:]) |
11275 | 220 return [x] |
221 | |
30804
4227f80f72b2
revset: abuse x:y syntax to specify line range of followlines()
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222 def getrange(x, err): |
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223 if not x: |
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224 raise error.ParseError(err) |
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225 op = x[0] |
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226 if op == 'range': |
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227 return x[1], x[2] |
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228 elif op == 'rangepre': |
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229 return None, x[1] |
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230 elif op == 'rangepost': |
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231 return x[1], None |
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232 elif op == 'rangeall': |
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233 return None, None |
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234 raise error.ParseError(err) |
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|
235 |
11339
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revset: improve filter argument handling
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|
236 def getargs(x, min, max, err): |
11275 | 237 l = getlist(x) |
16161
5a627b49b4d9
graphlog: paths/-I/-X handling requires a new revset
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238 if len(l) < min or (max >= 0 and len(l) > max): |
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239 raise error.ParseError(err) |
11275 | 240 return l |
241 | |
25767
026105c442d7
revset: rename getkwargs() to getargsdict()
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242 def getargsdict(x, funcname, keys): |
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parser: extend buildargsdict() to support variable-length positional args
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243 return parser.buildargsdict(getlist(x), funcname, parser.splitargspec(keys), |
25705
48919d246a47
revset: add function to build dict of positional and keyword arguments
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|
244 keyvaluenode='keyvalue', keynode='symbol') |
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245 |
34044
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246 # cache of {spec: raw parsed tree} built internally |
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247 _treecache = {} |
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248 |
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249 def _cachedtree(spec): |
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250 # thread safe because parse() is reentrant and dict.__setitem__() is atomic |
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251 tree = _treecache.get(spec) |
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252 if tree is None: |
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253 _treecache[spec] = tree = parse(spec) |
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254 return tree |
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255 |
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|
256 def _build(tmplspec, *repls): |
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257 """Create raw parsed tree from a template revset statement |
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258 |
34131
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doctest: bulk-replace string literals with b'' for Python 3
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259 >>> _build(b'f(_) and _', (b'string', b'1'), (b'symbol', b'2')) |
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260 ('and', ('func', ('symbol', 'f'), ('string', '1')), ('symbol', '2')) |
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261 """ |
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262 template = _cachedtree(tmplspec) |
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263 return parser.buildtree(template, ('symbol', '_'), *repls) |
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264 |
34046
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265 def _match(patspec, tree): |
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|
266 """Test if a tree matches the given pattern statement; return the matches |
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267 |
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268 >>> _match(b'f(_)', parse(b'f()')) |
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269 >>> _match(b'f(_)', parse(b'f(1)')) |
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270 [('func', ('symbol', 'f'), ('symbol', '1')), ('symbol', '1')] |
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271 >>> _match(b'f(_)', parse(b'f(1, 2)')) |
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272 """ |
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273 pattern = _cachedtree(patspec) |
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274 return parser.matchtree(pattern, tree, ('symbol', '_'), |
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275 {'keyvalue', 'list'}) |
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276 |
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277 def _matchonly(revs, bases): |
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278 return _match('ancestors(_) and not ancestors(_)', ('and', revs, bases)) |
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279 |
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280 def _fixops(x): |
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281 """Rewrite raw parsed tree to resolve ambiguous syntax which cannot be |
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282 handled well by our simple top-down parser""" |
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283 if not isinstance(x, tuple): |
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284 return x |
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285 |
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286 op = x[0] |
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287 if op == 'parent': |
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288 # x^:y means (x^) : y, not x ^ (:y) |
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289 # x^: means (x^) :, not x ^ (:) |
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290 post = ('parentpost', x[1]) |
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291 if x[2][0] == 'dagrangepre': |
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292 return _fixops(('dagrange', post, x[2][1])) |
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293 elif x[2][0] == 'dagrangeall': |
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294 return _fixops(('dagrangepost', post)) |
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295 elif x[2][0] == 'rangepre': |
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296 return _fixops(('range', post, x[2][1])) |
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297 elif x[2][0] == 'rangeall': |
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298 return _fixops(('rangepost', post)) |
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299 elif op == 'or': |
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300 # make number of arguments deterministic: |
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301 # x + y + z -> (or x y z) -> (or (list x y z)) |
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302 return (op, _fixops(('list',) + x[1:])) |
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303 elif op == 'subscript' and x[1][0] == 'relation': |
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304 # x#y[z] ternary |
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305 return _fixops(('relsubscript', x[1][1], x[1][2], x[2])) |
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306 |
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307 return (op,) + tuple(_fixops(y) for y in x[1:]) |
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308 |
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309 def _analyze(x): |
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310 if x is None: |
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311 return x |
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312 |
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313 op = x[0] |
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314 if op == 'minus': |
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315 return _analyze(_build('_ and not _', *x[1:])) |
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316 elif op == 'only': |
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317 return _analyze(_build('only(_, _)', *x[1:])) |
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318 elif op == 'onlypost': |
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319 return _analyze(_build('only(_)', x[1])) |
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320 elif op == 'dagrangeall': |
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321 raise error.ParseError(_("can't use '::' in this context")) |
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322 elif op == 'dagrangepre': |
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323 return _analyze(_build('ancestors(_)', x[1])) |
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324 elif op == 'dagrangepost': |
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325 return _analyze(_build('descendants(_)', x[1])) |
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326 elif op == 'negate': |
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327 s = getstring(x[1], _("can't negate that")) |
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328 return _analyze(('string', '-' + s)) |
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329 elif op in ('string', 'symbol'): |
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330 return x |
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331 elif op == 'rangeall': |
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332 return (op, None) |
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333 elif op in {'or', 'not', 'rangepre', 'rangepost', 'parentpost'}: |
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334 return (op, _analyze(x[1])) |
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335 elif op == 'group': |
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336 return _analyze(x[1]) |
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337 elif op in {'and', 'dagrange', 'range', 'parent', 'ancestor', 'relation', |
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338 'subscript'}: |
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339 ta = _analyze(x[1]) |
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340 tb = _analyze(x[2]) |
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341 return (op, ta, tb) |
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342 elif op == 'relsubscript': |
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343 ta = _analyze(x[1]) |
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344 tb = _analyze(x[2]) |
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345 tc = _analyze(x[3]) |
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346 return (op, ta, tb, tc) |
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347 elif op == 'list': |
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348 return (op,) + tuple(_analyze(y) for y in x[1:]) |
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349 elif op == 'keyvalue': |
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350 return (op, x[1], _analyze(x[2])) |
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351 elif op == 'func': |
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352 return (op, x[1], _analyze(x[2])) |
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353 raise ValueError('invalid operator %r' % op) |
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354 |
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355 def analyze(x): |
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356 """Transform raw parsed tree to evaluatable tree which can be fed to |
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357 optimize() or getset() |
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358 |
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359 All pseudo operations should be mapped to real operations or functions |
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360 defined in methods or symbols table respectively. |
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361 """ |
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362 return _analyze(x) |
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363 |
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364 def _optimize(x): |
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365 if x is None: |
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366 return 0, x |
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367 |
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369 if op in ('string', 'symbol'): |
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370 return 0.5, x # single revisions are small |
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371 elif op == 'and': |
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372 wa, ta = _optimize(x[1]) |
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373 wb, tb = _optimize(x[2]) |
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374 w = min(wa, wb) |
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375 |
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376 # (draft/secret/_notpublic() & ::x) have a fast path |
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377 m = _match('_() & ancestors(_)', ('and', ta, tb)) |
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378 if m and getsymbol(m[1]) in {'draft', 'secret', '_notpublic'}: |
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379 return w, _build('_phaseandancestors(_, _)', m[1], m[2]) |
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diff
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|
380 |
20499
2efd608473fb
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Siddharth Agarwal <sid0@fb.com>
parents:
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diff
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|
381 # (::x and not ::y)/(not ::y and ::x) have a fast path |
34044
b862e6fca7ac
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|
382 m = _matchonly(ta, tb) or _matchonly(tb, ta) |
b862e6fca7ac
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|
383 if m: |
b862e6fca7ac
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diff
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|
384 return w, _build('only(_, _)', *m[1:]) |
20499
2efd608473fb
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diff
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|
385 |
34046
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|
386 m = _match('not _', tb) |
f23cbca9b277
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|
387 if m: |
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diff
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|
388 return wa, ('difference', ta, m[1]) |
11279
62ccf4cd6e7f
revset: optimize the parse tree directly
Matt Mackall <mpm@selenic.com>
parents:
11278
diff
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|
389 if wa > wb: |
34020
37b82485097f
revset: do not flip "and" arguments when optimizing
Jun Wu <quark@fb.com>
parents:
34016
diff
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|
390 op = 'andsmally' |
34011
1b28525e6698
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parents:
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diff
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|
391 return w, (op, ta, tb) |
11279
62ccf4cd6e7f
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Matt Mackall <mpm@selenic.com>
parents:
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changeset
|
392 elif op == 'or': |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
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diff
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|
393 # fast path for machine-generated expression, that is likely to have |
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|
394 # lots of trivial revisions: 'a + b + c()' to '_list(a b) + c()' |
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|
395 ws, ts, ss = [], [], [] |
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|
396 def flushss(): |
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|
397 if not ss: |
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|
398 return |
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diff
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|
399 if len(ss) == 1: |
7fbef7932af9
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diff
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|
400 w, t = ss[0] |
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|
401 else: |
7fbef7932af9
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diff
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|
402 s = '\0'.join(t[1] for w, t in ss) |
34044
b862e6fca7ac
revsetlang: build optimized tree by helper function
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parents:
34020
diff
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|
403 y = _build('_list(_)', ('string', s)) |
34272
53fb09c73ba8
revset: remove "small" argument from "_optimize"
Jun Wu <quark@fb.com>
parents:
34131
diff
changeset
|
404 w, t = _optimize(y) |
25343
7fbef7932af9
revset: optimize 'or' operation of trivial revisions to a list
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diff
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|
405 ws.append(w) |
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|
406 ts.append(t) |
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revset: optimize 'or' operation of trivial revisions to a list
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diff
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|
407 del ss[:] |
29929
b3845cab4ddc
revset: wrap arguments of 'or' by 'list' node
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parents:
29922
diff
changeset
|
408 for y in getlist(x[1]): |
34272
53fb09c73ba8
revset: remove "small" argument from "_optimize"
Jun Wu <quark@fb.com>
parents:
34131
diff
changeset
|
409 w, t = _optimize(y) |
25996
b12e00a05d57
revset: prevent crash caused by empty group expression while optimizing "or"
Yuya Nishihara <yuya@tcha.org>
parents:
25995
diff
changeset
|
410 if t is not None and (t[0] == 'string' or t[0] == 'symbol'): |
25343
7fbef7932af9
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diff
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|
411 ss.append((w, t)) |
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diff
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|
412 continue |
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|
413 flushss() |
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|
414 ws.append(w) |
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|
415 ts.append(t) |
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|
416 flushss() |
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|
417 if len(ts) == 1: |
7fbef7932af9
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diff
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|
418 return ws[0], ts[0] # 'or' operation is fully optimized out |
34011
1b28525e6698
revset: remove order information from tree (API)
Jun Wu <quark@fb.com>
parents:
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diff
changeset
|
419 return max(ws), (op, ('list',) + tuple(ts)) |
11275 | 420 elif op == 'not': |
25191
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
25149
diff
changeset
|
421 # Optimize not public() to _notpublic() because we have a fast version |
34046
f23cbca9b277
revsetlang: match tree by helper function on optimize
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parents:
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diff
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|
422 if _match('public()', x[1]): |
34272
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Jun Wu <quark@fb.com>
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diff
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|
423 o = _optimize(_build('_notpublic()')) |
25191
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
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diff
changeset
|
424 return o[0], o[1] |
08d1ef09ed37
revset: optimize not public revset
Laurent Charignon <lcharignon@fb.com>
parents:
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diff
changeset
|
425 else: |
34272
53fb09c73ba8
revset: remove "small" argument from "_optimize"
Jun Wu <quark@fb.com>
parents:
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diff
changeset
|
426 o = _optimize(x[1]) |
34011
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Jun Wu <quark@fb.com>
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diff
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|
427 return o[0], (op, o[1]) |
30803
d389f19f14aa
revset: do not transform range* operators in parsed tree
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parents:
30802
diff
changeset
|
428 elif op == 'rangeall': |
34272
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|
429 return 1, x |
30803
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diff
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|
430 elif op in ('rangepre', 'rangepost', 'parentpost'): |
34272
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diff
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|
431 o = _optimize(x[1]) |
34011
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parents:
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|
432 return o[0], (op, o[1]) |
33415
371f59c6a89e
revset: do not compute weight for integer literal argument
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parents:
33336
diff
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|
433 elif op in ('dagrange', 'range'): |
34272
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diff
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|
434 wa, ta = _optimize(x[1]) |
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|
435 wb, tb = _optimize(x[2]) |
34011
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Jun Wu <quark@fb.com>
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diff
changeset
|
436 return wa + wb, (op, ta, tb) |
33416
9467d5337292
revset: add experimental relation and subscript operators
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parents:
33415
diff
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|
437 elif op in ('parent', 'ancestor', 'relation', 'subscript'): |
34272
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parents:
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diff
changeset
|
438 w, t = _optimize(x[1]) |
34011
1b28525e6698
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parents:
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diff
changeset
|
439 return w, (op, t, x[2]) |
33416
9467d5337292
revset: add experimental relation and subscript operators
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parents:
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diff
changeset
|
440 elif op == 'relsubscript': |
34272
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diff
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|
441 w, t = _optimize(x[1]) |
34011
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diff
changeset
|
442 return w, (op, t, x[2], x[3]) |
27987
b19d8d5d6b51
revset: flatten chained 'list' operations (aka function args) (issue5072)
Yuya Nishihara <yuya@tcha.org>
parents:
27945
diff
changeset
|
443 elif op == 'list': |
34272
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parents:
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diff
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|
444 ws, ts = zip(*(_optimize(y) for y in x[1:])) |
27987
b19d8d5d6b51
revset: flatten chained 'list' operations (aka function args) (issue5072)
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parents:
27945
diff
changeset
|
445 return sum(ws), (op,) + ts |
29766
5004ef47f437
revset: fix keyword arguments to go through optimization process
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parents:
29646
diff
changeset
|
446 elif op == 'keyvalue': |
34272
53fb09c73ba8
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Jun Wu <quark@fb.com>
parents:
34131
diff
changeset
|
447 w, t = _optimize(x[2]) |
29766
5004ef47f437
revset: fix keyword arguments to go through optimization process
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parents:
29646
diff
changeset
|
448 return w, (op, x[1], t) |
11275 | 449 elif op == 'func': |
29441
9e8d258708bb
revset: check invalid function syntax "func-name"() explicitly
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parents:
29425
diff
changeset
|
450 f = getsymbol(x[1]) |
34272
53fb09c73ba8
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parents:
34131
diff
changeset
|
451 wa, ta = _optimize(x[2]) |
34273
b0790bebfcf8
revset: move weight information to predicate
Jun Wu <quark@fb.com>
parents:
34272
diff
changeset
|
452 w = getattr(symbols.get(f), '_weight', 1) |
34011
1b28525e6698
revset: remove order information from tree (API)
Jun Wu <quark@fb.com>
parents:
34010
diff
changeset
|
453 return w + wa, (op, x[1], ta) |
29896
104914b03b83
revset: make optimize() reject unknown operators
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parents:
29814
diff
changeset
|
454 raise ValueError('invalid operator %r' % op) |
11275 | 455 |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
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parents:
29118
diff
changeset
|
456 def optimize(tree): |
29905
371c2a39eead
revset: make analyze() a separate step from optimize()
Yuya Nishihara <yuya@tcha.org>
parents:
29904
diff
changeset
|
457 """Optimize evaluatable tree |
371c2a39eead
revset: make analyze() a separate step from optimize()
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parents:
29904
diff
changeset
|
458 |
371c2a39eead
revset: make analyze() a separate step from optimize()
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diff
changeset
|
459 All pseudo operations should be transformed beforehand. |
371c2a39eead
revset: make analyze() a separate step from optimize()
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diff
changeset
|
460 """ |
34272
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parents:
34131
diff
changeset
|
461 _weight, newtree = _optimize(tree) |
29119
a032ebea4e97
revset: factor out public optimize() function from recursion
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parents:
29118
diff
changeset
|
462 return newtree |
a032ebea4e97
revset: factor out public optimize() function from recursion
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parents:
29118
diff
changeset
|
463 |
23845
0a7fd54d4e60
revset: introduce "_parsealiasdecl" to parse alias declarations strictly
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23844
diff
changeset
|
464 # the set of valid characters for the initial letter of symbols in |
0a7fd54d4e60
revset: introduce "_parsealiasdecl" to parse alias declarations strictly
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23844
diff
changeset
|
465 # alias declarations and definitions |
34069
e18119b1ad5d
py3: fix mixed bytes/unicode in revsetlang._aliassyminitletters
Yuya Nishihara <yuya@tcha.org>
parents:
34065
diff
changeset
|
466 _aliassyminitletters = _syminitletters | {'$'} |
23845
0a7fd54d4e60
revset: introduce "_parsealiasdecl" to parse alias declarations strictly
FUJIWARA Katsunori <foozy@lares.dti.ne.jp>
parents:
23844
diff
changeset
|
467 |
29073
81bac118f9e2
revset: factor out common parsing function
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parents:
29072
diff
changeset
|
468 def _parsewith(spec, lookup=None, syminitletters=None): |
81bac118f9e2
revset: factor out common parsing function
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diff
changeset
|
469 """Generate a parse tree of given spec with given tokenizing options |
81bac118f9e2
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diff
changeset
|
470 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
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34069
diff
changeset
|
471 >>> _parsewith(b'foo($1)', syminitletters=_aliassyminitletters) |
29073
81bac118f9e2
revset: factor out common parsing function
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29072
diff
changeset
|
472 ('func', ('symbol', 'foo'), ('symbol', '$1')) |
34131
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doctest: bulk-replace string literals with b'' for Python 3
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diff
changeset
|
473 >>> _parsewith(b'$1') |
29073
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diff
changeset
|
474 Traceback (most recent call last): |
81bac118f9e2
revset: factor out common parsing function
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diff
changeset
|
475 ... |
81bac118f9e2
revset: factor out common parsing function
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diff
changeset
|
476 ParseError: ("syntax error in revset '$1'", 0) |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
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diff
changeset
|
477 >>> _parsewith(b'foo bar') |
29073
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revset: factor out common parsing function
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diff
changeset
|
478 Traceback (most recent call last): |
81bac118f9e2
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diff
changeset
|
479 ... |
81bac118f9e2
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diff
changeset
|
480 ParseError: ('invalid token', 4) |
81bac118f9e2
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diff
changeset
|
481 """ |
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diff
changeset
|
482 p = parser.parser(elements) |
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diff
changeset
|
483 tree, pos = p.parse(tokenize(spec, lookup=lookup, |
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diff
changeset
|
484 syminitletters=syminitletters)) |
81bac118f9e2
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diff
changeset
|
485 if pos != len(spec): |
81bac118f9e2
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diff
changeset
|
486 raise error.ParseError(_('invalid token'), pos) |
29769
abe4eecc3253
revset: resolve ambiguity of x^:y before alias expansion
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parents:
29767
diff
changeset
|
487 return _fixops(parser.simplifyinfixops(tree, ('list', 'or'))) |
29073
81bac118f9e2
revset: factor out common parsing function
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parents:
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diff
changeset
|
488 |
28870
475dad3432fd
parser: add stub class that will host alias parsing and expansion
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diff
changeset
|
489 class _aliasrules(parser.basealiasrules): |
475dad3432fd
parser: add stub class that will host alias parsing and expansion
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diff
changeset
|
490 """Parsing and expansion rule set of revset aliases""" |
475dad3432fd
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diff
changeset
|
491 _section = _('revset alias') |
29074
e7c679738503
revset: define _parsealias() in _aliasrules class
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parents:
29073
diff
changeset
|
492 |
e7c679738503
revset: define _parsealias() in _aliasrules class
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parents:
29073
diff
changeset
|
493 @staticmethod |
e7c679738503
revset: define _parsealias() in _aliasrules class
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diff
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|
494 def _parse(spec): |
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495 """Parse alias declaration/definition ``spec`` |
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496 |
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497 This allows symbol names to use also ``$`` as an initial letter |
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498 (for backward compatibility), and callers of this function should |
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499 examine whether ``$`` is used also for unexpected symbols or not. |
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500 """ |
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501 return _parsewith(spec, syminitletters=_aliassyminitletters) |
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502 |
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503 @staticmethod |
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504 def _trygetfunc(tree): |
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505 if tree[0] == 'func' and tree[1][0] == 'symbol': |
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506 return tree[1][1], getlist(tree[2]) |
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507 |
33336
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508 def expandaliases(tree, aliases, warn=None): |
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509 """Expand aliases in a tree, aliases is a list of (name, value) tuples""" |
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510 aliases = _aliasrules.buildmap(aliases) |
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511 tree = _aliasrules.expand(aliases, tree) |
29922
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512 # warn about problematic (but not referred) aliases |
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513 if warn is not None: |
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514 for name, alias in sorted(aliases.iteritems()): |
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515 if alias.error and not alias.warned: |
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516 warn(_('warning: %s\n') % (alias.error)) |
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517 alias.warned = True |
23725
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revset: delay showing parse error for the revset alias until it is referred
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518 return tree |
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|
519 |
23742
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520 def foldconcat(tree): |
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521 """Fold elements to be concatenated by `##` |
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522 """ |
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523 if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'): |
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|
524 return tree |
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|
525 if tree[0] == '_concat': |
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|
526 pending = [tree] |
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diff
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|
527 l = [] |
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|
528 while pending: |
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|
529 e = pending.pop() |
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diff
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|
530 if e[0] == '_concat': |
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diff
changeset
|
531 pending.extend(reversed(e[1:])) |
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|
532 elif e[0] in ('string', 'symbol'): |
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|
533 l.append(e[1]) |
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|
534 else: |
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|
535 msg = _("\"##\" can't concatenate \"%s\" element") % (e[0]) |
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|
536 raise error.ParseError(msg) |
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|
537 return ('string', ''.join(l)) |
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|
538 else: |
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|
539 return tuple(foldconcat(t) for t in tree) |
14098
9f5a0acb0056
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diff
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|
540 |
20779
ffc2295c6b80
revset: pass a lookup function to the tokenizer
Matt Mackall <mpm@selenic.com>
parents:
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diff
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|
541 def parse(spec, lookup=None): |
29073
81bac118f9e2
revset: factor out common parsing function
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
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|
542 return _parsewith(spec, lookup=lookup) |
20779
ffc2295c6b80
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Matt Mackall <mpm@selenic.com>
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diff
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|
543 |
31604
7eac6fcf2ffa
revsetlang: move quoting function to not be a closure
Augie Fackler <augie@google.com>
parents:
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diff
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|
544 def _quote(s): |
31605
0b94c19b641c
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Augie Fackler <augie@google.com>
parents:
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diff
changeset
|
545 r"""Quote a value in order to make it safe for the revset engine. |
0b94c19b641c
revsetlang: add docstring with some tests to _quote
Augie Fackler <augie@google.com>
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diff
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|
546 |
34131
0fa781320203
doctest: bulk-replace string literals with b'' for Python 3
Yuya Nishihara <yuya@tcha.org>
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diff
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|
547 >>> _quote(b'asdf') |
31605
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Augie Fackler <augie@google.com>
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diff
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|
548 "'asdf'" |
34131
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Yuya Nishihara <yuya@tcha.org>
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|
549 >>> _quote(b"asdf'\"") |
31605
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Augie Fackler <augie@google.com>
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diff
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|
550 '\'asdf\\\'"\'' |
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Yuya Nishihara <yuya@tcha.org>
parents:
34069
diff
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|
551 >>> _quote(b'asdf\'') |
31606
0b3eb280564b
revsetlang: perform quoting using ui.escapestr instead of repr()
Augie Fackler <augie@google.com>
parents:
31605
diff
changeset
|
552 "'asdf\\''" |
31605
0b94c19b641c
revsetlang: add docstring with some tests to _quote
Augie Fackler <augie@google.com>
parents:
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diff
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|
553 >>> _quote(1) |
0b94c19b641c
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Augie Fackler <augie@google.com>
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diff
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|
554 "'1'" |
0b94c19b641c
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Augie Fackler <augie@google.com>
parents:
31604
diff
changeset
|
555 """ |
31636
f3b151278655
revsetlang: fix _quote on int on python3
Augie Fackler <raf@durin42.com>
parents:
31606
diff
changeset
|
556 return "'%s'" % util.escapestr(pycompat.bytestr(s)) |
31604
7eac6fcf2ffa
revsetlang: move quoting function to not be a closure
Augie Fackler <augie@google.com>
parents:
31603
diff
changeset
|
557 |
35596
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
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|
558 def _formatargtype(c, arg): |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
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|
559 if c == 'd': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
changeset
|
560 return '%d' % int(arg) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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diff
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|
561 elif c == 's': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
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|
562 return _quote(arg) |
a57acea31b3b
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diff
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|
563 elif c == 'r': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
564 parse(arg) # make sure syntax errors are confined |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
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|
565 return '(%s)' % arg |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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35595
diff
changeset
|
566 elif c == 'n': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
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|
567 return _quote(node.hex(arg)) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
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|
568 elif c == 'b': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
569 try: |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
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|
570 return _quote(arg.branch()) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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diff
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|
571 except AttributeError: |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
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|
572 raise TypeError |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
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diff
changeset
|
573 raise error.ParseError(_('unexpected revspec format character %s') % c) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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parents:
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diff
changeset
|
574 |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
575 def _formatlistexp(s, t): |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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diff
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|
576 l = len(s) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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changeset
|
577 if l == 0: |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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diff
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|
578 return "_list('')" |
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revsetlang: unnest inner functions from formatspec()
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diff
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|
579 elif l == 1: |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
580 return _formatargtype(t, s[0]) |
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Yuya Nishihara <yuya@tcha.org>
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diff
changeset
|
581 elif t == 'd': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
582 return "_intlist('%s')" % "\0".join('%d' % int(a) for a in s) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
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parents:
35595
diff
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|
583 elif t == 's': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
584 return "_list(%s)" % _quote("\0".join(s)) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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|
585 elif t == 'n': |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
586 return "_hexlist('%s')" % "\0".join(node.hex(a) for a in s) |
a57acea31b3b
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parents:
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diff
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|
587 elif t == 'b': |
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revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
588 try: |
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Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
589 return "_list('%s')" % "\0".join(a.branch() for a in s) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
590 except AttributeError: |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
591 raise TypeError |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
592 |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
593 m = l // 2 |
a57acea31b3b
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Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
594 return '(%s or %s)' % (_formatlistexp(s[:m], t), _formatlistexp(s[m:], t)) |
a57acea31b3b
revsetlang: unnest inner functions from formatspec()
Yuya Nishihara <yuya@tcha.org>
parents:
35595
diff
changeset
|
595 |
35597
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
35596
diff
changeset
|
596 def _formatparamexp(args, t): |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
597 return ', '.join(_formatargtype(t, a) for a in args) |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
35596
diff
changeset
|
598 |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
599 _formatlistfuncs = { |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
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parents:
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diff
changeset
|
600 'l': _formatlistexp, |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
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diff
changeset
|
601 'p': _formatparamexp, |
ed0902e8053e
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parents:
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diff
changeset
|
602 } |
ed0902e8053e
revsetlang: add %p specifier to format list of function arguments
Yuya Nishihara <yuya@tcha.org>
parents:
35596
diff
changeset
|
603 |
14901
a773119f30ba
revset: add formatspec convenience query builder
Matt Mackall <mpm@selenic.com>
parents:
14900
diff
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604 def formatspec(expr, *args): |
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605 ''' |
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606 This is a convenience function for using revsets internally, and |
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607 escapes arguments appropriately. Aliases are intentionally ignored |
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608 so that intended expression behavior isn't accidentally subverted. |
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609 |
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610 Supported arguments: |
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611 |
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612 %r = revset expression, parenthesized |
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613 %d = int(arg), no quoting |
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614 %s = string(arg), escaped and single-quoted |
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615 %b = arg.branch(), escaped and single-quoted |
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616 %n = hex(arg), single-quoted |
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617 %% = a literal '%' |
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618 |
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619 Prefixing the type with 'l' specifies a parenthesized list of that type, |
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620 and 'p' specifies a list of function parameters of that type. |
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621 |
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622 >>> formatspec(b'%r:: and %lr', b'10 or 11', (b"this()", b"that()")) |
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623 '(10 or 11):: and ((this()) or (that()))' |
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624 >>> formatspec(b'%d:: and not %d::', 10, 20) |
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625 '10:: and not 20::' |
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626 >>> formatspec(b'%ld or %ld', [], [1]) |
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627 "_list('') or 1" |
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628 >>> formatspec(b'keyword(%s)', b'foo\\xe9') |
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629 "keyword('foo\\\\xe9')" |
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630 >>> b = lambda: b'default' |
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631 >>> b.branch = b |
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632 >>> formatspec(b'branch(%b)', b) |
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633 "branch('default')" |
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634 >>> formatspec(b'root(%ls)', [b'a', b'b', b'c', b'd']) |
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635 "root(_list('a\\\\x00b\\\\x00c\\\\x00d'))" |
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636 >>> formatspec(b'sort(%r, %ps)', b':', [b'desc', b'user']) |
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637 "sort((:), 'desc', 'user')" |
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638 >>> formatspec(b'%ls', [b'a', b"'"]) |
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639 "_list('a\\\\x00\\\\'')" |
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640 ''' |
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641 expr = pycompat.bytestr(expr) |
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642 argiter = iter(args) |
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643 ret = [] |
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644 pos = 0 |
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645 while pos < len(expr): |
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646 q = expr.find('%', pos) |
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647 if q < 0: |
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648 ret.append(expr[pos:]) |
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649 break |
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650 ret.append(expr[pos:q]) |
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651 pos = q + 1 |
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652 try: |
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653 d = expr[pos] |
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654 except IndexError: |
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655 raise error.ParseError(_('incomplete revspec format character')) |
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656 if d == '%': |
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657 ret.append(d) |
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658 pos += 1 |
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659 continue |
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660 |
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661 try: |
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662 arg = next(argiter) |
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663 except StopIteration: |
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664 raise error.ParseError(_('missing argument for revspec')) |
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665 f = _formatlistfuncs.get(d) |
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666 if f: |
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667 # a list of some type |
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668 pos += 1 |
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669 try: |
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670 d = expr[pos] |
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671 except IndexError: |
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672 raise error.ParseError(_('incomplete revspec format character')) |
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673 try: |
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674 ret.append(f(list(arg), d)) |
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675 except (TypeError, ValueError): |
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676 raise error.ParseError(_('invalid argument for revspec')) |
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677 else: |
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678 try: |
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679 ret.append(_formatargtype(d, arg)) |
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680 except (TypeError, ValueError): |
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681 raise error.ParseError(_('invalid argument for revspec')) |
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682 pos += 1 |
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683 |
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684 try: |
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685 next(argiter) |
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686 raise error.ParseError(_('too many revspec arguments specified')) |
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687 except StopIteration: |
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688 pass |
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689 return ''.join(ret) |
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690 |
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691 def prettyformat(tree): |
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692 return parser.prettyformat(tree, ('string', 'symbol')) |
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693 |
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694 def depth(tree): |
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695 if isinstance(tree, tuple): |
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696 return max(map(depth, tree)) + 1 |
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697 else: |
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698 return 0 |
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699 |
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700 def funcsused(tree): |
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701 if not isinstance(tree, tuple) or tree[0] in ('string', 'symbol'): |
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702 return set() |
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703 else: |
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704 funcs = set() |
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705 for s in tree[1:]: |
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706 funcs |= funcsused(s) |
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707 if tree[0] == 'func': |
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708 funcs.add(tree[1][1]) |
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709 return funcs |
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710 |
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711 _hashre = util.re.compile('[0-9a-fA-F]{1,40}$') |
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712 |
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713 def _ishashlikesymbol(symbol): |
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714 """returns true if the symbol looks like a hash""" |
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715 return _hashre.match(symbol) |
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716 |
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717 def gethashlikesymbols(tree): |
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718 """returns the list of symbols of the tree that look like hashes |
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parents:
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719 |
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tests: make doctest py3-compatible again
Yuya Nishihara <yuya@tcha.org>
parents:
35822
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720 >>> gethashlikesymbols(parse(b'3::abe3ff')) |
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Pulkit Goyal <7895pulkit@gmail.com>
parents:
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721 ['3', 'abe3ff'] |
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tests: make doctest py3-compatible again
Yuya Nishihara <yuya@tcha.org>
parents:
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722 >>> gethashlikesymbols(parse(b'precursors(.)')) |
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Pulkit Goyal <7895pulkit@gmail.com>
parents:
34273
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723 [] |
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Yuya Nishihara <yuya@tcha.org>
parents:
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724 >>> gethashlikesymbols(parse(b'precursors(34)')) |
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Pulkit Goyal <7895pulkit@gmail.com>
parents:
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725 ['34'] |
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Yuya Nishihara <yuya@tcha.org>
parents:
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726 >>> gethashlikesymbols(parse(b'abe3ffZ')) |
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parents:
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727 [] |
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parents:
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728 """ |
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revsetlang: add utility function to return hash like symbols from the tree
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parents:
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729 if not tree: |
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parents:
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730 return [] |
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revsetlang: add utility function to return hash like symbols from the tree
Pulkit Goyal <7895pulkit@gmail.com>
parents:
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731 |
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parents:
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732 if tree[0] == "symbol": |
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parents:
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733 if _ishashlikesymbol(tree[1]): |
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parents:
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734 return [tree[1]] |
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parents:
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735 elif len(tree) >= 3: |
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parents:
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736 results = [] |
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revsetlang: add utility function to return hash like symbols from the tree
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parents:
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737 for subtree in tree[1:]: |
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parents:
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738 results += gethashlikesymbols(subtree) |
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Pulkit Goyal <7895pulkit@gmail.com>
parents:
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739 return results |
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Pulkit Goyal <7895pulkit@gmail.com>
parents:
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740 return [] |