templater: add parsing and expansion rules to process "templatealias" section
The debugtemplate command is updated to show expanded tree, but still the
template engine doesn't support alias expansion. That's why the test says
"parse error" for now.
# fileset.py - file set queries for mercurial
#
# Copyright 2010 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
import re
from .i18n import _
from . import (
error,
merge,
parser,
registrar,
util,
)
elements = {
# token-type: binding-strength, primary, prefix, infix, suffix
"(": (20, None, ("group", 1, ")"), ("func", 1, ")"), None),
"-": (5, None, ("negate", 19), ("minus", 5), None),
"not": (10, None, ("not", 10), None, None),
"!": (10, None, ("not", 10), None, None),
"and": (5, None, None, ("and", 5), None),
"&": (5, None, None, ("and", 5), None),
"or": (4, None, None, ("or", 4), None),
"|": (4, None, None, ("or", 4), None),
"+": (4, None, None, ("or", 4), None),
",": (2, None, None, ("list", 2), None),
")": (0, None, None, None, None),
"symbol": (0, "symbol", None, None, None),
"string": (0, "string", None, None, None),
"end": (0, None, None, None, None),
}
keywords = set(['and', 'or', 'not'])
globchars = ".*{}[]?/\\_"
def tokenize(program):
pos, l = 0, len(program)
while pos < l:
c = program[pos]
if c.isspace(): # skip inter-token whitespace
pass
elif c in "(),-|&+!": # handle simple operators
yield (c, None, pos)
elif (c in '"\'' or c == 'r' and
program[pos:pos + 2] in ("r'", 'r"')): # handle quoted strings
if c == 'r':
pos += 1
c = program[pos]
decode = lambda x: x
else:
decode = parser.unescapestr
pos += 1
s = pos
while pos < l: # find closing quote
d = program[pos]
if d == '\\': # skip over escaped characters
pos += 2
continue
if d == c:
yield ('string', decode(program[s:pos]), s)
break
pos += 1
else:
raise error.ParseError(_("unterminated string"), s)
elif c.isalnum() or c in globchars or ord(c) > 127:
# gather up a symbol/keyword
s = pos
pos += 1
while pos < l: # find end of symbol
d = program[pos]
if not (d.isalnum() or d in globchars or ord(d) > 127):
break
pos += 1
sym = program[s:pos]
if sym in keywords: # operator keywords
yield (sym, None, s)
else:
yield ('symbol', sym, s)
pos -= 1
else:
raise error.ParseError(_("syntax error"), pos)
pos += 1
yield ('end', None, pos)
def parse(expr):
p = parser.parser(elements)
tree, pos = p.parse(tokenize(expr))
if pos != len(expr):
raise error.ParseError(_("invalid token"), pos)
return tree
def getstring(x, err):
if x and (x[0] == 'string' or x[0] == 'symbol'):
return x[1]
raise error.ParseError(err)
def getset(mctx, x):
if not x:
raise error.ParseError(_("missing argument"))
return methods[x[0]](mctx, *x[1:])
def stringset(mctx, x):
m = mctx.matcher([x])
return [f for f in mctx.subset if m(f)]
def andset(mctx, x, y):
return getset(mctx.narrow(getset(mctx, x)), y)
def orset(mctx, x, y):
# needs optimizing
xl = getset(mctx, x)
yl = getset(mctx, y)
return xl + [f for f in yl if f not in xl]
def notset(mctx, x):
s = set(getset(mctx, x))
return [r for r in mctx.subset if r not in s]
def minusset(mctx, x, y):
xl = getset(mctx, x)
yl = set(getset(mctx, y))
return [f for f in xl if f not in yl]
def listset(mctx, a, b):
raise error.ParseError(_("can't use a list in this context"),
hint=_('see hg help "filesets.x or y"'))
# symbols are callable like:
# fun(mctx, x)
# with:
# mctx - current matchctx instance
# x - argument in tree form
symbols = {}
# filesets using matchctx.status()
_statuscallers = set()
# filesets using matchctx.existing()
_existingcallers = set()
predicate = registrar.filesetpredicate()
@predicate('modified()', callstatus=True)
def modified(mctx, x):
"""File that is modified according to :hg:`status`.
"""
# i18n: "modified" is a keyword
getargs(x, 0, 0, _("modified takes no arguments"))
s = mctx.status().modified
return [f for f in mctx.subset if f in s]
@predicate('added()', callstatus=True)
def added(mctx, x):
"""File that is added according to :hg:`status`.
"""
# i18n: "added" is a keyword
getargs(x, 0, 0, _("added takes no arguments"))
s = mctx.status().added
return [f for f in mctx.subset if f in s]
@predicate('removed()', callstatus=True)
def removed(mctx, x):
"""File that is removed according to :hg:`status`.
"""
# i18n: "removed" is a keyword
getargs(x, 0, 0, _("removed takes no arguments"))
s = mctx.status().removed
return [f for f in mctx.subset if f in s]
@predicate('deleted()', callstatus=True)
def deleted(mctx, x):
"""Alias for ``missing()``.
"""
# i18n: "deleted" is a keyword
getargs(x, 0, 0, _("deleted takes no arguments"))
s = mctx.status().deleted
return [f for f in mctx.subset if f in s]
@predicate('missing()', callstatus=True)
def missing(mctx, x):
"""File that is missing according to :hg:`status`.
"""
# i18n: "missing" is a keyword
getargs(x, 0, 0, _("missing takes no arguments"))
s = mctx.status().deleted
return [f for f in mctx.subset if f in s]
@predicate('unknown()', callstatus=True)
def unknown(mctx, x):
"""File that is unknown according to :hg:`status`. These files will only be
considered if this predicate is used.
"""
# i18n: "unknown" is a keyword
getargs(x, 0, 0, _("unknown takes no arguments"))
s = mctx.status().unknown
return [f for f in mctx.subset if f in s]
@predicate('ignored()', callstatus=True)
def ignored(mctx, x):
"""File that is ignored according to :hg:`status`. These files will only be
considered if this predicate is used.
"""
# i18n: "ignored" is a keyword
getargs(x, 0, 0, _("ignored takes no arguments"))
s = mctx.status().ignored
return [f for f in mctx.subset if f in s]
@predicate('clean()', callstatus=True)
def clean(mctx, x):
"""File that is clean according to :hg:`status`.
"""
# i18n: "clean" is a keyword
getargs(x, 0, 0, _("clean takes no arguments"))
s = mctx.status().clean
return [f for f in mctx.subset if f in s]
def func(mctx, a, b):
if a[0] == 'symbol' and a[1] in symbols:
funcname = a[1]
enabled = mctx._existingenabled
mctx._existingenabled = funcname in _existingcallers
try:
return symbols[funcname](mctx, b)
finally:
mctx._existingenabled = enabled
keep = lambda fn: getattr(fn, '__doc__', None) is not None
syms = [s for (s, fn) in symbols.items() if keep(fn)]
raise error.UnknownIdentifier(a[1], syms)
def getlist(x):
if not x:
return []
if x[0] == 'list':
return getlist(x[1]) + [x[2]]
return [x]
def getargs(x, min, max, err):
l = getlist(x)
if len(l) < min or len(l) > max:
raise error.ParseError(err)
return l
@predicate('binary()', callexisting=True)
def binary(mctx, x):
"""File that appears to be binary (contains NUL bytes).
"""
# i18n: "binary" is a keyword
getargs(x, 0, 0, _("binary takes no arguments"))
return [f for f in mctx.existing() if util.binary(mctx.ctx[f].data())]
@predicate('exec()', callexisting=True)
def exec_(mctx, x):
"""File that is marked as executable.
"""
# i18n: "exec" is a keyword
getargs(x, 0, 0, _("exec takes no arguments"))
return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'x']
@predicate('symlink()', callexisting=True)
def symlink(mctx, x):
"""File that is marked as a symlink.
"""
# i18n: "symlink" is a keyword
getargs(x, 0, 0, _("symlink takes no arguments"))
return [f for f in mctx.existing() if mctx.ctx.flags(f) == 'l']
@predicate('resolved()')
def resolved(mctx, x):
"""File that is marked resolved according to :hg:`resolve -l`.
"""
# i18n: "resolved" is a keyword
getargs(x, 0, 0, _("resolved takes no arguments"))
if mctx.ctx.rev() is not None:
return []
ms = merge.mergestate.read(mctx.ctx.repo())
return [f for f in mctx.subset if f in ms and ms[f] == 'r']
@predicate('unresolved()')
def unresolved(mctx, x):
"""File that is marked unresolved according to :hg:`resolve -l`.
"""
# i18n: "unresolved" is a keyword
getargs(x, 0, 0, _("unresolved takes no arguments"))
if mctx.ctx.rev() is not None:
return []
ms = merge.mergestate.read(mctx.ctx.repo())
return [f for f in mctx.subset if f in ms and ms[f] == 'u']
@predicate('hgignore()')
def hgignore(mctx, x):
"""File that matches the active .hgignore pattern.
"""
# i18n: "hgignore" is a keyword
getargs(x, 0, 0, _("hgignore takes no arguments"))
ignore = mctx.ctx.repo().dirstate._ignore
return [f for f in mctx.subset if ignore(f)]
@predicate('portable()')
def portable(mctx, x):
"""File that has a portable name. (This doesn't include filenames with case
collisions.)
"""
# i18n: "portable" is a keyword
getargs(x, 0, 0, _("portable takes no arguments"))
checkwinfilename = util.checkwinfilename
return [f for f in mctx.subset if checkwinfilename(f) is None]
@predicate('grep(regex)', callexisting=True)
def grep(mctx, x):
"""File contains the given regular expression.
"""
try:
# i18n: "grep" is a keyword
r = re.compile(getstring(x, _("grep requires a pattern")))
except re.error as e:
raise error.ParseError(_('invalid match pattern: %s') % e)
return [f for f in mctx.existing() if r.search(mctx.ctx[f].data())]
def _sizetomax(s):
try:
s = s.strip().lower()
for k, v in util._sizeunits:
if s.endswith(k):
# max(4k) = 5k - 1, max(4.5k) = 4.6k - 1
n = s[:-len(k)]
inc = 1.0
if "." in n:
inc /= 10 ** len(n.split(".")[1])
return int((float(n) + inc) * v) - 1
# no extension, this is a precise value
return int(s)
except ValueError:
raise error.ParseError(_("couldn't parse size: %s") % s)
@predicate('size(expression)', callexisting=True)
def size(mctx, x):
"""File size matches the given expression. Examples:
- 1k (files from 1024 to 2047 bytes)
- < 20k (files less than 20480 bytes)
- >= .5MB (files at least 524288 bytes)
- 4k - 1MB (files from 4096 bytes to 1048576 bytes)
"""
# i18n: "size" is a keyword
expr = getstring(x, _("size requires an expression")).strip()
if '-' in expr: # do we have a range?
a, b = expr.split('-', 1)
a = util.sizetoint(a)
b = util.sizetoint(b)
m = lambda x: x >= a and x <= b
elif expr.startswith("<="):
a = util.sizetoint(expr[2:])
m = lambda x: x <= a
elif expr.startswith("<"):
a = util.sizetoint(expr[1:])
m = lambda x: x < a
elif expr.startswith(">="):
a = util.sizetoint(expr[2:])
m = lambda x: x >= a
elif expr.startswith(">"):
a = util.sizetoint(expr[1:])
m = lambda x: x > a
elif expr[0].isdigit or expr[0] == '.':
a = util.sizetoint(expr)
b = _sizetomax(expr)
m = lambda x: x >= a and x <= b
else:
raise error.ParseError(_("couldn't parse size: %s") % expr)
return [f for f in mctx.existing() if m(mctx.ctx[f].size())]
@predicate('encoding(name)', callexisting=True)
def encoding(mctx, x):
"""File can be successfully decoded with the given character
encoding. May not be useful for encodings other than ASCII and
UTF-8.
"""
# i18n: "encoding" is a keyword
enc = getstring(x, _("encoding requires an encoding name"))
s = []
for f in mctx.existing():
d = mctx.ctx[f].data()
try:
d.decode(enc)
except LookupError:
raise error.Abort(_("unknown encoding '%s'") % enc)
except UnicodeDecodeError:
continue
s.append(f)
return s
@predicate('eol(style)', callexisting=True)
def eol(mctx, x):
"""File contains newlines of the given style (dos, unix, mac). Binary
files are excluded, files with mixed line endings match multiple
styles.
"""
# i18n: "eol" is a keyword
enc = getstring(x, _("eol requires a style name"))
s = []
for f in mctx.existing():
d = mctx.ctx[f].data()
if util.binary(d):
continue
if (enc == 'dos' or enc == 'win') and '\r\n' in d:
s.append(f)
elif enc == 'unix' and re.search('(?<!\r)\n', d):
s.append(f)
elif enc == 'mac' and re.search('\r(?!\n)', d):
s.append(f)
return s
@predicate('copied()')
def copied(mctx, x):
"""File that is recorded as being copied.
"""
# i18n: "copied" is a keyword
getargs(x, 0, 0, _("copied takes no arguments"))
s = []
for f in mctx.subset:
p = mctx.ctx[f].parents()
if p and p[0].path() != f:
s.append(f)
return s
@predicate('subrepo([pattern])')
def subrepo(mctx, x):
"""Subrepositories whose paths match the given pattern.
"""
# i18n: "subrepo" is a keyword
getargs(x, 0, 1, _("subrepo takes at most one argument"))
ctx = mctx.ctx
sstate = sorted(ctx.substate)
if x:
# i18n: "subrepo" is a keyword
pat = getstring(x, _("subrepo requires a pattern or no arguments"))
from . import match as matchmod # avoid circular import issues
fast = not matchmod.patkind(pat)
if fast:
def m(s):
return (s == pat)
else:
m = matchmod.match(ctx.repo().root, '', [pat], ctx=ctx)
return [sub for sub in sstate if m(sub)]
else:
return [sub for sub in sstate]
methods = {
'string': stringset,
'symbol': stringset,
'and': andset,
'or': orset,
'minus': minusset,
'list': listset,
'group': getset,
'not': notset,
'func': func,
}
class matchctx(object):
def __init__(self, ctx, subset=None, status=None):
self.ctx = ctx
self.subset = subset
self._status = status
self._existingenabled = False
def status(self):
return self._status
def matcher(self, patterns):
return self.ctx.match(patterns)
def filter(self, files):
return [f for f in files if f in self.subset]
def existing(self):
assert self._existingenabled, 'unexpected existing() invocation'
if self._status is not None:
removed = set(self._status[3])
unknown = set(self._status[4] + self._status[5])
else:
removed = set()
unknown = set()
return (f for f in self.subset
if (f in self.ctx and f not in removed) or f in unknown)
def narrow(self, files):
return matchctx(self.ctx, self.filter(files), self._status)
def _intree(funcs, tree):
if isinstance(tree, tuple):
if tree[0] == 'func' and tree[1][0] == 'symbol':
if tree[1][1] in funcs:
return True
for s in tree[1:]:
if _intree(funcs, s):
return True
return False
def getfileset(ctx, expr):
tree = parse(expr)
# do we need status info?
if (_intree(_statuscallers, tree) or
# Using matchctx.existing() on a workingctx requires us to check
# for deleted files.
(ctx.rev() is None and _intree(_existingcallers, tree))):
unknown = _intree(['unknown'], tree)
ignored = _intree(['ignored'], tree)
r = ctx.repo()
status = r.status(ctx.p1(), ctx,
unknown=unknown, ignored=ignored, clean=True)
subset = []
for c in status:
subset.extend(c)
else:
status = None
subset = list(ctx.walk(ctx.match([])))
return getset(matchctx(ctx, subset, status), tree)
def prettyformat(tree):
return parser.prettyformat(tree, ('string', 'symbol'))
def loadpredicate(ui, extname, registrarobj):
"""Load fileset predicates from specified registrarobj
"""
for name, func in registrarobj._table.iteritems():
symbols[name] = func
if func._callstatus:
_statuscallers.add(name)
if func._callexisting:
_existingcallers.add(name)
# load built-in predicates explicitly to setup _statuscallers/_existingcallers
loadpredicate(None, None, predicate)
# tell hggettext to extract docstrings from these functions:
i18nfunctions = symbols.values()