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-rw-r--r--scripts/mtest2make.py3
-rwxr-xr-xscripts/ninjatool.py1008
2 files changed, 2 insertions, 1009 deletions
diff --git a/scripts/mtest2make.py b/scripts/mtest2make.py
index c3489a4605..25ee6887cf 100644
--- a/scripts/mtest2make.py
+++ b/scripts/mtest2make.py
@@ -70,8 +70,9 @@ def process_tests(test, targets, suites):
     print('.test.driver.%d := %s' % (i, driver))
     print('.test.env.%d := $(.test.env) %s' % (i, env))
     print('.test.cmd.%d := %s' % (i, cmd))
+    print('.test.deps.%d := %s' % (i, ' '.join(deps)))
     print('.PHONY: run-test-%d' % (i,))
-    print('run-test-%d: %s' % (i, ' '.join(deps)))
+    print('run-test-%d: $(.test.deps.%d)' % (i,i))
     print('\t@$(call .test.run,%d,$(.test.output-format))' % (i,))
 
     test_suites = test['suite'] or ['default']
diff --git a/scripts/ninjatool.py b/scripts/ninjatool.py
deleted file mode 100755
index 6f0e35c727..0000000000
--- a/scripts/ninjatool.py
+++ /dev/null
@@ -1,1008 +0,0 @@
-#! /bin/sh
-
-# Python module for parsing and processing .ninja files.
-#
-# Author: Paolo Bonzini
-#
-# Copyright (C) 2019 Red Hat, Inc.
-
-
-# We don't want to put "#! @PYTHON@" as the shebang and
-# make the file executable, so instead we make this a
-# Python/shell polyglot.  The first line below starts a
-# multiline string literal for Python, while it is just
-# ":" for bash.  The closing of the multiline string literal
-# is never parsed by bash since it exits before.
-
-'''':
-case "$0" in
-  /*) me=$0 ;;
-  *) me=$(command -v "$0") ;;
-esac
-python="@PYTHON@"
-case $python in
-  @*) python=python3 ;;
-esac
-exec $python "$me" "$@"
-exit 1
-'''
-
-
-from collections import namedtuple, defaultdict
-import sys
-import os
-import re
-import json
-import argparse
-import hashlib
-import shutil
-
-
-class InvalidArgumentError(Exception):
-    pass
-
-# faster version of os.path.normpath: do nothing unless there is a double
-# slash or a "." or ".." component.  The filter does not have to be super
-# precise, but it has to be fast.  os.path.normpath is the hottest function
-# for ninja2make without this optimization!
-if os.path.sep == '/':
-    def normpath(path, _slow_re=re.compile('/[./]')):
-        return os.path.normpath(path) if _slow_re.search(path) or path[0] == '.' else path
-else:
-    normpath = os.path.normpath
-
-
-def sha1_text(text):
-    return hashlib.sha1(text.encode()).hexdigest()
-
-# ---- lexer and parser ----
-
-PATH_RE = r"[^$\s:|]+|\$[$ :]|\$[a-zA-Z0-9_-]+|\$\{[a-zA-Z0-9_.-]+\}"
-
-SIMPLE_PATH_RE = re.compile(r"^[^$\s:|]+$")
-IDENT_RE = re.compile(r"[a-zA-Z0-9_.-]+$")
-STRING_RE = re.compile(r"(" + PATH_RE + r"|[\s:|])(?:\r?\n)?|.")
-TOPLEVEL_RE = re.compile(r"([=:#]|\|\|?|^ +|(?:" + PATH_RE + r")+)\s*|.")
-VAR_RE=re.compile(r'\$\$|\$\{([^}]*)\}')
-
-BUILD = 1
-POOL = 2
-RULE = 3
-DEFAULT = 4
-EQUALS = 5
-COLON = 6
-PIPE = 7
-PIPE2 = 8
-IDENT = 9
-INCLUDE = 10
-INDENT = 11
-EOL = 12
-
-
-class LexerError(Exception):
-    pass
-
-
-class ParseError(Exception):
-    pass
-
-
-class NinjaParserEvents(object):
-    def __init__(self, parser):
-        self.parser = parser
-
-    def dollar_token(self, word, in_path=False):
-        return '$$' if word == '$' else word
-
-    def variable_expansion_token(self, varname):
-        return '${%s}' % varname
-
-    def variable(self, name, arg):
-        pass
-
-    def begin_file(self):
-        pass
-
-    def end_file(self):
-        pass
-
-    def end_scope(self):
-        pass
-
-    def begin_pool(self, name):
-        pass
-
-    def begin_rule(self, name):
-        pass
-
-    def begin_build(self, out, iout, rule, in_, iin, orderdep):
-        pass
-
-    def default(self, targets):
-        pass
-
-
-class NinjaParser(object):
-
-    InputFile = namedtuple('InputFile', 'filename iter lineno')
-
-    def __init__(self, filename, input):
-        self.stack = []
-        self.top = None
-        self.iter = None
-        self.lineno = None
-        self.match_keyword = False
-        self.push(filename, input)
-
-    def file_changed(self):
-        self.iter = self.top.iter
-        self.lineno = self.top.lineno
-        if self.top.filename is not None:
-            os.chdir(os.path.dirname(self.top.filename) or '.')
-
-    def push(self, filename, input):
-        if self.top:
-            self.top.lineno = self.lineno
-            self.top.iter = self.iter
-            self.stack.append(self.top)
-        self.top = self.InputFile(filename=filename or 'stdin',
-                                  iter=self._tokens(input), lineno=0)
-        self.file_changed()
-
-    def pop(self):
-        if len(self.stack):
-            self.top = self.stack[-1]
-            self.stack.pop()
-            self.file_changed()
-        else:
-            self.top = self.iter = None
-
-    def next_line(self, input):
-        line = next(input).rstrip()
-        self.lineno += 1
-        while len(line) and line[-1] == '$':
-            line = line[0:-1] + next(input).strip()
-            self.lineno += 1
-        return line
-
-    def print_token(self, tok):
-        if tok == EOL:
-            return "end of line"
-        if tok == BUILD:
-            return '"build"'
-        if tok == POOL:
-            return '"pool"'
-        if tok == RULE:
-            return '"rule"'
-        if tok == DEFAULT:
-            return '"default"'
-        if tok == EQUALS:
-            return '"="'
-        if tok == COLON:
-            return '":"'
-        if tok == PIPE:
-            return '"|"'
-        if tok == PIPE2:
-            return '"||"'
-        if tok == INCLUDE:
-            return '"include"'
-        if tok == IDENT:
-            return 'identifier'
-        return '"%s"' % tok
-
-    def error(self, msg):
-        raise LexerError("%s:%d: %s" % (self.stack[-1].filename, self.lineno, msg))
-
-    def parse_error(self, msg):
-        raise ParseError("%s:%d: %s" % (self.stack[-1].filename, self.lineno, msg))
-
-    def expected(self, expected, tok):
-        msg = "found %s, expected " % (self.print_token(tok), )
-        for i, exp_tok in enumerate(expected):
-            if i > 0:
-                msg = msg + (' or ' if i == len(expected) - 1 else ', ')
-            msg = msg + self.print_token(exp_tok)
-        self.parse_error(msg)
-
-    def _variable_tokens(self, value):
-        for m in STRING_RE.finditer(value):
-            match = m.group(1)
-            if not match:
-                self.error("unexpected '%s'" % (m.group(0), ))
-            yield match
-
-    def _tokens(self, input):
-        while True:
-            try:
-                line = self.next_line(input)
-            except StopIteration:
-                return
-            for m in TOPLEVEL_RE.finditer(line):
-                match = m.group(1)
-                if not match:
-                    self.error("unexpected '%s'" % (m.group(0), ))
-                if match == ':':
-                    yield COLON
-                    continue
-                if match == '|':
-                    yield PIPE
-                    continue
-                if match == '||':
-                    yield PIPE2
-                    continue
-                if match[0] == ' ':
-                    yield INDENT
-                    continue
-                if match[0] == '=':
-                    yield EQUALS
-                    value = line[m.start() + 1:].lstrip()
-                    yield from self._variable_tokens(value)
-                    break
-                if match[0] == '#':
-                    break
-
-                # identifier
-                if self.match_keyword:
-                    if match == 'build':
-                        yield BUILD
-                        continue
-                    if match == 'pool':
-                        yield POOL
-                        continue
-                    if match == 'rule':
-                        yield RULE
-                        continue
-                    if match == 'default':
-                        yield DEFAULT
-                        continue
-                    if match == 'include':
-                        filename = line[m.start() + 8:].strip()
-                        self.push(filename, open(filename, 'r'))
-                        break
-                    if match == 'subninja':
-                        self.error('subninja is not supported')
-                yield match
-            yield EOL
-
-    def parse(self, events):
-        global_var = True
-
-        def look_for(*expected):
-            # The last token in the token stream is always EOL.  This
-            # is exploited to avoid catching StopIteration everywhere.
-            tok = next(self.iter)
-            if tok not in expected:
-                self.expected(expected, tok)
-            return tok
-
-        def look_for_ident(*expected):
-            tok = next(self.iter)
-            if isinstance(tok, str):
-                if not IDENT_RE.match(tok):
-                    self.parse_error('variable expansion not allowed')
-            elif tok not in expected:
-                self.expected(expected + (IDENT,), tok)
-            return tok
-
-        def parse_assignment_rhs(gen, expected, in_path):
-            tokens = []
-            for tok in gen:
-                if not isinstance(tok, str):
-                    if tok in expected:
-                        break
-                    self.expected(expected + (IDENT,), tok)
-                if tok[0] != '$':
-                    tokens.append(tok)
-                elif tok == '$ ' or tok == '$$' or tok == '$:':
-                    tokens.append(events.dollar_token(tok[1], in_path))
-                else:
-                    var = tok[2:-1] if tok[1] == '{' else tok[1:]
-                    tokens.append(events.variable_expansion_token(var))
-            else:
-                # gen must have raised StopIteration
-                tok = None
-
-            if tokens:
-                # Fast path avoiding str.join()
-                value = tokens[0] if len(tokens) == 1 else ''.join(tokens)
-            else:
-                value = None
-            return value, tok
-
-        def look_for_path(*expected):
-            # paths in build rules are parsed one space-separated token
-            # at a time and expanded
-            token = next(self.iter)
-            if not isinstance(token, str):
-                return None, token
-            # Fast path if there are no dollar and variable expansion
-            if SIMPLE_PATH_RE.match(token):
-                return token, None
-            gen = self._variable_tokens(token)
-            return parse_assignment_rhs(gen, expected, True)
-
-        def parse_assignment(tok):
-            name = tok
-            assert isinstance(name, str)
-            look_for(EQUALS)
-            value, tok = parse_assignment_rhs(self.iter, (EOL,), False)
-            assert tok == EOL
-            events.variable(name, value)
-
-        def parse_build():
-            # parse outputs
-            out = []
-            iout = []
-            while True:
-                value, tok = look_for_path(COLON, PIPE)
-                if value is None:
-                    break
-                out.append(value)
-            if tok == PIPE:
-                while True:
-                    value, tok = look_for_path(COLON)
-                    if value is None:
-                        break
-                    iout.append(value)
-
-            # parse rule
-            assert tok == COLON
-            rule = look_for_ident()
-
-            # parse inputs and dependencies
-            in_ = []
-            iin = []
-            orderdep = []
-            while True:
-                value, tok = look_for_path(PIPE, PIPE2, EOL)
-                if value is None:
-                    break
-                in_.append(value)
-            if tok == PIPE:
-                while True:
-                    value, tok = look_for_path(PIPE2, EOL)
-                    if value is None:
-                        break
-                    iin.append(value)
-            if tok == PIPE2:
-                while True:
-                    value, tok = look_for_path(EOL)
-                    if value is None:
-                        break
-                    orderdep.append(value)
-            assert tok == EOL
-            events.begin_build(out, iout, rule, in_, iin, orderdep)
-            nonlocal global_var
-            global_var = False
-
-        def parse_pool():
-            # pool declarations are ignored.  Just gobble all the variables
-            ident = look_for_ident()
-            look_for(EOL)
-            events.begin_pool(ident)
-            nonlocal global_var
-            global_var = False
-
-        def parse_rule():
-            ident = look_for_ident()
-            look_for(EOL)
-            events.begin_rule(ident)
-            nonlocal global_var
-            global_var = False
-
-        def parse_default():
-            idents = []
-            while True:
-                ident = look_for_ident(EOL)
-                if ident == EOL:
-                    break
-                idents.append(ident)
-            events.default(idents)
-
-        def parse_declaration(tok):
-            if tok == EOL:
-                return
-
-            nonlocal global_var
-            if tok == INDENT:
-                if global_var:
-                    self.parse_error('indented line outside rule or edge')
-                tok = look_for_ident(EOL)
-                if tok == EOL:
-                    return
-                parse_assignment(tok)
-                return
-
-            if not global_var:
-                events.end_scope()
-                global_var = True
-            if tok == POOL:
-                parse_pool()
-            elif tok == BUILD:
-                parse_build()
-            elif tok == RULE:
-                parse_rule()
-            elif tok == DEFAULT:
-                parse_default()
-            elif isinstance(tok, str):
-                parse_assignment(tok)
-            else:
-                self.expected((POOL, BUILD, RULE, INCLUDE, DEFAULT, IDENT), tok)
-
-        events.begin_file()
-        while self.iter:
-            try:
-                self.match_keyword = True
-                token = next(self.iter)
-                self.match_keyword = False
-                parse_declaration(token)
-            except StopIteration:
-                self.pop()
-        events.end_file()
-
-
-# ---- variable handling ----
-
-def expand(x, rule_vars=None, build_vars=None, global_vars=None):
-    if x is None:
-        return None
-    changed = True
-    have_dollar_replacement = False
-    while changed:
-        changed = False
-        matches = list(VAR_RE.finditer(x))
-        if not matches:
-            break
-
-        # Reverse the match so that expanding later matches does not
-        # invalidate m.start()/m.end() for earlier ones.  Do not reduce $$ to $
-        # until all variables are dealt with.
-        for m in reversed(matches):
-            name = m.group(1)
-            if not name:
-                have_dollar_replacement = True
-                continue
-            changed = True
-            if build_vars and name in build_vars:
-                value = build_vars[name]
-            elif rule_vars and name in rule_vars:
-                value = rule_vars[name]
-            elif name in global_vars:
-                value = global_vars[name]
-            else:
-                value = ''
-            x = x[:m.start()] + value + x[m.end():]
-    return x.replace('$$', '$') if have_dollar_replacement else x
-
-
-class Scope(object):
-    def __init__(self, events):
-        self.events = events
-
-    def on_left_scope(self):
-        pass
-
-    def on_variable(self, key, value):
-        pass
-
-
-class BuildScope(Scope):
-    def __init__(self, events, out, iout, rule, in_, iin, orderdep, rule_vars):
-        super().__init__(events)
-        self.rule = rule
-        self.out = [events.expand_and_normalize(x) for x in out]
-        self.in_ = [events.expand_and_normalize(x) for x in in_]
-        self.iin = [events.expand_and_normalize(x) for x in iin]
-        self.orderdep = [events.expand_and_normalize(x) for x in orderdep]
-        self.iout = [events.expand_and_normalize(x) for x in iout]
-        self.rule_vars = rule_vars
-        self.build_vars = dict()
-        self._define_variable('out', ' '.join(self.out))
-        self._define_variable('in', ' '.join(self.in_))
-
-    def expand(self, x):
-        return self.events.expand(x, self.rule_vars, self.build_vars)
-
-    def on_left_scope(self):
-        self.events.variable('out', self.build_vars['out'])
-        self.events.variable('in', self.build_vars['in'])
-        self.events.end_build(self, self.out, self.iout, self.rule, self.in_,
-                              self.iin, self.orderdep)
-
-    def _define_variable(self, key, value):
-        # The value has been expanded already, quote it for further
-        # expansion from rule variables
-        value = value.replace('$', '$$')
-        self.build_vars[key] = value
-
-    def on_variable(self, key, value):
-        # in and out are at the top of the lookup order and cannot
-        # be overridden.  Also, unlike what the manual says, build
-        # variables only lookup global variables.  They never lookup
-        # rule variables, earlier build variables, or in/out.
-        if key not in ('in', 'in_newline', 'out'):
-            self._define_variable(key, self.events.expand(value))
-
-
-class RuleScope(Scope):
-    def __init__(self, events, name, vars_dict):
-        super().__init__(events)
-        self.name = name
-        self.vars_dict = vars_dict
-        self.generator = False
-
-    def on_left_scope(self):
-        self.events.end_rule(self, self.name)
-
-    def on_variable(self, key, value):
-        self.vars_dict[key] = value
-        if key == 'generator':
-            self.generator = True
-
-
-class NinjaParserEventsWithVars(NinjaParserEvents):
-    def __init__(self, parser):
-        super().__init__(parser)
-        self.rule_vars = defaultdict(lambda: dict())
-        self.global_vars = dict()
-        self.scope = None
-
-    def variable(self, name, value):
-        if self.scope:
-            self.scope.on_variable(name, value)
-        else:
-            self.global_vars[name] = self.expand(value)
-
-    def begin_build(self, out, iout, rule, in_, iin, orderdep):
-        if rule != 'phony' and rule not in self.rule_vars:
-            self.parser.parse_error("undefined rule '%s'" % rule)
-
-        self.scope = BuildScope(self, out, iout, rule, in_, iin, orderdep, self.rule_vars[rule])
-
-    def begin_pool(self, name):
-        # pool declarations are ignored.  Just gobble all the variables
-        self.scope = Scope(self)
-
-    def begin_rule(self, name):
-        if name in self.rule_vars:
-            self.parser.parse_error("duplicate rule '%s'" % name)
-        self.scope = RuleScope(self, name, self.rule_vars[name])
-
-    def end_scope(self):
-        self.scope.on_left_scope()
-        self.scope = None
-
-    # utility functions:
-
-    def expand(self, x, rule_vars=None, build_vars=None):
-        return expand(x, rule_vars, build_vars, self.global_vars)
-
-    def expand_and_normalize(self, x):
-        return normpath(self.expand(x))
-
-    # extra events not present in the superclass:
-
-    def end_build(self, scope, out, iout, rule, in_, iin, orderdep):
-        pass
-
-    def end_rule(self, scope, name):
-        pass
-
-
-# ---- test client that just prints back whatever it parsed  ----
-
-class Writer(NinjaParserEvents):
-    ARGS = argparse.ArgumentParser(description='Rewrite input build.ninja to stdout.')
-
-    def __init__(self, output, parser, args):
-        super().__init__(parser)
-        self.output = output
-        self.indent = ''
-        self.had_vars = False
-
-    def dollar_token(self, word, in_path=False):
-        return '$' + word
-
-    def print(self, *args, **kwargs):
-        if len(args):
-            self.output.write(self.indent)
-        print(*args, **kwargs, file=self.output)
-
-    def variable(self, name, value):
-        self.print('%s = %s' % (name, value))
-        self.had_vars = True
-
-    def begin_scope(self):
-        self.indent = '  '
-        self.had_vars = False
-
-    def end_scope(self):
-        if self.had_vars:
-            self.print()
-        self.indent = ''
-        self.had_vars = False
-
-    def begin_pool(self, name):
-        self.print('pool %s' % name)
-        self.begin_scope()
-
-    def begin_rule(self, name):
-        self.print('rule %s' % name)
-        self.begin_scope()
-
-    def begin_build(self, outputs, implicit_outputs, rule, inputs, implicit, order_only):
-        all_outputs = list(outputs)
-        all_inputs = list(inputs)
-
-        if implicit:
-            all_inputs.append('|')
-            all_inputs.extend(implicit)
-        if order_only:
-            all_inputs.append('||')
-            all_inputs.extend(order_only)
-        if implicit_outputs:
-            all_outputs.append('|')
-            all_outputs.extend(implicit_outputs)
-
-        self.print('build %s: %s' % (' '.join(all_outputs),
-                                     ' '.join([rule] + all_inputs)))
-        self.begin_scope()
-
-    def default(self, targets):
-        self.print('default %s' % ' '.join(targets))
-
-
-# ---- emit compile_commands.json ----
-
-class Compdb(NinjaParserEventsWithVars):
-    ARGS = argparse.ArgumentParser(description='Emit compile_commands.json.')
-    ARGS.add_argument('rules', nargs='*',
-                      help='The ninja rules to emit compilation commands for.')
-
-    def __init__(self, output, parser, args):
-        super().__init__(parser)
-        self.output = output
-        self.rules = args.rules
-        self.sep = ''
-
-    def begin_file(self):
-        self.output.write('[')
-        self.directory = os.getcwd()
-
-    def print_entry(self, **entry):
-        entry['directory'] = self.directory
-        self.output.write(self.sep + json.dumps(entry))
-        self.sep = ',\n'
-
-    def begin_build(self, out, iout, rule, in_, iin, orderdep):
-        if in_ and rule in self.rules:
-            super().begin_build(out, iout, rule, in_, iin, orderdep)
-        else:
-            self.scope = Scope(self)
-
-    def end_build(self, scope, out, iout, rule, in_, iin, orderdep):
-        self.print_entry(command=scope.expand('${command}'), file=in_[0])
-
-    def end_file(self):
-        self.output.write(']\n')
-
-
-# ---- clean output files ----
-
-class Clean(NinjaParserEventsWithVars):
-    ARGS = argparse.ArgumentParser(description='Remove output build files.')
-    ARGS.add_argument('-g', dest='generator', action='store_true',
-                      help='clean generated files too')
-
-    def __init__(self, output, parser, args):
-        super().__init__(parser)
-        self.dry_run = args.dry_run
-        self.verbose = args.verbose or args.dry_run
-        self.generator = args.generator
-
-    def begin_file(self):
-        print('Cleaning... ', end=(None if self.verbose else ''), flush=True)
-        self.cnt = 0
-
-    def end_file(self):
-        print('%d files' % self.cnt)
-
-    def do_clean(self, *files):
-        for f in files:
-            if self.dry_run:
-                if os.path.exists(f):
-                    self.cnt += 1
-                    print('Would remove ' + f)
-                    continue
-            else:
-                try:
-                    if os.path.isdir(f):
-                        shutil.rmtree(f)
-                    else:
-                        os.unlink(f)
-                    self.cnt += 1
-                    if self.verbose:
-                        print('Removed ' + f)
-                except FileNotFoundError:
-                    pass
-
-    def end_build(self, scope, out, iout, rule, in_, iin, orderdep):
-        if rule == 'phony':
-            return
-        if self.generator:
-            rspfile = scope.expand('${rspfile}')
-            if rspfile:
-                self.do_clean(rspfile)
-        if self.generator or not scope.expand('${generator}'):
-            self.do_clean(*out, *iout)
-            depfile = scope.expand('${depfile}')
-            if depfile:
-                self.do_clean(depfile)
-
-
-# ---- convert build.ninja to makefile ----
-
-class Ninja2Make(NinjaParserEventsWithVars):
-    ARGS = argparse.ArgumentParser(description='Convert build.ninja to a Makefile.')
-    ARGS.add_argument('--clean', dest='emit_clean', action='store_true',
-                      help='Emit clean/distclean rules.')
-    ARGS.add_argument('--doublecolon', action='store_true',
-                      help='Emit double-colon rules for phony targets.')
-    ARGS.add_argument('--omit', metavar='TARGET', nargs='+',
-                      help='Targets to omit.')
-
-    def __init__(self, output, parser, args):
-        super().__init__(parser)
-        self.output = output
-
-        self.emit_clean = args.emit_clean
-        self.doublecolon = args.doublecolon
-        self.omit = set(args.omit)
-
-        if self.emit_clean:
-            self.omit.update(['clean', 'distclean'])
-
-        # Lists of targets are kept in memory and emitted only at the
-        # end because appending is really inefficient in GNU make.
-        # We only do it when it's O(#rules) or O(#variables), but
-        # never when it could be O(#targets).
-        self.depfiles = list()
-        self.rspfiles = list()
-        self.build_vars = defaultdict(lambda: dict())
-        self.rule_targets = defaultdict(lambda: list())
-        self.stamp_targets = defaultdict(lambda: list())
-        self.all_outs = set()
-        self.all_ins = set()
-        self.all_phony = set()
-        self.seen_default = False
-
-    def print(self, *args, **kwargs):
-        print(*args, **kwargs, file=self.output)
-
-    def dollar_token(self, word, in_path=False):
-        if in_path and word == ' ':
-            self.parser.parse_error('Make does not support spaces in filenames')
-        return '$$' if word == '$' else word
-
-    def print_phony(self, outs, ins):
-        targets = ' '.join(outs).replace('$', '$$')
-        deps = ' '.join(ins).replace('$', '$$')
-        deps = deps.strip()
-        if self.doublecolon:
-            self.print(targets + '::' + (' ' if deps else '') + deps + ';@:')
-        else:
-            self.print(targets + ':' + (' ' if deps else '') + deps)
-        self.all_phony.update(outs)
-
-    def begin_file(self):
-        self.print(r'# This is an automatically generated file, and it shows.')
-        self.print(r'ninja-default:')
-        self.print(r'.PHONY: ninja-default ninja-clean ninja-distclean')
-        if self.emit_clean:
-            self.print(r'ninja-clean:: ninja-clean-start; $(if $V,,@)rm -f ${ninja-depfiles}')
-            self.print(r'ninja-clean-start:; $(if $V,,@echo Cleaning...)')
-            self.print(r'ninja-distclean:: clean; $(if $V,,@)rm -f ${ninja-rspfiles}')
-            self.print(r'.PHONY: ninja-clean-start')
-            self.print_phony(['clean'], ['ninja-clean'])
-            self.print_phony(['distclean'], ['ninja-distclean'])
-        self.print(r'vpath')
-        self.print(r'NULL :=')
-        self.print(r'SPACE := ${NULL} #')
-        self.print(r'MAKEFLAGS += -rR')
-        self.print(r'define NEWLINE')
-        self.print(r'')
-        self.print(r'endef')
-        self.print(r'.var.in_newline = $(subst $(SPACE),$(NEWLINE),${.var.in})')
-        self.print(r"ninja-command = $(if $V,,$(if ${.var.description},@printf '%s\n' '$(subst ','\'',${.var.description})' && ))${.var.command}")
-        self.print(r"ninja-command-restat = $(if $V,,$(if ${.var.description},@printf '%s\n' '$(subst ','\'',${.var.description})' && ))${.var.command} && if test -e $(firstword ${.var.out}); then printf '%s\n' ${.var.out} > $@; fi")
-
-    def end_file(self):
-        def natural_sort_key(s, _nsre=re.compile('([0-9]+)')):
-            return [int(text) if text.isdigit() else text.lower()
-                    for text in _nsre.split(s)]
-
-        self.print()
-        self.print('ninja-outputdirs :=')
-        for rule in self.rule_vars:
-            if rule == 'phony':
-                continue
-            self.print('ninja-targets-%s := %s' % (rule, ' '.join(self.rule_targets[rule])))
-            self.print('ninja-stamp-%s := %s' % (rule, ' '.join(self.stamp_targets[rule])))
-            self.print('ninja-outputdirs += $(sort $(dir ${ninja-targets-%s}))' % rule)
-            self.print()
-        self.print('dummy := $(shell mkdir -p . $(sort $(ninja-outputdirs)))')
-        self.print('ninja-depfiles :=' + ' '.join(self.depfiles))
-        self.print('ninja-rspfiles :=' + ' '.join(self.rspfiles))
-        self.print('-include ${ninja-depfiles}')
-        self.print()
-        for targets in self.build_vars:
-            for name, value in self.build_vars[targets].items():
-                self.print('%s: private .var.%s := %s' %
-                           (targets, name, value.replace('$', '$$')))
-            self.print()
-        if not self.seen_default:
-            default_targets = sorted(self.all_outs - self.all_ins, key=natural_sort_key)
-            self.print('ninja-default: ' + ' '.join(default_targets))
-
-        # This is a hack...  Meson declares input meson.build files as
-        # phony, because Ninja does not have an equivalent of Make's
-        # "path/to/file:" declaration that ignores "path/to/file" even
-        # if it is absent.  However, Makefile.ninja wants to depend on
-        # build.ninja, which in turn depends on these phony targets which
-        # would cause Makefile.ninja to be rebuilt in a loop.
-        phony_targets = sorted(self.all_phony - self.all_ins, key=natural_sort_key)
-        self.print('.PHONY: ' + ' '.join(phony_targets))
-
-    def variable(self, name, value):
-        super().variable(name, value)
-        if self.scope is None:
-            self.global_vars[name] = self.expand(value)
-            self.print('.var.%s := %s' % (name, self.global_vars[name]))
-
-    def begin_build(self, out, iout, rule, in_, iin, orderdep):
-        if any(x in self.omit for x in out):
-            self.scope = Scope(self)
-            return
-
-        super().begin_build(out, iout, rule, in_, iin, orderdep)
-        self.current_targets = ' '.join(self.scope.out + self.scope.iout).replace('$', '$$')
-
-    def end_build(self, scope, out, iout, rule, in_, iin, orderdep):
-        self.rule_targets[rule] += self.scope.out
-        self.rule_targets[rule] += self.scope.iout
-
-        self.all_outs.update(self.scope.iout)
-        self.all_outs.update(self.scope.out)
-        self.all_ins.update(self.scope.in_)
-        self.all_ins.update(self.scope.iin)
-
-        targets = self.current_targets
-        self.current_targets = None
-        if rule == 'phony':
-            # Phony rules treat order-only dependencies as normal deps
-            self.print_phony(out + iout, in_ + iin + orderdep)
-            return
-
-        inputs = ' '.join(in_ + iin).replace('$', '$$')
-        orderonly = ' '.join(orderdep).replace('$', '$$')
-
-        rspfile = scope.expand('${rspfile}')
-        if rspfile:
-            rspfile_content = scope.expand('${rspfile_content}')
-            with open(rspfile, 'w') as f:
-                f.write(rspfile_content)
-            inputs += ' ' + rspfile
-            self.rspfiles.append(rspfile)
-
-        restat = 'restat' in self.scope.build_vars or 'restat' in self.rule_vars[rule]
-        depfile = scope.expand('${depfile}')
-        build_vars = {
-            'command': scope.expand('${command}'),
-            'description': scope.expand('${description}'),
-            'out': scope.expand('${out}')
-        }
-
-        if restat and not depfile:
-            if len(out) == 1:
-                stamp = out[0] + '.stamp'
-            else:
-                stamp = '%s@%s.stamp' % (rule, sha1_text(targets)[0:11])
-            self.print('%s: %s; @:' % (targets, stamp))
-            self.print('ifneq (%s, $(wildcard %s))' % (targets, targets))
-            self.print('.PHONY: %s' % (stamp, ))
-            self.print('endif')
-            self.print('%s: %s | %s; ${ninja-command-restat}' % (stamp, inputs, orderonly))
-            self.rule_targets[rule].append(stamp)
-            self.stamp_targets[rule].append(stamp)
-            self.build_vars[stamp] = build_vars
-        else:
-            self.print('%s: %s | %s; ${ninja-command}' % (targets, inputs, orderonly))
-            self.build_vars[targets] = build_vars
-            if depfile:
-                self.depfiles.append(depfile)
-
-    def end_rule(self, scope, name):
-        # Note that the generator pseudo-variable could also be attached
-        # to a build block rather than a rule.  This is not handled here
-        # in order to reduce the number of "rm" invocations.  However,
-        # "ninjatool.py -t clean" does that correctly.
-        target = 'distclean' if scope.generator else 'clean'
-        self.print('ninja-%s:: ; $(if $V,,@)rm -f ${ninja-stamp-%s}' % (target, name))
-        if self.emit_clean:
-            self.print('ninja-%s:: ; $(if $V,,@)rm -rf ${ninja-targets-%s}' % (target, name))
-
-    def default(self, targets):
-        self.print("ninja-default: " + ' '.join(targets))
-        self.seen_default = True
-
-
-# ---- command line parsing ----
-
-# we cannot use subparsers because tools are chosen through the "-t"
-# option.
-
-class ToolAction(argparse.Action):
-    def __init__(self, option_strings, dest, choices, metavar='TOOL', nargs=None, **kwargs):
-        if nargs is not None:
-            raise ValueError("nargs not allowed")
-        super().__init__(option_strings, dest, required=True, choices=choices,
-                         metavar=metavar, **kwargs)
-
-    def __call__(self, parser, namespace, value, option_string):
-        tool = self.choices[value]
-        setattr(namespace, self.dest, tool)
-        tool.ARGS.prog = '%s %s %s' % (parser.prog, option_string, value)
-
-
-class ToolHelpAction(argparse.Action):
-    def __init__(self, option_strings, dest, nargs=None, **kwargs):
-        if nargs is not None:
-            raise ValueError("nargs not allowed")
-        super().__init__(option_strings, dest, nargs=0, **kwargs)
-
-    def __call__(self, parser, namespace, values, option_string=None):
-        if namespace.tool:
-            namespace.tool.ARGS.print_help()
-        else:
-            parser.print_help()
-        parser.exit()
-
-
-tools = {
-    'test': Writer,
-    'ninja2make': Ninja2Make,
-    'compdb': Compdb,
-    'clean': Clean,
-}
-
-parser = argparse.ArgumentParser(description='Process and transform build.ninja files.',
-                                 add_help=False)
-parser.add_argument('-C', metavar='DIR', dest='dir', default='.',
-                    help='change to DIR before doing anything else')
-parser.add_argument('-f', metavar='FILE', dest='file', default='build.ninja',
-                    help='specify input build file [default=build.ninja]')
-parser.add_argument('-n', dest='dry_run', action='store_true',
-                    help='do not actually do anything')
-parser.add_argument('-v', dest='verbose', action='store_true',
-                    help='be more verbose')
-
-parser.add_argument('-t', dest='tool', choices=tools, action=ToolAction,
-                    help='choose the tool to run')
-parser.add_argument('-h', '--help', action=ToolHelpAction,
-                    help='show this help message and exit')
-
-if len(sys.argv) >= 2 and sys.argv[1] == '--version':
-    print('1.8')
-    sys.exit(0)
-
-args, tool_args = parser.parse_known_args()
-args.tool.ARGS.parse_args(tool_args, args)
-
-os.chdir(args.dir)
-with open(args.file, 'r') as f:
-    parser = NinjaParser(args.file, f)
-    try:
-        events = args.tool(sys.stdout, parser, args)
-    except InvalidArgumentError as e:
-        parser.error(str(e))
-    parser.parse(events)