mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-15 12:08:59 +00:00
68 lines
2.1 KiB
Plaintext
68 lines
2.1 KiB
Plaintext
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# generated from all_modules.py.mako
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# do not edit manually!
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# flake8: noqa
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# fmt: off
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# isort:skip_file
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<%
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from pathlib import Path
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from itertools import chain
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THIS = Path(local.filename).resolve()
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SRCDIR = THIS.parent
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PATTERNS = (
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"*.py",
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"storage/**/*.py",
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"trezor/**/*.py",
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"apps/**/*.py",
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)
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pyfiles = chain.from_iterable(sorted(SRCDIR.glob(p)) for p in PATTERNS)
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%>\
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from trezor.utils import halt
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# this module should not be part of the build, its purpose is only to add missed Qstrings
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halt("Tried to import excluded module.")
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# explanation:
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# uPy collects string literals and symbol names from all frozen modules, and converts
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# them to qstrings for certain usages. In particular, it appears that qualified names
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# of modules in sys.modules must be qstrings. However, the collection process is
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# imperfect. If `apps.common.mnemonic` is always imported as `from ..common import mnemonic`,
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# the string "apps.common.mnemonic" never appears in source code, is never collected,
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# but then is generated and interned at runtime.
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# A similar thing happens in reverse: if module `storage.cache` is always imported as
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# this name, then "storage.cache" is collected but neither "storage" nor "cache" alone.
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# Which is a problem, because "cache" is a symbol that is added to `storage`'s dict.
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#
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# We need to avoid run-time interning as much as possible, because it creates
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# uncollectable garbage in the GC arena.
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#
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# Below, every module is listed both as import (which collects the qualified name)
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# and as a symbol (which collects each individual component).
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# In addition, we list the alphabet, because apparently one-character strings are always
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# interned, and some operation somewhere (rendering?) is reading strings character by
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# character.
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% for pyfile in pyfiles:
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<%
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pyfile = pyfile.relative_to(SRCDIR)
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if pyfile.name == "__init__.py":
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import_name = str(pyfile.parent)
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else:
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import_name = str(pyfile.with_suffix(""))
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import_name = import_name.replace("/", ".")
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%>\
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${import_name}
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import ${import_name}
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% endfor
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# generate full alphabet
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<%
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ALPHABET = "abcdefghijklmnopqrstuvwxyz"
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%>\
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% for letter in ALPHABET:
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${letter}
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${letter.upper()}
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% endfor
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