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https://github.com/lightningdevkit/rust-lightning.git
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65108a022f
In the next commit we'll drop the `ahash` dependency in favor of directly calling `getrandom` to seed our hash tables. However, we'd like to depend on `getrandom` only on certain platforms *and* only when certain features (no-std) are set. This introduces an indirection crate to do so, allowing us to depend on it only when `no-std` is set but only depending on `getrandom` on platforms which it supports.
160 lines
4.6 KiB
Python
Executable file
160 lines
4.6 KiB
Python
Executable file
#!/usr/bin/env python3
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# Rust is fairly relaxed in checking the validity of arguments passed to #[cfg].
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# While it should probably be more strict when checking features, it cannot be
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# strict when checking loose cfg tags, because those can be anything and are
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# simply passed to rustc via unconstrained arguments.
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#
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# Thus, we do it for rustc manually, but scanning all our source and checking
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# that all our cfg tags match a known cfg tag.
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import sys, glob, re
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def check_feature(feature):
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if feature == "std":
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pass
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elif feature == "no-std":
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pass
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elif feature == "ahash":
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pass
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elif feature == "getrandom":
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pass
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elif feature == "hashbrown":
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pass
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elif feature == "backtrace":
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pass
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elif feature == "grind_signatures":
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pass
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elif feature == "unsafe_revoked_tx_signing":
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pass
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elif feature == "futures":
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pass
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elif feature == "tokio":
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pass
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elif feature == "rest-client":
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pass
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elif feature == "rpc-client":
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pass
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elif feature == "serde":
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pass
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elif feature == "esplora-blocking":
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pass
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elif feature == "esplora-async":
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pass
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elif feature == "async-interface":
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pass
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elif feature == "electrum":
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pass
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elif feature == "time":
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pass
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elif feature == "_test_utils":
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pass
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elif feature == "_test_vectors":
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pass
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elif feature == "afl":
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pass
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elif feature == "honggfuzz":
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pass
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elif feature == "libfuzzer_fuzz":
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pass
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elif feature == "stdin_fuzz":
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pass
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elif feature == "max_level_off":
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pass
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elif feature == "max_level_error":
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pass
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elif feature == "max_level_warn":
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pass
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elif feature == "max_level_info":
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pass
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elif feature == "max_level_debug":
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pass
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elif feature == "max_level_trace":
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pass
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else:
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print("Bad feature: " + feature)
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assert False
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def check_target_os(os):
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if os == "windows":
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pass
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else:
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assert False
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def check_cfg_tag(cfg):
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if cfg == "fuzzing":
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pass
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elif cfg == "test":
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pass
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elif cfg == "debug_assertions":
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pass
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elif cfg == "c_bindings":
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pass
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elif cfg == "ldk_bench":
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pass
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elif cfg == "taproot":
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pass
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elif cfg == "async_signing":
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pass
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elif cfg == "require_route_graph_test":
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pass
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else:
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print("Bad cfg tag: " + cfg)
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assert False
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def check_cfg_args(cfg):
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if cfg.startswith("all(") or cfg.startswith("any(") or cfg.startswith("not("):
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brackets = 1
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pos = 4
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while pos < len(cfg):
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if cfg[pos] == "(":
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brackets += 1
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elif cfg[pos] == ")":
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brackets -= 1
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if brackets == 0:
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check_cfg_args(cfg[4:pos])
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if pos + 1 != len(cfg):
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assert cfg[pos + 1] == ","
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check_cfg_args(cfg[pos + 2:].strip())
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return
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pos += 1
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assert False
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assert(cfg.endswith(")"))
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check_cfg_args(cfg[4:len(cfg)-1])
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else:
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parts = [part.strip() for part in cfg.split(",", 1)]
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if len(parts) > 1:
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for part in parts:
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check_cfg_args(part)
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elif cfg.startswith("feature") or cfg.startswith("target_os") or cfg.startswith("target_pointer_width"):
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arg = cfg
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if cfg.startswith("feature"):
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arg = arg[7:].strip()
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elif cfg.startswith("target_os"):
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arg = arg[9:].strip()
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else:
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arg = arg[20:].strip()
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assert arg.startswith("=")
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arg = arg[1:].strip()
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assert arg.startswith("\"")
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assert arg.endswith("\"")
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arg = arg[1:len(arg)-1]
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assert not "\"" in arg
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if cfg.startswith("feature"):
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check_feature(arg)
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elif cfg.startswith("target_os"):
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check_target_os(arg)
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else:
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assert arg == "32" or arg == "64"
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else:
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check_cfg_tag(cfg.strip())
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cfg_regex = re.compile("#\[cfg\((.*)\)\]")
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for path in glob.glob(sys.path[0] + "/../**/*.rs", recursive = True):
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with open(path, "r") as file:
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while True:
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line = file.readline()
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if not line:
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break
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if "#[cfg(" in line:
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if not line.strip().startswith("//"):
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cfg_part = cfg_regex.match(line.strip()).group(1)
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check_cfg_args(cfg_part)
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