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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import string
import textwrap
import buildconfig
def generate_bool(name):
value = buildconfig.substs.get(name)
return f"pub const {name}: bool = {'true' if value else 'false'};\n"
def escape_rust_string(value):
"""escape the string into a Rust literal"""
# This could be more generous, but we're only escaping paths with it.
unescaped = string.ascii_letters + string.digits + "/$+-_~ "
result = ""
for ch in str(value):
if ch in unescaped:
result += ch
elif ch == "\r":
result += "\\r"
elif ch == "\n":
result += "\\n"
elif ch == "\\":
result += "\\\\"
elif ch == '"':
result += '\\"'
else:
result += "\\u{%x}" % ord(ch)
return '"%s"' % result
def generate(output):
# Write out a macro which can be used within `include!`-like methods to
# reference the topobjdir.
output.write(
textwrap.dedent(
f"""
/// Macro used to name a path in the objdir for use with macros like `include!`
#[macro_export]
macro_rules! objdir_path {{
($path:literal) => {{
concat!({escape_rust_string(buildconfig.topobjdir + "/")}, $path)
}}
}}
/// Macro used to name a path in the srcdir for use with macros like `include!`
#[macro_export]
macro_rules! srcdir_path {{
($path:literal) => {{
concat!({escape_rust_string(buildconfig.topsrcdir + "/")}, $path)
}}
}}
/// The objdir path for use in build scripts
pub const TOPOBJDIR: &str = {escape_rust_string(buildconfig.topobjdir)};
/// The srcdir path for use in build scripts
pub const TOPSRCDIR: &str = {escape_rust_string(buildconfig.topsrcdir)};
"""
)
)
# Finally, write out some useful booleans from the buildconfig.
output.write(generate_bool("MOZ_FOLD_LIBS"))
output.write(generate_bool("NIGHTLY_BUILD"))
output.write(generate_bool("RELEASE_OR_BETA"))
output.write(generate_bool("EARLY_BETA_OR_EARLIER"))
output.write(generate_bool("MOZ_DEV_EDITION"))
output.write(generate_bool("MOZ_ESR"))
output.write(generate_bool("MOZ_DIAGNOSTIC_ASSERT_ENABLED"))
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