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https://github.com/LadybirdBrowser/ladybird
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922b811279
This replaces the C++ IPC compiler and generator with a python3 port. For validation, the parser is nearly a line-for-line port of the C++ parser. This patch includes lexer.py, which is a simple port of our GenericLexer, as the mechanics actually felt pretty nice in python as well. The code generator does not include a port of our SourceGenerator, as that felt less nice. Instead, we write directly to a TextIO instance. The generated output is almost byte-for-byte identical with our C++ generator, with trivial whitespace differences: * The C++ generator included extraneous newlines before and after all switch statements, which is not kept here. * The C++ generator did not include newlines between message handling functions, which we now do. * The C++ generator had some extraneous spaces at the end of some lines, and incorrect tabbing (3 spaces) at the beginning of some lines.
20 lines
442 B
Python
20 lines
442 B
Python
# Copyright (c) 2026-present, the Ladybird developers.
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#
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# SPDX-License-Identifier: BSD-2-Clause
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def string_hash(string: str) -> int:
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"""Port of AK::string_hash that produces the same u32 value."""
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h = 0
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for ch in string:
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h = (h + ord(ch)) & 0xFFFFFFFF
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h = (h + (h << 10)) & 0xFFFFFFFF
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h ^= h >> 6
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h = (h + (h << 3)) & 0xFFFFFFFF
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h ^= h >> 11
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h = (h + (h << 15)) & 0xFFFFFFFF
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return h
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