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67 lines
1.8 KiB
Python
67 lines
1.8 KiB
Python
from parsing import ( # noqa: F401
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InstDef,
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Macro,
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Pseudo,
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Family,
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LabelDef,
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Parser,
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Context,
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CacheEffect,
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StackEffect,
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InputEffect,
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OpName,
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AstNode,
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)
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def prettify_filename(filename: str) -> str:
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# Make filename more user-friendly and less platform-specific,
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# it is only used for error reporting at this point.
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filename = filename.replace("\\", "/")
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if filename.startswith("./"):
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filename = filename[2:]
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if filename.endswith(".new"):
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filename = filename[:-4]
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return filename
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BEGIN_MARKER = "// BEGIN BYTECODES //"
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END_MARKER = "// END BYTECODES //"
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def parse_files(filenames: list[str]) -> list[AstNode]:
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result: list[AstNode] = []
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for filename in filenames:
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with open(filename) as file:
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src = file.read()
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psr = Parser(src, filename=prettify_filename(filename))
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# Skip until begin marker
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while tkn := psr.next(raw=True):
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if tkn.text == BEGIN_MARKER:
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break
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else:
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raise psr.make_syntax_error(
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f"Couldn't find {BEGIN_MARKER!r} in {psr.filename}"
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)
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start = psr.getpos()
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# Find end marker, then delete everything after it
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while tkn := psr.next(raw=True):
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if tkn.text == END_MARKER:
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break
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del psr.tokens[psr.getpos() - 1 :]
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# Parse from start
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psr.setpos(start)
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thing_first_token = psr.peek()
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while node := psr.definition():
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assert node is not None
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result.append(node) # type: ignore[arg-type]
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if not psr.eof():
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psr.backup()
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raise psr.make_syntax_error(
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f"Extra stuff at the end of {filename}", psr.next(True)
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)
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return result
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