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34 lines
1.2 KiB
34 lines
1.2 KiB
from .context import Context, CommandCallable # This is there because of a wild circular import dependency between many functions and classes
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from panflute import CodeBlock, Null
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from . import command_env
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from .util import nullify
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def parse_command(code: str) -> CommandCallable:
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code_lines = code.split("\n")
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tabs = False
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for line in code_lines:
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if len(line) != 0 and line[0] == "\t":
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tabs = True
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break
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indented_code_lines = []
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for line in code_lines:
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indented_code_lines.append(("\t" if tabs else " ")+line)
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code = "def command(element: Command, context: Context, processor: NOPProcessor) -> list[Element]:\n"+"\n".join(indented_code_lines)
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env = {**command_env.__dict__}
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exec(code, env)
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return env["command"]
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# This function is called in trasform.py, defining a command which can be
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# called later
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def handle_command_define(e: CodeBlock, c: Context) -> Null:
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command = parse_command(e.text)
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if "define" in e.attributes:
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if not c.get_command(e.attributes["define"]):
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c.set_command(e.attributes["define"], command)
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else:
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raise NameError(f"Command already defined: '{e.attributes['define']}'")
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if "redefine" in e.attributes:
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c.set_command(e.attributes["redefine"], command)
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return nullify(e)
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