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fix ending quote parsing error in qstring #332

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fix ending quote parsing error in qstring #332

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7 changes: 7 additions & 0 deletions src/lmql/language/compiler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -425,8 +425,15 @@ def transform_Constant(self, constant, constraints=None):
return constant

# transform expressions embedded in f-strings
# in case ending with quote, add a trailing space to avoid SyntaxError: unterminated string literal
# check issue #324
if compiled_qstring.endswith('"'):
compiled_qstring += " "
qstring_as_fstring: ast.JoinedStr = ast.parse(f'f"""{compiled_qstring}"""').body[0].value

function_call_transformer = FunctionCallTransformation()
# remove the added space
qstring_as_fstring.values[-1].value = qstring_as_fstring.values[-1].value[:-1]
qstring_as_fstring.values = [function_call_transformer.visit(v) for v in qstring_as_fstring.values]

# check and collect extra args for decoder, type and decorators
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