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eZejejejddZdd Zdd Zdd ZdS )zPattern compiler.
The grammar is taken from PatternGrammar.txt.
The compiler compiles a pattern to a pytree.*Pattern instance.
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__module__ __qualname__ r r +/usr/local/lib/python3.8/lib2to3/patcomp.pyr s r c c sL t jt jt jh}tt| j}|D ] }|\}}}}}||kr&|V q&dS )z6Tokenizes a string suppressing significant whitespace.N) r NEWLINEINDENTDEDENTr generate_tokensioStringIOreadline) inputskiptokensZ quintupletypevaluestartendZ line_textr r r tokenize_wrapper s r c @ s: e Zd Zd
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rN } ztt|dW 5 d}~X Y nX |rb| ||fS | |S dS )z=Compiles a pattern string to a nested pytree.*Pattern object.)debugN)r r Z parse_tokensr Z
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S d sjt|d S ) Nr r zInvalid token: %rz Can't have details for tokenany_zInvalid symbol: %r([r4 F)r; r? r r STRINGr( r Z
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#r )rR rP rY ZTOKENc C s. | d rtjS | tjkr&tj| S d S d S )Nr )isalphar rR r Zopmap)r r r r rQ s
rQ c C s> |\}}}}|s|| j kr*tj|||dS tj|||dS dS )z9Converts raw node information to a Node or Leaf instance.)contextN)Z
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