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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/lib64/python3.6/patcomp.pyr s r c c sP t jt jt jh}tjtj| j}x(|D ] }|\}}}}}||kr(|V q(W dS )z6Tokenizes a string suppressing significant whitespace.N) r NEWLINEINDENTDEDENTr generate_tokensioStringIOreadline) inputskiptokensZ quintupletypevaluestartendZ line_textr r r tokenize_wrapper s
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zPatternCompiler.__init__Fc C sn t |}y| jj||d}W n0 tjk
rL } ztt|W Y dd}~X nX |r`| j||fS | j|S dS )z=Compiles a pattern string to a nested pytree.*Pattern object.)debugN)r r Z parse_tokensr Z
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d sht| dks|| dkr|j }tj|gg| | d}|dk r||_|j S )zXCompiles a node, recursively.
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S d sjt|d S ) Nr r zInvalid token: %rz Can't have details for tokenany_zInvalid symbol: %r([)r1 r2 F)r7 r; r r STRINGr' r Z
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z PatternCompiler.compile_basicc C s |j tjkstt|jS )N)r r NUMBERr; intr )r$ rC r r r rA s zPatternCompiler.get_int)N)FF)N)r r
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#r )rN rL rT ZTOKENc C s. | d j rtjS | tjkr&tj| S d S d S )Nr )isalphar rN r Zopmap)r r r r rM s
rM 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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