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CGeneratorz Uses the same visitor pattern as c_ast.NodeVisitor, but modified to
return a value from each visit method, using string accumulation in
generic_visit.
Fc C s d| _ || _dS )z Constructs C-code generator
reduce_parentheses:
if True, eliminates needless parentheses on binary operators
N) indent_levelreduce_parentheses)selfr r :/tmp/pip-build-_d5lkt3n/pycparser/pycparser/c_generator.py__init__ s zCGenerator.__init__c C s
d| j S )N )r )r r r r _make_indent s zCGenerator._make_indentc C s d|j j }t| || j|S )Nvisit_) __class____name__getattr
generic_visit)r nodemethodr r r visit s zCGenerator.visitc s, |d kr dS dj fdd|j D S d S )N c 3 s | ]\}} j |V qd S )N)r ).0Zc_namec)r r r ' s z+CGenerator.generic_visit..)joinchildren)r r r )r r r # s zCGenerator.generic_visitc C s |j S )N)value)r nr r r visit_Constant) s zCGenerator.visit_Constantc C s |j S )N)name)r r r r r visit_ID, s zCGenerator.visit_IDc C s d}|j r|d|j 7 }|S )Nz#pragmar )string)r r retr r r visit_Pragma/ s zCGenerator.visit_Pragmac C s$ | j |j}|d | j|j d S )N[])_parenthesize_unless_simpler r Z subscript)r r Zarrrefr r r visit_ArrayRef5 s zCGenerator.visit_ArrayRefc C s" | j |j}||j | j|j S )N)r% r typer field)r r Zsrefr r r visit_StructRef9 s zCGenerator.visit_StructRefc C s$ | j |j}|d | j|j d S )N())r% r r args)r r Zfrefr r r visit_FuncCall= s zCGenerator.visit_FuncCallc C s\ |j dkrd| j|j S | j|j}|j dkr8d| S |j dkrJd| S d|j |f S d S )Nsizeofz
sizeof(%s)zp++z%s++zp--z%s--z%s%s)opr exprr% )r r operandr r r
visit_UnaryOpA s
zCGenerator.visit_UnaryOpr r )z||z&&|^&z==z!=>z>=>z<<+-*/%c s@ j j fdd}j j fdd}d| j|f S )Nc s6 j | p2jo2t| tjo2j| j j j k S )N)_is_simple_noder
isinstancer BinaryOpprecedence_mapr/ )d)r r r r k s
z+CGenerator.visit_BinaryOp..c s6 j | p2jo2t| tjo2j| j j j k S )N)rE r rF r rG rH r/ )rI )r r r r rJ w s
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zCGenerator.visit_BinaryOpc C s* | j |jdd }d| j|j|j|f S )Nc S s t | tjS )N)rF r
Assignment)r r r r rJ s z-CGenerator.visit_Assignment..z%s %s %s)rK Zrvaluer Zlvaluer/ )r r rN r r r visit_Assignment| s
zCGenerator.visit_Assignmentc C s dj |jS )Nr )r names)r r r r r visit_IdentifierType s z CGenerator.visit_IdentifierTypec C sJ t |tjr d| j| d S t |tjr.)r declslenr )r r r[ r )r r visit_DeclList s
zCGenerator.visit_DeclListc C s2 d}|j r |dj|j d 7 }|| j|j7 }|S )Nr r )storager _generate_typer' )r r r[ r r r
visit_Typedef s
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emit_declnamer+ r )rb Zto_typer% r0 )r r r[ r r r
visit_Cast s zCGenerator.visit_Castc C s. g }x |j D ]}|j| j| q W dj|S )Nz, )exprsappendrW r )r r visited_subexprsr0 r r r visit_ExprList s zCGenerator.visit_ExprListc C s. g }x |j D ]}|j| j| q W dj|S )Nz, )rf rg rW r )r r rh r0 r r r visit_InitList s zCGenerator.visit_InitListc C s | j |ddS )Nenum)r )_generate_struct_union_enum)r r r r r
visit_Enum s zCGenerator.visit_Enumc C s dj | j|jS )Nz _Alignas({}))formatr alignment)r r r r r
visit_Alignas s zCGenerator.visit_Alignasc C s< |j sdj| j |jdS dj| j |j| j|j dS d S )Nz{indent}{name},
)indentr z{indent}{name} = {value},
)rq r r )r rn r r r )r r r r r visit_Enumerator s
zCGenerator.visit_Enumeratorc sj j |j}d _ j |j}|jrVdj fdd|jD }|d | d | d S |d | d S d S )Nr z;
c 3 s | ]} j |V qd S )N)r )r p)r r r r s z+CGenerator.visit_FuncDef..
)r r] r bodyZ param_declsr )r r r] ru Zknrdeclsr )r r
visit_FuncDef s zCGenerator.visit_FuncDefc C sf d}x\|j D ]R}t|tjr,|| j|7 }q t|tjrL|| j|d 7 }q || j|d 7 }q W |S )Nr rt z;
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visit_FileAST s zCGenerator.visit_FileASTc s` j d } jd7 _|jr>|dj fdd|jD 7 } jd8 _| j d 7 }|S )Nz{
r3 r c 3 s | ]} j |V qd S )N)_generate_stmt)r stmt)r r r r s z,CGenerator.visit_Compound..z}
)r r Z block_itemsr )r r r[ r )r r visit_Compound s zCGenerator.visit_Compoundc C s$ d| j |j d | j |j d S )Nr* z){rU )r r' rY )r r r r r visit_CompoundLiteral s z CGenerator.visit_CompoundLiteralc C s dS )N;r )r r r r r visit_EmptyStatement s z CGenerator.visit_EmptyStatementc s dj fdd|jD S )Nz, c 3 s | ]} j |V qd S )N)r )r param)r r r r s z-CGenerator.visit_ParamList..)r params)r r r )r r visit_ParamList s zCGenerator.visit_ParamListc C s& d}|j r |d| j|j 7 }|d S )Nreturnr r} )r0 r )r r r[ r r r visit_Return s zCGenerator.visit_Returnc C s dS )Nzbreak;r )r r r r r visit_Break s zCGenerator.visit_Breakc C s dS )Nz continue;r )r r r r r visit_Continue s zCGenerator.visit_Continuec C sH d| j |j d }|d| j |j d 7 }|d| j |j d 7 }|S )Nr* z) ? z) : r+ )rW condiftrueiffalse)r r r[ r r r visit_TernaryOp s zCGenerator.visit_TernaryOpc C sd d}|j r|| j|j 7 }|d7 }|| j|jdd7 }|jr`|| j d 7 }|| j|jdd7 }|S )Nzif (z)
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)r r ry r r r )r r r[ r r r visit_If s zCGenerator.visit_Ifc C s~ d}|j r|| j|j 7 }|d7 }|jr<|d| j|j 7 }|d7 }|jr^|d| j|j 7 }|d7 }|| j|jdd7 }|S )Nzfor (r} r z)
T)r )rY r r nextry rz )r r r[ r r r visit_For
s zCGenerator.visit_Forc C s: d}|j r|| j|j 7 }|d7 }|| j|jdd7 }|S )Nzwhile (z)
T)r )r r ry rz )r r r[ r r r visit_While s zCGenerator.visit_Whilec C sJ d}|| j |jdd7 }|| j d 7 }|jr>|| j|j7 }|d7 }|S )Nzdo
T)r zwhile (z);)ry rz r r r )r r r[ r r r
visit_DoWhile s zCGenerator.visit_DoWhilec C s> d}|| j |j7 }|jr2|d7 }|| j |j7 }|d7 }|S )Nz_Static_assert(,r+ )r r message)r r r[ r r r visit_StaticAssert$ s z CGenerator.visit_StaticAssertc C s, d| j |j d }|| j|jdd7 }|S )Nzswitch (z)
T)r )r r ry rz )r r r[ r r r visit_Switch- s zCGenerator.visit_Switchc C s: d| j |j d }x |jD ]}|| j|dd7 }q W |S )Nzcase z:
T)r )r r0 stmtsry )r r r[ rz r r r
visit_Case2 s zCGenerator.visit_Casec C s* d}x |j D ]}|| j|dd7 }q W |S )Nz default:
T)r )r ry )r r r[ rz r r r
visit_Default8 s zCGenerator.visit_Defaultc C s |j d | j|j S )Nz:
)r ry rz )r r r r r visit_Label> s zCGenerator.visit_Labelc C s d|j d S )Nzgoto r} )r )r r r r r
visit_GotoA s zCGenerator.visit_Gotoc C s dS )Nz...r )r r r r r visit_EllipsisParamD s z CGenerator.visit_EllipsisParamc C s | j |dS )Nstruct)rl )r r r r r visit_StructG s zCGenerator.visit_Structc C s | j |jS )N)rb r' )r r r r r visit_TypenameJ s zCGenerator.visit_Typenamec C s | j |dS )Nunion)rl )r r r r r visit_UnionM s zCGenerator.visit_Unionc C s^ d}x@|j D ]6}t|tjr,|d|j 7 }q |d| j| d 7 }q W |d| j|j 7 }|S )Nr .r# r$ z = )r rF r IDr rW r0 )r r r[ r r r r visit_NamedInitializerP s z!CGenerator.visit_NamedInitializerc C s
| j |S )N)rb )r r r r r visit_FuncDeclZ s zCGenerator.visit_FuncDeclc C s | j |ddS )NF)rd )rb )r r r r r visit_ArrayDecl] s zCGenerator.visit_ArrayDeclc C s | j |ddS )NF)rd )rb )r r r r r visit_TypeDecl` s zCGenerator.visit_TypeDeclc C s | j |ddS )NF)rd )rb )r r r r r
visit_PtrDeclc s zCGenerator.visit_PtrDeclc C s |d kr|j }| j}n(|dks"t|jdkr0dn|jj}| j}|d |jpLd }|dk r|d7 }|| j 7 }| jd7 _|d 7 }|||7 }| jd8 _|| j d
7 }|S ) zq Generates code for structs, unions, and enums. name should be
'struct', 'union', or 'enum'.
r r rk Nr r rt r3 z{
rU )r r ) r^ _generate_struct_union_bodyAssertionErrorvaluesZ enumerators_generate_enum_bodyr r r )r r r membersZ
body_functionr[ r r r rl f s z&CGenerator._generate_struct_union_enumc s dj fdd|D S )Nr c 3 s | ]} j |V qd S )N)ry )r r] )r r r r s z9CGenerator._generate_struct_union_body..)r )r r r )r r r ~ s z&CGenerator._generate_struct_union_bodyc s$ dj fdd|D d d d S )Nr c 3 s | ]} j |V qd S )N)r )r r )r r r r s z1CGenerator._generate_enum_body..r3 rt )r )r r r )r r r s z CGenerator._generate_enum_bodyc C s t |}|r| jd7 _| j }|r4| jd8 _|tjtjtjtjtjtj tj
tj tj tj
tjtjtjf
kr|| j| d S |tjfkr| j|S |tjfkr|| j| S || j| d S dS )z Generation from a statement node. This method exists as a wrapper
for individual visit_* methods to handle different treatment of
some statements in this context.
r3 z;
rt N)r' r r r DeclrP ZCastUnaryOprG Z TernaryOpFuncCallArrayRef StructRefConstantr ZTypedefrV r ZCompoundIf)r r r typrq r r r ry s"
zCGenerator._generate_stmtc C sf d}|j rdj|j d }|jr4|dj|jd 7 }|jrR|| j|jd d 7 }|| j|j7 }|S )z& Generation from a Decl node.
r r r )Zfuncspecr ra Zalignr rb r' )r r r[ r r r rX s zCGenerator._generate_declTc C s t |}|tjkrd}|jr2|dj|jd 7 }|| j|j 7 }|jrR|rR|jnd}xt|D ]\}}t|tj r|dkrt||d tj
rd| d }|d7 }|j r|dj|j d 7 }|| j|j d 7 }qbt|tj
r,|dkrt||d tj
rd| d }|d| j|j d 7 }qbt|tj
rb|jrdd dj|j|rZd| ndf }qbd
| }qbW |r|d| 7 }|S |tjkr| j|j S |tjkr| j|j |d S |tjkrdj|jd S |tj tj
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fkr| j|j ||g |d S | j|S d S )
z Recursive generation from a type node. n is the type node.
modifiers collects the PtrDecl, ArrayDecl and FuncDecl modifiers
encountered on the way down to a TypeDecl, to allow proper
generation from it.
r r r r r* r+ r# r$ z* %s%srB )rd N)r' r ZTypeDeclZqualsr r Zdeclname enumeraterF Z ArrayDeclZPtrDeclZ dim_qualsZdimZFuncDeclr, r rX ZTypenamerb ZIdentifierTyperR ) r r modifiersrd r r[ Znstrimodifierr r r rb sN
zCGenerator._generate_typec C s& | j |}||r d| d S |S dS )z Visits 'n' and returns its string representation, parenthesized
if the condition function applied to the node returns True.
r* r+ N)rW )r r conditionr[ r r r rK s
zCGenerator._parenthesize_ifc s j | fddS )z. Common use case for _parenthesize_if
c s j | S )N)rE )rI )r r r rJ s z8CGenerator._parenthesize_unless_simple..)rK )r r r )r r r% s z&CGenerator._parenthesize_unless_simplec C s t |tjtjtjtjtjfS )z~ Returns True for nodes that are "simple" - i.e. nodes that always
have higher precedence than operators.
)rF r r r r r r )r r r r r rE s zCGenerator._is_simple_nodeN)F)F)F)Cr
__module__ __qualname____doc__r
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