U ZʹjR4@srdZddlmZddlmZddlmZmZmZm Z ddl m Z ddl m Z ddd d d d d dfdd ddfdd ddfdd ddfdd ddfdd ddfdd ddfgdd ddfgdd d!d"d#d$d%d&d'd(d)d*d+d,d-d.dd/Zd0d1d2d3d4d5d6d7d8d9d:d;dd?d@dAdBdCdDdEdFdGdHdIdJdKdLdMdNdOdPdQdRdSdTdUdVdWdXdYdZd[d\d]d^d_d`dadbdcg4ZGdddedee ZdkdgdhZdidjZdfS)la Rust code printer The `RustCodePrinter` converts SymPy expressions into Rust expressions. A complete code generator, which uses `rust_code` extensively, can be found in `sympy.utilities.codegen`. The `codegen` module can be used to generate complete source code files. ) annotations)Any)SRationalFloatLambda equal_valued) CodePrinterfloorceilabssignumcCs t|dS)NrbaseexprR/var/www/html/bwave/python/venv/lib/python3.8/site-packages/sympy/printing/rust.pyIrZrecipcCs t|dS)Ng?rrrrrrJrsqrtcCs t|dS)NgrrrrrrKrz sqrt().recipcCs|tddkS)N)rrrrrrLrZcbrtcCs t|dS)NrrrrrrrMrZexp2rcCs|jSN is_integerrrrrrNrZpowircCs|j SrrrrrrrOrZpowfcCsdS)NTr)rrrrrPrrlnmaxminsincostanasinacosatanatan2sinhcoshtanhasinhacoshatanh)r ZceilingZAbssignPowrlogZMaxZMinr!r"r#r$r%r&r'r(r)r*r+r,r-rZabstractZalignofasZbecomeboxbreakconstcontinueZcratedoelseenumZexternfalsefinalfnforifimplinZletloopmacromatchmodmoveZmutZoffsetofoverrideZprivprocZpubZpurerefreturnSelfselfZsizeofZstaticstructsuperZtraittruetypeZtypeofunsafeZunsizedZuseZvirtualwherewhileyieldcsteZdZUdZdZdZeejfdide dZde d<ifd d Z d d Z d dZ ddZddZddZddZddZddZddZddZdNfd d! ZdOfd"d# Zd$d%Zd&d'Zd(d)Zd*d+Zd,d-ZdPd.d/ZdQd0d1ZdRd2d3ZdSd4d5Z dTd6d7Z!dUd8d9Z"dVd:d;Z#dWdd?Z%d@dAZ&dBdCZ'dDdEZ(dFdGZ)fdHdIZ*dJdKZ+dLdMZ,Z-S)XRustCodePrinterz>A printer to convert SymPy expressions to strings of Rust codeZ _rust_codeRustT) precisionuser_functionscontract dereferencezdict[str, Any]_default_settingscCsNt||tt|_|di}|j|t|dg|_tt|_dS)NrWrY) r __init__dictknown_functionsgetupdateset _dereferencereserved_words)rJsettingsZ userfuncsrrrr[s     zRustCodePrinter.__init__cCs|dS)Nr)rJprrr_rate_index_positionsz$RustCodePrinter._rate_index_positioncCsd|S)Nz%s;r)rJZ codestringrrr_get_statementszRustCodePrinter._get_statementcCsd|S)Nz// %sr)rJtextrrr _get_commentszRustCodePrinter._get_commentcCs d||fS)Nzconst %s: f64 = %s;r)rJnamevaluerrr_declare_number_constsz%RustCodePrinter._declare_number_constcCs ||Sr) indent_code)rJlinesrrr _format_codeszRustCodePrinter._format_codecs |j\}fddt|DS)Nc3s$|]}tD]}||fVqqdSr)range).0ijcolsrr s z;RustCodePrinter._traverse_matrix_indices..)shaperp)rJmatrowsrrtr_traverse_matrix_indicess z(RustCodePrinter._traverse_matrix_indicesc CsXg}g}d}|D]>}||||||j||jdd|dq||fS)Nz#for %(var)s in %(start)s..%(end)s {r)varstartend})append_printlowerupper)rJindicesZ open_linesZ close_linesZ loopstartrrrrr_get_loop_opening_endings   z(RustCodePrinter._get_loop_opening_endingcCsBt|jdkr d||dS|jr4|j|ddS||SdS)Nr()T)_type)lenargsrZ is_numberrJexprrrr_print_caller_vars z!RustCodePrinter._print_caller_varc s|jjjkrj|jj}d}d}t|tr6|}n|D]\}}}||jr:qTq:|dk r|dkrd|jd|t|jdkr|jdddndd}n`|dkrd |jd|d }n<|d krd |jd|d }nd ||jdd }|Snt |dr:t|j t r: |j |jS|jjj krj |jj\}}|rtfdd|Dr ||Sn |SdS)a< basic function for printing `Function` Function Style : 1. args[0].func(args[1:]), method with arguments 2. args[0].func(), method without arguments 3. args[1].func(), method without arguments (e.g. (e, x) => x.exp()) 4. func(args), function with arguments Nrz%(var)s.%(method)s(%(args)s)r, )r{methodrrz%(var)s.%(method)s())r{rrz%(func)s(%(args)s))funcr_imp_c3s|]}|VqdSr) _can_print)rqfrJrrrvMsz2RustCodePrinter._print_Function..)r__name__r] isinstancestrrrr stringifyhasattrrrrZ_rewriteable_functionsrallrewrite_print_not_supported) rJrZ cond_funcrstylecondretZtarget_fZ required_fsrrr_print_FunctionsL    &    $zRustCodePrinter._print_FunctioncCs:|jjr0|jjs0t|t|j|j}||S||Sr)rrrrNrrrrrrr _print_PowRs zRustCodePrinter._print_PowFcs t|}|r|dS|SdS)NZ_f64)rL _print_FloatrJrrr __class__rrrXs zRustCodePrinter._print_Floatcs t|}|r|dS|SdS)NZ_i32)rL_print_Integerrrrrr_s zRustCodePrinter._print_IntegercCs"t|jt|j}}d||fS)Nz %d_f64/%d.0)intreq)rJrrerrrr_print_RationalfszRustCodePrinter._print_RationalcCs,||j}||j}|j}d|||S)Nz{} {} {})rlhsrhsZrel_opformat)rJrlhs_coderhs_codeoprrr_print_Relationaljs  z!RustCodePrinter._print_RelationalcCs`|j}tj}tj}tt|jD]"}||j||7}|||9}q d||j j ||fS)N%s[%s]) rwrZZeroZOnereversedrpZrankrrrlabel)rJrZdimselemoffsetrrrrr_print_IndexedpszRustCodePrinter._print_IndexedcCs|jjSr)rrjrrrr _print_IdxzszRustCodePrinter._print_IdxcCs|jSr)rjrrrr _print_Dummy}szRustCodePrinter._print_DummycCsdS)NErrJrrrrr _print_Exp1szRustCodePrinter._print_Exp1cCsdS)NZPIrrrrr _print_PiszRustCodePrinter._print_PicCsdS)NINFINITYrrrrr_print_InfinityszRustCodePrinter._print_InfinitycCsdS)NZ NEG_INFINITYrrrrr_print_NegativeInfinitysz'RustCodePrinter._print_NegativeInfinitycCsdS)NrMrrrrr_print_BooleanTruesz"RustCodePrinter._print_BooleanTruecCsdS)Nr9rrrrr_print_BooleanFalsesz#RustCodePrinter._print_BooleanFalsecCs t|Sr)rrrrrr _print_boolszRustCodePrinter._print_boolcCsdS)NZNANrrrrr _print_NaNszRustCodePrinter._print_NaNcCs|jdjdkrtdg}t|jD]\}\}}|dkrP|d||nF|t|jdkr||dkr||dd7<n|dd||7<||}|||d q&|jd rd |Sd |SdS) NrTzAll Piecewise expressions must contain an (expr, True) statement to be used as a default condition. Without one, the generated expression may not evaluate to anything under some condition.rz if (%s) {rz else {z else if (%s) {r~inline  ) rr ValueError enumeraterrr _settingsjoin)rJrrnrrecZcode0rrr_print_Piecewises     z RustCodePrinter._print_PiecewisecCs ddlm}||j|ddS)Nr) PiecewiseF)deep)Zsympy.functionsrrr)rJrrrrr _print_ITEs zRustCodePrinter._print_ITEcs2|jdkr&ddfdd|DStddS)Nrz[%s]rc3s|]}|VqdSr)r)rqarrrrvsz4RustCodePrinter._print_MatrixBase..zLFull Matrix Support in Rust need Crates (https://crates.io/keywords/matrix).)rurr)rJArrr_print_MatrixBases z!RustCodePrinter._print_MatrixBasecCs ||Sr)r)rJrxrrr_print_SparseRepMatrixsz&RustCodePrinter._print_SparseRepMatrixcCs"d|j|j|j|jjdfS)Nrr)parentrsrrrwrrrr_print_MatrixElementsz$RustCodePrinter._print_MatrixElementcs&t|}||jkrd|S|SdS)Nz(*%s))rL _print_Symbolra)rJrrjrrrrs  zRustCodePrinter._print_SymbolcCslddlm}|j}|j}|jdrB||s6||rB|||S||}||}|d||fSdS)Nr) IndexedBaserXz%s = %s) Zsympy.tensor.indexedrrrrhasZ_doprint_loopsrrg)rJrrrrrrrrr_print_Assignments    z!RustCodePrinter._print_Assignmentc st|tr$||d}d|Sd}dddd|D}fdd|D}fd d|D}g}d }t|D]J\}} | d kr|| qr|||8}|d ||| f|||7}qr|S) z0Accepts a string of code or a list of code linesTrz ){rz{ z( )r~rcSsg|]}|dqS)z )lstriprqlinerrr sz/RustCodePrinter.indent_code..cs g|]}ttt|jqSr)ranymapendswithr) inc_tokenrrrscs g|]}ttt|jqSr)rrr startswithr) dec_tokenrrrsr)rrz%s%s)rrrm splitlinesrrr) rJcodeZ code_linestabZincreaseZdecreaseprettylevelnrr)rrrrms*     zRustCodePrinter.indent_code)F)F)F)F)F)F)F)F)F)F).r __module__ __qualname____doc__Z printmethodlanguager\r rZr`__annotations__r[rfrgrirlrorzrrrrrrrrrrrrrrrrrrrrrrrrrrrm __classcell__rrrrrSsV    8          rSNcKst|||S)aConverts an expr to a string of Rust code Parameters ========== expr : Expr A SymPy expression to be converted. assign_to : optional When given, the argument is used as the name of the variable to which the expression is assigned. Can be a string, ``Symbol``, ``MatrixSymbol``, or ``Indexed`` type. This is helpful in case of line-wrapping, or for expressions that generate multi-line statements. precision : integer, optional The precision for numbers such as pi [default=15]. user_functions : dict, optional A dictionary where the keys are string representations of either ``FunctionClass`` or ``UndefinedFunction`` instances and the values are their desired C string representations. Alternatively, the dictionary value can be a list of tuples i.e. [(argument_test, cfunction_string)]. See below for examples. dereference : iterable, optional An iterable of symbols that should be dereferenced in the printed code expression. These would be values passed by address to the function. For example, if ``dereference=[a]``, the resulting code would print ``(*a)`` instead of ``a``. human : bool, optional If True, the result is a single string that may contain some constant declarations for the number symbols. If False, the same information is returned in a tuple of (symbols_to_declare, not_supported_functions, code_text). [default=True]. contract: bool, optional If True, ``Indexed`` instances are assumed to obey tensor contraction rules and the corresponding nested loops over indices are generated. Setting contract=False will not generate loops, instead the user is responsible to provide values for the indices in the code. [default=True]. Examples ======== >>> from sympy import rust_code, symbols, Rational, sin, ceiling, Abs, Function >>> x, tau = symbols("x, tau") >>> rust_code((2*tau)**Rational(7, 2)) '8*1.4142135623731*tau.powf(7_f64/2.0)' >>> rust_code(sin(x), assign_to="s") 's = x.sin();' Simple custom printing can be defined for certain types by passing a dictionary of {"type" : "function"} to the ``user_functions`` kwarg. Alternatively, the dictionary value can be a list of tuples i.e. [(argument_test, cfunction_string)]. >>> custom_functions = { ... "ceiling": "CEIL", ... "Abs": [(lambda x: not x.is_integer, "fabs", 4), ... (lambda x: x.is_integer, "ABS", 4)], ... "func": "f" ... } >>> func = Function('func') >>> rust_code(func(Abs(x) + ceiling(x)), user_functions=custom_functions) '(fabs(x) + x.CEIL()).f()' ``Piecewise`` expressions are converted into conditionals. If an ``assign_to`` variable is provided an if statement is created, otherwise the ternary operator is used. Note that if the ``Piecewise`` lacks a default term, represented by ``(expr, True)`` then an error will be thrown. This is to prevent generating an expression that may not evaluate to anything. >>> from sympy import Piecewise >>> expr = Piecewise((x + 1, x > 0), (x, True)) >>> print(rust_code(expr, tau)) tau = if (x > 0) { x + 1 } else { x }; Support for loops is provided through ``Indexed`` types. With ``contract=True`` these expressions will be turned into loops, whereas ``contract=False`` will just print the assignment expression that should be looped over: >>> from sympy import Eq, IndexedBase, Idx >>> len_y = 5 >>> y = IndexedBase('y', shape=(len_y,)) >>> t = IndexedBase('t', shape=(len_y,)) >>> Dy = IndexedBase('Dy', shape=(len_y-1,)) >>> i = Idx('i', len_y-1) >>> e=Eq(Dy[i], (y[i+1]-y[i])/(t[i+1]-t[i])) >>> rust_code(e.rhs, assign_to=e.lhs, contract=False) 'Dy[i] = (y[i + 1] - y[i])/(t[i + 1] - t[i]);' Matrices are also supported, but a ``MatrixSymbol`` of the same dimensions must be provided to ``assign_to``. Note that any expression that can be generated normally can also exist inside a Matrix: >>> from sympy import Matrix, MatrixSymbol >>> mat = Matrix([x**2, Piecewise((x + 1, x > 0), (x, True)), sin(x)]) >>> A = MatrixSymbol('A', 3, 1) >>> print(rust_code(mat, A)) A = [x.powi(2), if (x > 0) { x + 1 } else { x }, x.sin()]; )rSZdoprint)rZ assign_torcrrr rust_codesmrcKstt|f|dS)z3Prints Rust representation of the given expression.N)printr)rrcrrrprint_rust_codeisr)N)r __future__rtypingrZ sympy.corerrrrZsympy.core.numbersr Zsympy.printing.codeprinterr r]rbrSrrrrrrs!           l6 p