これが私が望んでいたものの実用的な実装です。MathLinkTodd Gayley が提案したように、切断された接続のチェックを追加しましたhere。kernel5Evaluateスレーブ カーネルが通常とは異なる方法で終了した場合でも、確実に動作するようになりました。また、 の解析を大幅に改善し、Messageの診断メッセージをいくつか追加しましたkernel5Evaluate。コードは次のとおりです。
$kern5Path = "C:\\Program Files\\Wolfram Research\\Mathematica\\5.2\\MathKernel.exe";
Clear[printMessage, printPrint, printPostScript]
printMessage[str_String] :=
CellPrint@
Cell[BoxData[
RowBox[StringSplit[str,
x : ("MyDelimeterStart" | "MyDelimeterEnd") :> x] //. {x___,
"MyDelimeterStart", y_, "MyDelimeterEnd", z___} :> {x,
ToExpression[y], z}]], "Message",
CellLabel -> "(Kernel 5.2)", ShowCellLabel -> True];
printPostScript =
CellPrint@
Cell[GraphicsData["PostScript", #], "Graphics",
CellLabel -> "(Kernel 5.2 PostScript)", ShowCellLabel -> True] &;
printPrint[str_String] :=
CellPrint@
Cell[If[StringTake[str, -1] === "\n", StringDrop[str, -1], str],
"Print", CellLabel -> "(Kernel 5.2 print, text mode)",
ShowCellLabel -> True];
Clear[linkEvaluate]
SetAttributes[linkEvaluate, HoldAllComplete]
linkEvaluate[link_LinkObject, expr_] := Catch[
Module[{out = {}, postScript = {}, packet, result = Null},
If[LinkReadyQ[link],
While[LinkReadyQ[link],
Print["Rest of the buffer:\t",
packet = LinkRead[link, Hold]]];
If[Not@MatchQ[packet, Hold[InputNamePacket[_]]],
Message[kernel5Evaluate::linkIsBusy]; Throw[$Failed]]];
LinkWrite[link, Unevaluated[EnterExpressionPacket[expr]]];
While[
Check[Not@
MatchQ[packet = LinkRead[link, Hold],
Hold[InputNamePacket[_]]],
Message[kernel5Evaluate::linkIsClosed]; Throw[$Failed]],
Switch[packet,
Hold@DisplayPacket[_String],
AppendTo[postScript, First@First@packet],
Hold@DisplayEndPacket[_String],
AppendTo[postScript, First@First@packet];
printPostScript@StringJoin[postScript]; postScript = {},
Hold@MessagePacket[__], ,
Hold@TextPacket[_String],
If[StringMatchQ[First@First@packet,
WordCharacter .. ~~ "::" ~~ WordCharacter .. ~~ ": " ~~ __],
printMessage[First@First@packet],
printPrint[First@First@packet]],
Hold@OutputNamePacket[_], ,
Hold@ReturnExpressionPacket[_], result = First[First[packet]],
_, AppendTo[out, packet]
]
];
If[Length[out] > 0, Print["Unparsed packets: ", out]];
result
]];
Clear[kernel5Evaluate]
SetAttributes[kernel5Evaluate, HoldAllComplete]
kernel5Evaluate::usage = "kernel5Evaluate[\!\(\*
StyleBox[\"expr\",\nFontFamily->\"Times New Roman\",\n\
FontSlant->\"Italic\"]\)] writes \!\(\*
StyleBox[\"expr\",\nFontFamily->\"Times New Roman\",\n\
FontSlant->\"Italic\"]\) to MathKernel 5.2, returns output and prints \
messages generated during computation.";
kernel5Evaluate::linkIsBusy =
"Kernel 5.2 is still running previous calculation.";
kernel5Evaluate::linkIsClosed = "Connection to Kernel 5.2 is lost.";
kernel5Evaluate::kernel5NotFound =
"Path `1` not found. Please set variable $kern5Path to correct path \
to MathKernel 5.2.";
kernel5Evaluate[expr_] :=
If[TrueQ[MemberQ[Links[], $kern5]],
If[LinkReadyQ[$kern5]; First[LinkError[$kern5]] == 0,
With[{$kern5 = $kern5}, linkEvaluate[$kern5, expr]],
LinkClose[$kern5]; kernel5Evaluate[expr]],
Clear[$kern5];
If[FileExistsQ[$kern5Path],
$kern5 = LinkLaunch[$kern5Path <> " -mathlink -noinit"];
LinkRead[$kern5]; LinkWrite[$kern5,
Unevaluated[
EnterExpressionPacket[$MessagePrePrint = ("MyDelimeterStart" <>
ToString[ToBoxes[#]] <> "MyDelimeterEnd") &;
SetOptions[$Output, {PageWidth -> Infinity}];]]];
LinkRead[$kern5]; kernel5Evaluate[expr],
Message[kernel5Evaluate::kernel5NotFound, $kern5Path]; $Failed]
]
そして、ここにいくつかのテスト式があります:
kernel5Evaluate[Unevaluated[2 + 2]]
kernel5Evaluate[$Version]
kernel5Evaluate[Quit[]]
kernel5Evaluate[Print["some string"];]
kernel5Evaluate[Sin[1,]]
kernel5Evaluate[1/0]
kernel5Evaluate[{Plot[Sin[x], {x, 0, Pi}],
Plot[Sin[x], {x, -Pi, Pi}]}] //
DeleteCases[#, HoldPattern[DefaultFont :> $DefaultFont], Infinity] &
kernel5Evaluate[Plot3D[Sin[x y], {x, 0, Pi}, {y, 0, Pi}]];
ListPlot3D[First@%, Mesh -> Full, DataRange -> MeshRange /. Last[%]]
s = kernel5Evaluate[
NDSolve[{y'[x] == y[x] Cos[x + y[x]], y[0] == 1}, y, {x, 0, 30}]]
% // InputForm // Short
kernel5Evaluate[ContourPlot[Sin[x y], {x, -5, 5}, {y, -5, 5}]];
ListContourPlot[First@%, DataRange -> MeshRange /. Last[%],
Contours -> 10,
Method -> {"Refinement" -> {"CellDecomposition" -> "Quad"}}]