{"id":1649,"date":"2013-01-30T08:55:36","date_gmt":"2013-01-29T23:55:36","guid":{"rendered":"http:\/\/www.techscore.com\/blog\/?p=1649"},"modified":"2018-11-14T16:33:56","modified_gmt":"2018-11-14T07:33:56","slug":"c%e8%a8%80%e8%aa%9e%e3%81%8b%e3%82%89gauche%e3%82%92%e4%bd%bf%e3%81%8a%e3%81%86%ef%bc%81-8-scm_loadfromport%e3%81%a7load%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www.techscore.com\/blog\/2013\/01\/30\/c%e8%a8%80%e8%aa%9e%e3%81%8b%e3%82%89gauche%e3%82%92%e4%bd%bf%e3%81%8a%e3%81%86%ef%bc%81-8-scm_loadfromport%e3%81%a7load%e3%81%99%e3%82%8b\/","title":{"rendered":"C\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01 (8) Scm_LoadFromPort\u3067load\u3059\u308b"},"content":{"rendered":"

\u3053\u3093\u306b\u3061\u306f\u3001\u9234\u6728\u3067\u3059\u3002<\/p>\n

 <\/p>\n

\u300cC\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01\u300d\u30b7\u30ea\u30fc\u30ba\u3082 8 \u56de\u76ee\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n

\u524d\u56de\u306e\u300cC\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01 (7) \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u9053\u5177\u3092\u6e96\u5099\u3059\u308b<\/a>\u300d\u3067\u306f\u30c7\u30d0\u30c3\u30b0\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u3092\u8abf\u3079\u307e\u3057\u305f\u3002<\/p>\n

\u4eca\u56de\u306f Scm_LoadFromPort \u95a2\u6570\u3067\u6587\u5b57\u5217\u3068\u3057\u3066\u7528\u610f\u3057\u305f Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u3092 load \u3059\u308b\u65b9\u6cd5\u3092\u8abf\u3079\u307e\u3059\u3002<\/p>\n

 <\/p>\n

Scm_LoadFromPort \u95a2\u6570<\/h2>\n

Scm_LoadFromPort \u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u5165\u529b\u30dd\u30fc\u30c8\u304b\u3089 Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30ed\u30fc\u30c9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n

\u4eca\u56de\u306f\u30ea\u30c6\u30e9\u30eb\u3067\u7528\u610f\u3057\u305f\u6587\u5b57\u5217\u304b\u3089\u6587\u5b57\u5217\u30dd\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u3001\u305d\u3053\u304b\u3089 Scm_LoadFromPort \u3067\u30ed\u30fc\u30c9\u3057\u307e\u3059\u3002<\/p>\n

\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n

#include <stdio.h>\r\n#include <gauche.h>\r\n\r\n\/**\r\n * ScmEvalPacket \u3084 ScmLoadPacket \u306b\u542b\u307e\u308c\u308b\u4f8b\u5916\u60c5\u5831\u3092\u8868\u793a\u3057\u307e\u3059. \r\n *\/\r\n#define PRINT_EXCEPTION(packet) \\\r\n    printf(\"[%s] %s\\n\", \\\r\n           SCM_STRING_CONST_CSTRING(Scm_ConditionTypeName(packet.exception)), \\\r\n           SCM_STRING_CONST_CSTRING(Scm_ConditionMessage(packet.exception)));\r\n\r\nvoid load_from_port()\r\n{\r\n    ScmObj source = SCM_MAKE_STR(\r\n        \"(define sum (lambda (xs)\"\r\n        \"    (apply + xs)))\"\r\n        \"(define average (lambda (xs)\"\r\n        \"    (\/ (sum xs) (length xs))))\"\r\n    );  \r\n    ScmObj port = Scm_MakeInputStringPort(SCM_STRING(source), TRUE);\r\n    ScmLoadPacket load_packet;\r\n\r\n    if(Scm_LoadFromPort(SCM_PORT(port), 0, &load_packet) < 0) {\r\n        PRINT_EXCEPTION(load_packet);\r\n        return;\r\n    }   \r\n}\r\n\r\nvoid apply_something()\r\n{\r\n    ScmObj procedure;\r\n    ScmObj arguments;\r\n    ScmEvalPacket eval_packet;\r\n\r\n    \/* (apply sum '((1 2 3))) *\/\r\n    procedure = Scm_GlobalVariableRef(Scm_UserModule(), SCM_SYMBOL(SCM_INTERN(\"sum\")), SCM_BINDING_STAY_IN_MODULE);\r\n    arguments = SCM_LIST1(SCM_LIST3(SCM_MAKE_INT(1), SCM_MAKE_INT(2), SCM_MAKE_INT(3)));\r\n    if(Scm_Apply(procedure, arguments, &eval_packet) < 0) {\r\n        PRINT_EXCEPTION(eval_packet);\r\n        return;\r\n    }   \r\n    Scm_Printf(SCM_CUROUT, \"%S\\n\", eval_packet.results[0]);\r\n\r\n    \/* (apply average '((1 2 3))) *\/\r\n    procedure = Scm_GlobalVariableRef(Scm_UserModule(), SCM_SYMBOL(SCM_INTERN(\"average\")), SCM_BINDING_STAY_IN_MODULE);\r\n    arguments = SCM_LIST1(SCM_LIST3(SCM_MAKE_INT(1), SCM_MAKE_INT(2), SCM_MAKE_INT(3)));\r\n    if(Scm_Apply(procedure, arguments, &eval_packet) < 0) {\r\n        PRINT_EXCEPTION(eval_packet);\r\n        return;\r\n    }\r\n    Scm_Printf(SCM_CUROUT, \"%S\\n\", eval_packet.results[0]);\r\n}\r\n\r\nint main()\r\n{\r\n    GC_INIT();\r\n    Scm_Init(GAUCHE_SIGNATURE);\r\n\r\n    load_from_port();\r\n    apply_something();\r\n\r\n    return 0;\r\n}<\/pre>\n
\u3044\u304f\u3064\u304b\u306e\u95a2\u6570\u306b\u5206\u304b\u308c\u3066\u3044\u307e\u3059\u304c\u3001load_from_port \u95a2\u6570\u306e\u4e2d\u3067\u3001<\/p>\n
(define sum (lambda (xs)\r\n    (apply + xs)))\r\n\r\n(define average (lambda (xs)\r\n    (\/ (sum xs) (length xs))))<\/pre>\n
\u3068\u3044\u3046 Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30ed\u30fc\u30c9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u52d5\u4f5c\u78ba\u8a8d\u3068\u3057\u3066 apply_something \u95a2\u6570\u306e\u4e2d\u3067\u3001<\/p>\n
(apply sum '((1 2 3)))\r\n(apply average '((1 2 3)))<\/pre>\n
\u76f8\u5f53\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u307e\u305a\u306f\u5b9f\u884c\u7d50\u679c\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002\uff08\u203b\u300cC\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01 (1) \u30b3\u30f3\u30d1\u30a4\u30eb\u74b0\u5883\u3092\u6574\u3048\u308b<\/a>\u300d\u3067\u4f5c\u6210\u3057\u305f Makefile \u3092\u4f7f\u7528\u3057\u307e\u3059\uff09<\/p>\n
> make run\r\n6\r\n2<\/pre>\n
\u51fa\u529b\u7d50\u679c\u306e 1 \u884c\u76ee\u306f\u300c(apply sum '((1 2 3)))\u300d\u306e\u7d50\u679c\u3001\u3064\u307e\u308a 1, 2, 3 \u306e\u5408\u8a08\u3067\u3042\u308b 6 \u3067\u3059\u3002<\/p>\n
2 \u884c\u76ee\u306f\u300c(apply average '((1 2 3)))\u300d\u306e\u7d50\u679c\u3001\u3064\u307e\u308a 1, 2, 3 \u306e\u5e73\u5747\u3067\u3042\u308b 2 \u3067\u3059\u3002<\/p>\n
 <\/p>\n
load_from_port \u95a2\u6570<\/h2>\n
load_from_port \u95a2\u6570\u3092\u8a73\u3057\u304f\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
void load_from_port()\r\n{\r\n    ScmObj source = SCM_MAKE_STR(\r\n        \"(define sum (lambda (xs)\"\r\n        \"    (apply + xs)))\"\r\n        \"(define average (lambda (xs)\"\r\n        \"    (\/ (sum xs) (length xs))))\"\r\n    );  \r\n    ScmObj port = Scm_MakeInputStringPort(SCM_STRING(source), TRUE);\r\n    ScmLoadPacket load_packet;\r\n\r\n    if(Scm_LoadFromPort(SCM_PORT(port), 0, &load_packet) < 0) {\r\n        PRINT_EXCEPTION(load_packet);\r\n        return;\r\n    }   \r\n}<\/pre>\n
\u307e\u305a\u3001source \u3068\u3044\u3046\u5909\u6570\u306b\u6587\u5b57\u5217\u3067\u6e96\u5099\u3057\u305f Scheme \u30b3\u30fc\u30c9\u3092\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u4f59\u8ac7\u3067\u3059\u304c\u3001C \u8a00\u8a9e\u3067\u306f\u9023\u7d9a\u3059\u308b\u6587\u5b57\u5217\u30ea\u30c6\u30e9\u30eb\u306f\u3001\u3072\u3068\u3064\u306e\u6587\u5b57\u5217\u30ea\u30c6\u30e9\u30eb\u306b\u9023\u7d50\u3055\u308c\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u300c\"a\" \"b\" \"c\"\u300d\u306f\u300c\"abc\"\u300d\u3068\u89e3\u91c8\u3055\u308c\u307e\u3059\u3002<\/p>\n
\u6b21\u306b Scm_MakeInputStringPort \u95a2\u6570\u3092\u7528\u3044\u3066\u3001\u6587\u5b57\u5217\u304b\u3089\u5165\u529b\u30dd\u30fc\u30c8\u3092\u4f5c\u6210\u3057\u3001\u5909\u6570 port \u306b\u4ee3\u5165\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u305d\u3057\u3066\u3001Scm_LoadFrmPort \u3067\u4f5c\u6210\u3057\u305f\u5165\u529b\u30dd\u30fc\u30c8\u304b\u3089 Scheme \u30b3\u30fc\u30c9\u3092\u30ed\u30fc\u30c9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3053\u308c\u3067\u4eca\u56de\u3084\u308d\u3046\u3068\u3057\u3066\u3044\u305f Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u306e\u30ed\u30fc\u30c9\u306f\u5b8c\u4e86\u3067\u3059\u3002<\/p>\n
 <\/p>\n
apply_something \u95a2\u6570<\/h2>\n
apply_something \u95a2\u6570\u306f\u52d5\u4f5c\u78ba\u8a8d\u306e\u305f\u3081\u306b\u4f5c\u6210\u3057\u305f\u95a2\u6570\u3067\u3059\u3002<\/p>\n
void apply_something()\r\n{\r\n    ScmObj procedure;\r\n    ScmObj arguments;\r\n    ScmEvalPacket eval_packet;\r\n\r\n    \/* (apply sum '((1 2 3))) *\/\r\n    procedure = Scm_GlobalVariableRef(Scm_UserModule(), SCM_SYMBOL(SCM_INTERN(\"sum\")), SCM_BINDING_STAY_IN_MODULE);\r\n    arguments = SCM_LIST1(SCM_LIST3(SCM_MAKE_INT(1), SCM_MAKE_INT(2), SCM_MAKE_INT(3)));\r\n    if(Scm_Apply(procedure, arguments, &eval_packet) < 0) {\r\n        PRINT_EXCEPTION(eval_packet);\r\n        return;\r\n    }\r\n    Scm_Printf(SCM_CUROUT, \"%S\\n\", eval_packet.results[0]);\r\n\r\n    \/* (apply average '((1 2 3))) *\/\r\n    procedure = Scm_GlobalVariableRef(Scm_UserModule(), SCM_SYMBOL(SCM_INTERN(\"average\")), SCM_BINDING_STAY_IN_MODULE);\r\n    arguments = SCM_LIST1(SCM_LIST3(SCM_MAKE_INT(1), SCM_MAKE_INT(2), SCM_MAKE_INT(3)));\r\n    if(Scm_Apply(procedure, arguments, &eval_packet) < 0) {\r\n        PRINT_EXCEPTION(eval_packet);\r\n        return;\r\n    }\r\n    Scm_Printf(SCM_CUROUT, \"%S\\n\", eval_packet.results[0]);\r\n}<\/pre>\n
load_from_port \u3067\u30ed\u30fc\u30c9\u3057\u305f Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u542b\u307e\u308c\u3066\u3044\u308b\u624b\u7d9a\u304d\u3092 Scm_Apply \u3067\u547c\u3073\u51fa\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30b3\u30e1\u30f3\u30c8\u306b\u3082\u66f8\u3044\u3066\u3044\u307e\u3059\u304c\u3001\u300c(apply sum '((1 2 3)))\u300d\u3068\u300c(apply average '((1 2 3)))\u300d\u76f8\u5f53\u306e\u51e6\u7406\u3092\u5b9f\u884c\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u307e\u3068\u3081<\/h2>\n
\u9577\u3044\u9053\u306e\u308a\u3067\u3057\u305f\u304c\u3001\u3072\u3068\u307e\u305a Scheme \u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u30ed\u30fc\u30c9\u3057\u3066 C \u8a00\u8a9e\u304b\u3089\u547c\u3073\u51fa\u3059\uff08\u5024\u306e\u53d7\u3051\u6e21\u3057\u3082\u884c\u3046\uff09\u3001\u3068\u3044\u3046\u3053\u3068\u304c\u9054\u6210\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n
 <\/p>\n","protected":false},"excerpt":{"rendered":"
\u3053\u3093\u306b\u3061\u306f\u3001\u9234\u6728\u3067\u3059\u3002<\/p>\n
 <\/p>\n
\u300cC\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01\u300d\u30b7\u30ea\u30fc\u30ba\u3082 8 \u56de\u76ee\u3068\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n
\u524d\u56de\u306e\u300cC\u8a00\u8a9e\u304b\u3089Gauche\u3092\u4f7f\u304a\u3046\uff01 (7) \u30c7\u30d0\u30c3\u30b0\u7528\u306e\u9053\u5177\u3092\u6e96\u5099\u3059\u308b\u300d\u3067\u306f\u30c7\u30d0\u30c3\u30b0\u51fa\u529b\u3059\u308b\u65b9\u6cd5\u3092\u8abf\u3079\u307e\u3057\u305f\u3002
\u7d9a\u304d\u3092\u8aad\u3080...<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[85,18],"tags":[79,78,77],"_links":{"self":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/1649"}],"collection":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/comments?post=1649"}],"version-history":[{"count":1,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/1649\/revisions"}],"predecessor-version":[{"id":17966,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/posts\/1649\/revisions\/17966"}],"wp:attachment":[{"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/media?parent=1649"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/categories?post=1649"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techscore.com\/blog\/wp-json\/wp\/v2\/tags?post=1649"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}