===================================================================
RCS file: /home/cvs/OpenXM/src/ox_math/Attic/serv2.c,v
retrieving revision 1.5
retrieving revision 1.13
diff -u -p -r1.5 -r1.13
--- OpenXM/src/ox_math/Attic/serv2.c	1999/11/04 19:33:17	1.5
+++ OpenXM/src/ox_math/Attic/serv2.c	2000/01/22 06:29:18	1.13
@@ -1,300 +1,105 @@
 /* -*- mode: C; coding: euc-japan -*- */
-/* $OpenXM: OpenXM/src/ox_math/serv2.c,v 1.4 1999/11/04 03:05:51 ohara Exp $ */
+/* $OpenXM: OpenXM/src/ox_math/serv2.c,v 1.12 2000/01/05 06:09:11 ohara Exp $ */
 
-/* Open Mathematica サーバ */
-/* ファイルディスクリプタ 3, 4 は open されていると仮定して動作する. */
+/* 
+   Copyright (C) Katsuyoshi OHARA, 2000.
+   Portions copyright 1999 Wolfram Research, Inc. 
 
-/* MathLink との通信部分 */
+   You must see OpenXM/Copyright/Copyright.generic.
+   The MathLink Library is licensed from Wolfram Research Inc..
+   See OpenXM/Copyright/Copyright.mathlink for detail.
+*/
 
+/* 
+   Remarks: 
+   file descripter 3 and 4 are already opened by the parent process.
+*/
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <gmp.h>
 #include <mathlink.h>
 #include "ox.h"
+#include "parse.h"
 #include "serv2.h"
 
-#define UNKNOWN_SM_COMMAND 50000
-#define MATH_ERROR         50001
+extern int flag_mlo_symbol;
 
-/* MLINK はポインタ型. */
-MLINK lp = NULL;
+/* MathLink independent */
+#define INIT_S_SIZE 2048
+#define EXT_S_SIZE  2048
 
+static int stack_size = 0;
+static int stack_pointer = 0;
+static cmo **stack = NULL;
 
-typedef cmo mlo;
-typedef cmo_string mlo_string;
-typedef cmo_zz mlo_zz;
-
-/* cmo_list の派生クラス*/
-typedef struct {
-	int tag;
-	int length;
-	cell head[1];
-	char *function;
-} mlo_function;
-
-
-mlo *receive_mlo_zz()
+int initialize_stack()
 {
-	char *s;
-	mlo  *m;
-
-	fprintf(stderr, "--debug: MLO == MLTKINT.\n");
-	MLGetString(lp, &s);
- 	fprintf(stderr, "--debug: zz = %s.\n", s);
-	m = (mlo *)new_cmo_zz_set_string(s);
-	MLDisownString(lp, s);
-	return m;
+    stack_pointer = 0;
+	stack_size = INIT_S_SIZE;
+	stack = malloc(stack_size*sizeof(cmo*));
 }
 
-mlo *receive_mlo_string()
+static int extend_stack()
 {
-	char *s;
-	mlo  *m;
-	fprintf(stderr, "--debug: MLO == MLTKSTR.\n");
-	MLGetString(lp, &s);
- 	fprintf(stderr, "--debug: string = \"%s\".\n", s);
-	m = (cmo *)new_cmo_string(s);
-	MLDisownString(lp, s);
-	return m;
+	int size2 = stack_size + EXT_S_SIZE;
+	cmo **stack2 = malloc(size2*sizeof(cmo*));
+	memcpy(stack2, stack, stack_size*sizeof(cmo *));
+	free(stack);
+	stack = stack2;
+	stack_size = size2;
 }
 
-cmo *receive_mlo_function()
-{
-	char *s;
-	cmo *m;
-    cmo  *ob;
-    int  i,n;
-
-	fprintf(stderr, "--debug: MLO == MLTKFUNC.\n");
-	MLGetFunction(lp, &s, &n);
-	fprintf(stderr, "--debug: Function = \"%s\", # of args = %d\n", s, n);
-	m = new_cmo_list();
-	append_cmo_list(m, new_cmo_string(s));
-
-	for (i=0; i<n; i++) {
-		fprintf(stderr, "--debug: arg[%d]\n", i);
-		fflush(stderr);
-		ob = receive_mlo();
-		append_cmo_list(m, ob);
-	}
-
-	MLDisownString(lp, s);
-	return m;
-}
-
-cmo *receive_mlo_symbol()
-{
-	cmo *ob;
-	char *s;
-
-	fprintf(stderr, "--debug: MLO == MLTKSYM.\n");
-	MLGetSymbol(lp, &s);
-	fprintf(stderr, "--debug: Symbol \"%s\".\n", s);
-
-	ob = new_cmo_indeterminate(new_cmo_string(s)); 
-
-	MLDisownString(lp, s);
-	return ob;
-}
-
-
-/* Mathematica を起動する. */
-int MATH_init()
-{
-    int argc = 2;
-    char *argv[] = {"-linkname", "math -mathlink"};
-
-    if(MLInitialize(NULL) == NULL 
-	   || (lp = MLOpen(argc, argv)) == NULL) {
-		fprintf(stderr, "Mathematica Kernel not found.\n");
-		exit(1);
-    }
-	return 0;
-}
-
-int MATH_exit()
-{
-    /* quit Mathematica then close the link */
-    MLPutFunction(lp, "Exit", 0);
-    MLClose(lp);
-}
-
-cmo *MATH_getObject2()
-{
-    /* skip any packets before the first ReturnPacket */
-    while (MLNextPacket(lp) != RETURNPKT) {
-        usleep(10);
-        MLNewPacket(lp);
-    }
-	return receive_mlo();
-}
-
-cmo *receive_mlo()
-{
-    char *s;
-	int type;
-
-    switch(type = MLGetNext(lp)) {
-    case MLTKINT:
-		return receive_mlo_zz();
-    case MLTKSTR:
-		return receive_mlo_string();
-    case MLTKREAL:
-		/* double はまだ... */
-        fprintf(stderr, "--debug: MLO == MLTKREAL.\n");
-        MLGetString(lp, &s);
-        return new_cmo_string(s);
-    case MLTKSYM:
-        return receive_mlo_symbol();
-    case MLTKFUNC:
-		return receive_mlo_function();
-    case MLTKERR:
-        fprintf(stderr, "--debug: MLO == MLTKERR.\n");
-        return gen_error_object(MATH_ERROR);
-    default:
-        fprintf(stderr, "--debug: MLO(%d) is unknown.\n", type);
-        MLGetString(lp, &s);
-		fprintf(stderr, "--debug: \"%s\"\n", s);
-        return new_cmo_string(s);
-    }
-}
-
-
-int send_mlo_int32(cmo *m)
-{
-	MLPutInteger(lp, ((cmo_int32 *)m)->i);
-}
-
-int send_mlo_string(cmo *m)
-{
-	char *s = ((cmo_string *)m)->s;
-	MLPutString(lp, s);
-	fprintf(stderr, "ox_math:: put %s.", s);
-}
-
-int send_mlo_zz(cmo *m)
-{
-	char *s;
-	MLPutFunction(lp, "ToExpression", 1);
-	s = convert_cmo_to_string(m);
-	MLPutString(lp, s);
-	fprintf(stderr, "put %s.", s);
-}
-
-int send_mlo_list(cmo *c)
-{
-	char *s;
-	cell *cp = ((cmo_list *)c)->head;
-	int len = length_cmo_list((cmo_list *)c);
-
-	fprintf(stderr, "ox_math:: put List with %d args.\n", len);
-	MLPutFunction(lp, "List", len);
-	while(cp->next != NULL) {
-		send_mlo(cp->cmo);
-		cp = cp->next;
-	}
-}
-
-int MATH_sendObject(cmo *m)
-{
-	send_mlo(m);
-	MLEndPacket(lp);
-}
-
-int send_mlo(cmo *m)
-{
-    char *s;
-    switch(m->tag) {
-    case CMO_INT32:
-		send_mlo_int32(m);
-        break;
-    case CMO_STRING:
-		send_mlo_string(m);
-        break;
-	case CMO_LIST:
-		send_mlo_list(m);
-        break;
-    default:
-        MLPutFunction(lp, "ToExpression", 1);
-        s = convert_cmo_to_string(m);
-        MLPutString(lp, s);
-        fprintf(stderr, "put %s.", s);
-        break;
-    }
-}
-
-int MATH_evaluateStringByLocalParser(char *str)
-{
-    MLPutFunction(lp, "ToExpression", 1);
-    MLPutString(lp, str);
-    MLEndPacket(lp);
-}
-
-int MATH_executeFunction(char *function, int argc, cmo *argv[])
-{
-    int i;
-    MLPutFunction(lp, function, argc);
-    for (i=0; i<argc; i++) {
-        send_mlo(argv[i]);
-    }
-    MLEndPacket(lp);
-}
-
-/* MathLink 非依存部分 */
-
-#define SIZE_OPERAND_STACK   2048
-
-static cmo* Operand_Stack[SIZE_OPERAND_STACK];
-static int Stack_Pointer = 0;
-
-int initialize_stack()
-{
-    Stack_Pointer = 0;
-} 
-
 int push(cmo* m)
 {
 #if DEBUG
+    symbol *symp;
+
     if (m->tag == CMO_STRING) {
-        fprintf(stderr, "ox_math:: a cmo_string(%s) was pushed.\n", ((cmo_string *)m)->s);
+        fprintf(stderr, "ox_math:: a CMO_STRING(%s) was pushed.\n", ((cmo_string *)m)->s);
     }else {
-		fprintf(stderr, "ox_math:: a cmo(%d) was pushed.\n", m->tag);
-	}
+        symp = lookup_by_tag(m->tag);
+        fprintf(stderr, "ox_math:: a %s was pushed.\n", symp->key);
+    }
 #endif
-    Operand_Stack[Stack_Pointer] = m;
-    Stack_Pointer++;
-    if (Stack_Pointer >= SIZE_OPERAND_STACK) {
-        fprintf(stderr, "stack over flow.\n");
-        exit(1); /* 手抜き */
+    stack[stack_pointer] = m;
+    stack_pointer++;
+    if (stack_pointer >= stack_size) {
+		extend_stack();
     }
 }
 
-/* スタックが空のときは, (CMO_NULL) をかえす. */
+/* if the stack is empty, then pop() returns (CMO_NULL). */
 cmo* pop()
 {
-    if (Stack_Pointer > 0) {
-        Stack_Pointer--;
-        return Operand_Stack[Stack_Pointer];
+    if (stack_pointer > 0) {
+        stack_pointer--;
+        return stack[stack_pointer];
     }
     return new_cmo_null();
 }
 
 void pops(int n)
 {
-    Stack_Pointer -= n;
-    if (Stack_Pointer < 0) {
-        Stack_Pointer = 0;
+    stack_pointer -= n;
+    if (stack_pointer < 0) {
+        stack_pointer = 0;
     }
 }
 
-/* sm_XXX 関数群は、エラーのときは 0 以外の値を返し、呼び出し元で
-   エラーオブジェクトをセットする */
+/* 
+   if error occurs, then a sm_*() function returns non-zero and 
+   an error obect is set by a function which calls sm_*().
+*/
 int sm_popCMO(int fd_write)
 {
     cmo* m = pop();
+#ifdef DEBUG
+    symbol *symp = lookup_by_tag(m->tag);
+    fprintf(stderr, "ox_math:: opecode = SM_popCMO. (%s)\n", symp->key);
+#endif
 
-    fprintf(stderr, "ox_math:: opecode = SM_popCMO. (tag = %d)\n", m->tag);
     if (m != NULL) {
         send_ox_cmo(fd_write, m);
         return 0;
@@ -309,41 +114,75 @@ int sm_pops(int fd_write)
         pops(((cmo_int32 *)m)->i);
         return 0;
     }
-    return UNKNOWN_SM_COMMAND;
+    return ERROR_ID_UNKNOWN_SM;
 }
 
-/* MathLink 依存部分 */
+/* MathLink dependent */
 int sm_popString(int fd_write)
 {
-    char* s;
-    cmo*  m;
+    char *s;
+    cmo *err;
+    cmo *m;
 
 #ifdef DEBUG
     fprintf(stderr, "ox_math:: opecode = SM_popString.\n");
 #endif
 
-    if ((m = pop()) != NULL && (s = convert_cmo_to_string(m)) != NULL) {
+    m = pop();
+    if (m->tag == CMO_STRING) {
+        send_ox_cmo(fd_write, m);
+    }else if ((s = new_string_set_cmo(m)) != NULL) {
         send_ox_cmo(fd_write, (cmo *)new_cmo_string(s));
-        return 0;
+    }else {
+        err = make_error_object(SM_popString, m);
+        send_ox_cmo(fd_write, err);
     }
-    return SM_popString;
+    return 0;
 }
 
-/* この関数はサーバに依存する. */
+int local_execute(char *s)
+{
+    if(*s == 'i') {
+        switch(s[1]) {
+        case '+':
+            flag_mlo_symbol = FLAG_MLTKSYM_IS_STRING;
+            break;
+        case '-':
+        case '=':
+        default:
+            flag_mlo_symbol = FLAG_MLTKSYM_IS_INDETERMINATE;
+        }
+    }
+    return 0;
+}
+
+/* The following function is depend on an implementation of a server. */
 int sm_executeStringByLocalParser(int fd_write)
 {
-    cmo* m = NULL;
+    symbol *symp;
+    cmo* m = pop();
+    char *s = NULL;
 #ifdef DEBUG
     fprintf(stderr, "ox_math:: opecode = SM_executeStringByLocalParser.\n");
 #endif
-    if ((m = pop()) != NULL && m->tag == CMO_STRING) {
-        /* for mathematica */
-        /* mathematica に文字列を送って評価させる */
-        MATH_evaluateStringByLocalParser(((cmo_string *)m)->s);
-        push(MATH_getObject2());
+
+    if (m->tag == CMO_STRING
+        && strlen(s = ((cmo_string *)m)->s) != 0) {
+        if (s[0] == ':') {
+            local_execute(++s);
+        }else {
+            /* for mathematica */
+            /* Sending the string `s' to mathematica for its evaluation. */
+            ml_evaluateStringByLocalParser(s);
+			ml_select();
+            push(receive_mlo());
+        }
         return 0;
     }
-    fprintf(stderr, "cannot execute: top of stack is not string!(%p, %d)\n", m, m->tag);
+#ifdef DEBUG
+    symp = lookup_by_tag(m->tag);
+    fprintf(stderr, "ox_math:: error. the top of stack is %s.\n", symp->key);
+#endif
     return SM_executeStringByLocalParser;
 }
 
@@ -362,26 +201,24 @@ int sm_executeFunction(int fd_write)
     if ((m = pop()) == NULL || m->tag != CMO_INT32) {
         return SM_executeFunction;
     }
+
     argc = ((cmo_int32 *)m)->i;
-    argv = malloc(sizeof(cmo *)*argc);
+    argv = malloc(argc*sizeof(cmo *));
     for (i=0; i<argc; i++) {
-        if ((argv[i] = pop()) == NULL) {
-            return SM_executeFunction;
-        }
+        argv[i] = pop();
     }
-    MATH_executeFunction(func, argc, argv);
-    push(MATH_getObject2());
+    ml_executeFunction(func, argc, argv);
+	ml_select();
+    push(receive_mlo());
     return 0;
 }
 
-/* 平成11年10月13日 */
-#define VERSION 0x11102700
-#define ID_STRING  "ox_math server 1999/10/28 17:29:25"
+#define VERSION 0x11121400
+#define ID_STRING  "ox_math server 1999/12/14 15:25:00"
 
 int sm_mathcap(int fd_write)
 {
-    cmo* c = make_mathcap_object(VERSION, ID_STRING);
-    push(c);
+    push(make_mathcap_object(VERSION, ID_STRING));
     return 0;
 }
 
@@ -393,6 +230,10 @@ int receive_sm_command(int fd_read)
 int execute_sm_command(int fd_write, int code)
 {
     int err = 0;
+#ifdef DEBUG    
+    symbol *sp = lookup_by_tag(code);
+    fprintf(stderr, "ox_math:: %s received.\n", sp->key);
+#endif
 
     switch(code) {
     case SM_popCMO:
@@ -408,20 +249,24 @@ int execute_sm_command(int fd_write, int code)
         err = sm_pops(fd_write);
         break;
     case SM_executeStringByLocalParser:
+    case SM_executeStringByLocalParserInBatchMode:
         err = sm_executeStringByLocalParser(fd_write);
         break;
     case SM_executeFunction:
         err = sm_executeFunction(fd_write);
         break;
+    case SM_shutdown:
+        shutdown();
+        break;
     case SM_setMathCap:
-        pop();  /* 無視する */
+        pop();  /* ignore */
         break;
     default:
         fprintf(stderr, "unknown command: %d.\n", code);
-        err = UNKNOWN_SM_COMMAND;
+        err = ERROR_ID_UNKNOWN_SM;
     }
 
     if (err != 0) {
-        push((cmo *)gen_error_object(err));
+        push((cmo *)make_error_object(err, new_cmo_null()));
     }
 }