From a1c033eea769012d08a094a4328017a691199157 Mon Sep 17 00:00:00 2001
From: sasagawa888 <ken-s@tkcnf.or.jp>
Date: Fri, 3 Jan 2025 16:40:56 +0900
Subject: [PATCH] thread safe readparse

---
 builtin.c   | 6 +++---
 extension.c | 2 +-
 main.c      | 6 +++---
 npl.h       | 2 +-
 parser.c    | 6 +++---
 5 files changed, 11 insertions(+), 11 deletions(-)

diff --git a/builtin.c b/builtin.c
index ff2ed46..341287d 100644
--- a/builtin.c
+++ b/builtin.c
@@ -1038,7 +1038,7 @@ int b_read(int arglist, int rest, int th)
 	    input_stream = GET_CAR(arg1);
 	repl_flag = 0;
 
-	temp = variable_to_call(readparse());
+	temp = variable_to_call(readparse(th));
 	res = unify(arg2, temp, th);
 	input_stream = save1;
 	repl_flag = save2;
@@ -3329,7 +3329,7 @@ int b_string_term(int arglist, int rest, int th)
 	    bridge[l + 1] = 0;
 	    read_string_term(0);	//initilize 
 	    bridge_flag = 1;
-	    res = readparse();
+	    res = readparse(th);
 	    bridge_flag = 0;
 	    if (unify(arg2, res, th) == YES)
 		return (prove_all(rest, sp[th], th));
@@ -3758,7 +3758,7 @@ int b_break(int arglist, int rest, int th)
 	    while (1) {
 		printf("?= ");
 		fflush(stdout);
-		query_break(variable_to_call(readparse()), th);
+		query_break(variable_to_call(readparse(th)), th);
 		fflush(stdout);
 	    }
 	} else if (ret == 1) {
diff --git a/extension.c b/extension.c
index a607bda..dc26a12 100644
--- a/extension.c
+++ b/extension.c
@@ -1197,7 +1197,7 @@ int str_to_pred(int x)
     memset(bridge, '\0', sizeof(bridge));
     strcpy(bridge, GET_NAME(x));
     read_string_term(0);
-    res = variable_to_call(readparse());
+    res = variable_to_call(readparse(0));
     memset(bridge, 0, sizeof(bridge));
     bridge_flag = 0;
     return (res);
diff --git a/main.c b/main.c
index da56289..11daaa9 100644
--- a/main.c
+++ b/main.c
@@ -319,7 +319,7 @@ int main(int argc, char *argv[])
 		init_repl();
 		printf("?- ");
 		fflush(stdout);
-		input = variable_to_call(readparse());
+		input = variable_to_call(readparse(0));
 		if (!repl_flag)
 		    clear_input_buffer();
 		query(input, 0);
@@ -1018,7 +1018,7 @@ void debugger(int goal, int bindings, int rest)
 
 	printf("- ");
 	fflush(stdout);
-	read = variable_to_call(readparse());
+	read = variable_to_call(readparse(0));
 	if (read == FEND)
 	    goto break_exit;
 	query(read, 0);
@@ -1097,7 +1097,7 @@ void debugger(int goal, int bindings, int rest)
     case '@':
 	printf("?- ");
 	fflush(stdout);
-	read = variable_to_call(readparse());
+	read = variable_to_call(readparse(0));
 	query(read, 0);
 	fflush(stdout);
 	break;
diff --git a/npl.h b/npl.h
index c7240f9..6260569 100644
--- a/npl.h
+++ b/npl.h
@@ -1206,7 +1206,7 @@ int prove(int goal, int bindings, int rest, int th);
 int prove_all(int goals, int bindings, int th);
 int quoted_option_p(int x);
 int quotient(int x, int y, int th);
-int readparse(void);
+int readparse(int th);
 int readitem(int th);
 int readitem1(int th);
 int readcurl(int th);
diff --git a/parser.c b/parser.c
index b29bd26..789da5e 100644
--- a/parser.c
+++ b/parser.c
@@ -5,14 +5,14 @@
 
 //#define CHECK   1 //for parser debug check
 
-int readparse(void)
+int readparse(int th)
 {
     int res;
 
     paren_nest = 0;
-    res = parser(NIL, NIL, NIL, NIL, 0, 0, 0);
+    res = parser(NIL, NIL, NIL, NIL, 0, 0, th);
     if (paren_nest != 0)
-	error(SYNTAX_ERR, "extra paren ", NIL,0);
+	error(SYNTAX_ERR, "extra paren ", NIL,th);
 
     return (res);
 }