add `getchar` to `py_Callbacks`

include/pocketpy/pocketpy.h

@@ -40,6 +40,8 @@ typedef struct py_Callbacks {
     char* (*importfile)(const char*);
     /// Used by `print` to output a string.
     void (*print)(const char*);
+    /// Used by `input` to get a character.
+    int (*getchar)();
 } py_Callbacks;
 
 #define PY_RAISE

src/common/sstream.c

@@ -244,45 +244,3 @@ void pk_sprintf(c11_sbuf* ss, const char* fmt, ...) {
     pk_vsprintf(ss, fmt, args);
     va_end(args);
 }
-
-int py_replinput(char* buf, int max_size) {
-    buf[0] = '\0';  // reset first char because we check '@' at the beginning
-
-    int size = 0;
-    bool multiline = false;
-    printf(">>> ");
-
-    while(true) {
-        int c = getchar();
-        if(c == EOF) return -1;
-
-        if(c == '\n') {
-            char last = '\0';
-            if(size > 0) last = buf[size - 1];
-            if(multiline) {
-                if(last == '\n') {
-                    break;  // 2 consecutive newlines to end multiline input
-                } else {
-                    printf("... ");
-                }
-            } else {
-                if(last == ':' || last == '(' || last == '[' || last == '{' || buf[0] == '@') {
-                    printf("... ");
-                    multiline = true;
-                } else {
-                    break;
-                }
-            }
-        }
-
-        if(size == max_size - 1) {
-            buf[size] = '\0';
-            return size;
-        }
-
-        buf[size++] = c;
-    }
-
-    buf[size] = '\0';
-    return size;
-}

src/interpreter/vm.c

@@ -66,6 +66,7 @@ void VM__ctor(VM* self) {
 
     self->callbacks.importfile = pk_default_importfile;
     self->callbacks.print = pk_default_print;
+    self->callbacks.getchar = getchar;
 
     self->last_retval = *py_NIL();
     self->curr_exception = *py_NIL();
@@ -748,3 +749,45 @@ bool pk_wrapper__NotImplementedError(int argc, py_Ref argv) {
 }
 
 py_TypeInfo* pk__type_info(py_Type type) { return TypeList__get(&pk_current_vm->types, type); }
+
+int py_replinput(char* buf, int max_size) {
+    buf[0] = '\0';  // reset first char because we check '@' at the beginning
+
+    int size = 0;
+    bool multiline = false;
+    printf(">>> ");
+
+    while(true) {
+        int c = pk_current_vm->callbacks.getchar();
+        if(c == EOF) return -1;
+
+        if(c == '\n') {
+            char last = '\0';
+            if(size > 0) last = buf[size - 1];
+            if(multiline) {
+                if(last == '\n') {
+                    break;  // 2 consecutive newlines to end multiline input
+                } else {
+                    printf("... ");
+                }
+            } else {
+                if(last == ':' || last == '(' || last == '[' || last == '{' || buf[0] == '@') {
+                    printf("... ");
+                    multiline = true;
+                } else {
+                    break;
+                }
+            }
+        }
+
+        if(size == max_size - 1) {
+            buf[size] = '\0';
+            return size;
+        }
+
+        buf[size++] = c;
+    }
+
+    buf[size] = '\0';
+    return size;
+}

src/public/modules.c

@@ -1,4 +1,5 @@
 #include "pocketpy/common/str.h"
+#include "pocketpy/objects/base.h"
 #include "pocketpy/objects/codeobject.h"
 #include "pocketpy/pocketpy.h"
 #include "pocketpy/common/utils.h"
@@ -208,7 +209,7 @@ static bool builtins_input(int argc, py_Ref argv) {
     c11_sbuf buf;
     c11_sbuf__ctor(&buf);
     while(true) {
-        int c = getchar();
+        int c = pk_current_vm->callbacks.getchar();
         if(c == '\n') break;
         if(c == EOF) break;
         c11_sbuf__write_char(&buf, c);