ser_bigint.diff

diff --git a/src/6model/reprs/P6bigint.c b/src/6model/reprs/P6bigint.c
index 5775052..d7cc636 100644
--- a/src/6model/reprs/P6bigint.c
+++ b/src/6model/reprs/P6bigint.c
@@ -99,6 +99,32 @@ static void compose(MVMThreadContext *tc, MVMSTable *st, MVMObject *info) {
     /* Nothing to do for this REPR. */
 }
 
+static void deserialize(MVMThreadContext *tc, MVMSTable *st, MVMObject *root, void *data, MVMSerializationReader *reader) {
+    int size = reader->read_int(tc, reader);
+    
+    //~ assert_can_read(tc, reader, 8);
+    
+    mp_read_signed_bin(&((MVMP6bigintBody *)data)->i, *(reader->cur_read_buffer) + *(reader->cur_read_offset), size);
+    
+    *(reader->cur_read_offset) += size;
+    
+}
+
+static void serialize(MVMThreadContext *tc, MVMSTable *st, void *data, MVMSerializationWriter *writer) {
+    mp_int *i = &((MVMP6bigintBody *)data)->i;
+    
+    /* This will return the number of bytes (octets) required to store the signed copy of the bigint. */
+    int size = mp_signed_bin_size(i);
+    writer->write_int(tc, writer, size);
+    
+    writer->expand_storage_if_needed(tc, writer, size);
+    
+    /* This will store the bigint into the buffer in big–endian format. */
+    mp_to_signed_bin(i, *(writer->cur_write_buffer) + *(writer->cur_write_offset));
+    
+    *(writer->cur_write_offset) += size;
+}
+
 /* Initializes the representation. */
 MVMREPROps * MVMP6bigint_initialize(MVMThreadContext *tc) {
     this_repr = malloc(sizeof(MVMREPROps));
diff --git a/src/6model/serialization.h b/src/6model/serialization.h
index 5afb843..283aa34 100644
--- a/src/6model/serialization.h
+++ b/src/6model/serialization.h
@@ -146,6 +146,7 @@ struct MVMSerializationWriter {
     void (*write_str) (MVMThreadContext *tc, MVMSerializationWriter *writer, MVMString *value);
     void (*write_ref) (MVMThreadContext *tc, MVMSerializationWriter *writer, MVMObject *value);
     void (*write_stable_ref) (MVMThreadContext *tc, MVMSerializationWriter *writer, MVMSTable *st);
+    void (*expand_storage_if_needed) (MVMThreadContext *tc, MVMSerializationWriter *writer, MVMint64 need);
 };
 
 /* Core serialize and deserialize functions. */