feat: add pretty print trait

Author: Chronostasys

planglib/std/stdbuiltin.pi

@@ -6,6 +6,7 @@ fn print_i64(i:i64) void;
 fn print_i128(i:i128) void;
 fn print_u64(i:u64) void;
 fn print_u128(i:u128) void;
+fn print_hex(i:i64) void;
 
 
 pub fn print_any<T>(t:T) void {
@@ -30,7 +31,7 @@ pub fn print_any<T>(t:T) void {
     if is_ptr<T>() {
         let result = unsafe_cast<*u8>(&t);
         let i = gc::ptr_to_int(*result);
-        print_i64(i);
+        print_hex(i);
         print_s(" )");
         return;
     }
@@ -100,12 +101,22 @@ pub fn print_any<T>(t:T) void {
         print_s(" )");
         return;
     }
-    forfields(t, {
+    let re = forfields(t, {
         print_s(_field_name);
         print_s(": ");
         print_any(_field);
         print_s(" ");
     });
+    if !re {// is trait
+        let result = unsafe_cast<i64>(&t);
+        // let hash = *result;
+        let i_ptr = gc::ptr_to_int(unsafe_cast<u8>(result)) + 8;
+        let v_ptr = gc::int_to_ptr(i_ptr);
+        let v = unsafe_cast<i64>(v_ptr);
+        let i = *v;
+        print_hex(i);
+        print_s(" ");
+    }
     print_s(")");
     return;
 }

test/main.pi

@@ -2,7 +2,7 @@ use project1::test::ifel;
 use project1::test::generic;
 use project1::test::st;
 use project1::test::method;
-use project1::test::constant;
+use project1::test::global;
 use project1::test::traits;
 use project1::test::simple;
 use project1::test::flow;
@@ -37,7 +37,7 @@ pub fn main() i64 {
     generic::test_generic();
     method::test_impl();
     test_struct();
-    constant::test_const();
+    global::test_global();
     traits::test_trait();
     simple::test_simple();
     flow::test_flow();

test/test/constant.pi renamed to test/test/global.pi

@@ -18,7 +18,7 @@ pub fn change_global() void {
     return;
 }
 
-pub fn test_const() void {
+pub fn test_global() void {
     panic::assert(*a == 100);
     change_global();
     panic::assert(b.a == 100);

vm/src/lib.rs

@@ -76,6 +76,11 @@ fn print_u128(i: u128) {
     print!("{}", i);
 }
 
+#[is_runtime]
+fn print_hex(i: i64) {
+    print!("0x{:X}", i);
+}
+
 #[is_runtime]
 fn utf8_count(ptr: *mut u8, byte_len: i64) -> i64 {
     let s = unsafe { std::slice::from_raw_parts(ptr, byte_len as usize) };