standalone: Update demos

- Add `output_str` for printing a string
- Add demo_test.py to test interop

nac3standalone/demo/demo.rs

@@ -1,3 +1,7 @@
+use std::io;
+use std::io::Write;
+use std::process::exit;
+
 mod cslice {
     // copied from https://github.com/dherman/cslice
     use std::marker::PhantomData;
@@ -55,6 +59,14 @@ pub extern "C" fn output_asciiart(x: i32) {
     }
 }
 
+#[no_mangle]
+pub extern "C" fn output_str(x: &cslice::CSlice<u8>) {
+    for e in x.as_ref().iter() {
+        print!("{}", char::from(*e));
+    }
+    println!();
+}
+
 #[no_mangle]
 pub extern "C" fn output_int32_list(x: &cslice::CSlice<i32>) {
     print!("[");
@@ -75,8 +87,14 @@ pub extern "C" fn __nac3_personality(_state: u32, _exception_object: u32, _conte
 }
 
 #[no_mangle]
-pub extern "C" fn __nac3_raise(_state: u32, _exception_object: u32, _context: u32) -> u32 {
-    unimplemented!();
+pub extern "C" fn __nac3_raise(state: u32, exception_object: u32, context: u32) -> u32 {
+    writeln!(io::stderr(),
+             "__nac3_raise(state: {:#010x}, exception_object: {:#010x}, context: {:#010x})",
+             state,
+             exception_object,
+             context
+    ).unwrap();
+    exit(101);
 }
 
 extern "C" {

nac3standalone/demo/interpret_demo.py

@@ -48,6 +48,12 @@ def patch(module):
         else:
             sys.stdout.write(" .,-:;i+hHM$*#@  "[x])
 
+    def output(x, newline: bool=True):
+        if newline:
+            print(x)
+        else:
+            print(x, end="")
+
     def extern(fun):
         name = fun.__name__
         if name == "output_asciiart":
@@ -58,9 +64,10 @@ def patch(module):
             "output_int32_list",
             "output_uint32",
             "output_uint64",
-            "output_float64"
+            "output_float64",
+            "output_str",
         }:
-            return print
+            return output
         else:
             raise NotImplementedError
 

nac3standalone/demo/src/demo_test.py

@@ -0,0 +1,60 @@
+@extern
+def output_int32(x: int32):
+	...
+
+@extern
+def output_int64(x: int64):
+	...
+
+@extern
+def output_uint32(x: uint32):
+	...
+
+@extern
+def output_uint64(x: uint64):
+	...
+
+@extern
+def output_int32_list(x: list[int32]):
+	...
+
+@extern
+def output_asciiart(x: int32):
+	...
+
+@extern
+def output_str(x: str):
+	...
+
+def test_output_int32():
+	output_int32(-128)
+
+def test_output_int64():
+	output_int64(int64(-256))
+
+def test_output_uint32():
+	output_uint32(uint32(128))
+
+def test_output_uint64():
+	output_uint64(uint64(256))
+
+def test_output_asciiart():
+	for i in range(17):
+		output_asciiart(i)
+	output_asciiart(0)
+
+def test_output_int32_list():
+	output_int32_list([0, 1, 3, 5, 10])
+
+def test_output_str_family():
+	output_str("hello world")
+
+def run() -> int32:
+	test_output_int32()
+	test_output_int64()
+	test_output_uint32()
+	test_output_uint64()
+	test_output_asciiart()
+	test_output_int32_list()
+	test_output_str_family()
+	return 0