frontend: assemble: add assembler test

frontend/cmd/assemble.c

@@ -6,12 +6,16 @@
 #include <errno.h>
 #include <ivy/file.h>
 #include <ivy/asm/lex.h>
+#include <ivy/asm/assembler.h>
 #include <stdio.h>
 
 enum {
 	ARG_SOURCE_FILE,
+	OPT_OUT_FILE,
+	ARG_OUT_FILE,
 };
 
+#if 0
 static int assemble_file(const char *path)
 {
 	FILE *fp = fopen(path, "r");
@@ -54,9 +58,11 @@ static int assemble_file(const char *path)
 	ivy_asm_lexer_destroy(lex);
 	return r;
 }
+#endif
 
 static int assemble(const b_command *cmd, const b_arglist *args, const b_array *_)
 {
+#if 0
 	b_arglist_iterator it;
 	b_arglist_foreach_filtered(&it, args, B_COMMAND_INVALID_ID, ARG_SOURCE_FILE)
 	{
@@ -71,6 +77,40 @@ static int assemble(const b_command *cmd, const b_arglist *args, const b_array *
 			return r;
 		}
 	}
+#endif
+
+	const char *path = NULL;
+	b_arglist_get_string(args, OPT_OUT_FILE, ARG_OUT_FILE, 0, &path);
+
+	if (!path) {
+		printf("no output path specified.\n");
+		return -1;
+	}
+
+	FILE *out = fopen(path, "wb");
+	struct ivy_assembler *as;
+	enum ivy_status status = ivy_assembler_create(out, &as);
+
+	if (status != IVY_OK) {
+		b_err("failed to initialise assembler");
+		b_i("reason: ", ivy_status_to_string(status));
+		fclose(out);
+		return -1;
+	}
+
+	ivy_assembler_attrib_table attrib = {
+		[IVY_ASM_ATTRIB_IDENT] = 32,
+	};
+
+	ivy_assembler_begin_scope(as, IVY_ASM_SCOPE_CLASS, attrib);
+	ivy_assembler_end_scope(as);
+
+	attrib[IVY_ASM_ATTRIB_IDENT] = 64;
+	ivy_assembler_begin_scope(as, IVY_ASM_SCOPE_CLASS, attrib);
+	ivy_assembler_end_scope(as);
+
+	ivy_assembler_finish(as);
+	fclose(out);
 
 	return 0;
 }
@@ -91,5 +131,16 @@ B_COMMAND(CMD_ASSEMBLE, CMD_ROOT)
 		B_ARG_NR_VALUES(B_ARG_1_OR_MORE_VALUES);
 	}
 
+	B_COMMAND_OPTION(OPT_OUT_FILE)
+	{
+		B_OPTION_SHORT_NAME('o');
+		B_OPTION_LONG_NAME("out");
+		B_OPTION_DESC("the path to write the output binary file to.");
+		B_OPTION_ARG(ARG_OUT_FILE) {
+			B_ARG_NAME("path");
+			B_ARG_NR_VALUES(1);
+		}
+	}
+
 	B_COMMAND_HELP_OPTION();
 }