Merge pull request #2 from jow-/rewrite

treewide: rewrite ucode interpreter

1 files changed, 63 insertions, 0 deletions

diff --git a/chunk.h b/chunk.h
new file mode 100644
index 0000000..a3eed0e
--- /dev/null
+++ b/chunk.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2020-2021 Jo-Philipp Wich <jo@mein.io>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __CHUNK_H_
+#define __CHUNK_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include "value.h"
+#include "util.h"
+
+
+typedef struct {
+	size_t from, to, target, slot;
+} uc_ehrange;
+
+typedef struct {
+	size_t from, to, slot, nameidx;
+} uc_varrange;
+
+uc_declare_vector(uc_ehranges, uc_ehrange);
+uc_declare_vector(uc_variables, uc_varrange);
+uc_declare_vector(uc_offsetinfo, uint8_t);
+
+typedef struct {
+	size_t count;
+	uint8_t *entries;
+	uc_value_list constants;
+	uc_ehranges ehranges;
+	struct {
+		uc_variables variables;
+		uc_value_list varnames;
+		uc_offsetinfo offsets;
+	} debuginfo;
+} uc_chunk;
+
+void uc_chunk_init(uc_chunk *chunk);
+void uc_chunk_free(uc_chunk *chunk);
+size_t uc_chunk_add(uc_chunk *chunk, uint8_t byte, size_t line);
+
+ssize_t uc_chunk_add_constant(uc_chunk *chunk, struct json_object *value);
+struct json_object *uc_chunk_get_constant(uc_chunk *chunk, size_t idx);
+void uc_chunk_pop(uc_chunk *chunk);
+
+size_t uc_chunk_debug_get_srcpos(uc_chunk *chunk, size_t off);
+void uc_chunk_debug_add_variable(uc_chunk *chunk, size_t from, size_t to, size_t slot, bool upval, json_object *name);
+json_object *uc_chunk_debug_get_variable(uc_chunk *chunk, size_t off, size_t slot, bool upval);
+
+#endif /* __CHUNK_H_ */