Move source files to src/

src/bytecode.h

@@ -0,0 +1,92 @@
+#ifndef BYTECODE_H
+#define BYTECODE_H
+#include <stdint.h>
+
+#include "jv.h"
+
+typedef enum {
+#define OP(name, imm, in, out) name,
+#include "opcode_list.h"
+#undef OP
+} opcode;
+
+enum {
+  NUM_OPCODES =
+#define OP(name, imm, in, out) +1
+#include "opcode_list.h"
+#undef OP
+};
+
+enum {
+  OP_HAS_CONSTANT = 2,
+  OP_HAS_VARIABLE = 4,
+  OP_HAS_BRANCH = 8,
+  OP_HAS_CFUNC = 32,
+  OP_HAS_UFUNC = 64,
+  OP_IS_CALL_PSEUDO = 128,
+  OP_HAS_BINDING = 1024,
+  // NOTE: Not actually part of any op -- a pseudo-op flag for special
+  //       handling of `break`.
+  OP_BIND_WILDCARD = 2048,
+};
+struct opcode_description {
+  opcode op;
+  const char* name;
+
+  int flags;
+
+  // length in 16-bit units
+  int length;
+
+  int stack_in, stack_out;
+};
+
+const struct opcode_description* opcode_describe(opcode op);
+
+
+#define MAX_CFUNCTION_ARGS 10
+typedef void (*cfunction_ptr)();
+struct cfunction {
+  cfunction_ptr fptr;
+  const char* name;
+  int nargs;
+};
+
+struct symbol_table {
+  struct cfunction* cfunctions;
+  int ncfunctions;
+  jv cfunc_names;
+};
+
+// The bytecode format matters in:
+//   execute.c  - interpreter
+//   compile.c  - compiler
+//   bytecode.c - disassembler
+
+#define ARG_NEWCLOSURE 0x1000
+
+struct bytecode {
+  uint16_t* code;
+  int codelen;
+
+  int nlocals;
+  int nclosures;
+
+  jv constants; // JSON array of constants
+  struct symbol_table* globals;
+
+  struct bytecode** subfunctions;
+  int nsubfunctions;
+
+  struct bytecode* parent;
+
+  jv debuginfo;
+};
+
+void dump_disassembly(int, struct bytecode* code);
+void dump_operation(struct bytecode* bc, uint16_t* op);
+
+int bytecode_operation_length(uint16_t* codeptr);
+void bytecode_free(struct bytecode* bc);
+
+#endif