File content as of revision 0:1a89e28dea91:

#ifndef VM_H
#define VM_H


#include <stdint.h>
#include <inttypes.h>
#include "struct.h"
#include "util.h"
#include "variable.h"

#define ERROR_NULL  "null pointer"
#define ERROR_INDEX "index out of bounds"

struct Context {
    struct program_state *vm_state;
    struct stack *program_stack;
    struct stack *operand_stack;
    struct stack *rhs;
    struct variable *vm_exception;
    bridge *callback2c;
    bool runtime;
    uint32_t num_vars;
    struct variable* error;
    uint8_t indent;
};

enum Opcode {
    VM_NIL,    //    push nil
    VM_INT,    //    push an integer
    VM_FLT,    //    push a float
    VM_BOOL,//    push a boolean
    VM_STR,    //    push a string
    VM_VAR,    //    push a variable
    VM_FNC,    //    push a function
    VM_DST,    //    done with assignment
    VM_SET, //  set a variable
    VM_SRC,    //    push a set of values
    VM_LST,    //    push a list
    VM_MAP,    //    push a map
    VM_GET,    //    get an item from a list or map
    VM_PUT,    //    put an item in a list or map
    VM_ADD,    //    add two values
    VM_SUB,    //    subtract two values
    VM_MUL,    //    multiply two values
    VM_DIV,    //    divide two values
    VM_MOD,    //    modulo
    VM_BND,    //    bitwise and
    VM_BOR,    //    bitwise or
    VM_INV,    //    bitwise inverse
    VM_XOR,    //    xor
    VM_LSF,    //    left shift
    VM_RSF,    //    right shift
    VM_NEG,    //    arithmetic negate a value
    VM_NOT,    //    boolean negate a value
    VM_EQU,    //    compare
    VM_NEQ,    //    diff
    VM_GTN,    //    greater than
    VM_LTN,    //    less than
    VM_AND,    //    logical and
    VM_OR,    //    logical or
    VM_IFF,    //    if then
    VM_JMP,    //    jump the program counter
    VM_CAL,    //    call a function
    VM_MET,    //    call an object method
    VM_RET,    //    return from a function,
    VM_ITR,    //    iteration loop
    VM_COM,    //    comprehension
    VM_TRY,    //    try.catch
    VM_TRO, //    throw
};

#define ERROR_OPCODE "unknown opcode"

#ifdef DEBUG
void display_program(struct byte_array* program);
#endif
struct Context *vm_init();
struct variable *execute(struct byte_array *program,
                         bool in_context,
                         bridge *callback_to_c);
void garbage_collect(struct Context *context);

void vm_call(struct Context *context);
void *vm_exit_message(struct Context *context, const char *format, ...);
void vm_null_check(struct Context *context, const void* p);
void vm_assert(struct Context *context, bool assertion, const char *format, ...);

#endif // VM_H