Diff: vm.h

Revision:

0:1a89e28dea91

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vm.h	Wed May 30 21:13:01 2012 +0000
@@ -0,0 +1,88 @@
+#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