ceph/src/civetweb/src/third_party/duktape-1.3.0/src-separate/duk_js.h

   1 /*
   2  *  Ecmascript execution, support primitives.
   3  */
   4
   5 #ifndef DUK_JS_H_INCLUDED
   6 #define DUK_JS_H_INCLUDED
   7
   8 /* Flags for call handling. */
   9 #define DUK_CALL_FLAG_PROTECTED              (1 << 0)  /* duk_handle_call: call is protected */
  10 #define DUK_CALL_FLAG_IGNORE_RECLIMIT        (1 << 1)  /* duk_handle_call: call ignores C recursion limit (for errhandler calls) */
  11 #define DUK_CALL_FLAG_CONSTRUCTOR_CALL       (1 << 2)  /* duk_handle_call: constructor call (i.e. called as 'new Foo()') */
  12 #define DUK_CALL_FLAG_IS_RESUME              (1 << 3)  /* duk_handle_ecma_call_setup: setup for a resume() */
  13 #define DUK_CALL_FLAG_IS_TAILCALL            (1 << 4)  /* duk_handle_ecma_call_setup: setup for a tail call */
  14 #define DUK_CALL_FLAG_DIRECT_EVAL            (1 << 5)  /* call is a direct eval call */
  15
  16 /* Flags for duk_js_equals_helper(). */
  17 #define DUK_EQUALS_FLAG_SAMEVALUE            (1 << 0)  /* use SameValue instead of non-strict equality */
  18 #define DUK_EQUALS_FLAG_STRICT               (1 << 1)  /* use strict equality instead of non-strict equality */
  19
  20 /* Flags for duk_js_compare_helper(). */
  21 #define DUK_COMPARE_FLAG_EVAL_LEFT_FIRST     (1 << 0)  /* eval left argument first */
  22 #define DUK_COMPARE_FLAG_NEGATE              (1 << 1)  /* negate result */
  23
  24 /* conversions, coercions, comparison, etc */
  25 DUK_INTERNAL_DECL duk_bool_t duk_js_toboolean(duk_tval *tv);
  26 DUK_INTERNAL_DECL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv);
  27 DUK_INTERNAL_DECL duk_double_t duk_js_tointeger_number(duk_double_t x);
  28 DUK_INTERNAL_DECL duk_double_t duk_js_tointeger(duk_hthread *thr, duk_tval *tv);
  29 DUK_INTERNAL_DECL duk_uint32_t duk_js_touint32(duk_hthread *thr, duk_tval *tv);
  30 DUK_INTERNAL_DECL duk_int32_t duk_js_toint32(duk_hthread *thr, duk_tval *tv);
  31 DUK_INTERNAL_DECL duk_uint16_t duk_js_touint16(duk_hthread *thr, duk_tval *tv);
  32 DUK_INTERNAL_DECL duk_small_int_t duk_js_to_arrayindex_raw_string(const duk_uint8_t *str, duk_uint32_t blen, duk_uarridx_t *out_idx);
  33 DUK_INTERNAL_DECL duk_uarridx_t duk_js_to_arrayindex_string_helper(duk_hstring *h);
  34 DUK_INTERNAL_DECL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags);
  35 DUK_INTERNAL_DECL duk_small_int_t duk_js_data_compare(const duk_uint8_t *buf1, const duk_uint8_t *buf2, duk_size_t len1, duk_size_t len2);
  36 DUK_INTERNAL_DECL duk_small_int_t duk_js_string_compare(duk_hstring *h1, duk_hstring *h2);
  37 #if 0  /* unused */
  38 DUK_INTERNAL_DECL duk_small_int_t duk_js_buffer_compare(duk_heap *heap, duk_hbuffer *h1, duk_hbuffer *h2);
  39 #endif
  40 DUK_INTERNAL_DECL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags);
  41 DUK_INTERNAL_DECL duk_bool_t duk_js_instanceof(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y);
  42 DUK_INTERNAL_DECL duk_bool_t duk_js_in(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y);
  43 DUK_INTERNAL_DECL duk_hstring *duk_js_typeof(duk_hthread *thr, duk_tval *tv_x);
  44
  45 #define duk_js_equals(thr,tv_x,tv_y) \
  46         duk_js_equals_helper((thr), (tv_x), (tv_y), 0)
  47 #define duk_js_strict_equals(tv_x,tv_y) \
  48         duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_STRICT)
  49 #define duk_js_samevalue(tv_x,tv_y) \
  50         duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_SAMEVALUE)
  51
  52 /* E5 Sections 11.8.1, 11.8.5; x < y */
  53 #define duk_js_lessthan(thr,tv_x,tv_y) \
  54         duk_js_compare_helper((thr), (tv_x), (tv_Y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST)
  55
  56 /* E5 Sections 11.8.2, 11.8.5; x > y  -->  y < x */
  57 #define duk_js_greaterthan(thr,tv_x,tv_y) \
  58         duk_js_compare_helper((thr), (tv_y), (tv_x), 0)
  59
  60 /* E5 Sections 11.8.3, 11.8.5; x <= y  -->  not (x > y)  -->  not (y < x) */
  61 #define duk_js_lessthanorequal(thr,tv_x,tv_y) \
  62         duk_js_compare_helper((thr), (tv_y), (tv_x), DUK_COMPARE_FLAG_NEGATE)
  63
  64 /* E5 Sections 11.8.4, 11.8.5; x >= y  -->  not (x < y) */
  65 #define duk_js_greaterthanorequal(thr,tv_x,tv_y) \
  66         duk_js_compare_helper((thr), (tv_x), (tv_y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST | DUK_COMPARE_FLAG_NEGATE)
  67
  68 /* identifiers and environment handling */
  69 #if 0  /*unused*/
  70 DUK_INTERNAL duk_bool_t duk_js_hasvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name);
  71 #endif
  72 DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_bool_t throw_flag);
  73 DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_bool_t throw_flag);
  74 DUK_INTERNAL_DECL void duk_js_putvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_tval *val, duk_bool_t strict);
  75 DUK_INTERNAL_DECL void duk_js_putvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_tval *val, duk_bool_t strict);
  76 #if 0  /*unused*/
  77 DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name);
  78 #endif
  79 DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name);
  80 DUK_INTERNAL_DECL duk_bool_t duk_js_declvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_tval *val, duk_small_int_t prop_flags, duk_bool_t is_func_decl);
  81 DUK_INTERNAL_DECL void duk_js_init_activation_environment_records_delayed(duk_hthread *thr, duk_activation *act);
  82 DUK_INTERNAL_DECL void duk_js_close_environment_record(duk_hthread *thr, duk_hobject *env, duk_hobject *func, duk_size_t regbase);
  83 DUK_INTERNAL_DECL duk_hobject *duk_create_activation_environment_record(duk_hthread *thr, duk_hobject *func, duk_size_t idx_bottom);
  84 DUK_INTERNAL_DECL
  85 void duk_js_push_closure(duk_hthread *thr,
  86                          duk_hcompiledfunction *fun_temp,
  87                          duk_hobject *outer_var_env,
  88                          duk_hobject *outer_lex_env);
  89
  90 /* call handling */
  91 DUK_INTERNAL_DECL duk_int_t duk_handle_call(duk_hthread *thr, duk_idx_t num_stack_args, duk_small_uint_t call_flags);
  92 DUK_INTERNAL_DECL duk_int_t duk_handle_safe_call(duk_hthread *thr, duk_safe_call_function func, duk_idx_t num_stack_args, duk_idx_t num_stack_res);
  93 DUK_INTERNAL_DECL duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, duk_idx_t num_stack_args, duk_small_uint_t call_flags);
  94
  95 /* bytecode execution */
  96 DUK_INTERNAL_DECL void duk_js_execute_bytecode(duk_hthread *exec_thr);
  97
  98 #endif  /* DUK_JS_H_INCLUDED */