mirror of
https://github.com/ccxvii/mujs.git
synced 2026-02-06 09:51:41 +08:00
130 lines
2.7 KiB
C
130 lines
2.7 KiB
C
#include "jsi.h"
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#include "jsvalue.h"
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#include "jsbuiltin.h"
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#include "jsutf.h"
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static int jsB_new_String(js_State *J, int argc)
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{
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js_newstring(J, argc > 0 ? js_tostring(J, 1) : "");
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return 1;
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}
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static int jsB_String(js_State *J, int argc)
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{
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js_pushliteral(J, argc > 0 ? js_tostring(J, 1) : "");
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return 1;
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}
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static int Sp_toString(js_State *J, int argc)
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{
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js_Object *self = js_toobject(J, 0);
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if (self->type != JS_CSTRING) js_typeerror(J, "not a string");
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js_pushliteral(J, self->u.string);
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return 1;
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}
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static int Sp_valueOf(js_State *J, int argc)
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{
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js_Object *self = js_toobject(J, 0);
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if (self->type != JS_CSTRING) js_typeerror(J, "not a string");
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js_pushliteral(J, self->u.string);
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return 1;
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}
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static inline Rune runeAt(const char *s, int i)
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{
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Rune rune = 0;
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while (i-- >= 0) {
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rune = *(unsigned char*)s;
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if (rune < Runeself) {
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if (rune == 0)
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return 0;
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++s;
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} else
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s += chartorune(&rune, s);
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}
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return rune;
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}
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static int Sp_charAt(js_State *J, int argc)
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{
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char buf[UTFmax + 1];
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const char *s = js_tostring(J, 0);
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int pos = js_tointeger(J, 1);
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Rune rune = runeAt(s, pos);
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if (rune > 0) {
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buf[runetochar(buf, &rune)] = 0;
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js_pushstring(J, buf);
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} else {
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js_pushliteral(J, "");
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}
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return 1;
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}
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static int Sp_charCodeAt(js_State *J, int argc)
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{
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const char *s = js_tostring(J, 0);
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int pos = js_tointeger(J, 1);
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Rune rune = runeAt(s, pos);
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if (rune > 0)
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js_pushnumber(J, rune);
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else
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js_pushnumber(J, NAN);
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return 1;
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}
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static int S_fromCharCode(js_State *J, int argc)
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{
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int i;
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Rune c;
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char *s, *p;
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s = p = malloc(argc * UTFmax + 1);
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if (js_try(J)) {
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free(s);
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js_throw(J);
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}
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for (i = 1; i <= argc; ++i) {
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c = js_tointeger(J, i); // TODO: ToUInt16()
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p += runetochar(p, &c);
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}
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*p = 0;
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js_pushstring(J, s);
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js_endtry(J);
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free(s);
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return 1;
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}
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void jsB_initstring(js_State *J)
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{
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J->String_prototype->u.string = "";
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js_pushobject(J, J->String_prototype);
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{
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jsB_propf(J, "toString", Sp_toString, 0);
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jsB_propf(J, "valueOf", Sp_valueOf, 0);
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jsB_propf(J, "charAt", Sp_charAt, 1);
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jsB_propf(J, "charCodeAt", Sp_charCodeAt, 1);
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//jsB_propf(J, "concat", Sp_concat, 1);
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//jsB_propf(J, "indexOf", Sp_indexOf, 1);
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//jsB_propf(J, "lastIndexOf", Sp_lastIndexOf, 1);
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//jsB_propf(J, "localeCompare", Sp_localeCompare, 1);
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//jsB_propf(J, "slice", Sp_slice, 2);
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// match (uses regexp)
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// replace (uses regexp)
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// search (uses regexp)
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// split (uses regexp)
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//jsB_propf(J, "substring", Sp_substring, 2);
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//jsB_propf(J, "toLowerCase", Sp_toLowerCase, 0);
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//jsB_propf(J, "toUpperCase", Sp_toUpperCase, 0);
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}
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js_newcconstructor(J, jsB_String, jsB_new_String, 1);
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{
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jsB_propf(J, "fromCharCode", S_fromCharCode, 1);
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}
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js_defglobal(J, "String", JS_DONTENUM);
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}
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