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Scripting: Start exporting some constants

This commit is contained in:
Vicki Pfau 2022-05-14 19:26:07 -07:00
parent 303fc17e77
commit 5c84278667
3 changed files with 49 additions and 5 deletions
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10
include/mgba/script/context.h
View File

@ -14,6 +14,9 @@ CXX_GUARD_START
#include <mgba-util/table.h>
#include <mgba-util/vfs.h>
#define mSCRIPT_CONSTANT_PAIR(NS, CONST) { #CONST, mScriptValueCreateFromSInt(NS ## _ ## CONST) }
#define mSCRIPT_CONSTANT_SENTINEL { NULL, NULL }
struct mScriptFrame;
struct mScriptFunction;
struct mScriptEngineContext;
@ -25,6 +28,7 @@ struct mScriptContext {
struct Table weakrefs;
uint32_t nextWeakref;
struct Table callbacks;
struct mScriptValue* constants;
};
struct mScriptEngine2 {
@ -50,6 +54,11 @@ struct mScriptEngineContext {
const char* (*getError)(struct mScriptEngineContext*);
};
struct mScriptKVPair {
const char* key;
struct mScriptValue* value;
};
void mScriptContextInit(struct mScriptContext*);
void mScriptContextDeinit(struct mScriptContext*);
@ -70,6 +79,7 @@ struct mScriptValue* mScriptContextAccessWeakref(struct mScriptContext*, struct
void mScriptContextClearWeakref(struct mScriptContext*, uint32_t weakref);
void mScriptContextAttachStdlib(struct mScriptContext* context);
void mScriptContextExportConstants(struct mScriptContext* context, const char* nspace, struct mScriptKVPair* constants);
void mScriptContextTriggerCallback(struct mScriptContext*, const char* callback);
void mScriptContextAddCallback(struct mScriptContext*, const char* callback, struct mScriptValue* value);

24
src/script/context.c
View File

@ -8,11 +8,6 @@
#include <mgba/internal/script/lua.h>
#endif
struct mScriptKVPair {
const char* key;
struct mScriptValue* value;
};
struct mScriptFileInfo {
const char* name;
struct VFile* vf;
@ -61,6 +56,7 @@ void mScriptContextInit(struct mScriptContext* context) {
TableInit(&context->weakrefs, 0, (void (*)(void*)) mScriptValueDeref);
context->nextWeakref = 1;
HashTableInit(&context->callbacks, 0, (void (*)(void*)) mScriptValueDeref);
context->constants = NULL;
}
void mScriptContextDeinit(struct mScriptContext* context) {
@ -223,6 +219,24 @@ void mScriptContextAddCallback(struct mScriptContext* context, const char* callb
mScriptValueWrap(fn, mScriptListAppend(list->value.opaque));
}
void mScriptContextExportConstants(struct mScriptContext* context, const char* nspace, struct mScriptKVPair* constants) {
if (!context->constants) {
context->constants = mScriptValueAlloc(mSCRIPT_TYPE_MS_TABLE);
}
struct mScriptValue* table = mScriptValueAlloc(mSCRIPT_TYPE_MS_TABLE);
size_t i;
for (i = 0; constants[i].key; ++i) {
struct mScriptValue* key = mScriptStringCreateFromUTF8(constants[i].key);
mScriptTableInsert(table, key, constants[i].value);
mScriptValueDeref(key);
mScriptValueDeref(constants[i].value);
}
struct mScriptValue* key = mScriptStringCreateFromUTF8(nspace);
mScriptTableInsert(context->constants, key, table);
mScriptValueDeref(key);
mScriptValueDeref(table);
}
bool mScriptContextLoadVF(struct mScriptContext* context, const char* name, struct VFile* vf) {
struct mScriptFileInfo info = {
.name = name,

20
src/script/stdlib.c
View File

@ -5,6 +5,9 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include <mgba/script/context.h>
#include <mgba/core/core.h>
#include <mgba/core/serialize.h>
struct mScriptCallbackAdapter {
struct mScriptContext* context;
};
@ -34,4 +37,21 @@ void mScriptContextAttachStdlib(struct mScriptContext* context) {
};
lib->flags = mSCRIPT_VALUE_FLAG_FREE_BUFFER;
mScriptContextSetGlobal(context, "callbacks", lib);
mScriptContextExportConstants(context, "SAVESTATE", (struct mScriptKVPair[]) {
mSCRIPT_CONSTANT_PAIR(SAVESTATE, SCREENSHOT),
mSCRIPT_CONSTANT_PAIR(SAVESTATE, SAVEDATA),
mSCRIPT_CONSTANT_PAIR(SAVESTATE, CHEATS),
mSCRIPT_CONSTANT_PAIR(SAVESTATE, RTC),
mSCRIPT_CONSTANT_PAIR(SAVESTATE, METADATA),
mSCRIPT_CONSTANT_PAIR(SAVESTATE, ALL),
mSCRIPT_CONSTANT_SENTINEL
});
mScriptContextExportConstants(context, "PLATFORM", (struct mScriptKVPair[]) {
mSCRIPT_CONSTANT_PAIR(mPLATFORM, NONE),
mSCRIPT_CONSTANT_PAIR(mPLATFORM, GBA),
mSCRIPT_CONSTANT_PAIR(mPLATFORM, GB),
mSCRIPT_CONSTANT_SENTINEL
});
mScriptContextSetGlobal(context, "C", context->constants);
}