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Added CObjError, cosmoV_throw(), pcall(), and cosmoV_printError()

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Errors are now handled very differently, parser errors and VM errors are now treated the same.
When cosmoV_error is called, cosmoV_throw is also called, which formats the error object and sets the panic state.
state->error now points to the latest CObjError when state->panic is true. To get a nice formatted Objection message, use
cosmoV_printError() and pass the state->error. pcall() was added to the standard base library. When called, the first argument
passed is called with the subsequent arguments given. If the call completed successfully, `true`,`nil` is returned. However
when an error occurs during the call, `false`,`<error>` is returned. Simply print the `<error>` to retrieve the error string.
This commit is contained in:
CPunch
2021-01-05 22:27:59 -06:00
parent 417a1f15f1
commit eb2f50e456
13 changed files with 195 additions and 65 deletions
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4
src/cvm.h
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@@ -14,12 +14,16 @@ typedef enum {
// args = # of pass parameters, nresults = # of expected results
COSMO_API COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults);
COSMO_API COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults);
COSMO_API void cosmoV_makeObject(CState *state, int pairs);
COSMO_API void cosmoV_makeDictionary(CState *state, int pairs);
COSMO_API bool cosmoV_getObject(CState *state, CObjObject *object, CValue key, CValue *val);
COSMO_API void cosmoV_concat(CState *state, int vals);
COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...);
COSMO_API void cosmoV_printError(CState *state, CObjError *err);
COSMO_API CObjError* cosmoV_throw(CState *state);
COSMO_API void cosmoV_error(CState *state, const char *format, ...);
COSMO_API void cosmo_insert(CState *state, int indx, CValue val);
// nice to have wrappers