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added string.sub()

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This commit is contained in:
CPunch 2020-12-31 02:26:06 -06:00
parent e993cdd9fa
commit e253129e50
4 changed files with 71 additions and 17 deletions
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82
src/cbaselib.c
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@ -4,18 +4,6 @@
#include "cobj.h"
#include "cmem.h"
void cosmoB_loadLibrary(CState *state) {
// print
cosmoV_pushString(state, "print");
cosmoV_pushCFunction(state, cosmoB_print);
// assert (for unit testing)
cosmoV_pushString(state, "assert");
cosmoV_pushCFunction(state, cosmoB_assert);
cosmoV_register(state, 2);
}
int cosmoB_print(CState *state, int nargs, CValue *args) {
for (int i = 0; i < nargs; i++) {
CObjString *str = cosmoV_toString(state, args[i]);
@ -33,7 +21,7 @@ int cosmoB_assert(CState *state, int nargs, CValue *args) {
}
if (!IS_BOOLEAN(args[0])) {
cosmoV_error(state, "assert() expected <boolean>, got %s!", cosmoV_typeStr(args[0]));
cosmoV_error(state, "assert() expected (<boolean>), got (%s!)", cosmoV_typeStr(args[0]));
return 0;
}
@ -44,6 +32,51 @@ int cosmoB_assert(CState *state, int nargs, CValue *args) {
return 0;
}
// ================================================================ [STRING.*] ================================================================
// string.sub
int cosmoB_sSub(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
if (!IS_STRING(args[0]) || !IS_NUMBER(args[1])) {
cosmoV_error(state, "string.sub() expected (<string>, <number>), got (%s, %s)!", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
cosmo_Number indx = cosmoV_readNumber(args[1]);
// make sure we stay within memory
if (indx < 0 || indx >= str->length) {
cosmoV_error(state, "string.sub() Expected index to be 0-%d, got %d!", str->length, indx);
return 0;
}
cosmoV_pushLString(state, str->str + ((int)indx), str->length - ((int)indx));
} else if (nargs == 3) {
if (!IS_STRING(args[0]) || !IS_NUMBER(args[1]) || !IS_NUMBER(args[2])) {
cosmoV_error(state, "string.sub() expected (<string>, <number>, <number>), got (%s, %s, %s)!", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]), cosmoV_typeStr(args[2]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
cosmo_Number indx = cosmoV_readNumber(args[1]);
cosmo_Number length = cosmoV_readNumber(args[2]);
// make sure we stay within memory
if (indx + length < 0 || indx + length >= str->length || indx < 0 || indx >= str->length) {
cosmoV_error(state, "string.sub() Expected subbed string goes out of bounds, max length is %d!", str->length);
return 0;
}
cosmoV_pushLString(state, str->str + ((int)indx), ((int)length));
} else {
cosmoV_error(state, "Expected 2 or 3 parameters, got %d!", nargs);
return 0;
}
return 1;
}
int cosmoB_dsetProto(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
CObjObject *obj = cosmoV_readObject(args[0]); // object to set proto too
@ -67,6 +100,29 @@ int cosmoB_dgetProto(CState *state, int nargs, CValue *args) {
return 1; // 1 result
}
void cosmoB_loadLibrary(CState *state) {
// print
cosmoV_pushString(state, "print");
cosmoV_pushCFunction(state, cosmoB_print);
// assert (for unit testing)
cosmoV_pushString(state, "assert");
cosmoV_pushCFunction(state, cosmoB_assert);
// string.
cosmoV_pushString(state, "string");
// sub
cosmoV_pushString(state, "sub");
cosmoV_pushCFunction(state, cosmoB_sSub);
cosmoV_makeDictionary(state, 1);
// string.
// register these all to the global table
cosmoV_register(state, 3);
}
void cosmoB_loadDebug(CState *state) {
// make __getter object for debug proto
cosmoV_pushString(state, "__getter");

1
src/cbaselib.h
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@ -3,7 +3,6 @@
#include "cstate.h"
COSMO_API void cosmoB_loadLibrary(CState *state);
COSMO_API void cosmoB_loadDebug(CState *state);
COSMO_API int cosmoB_print(CState *state, int nargs, CValue *args);

1
src/cparse.c
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@ -371,7 +371,6 @@ static void alignStack(CParseState *pstate, int alignment) {
writePop(pstate, pstate->compiler->pushedValues - alignment);
} else if (pstate->compiler->pushedValues < alignment) {
error(pstate, "Missing expression!");
printf("%d < %d\n", pstate->compiler->pushedValues, alignment);
}
pstate->compiler->pushedValues = alignment;

4
src/cvm.c
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@ -673,9 +673,9 @@ int cosmoV_execute(CState *state) {
// call closure/cfunction
if (IS_CFUNCTION(val)) {
callCFunction(state, cosmoV_readCFunction(val), args, nres, 0);
callCFunction(state, cosmoV_readCFunction(val), args, nres, -1);
} else if (IS_CLOSURE(val)) {
call(state, cosmoV_readClosure(val), args, nres, 0);
call(state, cosmoV_readClosure(val), args, nres, -1);
} else {
cosmoV_error(state, "Cannot call non-function value %s!", cosmoV_typeStr(val));
return -1;