aerscript/Aer
0
5
Fork 0
Código Issues 6 Pull requests Versões 2 Wiki Atividade

Do not allow 'continue' statement in a switch case.
Todas as verificações foram bem sucedidas
The build was successful.
Detalhes

Ver código fonte 
Important rule while using continue statement is that, We can use continue
statement only within the loops. Switch case is conditional block not a loop
so we cannot execute the continue statement inside switch.
Esse commit está contido em:
Rafal Kupiec 2019-04-17 11:13:29 +02:00
commit bd22425b46
Assinado por: belliash
ID da chave GPG: 4E829243E0CFE6B4
1 arquivos alterados com 13 adições e 25 exclusões
Mostrar estatísticas Baixar arquivo de patch Baixar arquivo de diferenças Expandir todos os arquivos Colapsar todos os arquivos

38
engine/compiler.c
Ver arquivo

@ -1438,38 +1438,26 @@ static sxi32 PH7_CompileContinue(ph7_gen_state *pGen) {
pGen->pIn++;
/* Point to the target loop */
pLoop = PH7_GenStateFetchBlock(pGen->pCurrent, GEN_BLOCK_LOOP, 0);
if(pLoop == 0) {
if(pLoop == 0 || pLoop->iFlags & GEN_BLOCK_SWITCH) {
/* Illegal continue */
rc = PH7_GenCompileError(pGen, E_ERROR, nLine, "A 'continue' statement may only be used within a loop or switch");
rc = PH7_GenCompileError(pGen, E_ERROR, nLine, "A 'continue' statement may only be used within a loop");
if(rc == SXERR_ABORT) {
/* Error count limit reached,abort immediately */
return SXERR_ABORT;
}
} else {
sxu32 nInstrIdx = 0;
if(pLoop->iFlags & GEN_BLOCK_SWITCH) {
/*
* Note that unlike some other languages, the continue statement applies to switch
* and acts similar to break. If you have a switch inside a loop and wish to continue
* to the next iteration of the outer loop, use continue 2.
*/
rc = PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, 0, 0, &nInstrIdx);
if(rc == SXRET_OK) {
PH7_GenStateNewJumpFixup(pLoop, PH7_OP_JMP, nInstrIdx);
}
} else {
if(!pLoop->bPostContinue) {
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
}
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, pLoop->nFirstInstr, 0, &nInstrIdx);
if(pLoop->bPostContinue) {
JumpFixup sJumpFix;
/* Post-continue */
sJumpFix.nJumpType = PH7_OP_JMP;
sJumpFix.nInstrIdx = nInstrIdx;
SySetPut(&pLoop->aPostContFix, (const void *)&sJumpFix);
}
if(!pLoop->bPostContinue) {
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
}
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, pLoop->nFirstInstr, 0, &nInstrIdx);
if(pLoop->bPostContinue) {
JumpFixup sJumpFix;
/* Post-continue */
sJumpFix.nJumpType = PH7_OP_JMP;
sJumpFix.nInstrIdx = nInstrIdx;
SySetPut(&pLoop->aPostContFix, (const void *)&sJumpFix);
}
}
if(pGen->pIn < pGen->pEnd && (pGen->pIn->nType & PH7_TK_SEMI) == 0) {