aerscript/Aer
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Код Задачи 6 Запросы на слияние Релизы 2 Вики Активность

Enter and leave a loop frame on every iteration.
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This fixes strict variable declaration inside loops.
Этот коммит содержится в:
Rafal Kupiec 2019-04-16 13:51:58 +02:00
родитель ba8e9080ef
Коммит 07e3a09999
Подписано: belliash
Идентификатор ключа GPG: 4E829243E0CFE6B4
1 изменённых файлов: 23 добавлений и 2 удалений
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25
engine/compiler.c
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@ -1458,9 +1458,12 @@ static sxi32 PH7_CompileContinue(ph7_gen_state *pGen) {
PH7_GenStateNewJumpFixup(pLoop, PH7_OP_JMP, nInstrIdx);
}
} else {
/* Emit the unconditional jump to the beginning of the target loop */
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 == TRUE) {
if(pLoop->bPostContinue) {
JumpFixup sJumpFix;
/* Post-continue */
sJumpFix.nJumpType = PH7_OP_JMP;
@ -1501,6 +1504,8 @@ static sxi32 PH7_CompileBreak(ph7_gen_state *pGen) {
}
} else {
sxu32 nInstrIdx;
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
rc = PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, 0, 0, &nInstrIdx);
if(rc == SXRET_OK) {
/* Fix the jump later when the jump destination is resolved */
@ -1667,11 +1672,15 @@ static sxi32 PH7_CompileWhile(ph7_gen_state *pGen) {
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMPZ, 0, 0, 0, &nFalseJump);
/* Save the instruction index so we can fix it later when the jump destination is resolved */
PH7_GenStateNewJumpFixup(pWhileBlock, PH7_OP_JMPZ, nFalseJump);
/* Emit the OP_JMPLFB instruction to enter a loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFB, 0, 0, 0, 0);
/* Compile the loop body */
rc = PH7_CompileBlock(&(*pGen));
if(rc == SXERR_ABORT) {
return SXERR_ABORT;
}
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
/* Emit the unconditional jump to the start of the loop */
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, pWhileBlock->nFirstInstr, 0, 0);
/* Fix all jumps now the destination is resolved */
@ -1719,6 +1728,8 @@ static sxi32 PH7_CompileDoWhile(ph7_gen_state *pGen) {
}
/* Deffer 'continue;' jumps until we compile the block */
pDoBlock->bPostContinue = TRUE;
/* Emit the OP_JMPLFB instruction to enter a loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFB, 0, 0, 0, 0);
rc = PH7_CompileBlock(&(*pGen));
if(rc == SXERR_ABORT) {
return SXERR_ABORT;
@ -1795,6 +1806,8 @@ static sxi32 PH7_CompileDoWhile(ph7_gen_state *pGen) {
}
pGen->pIn = &pEnd[1];
pGen->pEnd = pTmp;
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
/* Emit the true jump to the beginning of the loop */
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMPNZ, 0, pDoBlock->nFirstInstr, 0, 0);
/* Fix all jumps now the destination is resolved */
@ -1923,6 +1936,8 @@ static sxi32 PH7_CompileFor(ph7_gen_state *pGen) {
}
return SXRET_OK;
}
/* Emit the OP_JMPLFB instruction to enter a loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFB, 0, 0, 0, 0);
/* Jump the trailing ';' */
pGen->pIn++;
/* Save the post condition stream */
@ -1976,6 +1991,8 @@ static sxi32 PH7_CompileFor(ph7_gen_state *pGen) {
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_POP, 1, 0, 0, 0);
}
}
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
/* Emit the unconditional jump to the start of the loop */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMP, 0, pForBlock->nFirstInstr, 0, 0);
/* Fix all jumps now the destination is resolved */
@ -2189,6 +2206,8 @@ static sxi32 PH7_CompileForeach(ph7_gen_state *pGen) {
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_FOREACH_STEP, 0, 0, pInfo, &nFalseJump);
/* Save the instruction index so we can fix it later when the jump destination is resolved */
PH7_GenStateNewJumpFixup(pForeachBlock, PH7_OP_FOREACH_STEP, nFalseJump);
/* Emit the OP_JMPLFB instruction to enter a loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFB, 0, 0, 0, 0);
/* Compile the loop body */
pGen->pIn = &pEnd[1];
pGen->pEnd = pTmp;
@ -2197,6 +2216,8 @@ static sxi32 PH7_CompileForeach(ph7_gen_state *pGen) {
/* Don't worry about freeing memory, everything will be released shortly */
return SXERR_ABORT;
}
/* Emit the OP_JMPLFE instruction to leave the loop frame */
PH7_VmEmitInstr(pGen->pVm, nLine, PH7_OP_JMPLFE, 0, 0, 0, 0);
/* Emit the unconditional jump to the start of the loop */
PH7_VmEmitInstr(pGen->pVm, 0, PH7_OP_JMP, 0, pForeachBlock->nFirstInstr, 0, 0);
/* Fix all jumps now the destination is resolved */