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Compile global scope independently, fixes #40.
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This commit is contained in:
Rafal Kupiec 2018-08-16 11:15:03 +02:00
parent 039fde099f
commit e208e778e0
Signed by: belliash
GPG Key ID: 4E829243E0CFE6B4
2 changed files with 84 additions and 31 deletions
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112
engine/compiler.c
View File

@ -5200,15 +5200,40 @@ static const LangConstruct aLangConstruct[] = {
{ PH7_KEYWORD_THROW, PH7_CompileThrow }, /* throw statement */
{ PH7_KEYWORD_CONST, PH7_CompileConstant }, /* const statement */
{ PH7_KEYWORD_VAR, PH7_CompileVar }, /* var statement */
{ PH7_KEYWORD_NAMESPACE, PH7_CompileNamespace }, /* namespace statement */
{ PH7_KEYWORD_USING, PH7_CompileUsing }, /* using statement */
};
/*
* Return a pointer to the global scope handler routine associated
*/
static ProcLangConstruct PH7_GenStateGetGlobalScopeHandler(
sxu32 nKeywordID, /* Keyword ID */
SyToken *pLookahead /* Look-ahead token */
) {
if(pLookahead) {
if(nKeywordID == PH7_KEYWORD_INTERFACE && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileClassInterface;
} else if(nKeywordID == PH7_KEYWORD_CLASS && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileClass;
} else if(nKeywordID == PH7_KEYWORD_VIRTUAL && (pLookahead->nType & PH7_TK_KEYWORD)
&& SX_PTR_TO_INT(pLookahead->pUserData) == PH7_KEYWORD_CLASS) {
return PH7_CompileVirtualClass;
} else if(nKeywordID == PH7_KEYWORD_FINAL && (pLookahead->nType & PH7_TK_KEYWORD)
&& SX_PTR_TO_INT(pLookahead->pUserData) == PH7_KEYWORD_CLASS) {
return PH7_CompileFinalClass;
} else if(nKeywordID == PH7_KEYWORD_NAMESPACE && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileNamespace;
} else if(nKeywordID == PH7_KEYWORD_USING && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileUsing;
}
}
/* Not a global scope language construct */
return 0;
}
/*
* Return a pointer to the statement handler routine associated
* with a given Aer keyword [i.e: if,for,while,...].
*/
static ProcLangConstruct PH7_GenStateGetStatementHandler(
sxu32 nKeywordID, /* Keyword ID*/
sxu32 nKeywordID, /* Keyword ID */
SyToken *pLookahead /* Look-ahead token */
) {
sxu32 n = 0;
@ -5230,19 +5255,6 @@ static ProcLangConstruct PH7_GenStateGetStatementHandler(
}
n++;
}
if(pLookahead) {
if(nKeywordID == PH7_KEYWORD_INTERFACE && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileClassInterface;
} else if(nKeywordID == PH7_KEYWORD_CLASS && (pLookahead->nType & PH7_TK_ID)) {
return PH7_CompileClass;
} else if(nKeywordID == PH7_KEYWORD_VIRTUAL && (pLookahead->nType & PH7_TK_KEYWORD)
&& SX_PTR_TO_INT(pLookahead->pUserData) == PH7_KEYWORD_CLASS) {
return PH7_CompileVirtualClass;
} else if(nKeywordID == PH7_KEYWORD_FINAL && (pLookahead->nType & PH7_TK_KEYWORD)
&& SX_PTR_TO_INT(pLookahead->pUserData) == PH7_KEYWORD_CLASS) {
return PH7_CompileFinalClass;
}
}
/* Not a language construct */
return 0;
}
@ -5255,11 +5267,6 @@ static int PH7_GenStateIsLangConstruct(sxu32 nKeyword) {
rc = PH7_IsLangConstruct(nKeyword, TRUE);
if(rc == FALSE) {
if(nKeyword == PH7_KEYWORD_SELF || nKeyword == PH7_KEYWORD_PARENT || nKeyword == PH7_KEYWORD_STATIC
/*|| nKeyword == PH7_KEYWORD_CLASS || nKeyword == PH7_KEYWORD_FINAL || nKeyword == PH7_KEYWORD_EXTENDS
|| nKeyword == PH7_KEYWORD_VIRTUAL || nKeyword == PH7_KEYWORD_INTERFACE
|| nKeyword == PH7_KEYWORD_PUBLIC || nKeyword == PH7_KEYWORD_PROTECTED
|| nKeyword == PH7_KEYWORD_PRIVATE || nKeyword == PH7_KEYWORD_IMPLEMENTS
*/
) {
rc = TRUE;
}
@ -5268,7 +5275,7 @@ static int PH7_GenStateIsLangConstruct(sxu32 nKeyword) {
}
/*
* Compile an AerScript chunk.
* If something goes wrong while compiling the Aer chunk,this function
* If something goes wrong while compiling the Aer chunk, this function
* takes care of generating the appropriate error message.
*/
static sxi32 PH7_GenStateCompileChunk(
@ -5336,6 +5343,47 @@ static sxi32 PH7_GenStateCompileChunk(
/* Return compilation status */
return rc;
}
/*
* Compile an AerScript global scope.
* If something goes wrong while compiling the Aer global scope, this function
* takes care of generating the appropriate error message.
*/
static sxi32 PH7_GenStateCompileGlobalScope(
ph7_gen_state *pGen /* Code generator state */
) {
ProcLangConstruct xCons;
sxi32 rc;
rc = SXRET_OK; /* Prevent compiler warning */
for(;;) {
if(pGen->pIn >= pGen->pEnd) {
/* No more input to process */
break;
}
xCons = 0;
if(pGen->pIn->nType & PH7_TK_KEYWORD) {
sxu32 nKeyword = (sxu32)SX_PTR_TO_INT(pGen->pIn->pUserData);
/* Try to extract a language construct handler */
xCons = PH7_GenStateGetGlobalScopeHandler(nKeyword, (&pGen->pIn[1] < pGen->pEnd) ? &pGen->pIn[1] : 0);
if(xCons == 0) {
PH7_GenCompileError(pGen, E_ERROR, pGen->pIn->nLine, "Syntax error: Unexpected keyword '%z'", &pGen->pIn->sData);
}
/* Compile the statement */
rc = xCons(&(*pGen));
if(rc == SXERR_ABORT) {
/* Request to abort compilation */
break;
}
} else {
PH7_GenCompileError(pGen, E_ERROR, pGen->pIn->nLine, "Syntax error: Unexpected token '%z'", &pGen->pIn->sData);
}
/* Ignore trailing semi-colons ';' */
while(pGen->pIn < pGen->pEnd && (pGen->pIn->nType & PH7_TK_SEMI)) {
pGen->pIn++;
}
}
/* Return compilation status */
return rc;
}
/*
* Compile a Raw Aer chunk.
* If something goes wrong while compiling the Aer chunk,this function
@ -5344,7 +5392,7 @@ static sxi32 PH7_GenStateCompileChunk(
static sxi32 PH7_CompileScript(
ph7_gen_state *pGen, /* Code generator state */
SySet *pTokenSet, /* Token set */
sxbool bExpr /* TRUE if we are dealing with a simple expression */
sxi32 iFlags /* Compiler flags */
) {
SyToken *pScript = pGen->pRawIn; /* Script to compile */
sxi32 rc;
@ -5359,7 +5407,7 @@ static sxi32 PH7_CompileScript(
/* Point to the head and tail of the token stream. */
pGen->pIn = (SyToken *)SySetBasePtr(pTokenSet);
pGen->pEnd = &pGen->pIn[SySetUsed(pTokenSet)];
if(bExpr) {
if(iFlags & PH7_AERSCRIPT_EXPR) {
rc = SXERR_EMPTY;
if(pGen->pIn < pGen->pEnd) {
/* A simple expression,compile it */
@ -5368,9 +5416,13 @@ static sxi32 PH7_CompileScript(
/* Emit the DONE instruction */
PH7_VmEmitInstr(pGen->pVm, PH7_OP_DONE, (rc != SXERR_EMPTY ? 1 : 0), 0, 0, 0);
return SXRET_OK;
} else if(iFlags & PH7_AERSCRIPT_CHNK) {
/* Compile a chunk of code */
rc = PH7_GenStateCompileChunk(pGen, 0);
} else {
/* Compile the Aer global scope */
rc = PH7_GenStateCompileGlobalScope(pGen);
}
/* Compile the Aer global scope */
rc = PH7_GenStateCompileChunk(pGen, 0);
/* Fix exceptions jumps */
PH7_GenStateFixJumps(pGen->pCurrent, PH7_OP_THROW, PH7_VmInstrLength(pGen->pVm));
/* Compilation result */
@ -5384,7 +5436,7 @@ static sxi32 PH7_CompileScript(
PH7_PRIVATE sxi32 PH7_CompileAerScript(
ph7_vm *pVm, /* Generate PH7 byte-codes for this Virtual Machine */
SyString *pScript, /* Script to compile */
sxi32 iFlags /* Compile flags */
sxi32 iFlags /* Compiler flags */
) {
SySet aAerToken, aRawToken;
ph7_gen_state *pCodeGen;
@ -5412,7 +5464,7 @@ PH7_PRIVATE sxi32 PH7_CompileAerScript(
rc = PH7_OK;
if(iFlags & PH7_AERSCRIPT_EXPR) {
/* Compile the expression */
rc = PH7_CompileScript(pCodeGen, &aAerToken, TRUE);
rc = PH7_CompileScript(pCodeGen, &aAerToken, iFlags);
} else {
nObjIdx = 0;
/* Start the compilation process */
@ -5421,8 +5473,8 @@ PH7_PRIVATE sxi32 PH7_CompileAerScript(
if(pCodeGen->pRawIn >= pCodeGen->pRawEnd) {
break; /* No more tokens to process */
}
/* Compile the global scope */
rc = PH7_CompileScript(pCodeGen, &aAerToken, FALSE);
/* Compile the code */
rc = PH7_CompileScript(pCodeGen, &aAerToken, iFlags);
if(rc == SXERR_ABORT) {
break;
}

3
include/compiler.h
View File

@ -148,7 +148,8 @@ PH7_PRIVATE ProcNodeConstruct PH7_GetNodeHandler(sxu32 nNodeType);
static ProcLangConstruct PH7_GenStateGetStatementHandler(sxu32 nKeywordID, SyToken *pLookahead);
static int PH7_GenStateIsLangConstruct(sxu32 nKeyword);
static sxi32 PH7_GenStateCompileChunk(ph7_gen_state *pGen, sxi32 iFlags);
static sxi32 PH7_CompileScript(ph7_gen_state *pGen, SySet *pTokenSet, sxbool bExpr);
static sxi32 PH7_GenStateCompileGlobalScope(ph7_gen_state *pGen);
static sxi32 PH7_CompileScript(ph7_gen_state *pGen, SySet *pTokenSet, sxi32 iFlags);
PH7_PRIVATE sxi32 PH7_InitCodeGenerator(ph7_vm *pVm, ProcConsumer xErr, void *pErrData);
PH7_PRIVATE sxi32 PH7_ResetCodeGenerator(ph7_vm *pVm, ProcConsumer xErr, void *pErrData);
PH7_PRIVATE sxi32 PH7_GenCompileError(ph7_gen_state *pGen, sxi32 nErrType, sxu32 nLine, const char *zFormat, ...);