diff --git a/engine/compiler.c b/engine/compiler.c
index 60069bf..c29cfa3 100644
--- a/engine/compiler.c
+++ b/engine/compiler.c
@@ -981,8 +981,6 @@ PH7_PRIVATE sxi32 PH7_CompileList(ph7_gen_state *pGen, sxi32 iCompileFlag) {
 	/* Node successfully compiled */
 	return SXRET_OK;
 }
-/* Forward declaration */
-static sxi32 PH7_GenStateCompileFunc(ph7_gen_state *pGen, SyString *pName, sxi32 iFlags, int bHandleClosure, ph7_vm_func **ppFunc);
 /*
  * Compile an anonymous function or a closure.
  * According to the PHP language reference
diff --git a/include/compiler.h b/include/compiler.h
index 7999e2c..0496589 100644
--- a/include/compiler.h
+++ b/include/compiler.h
@@ -73,5 +73,85 @@ struct LangConstruct {
 
 /* Forward declaration */
 static sxi32 PH7_CompileExpr(ph7_gen_state *pGen, sxi32 iFlags, sxi32(*xTreeValidator)(ph7_gen_state *, ph7_expr_node *));
+static GenBlock *PH7_GenStateFetchBlock(GenBlock *pCurrent, sxi32 iBlockType, sxi32 iCount);
+static void PH7_GenStateInitBlock(ph7_gen_state *pGen, GenBlock *pBlock, sxi32 iType, sxu32 nFirstInstr, void *pUserData);
+static sxi32 PH7_GenStateEnterBlock(ph7_gen_state *pGen, sxi32 iType, sxu32 nFirstInstr, void *pUserData, GenBlock **ppBlock);
+static void PH7_GenStateReleaseBlock(GenBlock *pBlock);
+static void PH7_GenStateFreeBlock(GenBlock *pBlock);
+static sxi32 PH7_GenStateLeaveBlock(ph7_gen_state *pGen, GenBlock **ppBlock);
+static sxi32 PH7_GenStateNewJumpFixup(GenBlock *pBlock, sxi32 nJumpType, sxu32 nInstrIdx);
+static sxu32 PH7_GenStateFixJumps(GenBlock *pBlock, sxi32 nJumpType, sxu32 nJumpDest);
+static sxi32 PH7_GenStateFindLiteral(ph7_gen_state *pGen, const SyString *pValue, sxu32 *pIdx);
+static sxi32 PH7_GenStateInstallLiteral(ph7_gen_state *pGen, ph7_value *pObj, sxu32 nIdx);
+static ph7_value *PH7_GenStateInstallNumLiteral(ph7_gen_state *pGen, sxu32 *pIdx);
+static sxi32 PH7_CompileNumLiteral(ph7_gen_state *pGen, sxi32 iCompileFlag);
+PH7_PRIVATE sxi32 PH7_CompileSimpleString(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_GenStateProcessStringExpression(ph7_gen_state *pGen, sxu32 nLine, const char *zIn, const char *zEnd);
+static ph7_value *PH7_GenStateNewStrObj(ph7_gen_state *pGen, sxi32 *pCount);
+static sxi32 PH7_GenStateCompileString(ph7_gen_state *pGen);
+PH7_PRIVATE sxi32 PH7_CompileString(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_GenStateCompileArrayEntry(ph7_gen_state *pGen, SyToken *pIn, SyToken *pEnd, sxi32 iFlags, sxi32(*xValidator)(ph7_gen_state *, ph7_expr_node *));
+static sxi32 PH7_GenStateArrayNodeValidator(ph7_gen_state *pGen, ph7_expr_node *pRoot);
+PH7_PRIVATE sxi32 PH7_CompileArray(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_GenStateListNodeValidator(ph7_gen_state *pGen, ph7_expr_node *pRoot);
+PH7_PRIVATE sxi32 PH7_CompileList(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_GenStateCompileFunc(ph7_gen_state *pGen, SyString *pName, sxi32 iFlags, int bHandleClosure, ph7_vm_func **ppFunc);
+PH7_PRIVATE sxi32 PH7_CompileAnonFunc(ph7_gen_state *pGen, sxi32 iCompileFlag);
+PH7_PRIVATE sxi32 PH7_CompileLangConstruct(ph7_gen_state *pGen, sxi32 iCompileFlag);
+PH7_PRIVATE sxi32 PH7_CompileVariable(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_GenStateLoadLiteral(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateResolveNamespaceLiteral(ph7_gen_state *pGen);
+PH7_PRIVATE sxi32 PH7_CompileLiteral(ph7_gen_state *pGen, sxi32 iCompileFlag);
+static sxi32 PH7_ErrorRecover(ph7_gen_state *pGen);
+static int PH7_GenStateIsReservedConstant(SyString *pName);
+static sxi32 PH7_CompileConstant(ph7_gen_state *pGen);
+static sxi32 PH7_CompileContinue(ph7_gen_state *pGen);
+static sxi32 PH7_CompileBreak(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateNextChunk(ph7_gen_state *pGen);
+static sxi32 PH7_CompileBlock(ph7_gen_state *pGen);
+static sxi32 PH7_CompileWhile(ph7_gen_state *pGen);
+static sxi32 PH7_CompileDoWhile(ph7_gen_state *pGen);
+static sxi32 PH7_CompileFor(ph7_gen_state *pGen);
+static sxi32 GenStateForEachNodeValidator(ph7_gen_state *pGen, ph7_expr_node *pRoot);
+static sxi32 PH7_CompileForeach(ph7_gen_state *pGen);
+static sxi32 PH7_CompileIf(ph7_gen_state *pGen);
+static sxi32 PH7_CompileReturn(ph7_gen_state *pGen);
+static sxi32 PH7_CompileHalt(ph7_gen_state *pGen);
+static sxi32 PH7_CompileStatic(ph7_gen_state *pGen);
+static sxi32 PH7_CompileVar(ph7_gen_state *pGen);
+static sxi32 PH7_CompileNamespace(ph7_gen_state *pGen);
+static sxi32 PH7_CompileUsing(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateProcessArgValue(ph7_gen_state *pGen, ph7_vm_func_arg *pArg, SyToken *pIn, SyToken *pEnd);
+static sxi32 PH7_GenStateCollectFuncArgs(ph7_vm_func *pFunc, ph7_gen_state *pGen, SyToken *pEnd);
+static sxi32 PH7_GenStateCompileFuncBody(ph7_gen_state *pGen, ph7_vm_func *pFunc);
+static sxi32 PH7_GenStateCompileFunc(ph7_gen_state *pGen, SyString *pName, sxi32 iFlags, int bHandleClosure, ph7_vm_func **ppFunc);
+static sxi32 PH7_CompileFunction(ph7_gen_state *pGen);
+static sxi32 PH7_GetProtectionLevel(sxi32 nKeyword);
+static sxi32 PH7_GenStateCompileClassConstant(ph7_gen_state *pGen, sxi32 iProtection, sxi32 iFlags, ph7_class *pClass);
+static sxi32 PH7_GenStateCompileClassAttr(ph7_gen_state *pGen, sxi32 iProtection, sxi32 iFlags, ph7_class *pClass);
+static sxi32 PH7_GenStateCompileClassMethod(ph7_gen_state *pGen, sxi32 iProtection, sxi32 iFlags, int doBody, ph7_class *pClass);
+static sxi32 PH7_CompileClassInterface(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateCompileClass(ph7_gen_state *pGen, sxi32 iFlags);
+static sxi32 PH7_CompileVirtualClass(ph7_gen_state *pGen);
+static sxi32 PH7_CompileFinalClass(ph7_gen_state *pGen);
+static sxi32 PH7_CompileClass(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateThrowNodeValidator(ph7_gen_state *pGen, ph7_expr_node *pRoot);
+static sxi32 PH7_CompileThrow(ph7_gen_state *pGen);
+static sxi32 PH7_CompileCatch(ph7_gen_state *pGen, ph7_exception *pException);
+static sxi32 PH7_CompileTry(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateCompileSwitchBlock(ph7_gen_state *pGen, sxu32 *pBlockStart);
+static sxi32 PH7_GenStateCompileCaseExpr(ph7_gen_state *pGen, ph7_case_expr *pExpr);
+static sxi32 PH7_CompileSwitch(ph7_gen_state *pGen);
+static sxi32 PH7_GenStateEmitExprCode(ph7_gen_state *pGen, ph7_expr_node *pNode, sxi32 iFlags);
+static sxi32 PH7_CompileExpr(ph7_gen_state *pGen, sxi32 iFlags, sxi32(*xTreeValidator)(ph7_gen_state *, ph7_expr_node *));
+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_CompilePHP(ph7_gen_state *pGen, SySet *pTokenSet, int is_expr);
+PH7_PRIVATE sxi32 PH7_CompileScript(ph7_vm *pVm, SyString *pScript, 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, ...);
 
 #endif /* _COMPILER_H_ */