Function ScriptEngineParse

hyperdbg/script-engine/code/script-engine.c:342–696

* @brief The entry point of script engine * * @param str * @return PVOID */

 * @return PVOID
 */
PVOID
ScriptEngineParse(char * str)
{
    char * ScriptSource = PlatformStrDup(str);

    PSCRIPT_ENGINE_TOKEN_LIST Stack        = NewTokenList();
    PSCRIPT_ENGINE_TOKEN_LIST MatchedStack = NewTokenList();
    PSYMBOL_BUFFER            CodeBuffer   = NewSymbolBuffer();

    UserDefinedFunctionHead = malloc(sizeof(USER_DEFINED_FUNCTION_NODE));
    PlatformZeroMemory(UserDefinedFunctionHead, sizeof(USER_DEFINED_FUNCTION_NODE));
    UserDefinedFunctionHead->Name                     = PlatformStrDup("main");
    UserDefinedFunctionHead->IdTable                  = (unsigned long long)NewTokenList();
    UserDefinedFunctionHead->FunctionParameterIdTable = (unsigned long long)NewTokenList();
    UserDefinedFunctionHead->TempMap                  = calloc(MAX_TEMP_COUNT, 1);
    UserDefinedFunctionHead->VariableType             = (unsigned long long)VARIABLE_TYPE_VOID;

    CurrentUserDefinedFunction = UserDefinedFunctionHead;

    SCRIPT_ENGINE_ERROR_TYPE Error        = SCRIPT_ENGINE_ERROR_FREE;
    char *                   ErrorMessage = NULL;

    static INT FirstCall = 1;
    if (FirstCall)
    {
        GlobalIdTable = NewTokenList();
        FirstCall     = 0;
    }

    PSCRIPT_ENGINE_TOKEN TopToken = NewUnknownToken();

    int  NonTerminalId;
    int  TerminalId;
    int  RuleId;
    CHAR C;
    BOOL WaitForWaitStatementBooleanExpression = FALSE;

    //
    // Initialize Scanner
    //
    InputIdx       = 0;
    CurrentLine    = 0;
    CurrentLineIdx = 0;

    //
    // End of File Token
    //
    PSCRIPT_ENGINE_TOKEN EndToken = NewToken(END_OF_STACK, "$");

    //
    // Start Token
    //
    PSCRIPT_ENGINE_TOKEN StartToken = NewToken(NON_TERMINAL, START_VARIABLE);

    Push(Stack, EndToken);
    Push(Stack, StartToken);

    C = sgetc(ScriptSource);