public CGrammarNode CreateParser(ref CLexicalAnalyzer plexAnal, STATEMENT_TYPE stmt_type)
{
CGrammarNode pNode = null;
CToken pToken = null;
if ((CLexicalAnalyzer.LEX_FAIL != (plexAnal.LookAheadToken(ref pToken))) && pToken != null)
{
if (((stmt_type == STATEMENT_TYPE.STMT_DECL) || (stmt_type == STATEMENT_TYPE.STMT_asic)) &&
((pToken.GetType() == RUL_TOKEN_TYPE.RUL_SYMBOL) && (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_SEMICOLON)))
{
pNode = new CEmptyStatement();
}
else if (
((stmt_type == STATEMENT_TYPE.STMT_DECL) || (stmt_type == STATEMENT_TYPE.STMT_asic)) &&
((pToken.GetType() == RUL_TOKEN_TYPE.RUL_SYMBOL) && (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_LPAREN))
)
{
pNode = new CExpression();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_DECL) || (stmt_type == STATEMENT_TYPE.STMT_asic)) && pToken.IsDeclaration()) //Declaration Statement
{
pNode = new CDeclaration();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_asic)) &&
(RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType()) &&
!pToken.IsIteration() &&
!pToken.IsFunctionToken())
{
if (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_IF)// IF Selection Statement
{
pNode = new CSelectionStatement();
}
else if (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_SWITCH)//SWITCH Statement
{
pNode = new CSwitchStatement();
}
else if (RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType() &&
RUL_TOKEN_SUBTYPE.RUL_RULE_ENGINE == pToken.GetSubType()) //Rule Statement
{
pNode = new CRuleServiceStatement();
}
else if (RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType() &&
RUL_TOKEN_SUBTYPE.RUL_BREAK == pToken.GetSubType()) //break Statement
{
pNode = new CBreakStatement();
}
else if (RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType() &&
RUL_TOKEN_SUBTYPE.RUL_CONTINUE == pToken.GetSubType()) //continue Statement
{
pNode = new CContinueStatement();
}
else if (RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType() &&
RUL_TOKEN_SUBTYPE.RUL_RETURN == pToken.GetSubType()) //continue Statement
{
pNode = new CReturnStatement();
}
}
else if (((stmt_type == STATEMENT_TYPE.STMT_ITERATION) || (stmt_type == STATEMENT_TYPE.STMT_asic)) && pToken.IsIteration()) //Iteration Statement
{
if (pToken.IsWHILEStatement())
{
pNode = new CIterationStatement();
}
else if (pToken.IsDOStatement())
{
pNode = new CIterationDoWhileStatement();
}
else if (pToken.IsFORStatement())
{
pNode = new CIterationForStatement();
}
}
else if (((stmt_type == STATEMENT_TYPE.STMT_ASSIGNMENT) || (stmt_type == STATEMENT_TYPE.STMT_asic)) && (pToken.IsFunctionToken()))
//Assignment Statement
{
pNode = new CExpression();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_ASSIGNMENT) || (stmt_type == STATEMENT_TYPE.STMT_asic)) &&
(pToken.IsVariable() || pToken.IsArrayVar() || pToken.IsDDItem() ||//Added By Anil August 4 2005
pToken.IsOMToken() || pToken.IsNumeric() ||
pToken.IsConstant() || pToken.IsFunctionToken() || pToken.IsOperator() ||
((pToken.GetType() == RUL_TOKEN_TYPE.RUL_SYMBOL) && (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_LPAREN))
))
//Assignment Statement
{
CToken pNewToken = null; //TSRPRASAD 09MAR2004 Fix the memory leaks */
bool bLineIsAssignment = false;
if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ARITHMETIC_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_PLUS_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_MINUS_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_DIV_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_MOD_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_MUL_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_BIT_AND_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_BIT_OR_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_BIT_XOR_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_BIT_RSHIFT_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_BIT_LSHIFT_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
else if (plexAnal.ScanLineForToken(RUL_TOKEN_TYPE.RUL_ASSIGNMENT_OPERATOR, RUL_TOKEN_SUBTYPE.RUL_ASSIGN, ref pNewToken)) //TSRPRASAD 09MAR2004 Fix the memory leaks */
{
bLineIsAssignment = true;
}
if (bLineIsAssignment)
{
pNode = new CAssignmentStatement();
}
else
{
pNode = new CExpression();
}
}
else if (((stmt_type == STATEMENT_TYPE.STMT_ASSIGNMENT) || (stmt_type == STATEMENT_TYPE.STMT_asic)) && pToken.IsFunctionToken()) //Assignment Statement
{
pNode = new CAssignmentStatement();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_COMPOUND) || (stmt_type == STATEMENT_TYPE.STMT_asic)) && pToken.IsCompound()) //Compound Statement
{
pNode = new CCompoundStatement();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_SERVICE) || (stmt_type == STATEMENT_TYPE.STMT_asic) || (stmt_type == STATEMENT_TYPE.STMT_ASSIGNMENT_FOR)) &&
pToken.IsService()) //Service Statement
{
pNode = new CServiceStatement();
}
else if (((stmt_type == STATEMENT_TYPE.STMT_SELECTION)) && (RUL_TOKEN_TYPE.RUL_KEYWORD == pToken.GetType()))
{
if ((pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_CASE) || (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_DEFAULT))//CASE or DEFAULT Statement
{
pNode = new CCASEStatement();
}
else if (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_ELSE)//ELSE Statement
{
pNode = new CELSEStatement();
}
}
else
{
//error
//the natural control flow is allowed to take care of this
//erroneous condition.
}
}
return(pNode);
}
// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = null;
//try
{
CExpParser expParser;
//Munch a <Var>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) || pToken == null)
{
//throw (C_UM_ERROR_INTERNALERR);
}
if (pToken.IsArrayVar())
{
plexAnal.UnGetToken();
expParser = new CExpParser();
m_pArrayExp = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_LVALUE);
m_bLvalueIsArray = true;
m_pVariable = null;
m_pOMExp = null;
m_pComplexDDExp = null;//Added By Anil August 23 2005
}
//Added By Anil August 4 2005 --starts here
//For Handlin the DD variable and Expressions
else if (pToken.IsDDItem())
{
plexAnal.UnGetToken();
expParser = new CExpParser();
m_pComplexDDExp = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_LVALUE);
m_bLvalueIsComplexDD = true;
m_pArrayExp = null;
m_pVariable = null;
m_pOMExp = null;
}
//Added By Anil August 4 2005 --Ends here
else if (pToken.IsVariable())
{
m_pVariable = pToken;
m_pArrayExp = null;
m_pOMExp = null;
m_pComplexDDExp = null;//Anil August 23 2005
//DELETE_PTR(pToken);
//todo walter
}
else if (pToken.IsOMToken())
{
//do something...
plexAnal.UnGetToken();
m_pOMExp = new COMServiceExpression();
m_pOMExp.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
m_pVariable = null;
m_pArrayExp = null;
m_pComplexDDExp = null;//Anil August 23 2005
}
else
{
//throw (C_AP_ERROR_LVALUE);
}
//DELETE_PTR(pToken); //todo walter
pToken = null;
//Munch a <=> or <*=>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null ||
!pToken.IsAssignOp())
{
//throw (C_AP_ERROR_MISSINGEQ);
}
m_AssignType = pToken.GetSubType();
//Munch & Parse the expression.
//we got to give the expression string to the expression parser.
expParser = new CExpParser();
//try
{
m_pExpression = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_ASSIGN);
if (m_pExpression == null)
{
//throw (C_AP_ERROR_MISSINGEXP);
}
}
/*
* catch (CRIDEError* perr)
* {
* pvecErrors.push_back(perr);
* plexAnal.SynchronizeTo(EXPRESSION, pSymbolTable);
* }
*/
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (RUL_TOKEN_SUBTYPE.RUL_SEMICOLON != pToken.GetSubType()))
{
//throw (C_AP_ERROR_MISSINGSC);
}
return(1);
}
/*
* catch (CRIDEError* perr)
* {
* pvecErrors.push_back(perr);
* plexAnal.SynchronizeTo(EXPRESSION, pSymbolTable);
* }
* catch (...)
* {
* throw (C_UM_ERROR_UNKNOWNERROR);
* }
* return PARSE_FAIL;
*/
}
// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = new CToken();
CToken pSymToken = null;
//try
{
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) || pToken == null)
{
//throw (C_UM_ERROR_INTERNALERR);
}
RUL_TOKEN_SUBTYPE SubType = pToken.GetSubType();
bool lboxState = false;
bool rboxState = false;
bool numState = false;
bool idState = true;
bool commaState = false;
CToken pArrToken = null;
int dimCnt = 0; // stevev 25apr13 - we have to reuse bracket scoped arrays
while ((CLexicalAnalyzer.LEX_FAIL != plexAnal.GetNextVarToken(ref pToken, ref pSymbolTable, SubType)) &&
pToken != null && (!pToken.IsEOS()))
{
int idex = 0;
CVariable cv = pSymbolTable.Find(pToken.GetLexeme(), ref idex);
if (cv != null)
{
pSymToken = cv.Token;
}
if ((!pToken.IsSymbol() && pSymToken != null) ||
(RUL_TOKEN_SUBTYPE.RUL_LBOX == pToken.GetSubType()) ||
(RUL_TOKEN_SUBTYPE.RUL_RBOX == pToken.GetSubType()) ||
(pToken.IsNumeric()))
{
if (pToken.IsArrayVar())
{
lboxState = true;
rboxState = false;
numState = false;
idState = false;
commaState = false;
pSymToken.SetSubType(SubType);
//Make a copy of the array Token
pArrToken = new CToken(pToken);
}
else if (lboxState)
{
if (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_LBOX)
{
//ADD_ERROR(C_DECL_ERROR_LBOX);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
lboxState = false;
rboxState = true;
numState = false;
idState = false;
commaState = false;
}
else if (rboxState)
{
if ((null == pArrToken) || !pToken.IsNumeric())
{
//ADD_ERROR(C_DECL_ERROR_NUM);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
lboxState = false;
rboxState = false;
numState = true;
idState = false;
commaState = false;
//This is a number and with pArrToken get the symbol table token
int i32Idx = pArrToken.GetSymbolTableIndex();
CVariable pVar = pSymbolTable.GetAt(i32Idx);
//INTER_VARIANT varArray = pVar.GetValue();
VARIANT_TYPE vtSafeArray = new VARIANT_TYPE();
//increment the dimension and set the limit of that dimension
if (pVar.GetValue().GetVarType() != VARIANT_TYPE.RUL_SAFEARRAY || dimCnt == 0)// stevev 25apr13
{
// WS:EMP-17jul07:varArray.Clear();
// WS:EMP-17jul07:varArray.varType = RUL_SAFEARRAY;
// WS:EMP-17jul07:__VAL& val = (__VAL&)varArray.GetValue();
// stevev-14feb08:make it more flexible...INTER_SAFEARRAYBOUND rgbound[1] = {atoi(pToken.GetLexeme())};
INTER_SAFEARRAYBOUND rgbound = new INTER_SAFEARRAYBOUND();
rgbound.cElements = Convert.ToUInt32(pToken.GetLexeme());
//INTER_SAFEARRAYBOUND rgbound[1] = { strtoul(pToken->GetLexeme(), NULL, 0) };
INTER_SAFEARRAY sa = new INTER_SAFEARRAY(); // WS:EMP-17jul07 was::>val.prgsa = new INTER_SAFEARRAY();
ushort cDims = 0; // WS:EMP-17jul07 was::>_USHORT cDims = (val.prgsa).GetDims();
TokenType_to_VariantType(pToken.GetType(), SubType, ref vtSafeArray);
// WS:EMP-17jul07 was::>(val.prgsa).SetAllocationParameters(vtSafeArray, ++cDims, rgbound);
sa.SetAllocationParameters(vtSafeArray, ++cDims, rgbound);
sa.Allocate(); // stevev 11jun09 - get rid of error message, destructor will deallocate
//varArray = sa; // added WS:EMP-17jul07
pVar.GetValue().SetValue(sa);
pSymbolTable.SetAt(i32Idx, pVar);
dimCnt = 1;
}
else// isa RUL_SAFEARRAY && dimCnt > 0
{
__VAL val = pVar.GetValue().GetValue();
//INTER_SAFEARRAYBOUND rgbound[1] = { strtoul(pToken.GetLexeme(), NULL, 0) };
INTER_SAFEARRAYBOUND rgbound = new INTER_SAFEARRAYBOUND();
rgbound.cElements = 3;
(val.prgsa).AddDim(rgbound);
dimCnt++;
}
}
else if (numState)
{
if (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_RBOX)
{
//ADD_ERROR(C_DECL_ERROR_RBOX);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
//accept a Right box.
lboxState = true;
rboxState = false;
numState = false;
commaState = true;
idState = false;
}
else
{
if (idState)
{
if (pToken.GetType() != RUL_TOKEN_TYPE.RUL_SIMPLE_VARIABLE)
{
//ADD_ERROR(C_DECL_ERROR_IDMISSING);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
pSymToken.SetSubType(SubType);
}
else
{
//ADD_ERROR(C_DECL_ERROR_COMMAMISSING);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
lboxState = false;
rboxState = false;
numState = false;
idState = false;
commaState = true;
}
}
else if (commaState)
{
if (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_COMMA)
{
//ADD_ERROR(C_DECL_ERROR_COMMAMISSING);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
idState = true;
commaState = false;
lboxState = false;
rboxState = false;
numState = false;
}
else
{
//Of course, this is a problem case.
//Unfortunately, expressions in the declarations are not handled
//ADD_ERROR(C_DECL_ERROR_EXPRESSION);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
//accept a Right box. //VMKP added on 030404
/* Synchronizing was not proper when an expression
* present in the variable declaration, With that the
* below lines one declaration next to the expression
* declaration is skipping */
lboxState = true;
rboxState = false;
numState = false;
commaState = true;
idState = false;
}
}//end of while loop
//Validate the exit criteria...
if (!(rboxState == numState == idState == false) || !(commaState == true))
{
//ADD_ERROR(C_DECL_ERROR_UNKNOWN);
plexAnal.SynchronizeTo(PRODUCTION.DECLARATION, pSymbolTable);
}
return(1);
}
/*
* catch (CRIDEError* perr)
* {
* pvecErrors.push_back(perr);
* plexAnal.MovePast(
* RUL_SYMBOL,
* RUL_SEMICOLON,
* pSymbolTable);
* }
* catch (...)
* {
* throw (C_UM_ERROR_UNKNOWNERROR);
* }
*
* return PARSE_FAIL;
*/
}