// 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;
*/
}