// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = null;
//try
{
//Munch a <SWITCH>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_SWITCH))
{
//throw (C_UM_ERROR_INTERNALERR);
}
//Munch a <(>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_LPAREN))
{
//ADD_ERROR(C_IF_ERROR_MISSINGLP);
plexAnal.UnGetToken();
}
//Munch & Parse the expression.
//we got to give the expression string to the expression parser.
//
CParserBuilder builder2 = new CParserBuilder();
CExpParser expParser = new CExpParser();
CGrammarNode pNode = null;
pNode = builder2.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
m_pExpression = null;
m_pExpressionStatement = null;
if (null != pNode)
{
expressionNodeType = pNode.GetNodeType();
if (expressionNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN)
{
expressionNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN;
m_pExpressionStatement = (CAssignmentStatement)pNode;
m_pExpressionStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable, STATEMENT_TYPE.STMT_ASSIGNMENT_FOR);
}
else if (expressionNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION)
{
expressionNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION;
m_pExpression = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_FOR);
if (m_pExpression == null)
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGEXP);
}
}
}
else
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGSTMT);
}
//Munch a <)>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_RPAREN))
{
//ADD_ERROR(C_IF_ERROR_MISSINGRP);
plexAnal.UnGetToken();
}
//Munch a <{>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_LBRACK))
{
//ADD_ERROR(C_IF_ERROR_MISSINGRP);
plexAnal.UnGetToken();
}
//See if you can snatch a "case"
CParserBuilder builder = new CParserBuilder();
int iNumberOfCaseStatements = 0;
m_pCase[iNumberOfCaseStatements] = (CCASEStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_SELECTION);
while (null != (m_pCase[iNumberOfCaseStatements]))
{
m_pCase[iNumberOfCaseStatements].CreateParseSubTree(ref plexAnal, ref pSymbolTable);
if (m_pCase[iNumberOfCaseStatements].IsDefaultStatement())
{
m_bIsDefaultPresent = true;
m_pDefaultCase = m_pCase[iNumberOfCaseStatements];
}
else
{
iNumberOfCaseStatements++;
}
m_pCase[iNumberOfCaseStatements] = (CCASEStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_SELECTION);
}
m_iNumberOfCasesPresent = iNumberOfCaseStatements;
//Munch a <}>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || (pToken.GetSubType() != RUL_TOKEN_SUBTYPE.RUL_RBRACK))
{
//ADD_ERROR(C_IF_ERROR_MISSINGRP);
plexAnal.UnGetToken();
}
/* VMKP Commented on 140404, For INOR device
* Sensor selection method is crashing with this Fix */
/* if (pNode) //TSRPRASAD 09MAR2004 Fix the memory leaks
* {
* delete pNode;
* pNode = null;
* }*/
/* VMKP Commented on 140404 */
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;
*/
}
// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = null;
//try
{
//Munch a <DO>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !pToken.IsDOStatement())
{
//throw (C_UM_ERROR_INTERNALERR);
}
//Munch a Statement...
CParserBuilder builder = new CParserBuilder();
m_pStatement = (CStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
if (null != (m_pStatement))
{
m_pStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
}
else
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGSTMT);
}
//Munch a <WHILE>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !pToken.IsWHILEStatement())
{
//throw (C_UM_ERROR_INTERNALERR);
}
//Munch a <(>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !(pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_LPAREN))
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGLP);
plexAnal.UnGetToken();
}
//Munch & Parse the expression.
//we got to give the expression string to the expression parser.
//
CParserBuilder builder2 = new CParserBuilder();
CExpParser expParser = new CExpParser();
CGrammarNode pNode = null; //TSRPRASAD 09MAR2004 Fix the memory leaks */
pNode = builder2.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
m_pExpression = null;
m_pExpressionStatement = null;
if (null != pNode)
{
expressionNodeType = pNode.GetNodeType();
if (expressionNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN)
{
expressionNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN;
m_pExpressionStatement = (CAssignmentStatement)pNode;
m_pExpressionStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable, STATEMENT_TYPE.STMT_ASSIGNMENT_FOR);
}
else if (expressionNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION)
{
expressionNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION;
m_pExpression = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_FOR);
if (m_pExpression == null)
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGEXP);
}
}
}
else
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGSTMT);
}
//Munch a <)>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !(pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_RPAREN))
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGRP);
plexAnal.UnGetToken();
}
//Munch a <;>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !(pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_SEMICOLON))
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGRP);
plexAnal.UnGetToken();
}
/*<START>TSRPRASAD 09MAR2004 Fix the memory leaks */
/*<END>TSRPRASAD 09MAR2004 Fix the memory leaks */
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;
*/
}