// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = null;
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !pToken.IsELSEStatement())
{
//throw (C_UM_ERROR_INTERNALERR);
}
//Look for a statement
CParserBuilder builder = new CParserBuilder();
m_pStatement = (CStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
if (null != (m_pStatement))
{
int i32Ret = m_pStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
if (i32Ret == 0)
{
//ADD_ERROR(C_ES_ERROR_MISSINGSTMT);
}
else
{
return(1);
}
}
return(0);
}
// Create as much of the parse tree as possible.
public override int CreateParseSubTree(ref CLexicalAnalyzer plexAnal, ref CSymbolTable pSymbolTable)
{
CToken pToken = null;
{
//Munch a <IF>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !pToken.IsIFStatement())
{
//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.
//
CExpParser expParser = new CExpParser();
//try
{
m_pExpression = expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_IF);
if (m_pExpression == null)
{
//ADD_ERROR(C_IF_ERROR_MISSINGEXP);
}
}
//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();
}
//Eat a Statement...
CParserBuilder builder = new CParserBuilder();
m_pStatement = (CStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
if (null != m_pStatement)
{
int i32Ret = m_pStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
if (i32Ret == 0)
{
//ADD_ERROR(C_IF_ERROR_MISSINGSTMT);
}
}
else
{
//ADD_ERROR(C_IF_ERROR_MISSINGSTMT);
}
//See if you can snatch a "else"
try
{
m_pElse = (CELSEStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_SELECTION);
if (null != m_pElse)
{
m_pElse.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
}
}
catch (Exception ex)
{
string exinfo = ex.Message;
//return 0;
}
return(1);
}
}
public virtual int visitStatement(CStatement pStatement, CSymbolTable pSymbolTable,
ref INTER_VARIANT pvar, RUL_TOKEN_SUBTYPE AssignType = RUL_TOKEN_SUBTYPE.RUL_ASSIGN) //Anil August 26 2005 to Fix a[exp1] += exp2
{
return(0);
}
// 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 <FOR>
if ((CLexicalAnalyzer.LEX_FAIL == plexAnal.GetNextToken(ref pToken, ref pSymbolTable)) ||
pToken == null || !pToken.IsFORStatement())
{
//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 a Initialization Statement...
CParserBuilder builder = new CParserBuilder();
m_pInitializationStatement = (CAssignmentStatement)builder.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
if (null != (m_pInitializationStatement))
{
m_pInitializationStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable);
}
else
{
//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_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;
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_asic);
}
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 if (expressionNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_INVALID)
{
pToken = null;
//try
{
if ((CLexicalAnalyzer.LEX_FAIL != (plexAnal.LookAheadToken(ref pToken))) && pToken != null)
{
if ((pToken.GetType() == RUL_TOKEN_TYPE.RUL_SYMBOL) && (pToken.GetSubType() == RUL_TOKEN_SUBTYPE.RUL_SEMICOLON))
{
// This code is to handle for(;;) for Yokagawa EJX
expressionNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION;
CToken pToken2 = new CToken("1");
pToken2.SetType(RUL_TOKEN_TYPE.RUL_NUMERIC_CONSTANT);
m_pExpression = new CPrimaryExpression(pToken2);
}
}
}
/*
* catch (...)
* {
* }
*/
}
}
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_SEMICOLON))
{
//ADD_ERROR(C_WHILE_ERROR_MISSINGLP);
plexAnal.UnGetToken();
}
//Munch a Increment Statement...
pNode = builder2.CreateParser(ref plexAnal, STATEMENT_TYPE.STMT_asic);
m_pIncrementExpression = null;
m_pIncrementStatement = null;
if (null != pNode)
{
incrementNodeType = pNode.GetNodeType();
if (incrementNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN)
{
incrementNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_ASSIGN;
m_pIncrementStatement = (CAssignmentStatement)pNode;
m_pIncrementStatement.CreateParseSubTree(ref plexAnal, ref pSymbolTable, STATEMENT_TYPE.STMT_ASSIGNMENT_FOR);
}
else if (incrementNodeType == GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION)
{
incrementNodeType = GRAMMAR_NODE_TYPE.NODE_TYPE_EXPRESSION;
m_pIncrementExpression
= expParser.ParseExpression(ref plexAnal, ref pSymbolTable, STMT_EXPR_TYPE.EXPR_FOR);
if (m_pIncrementExpression == 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_MISSINGLP);
plexAnal.UnGetToken();
}
//Munch the statement
CParserBuilder builder3 = 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);
}
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 <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;
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_WHILE);//Vibhor 150305: Changed from 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 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);
}
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;
*/
}
