// Parses a text-based expression for evaluation.
// The engine sample only supports locals and parameters so the only task here is to check the names in those collections.
int IDebugExpressionContext2.ParseText(string pszCode,
enum_PARSEFLAGS dwFlags,
uint nRadix,
out IDebugExpression2 ppExpr,
out string pbstrError,
out uint pichError)
{
// pbstrError = "";
// pichError = 0;
// ppExpr = null;
// return VSConstants.E_NOTIMPL;
pbstrError = "";
pichError = 0;
ppExpr = null;
// Parse here, if needed: verify if it is a valid expression, and store the parsed results into VariableInfo, or create another object.
// if not: send a GDB command to evaluate the expression pszCode. It should return the result or an error message.
// This object is indirectly sent to IDebugExpression2.EvaluateAsync
// if pszCode is a variable, it must be found in Locals.
// VariableInfo vi = new VariableInfo(pszCode,"","");
ppExpr = new AD7Expression(pszCode, this, m_engine.eDispatcher);
return VSConstants.S_OK;
}
/// <summary>
/// Parses a text-based expression for evaluation. (http://msdn.microsoft.com/en-ca/library/bb162304.aspx).
/// GDB will parse and evaluate the expression, returning the result or an error in the expression. So, the only task for this
/// method is to create the IDebugExpression2 object that will be sent indirectly to the methods responsible for the evaluation.
/// </summary>
/// <param name="pszCode"> The expression to be parsed. </param>
/// <param name="dwFlags"> A combination of flags from the PARSEFLAGS enumeration that controls parsing. </param>
/// <param name="nRadix"> The radix to be used in parsing any numerical information in pszCode. </param>
/// <param name="ppExpr"> Returns the IDebugExpression2 object that represents the parsed expression, which is ready for
/// binding and evaluation. </param>
/// <param name="pbstrError"> Returns the error message if the expression contains an error. </param>
/// <param name="pichError"> Returns the character index of the error in pszCode if the expression contains an error. </param>
/// <returns> VSConstants.S_OK. </returns>
int IDebugExpressionContext2.ParseText(string pszCode,
enum_PARSEFLAGS dwFlags,
uint nRadix,
out IDebugExpression2 ppExpr,
out string pbstrError,
out uint pichError)
{
pbstrError = "";
pichError = 0;
ppExpr = null;
ppExpr = new AD7Expression(pszCode, this, m_engine.eDispatcher);
return VSConstants.S_OK;
}