public static void MatchVBScriptFunction_T2(ILog log)
{
const string input = "ignorethis obj.Func(1)";
const string funcStr = "obj.Func";
var statementList = new StatementList(log);
var mainComp = TokenComparison.CreateVBScriptFunctionOrVar(null, null, null, null, log);
statementList.Add(new StorePosAsVariable(log, "BeginPos"));
statementList.Add(mainComp);
Action <RunState> InitRunState = (runState) => {
{
var funcIndex = input.IndexOf(funcStr);
IAssertion sub = new PositionAssertion(true, funcIndex, funcIndex + funcStr.Length);
sub.Name = "sub";
runState.AddAssertion("sub", sub);
}
{
var funcIndex = input.IndexOf(funcStr);
IAssertion isEndOrArgList = new PositionAssertion(
true, funcIndex + funcStr.Length, funcIndex + funcStr.Length + 3
);
isEndOrArgList.Name = "IsEndOrArgumentList";
runState.AddAssertion("IsEndOrArgumentList", isEndOrArgList);
}
};
Func <RunState, string, int, string> ReplaceFunc = (runState, _input, pos) => {
var beginPos = (int)runState.GetVariable("BeginPos");
var str = input.Substring(beginPos, pos - beginPos);
return(str);
};
var parser = new Parser(log);
int numMatches;
parser.Extract(input, null, statementList, null, null, out numMatches, ReplaceFunc, InitRunState);
System.Diagnostics.Debug.Assert(numMatches == 1);
}
// From "response.write blah"
// To "response.write(blah)"
public static string AddParenthesisToFunctionCalls(
ILog log,
string input,
out int numMatches,
Action <Action <string, IAssertion> > fCreateAssertList = null)
{
// The parser object that will do the work
Parser parser = new Parser(log);
//// Parser options
// This create a special line wrap
Options parserOptions = TokenComparison.CreateVBScriptParserOptions(log);
CharDelegateComparison isWhitespace = new CharDelegateComparison(log, Char.IsWhiteSpace);
IOperation skipWhitespace = TokenComparison.SkipWhitespace(log);
// State
List <State> stateList = VBScriptState(log, parserOptions);
// The main statement list
StatementList mainStatements = new StatementList(log);
// Capturing
Dictionary <string, Capture> capturing = new Dictionary <string, Capture>();
// Function name capture
Capture funcNameCapture = new Capture(log);
funcNameCapture.Name = "FunctionName";
capturing.Add("funcName", funcNameCapture);
mainStatements.Add(funcNameCapture);
// Function name capture statements
var vbScriptKeywords = TokenComparison.VBScriptKeywords(log, parserOptions);
StatementList funcNameCaptureStatements = new StatementList(log);
funcNameCapture.Comparison = funcNameCaptureStatements;
funcNameCaptureStatements.Exclusion = vbScriptKeywords;
//// Starts with whitespace or is the start of the input string
StartOfInputStringComparison isStartOfString = new StartOfInputStringComparison(log);
OrComparison startsWithWhitespaceOrIsStartOfInputString = new OrComparison(log);
startsWithWhitespaceOrIsStartOfInputString.Add(isStartOfString);
startsWithWhitespaceOrIsStartOfInputString.Add(isWhitespace);
funcNameCaptureStatements.Add(startsWithWhitespaceOrIsStartOfInputString);
// Skip whitespace
funcNameCaptureStatements.Add(skipWhitespace);
//// Function/sub name.
//// For example: class1.Func or class1.Func"string arg"
funcNameCaptureStatements.Add(TokenComparison.CreateVBScriptSub(parserOptions, name: null, log: log));
//// Arguments list
// Skip whitespace and don't capture it
mainStatements.Add(skipWhitespace);
// Capture
Capture argListCapture = new Capture(log);
capturing.Add("funcArgs", argListCapture);
mainStatements.Add(argListCapture);
// Function argument list capture statements
StatementList argListCaptureStatements = new StatementList(log);
argListCapture.Comparison = argListCaptureStatements;
// Skip the line wrap (and capture it)
argListCaptureStatements.Add(parserOptions.SkipLineWrapOperation);
// Concatenated single arguments
// Delimited by whitespace, comma & or +
var vbScriptConcatCommaOrWhitespaceOrEnd =
TokenComparison.CreateVBScriptConcatCommaOrWhitespaceOrEnd(log, parserOptions);
// Numbers
var numberComparison =
TokenComparison.CreateNumber(parserOptions, vbScriptConcatCommaOrWhitespaceOrEnd, "ArgsNumber", log: log);
// VB script quoted strings
var quotedText = TokenComparison.CreateVBScriptQuotedString(parserOptions, name: "Args quoted text", log: log);
// VB script function which could include arguments, or a variable name
var VbScriptFunctionOrVar = TokenComparison.CreateVBScriptFunctionOrVar(
parserOptions,
vbScriptConcatCommaOrWhitespaceOrEnd,
vbScriptKeywords,
"VbScriptFunctionOrVar",
log: log);
// Individual arguments
// Types
OrComparison individualArgumentTypes = new OrComparison(log);
individualArgumentTypes.Add(numberComparison);
individualArgumentTypes.Add(quotedText);
individualArgumentTypes.Add(VbScriptFunctionOrVar);
// List delimiter for the individual arguments
OrComparison vbScriptConcactOrComma = new OrComparison(log);
{
var matchAmpersand = new CharComparison(log, parserOptions, '&');
matchAmpersand.Name = "ArgsStringConcatenation";
vbScriptConcactOrComma.Add(matchAmpersand);
}
vbScriptConcactOrComma.Add(new CharComparison(log, parserOptions, '+'));
var isComma = new CharComparison(log, parserOptions, ',');
vbScriptConcactOrComma.Add(isComma);
DelimitedListComparison individualArgumentList = new DelimitedListComparison(
log, parserOptions, individualArgumentTypes, seperator: vbScriptConcactOrComma
);
individualArgumentList.MinAmount = 1;
individualArgumentList.ItemTrim = skipWhitespace;
// The argument list - comma seperated list of function arguments
DelimitedListComparison argumentList = new DelimitedListComparison(
log, parserOptions, individualArgumentList, seperator: isComma
);
argumentList.Name = "ArgumentList";
argumentList.MinAmount = 1;
argumentList.ItemTrim = skipWhitespace;
argListCaptureStatements.Add(argumentList);
Action <RunState> InitRunState = null;
if (fCreateAssertList != null)
{
InitRunState = (runState) => {
fCreateAssertList(runState.AddAssertion);
};
}
const string replaceWith = "'funcName'('funcArgs')";
string replaced = parser.Replace(
input, replaceWith, mainStatements, capturing, stateList, out numMatches, null, InitRunState
);
return(replaced);
}