public JSScanner(Context sourceContext)
{
this.IsAuthoring = false;
this.peekModeOn = false;
this.keywords = s_Keywords;
this.preProcessorOn = false;
this.matchIf = 0;
this.ppTable = null;
this.SetSource(sourceContext);
this.currentDocument = null;
this.globals = sourceContext.document.engine.Globals;
}
internal Context(DocumentContext document, String source_string){
this.document = document;
this.source_string = source_string;
this.lineNumber = 1;
this.startLinePos = 0;
this.startPos = 0;
this.endLineNumber = 1;
this.endLinePos = 0;
this.endPos = (source_string == null) ? -1 : source_string.Length;
this.token = JSToken.None;
this.errorReported = 1000000;
}
internal Context(DocumentContext document, string source_string, int lineNumber, int startLinePos, int startPos, int endLineNumber, int endLinePos, int endPos, JSToken token)
{
this.document = document;
this.source_string = source_string;
this.lineNumber = lineNumber;
this.startLinePos = startLinePos;
this.startPos = startPos;
this.endLineNumber = endLineNumber;
this.endLinePos = endLinePos;
this.endPos = endPos;
this.token = token;
this.errorReported = 0xf4240;
}
public JSScanner(){
this.keywords = JSScanner.s_Keywords;
this.strSourceCode = null;
this.startPos = 0;
this.endPos = 0;
this.currentPos = 0;
this.currentLine = 1;
this.startLinePos = 0;
this.currentToken = null;
this.escapedString = null;
this.identifier = new StringBuilder(128);
this.idLastPosOnBuilder = 0;
this.gotEndOfLine = false;
this.IsAuthoring = false;
this.peekModeOn = false;
this.preProcessorOn = false;
this.matchIf = 0;
this.ppTable = null;
this.currentDocument = null;
this.globals = null;
this.scanForDebugger = false;
}
private void PPRemapPositionInfo(){
GetNextToken();
String filename = null; // this.currentToken.document.documentName;
int line = 0;
int col = -1;
bool endDirective = false;
while(JSToken.RightParen != this.currentToken.token){
if (JSToken.Identifier == this.currentToken.token){
if (this.currentToken.Equals("file")){
if (null == this.currentDocument){
if (null == filename){
GetNextToken();
if (JSToken.Assign != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
GetNextToken();
if (JSToken.StringLiteral != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
filename = GetStringLiteral();
if (filename == this.currentToken.document.documentName){
filename = null;
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.CannotNestPositionDirective);
goto ignoreDirective;
}
}else if (this.currentToken.Equals("line")){
if (null == this.currentDocument){
if (line == 0){
GetNextToken();
if (JSToken.Assign != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
GetNextToken();
if (JSToken.IntegerLiteral != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
String number = this.currentToken.GetCode();
double i = Convert.ToNumber(number, true, true, Missing.Value);
if ((double)(int)i == i && i > 0)
line = (int)i;
else{
line = 1;
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.CannotNestPositionDirective);
goto ignoreDirective;
}
}else if (this.currentToken.Equals("column")){
if (null == this.currentDocument){
if (col == -1){
GetNextToken();
if (JSToken.Assign != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
GetNextToken();
if (JSToken.IntegerLiteral != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
String number = this.currentToken.GetCode();
double i = Convert.ToNumber(number, true, true, Missing.Value);
if ((double)(int)i == i && i >= 0)
col = (int)i;
else{
col = 0;
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.CannotNestPositionDirective);
goto ignoreDirective;
}
}else if (this.currentToken.Equals("end")){
// end of the position mapping directive. Put back the old document
if (null != this.currentDocument){
// make sure this is the end of it and if not just go to the end of this directive and ignore it
GetNextToken();
if (JSToken.RightParen != this.currentToken.token){
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}else{
// restore the main document
this.currentToken.document = this.currentDocument;
this.currentDocument = null;
endDirective = true;
break;
}
}else{
// we got an end with no position ever started. Report an error and ignore
HandleError(JSError.WrongDirective);
goto ignoreDirective;
}
}else{
HandleError(JSError.InvalidPositionDirective);
goto ignoreDirective;
}
GetNextToken();
if (JSToken.RightParen == this.currentToken.token)
break;
else if (JSToken.Semicolon == this.currentToken.token)
GetNextToken();
continue;
}
HandleError(JSError.InvalidPositionDirective);
ignoreDirective:
// ignore the directive
while (JSToken.RightParen != this.currentToken.token && JSToken.EndOfFile != this.currentToken.token)
GetNextToken();
break;
}
this.SkipBlanks();
if (';' == GetChar(this.currentPos)){
++this.currentPos;
this.SkipBlanks();
}
// the next char must be an end of line or we skip to it
if (this.currentPos < this.endPos && !IsLineTerminator(GetChar(this.currentPos++), 0)){
HandleError(JSError.MustBeEOL);
while (this.currentPos < this.endPos && !IsLineTerminator(GetChar(this.currentPos++), 0));
}
this.currentLine++;
this.startLinePos = this.currentPos;
// set up or restore the document context
if (!endDirective){
if (null == filename && line == 0 && col == -1)
HandleError(JSError.InvalidPositionDirective);
else{
if (filename == null) filename = this.currentToken.document.documentName;
if (line == 0) line = 1;
if (col == -1) col = 0;
this.currentDocument = this.currentToken.document;
this.currentToken.document = new DocumentContext(filename, line, col, this.currentLine, this.currentDocument.sourceItem);
}
}
}
internal void SetSourceContext(DocumentContext document, string source)
{
this.source_string = source;
this.endPos = source.Length;
this.document = document;
}
private void PPRemapPositionInfo()
{
this.GetNextToken();
string documentName = null;
int startLine = 0;
int startCol = -1;
bool flag = false;
while (JSToken.RightParen != this.currentToken.token)
{
if (JSToken.Identifier != this.currentToken.token)
{
goto Label_0342;
}
if (this.currentToken.Equals("file"))
{
if (this.currentDocument == null)
{
if (documentName == null)
{
this.GetNextToken();
if (JSToken.Assign != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
this.GetNextToken();
if (JSToken.StringLiteral != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
documentName = this.GetStringLiteral();
if (!(documentName == this.currentToken.document.documentName))
{
goto Label_0316;
}
documentName = null;
this.HandleError(JSError.InvalidPositionDirective);
}
}
}
else
{
this.HandleError(JSError.InvalidPositionDirective);
}
}
else
{
this.HandleError(JSError.CannotNestPositionDirective);
}
}
else if (this.currentToken.Equals("line"))
{
if (this.currentDocument == null)
{
if (startLine == 0)
{
this.GetNextToken();
if (JSToken.Assign != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
this.GetNextToken();
if (JSToken.IntegerLiteral != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
double num3 = Microsoft.JScript.Convert.ToNumber(this.currentToken.GetCode(), true, true, Microsoft.JScript.Missing.Value);
if ((((int) num3) == num3) && (num3 > 0.0))
{
startLine = (int) num3;
goto Label_0316;
}
startLine = 1;
this.HandleError(JSError.InvalidPositionDirective);
}
}
}
else
{
this.HandleError(JSError.InvalidPositionDirective);
}
}
else
{
this.HandleError(JSError.CannotNestPositionDirective);
}
}
else if (this.currentToken.Equals("column"))
{
if (this.currentDocument == null)
{
if (startCol == -1)
{
this.GetNextToken();
if (JSToken.Assign != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
this.GetNextToken();
if (JSToken.IntegerLiteral != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
double num4 = Microsoft.JScript.Convert.ToNumber(this.currentToken.GetCode(), true, true, Microsoft.JScript.Missing.Value);
if ((((int) num4) == num4) && (num4 >= 0.0))
{
startCol = (int) num4;
goto Label_0316;
}
startCol = 0;
this.HandleError(JSError.InvalidPositionDirective);
}
}
}
else
{
this.HandleError(JSError.InvalidPositionDirective);
}
}
else
{
this.HandleError(JSError.CannotNestPositionDirective);
}
}
else if (this.currentToken.Equals("end"))
{
if (this.currentDocument != null)
{
this.GetNextToken();
if (JSToken.RightParen != this.currentToken.token)
{
this.HandleError(JSError.InvalidPositionDirective);
goto Label_0355;
}
this.currentToken.document = this.currentDocument;
this.currentDocument = null;
flag = true;
break;
}
this.HandleError(JSError.WrongDirective);
}
else
{
this.HandleError(JSError.InvalidPositionDirective);
}
goto Label_0355;
Label_0316:
this.GetNextToken();
if (JSToken.RightParen == this.currentToken.token)
{
break;
}
if (JSToken.Semicolon == this.currentToken.token)
{
this.GetNextToken();
}
continue;
Label_0342:
this.HandleError(JSError.InvalidPositionDirective);
Label_0355:
while ((JSToken.RightParen != this.currentToken.token) && (this.currentToken.token != JSToken.EndOfFile))
{
this.GetNextToken();
}
break;
}
this.SkipBlanks();
if (';' == this.GetChar(this.currentPos))
{
this.currentPos++;
this.SkipBlanks();
}
if ((this.currentPos < this.endPos) && !this.IsLineTerminator(this.GetChar(this.currentPos++), 0))
{
this.HandleError(JSError.MustBeEOL);
while ((this.currentPos < this.endPos) && !this.IsLineTerminator(this.GetChar(this.currentPos++), 0))
{
}
}
this.currentLine++;
this.startLinePos = this.currentPos;
if (!flag)
{
if (((documentName == null) && (startLine == 0)) && (startCol == -1))
{
this.HandleError(JSError.InvalidPositionDirective);
}
else
{
if (documentName == null)
{
documentName = this.currentToken.document.documentName;
}
if (startLine == 0)
{
startLine = 1;
}
if (startCol == -1)
{
startCol = 0;
}
this.currentDocument = this.currentToken.document;
this.currentToken.document = new DocumentContext(documentName, startLine, startCol, this.currentLine, this.currentDocument.sourceItem);
}
}
}
internal void SetSourceContext(DocumentContext document, string source)
{
this.source_string = source;
this.endPos = source.Length;
this.document = document;
}
