/// <summary>
/// Allocates a source location that falls inside a region of text that originally came from another source document.
/// </summary>
/// <param name="document">A document with a region of text that orignally came from another source document.</param>
/// <param name="startIndex">The character index of the first character of this location, when treating the source document as a single string.</param>
/// <param name="length">The number of characters in this source location.</param>
internal IncludedSourceLocation(SourceDocumentWithInclusion document, int startIndex, int length)
//^ requires startIndex >= 0 && (startIndex < document.Length || startIndex == 0);
//^ requires length >= 0 && length <= document.Length;
//^ requires (startIndex + length) <= document.Length;
{
this.sourceDocument = document;
this.startIndex = startIndex;
this.length = length;
}
/// <summary>
/// Allocates a source location that falls inside a region of text that originally came from another source document.
/// </summary>
/// <param name="document">A document with a region of text that orignally came from another source document.</param>
/// <param name="startIndex">The character index of the first character of this location, when treating the source document as a single string.</param>
/// <param name="length">The number of characters in this source location.</param>
internal IncludedSourceLocation(SourceDocumentWithInclusion document, int startIndex, int length) {
Contract.Requires(document != null);
Contract.Requires(startIndex >= 0 && (startIndex < document.Length || startIndex == 0));
Contract.Requires(length >= 0 && length <= document.Length);
Contract.Requires((startIndex + length) <= document.Length);
this.sourceDocument = document;
this.startIndex = startIndex;
this.length = length;
}
internal PreprocessorInformation(IPrimarySourceDocument newDocumentToPreprocess, PreprocessorInformation template)
{
this.sourceDocument = newDocumentToPreprocess;
SourceDocumentWithInclusion/*?*/ sourceOfInclusion = null;
List<Directive> directives = new List<Directive>(template.Directives);
List<IErrorMessage> errors = new List<IErrorMessage>(template.errors);
List<ISourceLocation> excludedLocations = new List<ISourceLocation>(template.ExcludedLocations);
List<ISourceLocation> includedLocations = new List<ISourceLocation>(template.IncludedLocations);
for (int i = 0, n = directives.Count; i < n; i++) {
//^ assume newDocumentToPreprocess.IsUpdatedVersionOf(directives[i].SourceLocation.SourceDocument);
directives[i] = directives[i].MakeShallowCopy(newDocumentToPreprocess);
}
for (int i = 0, n = errors.Count; i < n; i++) {
ISourceErrorMessage/*?*/ sourceError = errors[i] as ISourceErrorMessage;
//^ assume sourceError != null;
//^ assume newDocumentToPreprocess.IsUpdatedVersionOf(sourceError.SourceLocation.SourceDocument);
errors[i] = sourceError.MakeShallowCopy(newDocumentToPreprocess);
}
for (int i = 0, n = excludedLocations.Count; i < n; i++) {
ISourceLocation excludedLocation = excludedLocations[i];
SourceDocumentWithInclusion/*?*/ idoc = excludedLocation.SourceDocument as SourceDocumentWithInclusion;
if (idoc != null) {
if (sourceOfInclusion == null || !idoc.IsUpdatedVersionOf(sourceOfInclusion))
sourceOfInclusion = new SourceDocumentWithInclusion(newDocumentToPreprocess, idoc.OriginalLineNumber, idoc.OriginalDocumentName, idoc.StartingPositionOfIncludedRegion);
excludedLocations[i] = sourceOfInclusion.GetCorrespondingSourceLocation(excludedLocation);
} else {
//^ assume newDocumentToPreprocess.IsUpdatedVersionOf(excludedLocation.SourceDocument);
excludedLocations[i] = newDocumentToPreprocess.GetCorrespondingSourceLocation(excludedLocation);
}
}
for (int i = 0, n = includedLocations.Count; i < n; i++) {
ISourceLocation includedLocation = includedLocations[i];
SourceDocumentWithInclusion/*?*/ idoc = includedLocation.SourceDocument as SourceDocumentWithInclusion;
if (idoc != null) {
if (sourceOfInclusion == null || !idoc.IsUpdatedVersionOf(sourceOfInclusion))
sourceOfInclusion = new SourceDocumentWithInclusion(newDocumentToPreprocess, idoc.OriginalLineNumber, idoc.OriginalDocumentName, idoc.StartingPositionOfIncludedRegion);
includedLocations[i] = sourceOfInclusion.GetCorrespondingSourceLocation(includedLocation);
} else {
//^ assume newDocumentToPreprocess.IsUpdatedVersionOf(includedLocation.SourceDocument);
includedLocations[i] = newDocumentToPreprocess.GetCorrespondingSourceLocation(includedLocation);
}
}
this.directives = directives;
this.errors = errors;
this.excludedLocations = excludedLocations;
this.includedLocations = includedLocations;
}
//^ requires startIndex >= 0 && (startIndex < document.Length || startIndex == 0);
//^ requires length >= 0 && length <= document.Length;
//^ requires (startIndex + length) <= document.Length;
/// <summary>
/// Allocates a source location that falls inside a region of text that originally came from another source document.
/// </summary>
/// <param name="document">A document with a region of text that orignally came from another source document.</param>
/// <param name="startIndex">The character index of the first character of this location, when treating the source document as a single string.</param>
/// <param name="length">The number of characters in this source location.</param>
internal IncludedSourceLocation(SourceDocumentWithInclusion document, int startIndex, int length)
{
this.sourceDocument = document;
this.startIndex = startIndex;
this.length = length;
}
//^ requires this.fragmentIndex > 0;
//^ ensures this.startOfCurrentLine == this.fragmentIndex;
/// <summary>
/// Parses a #line directive, starting at the character following "line".
/// Adds a LineDirective instance to this.preprocesorInformation.
/// Leaves this.fragmentIndex pointing to the start of the first line after the line containing the #line directive.
/// </summary>
private void ParseLine(bool include)
{
this.SkipBlanks();
int? lineNumber = null;
string/*?*/ documentName = null;
string docName;
this.errorIndex = this.fragmentIndex;
char c = this.GetCurrentChar();
if (c == 'd') {
string d = this.ScanDirective();
if (d != "default") {
//^ assume this.fragmentIndex > this.errorIndex;
this.HandleError(Error.PPDirectiveExpected);
}
this.sourceOfInclusion = null;
} else {
if (!Scanner.IsDigit(c)) {
if (this.fragmentIndex == this.fragmentLength)
this.errorIndex = fragmentIndex -1;
else
this.fragmentIndex++;
this.HandleError(Error.InvalidLineNumber);
} else
lineNumber = this.originalLineNumber = this.ScanNumber();
}
this.SkipBlanks();
if (this.GetCurrentChar() == '"') {
documentName = docName = this.ScanString('"');
} else {
docName = this.documentToProcess.Name.Value;
if (this.sourceOfInclusion != null) docName = this.sourceOfInclusion.Name.Value;
}
if (include) {
//^ assume this.fragmentIndex > this.startOfCurrentLine;
LineDirective lineDirective = new LineDirective(lineNumber, documentName, this.GetSourceLocation(this.startOfCurrentLine, this.fragmentIndex-this.startOfCurrentLine));
this.preprocessorInformation.directives.Add(lineDirective);
}
//^ assume this.fragmentIndex <= this.fragmentLength;
this.SkipPastBlanksCommentAndNewLine();
this.sourceOfInclusion = new SourceDocumentWithInclusion(this.documentToProcess, this.originalLineNumber, docName, this.offset+this.startOfCurrentLine);
}
