/// <summary>
/// Parses a #region-#endregion directive, starting at the character following "region".
/// Adds a corresponding RegionDirective instance to this.preprocesorInformation.
/// Leaves this.fragmentIndex pointing to the start of the first line after the matching #endif directive.
/// Returns all source locations that are to be included in the preprocessor output. (No locations are returned if the include parameter is false.)
/// </summary>
/// <param name="include">True if the directive is part of an included block. If false, the directive is parsed but ignored. (No locations are returned.)</param>
private IEnumerable<ISourceLocation> ParseRegion(bool include) {
SourceLocationBuilder slb = new SourceLocationBuilder(this.GetSourceLocation(this.startOfCurrentLine, this.fragmentIndex-this.startOfCurrentLine));
string label = this.ScanMessage();
RegionDirective regionDirective = new RegionDirective(label, slb);
this.preprocessorInformation.directives.Add(regionDirective);
foreach (ISourceLocation includedSourceFragment in this.ParseSection(false, false, true, include, false))
yield return includedSourceFragment;
slb.UpdateToSpan(this.GetSourceLocation(this.fragmentIndex-1, 0));
}
public override object/*?*/ Resolve() {
if (this.rootClass != null) {
FieldDefinition/*?*/ localField = null;
this.rootClass.localFieldFor.TryGetValue(this.Name.UniqueKeyIgnoringCase, out localField);
if (localField != null) return localField;
}
object/*?*/ binding = base.Resolve();
if (binding == null && this.expressionToInferTargetTypeFrom != null) {
SourceLocationBuilder slb = new SourceLocationBuilder(this.SourceLocation);
slb.UpdateToSpan(this.expressionToInferTargetTypeFrom.SourceLocation);
return this.rootClass.AddFieldForLocal(this, this.expressionToInferTargetTypeFrom, slb).FieldDefinition;
}
return binding;
}
/// <summary>
/// Parses the #if part of an #if-#elif-#else-#endif construct, starting at the character following "if".
/// Adds a corresponding IfDirective instance to this.preprocesorInformation.
/// Leaves this.fragmentIndex pointing to the start of the first line after the matching #endif directive.
/// Returns all source locations that are to be included in the preprocessor output. (No locations are returned if the include parameter is false.)
/// </summary>
/// <param name="include">True if the directive is part of an included block. If false, the directive is parsed but ignored. (No locations are returned.)</param>
private IEnumerable<ISourceLocation> ParseIf(bool include) {
SourceLocationBuilder slb = new SourceLocationBuilder(this.GetSourceLocation(this.startOfCurrentLine, this.fragmentIndex-this.startOfCurrentLine));
Expression condition = this.ParseExpression();
IfDirective ifDirective = new IfDirective(condition, slb);
this.preprocessorInformation.directives.Add(ifDirective);
this.SkipPastBlanksCommentAndNewLine();
bool allowElseToInclude = include;
if (include) {
include = condition.IsDefined(this.preprocessorDefinedSymbols);
if (include)
allowElseToInclude = false;
}
foreach (ISourceLocation includedSourceFragment in this.ParseSection(true, true, false, include, allowElseToInclude))
yield return includedSourceFragment;
slb.UpdateToSpan(this.GetSourceLocation(this.fragmentIndex-1, 0));
}