Function HandleIncludeDirective

Source/SpireCore/Preprocessor.cpp:1361–1392

Handle a `#include` directive

// Handle a `#include` directive
static void HandleIncludeDirective(PreprocessorDirectiveContext* context)
{
    Token pathToken;
    if(!Expect(context, TokenType::StringLiterial, Diagnostics::expectedTokenInPreprocessorDirective, &pathToken))
        return;
    String path = pathToken.Content;

    // TODO(tfoley): make this robust in presence of `#line`
    String pathIncludedFrom = GetDirectiveLoc(context).FileName;
    String foundPath;
    String foundSource;


    IncludeHandler* includeHandler = context->preprocessor->includeHandler;
    if (!includeHandler)
    {
        GetSink(context)->diagnose(pathToken.Position, Diagnostics::includeFailed, path);
        GetSink(context)->diagnose(pathToken.Position, Diagnostics::noIncludeHandlerSpecified);
        return;
    }
    if (!includeHandler->TryToFindIncludeFile(path, pathIncludedFrom, &foundPath, &foundSource))
    {
        GetSink(context)->diagnose(pathToken.Position, Diagnostics::includeFailed, path);
        return;
    }

    // Push the new file onto our stack of input streams
    // TODO(tfoley): check if we have made our include stack too deep
    PreprocessorInputStream* inputStream = CreateInputStreamForSource(context->preprocessor, foundSource, foundPath);
    inputStream->parent = context->preprocessor->inputStream;
    context->preprocessor->inputStream = inputStream;
}

// Handle a `#define` directive
static void HandleDefineDirective(PreprocessorDirectiveContext* context)