Function HandleIfDirective

Source/SpireCore/Preprocessor.cpp:1229–1236

Handle a `#if` directive

// Handle a `#if` directive
static void HandleIfDirective(PreprocessorDirectiveContext* context)
{
    // Parse a preprocessor expression.
    PreprocessorExpressionValue value = ParseAndEvaluateExpression(context);

    // Begin a preprocessor block, enabled based on the expression.
    BeginConditional(context, value != 0);
}

// Handle a `#ifdef` directive
static void HandleIfDefDirective(PreprocessorDirectiveContext* context)