ShaderCompiler::Preprocessor class
#include <derCompiler/ShaderParser.h>

Object-like macro preprocessor used to produce the per-variant declaration stream for reflection.

Public functions

void Define(StringView name, StringView body)
auto Run(const std::vector<SourceLine>& input, std::vector<SourceLine>& output, Diagnostic& diag) -> bool
auto IsDefined(StringView name) const -> bool
auto TryGetMacroBody(StringView name, String& body) const -> bool
auto EvaluateExpression(StringView expression, std::int32_t line, std::int32_t depth, std::int64_t& value, Diagnostic& diag) const -> bool

Predefines an object-like macro (used to bake variant defines, e.g. DITHER=1)

Runs the preprocessor, appending active (macro-expanded) lines to output

Returns true if the macro is defined (BATCH_SIZE always reports as defined)

Retrieves the body of a defined object-like macro, returns false if not defined or function-like

Evaluates a if/elif integer constant expression