Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

Npicceler
CAssignmentNode	AST node for assignment statements
CASTNode	Abstract Syntax Tree (AST) node base class
CBinaryOpNode	AST node for binary operations (arithmetic and relational)
CCallNode	AST node for function calls
CChainedBrightnessPattern
CChainedInvertPattern
CChainRotatePattern
CCLIOptions	Struct to hold command-line options for the compiler
CCombineNestedCrops	Canonicalization pattern for the CropOp that combines nested crop operations into a single crop operation. only applicable when both crop operations have constant integer coordinates and dimensions
CCompileError	Struct to hold compilation error information
CCompiler	Compiler class that orchestrates the compilation process
CCropToAffine
CElementWiseBinaryOpToAffine
CElementWiseUnaryOpToAffine
CFixedKernelFilterPattern
CForNode	AST node for "for" statements
CFunctionNode	AST node for function definitions
CGenericTypeUpdatePattern	A generic pattern that updates the types of operations based on a provided type converter. Used in KernelToMemref and OpsToFuncCalls passes to ensure that operations have the correct types after type conversion
CIdentityConvolutionPattern
CIfNode	AST node for if conditional statements
CImageAccessHelper	Helper class to generate LLVM IR for accessing fields of the Image struct via an opaque pointer. Assumes the following C++ struct layout: struct Image { uint32_t _width; // Offset 0 uint32_t _height; // Offset 4 unsigned char *_data; // Offset 8 };
CIRPassManager	Wrapper around MLIR PassManager to manage and run passes
CKernelData
CKernelNode	AST node for kernel definitions
CKernelToMemref
CLexer	Lexical analyzer for the picceler programming language
CLoadImageToCall
CLocation	Struct to hold location information
CMLIRGen	MLIR code generator that converts AST nodes to MLIR constructs. This offers the initial IR generation from the AST
CModuleNode	AST node for the entire module
CNeighbourhoodOpsToAffine
CNumberNode	AST node for numeric literals
CParameterizedFilterPattern	Rewrites a filter op whose kernel depends on a single I64 parameter (sharpen's strength, box_blur/gaussian_blur's radius) into a convolution + kernel pair, using staticCalc when the parameter is a compile-time constant and dynamicBuilder otherwise
CParser	That converts tokens into an AST
CPassLogger	Custom struct to log pass execution using spdlog. This struct implements the PassInstrumentation interface to hook into the pass execution lifecycle
CPiccelerAddProfilingPass	A pass that wraps every Picceler compute/IO op with piccelerTraceBegin/piccelerTraceEnd runtime calls. Excludes StringConstOp (instrumentation itself creates these) and ShowImageOp/ ReadNumberOp/ReadStringOp (block on a window/stdin, not compute – one call would swallow every real op's time into invisibility on the timeline), PrintOp (times stdout buffering, not compute), and KernelConstOp (sub-microsecond next to any real op, just adds a row)
CPiccelerFiltersToConvPass	A pass that converts high-level image filter operations (like sharpen, blur, edge detect) into convolution operations with constant kernels
CPiccelerKernelToMemrefPass
CPiccelerOpsToFuncCallsPass	A pass that converts image operations (like load, show, save) into function calls
CPiccelerToAffinePass	A pass that converts Picceler operations to the Affine dialect. This is the crucial step where we lower from our high-level image processing operations to a more explicit representation that can be further lowered to LLVM IR. Each Picceler operation is matched and rewritten into one or more Affine loops that perform the equivalent computation. This pass also handles type conversions and ensures that necessary runtime functions (like piccelerCreateImage) are declared
CPiccelerToLLVMIRPass	A pass that helps convert last pieces of Picceler IR to LLVM IR
CPrintToCalls
CReadNumberToCall
CReadStringToCall
CRemoveInvertPattern
CReturnNode	AST node for "return" statements
CRotateToAffine
CSameOperandPattern	Canonicalization pattern for the BlendOp that replaces blend(img, img, weight) with img if both input images are the same
CSaveImageToCall	Pattern to lower SaveImageOp to a function call
CShowImageToCall	Pattern to lower ShowImageOp to a function call
CStringConstConverter
CStringNode	AST node for string literals
CToken	Represents a token produced by the lexer
CVariableNode	AST node for variable references