compiler

type Argument struct {
	Offset       int
	Register     bool
	Source       string
	Modifier     string /* "lo", "hi", or "" */
	BaseRegister string /* for %lo(sym)(reg) patterns */
}

type AssemblyCommand struct {
	Type      CommandType
	Name      string
	Arguments []Argument
	Ignore    bool /* usually only used for labels, to exclude ones without instructions */
}

type CommandType uint8

type IRKind uint8

type IRNode struct {
	Kind     IRKind
	Op       string    // operator text, function name, literal value, symbol name, cast name
	Operands []*IRNode // sub-expressions
	Body     []*IRNode // then-branch / loop body / function body
	Else     []*IRNode // else branch (IRIf only)
	Comment  string    // inline comment
	IntVal   int       // used by IRFuncBegin, IRReturn (0=false,1=true), IRPCInc
	BoolVal  bool      // used by IRReturn
}

type Options struct {
	Comments   bool
	Trace      bool
	Accurate   bool
	Memory     int
	Mode       string
	MainSymbol string
	Imports    []string
	LogIR      bool
}

type OutputWriter struct {
	Buffer                   []byte            /* the output */
	CurrentLabel             *AssemblyCommand  /* keep track of current label  */
	MemoryDevelopmentPointer int32             /* used when generating code that propagates memory with strings */
	PendingData              PendingData       /* used for remember data across instructions */
	Depth                    int               /* used for indentation */
	MaxPC                    int               /* used for counting PC which is hardcoded in */
	Commands                 []AssemblyCommand /* used to check lines in the future */
	IRNodes                  []*IRNode
	MemoryMap                map[string]int /* map static data keys to addresses */
	// LabelPC is the O(1) label-address cache built by BuildLabelCache.
	// Keyed by label name; value is the same sequential PC index that
	// FindLabelAddress previously computed via a linear scan.
	LabelPC              map[string]int
	Options              Options /* user specified options */
	InstructionTotal     int
	InstructionProcessed int
}

type PendingData struct {
	Type PendingDataType
	Data string
}

type PendingDataType int8