srcmap

type InstrMapping struct {
	S int32 // start offset in bytes within source (negative when non-existent!)
	L int32 // length in bytes within source (negative when non-existent!)
	F int32 // file index of source (negative when non-existent!)
	J byte  // jump type (i=into, o=out, -=regular)
	M int32 // modifier depth
}

type LineCol struct {
	Line uint32
	Col  uint32
}

type SourceMap struct {
	// source names
	Sources []string
	// per source, source offset -> line/col
	PosData [][]LineCol
	// per bytecode byte, byte index -> instr
	Instr []InstrMapping
}

type SourceMapTracer struct {
	// contains filtered or unexported fields
}