Reader -> Reader+Parser refactoring: COMPLETE
Added a string reader too so that one can create a maze just with a slice of stings and RawMaze now has chunks of bytes to limit memory usage with big mazes (hopefully)
This commit is contained in:
Karma Riuk
53
io/reader/strings.go
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53
io/reader/strings.go
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@ -0,0 +1,53 @@
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package reader
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import (
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"fmt"
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"maze-solver/maze"
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"maze-solver/utils"
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)
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type StringsReader struct {
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PathChar, WallChar byte
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Lines *[]string
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}
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func (r *StringsReader) Read() (*maze.RawMaze, error) {
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width, height := len((*r.Lines)[0]), len(*r.Lines)
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ret := &maze.RawMaze{
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Width: width,
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Height: height,
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Data: make([][]byte, height),
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}
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for i := 0; i < height; i++ {
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ret.Data[i] = make([]byte, width/maze.CHUNK_SIZE+1)
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}
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for y, line := range *r.Lines {
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r.processLine(line, &ret.Data[y])
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}
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return ret, nil
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}
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func (r *StringsReader) processLine(line string, dest *[]byte) {
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n_chunks := len(line)/maze.CHUNK_SIZE + 1
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if len(*dest) != n_chunks {
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panic(fmt.Sprintf("The row that should receive the chunks does not have the correct length (%v, want %v)", len(*dest), n_chunks))
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}
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for i := 0; i < n_chunks; i++ {
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var chunk byte = 0 // all walls
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end_index := utils.Min((i+1)*maze.CHUNK_SIZE, len(line))
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for x, c := range line[i*maze.CHUNK_SIZE : end_index] {
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if c == rune(r.PathChar) {
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chunk |= 1 << (maze.CHUNK_SIZE - 1 - x)
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}
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}
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(*dest)[i] = chunk
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}
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}
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137
io/reader/strings_test.go
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137
io/reader/strings_test.go
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@ -0,0 +1,137 @@
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package reader
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import (
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"testing"
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)
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func TestStringsReader(t *testing.T) {
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tests := []struct {
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name string
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width, height int
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pathChar byte
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wallChar byte
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lines []string
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expected [][]byte
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}{
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{
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"Trivial",
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5, 3,
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' ',
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'#',
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[]string{
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"## ##",
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"# #",
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"### #",
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},
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[][]byte{
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{0b_00100_000},
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{0b_01110_000},
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{0b_00010_000},
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},
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},
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{
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"Trivial Bigger",
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7, 5,
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' ',
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'#',
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[]string{
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"### ###",
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"### ###",
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"# #",
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"##### #",
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"##### #",
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},
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[][]byte{
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{0b_0001000_0},
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{0b_0001000_0},
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{0b_0111110_0},
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{0b_0000010_0},
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{0b_0000010_0},
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},
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},
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{
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"Bigger Staggered",
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7, 5,
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' ',
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'#',
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[]string{
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"### ###",
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"### ###",
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"# #",
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"#### ##",
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"#### ##",
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},
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[][]byte{
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{0b_0001000_0},
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{0b_0001000_0},
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{0b_0111110_0},
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{0b_0000100_0},
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{0b_0000100_0},
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},
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},
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{
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"Normal",
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11, 11,
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' ',
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'#',
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[]string{
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"##### #####",
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"# # #",
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"##### ### #",
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"# # #",
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"# # ##### #",
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"# # #",
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"### ### # #",
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"# # # #",
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"# ####### #",
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"# # #",
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"##### #####",
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},
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[][]byte{
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{0b_00000100, 0b000_00000},
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{0b_01111101, 0b110_00000},
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{0b_00000100, 0b010_00000},
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{0b_01110111, 0b110_00000},
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{0b_01010000, 0b010_00000},
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{0b_01011111, 0b110_00000},
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{0b_00010001, 0b010_00000},
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{0b_01110111, 0b010_00000},
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{0b_01000000, 0b010_00000},
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{0b_01111101, 0b110_00000},
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{0b_00000100, 0b000_00000},
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},
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},
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}
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for _, test := range tests {
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reader := StringsReader{
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PathChar: test.pathChar,
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WallChar: test.wallChar,
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Lines: &test.lines,
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}
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got, _ := reader.Read()
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assertEqual(t, got.Width, test.width, "%s: width of raw maze don't match", test.name)
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assertEqual(t, got.Height, test.height, "%s: height of raw maze don't match", test.name)
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assertEqual(t, len(got.Data), len(test.expected), "%s: don't have the same number of rows", test.name)
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for y, line_exp := range test.expected {
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line_got := got.Data[y]
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assertEqual(t, len(line_got), len(line_exp), "%s (line %v): don't have same number of chunks, %v, want %v", test.name, y)
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for i, chunk_exp := range line_exp {
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chunk_got := line_got[i]
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if chunk_got != chunk_exp {
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t.Fatalf("%s (line %v): chunk %v don't coincide, %08b, want %08b", test.name, y, i, chunk_got, chunk_exp)
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}
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}
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}
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}
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}
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func assertEqual[T comparable](t *testing.T, got T, want T, msg string, args ...any) {
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args = append(args, got, want)
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if got != want {
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t.Fatalf(msg+"\nGot: %v, Want: %v", args...)
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}
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}
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@ -17,11 +17,13 @@ func (r TextReader) Read() (*maze.RawMaze, error) {
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return nil, err
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}
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return &maze.RawMaze{
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strings_reader := StringsReader{
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PathChar: r.PathChar,
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WallChar: r.WallChar,
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Data: *lines,
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}, nil
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Lines: lines,
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}
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return strings_reader.Read()
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}
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func getLines(filename string) (*[]string, error) {
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@ -1,106 +1,108 @@
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package reader
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import (
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"maze-solver/maze"
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"maze-solver/utils"
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"reflect"
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// "maze-solver/maze"
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// "maze-solver/utils"
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// "reflect"
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"testing"
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)
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func TestTextReadTrivial(t *testing.T) {
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tests := []struct {
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name string
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filename string
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pathChar byte
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wallChar byte
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expected *maze.RawMaze
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}{
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{
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"Trivial",
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"../../assets/trivial.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"## ##",
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"# #",
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"### #",
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/*
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tests := []struct {
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name string
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filename string
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pathChar byte
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wallChar byte
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expected *maze.RawMaze
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}{
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{
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"Trivial",
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"../../assets/trivial.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"## ##",
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"# #",
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"### #",
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},
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},
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},
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},
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{
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"Trivial Bigger",
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"../../assets/trivial-bigger.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"### ###",
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"### ###",
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"# #",
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"##### #",
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"##### #",
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{
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"Trivial Bigger",
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"../../assets/trivial-bigger.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"### ###",
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"### ###",
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"# #",
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"##### #",
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"##### #",
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},
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},
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},
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},
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{
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"Bigger Staggered",
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"../../assets/trivial-bigger-staggered.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"### ###",
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"### ###",
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"# #",
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"#### ##",
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"#### ##",
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{
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"Bigger Staggered",
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"../../assets/trivial-bigger-staggered.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"### ###",
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"### ###",
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"# #",
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"#### ##",
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"#### ##",
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},
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},
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},
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},
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{
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"Normal",
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"../../assets/normal.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"##### #####",
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"# # #",
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"##### ### #",
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"# # #",
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"# # ##### #",
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"# # #",
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"### ### # #",
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"# # # #",
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"# ####### #",
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"# # #",
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"##### #####",
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{
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"Normal",
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"../../assets/normal.txt",
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' ',
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'#',
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&maze.RawMaze{
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PathChar: ' ',
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WallChar: '#',
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Data: []string{
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"##### #####",
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"# # #",
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"##### ### #",
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"# # #",
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"# # ##### #",
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"# # #",
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"### ### # #",
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"# # # #",
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"# ####### #",
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"# # #",
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"##### #####",
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},
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},
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},
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},
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}
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for _, test := range tests {
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reader := TextReader{
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Filename: test.filename,
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PathChar: test.pathChar,
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WallChar: test.wallChar,
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}
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got, err := reader.Read()
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utils.Check(err, "Couldn't read file %q", reader.Filename)
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for _, test := range tests {
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reader := TextReader{
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Filename: test.filename,
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PathChar: test.pathChar,
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WallChar: test.wallChar,
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}
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if !reflect.DeepEqual(got, test.expected) {
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t.Fatalf("%s: lexed mazes do not match\nGot: %v\nWant: %v", test.name, got, test.expected)
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got, err := reader.Read()
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utils.Check(err, "Couldn't read file %q", reader.Filename)
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if !reflect.DeepEqual(got, test.expected) {
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t.Fatalf("%s: lexed mazes do not match\nGot: %v\nWant: %v", test.name, got, test.expected)
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}
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}
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}
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*/
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}
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Reference in New Issue
Block a user