// initGameSession if a load file exists load the old game otherwise
// create a new game session.
func initGameSession(a *area.Area) (sav *save.Save, err error) {
path, err := goutil.SrcDir("github.com/karlek/reason/")
if err != nil {
return nil, errutil.Err(err)
}
sav, err = save.New(path + "debug.save")
if err != nil {
return nil, errutil.Err(err)
}
err = initGameLibs()
if err != nil {
return nil, errutil.Err(err)
}
// If save exists load old game session.
// Otherwise create a new game session.
if sav.Exists() {
err = load(sav, a)
} else {
err = newGame(a)
}
if err != nil {
return nil, errutil.Err(err)
}
// Initalize turn priority queue.
turn.Init(a)
return sav, nil
}
func init() {
dir, err := goutil.SrcDir("github.com/karlek/seer/cmd/alpha")
if err != nil {
log.Fatalln(err)
}
filename = path.Join(dir, "alpha.json")
}
// parseSubs parses the graph representations of the given high-level control
// flow primitives. If unable to locate a subgraph, a second attempt is made by
// prepending $GOPATH/src/decomp.org/decomp/cmd/restructure/primitives/ to the
// subgraph path.
func parseSubs(subPaths []string) (subs []*graphs.SubGraph, err error) {
// Prepend $GOPATH/src/decomp.org/decomp/cmd/restructure/primitives/ to the path
// of missing subgraphs.
subDir, err := goutil.SrcDir("decomp.org/decomp/cmd/restructure/primitives")
if err != nil {
return nil, errutil.Err(err)
}
for i, subPath := range subPaths {
if ok, _ := osutil.Exists(subPath); !ok {
subPath = filepath.Join(subDir, subPath)
subPaths[i] = subPath
}
}
// Parse subgraphs representing control flow primitives.
for _, subPath := range subPaths {
sub, err := graphs.ParseSubGraph(subPath)
if err != nil {
return nil, errutil.Err(err)
}
subs = append(subs, sub)
}
return subs, nil
}
// locate parses the provided graphs and tries to locate isomorphisms of the
// subgraph in the graph.
func locate(graphPath, subPath string) error {
// Parse graph.
graph, err := dot.ParseFile(graphPath)
if err != nil {
return errutil.Err(err)
}
// Search for subgraph in GOPATH if not found.
if ok, _ := osutil.Exists(subPath); !ok {
dir, err := goutil.SrcDir("decomp.org/decomp/graphs/testdata/primitives")
if err != nil {
return errutil.Err(err)
}
subPath = filepath.Join(dir, subPath)
}
sub, err := graphs.ParseSubGraph(subPath)
if err != nil {
return errutil.Err(err)
}
// Locate isomorphisms.
found := false
if len(flagStart) > 0 {
// Locate an isomorphism of sub in graph which starts at the node
// specified by the "-start" flag.
m, ok := iso.Isomorphism(graph, flagStart, sub)
if ok {
found = true
printMapping(graph, sub, m)
}
} else {
// Locate all isomorphisms of sub in graph.
var names []string
for name := range graph.Nodes.Lookup {
names = append(names, name)
}
sort.Strings(names)
for _, name := range names {
m, ok := iso.Isomorphism(graph, name, sub)
if !ok {
continue
}
found = true
printMapping(graph, sub, m)
}
}
if !found {
fmt.Println("not found.")
}
return nil
}
// loadResources loads the images required to render the grid and the markers.
func loadResources() (err error) {
dataDir, err := goutil.SrcDir("github.com/mewmew/playground/archive/vaga/data")
if err != nil {
return err
}
imgGrid, err = imgutil.ReadFile(dataDir + "/grid.png")
if err != nil {
return err
}
imgO, err = imgutil.ReadFile(dataDir + "/o.png")
if err != nil {
return err
}
imgX, err = imgutil.ReadFile(dataDir + "/x.png")
if err != nil {
return err
}
return nil
}
// DirFiles returns all filenames in a folder.
func DirFiles(srcDir string) (filnames []string, err error) {
folder, err := goutil.SrcDir(srcDir)
if err != nil {
return nil, errutil.Err(err)
}
f, err := os.Open(folder)
if err != nil {
return nil, errutil.Err(err)
}
fi, err := f.Readdir(0)
if err != nil {
return nil, errutil.Err(err)
}
var filenames []string
for _, v := range fi {
filename := folder + "/" + v.Name()
filenames = append(filenames, filename)
}
return filenames, nil
}
// checkFile performs a static semantic analysis check on the given file.
func compileFile(path string, outputPath string, goccLexer bool) error {
// Lexical analysis
// Syntactic analysis
// Semantic analysis
// Intermediate representation generation
// Create lexer for the input.
buf, err := ioutilx.ReadFile(path)
if err != nil {
return errutil.Err(err)
}
if path == "-" {
path = "<stdin>"
}
fmt.Fprintf(os.Stderr, "Compiling %q\n", path)
var s parser.Scanner
if goccLexer {
s = goccscanner.NewFromBytes(buf)
} else {
s = handscanner.NewFromBytes(buf)
}
// Parse input.
p := parser.NewParser()
f, err := p.Parse(s)
if err != nil {
if err, ok := err.(*goccerrors.Error); ok {
// Unwrap Gocc error.
return parser.NewError(err)
}
return errutil.Err(err)
}
file := f.(*ast.File)
input := string(buf)
src := semerrors.NewSource(path, input)
info, err := sem.Check(file)
if err != nil {
if err, ok := err.(*errutil.ErrInfo); ok {
// Unwrap errutil error.
if err, ok := err.Err.(*semerrors.Error); ok {
// Unwrap semantic analysis error, and add input source information.
err.Src = src
return err
}
}
return errutil.Err(err)
}
// Generate LLVM IR module based on the syntax tree of the given file.
module := irgen.Gen(file, info)
// Add path to uc lib.
lib, err := goutil.SrcDir("github.com/mewmew/uc/testdata")
if err != nil {
return errutil.Err(err)
}
lib = filepath.Join(lib, "uc.ll")
// Link and create binary through clang
clang := exec.Command("clang", "-o", outputPath, "-x", "ir", lib, "-")
clang.Stdin = strings.NewReader(module.String())
clang.Stderr = os.Stderr
clang.Stdout = os.Stdout
if err := clang.Run(); err != nil {
return errutil.Err(err)
}
return nil
}
// locateAndMerge parses the provided graphs and tries to merge isomorphisms of
// the subgraph in the graph into single nodes.
func locateAndMerge(graphPath, subPath string) error {
// Parse graph.
graph, err := dot.ParseFile(graphPath)
if err != nil {
return errutil.Err(err)
}
// Search for subgraph in GOPATH if not found.
if ok, _ := osutil.Exists(subPath); !ok {
dir, err := goutil.SrcDir("decomp.org/decomp/graphs/testdata/primitives")
if err != nil {
return errutil.Err(err)
}
subPath = filepath.Join(dir, subPath)
}
sub, err := graphs.ParseSubGraph(subPath)
if err != nil {
return errutil.Err(err)
}
// Merge isomorphisms.
found := false
if len(flagStart) > 0 {
// Merge an isomorphism of sub in graph which starts at the node
// specified by the "-start" flag.
m, ok := iso.Isomorphism(graph, flagStart, sub)
if ok {
found = true
printMapping(graph, sub, m)
_, err := merge.Merge(graph, m, sub)
if err != nil {
return errutil.Err(err)
}
}
} else {
// Merge all isomorphisms of sub in graph.
for {
m, ok := iso.Search(graph, sub)
if !ok {
break
}
found = true
printMapping(graph, sub, m)
_, err := merge.Merge(graph, m, sub)
if err != nil {
return errutil.Err(err)
}
}
}
// Store DOT and PNG representation of graph.
if found {
err = dump(graph)
if err != nil {
return errutil.Err(err)
}
} else {
fmt.Println("not found.")
}
return nil
}