Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1 | package blueprint |
| 2 | |
| 3 | import ( |
| 4 | "blueprint/parser" |
| 5 | "bytes" |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "io" |
| 9 | "os" |
| 10 | "path/filepath" |
| 11 | "reflect" |
Romain Guy | 2852965 | 2014-08-12 17:50:11 -0700 | [diff] [blame] | 12 | "runtime" |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 13 | "sort" |
| 14 | "strings" |
| 15 | "text/scanner" |
| 16 | "text/template" |
| 17 | ) |
| 18 | |
| 19 | var ErrBuildActionsNotReady = errors.New("build actions are not ready") |
| 20 | |
| 21 | const maxErrors = 10 |
| 22 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 23 | // A Context contains all the state needed to parse a set of Blueprints files |
| 24 | // and generate a Ninja file. The process of generating a Ninja file proceeds |
| 25 | // through a series of four phases. Each phase corresponds with a some methods |
| 26 | // on the Context object |
| 27 | // |
| 28 | // Phase Methods |
| 29 | // ------------ ------------------------------------------- |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 30 | // 1. Registration RegisterModuleType, RegisterSingletonType |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 31 | // |
| 32 | // 2. Parse ParseBlueprintsFiles, Parse |
| 33 | // |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 34 | // 3. Generate ResolveDependencies, PrepareBuildActions |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 35 | // |
| 36 | // 4. Write WriteBuildFile |
| 37 | // |
| 38 | // The registration phase prepares the context to process Blueprints files |
| 39 | // containing various types of modules. The parse phase reads in one or more |
| 40 | // Blueprints files and validates their contents against the module types that |
| 41 | // have been registered. The generate phase then analyzes the parsed Blueprints |
| 42 | // contents to create an internal representation for the build actions that must |
| 43 | // be performed. This phase also performs validation of the module dependencies |
| 44 | // and property values defined in the parsed Blueprints files. Finally, the |
| 45 | // write phase generates the Ninja manifest text based on the generated build |
| 46 | // actions. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 47 | type Context struct { |
| 48 | // set at instantiation |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 49 | moduleFactories map[string]ModuleFactory |
| 50 | modules map[string]Module |
| 51 | moduleInfo map[Module]*moduleInfo |
| 52 | singletonInfo map[string]*singletonInfo |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 53 | |
| 54 | dependenciesReady bool // set to true on a successful ResolveDependencies |
| 55 | buildActionsReady bool // set to true on a successful PrepareBuildActions |
| 56 | |
| 57 | // set by SetIgnoreUnknownModuleTypes |
| 58 | ignoreUnknownModuleTypes bool |
| 59 | |
| 60 | // set during PrepareBuildActions |
| 61 | pkgNames map[*pkg]string |
| 62 | globalVariables map[Variable]*ninjaString |
| 63 | globalPools map[Pool]*poolDef |
| 64 | globalRules map[Rule]*ruleDef |
| 65 | |
| 66 | // set during PrepareBuildActions |
| 67 | buildDir *ninjaString // The builddir special Ninja variable |
| 68 | requiredNinjaMajor int // For the ninja_required_version variable |
| 69 | requiredNinjaMinor int // For the ninja_required_version variable |
| 70 | requiredNinjaMicro int // For the ninja_required_version variable |
| 71 | } |
| 72 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 73 | // An Error describes a problem that was encountered that is related to a |
| 74 | // particular location in a Blueprints file. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 75 | type Error struct { |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 76 | Err error // the error that occurred |
| 77 | Pos scanner.Position // the relevant Blueprints file location |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 78 | } |
| 79 | |
| 80 | type localBuildActions struct { |
| 81 | variables []*localVariable |
| 82 | rules []*localRule |
| 83 | buildDefs []*buildDef |
| 84 | } |
| 85 | |
| 86 | type moduleInfo struct { |
| 87 | // set during Parse |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 88 | typeName string |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 89 | relBlueprintsFile string |
| 90 | pos scanner.Position |
| 91 | propertyPos map[string]scanner.Position |
| 92 | properties struct { |
Romain Guy | 2852965 | 2014-08-12 17:50:11 -0700 | [diff] [blame] | 93 | Name string |
| 94 | Deps []string |
| 95 | Targets map[string][]*parser.Property |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 96 | } |
| 97 | |
| 98 | // set during ResolveDependencies |
| 99 | directDeps []Module |
| 100 | |
| 101 | // set during PrepareBuildActions |
| 102 | actionDefs localBuildActions |
| 103 | } |
| 104 | |
| 105 | type singletonInfo struct { |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 106 | // set during RegisterSingletonType |
| 107 | factory SingletonFactory |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 108 | singleton Singleton |
| 109 | |
| 110 | // set during PrepareBuildActions |
| 111 | actionDefs localBuildActions |
| 112 | } |
| 113 | |
Romain Guy | 2852965 | 2014-08-12 17:50:11 -0700 | [diff] [blame] | 114 | type TargetSelector interface { |
| 115 | SelectTarget() string |
| 116 | } |
| 117 | |
| 118 | // Default target selector that simply returns the host OS name |
| 119 | type goosTargetSelector struct { |
| 120 | } |
| 121 | |
| 122 | func (g *goosTargetSelector) SelectTarget() string { |
| 123 | return runtime.GOOS |
| 124 | } |
| 125 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 126 | func (e *Error) Error() string { |
| 127 | |
| 128 | return fmt.Sprintf("%s: %s", e.Pos, e.Err) |
| 129 | } |
| 130 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 131 | // NewContext creates a new Context object. The created context initially has |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 132 | // no module or singleton factories registered, so the RegisterModuleFactory and |
| 133 | // RegisterSingletonFactory methods must be called before it can do anything |
| 134 | // useful. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 135 | func NewContext() *Context { |
| 136 | return &Context{ |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 137 | moduleFactories: make(map[string]ModuleFactory), |
| 138 | modules: make(map[string]Module), |
| 139 | moduleInfo: make(map[Module]*moduleInfo), |
| 140 | singletonInfo: make(map[string]*singletonInfo), |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 141 | } |
| 142 | } |
| 143 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 144 | // A ModuleFactory function creates a new Module object. See the |
| 145 | // Context.RegisterModuleType method for details about how a registered |
| 146 | // ModuleFactory is used by a Context. |
| 147 | type ModuleFactory func() (m Module, propertyStructs []interface{}) |
| 148 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 149 | // RegisterModuleType associates a module type name (which can appear in a |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 150 | // Blueprints file) with a Module factory function. When the given module type |
| 151 | // name is encountered in a Blueprints file during parsing, the Module factory |
| 152 | // is invoked to instantiate a new Module object to handle the build action |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 153 | // generation for the module. |
| 154 | // |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 155 | // The module type names given here must be unique for the context. The factory |
| 156 | // function should be a named function so that its package and name can be |
| 157 | // included in the generated Ninja file for debugging purposes. |
| 158 | // |
| 159 | // The factory function returns two values. The first is the newly created |
| 160 | // Module object. The second is a slice of pointers to that Module object's |
| 161 | // properties structs. Each properties struct is examined when parsing a module |
| 162 | // definition of this type in a Blueprints file. Exported fields of the |
| 163 | // properties structs are automatically set to the property values specified in |
| 164 | // the Blueprints file. The properties struct field names determine the name of |
| 165 | // the Blueprints file properties that are used - the Blueprints property name |
| 166 | // matches that of the properties struct field name with the first letter |
| 167 | // converted to lower-case. |
| 168 | // |
| 169 | // The fields of the properties struct must be either []string, a string, or |
| 170 | // bool. The Context will panic if a Module gets instantiated with a properties |
| 171 | // struct containing a field that is not one these supported types. |
| 172 | // |
| 173 | // Any properties that appear in the Blueprints files that are not built-in |
| 174 | // module properties (such as "name" and "deps") and do not have a corresponding |
| 175 | // field in the returned module properties struct result in an error during the |
| 176 | // Context's parse phase. |
| 177 | // |
| 178 | // As an example, the follow code: |
| 179 | // |
| 180 | // type myModule struct { |
| 181 | // properties struct { |
| 182 | // Foo string |
| 183 | // Bar []string |
| 184 | // } |
| 185 | // } |
| 186 | // |
| 187 | // func NewMyModule() (blueprint.Module, []interface{}) { |
| 188 | // module := new(myModule) |
| 189 | // properties := &module.properties |
| 190 | // return module, []interface{}{properties} |
| 191 | // } |
| 192 | // |
| 193 | // func main() { |
| 194 | // ctx := blueprint.NewContext() |
| 195 | // ctx.RegisterModuleType("my_module", NewMyModule) |
| 196 | // // ... |
| 197 | // } |
| 198 | // |
| 199 | // would support parsing a module defined in a Blueprints file as follows: |
| 200 | // |
| 201 | // my_module { |
| 202 | // name: "myName", |
| 203 | // foo: "my foo string", |
| 204 | // bar: ["my", "bar", "strings"], |
| 205 | // } |
| 206 | // |
| 207 | func (c *Context) RegisterModuleType(name string, factory ModuleFactory) { |
| 208 | if _, present := c.moduleFactories[name]; present { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 209 | panic(errors.New("module type name is already registered")) |
| 210 | } |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 211 | c.moduleFactories[name] = factory |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 212 | } |
| 213 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 214 | // A SingletonFactory function creates a new Singleton object. See the |
| 215 | // Context.RegisterSingletonType method for details about how a registered |
| 216 | // SingletonFactory is used by a Context. |
| 217 | type SingletonFactory func() Singleton |
| 218 | |
| 219 | // RegisterSingletonType registers a singleton type that will be invoked to |
| 220 | // generate build actions. Each registered singleton type is instantiated and |
| 221 | // and invoked exactly once as part of the generate phase. |
| 222 | // |
| 223 | // The singleton type names given here must be unique for the context. The |
| 224 | // factory function should be a named function so that its package and name can |
| 225 | // be included in the generated Ninja file for debugging purposes. |
| 226 | func (c *Context) RegisterSingletonType(name string, factory SingletonFactory) { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 227 | if _, present := c.singletonInfo[name]; present { |
| 228 | panic(errors.New("singleton name is already registered")) |
| 229 | } |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 230 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 231 | c.singletonInfo[name] = &singletonInfo{ |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 232 | factory: factory, |
| 233 | singleton: factory(), |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 234 | } |
| 235 | } |
| 236 | |
| 237 | func singletonPkgPath(singleton Singleton) string { |
| 238 | typ := reflect.TypeOf(singleton) |
| 239 | for typ.Kind() == reflect.Ptr { |
| 240 | typ = typ.Elem() |
| 241 | } |
| 242 | return typ.PkgPath() |
| 243 | } |
| 244 | |
| 245 | func singletonTypeName(singleton Singleton) string { |
| 246 | typ := reflect.TypeOf(singleton) |
| 247 | for typ.Kind() == reflect.Ptr { |
| 248 | typ = typ.Elem() |
| 249 | } |
| 250 | return typ.PkgPath() + "." + typ.Name() |
| 251 | } |
| 252 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 253 | // SetIgnoreUnknownModuleTypes sets the behavior of the context in the case |
| 254 | // where it encounters an unknown module type while parsing Blueprints files. By |
| 255 | // default, the context will report unknown module types as an error. If this |
| 256 | // method is called with ignoreUnknownModuleTypes set to true then the context |
| 257 | // will silently ignore unknown module types. |
| 258 | // |
| 259 | // This method should generally not be used. It exists to facilitate the |
| 260 | // bootstrapping process. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 261 | func (c *Context) SetIgnoreUnknownModuleTypes(ignoreUnknownModuleTypes bool) { |
| 262 | c.ignoreUnknownModuleTypes = ignoreUnknownModuleTypes |
| 263 | } |
| 264 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 265 | // Parse parses a single Blueprints file from r, creating Module objects for |
| 266 | // each of the module definitions encountered. If the Blueprints file contains |
| 267 | // an assignment to the "subdirs" variable, then the subdirectories listed are |
| 268 | // returned in the subdirs first return value. |
| 269 | // |
| 270 | // rootDir specifies the path to the root directory of the source tree, while |
| 271 | // filename specifies the path to the Blueprints file. These paths are used for |
| 272 | // error reporting and for determining the module's directory. |
| 273 | // |
| 274 | // This method should probably not be used directly. It is provided to simplify |
| 275 | // testing. Instead ParseBlueprintsFiles should be called to parse a set of |
| 276 | // Blueprints files starting from a top-level Blueprints file. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 277 | func (c *Context) Parse(rootDir, filename string, r io.Reader) (subdirs []string, |
| 278 | errs []error) { |
| 279 | |
| 280 | c.dependenciesReady = false |
| 281 | |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 282 | relBlueprintsFile, err := filepath.Rel(rootDir, filename) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 283 | if err != nil { |
| 284 | return nil, []error{err} |
| 285 | } |
| 286 | |
| 287 | defs, errs := parser.Parse(filename, r) |
| 288 | if len(errs) > 0 { |
| 289 | for i, err := range errs { |
| 290 | if parseErr, ok := err.(*parser.ParseError); ok { |
| 291 | err = &Error{ |
| 292 | Err: parseErr.Err, |
| 293 | Pos: parseErr.Pos, |
| 294 | } |
| 295 | errs[i] = err |
| 296 | } |
| 297 | } |
| 298 | |
| 299 | // If there were any parse errors don't bother trying to interpret the |
| 300 | // result. |
| 301 | return nil, errs |
| 302 | } |
| 303 | |
| 304 | for _, def := range defs { |
| 305 | var newErrs []error |
| 306 | switch def := def.(type) { |
| 307 | case *parser.Module: |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 308 | newErrs = c.processModuleDef(def, relBlueprintsFile) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 309 | |
| 310 | case *parser.Assignment: |
| 311 | var newSubdirs []string |
| 312 | newSubdirs, newErrs = c.processAssignment(def) |
| 313 | if newSubdirs != nil { |
| 314 | subdirs = newSubdirs |
| 315 | } |
| 316 | |
| 317 | default: |
| 318 | panic("unknown definition type") |
| 319 | } |
| 320 | |
| 321 | if len(newErrs) > 0 { |
| 322 | errs = append(errs, newErrs...) |
| 323 | if len(errs) > maxErrors { |
| 324 | break |
| 325 | } |
| 326 | } |
| 327 | } |
| 328 | |
| 329 | return subdirs, errs |
| 330 | } |
| 331 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 332 | // ParseBlueprintsFiles parses a set of Blueprints files starting with the file |
| 333 | // at rootFile. When it encounters a Blueprints file with a set of subdirs |
| 334 | // listed it recursively parses any Blueprints files found in those |
| 335 | // subdirectories. |
| 336 | // |
| 337 | // If no errors are encountered while parsing the files, the list of paths on |
| 338 | // which the future output will depend is returned. This list will include both |
| 339 | // Blueprints file paths as well as directory paths for cases where wildcard |
| 340 | // subdirs are found. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 341 | func (c *Context) ParseBlueprintsFiles(rootFile string) (deps []string, |
| 342 | errs []error) { |
| 343 | |
| 344 | rootDir := filepath.Dir(rootFile) |
| 345 | |
| 346 | depsSet := map[string]bool{rootFile: true} |
| 347 | blueprints := []string{rootFile} |
| 348 | |
| 349 | var file *os.File |
| 350 | defer func() { |
| 351 | if file != nil { |
| 352 | file.Close() |
| 353 | } |
| 354 | }() |
| 355 | |
| 356 | var err error |
| 357 | |
| 358 | for i := 0; i < len(blueprints); i++ { |
| 359 | if len(errs) > maxErrors { |
| 360 | return |
| 361 | } |
| 362 | |
| 363 | filename := blueprints[i] |
| 364 | dir := filepath.Dir(filename) |
| 365 | |
| 366 | file, err = os.Open(filename) |
| 367 | if err != nil { |
| 368 | errs = append(errs, &Error{Err: err}) |
| 369 | continue |
| 370 | } |
| 371 | |
| 372 | subdirs, newErrs := c.Parse(rootDir, filename, file) |
| 373 | if len(newErrs) > 0 { |
| 374 | errs = append(errs, newErrs...) |
| 375 | continue |
| 376 | } |
| 377 | |
| 378 | err = file.Close() |
| 379 | if err != nil { |
| 380 | errs = append(errs, &Error{Err: err}) |
| 381 | continue |
| 382 | } |
| 383 | |
| 384 | // Add the subdirs to the list of directories to parse Blueprint files |
| 385 | // from. |
| 386 | for _, subdir := range subdirs { |
| 387 | subdir = filepath.Join(dir, subdir) |
| 388 | dirPart, filePart := filepath.Split(subdir) |
| 389 | dirPart = filepath.Clean(dirPart) |
| 390 | |
| 391 | if filePart == "*" { |
| 392 | foundSubdirs, err := listSubdirs(dirPart) |
| 393 | if err != nil { |
| 394 | errs = append(errs, &Error{Err: err}) |
| 395 | continue |
| 396 | } |
| 397 | |
| 398 | for _, foundSubdir := range foundSubdirs { |
| 399 | subBlueprints := filepath.Join(dirPart, foundSubdir, |
| 400 | "Blueprints") |
| 401 | |
| 402 | _, err := os.Stat(subBlueprints) |
| 403 | if os.IsNotExist(err) { |
| 404 | // There is no Blueprints file in this subdirectory. We |
| 405 | // need to add the directory to the list of dependencies |
| 406 | // so that if someone adds a Blueprints file in the |
| 407 | // future we'll pick it up. |
| 408 | depsSet[filepath.Dir(subBlueprints)] = true |
| 409 | } else if !depsSet[subBlueprints] { |
| 410 | // We haven't seen this Blueprints file before, so add |
| 411 | // it to our list. |
| 412 | depsSet[subBlueprints] = true |
| 413 | blueprints = append(blueprints, subBlueprints) |
| 414 | } |
| 415 | } |
| 416 | |
| 417 | // We now depend on the directory itself because if any new |
| 418 | // subdirectories get added or removed we need to rebuild the |
| 419 | // Ninja manifest. |
| 420 | depsSet[dirPart] = true |
| 421 | } else { |
| 422 | subBlueprints := filepath.Join(subdir, "Blueprints") |
| 423 | if !depsSet[subBlueprints] { |
| 424 | depsSet[subBlueprints] = true |
| 425 | blueprints = append(blueprints, subBlueprints) |
| 426 | } |
| 427 | } |
| 428 | } |
| 429 | } |
| 430 | |
| 431 | for dep := range depsSet { |
| 432 | deps = append(deps, dep) |
| 433 | } |
| 434 | |
| 435 | return |
| 436 | } |
| 437 | |
| 438 | func listSubdirs(dir string) ([]string, error) { |
| 439 | d, err := os.Open(dir) |
| 440 | if err != nil { |
| 441 | return nil, err |
| 442 | } |
| 443 | defer d.Close() |
| 444 | |
| 445 | infos, err := d.Readdir(-1) |
| 446 | if err != nil { |
| 447 | return nil, err |
| 448 | } |
| 449 | |
| 450 | var subdirs []string |
| 451 | for _, info := range infos { |
| 452 | if info.IsDir() { |
| 453 | subdirs = append(subdirs, info.Name()) |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | return subdirs, nil |
| 458 | } |
| 459 | |
| 460 | func (c *Context) processAssignment( |
| 461 | assignment *parser.Assignment) (subdirs []string, errs []error) { |
| 462 | |
| 463 | if assignment.Name == "subdirs" { |
| 464 | switch assignment.Value.Type { |
| 465 | case parser.List: |
| 466 | subdirs = make([]string, 0, len(assignment.Value.ListValue)) |
| 467 | |
| 468 | for _, value := range assignment.Value.ListValue { |
| 469 | if value.Type != parser.String { |
| 470 | // The parser should not produce this. |
| 471 | panic("non-string value found in list") |
| 472 | } |
| 473 | |
| 474 | dirPart, filePart := filepath.Split(value.StringValue) |
| 475 | if (filePart != "*" && strings.ContainsRune(filePart, '*')) || |
| 476 | strings.ContainsRune(dirPart, '*') { |
| 477 | |
| 478 | errs = append(errs, &Error{ |
| 479 | Err: fmt.Errorf("subdirs may only wildcard whole " + |
| 480 | "directories"), |
| 481 | Pos: value.Pos, |
| 482 | }) |
| 483 | |
| 484 | continue |
| 485 | } |
| 486 | |
| 487 | subdirs = append(subdirs, value.StringValue) |
| 488 | } |
| 489 | |
| 490 | if len(errs) > 0 { |
| 491 | subdirs = nil |
| 492 | } |
| 493 | |
| 494 | return |
| 495 | |
| 496 | case parser.Bool, parser.String: |
| 497 | errs = []error{ |
| 498 | &Error{ |
| 499 | Err: fmt.Errorf("subdirs must be a list of strings"), |
| 500 | Pos: assignment.Pos, |
| 501 | }, |
| 502 | } |
| 503 | |
| 504 | return |
| 505 | |
| 506 | default: |
| 507 | panic(fmt.Errorf("unknown value type: %d", assignment.Value.Type)) |
| 508 | } |
| 509 | } |
| 510 | |
| 511 | return nil, []error{ |
| 512 | &Error{ |
| 513 | Err: fmt.Errorf("only 'subdirs' assignment is supported"), |
| 514 | Pos: assignment.Pos, |
| 515 | }, |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | func (c *Context) processModuleDef(moduleDef *parser.Module, |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 520 | relBlueprintsFile string) []error { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 521 | |
| 522 | typeName := moduleDef.Type |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 523 | factory, ok := c.moduleFactories[typeName] |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 524 | if !ok { |
| 525 | if c.ignoreUnknownModuleTypes { |
| 526 | return nil |
| 527 | } |
| 528 | |
Jamie Gennis | d4c53d8 | 2014-06-22 17:02:55 -0700 | [diff] [blame] | 529 | return []error{ |
| 530 | &Error{ |
| 531 | Err: fmt.Errorf("unrecognized module type %q", typeName), |
| 532 | Pos: moduleDef.Pos, |
| 533 | }, |
| 534 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 535 | } |
| 536 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 537 | module, properties := factory() |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 538 | info := &moduleInfo{ |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 539 | typeName: typeName, |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 540 | relBlueprintsFile: relBlueprintsFile, |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 541 | } |
| 542 | |
Jamie Gennis | d4c53d8 | 2014-06-22 17:02:55 -0700 | [diff] [blame] | 543 | properties = append(properties, &info.properties) |
| 544 | |
| 545 | errs := unpackProperties(moduleDef.Properties, properties...) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 546 | if len(errs) > 0 { |
| 547 | return errs |
| 548 | } |
| 549 | |
Romain Guy | 2852965 | 2014-08-12 17:50:11 -0700 | [diff] [blame] | 550 | var targetName string |
| 551 | if selector, ok := module.(TargetSelector); ok { |
| 552 | targetName = selector.SelectTarget() |
| 553 | } else { |
| 554 | defaultSelector := goosTargetSelector{} |
| 555 | targetName = defaultSelector.SelectTarget() |
| 556 | } |
| 557 | |
| 558 | if targetProperties, ok := info.properties.Targets[targetName]; ok { |
| 559 | errs = mergeProperties(targetProperties, properties...) |
| 560 | if len(errs) > 0 { |
| 561 | return errs |
| 562 | } |
| 563 | } |
| 564 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 565 | info.pos = moduleDef.Pos |
| 566 | info.propertyPos = make(map[string]scanner.Position) |
| 567 | for _, propertyDef := range moduleDef.Properties { |
| 568 | info.propertyPos[propertyDef.Name] = propertyDef.Pos |
| 569 | } |
| 570 | |
| 571 | name := info.properties.Name |
| 572 | err := validateNinjaName(name) |
| 573 | if err != nil { |
| 574 | return []error{ |
| 575 | &Error{ |
| 576 | Err: fmt.Errorf("invalid module name %q: %s", err), |
| 577 | Pos: info.propertyPos["name"], |
| 578 | }, |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | if first, present := c.modules[name]; present { |
| 583 | errs = append(errs, &Error{ |
| 584 | Err: fmt.Errorf("module %q already defined", name), |
| 585 | Pos: moduleDef.Pos, |
| 586 | }) |
| 587 | errs = append(errs, &Error{ |
| 588 | Err: fmt.Errorf("<-- previous definition here"), |
| 589 | Pos: c.moduleInfo[first].pos, |
| 590 | }) |
| 591 | if len(errs) >= maxErrors { |
| 592 | return errs |
| 593 | } |
| 594 | } |
| 595 | |
| 596 | c.modules[name] = module |
| 597 | c.moduleInfo[module] = info |
| 598 | |
| 599 | return nil |
| 600 | } |
| 601 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 602 | // ResolveDependencies checks that the dependencies specified by all of the |
| 603 | // modules defined in the parsed Blueprints files are valid. This means that |
| 604 | // the modules depended upon are defined and that no circular dependencies |
| 605 | // exist. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 606 | func (c *Context) ResolveDependencies() []error { |
| 607 | errs := c.resolveDependencies() |
| 608 | if len(errs) > 0 { |
| 609 | return errs |
| 610 | } |
| 611 | |
| 612 | errs = c.checkForDependencyCycles() |
| 613 | if len(errs) > 0 { |
| 614 | return errs |
| 615 | } |
| 616 | |
| 617 | c.dependenciesReady = true |
| 618 | return nil |
| 619 | } |
| 620 | |
| 621 | // resolveDependencies populates the moduleInfo.directDeps list for every |
| 622 | // module. In doing so it checks for missing dependencies and self-dependant |
| 623 | // modules. |
| 624 | func (c *Context) resolveDependencies() (errs []error) { |
| 625 | for _, info := range c.moduleInfo { |
| 626 | depNames := info.properties.Deps |
| 627 | info.directDeps = make([]Module, 0, len(depNames)) |
| 628 | depsPos := info.propertyPos["deps"] |
| 629 | |
| 630 | for _, depName := range depNames { |
| 631 | if depName == info.properties.Name { |
| 632 | errs = append(errs, &Error{ |
| 633 | Err: fmt.Errorf("%q depends on itself", depName), |
| 634 | Pos: depsPos, |
| 635 | }) |
| 636 | continue |
| 637 | } |
| 638 | |
| 639 | dep, ok := c.modules[depName] |
| 640 | if !ok { |
| 641 | errs = append(errs, &Error{ |
| 642 | Err: fmt.Errorf("%q depends on undefined module %q", |
| 643 | info.properties.Name, depName), |
| 644 | Pos: depsPos, |
| 645 | }) |
| 646 | continue |
| 647 | } |
| 648 | |
| 649 | info.directDeps = append(info.directDeps, dep) |
| 650 | } |
| 651 | } |
| 652 | |
| 653 | return |
| 654 | } |
| 655 | |
| 656 | // checkForDependencyCycles recursively walks the module dependency graph and |
| 657 | // reports errors when it encounters dependency cycles. This should only be |
| 658 | // called after resolveDependencies. |
| 659 | func (c *Context) checkForDependencyCycles() (errs []error) { |
| 660 | visited := make(map[Module]bool) // modules that were already checked |
| 661 | checking := make(map[Module]bool) // modules actively being checked |
| 662 | |
| 663 | var check func(m Module) []Module |
| 664 | |
| 665 | check = func(m Module) []Module { |
| 666 | info := c.moduleInfo[m] |
| 667 | |
| 668 | visited[m] = true |
| 669 | checking[m] = true |
| 670 | defer delete(checking, m) |
| 671 | |
| 672 | for _, dep := range info.directDeps { |
| 673 | if checking[dep] { |
| 674 | // This is a cycle. |
| 675 | return []Module{dep, m} |
| 676 | } |
| 677 | |
| 678 | if !visited[dep] { |
| 679 | cycle := check(dep) |
| 680 | if cycle != nil { |
| 681 | if cycle[0] == m { |
| 682 | // We are the "start" of the cycle, so we're responsible |
| 683 | // for generating the errors. The cycle list is in |
| 684 | // reverse order because all the 'check' calls append |
| 685 | // their own module to the list. |
| 686 | errs = append(errs, &Error{ |
| 687 | Err: fmt.Errorf("encountered dependency cycle:"), |
| 688 | Pos: info.pos, |
| 689 | }) |
| 690 | |
| 691 | // Iterate backwards through the cycle list. |
| 692 | curInfo := info |
| 693 | for i := len(cycle) - 1; i >= 0; i-- { |
| 694 | nextInfo := c.moduleInfo[cycle[i]] |
| 695 | errs = append(errs, &Error{ |
| 696 | Err: fmt.Errorf(" %q depends on %q", |
| 697 | curInfo.properties.Name, |
| 698 | nextInfo.properties.Name), |
| 699 | Pos: curInfo.propertyPos["deps"], |
| 700 | }) |
| 701 | curInfo = nextInfo |
| 702 | } |
| 703 | |
| 704 | // We can continue processing this module's children to |
| 705 | // find more cycles. Since all the modules that were |
| 706 | // part of the found cycle were marked as visited we |
| 707 | // won't run into that cycle again. |
| 708 | } else { |
| 709 | // We're not the "start" of the cycle, so we just append |
| 710 | // our module to the list and return it. |
| 711 | return append(cycle, m) |
| 712 | } |
| 713 | } |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | return nil |
| 718 | } |
| 719 | |
| 720 | for _, module := range c.modules { |
| 721 | if !visited[module] { |
| 722 | cycle := check(module) |
| 723 | if cycle != nil { |
| 724 | panic("inconceivable!") |
| 725 | } |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | return |
| 730 | } |
| 731 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 732 | // PrepareBuildActions generates an internal representation of all the build |
| 733 | // actions that need to be performed. This process involves invoking the |
| 734 | // GenerateBuildActions method on each of the Module objects created during the |
| 735 | // parse phase and then on each of the registered Singleton objects. |
| 736 | // |
| 737 | // If the ResolveDependencies method has not already been called it is called |
| 738 | // automatically by this method. |
| 739 | // |
| 740 | // The config argument is made available to all of the Module and Singleton |
| 741 | // objects via the Config method on the ModuleContext and SingletonContext |
| 742 | // objects passed to GenerateBuildActions. It is also passed to the functions |
| 743 | // specified via PoolFunc, RuleFunc, and VariableFunc so that they can compute |
| 744 | // config-specific values. |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 745 | // |
| 746 | // The returned deps is a list of the ninja files dependencies that were added |
| 747 | // by the modules and singletons via the ModuleContext.AddNinjaFileDeps() and |
| 748 | // SingletonContext.AddNinjaFileDeps() methods. |
| 749 | func (c *Context) PrepareBuildActions(config interface{}) (deps []string, errs []error) { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 750 | c.buildActionsReady = false |
| 751 | |
| 752 | if !c.dependenciesReady { |
| 753 | errs := c.ResolveDependencies() |
| 754 | if len(errs) > 0 { |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 755 | return nil, errs |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 756 | } |
| 757 | } |
| 758 | |
| 759 | liveGlobals := newLiveTracker(config) |
| 760 | |
| 761 | c.initSpecialVariables() |
| 762 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 763 | depsModules, errs := c.generateModuleBuildActions(config, liveGlobals) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 764 | if len(errs) > 0 { |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 765 | return nil, errs |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 766 | } |
| 767 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 768 | depsSingletons, errs := c.generateSingletonBuildActions(config, liveGlobals) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 769 | if len(errs) > 0 { |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 770 | return nil, errs |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 771 | } |
| 772 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 773 | deps = append(depsModules, depsSingletons...) |
| 774 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 775 | if c.buildDir != nil { |
| 776 | liveGlobals.addNinjaStringDeps(c.buildDir) |
| 777 | } |
| 778 | |
| 779 | pkgNames := c.makeUniquePackageNames(liveGlobals) |
| 780 | |
| 781 | // This will panic if it finds a problem since it's a programming error. |
| 782 | c.checkForVariableReferenceCycles(liveGlobals.variables, pkgNames) |
| 783 | |
| 784 | c.pkgNames = pkgNames |
| 785 | c.globalVariables = liveGlobals.variables |
| 786 | c.globalPools = liveGlobals.pools |
| 787 | c.globalRules = liveGlobals.rules |
| 788 | |
| 789 | c.buildActionsReady = true |
| 790 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 791 | return deps, nil |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 792 | } |
| 793 | |
| 794 | func (c *Context) initSpecialVariables() { |
| 795 | c.buildDir = nil |
| 796 | c.requiredNinjaMajor = 1 |
| 797 | c.requiredNinjaMinor = 1 |
| 798 | c.requiredNinjaMicro = 0 |
| 799 | } |
| 800 | |
Jamie Gennis | 6eb4d24 | 2014-06-11 18:31:16 -0700 | [diff] [blame] | 801 | func (c *Context) generateModuleBuildActions(config interface{}, |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 802 | liveGlobals *liveTracker) ([]string, []error) { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 803 | |
| 804 | visited := make(map[Module]bool) |
| 805 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 806 | var deps []string |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 807 | var errs []error |
| 808 | |
| 809 | var walk func(module Module) |
| 810 | walk = func(module Module) { |
| 811 | visited[module] = true |
| 812 | |
| 813 | info := c.moduleInfo[module] |
| 814 | for _, dep := range info.directDeps { |
| 815 | if !visited[dep] { |
| 816 | walk(dep) |
Jamie Gennis | ae4430c | 2014-07-23 14:37:21 -0700 | [diff] [blame] | 817 | if len(errs) > 0 { |
| 818 | return |
| 819 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 820 | } |
| 821 | } |
| 822 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 823 | // The parent scope of the moduleContext's local scope gets overridden to be that of the |
| 824 | // calling Go package on a per-call basis. Since the initial parent scope doesn't matter we |
| 825 | // just set it to nil. |
| 826 | scope := newLocalScope(nil, moduleNamespacePrefix(info.properties.Name)) |
| 827 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 828 | mctx := &moduleContext{ |
| 829 | context: c, |
| 830 | config: config, |
| 831 | module: module, |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 832 | scope: scope, |
| 833 | info: info, |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 834 | } |
| 835 | |
| 836 | module.GenerateBuildActions(mctx) |
| 837 | |
| 838 | if len(mctx.errs) > 0 { |
| 839 | errs = append(errs, mctx.errs...) |
| 840 | return |
| 841 | } |
| 842 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 843 | deps = append(deps, mctx.ninjaFileDeps...) |
| 844 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 845 | newErrs := c.processLocalBuildActions(&info.actionDefs, |
| 846 | &mctx.actionDefs, liveGlobals) |
| 847 | errs = append(errs, newErrs...) |
| 848 | } |
| 849 | |
| 850 | for _, module := range c.modules { |
| 851 | if !visited[module] { |
| 852 | walk(module) |
Jamie Gennis | ae4430c | 2014-07-23 14:37:21 -0700 | [diff] [blame] | 853 | if len(errs) > 0 { |
| 854 | break |
| 855 | } |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 856 | } |
| 857 | } |
| 858 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 859 | return deps, errs |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 860 | } |
| 861 | |
Jamie Gennis | 6eb4d24 | 2014-06-11 18:31:16 -0700 | [diff] [blame] | 862 | func (c *Context) generateSingletonBuildActions(config interface{}, |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 863 | liveGlobals *liveTracker) ([]string, []error) { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 864 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 865 | var deps []string |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 866 | var errs []error |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 867 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 868 | for name, info := range c.singletonInfo { |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 869 | // The parent scope of the singletonContext's local scope gets overridden to be that of the |
| 870 | // calling Go package on a per-call basis. Since the initial parent scope doesn't matter we |
| 871 | // just set it to nil. |
| 872 | scope := newLocalScope(nil, singletonNamespacePrefix(name)) |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 873 | |
| 874 | sctx := &singletonContext{ |
| 875 | context: c, |
| 876 | config: config, |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 877 | scope: scope, |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 878 | } |
| 879 | |
| 880 | info.singleton.GenerateBuildActions(sctx) |
| 881 | |
| 882 | if len(sctx.errs) > 0 { |
| 883 | errs = append(errs, sctx.errs...) |
| 884 | if len(errs) > maxErrors { |
| 885 | break |
| 886 | } |
| 887 | continue |
| 888 | } |
| 889 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 890 | deps = append(deps, sctx.ninjaFileDeps...) |
| 891 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 892 | newErrs := c.processLocalBuildActions(&info.actionDefs, |
| 893 | &sctx.actionDefs, liveGlobals) |
| 894 | errs = append(errs, newErrs...) |
| 895 | if len(errs) > maxErrors { |
| 896 | break |
| 897 | } |
| 898 | } |
| 899 | |
Mathias Agopian | 5b8477d | 2014-06-25 17:21:54 -0700 | [diff] [blame] | 900 | return deps, errs |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 901 | } |
| 902 | |
| 903 | func (c *Context) processLocalBuildActions(out, in *localBuildActions, |
| 904 | liveGlobals *liveTracker) []error { |
| 905 | |
| 906 | var errs []error |
| 907 | |
| 908 | // First we go through and add everything referenced by the module's |
| 909 | // buildDefs to the live globals set. This will end up adding the live |
| 910 | // locals to the set as well, but we'll take them out after. |
| 911 | for _, def := range in.buildDefs { |
| 912 | err := liveGlobals.AddBuildDefDeps(def) |
| 913 | if err != nil { |
| 914 | errs = append(errs, err) |
| 915 | } |
| 916 | } |
| 917 | |
| 918 | if len(errs) > 0 { |
| 919 | return errs |
| 920 | } |
| 921 | |
| 922 | out.buildDefs = in.buildDefs |
| 923 | |
| 924 | // We use the now-incorrect set of live "globals" to determine which local |
| 925 | // definitions are live. As we go through copying those live locals to the |
| 926 | // moduleInfo we remove them from the live globals set. |
| 927 | out.variables = nil |
| 928 | for _, v := range in.variables { |
| 929 | _, isLive := liveGlobals.variables[v] |
| 930 | if isLive { |
| 931 | out.variables = append(out.variables, v) |
| 932 | delete(liveGlobals.variables, v) |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | out.rules = nil |
| 937 | for _, r := range in.rules { |
| 938 | _, isLive := liveGlobals.rules[r] |
| 939 | if isLive { |
| 940 | out.rules = append(out.rules, r) |
| 941 | delete(liveGlobals.rules, r) |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | return nil |
| 946 | } |
| 947 | |
| 948 | func (c *Context) visitDepsDepthFirst(module Module, visit func(Module)) { |
| 949 | visited := make(map[Module]bool) |
| 950 | |
| 951 | var walk func(m Module) |
| 952 | walk = func(m Module) { |
| 953 | info := c.moduleInfo[m] |
| 954 | visited[m] = true |
| 955 | for _, dep := range info.directDeps { |
| 956 | if !visited[dep] { |
| 957 | walk(dep) |
| 958 | } |
| 959 | } |
| 960 | visit(m) |
| 961 | } |
| 962 | |
| 963 | info := c.moduleInfo[module] |
| 964 | for _, dep := range info.directDeps { |
| 965 | if !visited[dep] { |
| 966 | walk(dep) |
| 967 | } |
| 968 | } |
| 969 | } |
| 970 | |
| 971 | func (c *Context) visitDepsDepthFirstIf(module Module, pred func(Module) bool, |
| 972 | visit func(Module)) { |
| 973 | |
| 974 | visited := make(map[Module]bool) |
| 975 | |
| 976 | var walk func(m Module) |
| 977 | walk = func(m Module) { |
| 978 | info := c.moduleInfo[m] |
| 979 | visited[m] = true |
| 980 | if pred(m) { |
| 981 | for _, dep := range info.directDeps { |
| 982 | if !visited[dep] { |
| 983 | walk(dep) |
| 984 | } |
| 985 | } |
| 986 | visit(m) |
| 987 | } |
| 988 | } |
| 989 | |
| 990 | info := c.moduleInfo[module] |
| 991 | for _, dep := range info.directDeps { |
| 992 | if !visited[dep] { |
| 993 | walk(dep) |
| 994 | } |
| 995 | } |
| 996 | } |
| 997 | |
| 998 | func (c *Context) visitAllModules(visit func(Module)) { |
| 999 | for _, module := range c.modules { |
| 1000 | visit(module) |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | func (c *Context) visitAllModulesIf(pred func(Module) bool, |
| 1005 | visit func(Module)) { |
| 1006 | |
| 1007 | for _, module := range c.modules { |
| 1008 | if pred(module) { |
| 1009 | visit(module) |
| 1010 | } |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | func (c *Context) requireNinjaVersion(major, minor, micro int) { |
| 1015 | if major != 1 { |
| 1016 | panic("ninja version with major version != 1 not supported") |
| 1017 | } |
| 1018 | if c.requiredNinjaMinor < minor { |
| 1019 | c.requiredNinjaMinor = minor |
| 1020 | c.requiredNinjaMicro = micro |
| 1021 | } |
| 1022 | if c.requiredNinjaMinor == minor && c.requiredNinjaMicro < micro { |
| 1023 | c.requiredNinjaMicro = micro |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | func (c *Context) setBuildDir(value *ninjaString) { |
| 1028 | if c.buildDir != nil { |
| 1029 | panic("buildDir set multiple times") |
| 1030 | } |
| 1031 | c.buildDir = value |
| 1032 | } |
| 1033 | |
| 1034 | func (c *Context) makeUniquePackageNames( |
| 1035 | liveGlobals *liveTracker) map[*pkg]string { |
| 1036 | |
| 1037 | pkgs := make(map[string]*pkg) |
| 1038 | pkgNames := make(map[*pkg]string) |
| 1039 | longPkgNames := make(map[*pkg]bool) |
| 1040 | |
| 1041 | processPackage := func(pkg *pkg) { |
| 1042 | if pkg == nil { |
| 1043 | // This is a built-in rule and has no package. |
| 1044 | return |
| 1045 | } |
| 1046 | if _, ok := pkgNames[pkg]; ok { |
| 1047 | // We've already processed this package. |
| 1048 | return |
| 1049 | } |
| 1050 | |
| 1051 | otherPkg, present := pkgs[pkg.shortName] |
| 1052 | if present { |
| 1053 | // Short name collision. Both this package and the one that's |
| 1054 | // already there need to use their full names. We leave the short |
| 1055 | // name in pkgNames for now so future collisions still get caught. |
| 1056 | longPkgNames[pkg] = true |
| 1057 | longPkgNames[otherPkg] = true |
| 1058 | } else { |
| 1059 | // No collision so far. Tentatively set the package's name to be |
| 1060 | // its short name. |
| 1061 | pkgNames[pkg] = pkg.shortName |
| 1062 | } |
| 1063 | } |
| 1064 | |
| 1065 | // We try to give all packages their short name, but when we get collisions |
| 1066 | // we need to use the full unique package name. |
| 1067 | for v, _ := range liveGlobals.variables { |
| 1068 | processPackage(v.pkg()) |
| 1069 | } |
| 1070 | for p, _ := range liveGlobals.pools { |
| 1071 | processPackage(p.pkg()) |
| 1072 | } |
| 1073 | for r, _ := range liveGlobals.rules { |
| 1074 | processPackage(r.pkg()) |
| 1075 | } |
| 1076 | |
| 1077 | // Add the packages that had collisions using their full unique names. This |
| 1078 | // will overwrite any short names that were added in the previous step. |
| 1079 | for pkg := range longPkgNames { |
| 1080 | pkgNames[pkg] = pkg.fullName |
| 1081 | } |
| 1082 | |
| 1083 | return pkgNames |
| 1084 | } |
| 1085 | |
| 1086 | func (c *Context) checkForVariableReferenceCycles( |
| 1087 | variables map[Variable]*ninjaString, pkgNames map[*pkg]string) { |
| 1088 | |
| 1089 | visited := make(map[Variable]bool) // variables that were already checked |
| 1090 | checking := make(map[Variable]bool) // variables actively being checked |
| 1091 | |
| 1092 | var check func(v Variable) []Variable |
| 1093 | |
| 1094 | check = func(v Variable) []Variable { |
| 1095 | visited[v] = true |
| 1096 | checking[v] = true |
| 1097 | defer delete(checking, v) |
| 1098 | |
| 1099 | value := variables[v] |
| 1100 | for _, dep := range value.variables { |
| 1101 | if checking[dep] { |
| 1102 | // This is a cycle. |
| 1103 | return []Variable{dep, v} |
| 1104 | } |
| 1105 | |
| 1106 | if !visited[dep] { |
| 1107 | cycle := check(dep) |
| 1108 | if cycle != nil { |
| 1109 | if cycle[0] == v { |
| 1110 | // We are the "start" of the cycle, so we're responsible |
| 1111 | // for generating the errors. The cycle list is in |
| 1112 | // reverse order because all the 'check' calls append |
| 1113 | // their own module to the list. |
| 1114 | msgs := []string{"detected variable reference cycle:"} |
| 1115 | |
| 1116 | // Iterate backwards through the cycle list. |
| 1117 | curName := v.fullName(pkgNames) |
| 1118 | curValue := value.Value(pkgNames) |
| 1119 | for i := len(cycle) - 1; i >= 0; i-- { |
| 1120 | next := cycle[i] |
| 1121 | nextName := next.fullName(pkgNames) |
| 1122 | nextValue := variables[next].Value(pkgNames) |
| 1123 | |
| 1124 | msgs = append(msgs, fmt.Sprintf( |
| 1125 | " %q depends on %q", curName, nextName)) |
| 1126 | msgs = append(msgs, fmt.Sprintf( |
| 1127 | " [%s = %s]", curName, curValue)) |
| 1128 | |
| 1129 | curName = nextName |
| 1130 | curValue = nextValue |
| 1131 | } |
| 1132 | |
| 1133 | // Variable reference cycles are a programming error, |
| 1134 | // not the fault of the Blueprint file authors. |
| 1135 | panic(strings.Join(msgs, "\n")) |
| 1136 | } else { |
| 1137 | // We're not the "start" of the cycle, so we just append |
| 1138 | // our module to the list and return it. |
| 1139 | return append(cycle, v) |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | } |
| 1144 | |
| 1145 | return nil |
| 1146 | } |
| 1147 | |
| 1148 | for v := range variables { |
| 1149 | if !visited[v] { |
| 1150 | cycle := check(v) |
| 1151 | if cycle != nil { |
| 1152 | panic("inconceivable!") |
| 1153 | } |
| 1154 | } |
| 1155 | } |
| 1156 | } |
| 1157 | |
Jamie Gennis | d4e1018 | 2014-06-12 20:06:50 -0700 | [diff] [blame] | 1158 | // WriteBuildFile writes the Ninja manifeset text for the generated build |
| 1159 | // actions to w. If this is called before PrepareBuildActions successfully |
| 1160 | // completes then ErrBuildActionsNotReady is returned. |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1161 | func (c *Context) WriteBuildFile(w io.Writer) error { |
| 1162 | if !c.buildActionsReady { |
| 1163 | return ErrBuildActionsNotReady |
| 1164 | } |
| 1165 | |
| 1166 | nw := newNinjaWriter(w) |
| 1167 | |
| 1168 | err := c.writeBuildFileHeader(nw) |
| 1169 | if err != nil { |
| 1170 | return err |
| 1171 | } |
| 1172 | |
| 1173 | err = c.writeNinjaRequiredVersion(nw) |
| 1174 | if err != nil { |
| 1175 | return err |
| 1176 | } |
| 1177 | |
| 1178 | // TODO: Group the globals by package. |
| 1179 | |
| 1180 | err = c.writeGlobalVariables(nw) |
| 1181 | if err != nil { |
| 1182 | return err |
| 1183 | } |
| 1184 | |
| 1185 | err = c.writeGlobalPools(nw) |
| 1186 | if err != nil { |
| 1187 | return err |
| 1188 | } |
| 1189 | |
| 1190 | err = c.writeBuildDir(nw) |
| 1191 | if err != nil { |
| 1192 | return err |
| 1193 | } |
| 1194 | |
| 1195 | err = c.writeGlobalRules(nw) |
| 1196 | if err != nil { |
| 1197 | return err |
| 1198 | } |
| 1199 | |
| 1200 | err = c.writeAllModuleActions(nw) |
| 1201 | if err != nil { |
| 1202 | return err |
| 1203 | } |
| 1204 | |
| 1205 | err = c.writeAllSingletonActions(nw) |
| 1206 | if err != nil { |
| 1207 | return err |
| 1208 | } |
| 1209 | |
| 1210 | return nil |
| 1211 | } |
| 1212 | |
| 1213 | func (c *Context) writeBuildFileHeader(nw *ninjaWriter) error { |
| 1214 | headerTemplate := template.New("fileHeader") |
| 1215 | _, err := headerTemplate.Parse(fileHeaderTemplate) |
| 1216 | if err != nil { |
| 1217 | // This is a programming error. |
| 1218 | panic(err) |
| 1219 | } |
| 1220 | |
| 1221 | type pkgAssociation struct { |
| 1222 | PkgName string |
| 1223 | PkgPath string |
| 1224 | } |
| 1225 | |
| 1226 | var pkgs []pkgAssociation |
| 1227 | maxNameLen := 0 |
| 1228 | for pkg, name := range c.pkgNames { |
| 1229 | pkgs = append(pkgs, pkgAssociation{ |
| 1230 | PkgName: name, |
| 1231 | PkgPath: pkg.pkgPath, |
| 1232 | }) |
| 1233 | if len(name) > maxNameLen { |
| 1234 | maxNameLen = len(name) |
| 1235 | } |
| 1236 | } |
| 1237 | |
| 1238 | for i := range pkgs { |
| 1239 | pkgs[i].PkgName += strings.Repeat(" ", maxNameLen-len(pkgs[i].PkgName)) |
| 1240 | } |
| 1241 | |
| 1242 | params := map[string]interface{}{ |
| 1243 | "Pkgs": pkgs, |
| 1244 | } |
| 1245 | |
| 1246 | buf := bytes.NewBuffer(nil) |
| 1247 | err = headerTemplate.Execute(buf, params) |
| 1248 | if err != nil { |
| 1249 | return err |
| 1250 | } |
| 1251 | |
| 1252 | return nw.Comment(buf.String()) |
| 1253 | } |
| 1254 | |
| 1255 | func (c *Context) writeNinjaRequiredVersion(nw *ninjaWriter) error { |
| 1256 | value := fmt.Sprintf("%d.%d.%d", c.requiredNinjaMajor, c.requiredNinjaMinor, |
| 1257 | c.requiredNinjaMicro) |
| 1258 | |
| 1259 | err := nw.Assign("ninja_required_version", value) |
| 1260 | if err != nil { |
| 1261 | return err |
| 1262 | } |
| 1263 | |
| 1264 | return nw.BlankLine() |
| 1265 | } |
| 1266 | |
| 1267 | func (c *Context) writeBuildDir(nw *ninjaWriter) error { |
| 1268 | if c.buildDir != nil { |
| 1269 | err := nw.Assign("builddir", c.buildDir.Value(c.pkgNames)) |
| 1270 | if err != nil { |
| 1271 | return err |
| 1272 | } |
| 1273 | |
| 1274 | err = nw.BlankLine() |
| 1275 | if err != nil { |
| 1276 | return err |
| 1277 | } |
| 1278 | } |
| 1279 | return nil |
| 1280 | } |
| 1281 | |
| 1282 | type variableSorter struct { |
| 1283 | pkgNames map[*pkg]string |
| 1284 | variables []Variable |
| 1285 | } |
| 1286 | |
| 1287 | func (v *variableSorter) Len() int { |
| 1288 | return len(v.variables) |
| 1289 | } |
| 1290 | |
| 1291 | func (v *variableSorter) Less(i, j int) bool { |
| 1292 | iName := v.variables[i].fullName(v.pkgNames) |
| 1293 | jName := v.variables[j].fullName(v.pkgNames) |
| 1294 | return iName < jName |
| 1295 | } |
| 1296 | |
| 1297 | func (v *variableSorter) Swap(i, j int) { |
| 1298 | v.variables[i], v.variables[j] = v.variables[j], v.variables[i] |
| 1299 | } |
| 1300 | |
| 1301 | func (c *Context) writeGlobalVariables(nw *ninjaWriter) error { |
| 1302 | visited := make(map[Variable]bool) |
| 1303 | |
| 1304 | var walk func(v Variable) error |
| 1305 | walk = func(v Variable) error { |
| 1306 | visited[v] = true |
| 1307 | |
| 1308 | // First visit variables on which this variable depends. |
| 1309 | value := c.globalVariables[v] |
| 1310 | for _, dep := range value.variables { |
| 1311 | if !visited[dep] { |
| 1312 | err := walk(dep) |
| 1313 | if err != nil { |
| 1314 | return err |
| 1315 | } |
| 1316 | } |
| 1317 | } |
| 1318 | |
| 1319 | err := nw.Assign(v.fullName(c.pkgNames), value.Value(c.pkgNames)) |
| 1320 | if err != nil { |
| 1321 | return err |
| 1322 | } |
| 1323 | |
| 1324 | err = nw.BlankLine() |
| 1325 | if err != nil { |
| 1326 | return err |
| 1327 | } |
| 1328 | |
| 1329 | return nil |
| 1330 | } |
| 1331 | |
| 1332 | globalVariables := make([]Variable, 0, len(c.globalVariables)) |
| 1333 | for v := range c.globalVariables { |
| 1334 | globalVariables = append(globalVariables, v) |
| 1335 | } |
| 1336 | |
| 1337 | sort.Sort(&variableSorter{c.pkgNames, globalVariables}) |
| 1338 | |
| 1339 | for _, v := range globalVariables { |
| 1340 | if !visited[v] { |
| 1341 | err := walk(v) |
| 1342 | if err != nil { |
| 1343 | return nil |
| 1344 | } |
| 1345 | } |
| 1346 | } |
| 1347 | |
| 1348 | return nil |
| 1349 | } |
| 1350 | |
| 1351 | func (c *Context) writeGlobalPools(nw *ninjaWriter) error { |
| 1352 | for pool, def := range c.globalPools { |
| 1353 | name := pool.fullName(c.pkgNames) |
| 1354 | err := def.WriteTo(nw, name) |
| 1355 | if err != nil { |
| 1356 | return err |
| 1357 | } |
| 1358 | |
| 1359 | err = nw.BlankLine() |
| 1360 | if err != nil { |
| 1361 | return err |
| 1362 | } |
| 1363 | } |
| 1364 | |
| 1365 | return nil |
| 1366 | } |
| 1367 | |
| 1368 | func (c *Context) writeGlobalRules(nw *ninjaWriter) error { |
| 1369 | for rule, def := range c.globalRules { |
| 1370 | name := rule.fullName(c.pkgNames) |
| 1371 | err := def.WriteTo(nw, name, c.pkgNames) |
| 1372 | if err != nil { |
| 1373 | return err |
| 1374 | } |
| 1375 | |
| 1376 | err = nw.BlankLine() |
| 1377 | if err != nil { |
| 1378 | return err |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | return nil |
| 1383 | } |
| 1384 | |
Jamie Gennis | 86179fe | 2014-06-11 16:27:16 -0700 | [diff] [blame] | 1385 | type moduleInfoSorter []*moduleInfo |
| 1386 | |
| 1387 | func (s moduleInfoSorter) Len() int { |
| 1388 | return len(s) |
| 1389 | } |
| 1390 | |
| 1391 | func (s moduleInfoSorter) Less(i, j int) bool { |
| 1392 | iName := s[i].properties.Name |
| 1393 | jName := s[j].properties.Name |
| 1394 | return iName < jName |
| 1395 | } |
| 1396 | |
| 1397 | func (s moduleInfoSorter) Swap(i, j int) { |
| 1398 | s[i], s[j] = s[j], s[i] |
| 1399 | } |
| 1400 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1401 | func (c *Context) writeAllModuleActions(nw *ninjaWriter) error { |
| 1402 | headerTemplate := template.New("moduleHeader") |
| 1403 | _, err := headerTemplate.Parse(moduleHeaderTemplate) |
| 1404 | if err != nil { |
| 1405 | // This is a programming error. |
| 1406 | panic(err) |
| 1407 | } |
| 1408 | |
Jamie Gennis | 86179fe | 2014-06-11 16:27:16 -0700 | [diff] [blame] | 1409 | infos := make([]*moduleInfo, 0, len(c.moduleInfo)) |
| 1410 | for _, info := range c.moduleInfo { |
| 1411 | infos = append(infos, info) |
| 1412 | } |
| 1413 | sort.Sort(moduleInfoSorter(infos)) |
| 1414 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1415 | buf := bytes.NewBuffer(nil) |
| 1416 | |
Jamie Gennis | 86179fe | 2014-06-11 16:27:16 -0700 | [diff] [blame] | 1417 | for _, info := range infos { |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1418 | buf.Reset() |
Jamie Gennis | 1ebd3b8 | 2014-06-04 15:33:08 -0700 | [diff] [blame] | 1419 | |
| 1420 | // In order to make the bootstrap build manifest independent of the |
| 1421 | // build dir we need to output the Blueprints file locations in the |
| 1422 | // comments as paths relative to the source directory. |
| 1423 | relPos := info.pos |
Jamie Gennis | ec70128 | 2014-06-12 20:06:31 -0700 | [diff] [blame] | 1424 | relPos.Filename = info.relBlueprintsFile |
Jamie Gennis | 1ebd3b8 | 2014-06-04 15:33:08 -0700 | [diff] [blame] | 1425 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1426 | // Get the name and location of the factory function for the module. |
| 1427 | factory := c.moduleFactories[info.typeName] |
| 1428 | factoryFunc := runtime.FuncForPC(reflect.ValueOf(factory).Pointer()) |
| 1429 | factoryName := factoryFunc.Name() |
| 1430 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1431 | infoMap := map[string]interface{}{ |
| 1432 | "properties": info.properties, |
| 1433 | "typeName": info.typeName, |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1434 | "goFactory": factoryName, |
Jamie Gennis | 1ebd3b8 | 2014-06-04 15:33:08 -0700 | [diff] [blame] | 1435 | "pos": relPos, |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1436 | } |
| 1437 | err = headerTemplate.Execute(buf, infoMap) |
| 1438 | if err != nil { |
| 1439 | return err |
| 1440 | } |
| 1441 | |
| 1442 | err = nw.Comment(buf.String()) |
| 1443 | if err != nil { |
| 1444 | return err |
| 1445 | } |
| 1446 | |
| 1447 | err = nw.BlankLine() |
| 1448 | if err != nil { |
| 1449 | return err |
| 1450 | } |
| 1451 | |
| 1452 | err = c.writeLocalBuildActions(nw, &info.actionDefs) |
| 1453 | if err != nil { |
| 1454 | return err |
| 1455 | } |
| 1456 | |
| 1457 | err = nw.BlankLine() |
| 1458 | if err != nil { |
| 1459 | return err |
| 1460 | } |
| 1461 | } |
| 1462 | |
| 1463 | return nil |
| 1464 | } |
| 1465 | |
| 1466 | func (c *Context) writeAllSingletonActions(nw *ninjaWriter) error { |
| 1467 | headerTemplate := template.New("singletonHeader") |
| 1468 | _, err := headerTemplate.Parse(singletonHeaderTemplate) |
| 1469 | if err != nil { |
| 1470 | // This is a programming error. |
| 1471 | panic(err) |
| 1472 | } |
| 1473 | |
| 1474 | buf := bytes.NewBuffer(nil) |
| 1475 | |
Jamie Gennis | 86179fe | 2014-06-11 16:27:16 -0700 | [diff] [blame] | 1476 | singletonNames := make([]string, 0, len(c.singletonInfo)) |
| 1477 | for name := range c.singletonInfo { |
| 1478 | singletonNames = append(singletonNames, name) |
| 1479 | } |
| 1480 | sort.Strings(singletonNames) |
| 1481 | |
| 1482 | for _, name := range singletonNames { |
| 1483 | info := c.singletonInfo[name] |
| 1484 | |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1485 | // Get the name of the factory function for the module. |
| 1486 | factory := info.factory |
| 1487 | factoryFunc := runtime.FuncForPC(reflect.ValueOf(factory).Pointer()) |
| 1488 | factoryName := factoryFunc.Name() |
| 1489 | |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1490 | buf.Reset() |
| 1491 | infoMap := map[string]interface{}{ |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1492 | "name": name, |
| 1493 | "goFactory": factoryName, |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1494 | } |
| 1495 | err = headerTemplate.Execute(buf, infoMap) |
| 1496 | if err != nil { |
| 1497 | return err |
| 1498 | } |
| 1499 | |
| 1500 | err = nw.Comment(buf.String()) |
| 1501 | if err != nil { |
| 1502 | return err |
| 1503 | } |
| 1504 | |
| 1505 | err = nw.BlankLine() |
| 1506 | if err != nil { |
| 1507 | return err |
| 1508 | } |
| 1509 | |
| 1510 | err = c.writeLocalBuildActions(nw, &info.actionDefs) |
| 1511 | if err != nil { |
| 1512 | return err |
| 1513 | } |
| 1514 | |
| 1515 | err = nw.BlankLine() |
| 1516 | if err != nil { |
| 1517 | return err |
| 1518 | } |
| 1519 | } |
| 1520 | |
| 1521 | return nil |
| 1522 | } |
| 1523 | |
| 1524 | func (c *Context) writeLocalBuildActions(nw *ninjaWriter, |
| 1525 | defs *localBuildActions) error { |
| 1526 | |
| 1527 | // Write the local variable assignments. |
| 1528 | for _, v := range defs.variables { |
| 1529 | // A localVariable doesn't need the package names or config to |
| 1530 | // determine its name or value. |
| 1531 | name := v.fullName(nil) |
| 1532 | value, err := v.value(nil) |
| 1533 | if err != nil { |
| 1534 | panic(err) |
| 1535 | } |
| 1536 | err = nw.Assign(name, value.Value(c.pkgNames)) |
| 1537 | if err != nil { |
| 1538 | return err |
| 1539 | } |
| 1540 | } |
| 1541 | |
| 1542 | if len(defs.variables) > 0 { |
| 1543 | err := nw.BlankLine() |
| 1544 | if err != nil { |
| 1545 | return err |
| 1546 | } |
| 1547 | } |
| 1548 | |
| 1549 | // Write the local rules. |
| 1550 | for _, r := range defs.rules { |
| 1551 | // A localRule doesn't need the package names or config to determine |
| 1552 | // its name or definition. |
| 1553 | name := r.fullName(nil) |
| 1554 | def, err := r.def(nil) |
| 1555 | if err != nil { |
| 1556 | panic(err) |
| 1557 | } |
| 1558 | |
| 1559 | err = def.WriteTo(nw, name, c.pkgNames) |
| 1560 | if err != nil { |
| 1561 | return err |
| 1562 | } |
| 1563 | |
| 1564 | err = nw.BlankLine() |
| 1565 | if err != nil { |
| 1566 | return err |
| 1567 | } |
| 1568 | } |
| 1569 | |
| 1570 | // Write the build definitions. |
| 1571 | for _, buildDef := range defs.buildDefs { |
| 1572 | err := buildDef.WriteTo(nw, c.pkgNames) |
| 1573 | if err != nil { |
| 1574 | return err |
| 1575 | } |
| 1576 | |
| 1577 | if len(buildDef.Args) > 0 { |
| 1578 | err = nw.BlankLine() |
| 1579 | if err != nil { |
| 1580 | return err |
| 1581 | } |
| 1582 | } |
| 1583 | } |
| 1584 | |
| 1585 | return nil |
| 1586 | } |
| 1587 | |
| 1588 | var fileHeaderTemplate = `****************************************************************************** |
| 1589 | *** This file is generated and should not be edited *** |
| 1590 | ****************************************************************************** |
| 1591 | {{if .Pkgs}} |
| 1592 | This file contains variables, rules, and pools with name prefixes indicating |
| 1593 | they were generated by the following Go packages: |
| 1594 | {{range .Pkgs}} |
| 1595 | {{.PkgName}} [from Go package {{.PkgPath}}]{{end}}{{end}} |
| 1596 | |
| 1597 | ` |
| 1598 | |
| 1599 | var moduleHeaderTemplate = `# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # |
| 1600 | Module: {{.properties.Name}} |
| 1601 | Type: {{.typeName}} |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1602 | Factory: {{.goFactory}} |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1603 | Defined: {{.pos}} |
| 1604 | ` |
| 1605 | |
| 1606 | var singletonHeaderTemplate = `# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # |
| 1607 | Singleton: {{.name}} |
Jamie Gennis | 7d5b2f8 | 2014-09-24 17:51:52 -0700 | [diff] [blame^] | 1608 | Factory: {{.goFactory}} |
Jamie Gennis | 1bc967e | 2014-05-27 16:34:41 -0700 | [diff] [blame] | 1609 | ` |