1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
17 # Load nit source files and build the associated model
21 # FIXME split this module into submodules
22 # FIXME add missing error checks
32 private import more_collections
36 redef class ToolContext
38 var opt_path
: OptionArray = new OptionArray("Set include path for loaders (may be used more than once)", "-I", "--path")
40 # Option --only-metamodel
41 var opt_only_metamodel
: OptionBool = new OptionBool("Stop after meta-model processing", "--only-metamodel")
44 var opt_only_parse
: OptionBool = new OptionBool("Only proceed to parse step of loaders", "--only-parse")
46 # Option --ignore-visibility
47 var opt_ignore_visibility
: OptionBool = new OptionBool("Do not check, and produce errors, on visibility issues.", "--ignore-visibility")
52 option_context
.add_option
(opt_path
, opt_only_parse
, opt_only_metamodel
, opt_ignore_visibility
)
55 fun modelbuilder
: ModelBuilder do return modelbuilder_real
.as(not null)
56 private var modelbuilder_real
: nullable ModelBuilder = null
58 # Run `process_mainmodule` on all phases
59 fun run_global_phases
(mmodules
: Array[MModule])
61 assert not mmodules
.is_empty
63 if mmodules
.length
== 1 then
64 mainmodule
= mmodules
.first
66 # We need a main module, so we build it by importing all modules
67 mainmodule
= new MModule(modelbuilder
.model
, null, mmodules
.first
.name
, new Location(mmodules
.first
.location
.file
, 0, 0, 0, 0))
68 mainmodule
.is_fictive
= true
69 mainmodule
.set_imported_mmodules
(mmodules
)
71 for phase
in phases_list
do
72 if phase
.disabled
then continue
73 phase
.process_mainmodule
(mainmodule
, mmodules
)
79 # Specific action to execute on the whole program.
80 # Called by the `ToolContext::run_global_phases`.
82 # `mainmodule` is the main module of the program.
83 # It could be an implicit module (called like the first given_mmodules).
85 # `given_modules` is the list of explicitely requested modules.
86 # from the command-line for instance.
88 # REQUIRE: `not given_modules.is_empty`
89 # REQUIRE: `(given_modules.length == 1) == (mainmodule == given_modules.first)`
92 fun process_mainmodule
(mainmodule
: MModule, given_mmodules
: SequenceRead[MModule]) do end
96 # A model builder knows how to load nit source files and build the associated model
98 # The model where new modules, classes and properties are added
101 # The toolcontext used to control the interaction with the user (getting options and displaying messages)
102 var toolcontext
: ToolContext
104 # Run phases on all loaded modules
107 var mmodules
= model
.mmodules
.to_a
108 model
.mmodule_importation_hierarchy
.sort
(mmodules
)
109 var nmodules
= new Array[AModule]
110 for mm
in mmodules
do
111 nmodules
.add
(mmodule2nmodule
[mm
])
113 toolcontext
.run_phases
(nmodules
)
115 if toolcontext
.opt_only_metamodel
.value
then
116 self.toolcontext
.info
("*** ONLY METAMODEL", 1)
121 # Instantiate a modelbuilder for a model and a toolcontext
122 # Important, the options of the toolcontext must be correctly set (parse_option already called)
123 init(model
: Model, toolcontext
: ToolContext)
126 self.toolcontext
= toolcontext
127 assert toolcontext
.modelbuilder_real
== null
128 toolcontext
.modelbuilder_real
= self
130 # Setup the paths value
131 paths
.append
(toolcontext
.opt_path
.value
)
133 var path_env
= "NIT_PATH".environ
134 if not path_env
.is_empty
then
135 paths
.append
(path_env
.split_with
(':'))
138 var nit_dir
= toolcontext
.nit_dir
139 if nit_dir
!= null then
140 var libname
= "{nit_dir}/lib"
141 if libname
.file_exists
then paths
.add
(libname
)
145 # Load a bunch of modules.
146 # `modules` can contains filenames or module names.
147 # Imported modules are automatically loaded and modelized.
148 # The result is the corresponding model elements.
149 # Errors and warnings are printed with the toolcontext.
151 # Note: class and property model element are not analysed.
152 fun parse
(modules
: Sequence[String]): Array[MModule]
155 # Parse and recursively load
156 self.toolcontext
.info
("*** PARSE ***", 1)
157 var mmodules
= new ArraySet[MModule]
159 var nmodule
= self.load_module
(a
)
160 if nmodule
== null then continue # Skip error
161 mmodules
.add
(nmodule
.mmodule
.as(not null))
164 self.toolcontext
.info
("*** END PARSE: {time1-time0} ***", 2)
166 self.toolcontext
.check_errors
168 if toolcontext
.opt_only_parse
.value
then
169 self.toolcontext
.info
("*** ONLY PARSE...", 1)
176 # Return a class named `name` visible by the module `mmodule`.
177 # Visibility in modules is correctly handled.
178 # If no such a class exists, then null is returned.
179 # If more than one class exists, then an error on `anode` is displayed and null is returned.
180 # FIXME: add a way to handle class name conflict
181 fun try_get_mclass_by_name
(anode
: ANode, mmodule
: MModule, name
: String): nullable MClass
183 var classes
= model
.get_mclasses_by_name
(name
)
184 if classes
== null then
188 var res
: nullable MClass = null
189 for mclass
in classes
do
190 if not mmodule
.in_importation
<= mclass
.intro_mmodule
then continue
191 if not mmodule
.is_visible
(mclass
.intro_mmodule
, mclass
.visibility
) then continue
195 error
(anode
, "Ambigous class name '{name}'; conflict between {mclass.full_name} and {res.full_name}")
202 # Return a property named `name` on the type `mtype` visible in the module `mmodule`.
203 # Visibility in modules is correctly handled.
204 # Protected properties are returned (it is up to the caller to check and reject protected properties).
205 # If no such a property exists, then null is returned.
206 # If more than one property exists, then an error on `anode` is displayed and null is returned.
207 # FIXME: add a way to handle property name conflict
208 fun try_get_mproperty_by_name2
(anode
: ANode, mmodule
: MModule, mtype
: MType, name
: String): nullable MProperty
210 var props
= self.model
.get_mproperties_by_name
(name
)
211 if props
== null then
215 var cache
= self.try_get_mproperty_by_name2_cache
[mmodule
, mtype
, name
]
216 if cache
!= null then return cache
218 var res
: nullable MProperty = null
219 var ress
: nullable Array[MProperty] = null
220 for mprop
in props
do
221 if not mtype
.has_mproperty
(mmodule
, mprop
) then continue
222 if not mmodule
.is_visible
(mprop
.intro_mclassdef
.mmodule
, mprop
.visibility
) then continue
228 # Two global properties?
229 # First, special case for init, keep the most specific ones
230 if res
isa MMethod and mprop
isa MMethod and res
.is_init
and mprop
.is_init
then
231 var restype
= res
.intro_mclassdef
.bound_mtype
232 var mproptype
= mprop
.intro_mclassdef
.bound_mtype
233 if mproptype
.is_subtype
(mmodule
, null, restype
) then
234 # found a most specific constructor, so keep it
240 # Ok, just keep all prop in the ress table
242 ress
= new Array[MProperty]
249 if ress
!= null and res
isa MMethod and res
.is_init
then
250 # special case forinit again
251 var restype
= res
.intro_mclassdef
.bound_mtype
252 var ress2
= new Array[MProperty]
254 var mproptype
= mprop
.intro_mclassdef
.bound_mtype
255 if not restype
.is_subtype
(mmodule
, null, mproptype
) then
257 else if not mprop
isa MMethod or not mprop
.is_init
then
261 if ress2
.is_empty
then
270 assert ress
.length
> 1
271 var s
= new Array[String]
272 for mprop
in ress
do s
.add mprop
.full_name
273 self.error
(anode
, "Ambigous property name '{name}' for {mtype}; conflict between {s.join(" and ")}")
276 self.try_get_mproperty_by_name2_cache
[mmodule
, mtype
, name
] = res
280 private var try_get_mproperty_by_name2_cache
: HashMap3[MModule, MType, String, nullable MProperty] = new HashMap3[MModule, MType, String, nullable MProperty]
283 # Alias for try_get_mproperty_by_name2(anode, mclassdef.mmodule, mclassdef.mtype, name)
284 fun try_get_mproperty_by_name
(anode
: ANode, mclassdef
: MClassDef, name
: String): nullable MProperty
286 return try_get_mproperty_by_name2
(anode
, mclassdef
.mmodule
, mclassdef
.bound_mtype
, name
)
289 # The list of directories to search for top level modules
290 # The list is initially set with :
291 # * the toolcontext --path option
292 # * the NIT_PATH environment variable
293 # * `toolcontext.nit_dir`
294 # Path can be added (or removed) by the client
295 var paths
: Array[String] = new Array[String]
297 # Like (an used by) `get_mmodule_by_name` but just return the ModulePath
298 private fun search_mmodule_by_name
(anode
: ANode, mgroup
: nullable MGroup, name
: String): nullable ModulePath
300 # First, look in groups
303 var dirname
= c
.filepath
304 if dirname
== null then break # virtual group
305 if dirname
.has_suffix
(".nit") then break # singleton project
307 # Second, try the directory to find a file
308 var try_file
= dirname
+ "/" + name
+ ".nit"
309 if try_file
.file_exists
then
310 var res
= self.identify_file
(try_file
.simplify_path
)
315 # Third, try if the requested module is itself a group
316 try_file
= dirname
+ "/" + name
+ "/" + name
+ ".nit"
317 if try_file
.file_exists
then
318 var res
= self.identify_file
(try_file
.simplify_path
)
326 # Look at some known directories
327 var lookpaths
= self.paths
329 # Look in the directory of the group project also (even if not explicitely in the path)
330 if mgroup
!= null then
331 # path of the root group
332 var dirname
= mgroup
.mproject
.root
.filepath
333 if dirname
!= null then
334 dirname
= dirname
.join_path
("..").simplify_path
335 if not lookpaths
.has
(dirname
) and dirname
.file_exists
then
336 lookpaths
= lookpaths
.to_a
337 lookpaths
.add
(dirname
)
342 var candidate
= search_module_in_paths
(anode
.hot_location
, name
, lookpaths
)
344 if candidate
== null then
345 if mgroup
!= null then
346 error
(anode
, "Error: cannot find module {name} from {mgroup.name}. tried {lookpaths.join(", ")}")
348 error
(anode
, "Error: cannot find module {name}. tried {lookpaths.join(", ")}")
355 # Get a module by its short name; if required, the module is loaded, parsed and its hierarchies computed.
356 # If `mgroup` is set, then the module search starts from it up to the top level (see `paths`);
357 # if `mgroup` is null then the module is searched in the top level only.
358 # If no module exists or there is a name conflict, then an error on `anode` is displayed and null is returned.
359 fun get_mmodule_by_name
(anode
: ANode, mgroup
: nullable MGroup, name
: String): nullable MModule
361 var path
= search_mmodule_by_name
(anode
, mgroup
, name
)
362 if path
== null then return null # Forward error
363 var res
= self.load_module
(path
.filepath
)
364 if res
== null then return null # Forward error
365 return res
.mmodule
.as(not null)
368 # Search a module `name` from path `lookpaths`.
369 # If found, the path of the file is returned
370 private fun search_module_in_paths
(location
: nullable Location, name
: String, lookpaths
: Collection[String]): nullable ModulePath
372 var candidate
: nullable String = null
373 for dirname
in lookpaths
do
374 var try_file
= (dirname
+ "/" + name
+ ".nit").simplify_path
375 if try_file
.file_exists
then
376 if candidate
== null then
378 else if candidate
!= try_file
then
379 # try to disambiguate conflicting modules
380 var abs_candidate
= module_absolute_path
(candidate
)
381 var abs_try_file
= module_absolute_path
(try_file
)
382 if abs_candidate
!= abs_try_file
then
383 toolcontext
.error
(location
, "Error: conflicting module file for {name}: {candidate} {try_file}")
387 try_file
= (dirname
+ "/" + name
+ "/" + name
+ ".nit").simplify_path
388 if try_file
.file_exists
then
389 if candidate
== null then
391 else if candidate
!= try_file
then
392 # try to disambiguate conflicting modules
393 var abs_candidate
= module_absolute_path
(candidate
)
394 var abs_try_file
= module_absolute_path
(try_file
)
395 if abs_candidate
!= abs_try_file
then
396 toolcontext
.error
(location
, "Error: conflicting module file for {name}: {candidate} {try_file}")
401 if candidate
== null then return null
402 return identify_file
(candidate
)
405 # cache for `identify_file` by realpath
406 private var identified_files
= new HashMap[String, nullable ModulePath]
408 # Identify a source file
409 # Load the associated project and groups if required
410 private fun identify_file
(path
: String): nullable ModulePath
412 # special case for not a nit file
413 if path
.file_extension
!= "nit" then
414 # search in known -I paths
415 var res
= search_module_in_paths
(null, path
, self.paths
)
416 if res
!= null then return res
418 # Found nothins? maybe it is a group...
420 if path
.file_exists
then
421 var mgroup
= get_mgroup
(path
)
422 if mgroup
!= null then
423 var owner_path
= mgroup
.filepath
.join_path
(mgroup
.name
+ ".nit")
424 if owner_path
.file_exists
then candidate
= owner_path
428 if candidate
== null then
429 toolcontext
.error
(null, "Error: cannot find module `{path}`.")
435 # Fast track, the path is already known
436 var pn
= path
.basename
(".nit")
437 var rp
= module_absolute_path
(path
)
438 if identified_files
.has_key
(rp
) then return identified_files
[rp
]
441 var mgrouppath
= path
.join_path
("..").simplify_path
442 var mgroup
= get_mgroup
(mgrouppath
)
444 if mgroup
== null then
446 var mproject
= new MProject(pn
, model
)
447 mgroup
= new MGroup(pn
, mproject
, null) # same name for the root group
448 mgroup
.filepath
= path
449 mproject
.root
= mgroup
450 toolcontext
.info
("found project `{pn}` at {path}", 2)
453 var res
= new ModulePath(pn
, path
, mgroup
)
454 mgroup
.module_paths
.add
(res
)
456 identified_files
[rp
] = res
461 private var mgroups
= new HashMap[String, nullable MGroup]
463 # return the mgroup associated to a directory path
464 # if the directory is not a group null is returned
465 private fun get_mgroup
(dirpath
: String): nullable MGroup
467 var rdp
= module_absolute_path
(dirpath
)
468 if mgroups
.has_key
(rdp
) then
472 # Hack, a group is determined by:
473 # * the presence of a honomymous nit file
474 # * the fact that the directory is named `src`
475 var pn
= rdp
.basename
(".nit")
476 var mp
= dirpath
.join_path
(pn
+ ".nit").simplify_path
478 var dirpath2
= dirpath
479 if not mp
.file_exists
then
481 # With a src directory, the group name is the name of the parent directory
482 dirpath2
= rdp
.dirname
483 pn
= dirpath2
.basename
("")
489 # check parent directory
490 var parentpath
= dirpath
.join_path
("..").simplify_path
491 var parent
= get_mgroup
(parentpath
)
494 if parent
== null then
495 # no parent, thus new project
496 var mproject
= new MProject(pn
, model
)
497 mgroup
= new MGroup(pn
, mproject
, null) # same name for the root group
498 mproject
.root
= mgroup
499 toolcontext
.info
("found project `{mproject}` at {dirpath}", 2)
501 mgroup
= new MGroup(pn
, parent
.mproject
, parent
)
502 toolcontext
.info
("found sub group `{mgroup.full_name}` at {dirpath}", 2)
504 var readme
= dirpath2
.join_path
("README.md")
505 if not readme
.file_exists
then readme
= dirpath2
.join_path
("README")
506 if readme
.file_exists
then
508 var s
= new IFStream.open
(readme
)
510 mdoc
.content
.add
(s
.read_line
)
513 mdoc
.original_mentity
= mgroup
515 mgroup
.filepath
= dirpath
516 mgroups
[rdp
] = mgroup
520 # Transform relative paths (starting with '../') into absolute paths
521 private fun module_absolute_path
(path
: String): String do
522 return getcwd
.join_path
(path
).simplify_path
525 # Try to load a module AST using a path.
526 # Display an error if there is a problem (IO / lexer / parser) and return null
527 fun load_module_ast
(filename
: String): nullable AModule
529 if filename
.file_extension
!= "nit" then
530 self.toolcontext
.error
(null, "Error: file {filename} is not a valid nit module.")
533 if not filename
.file_exists
then
534 self.toolcontext
.error
(null, "Error: file {filename} not found.")
538 self.toolcontext
.info
("load module {filename}", 2)
541 var file
= new IFStream.open
(filename
)
542 var lexer
= new Lexer(new SourceFile(filename
, file
))
543 var parser
= new Parser(lexer
)
544 var tree
= parser
.parse
546 var mod_name
= filename
.basename
(".nit")
548 # Handle lexer and parser error
549 var nmodule
= tree
.n_base
550 if nmodule
== null then
551 var neof
= tree
.n_eof
552 assert neof
isa AError
553 error
(neof
, neof
.message
)
560 # Try to load a module and its imported modules using a path.
561 # Display an error if there is a problem (IO / lexer / parser / importation) and return null
562 # Note: usually, you do not need this method, use `get_mmodule_by_name` instead.
563 fun load_module
(filename
: String): nullable AModule
565 # Look for the module
566 var file
= identify_file
(filename
)
567 if file
== null then return null # forward error
569 # Already known and loaded? then return it
570 var mmodule
= file
.mmodule
571 if mmodule
!= null then
572 return mmodule2nmodule
[mmodule
]
576 var nmodule
= load_module_ast
(file
.filepath
)
577 if nmodule
== null then return null # forward error
579 # build the mmodule and load imported modules
580 mmodule
= build_a_mmodule
(file
.mgroup
, file
.name
, nmodule
)
582 if mmodule
== null then return null # forward error
584 # Update the file information
585 file
.mmodule
= mmodule
587 # Load imported module
588 build_module_importation
(nmodule
)
593 fun load_rt_module
(parent
: MModule, nmodule
: AModule, mod_name
: String): nullable AModule
596 var mmodule
= new MModule(model
, parent
.mgroup
, mod_name
, nmodule
.location
)
597 nmodule
.mmodule
= mmodule
598 nmodules
.add
(nmodule
)
599 self.mmodule2nmodule
[mmodule
] = nmodule
601 var imported_modules
= new Array[MModule]
603 imported_modules
.add
(parent
)
604 mmodule
.set_visibility_for
(parent
, intrude_visibility
)
606 mmodule
.set_imported_mmodules
(imported_modules
)
611 # Visit the AST and create the `MModule` object
612 private fun build_a_mmodule
(mgroup
: nullable MGroup, mod_name
: String, nmodule
: AModule): nullable MModule
614 # Check the module name
615 var decl
= nmodule
.n_moduledecl
617 #warning(nmodule, "Warning: Missing 'module' keyword") #FIXME: NOT YET FOR COMPATIBILITY
619 var decl_name
= decl
.n_name
.n_id
.text
620 if decl_name
!= mod_name
then
621 error
(decl
.n_name
, "Error: module name missmatch; declared {decl_name} file named {mod_name}")
626 var mmodule
= new MModule(model
, mgroup
, mod_name
, nmodule
.location
)
627 nmodule
.mmodule
= mmodule
628 nmodules
.add
(nmodule
)
629 self.mmodule2nmodule
[mmodule
] = nmodule
632 var ndoc
= decl
.n_doc
634 var mdoc
= ndoc
.to_mdoc
636 mdoc
.original_mentity
= mmodule
643 # Analysis the module importation and fill the module_importation_hierarchy
644 private fun build_module_importation
(nmodule
: AModule)
646 if nmodule
.is_importation_done
then return
647 nmodule
.is_importation_done
= true
648 var mmodule
= nmodule
.mmodule
.as(not null)
650 var imported_modules
= new Array[MModule]
651 for aimport
in nmodule
.n_imports
do
653 if not aimport
isa AStdImport then
656 var mgroup
= mmodule
.mgroup
657 if aimport
.n_name
.n_quad
!= null then mgroup
= null # Start from top level
658 for grp
in aimport
.n_name
.n_path
do
659 var path
= search_mmodule_by_name
(grp
, mgroup
, grp
.text
)
660 if path
== null then return # Skip error
663 var mod_name
= aimport
.n_name
.n_id
.text
664 var sup
= self.get_mmodule_by_name
(aimport
.n_name
, mgroup
, mod_name
)
665 if sup
== null then continue # Skip error
666 aimport
.mmodule
= sup
667 imported_modules
.add
(sup
)
668 var mvisibility
= aimport
.n_visibility
.mvisibility
669 if mvisibility
== protected_visibility
then
670 error
(aimport
.n_visibility
, "Error: only properties can be protected.")
673 if sup
== mmodule
then
674 error
(aimport
.n_name
, "Error: Dependency loop in module {mmodule}.")
676 if sup
.in_importation
< mmodule
then
677 error
(aimport
.n_name
, "Error: Dependency loop between modules {mmodule} and {sup}.")
680 mmodule
.set_visibility_for
(sup
, mvisibility
)
683 var mod_name
= "standard"
684 var sup
= self.get_mmodule_by_name
(nmodule
, null, mod_name
)
685 if sup
!= null then # Skip error
686 imported_modules
.add
(sup
)
687 mmodule
.set_visibility_for
(sup
, public_visibility
)
690 self.toolcontext
.info
("{mmodule} imports {imported_modules.join(", ")}", 3)
691 mmodule
.set_imported_mmodules
(imported_modules
)
694 # All the loaded modules
695 var nmodules
: Array[AModule] = new Array[AModule]
697 # Register the nmodule associated to each mmodule
698 # FIXME: why not refine the `MModule` class with a nullable attribute?
699 var mmodule2nmodule
: HashMap[MModule, AModule] = new HashMap[MModule, AModule]
701 # Helper function to display an error on a node.
702 # Alias for `self.toolcontext.error(n.hot_location, text)`
703 fun error
(n
: ANode, text
: String)
705 self.toolcontext
.error
(n
.hot_location
, text
)
708 # Helper function to display a warning on a node.
709 # Alias for: `self.toolcontext.warning(n.hot_location, text)`
710 fun warning
(n
: ANode, text
: String)
712 self.toolcontext
.warning
(n
.hot_location
, text
)
715 # Force to get the primitive method named `name` on the type `recv` or do a fatal error on `n`
716 fun force_get_primitive_method
(n
: ANode, name
: String, recv
: MClass, mmodule
: MModule): MMethod
718 var res
= mmodule
.try_get_primitive_method
(name
, recv
)
720 self.toolcontext
.fatal_error
(n
.hot_location
, "Fatal Error: {recv} must have a property named {name}.")
727 # placeholder to a module file identified but not always loaded in a project
728 private class ModulePath
729 # The name of the module
730 # (it's the basename of the filepath)
733 # The human path of the module
736 # The group (and the project) of the possible module
739 # The loaded module (if any)
740 var mmodule
: nullable MModule = null
742 redef fun to_s
do return filepath
746 # modules paths associated with the group
747 private var module_paths
= new Array[ModulePath]
750 redef class AStdImport
751 # The imported module once determined
752 var mmodule
: nullable MModule = null
756 # The associated MModule once build by a `ModelBuilder`
757 var mmodule
: nullable MModule
758 # Flag that indicate if the importation is already completed
759 var is_importation_done
: Bool = false
762 redef class AVisibility
763 # The visibility level associated with the AST node class
764 fun mvisibility
: MVisibility is abstract
766 redef class AIntrudeVisibility
767 redef fun mvisibility
do return intrude_visibility
769 redef class APublicVisibility
770 redef fun mvisibility
do return public_visibility
772 redef class AProtectedVisibility
773 redef fun mvisibility
do return protected_visibility
775 redef class APrivateVisibility
776 redef fun mvisibility
do return private_visibility
780 private var mdoc_cache
: nullable MDoc
784 if res
!= null then return res
786 for c
in n_comment
do
788 if text
.length
< 2 then
792 assert text
.chars
[0] == '#'
793 if text
.chars
[1] == ' ' then
794 text
= text
.substring_from
(2) # eat starting `#` and space
796 text
= text
.substring_from
(1) # eat atarting `#` only
798 if text
.chars
.last
== '\n' then text
= text
.substring
(0, text
.length-1
) # drop \n
799 res
.content
.add
(text
)