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.
18 module abstract_compiler
22 import auto_super_init
25 # Add compiling options
26 redef class ToolContext
28 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
30 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
32 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
34 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
36 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
38 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
39 # --no-check-covariance
40 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
41 # --no-check-initialization
42 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
44 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
46 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
48 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
49 # --typing-test-metrics
50 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
55 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_make_flags
, self.opt_hardening
, self.opt_no_shortcut_range
)
56 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_initialization
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_other
)
57 self.option_context
.add_option
(self.opt_typing_test_metrics
)
61 redef class ModelBuilder
62 # The list of directories to search for included C headers (-I for C compilers)
63 # The list is initially set with :
64 # * the toolcontext --cc-path option
65 # * the NIT_CC_PATH environment variable
66 # * some heuristics including the NIT_DIR environment variable and the progname of the process
67 # Path can be added (or removed) by the client
68 var cc_paths
= new Array[String]
70 redef init(model
, toolcontext
)
74 # Look for the the Nit clib path
75 var path_env
= "NIT_DIR".environ
76 if not path_env
.is_empty
then
77 var libname
= "{path_env}/clib"
78 if libname
.file_exists
then cc_paths
.add
(libname
)
81 var libname
= "{sys.program_name.dirname}/../clib"
82 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
84 if cc_paths
.is_empty
then
85 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
88 # Add user defined cc_paths
89 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
91 path_env
= "NIT_CC_PATH".environ
92 if not path_env
.is_empty
then
93 cc_paths
.append
(path_env
.split_with
(':'))
98 protected fun write_and_make
(compiler
: AbstractCompiler)
100 var mainmodule
= compiler
.mainmodule
102 # Generate the .h and .c files
103 # A single C file regroups many compiled rumtime functions
104 # Note that we do not try to be clever an a small change in a Nit source file may change the content of all the generated .c files
106 self.toolcontext
.info
("*** WRITING C ***", 1)
110 var outname
= self.toolcontext
.opt_output
.value
111 if outname
== null then
112 outname
= "{mainmodule.name}"
115 var hfilename
= compiler
.header
.file
.name
+ ".h"
116 var hfilepath
= ".nit_compile/{hfilename}"
117 var h
= new OFStream.open
(hfilepath
)
118 for l
in compiler
.header
.decl_lines
do
122 for l
in compiler
.header
.lines
do
128 var cfiles
= new Array[String]
130 for f
in compiler
.files
do
132 var hfile
: nullable OFStream = null
134 var cfilename
= ".nit_compile/{f.name}.0.h"
135 hfile
= new OFStream.open
(cfilename
)
136 hfile
.write
"#include \"{hfilename}\
"\n"
137 for key
in f
.required_declarations
do
138 if not compiler
.provided_declarations
.has_key
(key
) then
139 print
"No provided declaration for {key}"
142 hfile
.write compiler
.provided_declarations
[key
]
146 var file
: nullable OFStream = null
147 for vis
in f
.writers
do
148 if vis
== compiler
.header
then continue
149 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
150 if total_lines
== 0 then continue
152 if file
== null or count
> 10000 then
154 if file
!= null then file
.close
155 cfilename
= ".nit_compile/{f.name}.{i}.c"
156 self.toolcontext
.info
("new C source files to compile: {cfilename}", 3)
157 cfiles
.add
(cfilename
)
158 file
= new OFStream.open
(cfilename
)
159 file
.write
"#include \"{f.name}.0.h\
"\n"
162 for l
in vis
.decl_lines
do
166 for l
in vis
.lines
do
171 if file
!= null then file
.close
174 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
176 # Generate the Makefile
178 var makename
= ".nit_compile/{mainmodule.name}.mk"
179 var makefile
= new OFStream.open
(makename
)
183 #p = "..".join_path(p)
184 cc_includes
+= " -I \"" + p + "\
""
186 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc\n\n")
187 makefile
.write
("all: {outname}\n\n")
189 var ofiles
= new Array[String]
190 # Compile each generated file
192 var o
= f
.strip_extension
(".c") + ".o"
193 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
197 # Add gc_choser.h to aditionnal bodies
198 var gc_chooser
= new ExternCFile("{cc_paths.first}/gc_chooser.c", "-DWITH_LIBGC")
199 compiler
.extern_bodies
.add
(gc_chooser
)
201 # Compile each required extern body into a specific .o
202 for f
in compiler
.extern_bodies
do
203 var basename
= f
.filename
.basename
(".c")
204 var o
= ".nit_compile/{basename}.extern.o"
205 makefile
.write
("{o}: {f.filename}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {f.filename}\n\n")
210 makefile
.write
("{outname}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outname} {ofiles.join(" ")} $(LDLIBS)\n\n")
212 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
214 self.toolcontext
.info
("Generated makefile: {makename}", 2)
217 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
219 # Execute the Makefile
221 if self.toolcontext
.opt_no_cc
.value
then return
224 self.toolcontext
.info
("*** COMPILING C ***", 1)
225 var makeflags
= self.toolcontext
.opt_make_flags
.value
226 if makeflags
== null then makeflags
= ""
227 self.toolcontext
.info
("make -B -f {makename} -j 4 {makeflags}", 2)
230 if self.toolcontext
.verbose_level
>= 3 then
231 res
= sys
.system
("make -B -f {makename} -j 4 {makeflags} 2>&1")
233 res
= sys
.system
("make -B -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
236 toolcontext
.error
(null, "make failed! Error code: {res}.")
240 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
244 # Singleton that store the knowledge about the compilation process
245 abstract class AbstractCompiler
246 type VISITOR: AbstractCompilerVisitor
248 # The main module of the program currently compiled
249 # Is assigned during the separate compilation
250 var mainmodule
: MModule writable
252 # The real main module of the program
253 var realmainmodule
: MModule
255 # The modeulbuilder used to know the model and the AST
256 var modelbuilder
: ModelBuilder protected writable
258 # Is hardening asked? (see --hardening)
259 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
261 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
263 self.mainmodule
= mainmodule
264 self.realmainmodule
= mainmodule
265 self.modelbuilder
= modelbuilder
268 # Force the creation of a new file
269 # The point is to avoid contamination between must-be-compiled-separately files
270 fun new_file
(name
: String): CodeFile
272 var f
= new CodeFile(name
)
277 # The list of all associated files
278 # Used to generate .c files
279 var files
: List[CodeFile] = new List[CodeFile]
281 # Initialize a visitor specific for a compiler engine
282 fun new_visitor
: VISITOR is abstract
284 # Where global declaration are stored (the main .h)
285 var header
: CodeWriter writable
287 # Provide a declaration that can be requested (before or latter) by a visitor
288 fun provide_declaration
(key
: String, s
: String)
290 if self.provided_declarations
.has_key
(key
) then
291 assert self.provided_declarations
[key
] == s
293 self.provided_declarations
[key
] = s
296 private var provided_declarations
= new HashMap[String, String]
299 # This method call compile_header_strucs method that has to be refined
300 fun compile_header
do
302 self.header
.add_decl
("#include <stdlib.h>")
303 self.header
.add_decl
("#include <stdio.h>")
304 self.header
.add_decl
("#include <string.h>")
305 self.header
.add_decl
("#include <gc_chooser.h>")
307 compile_header_structs
309 # Global variable used by the legacy native interface
310 self.header
.add_decl
("extern int glob_argc;")
311 self.header
.add_decl
("extern char **glob_argv;")
312 self.header
.add_decl
("extern val *glob_sys;")
315 # Declaration of structures the live Nit types
316 protected fun compile_header_structs
is abstract
318 # Generate the main C function.
320 # * allocate the Sys object if it exists
321 # * call init if is exists
322 # * call main if it exists
323 fun compile_main_function
325 var v
= self.new_visitor
326 v
.add_decl
("int glob_argc;")
327 v
.add_decl
("char **glob_argv;")
328 v
.add_decl
("val *glob_sys;")
330 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
331 for tag
in count_type_test_tags
do
332 v
.add_decl
("long count_type_test_resolved_{tag};")
333 v
.add_decl
("long count_type_test_unresolved_{tag};")
334 v
.add_decl
("long count_type_test_skipped_{tag};")
335 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
336 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
337 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
340 v
.add_decl
("int main(int argc, char** argv) \{")
341 v
.add
("glob_argc = argc; glob_argv = argv;")
342 v
.add
("initialize_gc_option();")
343 var main_type
= mainmodule
.sys_type
344 if main_type
!= null then
345 var mainmodule
= v
.compiler
.mainmodule
346 var glob_sys
= v
.init_instance
(main_type
)
347 v
.add
("glob_sys = {glob_sys};")
348 var main_init
= mainmodule
.try_get_primitive_method
("init", main_type
.mclass
)
349 if main_init
!= null then
350 v
.send
(main_init
, [glob_sys
])
352 var main_method
= mainmodule
.try_get_primitive_method
("main", main_type
.mclass
)
353 if main_method
!= null then
354 v
.send
(main_method
, [glob_sys
])
358 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
359 v
.add_decl
("long count_type_test_resolved_total = 0;")
360 v
.add_decl
("long count_type_test_unresolved_total = 0;")
361 v
.add_decl
("long count_type_test_skipped_total = 0;")
362 v
.add_decl
("long count_type_test_total_total = 0;")
363 for tag
in count_type_test_tags
do
364 v
.add_decl
("long count_type_test_total_{tag};")
365 v
.add
("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
366 v
.add
("count_type_test_resolved_total += count_type_test_resolved_{tag};")
367 v
.add
("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
368 v
.add
("count_type_test_skipped_total += count_type_test_skipped_{tag};")
369 v
.add
("count_type_test_total_total += count_type_test_total_{tag};")
371 v
.add
("printf(\"# dynamic count_type_test: total %l\\n\");")
372 v
.add
("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\
");")
373 var tags
= count_type_test_tags
.to_a
376 v
.add
("printf(\"{tag}\
");")
377 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
378 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
379 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\
", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
380 v
.add
("printf(\"\\t
%ld
(%.2f
%%)\\n\
", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
387 # List of additional .c files required to compile (native interface)
388 var extern_bodies
= new Array[ExternCFile]
390 # This is used to avoid adding an extern file more than once
391 private var seen_extern
= new ArraySet[String]
393 # Generate code that check if an instance is correctly initialized
394 fun generate_check_init_instance
(mtype
: MClassType) is abstract
396 # Generate code that initialize the attributes on a new instance
397 fun generate_init_attr
(v
: VISITOR, recv
: RuntimeVariable, mtype
: MClassType)
399 var cds
= mtype
.collect_mclassdefs
(self.mainmodule
).to_a
400 self.mainmodule
.linearize_mclassdefs
(cds
)
402 var n
= self.modelbuilder
.mclassdef2nclassdef
[cd
]
403 for npropdef
in n
.n_propdefs
do
404 if npropdef
isa AAttrPropdef then
405 npropdef
.init_expr
(v
, recv
)
411 # Generate code that check if an attribute is correctly initialized
412 fun generate_check_attr
(v
: VISITOR, recv
: RuntimeVariable, mtype
: MClassType)
414 var cds
= mtype
.collect_mclassdefs
(self.mainmodule
).to_a
415 self.mainmodule
.linearize_mclassdefs
(cds
)
417 var n
= self.modelbuilder
.mclassdef2nclassdef
[cd
]
418 for npropdef
in n
.n_propdefs
do
419 if npropdef
isa AAttrPropdef then
420 npropdef
.check_expr
(v
, recv
)
428 var count_type_test_tags
: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
429 var count_type_test_resolved
: HashMap[String, Int] = init_count_type_test_tags
430 var count_type_test_unresolved
: HashMap[String, Int] = init_count_type_test_tags
431 var count_type_test_skipped
: HashMap[String, Int] = init_count_type_test_tags
433 protected fun init_count_type_test_tags
: HashMap[String, Int]
435 var res
= new HashMap[String, Int]
436 for tag
in count_type_test_tags
do
442 # Display stats about compilation process
444 # * type tests against resolved types (`x isa Collection[Animal]`)
445 # * type tests against unresolved types (`x isa Collection[E]`)
446 # * type tests skipped
451 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
452 print
"# static count_type_test"
453 print
"\tresolved:\tunresolved\tskipped\ttotal"
454 var count_type_test_total
= init_count_type_test_tags
455 count_type_test_resolved
["total"] = 0
456 count_type_test_unresolved
["total"] = 0
457 count_type_test_skipped
["total"] = 0
458 count_type_test_total
["total"] = 0
459 for tag
in count_type_test_tags
do
460 count_type_test_total
[tag
] = count_type_test_resolved
[tag
] + count_type_test_unresolved
[tag
] + count_type_test_skipped
[tag
]
461 count_type_test_resolved
["total"] += count_type_test_resolved
[tag
]
462 count_type_test_unresolved
["total"] += count_type_test_unresolved
[tag
]
463 count_type_test_skipped
["total"] += count_type_test_skipped
[tag
]
464 count_type_test_total
["total"] += count_type_test_total
[tag
]
466 var count_type_test
= count_type_test_total
["total"]
467 var tags
= count_type_test_tags
.to_a
471 printn
"\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
472 printn
"\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
473 printn
"\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
474 printn
"\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
481 # Avoid division by zero by returning the string "n/a"
482 fun div
(a
,b
:Int):String
484 if b
== 0 then return "n/a"
485 return ((a
*10000/b
).to_f
/ 100.0).to_precision
(2)
489 # A file unit (may be more than one file if
490 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
493 var writers
= new Array[CodeWriter]
494 var required_declarations
= new HashSet[String]
497 # Where to store generated lines
500 var lines
: List[String] = new List[String]
501 var decl_lines
: List[String] = new List[String]
503 # Add a line in the main part of the generated C
504 fun add
(s
: String) do self.lines
.add
(s
)
507 # (used for local or global declaration)
508 fun add_decl
(s
: String) do self.decl_lines
.add
(s
)
513 file
.writers
.add
(self)
517 # A visitor on the AST of property definition that generate the C code.
518 abstract class AbstractCompilerVisitor
520 type COMPILER: AbstractCompiler
522 # The associated compiler
523 var compiler
: COMPILER
525 # The current visited AST node
526 var current_node
: nullable ANode writable = null
528 # The current `Frame`
529 var frame
: nullable Frame writable
531 # Alias for self.compiler.mainmodule.object_type
532 fun object_type
: MClassType do return self.compiler
.mainmodule
.object_type
534 # Alias for self.compiler.mainmodule.bool_type
535 fun bool_type
: MClassType do return self.compiler
.mainmodule
.bool_type
537 var writer
: CodeWriter
539 init(compiler
: COMPILER)
541 self.compiler
= compiler
542 self.writer
= new CodeWriter(compiler
.files
.last
)
545 # Force to get the primitive class named `name` or abort
546 fun get_class
(name
: String): MClass do return self.compiler
.mainmodule
.get_primitive_class
(name
)
548 # Force to get the primitive property named `name` in the instance `recv` or abort
549 fun get_property
(name
: String, recv
: MType): MMethod
551 assert recv
isa MClassType
552 return self.compiler
.modelbuilder
.force_get_primitive_method
(self.current_node
.as(not null), name
, recv
.mclass
, self.compiler
.mainmodule
)
555 fun compile_callsite
(callsite
: CallSite, args
: Array[RuntimeVariable]): nullable RuntimeVariable
557 return self.send
(callsite
.mproperty
, args
)
560 fun calloc_array
(ret_type
: MType, arguments
: Array[RuntimeVariable]) is abstract
562 fun native_array_def
(pname
: String, ret_type
: nullable MType, arguments
: Array[RuntimeVariable]) is abstract
564 # Transform varargs, in raw arguments, into a single argument of type `Array`
565 # Note: this method modify the given `args`
566 # If there is no vararg, then `args` is not modified.
567 fun varargize
(mpropdef
: MPropDef, msignature
: MSignature, args
: Array[RuntimeVariable])
569 var recv
= args
.first
570 var vararg_rank
= msignature
.vararg_rank
571 if vararg_rank
>= 0 then
572 assert args
.length
>= msignature
.arity
+ 1 # because of self
574 args
= new Array[RuntimeVariable]
576 args
.add
(rawargs
.first
) # recv
578 for i
in [0..vararg_rank
[ do
579 args
.add
(rawargs
[i
+1])
582 var vararg_lastrank
= vararg_rank
+ rawargs
.length-1-msignature
.arity
583 var vararg
= new Array[RuntimeVariable]
584 for i
in [vararg_rank
..vararg_lastrank
] do
585 vararg
.add
(rawargs
[i
+1])
588 var elttype
= msignature
.mparameters
[vararg_rank
].mtype
589 args
.add
(self.vararg_instance
(mpropdef
, recv
, vararg
, elttype
))
591 for i
in [vararg_lastrank
+1..rawargs
.length-1
[ do
592 args
.add
(rawargs
[i
+1])
595 rawargs
.add_all
(args
)
601 # Anchor a type to the main module and the current receiver
602 fun anchor
(mtype
: MType): MType
604 if not mtype
.need_anchor
then return mtype
605 return mtype
.anchor_to
(self.compiler
.mainmodule
, self.frame
.receiver
)
608 fun resolve_for
(mtype
: MType, recv
: RuntimeVariable): MType
610 if not mtype
.need_anchor
then return mtype
611 return mtype
.resolve_for
(recv
.mcasttype
, self.frame
.receiver
, self.compiler
.mainmodule
, true)
614 # Unsafely cast a value to a new type
615 # ie the result share the same C variable but my have a different mcasttype
616 # NOTE: if the adaptation is useless then `value` is returned as it.
617 # ENSURE: `(return).name == value.name`
618 fun autoadapt
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable
620 mtype
= self.anchor
(mtype
)
621 var valmtype
= value
.mcasttype
622 if valmtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
626 if valmtype
isa MNullableType and valmtype
.mtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
627 var res
= new RuntimeVariable(value
.name
, valmtype
, valmtype
.mtype
)
630 var res
= new RuntimeVariable(value
.name
, valmtype
, mtype
)
635 # Generate a super call from a method definition
636 fun supercall
(m
: MMethodDef, recvtype
: MClassType, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
638 fun adapt_signature
(m
: MMethodDef, args
: Array[RuntimeVariable]) is abstract
640 # Box or unbox a value to another type iff a C type conversion is needed
641 # ENSURE: result.mtype.ctype == mtype.ctype
642 fun autobox
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable is abstract
644 # Generate a polymorphic subtype test
645 fun type_test
(value
: RuntimeVariable, mtype
: MType, tag
: String): RuntimeVariable is abstract
647 # Generate the code required to dynamically check if 2 objects share the same runtime type
648 fun is_same_type_test
(value1
, value2
: RuntimeVariable): RuntimeVariable is abstract
650 # Generate a Nit "is" for two runtime_variables
651 fun equal_test
(value1
, value2
: RuntimeVariable): RuntimeVariable is abstract
655 # Generate a static call on a method definition
656 fun call
(m
: MMethodDef, recvtype
: MClassType, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
658 # Generate a polymorphic send for the method `m` and the arguments `args`
659 fun send
(m
: MMethod, args
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
661 # Generate a monomorphic send for the method `m`, the type `t` and the arguments `args`
662 fun monomorphic_send
(m
: MMethod, t
: MType, args
: Array[RuntimeVariable]): nullable RuntimeVariable
664 assert t
isa MClassType
665 var propdef
= m
.lookup_first_definition
(self.compiler
.mainmodule
, t
)
666 return self.call
(propdef
, t
, args
)
669 # Attributes handling
671 # Generate a polymorphic attribute is_set test
672 fun isset_attribute
(a
: MAttribute, recv
: RuntimeVariable): RuntimeVariable is abstract
674 # Generate a polymorphic attribute read
675 fun read_attribute
(a
: MAttribute, recv
: RuntimeVariable): RuntimeVariable is abstract
677 # Generate a polymorphic attribute write
678 fun write_attribute
(a
: MAttribute, recv
: RuntimeVariable, value
: RuntimeVariable) is abstract
682 # Add a check and an abort for a null reciever if needed
683 fun check_recv_notnull
(recv
: RuntimeVariable)
685 if self.compiler
.modelbuilder
.toolcontext
.opt_no_check_other
.value
then return
687 var maybenull
= recv
.mcasttype
isa MNullableType or recv
.mcasttype
isa MNullType
689 self.add
("if ({recv} == NULL) \{")
690 self.add_abort
("Reciever is null")
695 # Generate a check-init-instance
696 fun check_init_instance
(recv
: RuntimeVariable, mtype
: MClassType) is abstract
700 private var names
: HashSet[String] = new HashSet[String]
701 private var last
: Int = 0
703 # Return a new name based on `s` and unique in the visitor
704 fun get_name
(s
: String): String
706 if not self.names
.has
(s
) then
710 var i
= self.last
+ 1
713 if not self.names
.has
(s2
) then
722 # Return an unique and stable identifier associated with an escapemark
723 fun escapemark_name
(e
: nullable EscapeMark): String
726 if escapemark_names
.has_key
(e
) then return escapemark_names
[e
]
728 if name
== null then name
= "label"
729 name
= get_name
(name
)
730 escapemark_names
[e
] = name
734 private var escapemark_names
= new HashMap[EscapeMark, String]
736 # Return a "const char*" variable associated to the classname of the dynamic type of an object
737 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
738 fun class_name_string
(value
: RuntimeVariable): String is abstract
742 protected var variables
: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
744 # Return the local runtime_variable associated to a Nit local variable
745 fun variable
(variable
: Variable): RuntimeVariable
747 if self.variables
.has_key
(variable
) then
748 return self.variables
[variable
]
750 var name
= self.get_name
("var_{variable.name}")
751 var mtype
= variable
.declared_type
.as(not null)
752 mtype
= self.anchor
(mtype
)
753 var res
= new RuntimeVariable(name
, mtype
, mtype
)
754 self.add_decl
("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
755 self.variables
[variable
] = res
760 # Return a new uninitialized local runtime_variable
761 fun new_var
(mtype
: MType): RuntimeVariable
763 mtype
= self.anchor
(mtype
)
764 var name
= self.get_name
("var")
765 var res
= new RuntimeVariable(name
, mtype
, mtype
)
766 self.add_decl
("{mtype.ctype} {name} /* : {mtype} */;")
770 # Return a new uninitialized named runtime_variable
771 fun new_named_var
(mtype
: MType, name
: String): RuntimeVariable
773 mtype
= self.anchor
(mtype
)
774 var res
= new RuntimeVariable(name
, mtype
, mtype
)
775 self.add_decl
("{mtype.ctype} {name} /* : {mtype} */;")
779 # Correctly assign a left and a right value
780 # Boxing and unboxing is performed if required
781 fun assign
(left
, right
: RuntimeVariable)
783 right
= self.autobox
(right
, left
.mtype
)
784 self.add
("{left} = {right};")
789 # Generate a alloc-instance + init-attributes
790 fun init_instance
(mtype
: MClassType): RuntimeVariable is abstract
792 # Generate an integer value
793 fun int_instance
(value
: Int): RuntimeVariable
795 var res
= self.new_var
(self.get_class
("Int").mclass_type
)
796 self.add
("{res} = {value};")
800 # Generate a string value
801 fun string_instance
(string
: String): RuntimeVariable
803 var mtype
= self.get_class
("String").mclass_type
804 var name
= self.get_name
("varonce")
805 self.add_decl
("static {mtype.ctype} {name};")
806 var res
= self.new_var
(mtype
)
807 self.add
("if ({name}) \{")
808 self.add
("{res} = {name};")
809 self.add
("\} else \{")
810 var nat
= self.new_var
(self.get_class
("NativeString").mclass_type
)
811 self.add
("{nat} = \"{string.escape_to_c}\
";")
812 var res2
= self.init_instance
(mtype
)
813 self.add
("{res} = {res2};")
814 var length
= self.int_instance
(string
.length
)
815 self.send
(self.get_property
("with_native", mtype
), [res
, nat
, length
])
816 self.check_init_instance
(res
, mtype
)
817 self.add
("{name} = {res};")
822 # Generate an array value
823 fun array_instance
(array
: Array[RuntimeVariable], elttype
: MType): RuntimeVariable is abstract
825 # Get an instance of a array for a vararg
826 fun vararg_instance
(mpropdef
: MPropDef, recv
: RuntimeVariable, varargs
: Array[RuntimeVariable], elttype
: MType): RuntimeVariable is abstract
830 # Add a line in the main part of the generated C
831 fun add
(s
: String) do self.writer
.lines
.add
(s
)
834 # (used for local or global declaration)
835 fun add_decl
(s
: String) do self.writer
.decl_lines
.add
(s
)
837 # Request the presence of a global declaration
838 fun require_declaration
(key
: String)
840 self.writer
.file
.required_declarations
.add
(key
)
843 # Add a declaration in the local-header
844 # The declaration is ensured to be present once
845 fun declare_once
(s
: String)
847 self.compiler
.provide_declaration
(s
, s
)
848 self.require_declaration
(s
)
851 # look for a needed .h and .c file for a given .nit source-file
852 # FIXME: bad API, parameter should be a `MModule`, not its source-file
853 fun add_extern
(file
: String)
855 file
= file
.strip_extension
(".nit")
856 var tryfile
= file
+ ".nit.h"
857 if tryfile
.file_exists
then
858 self.declare_once
("#include \"{"..".join_path(tryfile)}\
"")
860 tryfile
= file
+ "_nit.h"
861 if tryfile
.file_exists
then
862 self.declare_once
("#include \"{"..".join_path(tryfile)}\
"")
865 if self.compiler
.seen_extern
.has
(file
) then return
866 self.compiler
.seen_extern
.add
(file
)
867 tryfile
= file
+ ".nit.c"
868 if not tryfile
.file_exists
then
869 tryfile
= file
+ "_nit.c"
870 if not tryfile
.file_exists
then return
872 var f
= new ExternCFile(tryfile
, "")
873 self.compiler
.extern_bodies
.add
(f
)
876 # Return a new local runtime_variable initialized with the C expression `cexpr`.
877 fun new_expr
(cexpr
: String, mtype
: MType): RuntimeVariable
879 var res
= new_var
(mtype
)
880 self.add
("{res} = {cexpr};")
884 # Generate generic abort
885 # used by aborts, asserts, casts, etc.
886 fun add_abort
(message
: String)
888 if self.current_node
!= null and self.current_node
.location
.file
!= null then
889 self.add
("fprintf(stderr, \"Runtime error
: %s
(%s
:%d
)\\n\
", \"{message.escape_to_c}\
", \"{self.current_node.location.file.filename.escape_to_c}\
", {current_node.location.line_start});")
891 self.add
("fprintf(stderr, \"Runtime error
: %s\\n\
", \"{message.escape_to_c}\
");")
896 # Generate a return with the value `s`
897 fun ret
(s
: RuntimeVariable)
899 self.assign
(self.frame
.returnvar
.as(not null), s
)
900 self.add
("goto {self.frame.returnlabel.as(not null)};")
903 # Compile a statement (if any)
904 fun stmt
(nexpr
: nullable AExpr)
906 if nexpr
== null then return
907 var old
= self.current_node
908 self.current_node
= nexpr
910 self.current_node
= old
913 # Compile an expression an return its result
914 # `mtype` is the expected return type, pass null if no specific type is expected.
915 fun expr
(nexpr
: AExpr, mtype
: nullable MType): RuntimeVariable
917 var old
= self.current_node
918 self.current_node
= nexpr
919 var res
= nexpr
.expr
(self).as(not null)
920 if mtype
!= null then
921 mtype
= self.anchor
(mtype
)
922 res
= self.autobox
(res
, mtype
)
924 res
= autoadapt
(res
, nexpr
.mtype
.as(not null))
925 var implicit_cast_to
= nexpr
.implicit_cast_to
926 if implicit_cast_to
!= null and not self.compiler
.modelbuilder
.toolcontext
.opt_no_check_autocast
.value
then
927 var castres
= self.type_test
(res
, implicit_cast_to
, "auto")
928 self.add
("if (!{castres}) \{")
929 self.add_abort
("Cast failed")
931 res
= autoadapt
(res
, implicit_cast_to
)
933 self.current_node
= old
937 # Alias for `self.expr(nexpr, self.bool_type)`
938 fun expr_bool
(nexpr
: AExpr): RuntimeVariable do return expr
(nexpr
, bool_type
)
940 # Safely show a debug message on the current node and repeat the message in the C code as a comment
941 fun debug
(message
: String)
943 var node
= self.current_node
949 self.add
("/* DEBUG: {message} */")
953 # A C function associated to a Nit method
954 # Because of customization, a given Nit method can be compiler more that once
955 abstract class AbstractRuntimeFunction
957 type COMPILER: AbstractCompiler
958 type VISITOR: AbstractCompilerVisitor
960 # The associated Nit method
961 var mmethoddef
: MMethodDef
963 # The mangled c name of the runtime_function
964 # Subclasses should redefine `build_c_name` instead
967 var res
= self.c_name_cache
968 if res
!= null then return res
969 res
= self.build_c_name
970 self.c_name_cache
= res
974 # Non cached version of `c_name`
975 protected fun build_c_name
: String is abstract
977 protected var c_name_cache
: nullable String writable = null
979 # Implements a call of the runtime_function
980 # May inline the body or generate a C function call
981 fun call
(v
: VISITOR, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
983 # Generate the code for the `AbstractRuntimeFunction`
984 # Warning: compile more than once compilation makes CC unhappy
985 fun compile_to_c
(compiler
: COMPILER) is abstract
988 # A runtime variable hold a runtime value in C.
989 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
991 # The tricky point is that a single C variable can be associated to more than one `RuntimeVariable` because the static knowledge of the type of an expression can vary in the C code.
992 class RuntimeVariable
993 # The name of the variable in the C code
996 # The static type of the variable (as declard in C)
999 # The current casted type of the variable (as known in Nit)
1000 var mcasttype
: MType writable
1002 # If the variable exaclty a mcasttype?
1003 # false (usual value) means that the variable is a mcasttype or a subtype.
1004 var is_exact
: Bool writable = false
1006 init(name
: String, mtype
: MType, mcasttype
: MType)
1010 self.mcasttype
= mcasttype
1011 assert not mtype
.need_anchor
1012 assert not mcasttype
.need_anchor
1015 redef fun to_s
do return name
1020 if self.is_exact
then
1021 exact_str
= " exact"
1026 if self.mtype
== self.mcasttype
then
1027 type_str
= "{mtype}{exact_str}"
1029 type_str
= "{mtype}({mcasttype}{exact_str})"
1031 return "<{name}:{type_str}>"
1035 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1038 type VISITOR: AbstractCompilerVisitor
1040 # The associated visitor
1041 var visitor
: VISITOR
1043 # The executed property.
1044 # A Method in case of a call, an attribute in case of a default initialization.
1045 var mpropdef
: MPropDef
1047 # The static type of the receiver
1048 var receiver
: MClassType
1050 # Arguments of the method (the first is the receiver)
1051 var arguments
: Array[RuntimeVariable]
1053 # The runtime_variable associated to the return (in a function)
1054 var returnvar
: nullable RuntimeVariable writable = null
1056 # The label at the end of the property
1057 var returnlabel
: nullable String writable = null
1060 # An extern C file to compile
1062 # The filename of the file
1063 var filename
: String
1064 # Additionnal specific CC compiler -c flags
1069 # Mangle a string to be a unique valid C identifier
1070 fun to_cmangle
: String
1072 var res
= new Buffer
1073 var underscore
= false
1075 if (c
>= 'a' and c
<= 'z') or (c
>='A' and c
<= 'Z') then
1081 res
.append
('_'.ascii
.to_s
)
1084 if c
>= '0' and c
<= '9' then
1087 else if c
== '_' then
1092 res
.append
(c
.ascii
.to_s
)
1100 # Escape " \ ' and non printable characters for literal C strings or characters
1101 fun escape_to_c
: String
1107 else if c
== '\0' then
1109 else if c
== '"' then
1111 else if c == '\'' then
1113 else if c == '\\
' then
1115 else if c.ascii < 32 then
1116 b.append("\\{c.ascii.to_base(8, false)}")
1126 # Return the C type associated to a given Nit static type
1127 fun ctype: String do return "val*"
1129 fun ctypename: String do return "val"
1131 # Return the name of the C structure associated to a Nit live type
1132 fun c_name: String is abstract
1133 protected var c_name_cache: nullable String protected writable
1136 redef class MClassType
1139 var res = self.c_name_cache
1140 if res != null then return res
1141 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1142 self.c_name_cache = res
1146 redef fun ctype: String
1148 if mclass.name == "Int" then
1150 else if mclass.name == "Bool" then
1152 else if mclass.name == "Char" then
1154 else if mclass.name == "Float" then
1156 else if mclass.name == "NativeString" then
1158 else if mclass.name == "NativeArray" then
1160 else if mclass.kind == extern_kind then
1167 redef fun ctypename: String
1169 if mclass.name == "Int" then
1171 else if mclass.name == "Bool" then
1173 else if mclass.name == "Char" then
1175 else if mclass.name == "Float" then
1177 else if mclass.name == "NativeString" then
1179 else if mclass.name == "NativeArray" then
1180 #return "{self.arguments.first.ctype}*"
1182 else if mclass.kind == extern_kind then
1190 redef class MGenericType
1193 var res = self.c_name_cache
1194 if res != null then return res
1196 for t in self.arguments do
1197 res = res + t.c_name
1199 self.c_name_cache = res
1204 redef class MParameterType
1207 var res = self.c_name_cache
1208 if res != null then return res
1209 res = "{self.mclass.c_name}_FT{self.rank}"
1210 self.c_name_cache = res
1215 redef class MVirtualType
1218 var res = self.c_name_cache
1219 if res != null then return res
1220 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1221 self.c_name_cache = res
1226 redef class MNullableType
1229 var res = self.c_name_cache
1230 if res != null then return res
1231 res = "nullable_{self.mtype.c_name}"
1232 self.c_name_cache = res
1238 # Return the name of the C structure associated to a Nit class
1239 fun c_name: String do
1240 var res = self.c_name_cache
1241 if res != null then return res
1242 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1243 self.c_name_cache = res
1246 private var c_name_cache: nullable String
1249 redef class MProperty
1250 fun c_name: String do
1251 var res = self.c_name_cache
1252 if res != null then return res
1253 res = "{self.intro.c_name}"
1254 self.c_name_cache = res
1257 private var c_name_cache: nullable String
1260 redef class MPropDef
1261 type VISITOR: AbstractCompilerVisitor
1263 private var c_name_cache: nullable String
1265 # The mangled name associated to the property
1268 var res = self.c_name_cache
1269 if res != null then return res
1270 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1271 self.c_name_cache = res
1276 redef class MMethodDef
1277 # Can the body be inlined?
1278 fun can_inline(v: VISITOR): Bool
1280 var modelbuilder = v.compiler.modelbuilder
1281 if modelbuilder.mpropdef2npropdef.has_key(self) then
1282 var npropdef = modelbuilder.mpropdef2npropdef[self]
1283 return npropdef.can_inline
1284 else if self.mproperty.name == "init" then
1285 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1292 # Inline the body in another visitor
1293 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1295 var modelbuilder = v.compiler.modelbuilder
1296 if modelbuilder.mpropdef2npropdef.has_key(self) then
1297 var npropdef = modelbuilder.mpropdef2npropdef[self]
1298 var oldnode = v.current_node
1299 v.current_node = npropdef
1300 self.compile_parameter_check(v, arguments)
1301 npropdef.compile_to_c(v, self, arguments)
1302 v.current_node = oldnode
1303 else if self.mproperty.name == "init" then
1304 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1305 var oldnode = v.current_node
1306 v.current_node = nclassdef
1307 self.compile_parameter_check(v, arguments)
1308 nclassdef.compile_to_c(v, self, arguments)
1309 v.current_node = oldnode
1316 # Generate type checks in the C code to check covariant parameters
1317 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1319 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1321 for i in [0..msignature.arity[ do
1322 # skip test for vararg since the array is instantiated with the correct polymorphic type
1323 if msignature.vararg_rank == i then continue
1325 # skip if the cast is not required
1326 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1327 if not origmtype.need_anchor then continue
1329 # get the parameter type
1330 var mtype = self.msignature.mparameters[i].mtype
1333 # note that v decides if and how to implements the cast
1334 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1335 var cond = v.type_test(arguments[i+1], mtype, "covariance")
1336 v.add("if (!{cond}) \{")
1337 v.add_abort("Cast failed")
1345 redef class APropdef
1346 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1348 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1349 debug("Not yet implemented")
1352 fun can_inline: Bool do return true
1355 redef class AConcreteMethPropdef
1356 redef fun compile_to_c(v, mpropdef, arguments)
1358 for i in [0..mpropdef.msignature.arity[ do
1359 var variable = self.n_signature.n_params[i].variable.as(not null)
1360 v.assign(v.variable(variable), arguments[i+1])
1362 # Call the implicit super-init
1363 var auto_super_inits = self.auto_super_inits
1364 if auto_super_inits != null then
1365 var selfarg = [arguments.first]
1366 for auto_super_init in auto_super_inits do
1367 if auto_super_init.intro.msignature.arity == 0 then
1368 v.send(auto_super_init, selfarg)
1370 v.send(auto_super_init, arguments)
1374 v.stmt(self.n_block)
1377 redef fun can_inline
1379 if self.auto_super_inits != null then return false
1380 var nblock = self.n_block
1381 if nblock == null then return true
1382 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1383 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1388 redef class AInternMethPropdef
1389 redef fun compile_to_c(v, mpropdef, arguments)
1391 var pname = mpropdef.mproperty.name
1392 var cname = mpropdef.mclassdef.mclass.name
1393 var ret = mpropdef.msignature.return_mtype
1395 ret = v.resolve_for(ret, arguments.first)
1397 if pname != "==" and pname != "!=" then
1398 v.adapt_signature(mpropdef, arguments)
1400 if cname == "Int" then
1401 if pname == "output" then
1402 v.add("printf(\"%ld\\n\", {arguments.first});")
1404 else if pname == "object_id" then
1405 v.ret(arguments.first)
1407 else if pname == "+" then
1408 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1410 else if pname == "-" then
1411 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1413 else if pname == "unary -" then
1414 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1416 else if pname == "succ" then
1417 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1419 else if pname == "prec" then
1420 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1422 else if pname == "*" then
1423 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1425 else if pname == "/" then
1426 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1428 else if pname == "%" then
1429 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1431 else if pname == "lshift" then
1432 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1434 else if pname == "rshift" then
1435 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1437 else if pname == "==" then
1438 v.ret(v.equal_test(arguments[0], arguments[1]))
1440 else if pname == "!=" then
1441 var res = v.equal_test(arguments[0], arguments[1])
1442 v.ret(v.new_expr("!{res}", ret.as(not null)))
1444 else if pname == "<" then
1445 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1447 else if pname == ">" then
1448 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1450 else if pname == "<=" then
1451 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1453 else if pname == ">=" then
1454 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1456 else if pname == "to_f" then
1457 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1459 else if pname == "ascii" then
1460 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1463 else if cname == "Char" then
1464 if pname == "output" then
1465 v.add("printf(\"%c\", {arguments.first});")
1467 else if pname == "object_id" then
1468 v.ret(arguments.first)
1470 else if pname == "+" then
1471 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1473 else if pname == "-" then
1474 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1476 else if pname == "==" then
1477 v.ret(v.equal_test(arguments[0], arguments[1]))
1479 else if pname == "!=" then
1480 var res = v.equal_test(arguments[0], arguments[1])
1481 v.ret(v.new_expr("!{res}", ret.as(not null)))
1483 else if pname == "succ" then
1484 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1486 else if pname == "prec" then
1487 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1489 else if pname == "<" then
1490 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1492 else if pname == ">" then
1493 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1495 else if pname == "<=" then
1496 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1498 else if pname == ">=" then
1499 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1501 else if pname == "to_i" then
1502 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1504 else if pname == "ascii" then
1505 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1508 else if cname == "Bool" then
1509 if pname == "output" then
1510 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1512 else if pname == "object_id" then
1513 v.ret(arguments.first)
1515 else if pname == "==" then
1516 v.ret(v.equal_test(arguments[0], arguments[1]))
1518 else if pname == "!=" then
1519 var res = v.equal_test(arguments[0], arguments[1])
1520 v.ret(v.new_expr("!{res}", ret.as(not null)))
1523 else if cname == "Float" then
1524 if pname == "output" then
1525 v.add("printf(\"%f\\n\", {arguments.first});")
1527 else if pname == "object_id" then
1528 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1530 else if pname == "+" then
1531 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1533 else if pname == "-" then
1534 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1536 else if pname == "unary -" then
1537 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1539 else if pname == "succ" then
1540 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1542 else if pname == "prec" then
1543 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1545 else if pname == "*" then
1546 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1548 else if pname == "/" then
1549 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1551 else if pname == "==" then
1552 v.ret(v.equal_test(arguments[0], arguments[1]))
1554 else if pname == "!=" then
1555 var res = v.equal_test(arguments[0], arguments[1])
1556 v.ret(v.new_expr("!{res}", ret.as(not null)))
1558 else if pname == "<" then
1559 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1561 else if pname == ">" then
1562 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1564 else if pname == "<=" then
1565 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1567 else if pname == ">=" then
1568 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1570 else if pname == "to_i" then
1571 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1574 else if cname == "Char" then
1575 if pname == "output" then
1576 v.add("printf(\"%c\", {arguments.first});")
1578 else if pname == "object_id" then
1579 v.ret(arguments.first)
1581 else if pname == "==" then
1582 v.ret(v.equal_test(arguments[0], arguments[1]))
1584 else if pname == "!=" then
1585 var res = v.equal_test(arguments[0], arguments[1])
1586 v.ret(v.new_expr("!{res}", ret.as(not null)))
1588 else if pname == "ascii" then
1589 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1592 else if cname == "NativeString" then
1593 if pname == "[]" then
1594 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1596 else if pname == "[]=" then
1597 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1599 else if pname == "copy_to" then
1600 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1602 else if pname == "atoi" then
1603 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1606 else if cname == "NativeArray" then
1607 v.native_array_def(pname, ret, arguments)
1610 if pname == "exit" then
1611 v.add("exit({arguments[1]});")
1613 else if pname == "sys" then
1614 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1616 else if pname == "calloc_string" then
1617 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1619 else if pname == "calloc_array" then
1620 v.calloc_array(ret.as(not null), arguments)
1622 else if pname == "object_id" then
1623 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1625 else if pname == "is_same_type" then
1626 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1628 else if pname == "output_class_name" then
1629 var nat = v.class_name_string(arguments.first)
1630 v.add("printf(\"%s\\n\", {nat});")
1632 else if pname == "native_class_name" then
1633 var nat = v.class_name_string(arguments.first)
1634 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1636 else if pname == "force_garbage_collection" then
1637 v.add("nit_gcollect();")
1639 else if pname == "native_argc" then
1640 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1642 else if pname == "native_argv" then
1643 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1646 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1647 debug("Not implemented {mpropdef}")
1651 redef class AExternMethPropdef
1652 redef fun compile_to_c(v, mpropdef, arguments)
1655 var nextern = self.n_extern
1656 if nextern == null then
1657 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1661 externname = nextern.text.substring(1, nextern.text.length-2)
1662 if location.file != null then
1663 var file = location.file.filename
1666 var res: nullable RuntimeVariable = null
1667 var ret = mpropdef.msignature.return_mtype
1669 ret = v.resolve_for(ret, arguments.first)
1670 res = v.new_var(ret)
1672 v.adapt_signature(mpropdef, arguments)
1675 v.add("{externname}({arguments.join(", ")});")
1677 v.add("{res} = {externname}({arguments.join(", ")});")
1683 redef class AExternInitPropdef
1684 redef fun compile_to_c(v, mpropdef, arguments)
1687 var nextern = self.n_extern
1688 if nextern == null then
1689 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1693 externname = nextern.text.substring(1, nextern.text.length-2)
1694 if location.file != null then
1695 var file = location.file.filename
1698 v.adapt_signature(mpropdef, arguments)
1699 var ret = arguments.first.mtype
1700 var res = v.new_var(ret)
1704 v.add("{res} = {externname}({arguments.join(", ")});")
1709 redef class AAttrPropdef
1710 redef fun compile_to_c(v, mpropdef, arguments)
1712 if arguments.length == 1 then
1713 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1714 v.assign(v.frame.returnvar.as(not null), res)
1716 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1720 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1722 var nexpr = self.n_expr
1723 if nexpr != null then
1724 var oldnode = v.current_node
1725 v.current_node = self
1726 var old_frame = v.frame
1727 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1729 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1730 v.write_attribute(self.mpropdef.mproperty, recv, value)
1732 v.current_node = oldnode
1736 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1738 var nexpr = self.n_expr
1739 if nexpr != null then return
1741 var oldnode = v.current_node
1742 v.current_node = self
1743 var old_frame = v.frame
1744 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1746 # Force read to check the initialization
1747 v.read_attribute(self.mpropdef.mproperty, recv)
1749 v.current_node = oldnode
1753 redef class AClassdef
1754 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1756 if mpropdef == self.mfree_init then
1757 var super_inits = self.super_inits
1758 if super_inits != null then
1759 assert arguments.length == 1
1760 for su in super_inits do
1761 v.send(su, arguments)
1765 var recv = arguments.first
1767 # Collect undefined attributes
1768 for npropdef in self.n_propdefs do
1769 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1770 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1780 redef class ADeferredMethPropdef
1781 redef fun compile_to_c(v, mpropdef, arguments) do v.add_abort("Deferred method called")
1782 redef fun can_inline do return true
1786 # Try to compile self as an expression
1787 # Do not call this method directly, use `v.expr` instead
1788 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1790 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1791 var mtype = self.mtype
1792 if mtype == null then
1795 var res = v.new_var(mtype)
1796 v.add("/* {res} = NOT YET {class_name} */")
1801 # Try to compile self as a statement
1802 # Do not call this method directly, use `v.stmt` instead
1803 private fun stmt(v: AbstractCompilerVisitor)
1806 if res != null then v.add("{res};")
1810 redef class ABlockExpr
1813 for e in self.n_expr do v.stmt(e)
1817 var last = self.n_expr.last
1818 for e in self.n_expr do
1819 if e == last then break
1822 return v.expr(last, null)
1826 redef class AVardeclExpr
1829 var variable = self.variable.as(not null)
1830 var ne = self.n_expr
1832 var i = v.expr(ne, variable.declared_type)
1833 v.assign(v.variable(variable), i)
1838 redef class AVarExpr
1841 var res = v.variable(self.variable.as(not null))
1842 var mtype = self.mtype.as(not null)
1843 return v.autoadapt(res, mtype)
1847 redef class AVarAssignExpr
1850 var variable = self.variable.as(not null)
1851 var i = v.expr(self.n_value, variable.declared_type)
1852 v.assign(v.variable(variable), i)
1856 var variable = self.variable.as(not null)
1857 var i = v.expr(self.n_value, variable.declared_type)
1858 v.assign(v.variable(variable), i)
1863 redef class AVarReassignExpr
1866 var variable = self.variable.as(not null)
1867 var vari = v.variable(variable)
1868 var value = v.expr(self.n_value, variable.declared_type)
1869 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
1871 v.assign(v.variable(variable), res)
1875 redef class ASelfExpr
1876 redef fun expr(v) do return v.frame.arguments.first
1879 redef class AContinueExpr
1880 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
1883 redef class ABreakExpr
1884 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
1887 redef class AReturnExpr
1890 var nexpr = self.n_expr
1891 if nexpr != null then
1892 var returnvar = v.frame.returnvar.as(not null)
1893 var i = v.expr(nexpr, returnvar.mtype)
1894 v.assign(returnvar, i)
1896 v.add("goto {v.frame.returnlabel.as(not null)};")
1900 redef class AAbortExpr
1901 redef fun stmt(v) do v.add_abort("Aborted")
1907 var cond = v.expr_bool(self.n_expr)
1908 v.add("if ({cond})\{")
1917 var res = v.new_var(self.mtype.as(not null))
1918 var cond = v.expr_bool(self.n_expr)
1919 v.add("if ({cond})\{")
1920 v.assign(res, v.expr(self.n_then.as(not null), null))
1922 v.assign(res, v.expr(self.n_else.as(not null), null))
1928 redef class AIfexprExpr
1931 var res = v.new_var(self.mtype.as(not null))
1932 var cond = v.expr_bool(self.n_expr)
1933 v.add("if ({cond})\{")
1934 v.assign(res, v.expr(self.n_then, null))
1936 v.assign(res, v.expr(self.n_else, null))
1945 v.stmt(self.n_block)
1946 var escapemark = self.escapemark
1947 if escapemark != null then
1948 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1953 redef class AWhileExpr
1957 var cond = v.expr_bool(self.n_expr)
1958 v.add("if (!{cond}) break;")
1959 v.stmt(self.n_block)
1960 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1962 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1966 redef class ALoopExpr
1970 v.stmt(self.n_block)
1971 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1973 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
1977 redef class AForExpr
1980 # Shortcut on explicit range
1981 # Avoid the instantiation of the range and the iterator
1982 var nexpr = self.n_expr
1983 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
1984 var from = v.expr(nexpr.n_expr, null)
1985 var to = v.expr(nexpr.n_expr2, null)
1986 var variable = v.variable(variables.first)
1988 v.assign(variable, from)
1989 v.add("for(;;) \{ /* shortcut range */")
1991 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
1993 v.add("if(!{ok}) break;")
1995 v.stmt(self.n_block)
1997 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
1998 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2000 v.assign(variable, succ)
2002 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2006 var cl = v.expr(self.n_expr, null)
2007 var it_meth = self.method_iterator
2008 assert it_meth != null
2009 var it = v.send(it_meth, [cl])
2012 var isok_meth = self.method_is_ok
2013 assert isok_meth != null
2014 var ok = v.send(isok_meth, [it])
2016 v.add("if(!{ok}) break;")
2017 if self.variables.length == 1 then
2018 var item_meth = self.method_item
2019 assert item_meth != null
2020 var i = v.send(item_meth, [it])
2022 v.assign(v.variable(variables.first), i)
2023 else if self.variables.length == 2 then
2024 var key_meth = self.method_key
2025 assert key_meth != null
2026 var i = v.send(key_meth, [it])
2028 v.assign(v.variable(variables[0]), i)
2029 var item_meth = self.method_item
2030 assert item_meth != null
2031 i = v.send(item_meth, [it])
2033 v.assign(v.variable(variables[1]), i)
2037 v.stmt(self.n_block)
2038 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2039 var next_meth = self.method_next
2040 assert next_meth != null
2041 v.send(next_meth, [it])
2043 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2047 redef class AAssertExpr
2050 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2052 var cond = v.expr_bool(self.n_expr)
2053 v.add("if (!{cond}) \{")
2057 v.add_abort("Assert '{nid.text}' failed")
2059 v.add_abort("Assert failed")
2068 var res = v.new_var(self.mtype.as(not null))
2069 var i1 = v.expr_bool(self.n_expr)
2070 v.add("if ({i1}) \{")
2073 var i2 = v.expr_bool(self.n_expr2)
2074 v.add("{res} = {i2};")
2080 redef class AAndExpr
2083 var res = v.new_var(self.mtype.as(not null))
2084 var i1 = v.expr_bool(self.n_expr)
2085 v.add("if (!{i1}) \{")
2088 var i2 = v.expr_bool(self.n_expr2)
2089 v.add("{res} = {i2};")
2095 redef class ANotExpr
2098 var cond = v.expr_bool(self.n_expr)
2099 return v.new_expr("!{cond}", self.mtype.as(not null))
2103 redef class AOrElseExpr
2106 var res = v.new_var(self.mtype.as(not null))
2107 var i1 = v.expr(self.n_expr, null)
2108 v.add("if ({i1}!=NULL) \{")
2111 var i2 = v.expr(self.n_expr2, null)
2121 var value1 = v.expr(self.n_expr, null)
2122 var value2 = v.expr(self.n_expr2, null)
2123 return v.equal_test(value1, value2)
2127 redef class AIntExpr
2128 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2131 redef class AFloatExpr
2132 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2135 redef class ACharExpr
2136 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2139 redef class AArrayExpr
2142 var mtype = self.mtype.as(MClassType).arguments.first
2143 var array = new Array[RuntimeVariable]
2144 for nexpr in self.n_exprs.n_exprs do
2145 var i = v.expr(nexpr, mtype)
2148 return v.array_instance(array, mtype)
2152 redef class AStringFormExpr
2153 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2156 redef class ASuperstringExpr
2159 var array = new Array[RuntimeVariable]
2160 for ne in self.n_exprs do
2161 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2162 var i = v.expr(ne, null)
2165 var a = v.array_instance(array, v.object_type)
2166 var res = v.send(v.get_property("to_s", a.mtype), [a])
2171 redef class ACrangeExpr
2174 var i1 = v.expr(self.n_expr, null)
2175 var i2 = v.expr(self.n_expr2, null)
2176 var mtype = self.mtype.as(MClassType)
2177 var res = v.init_instance(mtype)
2178 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2179 v.check_init_instance(res, mtype)
2184 redef class AOrangeExpr
2187 var i1 = v.expr(self.n_expr, null)
2188 var i2 = v.expr(self.n_expr2, null)
2189 var mtype = self.mtype.as(MClassType)
2190 var res = v.init_instance(mtype)
2191 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2192 v.check_init_instance(res, mtype)
2197 redef class ATrueExpr
2198 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2201 redef class AFalseExpr
2202 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2205 redef class ANullExpr
2206 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2209 redef class AIsaExpr
2212 var i = v.expr(self.n_expr, null)
2213 return v.type_test(i, self.cast_type.as(not null), "isa")
2217 redef class AAsCastExpr
2220 var i = v.expr(self.n_expr, null)
2221 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2223 var cond = v.type_test(i, self.mtype.as(not null), "as")
2224 v.add("if (!{cond}) \{")
2225 v.add_abort("Cast failed")
2231 redef class AAsNotnullExpr
2234 var i = v.expr(self.n_expr, null)
2235 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2237 v.add("if ({i} == NULL) \{")
2238 v.add_abort("Cast failed")
2244 redef class AParExpr
2245 redef fun expr(v) do return v.expr(self.n_expr, null)
2248 redef class AOnceExpr
2251 var mtype = self.mtype.as(not null)
2252 var name = v.get_name("varonce")
2253 var guard = v.get_name(name + "_guard")
2254 v.add_decl("static {mtype.ctype} {name};")
2255 v.add_decl("static int {guard};")
2256 var res = v.new_var(mtype)
2257 v.add("if ({guard}) \{")
2258 v.add("{res} = {name};")
2260 var i = v.expr(self.n_expr, mtype)
2261 v.add("{res} = {i};")
2262 v.add("{name} = {res};")
2263 v.add("{guard} = 1;")
2269 redef class ASendExpr
2272 var recv = v.expr(self.n_expr, null)
2274 for a in self.raw_arguments.as(not null) do
2275 args.add(v.expr(a, null))
2277 return v.compile_callsite(self.callsite.as(not null), args)
2281 redef class ASendReassignFormExpr
2284 var recv = v.expr(self.n_expr, null)
2286 for a in self.raw_arguments.as(not null) do
2287 args.add(v.expr(a, null))
2289 var value = v.expr(self.n_value, null)
2291 var left = v.compile_callsite(self.callsite.as(not null), args)
2294 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2298 v.compile_callsite(self.write_callsite.as(not null), args)
2302 redef class ASuperExpr
2305 var recv = v.frame.arguments.first
2307 for a in self.n_args.n_exprs do
2308 args.add(v.expr(a, null))
2310 if args.length == 1 then
2311 args = v.frame.arguments
2314 var mproperty = self.mproperty
2315 if mproperty != null then
2316 if mproperty.intro.msignature.arity == 0 then
2320 var res = v.send(mproperty, args)
2324 # stantard call-next-method
2325 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2329 redef class ANewExpr
2332 var mtype = self.mtype.as(MClassType)
2334 var ctype = mtype.ctype
2335 if ctype == "val*" then
2336 recv = v.init_instance(mtype)
2337 else if ctype == "void*" then
2338 recv = v.new_expr("NULL/*special!*/", mtype)
2340 debug("cannot new {mtype}")
2344 for a in self.n_args.n_exprs do
2345 args.add(v.expr(a, null))
2347 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2348 if res2 != null then
2349 #self.debug("got {res2} from {mproperty}. drop {recv}")
2352 v.check_init_instance(recv, mtype)
2357 redef class AAttrExpr
2360 var recv = v.expr(self.n_expr, null)
2361 var mproperty = self.mproperty.as(not null)
2362 return v.read_attribute(mproperty, recv)
2366 redef class AAttrAssignExpr
2369 var recv = v.expr(self.n_expr, null)
2370 var i = v.expr(self.n_value, null)
2371 var mproperty = self.mproperty.as(not null)
2372 v.write_attribute(mproperty, recv, i)
2376 redef class AAttrReassignExpr
2379 var recv = v.expr(self.n_expr, null)
2380 var value = v.expr(self.n_value, null)
2381 var mproperty = self.mproperty.as(not null)
2382 var attr = v.read_attribute(mproperty, recv)
2383 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2385 v.write_attribute(mproperty, recv, res)
2389 redef class AIssetAttrExpr
2392 var recv = v.expr(self.n_expr, null)
2393 var mproperty = self.mproperty.as(not null)
2394 return v.isset_attribute(mproperty, recv)
2398 redef class ADebugTypeExpr
2407 redef class Array[E]
2408 # Return a new `Array` with the elements only contened in self and not in `o`
2409 fun -(o: Array[E]): Array[E] do
2410 var res = new Array[E]
2411 for e in self do if not o.has(e) then res.add(e)
2417 # All `MProperty` associated to all `MClassDef` of `mclass`
2418 fun properties(mclass: MClass): Set[MProperty] do
2419 if not self.properties_cache.has_key(mclass) then
2420 var properties = new HashSet[MProperty]
2421 var parents = new Array[MClass]
2422 if self.flatten_mclass_hierarchy.has(mclass) then
2423 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2425 for parent in parents do
2426 properties.add_all(self.properties(parent))
2428 for mclassdef in mclass.mclassdefs do
2429 for mprop in mclassdef.intro_mproperties do
2430 properties.add(mprop)
2433 self.properties_cache[mclass] = properties
2435 return properties_cache[mclass]
2437 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]