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
24 private import annotation
26 # Add compiling options
27 redef class ToolContext
29 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
31 var opt_dir
: OptionString = new OptionString("Output directory", "--dir")
33 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
35 var opt_no_main
: OptionBool = new OptionBool("Do not generate main entry point", "--no-main")
37 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
39 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
41 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
43 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
45 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
46 # --no-check-covariance
47 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
48 # --no-check-attr-isset
49 var opt_no_check_attr_isset
: OptionBool = new OptionBool("Disable isset tests before each attribute access (dangerous)", "--no-check-attr-isset")
51 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
53 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
55 var opt_no_check_null
: OptionBool = new OptionBool("Disable tests of null receiver (dangerous)", "--no-check-null")
57 var opt_no_check_all
: OptionBool = new OptionBool("Disable all tests (dangerous)", "--no-check-all")
58 # --typing-test-metrics
59 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
60 # --invocation-metrics
61 var opt_invocation_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
62 # --isset-checks-metrics
63 var opt_isset_checks_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of isset checks before attributes access", "--isset-checks-metrics")
65 var opt_stacktrace
: OptionString = new OptionString("Control the generation of stack traces", "--stacktrace")
67 var opt_no_gcc_directive
= new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
69 var opt_release
= new OptionBool("Compile in release mode and finalize application", "--release")
74 self.option_context
.add_option
(self.opt_output
, self.opt_dir
, self.opt_no_cc
, self.opt_no_main
, self.opt_make_flags
, self.opt_compile_dir
, self.opt_hardening
, self.opt_no_shortcut_range
)
75 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_attr_isset
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_null
, self.opt_no_check_all
)
76 self.option_context
.add_option
(self.opt_typing_test_metrics
, self.opt_invocation_metrics
, self.opt_isset_checks_metrics
)
77 self.option_context
.add_option
(self.opt_stacktrace
)
78 self.option_context
.add_option
(self.opt_no_gcc_directive
)
79 self.option_context
.add_option
(self.opt_release
)
82 redef fun process_options
(args
)
86 var st
= opt_stacktrace
.value
87 if st
== "none" or st
== "libunwind" or st
== "nitstack" then
89 else if st
== "auto" or st
== null then
91 opt_stacktrace
.value
= "nitstack"
93 print
"Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `nitstack` or `auto`."
97 if opt_output
.value
!= null and opt_dir
.value
!= null then
98 print
"Error: cannot use both --dir and --output"
102 if opt_no_check_all
.value
then
103 opt_no_check_covariance
.value
= true
104 opt_no_check_attr_isset
.value
= true
105 opt_no_check_assert
.value
= true
106 opt_no_check_autocast
.value
= true
107 opt_no_check_null
.value
= true
112 redef class ModelBuilder
113 # The compilation directory
114 var compile_dir
: String
116 # Simple indirection to `Toolchain::write_and_make`
117 protected fun write_and_make
(compiler
: AbstractCompiler)
119 var platform
= compiler
.mainmodule
.target_platform
121 if platform
== null then
122 toolchain
= new MakefileToolchain(toolcontext
)
124 toolchain
= platform
.toolchain
(toolcontext
)
126 compile_dir
= toolchain
.compile_dir
127 toolchain
.write_and_make compiler
132 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
136 var toolcontext
: ToolContext
138 fun compile_dir
: String
140 var compile_dir
= toolcontext
.opt_compile_dir
.value
141 if compile_dir
== null then compile_dir
= ".nit_compile"
145 fun write_and_make
(compiler
: AbstractCompiler) is abstract
148 class MakefileToolchain
150 # The list of directories to search for included C headers (-I for C compilers)
151 # The list is initially set with :
152 # * the toolcontext --cc-path option
153 # * the NIT_CC_PATH environment variable
154 # * `toolcontext.nit_dir`
155 # Path can be added (or removed) by the client
156 var cc_paths
= new Array[String]
158 protected fun gather_cc_paths
160 # Look for the the Nit clib path
161 var path_env
= toolcontext
.nit_dir
162 if path_env
!= null then
163 var libname
= "{path_env}/clib"
164 if libname
.file_exists
then cc_paths
.add
(libname
)
167 if cc_paths
.is_empty
then
168 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
171 # Add user defined cc_paths
172 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
174 path_env
= "NIT_CC_PATH".environ
175 if not path_env
.is_empty
then
176 cc_paths
.append
(path_env
.split_with
(':'))
180 redef fun write_and_make
(compiler
)
184 var mainmodule
= compiler
.mainmodule
185 var compile_dir
= compile_dir
187 # Generate the .h and .c files
188 # A single C file regroups many compiled rumtime functions
189 # 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
191 self.toolcontext
.info
("*** WRITING C ***", 1)
195 var cfiles
= new Array[String]
196 write_files
(compiler
, compile_dir
, cfiles
)
198 # Generate the Makefile
200 write_makefile
(compiler
, compile_dir
, cfiles
)
203 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
205 # Execute the Makefile
207 if self.toolcontext
.opt_no_cc
.value
then return
210 self.toolcontext
.info
("*** COMPILING C ***", 1)
212 compile_c_code
(compiler
, compile_dir
)
215 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
218 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
220 var platform
= compiler
.mainmodule
.target_platform
221 if self.toolcontext
.opt_stacktrace
.value
== "nitstack" and (platform
== null or platform
.supports_libunwind
) then compiler
.build_c_to_nit_bindings
222 var cc_opt_with_libgc
= "-DWITH_LIBGC"
223 if platform
!= null and not platform
.supports_libgc
then cc_opt_with_libgc
= ""
225 # Add gc_choser.h to aditionnal bodies
226 var gc_chooser
= new ExternCFile("gc_chooser.c", cc_opt_with_libgc
)
227 compiler
.extern_bodies
.add
(gc_chooser
)
228 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
229 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
232 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
233 for m
in compiler
.mainmodule
.in_importation
.greaters
do
234 compiler
.finalize_ffi_for_module
(m
)
237 # Copy original .[ch] files to compile_dir
238 for src
in compiler
.files_to_copy
do
239 var basename
= src
.basename
("")
240 var dst
= "{compile_dir}/{basename}"
244 var hfilename
= compiler
.header
.file
.name
+ ".h"
245 var hfilepath
= "{compile_dir}/{hfilename}"
246 var h
= new OFStream.open
(hfilepath
)
247 for l
in compiler
.header
.decl_lines
do
251 for l
in compiler
.header
.lines
do
257 for f
in compiler
.files
do
259 var hfile
: nullable OFStream = null
261 var cfilename
= "{f.name}.0.h"
262 var cfilepath
= "{compile_dir}/{cfilename}"
263 hfile
= new OFStream.open
(cfilepath
)
264 hfile
.write
"#include \"{hfilename}\
"\n"
265 for key
in f
.required_declarations
do
266 if not compiler
.provided_declarations
.has_key
(key
) then
267 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
269 node
.debug
"No provided declaration for {key}"
271 print
"No provided declaration for {key}"
275 hfile
.write compiler
.provided_declarations
[key
]
279 var file
: nullable OFStream = null
280 for vis
in f
.writers
do
281 if vis
== compiler
.header
then continue
282 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
283 if total_lines
== 0 then continue
285 if file
== null or count
> 10000 then
287 if file
!= null then file
.close
288 cfilename
= "{f.name}.{i}.c"
289 cfilepath
= "{compile_dir}/{cfilename}"
290 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
291 cfiles
.add
(cfilename
)
292 file
= new OFStream.open
(cfilepath
)
293 file
.write
"#include \"{f.name}.0.h\
"\n"
296 for l
in vis
.decl_lines
do
300 for l
in vis
.lines
do
305 if file
!= null then file
.close
308 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
311 fun makefile_name
(mainmodule
: MModule): String do return "{mainmodule.name}.mk"
313 fun default_outname
(mainmodule
: MModule): String do return mainmodule
.name
315 # Combine options and platform informations to get the final path of the outfile
316 fun outfile
(mainmodule
: MModule): String
318 var res
= self.toolcontext
.opt_output
.value
319 if res
!= null then return res
320 res
= default_outname
(mainmodule
)
321 var dir
= self.toolcontext
.opt_dir
.value
322 if dir
!= null then return dir
.join_path
(res
)
326 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
328 var mainmodule
= compiler
.mainmodule
329 var platform
= compiler
.mainmodule
.target_platform
331 var outname
= outfile
(mainmodule
)
333 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
334 var outpath
= orig_dir
.join_path
(outname
).simplify_path
335 var makename
= makefile_name
(mainmodule
)
336 var makepath
= "{compile_dir}/{makename}"
337 var makefile
= new OFStream.open
(makepath
)
341 cc_includes
+= " -I \"" + p + "\
""
344 var linker_options
= new HashSet[String]
345 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
346 for m
in mainmodule
.in_importation
.greaters
do
347 var libs
= m
.collect_linker_libs
348 if libs
!= null then linker_options
.add_all
(libs
)
351 makefile
.write
("CC = ccache cc\nCXX = ccache c++\nCFLAGS = -g -O2 -Wno-unused-value -Wno-switch\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
353 var ost
= toolcontext
.opt_stacktrace
.value
354 if (ost
== "libunwind" or ost
== "nitstack") and (platform
== null or platform
.supports_libunwind
) then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
356 # Dynamic adaptations
357 # While `platform` enable complex toolchains, they are statically applied
358 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
360 # Check and adapt the targeted system
361 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
362 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
363 # remove -lunwind since it is already included on macosx
364 makefile
.write
("\tNEED_LIBUNWIND :=\n")
365 makefile
.write
("endif\n\n")
367 # Check and adapt for the compiler used
368 # clang need an additionnal `-Qunused-arguments`
369 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
371 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
373 makefile
.write
("all: {outpath}\n\n")
375 var ofiles
= new Array[String]
376 var dep_rules
= new Array[String]
377 # Compile each generated file
379 var o
= f
.strip_extension
(".c") + ".o"
380 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
385 var java_files
= new Array[ExternFile]
387 # Compile each required extern body into a specific .o
388 for f
in compiler
.extern_bodies
do
389 var o
= f
.makefile_rule_name
390 var ff
= f
.filename
.basename
("")
391 makefile
.write
("{o}: {ff}\n")
392 makefile
.write
("\t{f.makefile_rule_content}\n\n")
393 dep_rules
.add
(f
.makefile_rule_name
)
395 if f
.compiles_to_o_file
then ofiles
.add
(o
)
396 if f
.add_to_jar
then java_files
.add
(f
)
399 if not java_files
.is_empty
then
400 var jar_file
= "{outpath}.jar"
402 var class_files_array
= new Array[String]
403 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
404 var class_files
= class_files_array
.join
(" ")
406 makefile
.write
("{jar_file}: {class_files}\n")
407 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
408 dep_rules
.add jar_file
412 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
414 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
416 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
419 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
421 var makename
= makefile_name
(compiler
.mainmodule
)
423 var makeflags
= self.toolcontext
.opt_make_flags
.value
424 if makeflags
== null then makeflags
= ""
425 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
428 if self.toolcontext
.verbose_level
>= 3 then
429 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
431 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
434 toolcontext
.error
(null, "make failed! Error code: {res}.")
439 # Singleton that store the knowledge about the compilation process
440 abstract class AbstractCompiler
441 type VISITOR: AbstractCompilerVisitor
443 # Table corresponding c_names to nit names (methods)
444 var names
= new HashMap[String, String]
446 # The main module of the program currently compiled
447 # Is assigned during the separate compilation
448 var mainmodule
: MModule is writable
450 # The real main module of the program
451 var realmainmodule
: MModule
453 # The modeulbuilder used to know the model and the AST
454 var modelbuilder
: ModelBuilder is protected writable
456 # Is hardening asked? (see --hardening)
457 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
459 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
461 self.mainmodule
= mainmodule
462 self.realmainmodule
= mainmodule
463 self.modelbuilder
= modelbuilder
466 # Force the creation of a new file
467 # The point is to avoid contamination between must-be-compiled-separately files
468 fun new_file
(name
: String): CodeFile
470 var f
= new CodeFile(name
)
475 # The list of all associated files
476 # Used to generate .c files
477 var files
: List[CodeFile] = new List[CodeFile]
479 # Initialize a visitor specific for a compiler engine
480 fun new_visitor
: VISITOR is abstract
482 # Where global declaration are stored (the main .h)
483 var header
: CodeWriter is writable
485 # Provide a declaration that can be requested (before or latter) by a visitor
486 fun provide_declaration
(key
: String, s
: String)
488 if self.provided_declarations
.has_key
(key
) then
489 assert self.provided_declarations
[key
] == s
491 self.provided_declarations
[key
] = s
494 private var provided_declarations
= new HashMap[String, String]
496 private var requirers_of_declarations
= new HashMap[String, ANode]
498 # Builds the .c and .h files to be used when generating a Stack Trace
499 # Binds the generated C function names to Nit function names
500 fun build_c_to_nit_bindings
502 var compile_dir
= modelbuilder
.compile_dir
504 var stream
= new OFStream.open
("{compile_dir}/c_functions_hash.c")
505 stream
.write
("#include <string.h>\n")
506 stream
.write
("#include <stdlib.h>\n")
507 stream
.write
("#include \"c_functions_hash
.h\
"\n")
508 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
509 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
510 stream
.write
("char* procname = malloc(len+1);")
511 stream
.write
("memcpy(procname, procproc, len);")
512 stream
.write
("procname[len] = '\\0';")
513 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
514 for i
in names
.keys
do
517 stream.write("\
",\"")
518 stream.write(names[i])
519 stream.write("\
"\},\n")
521 stream
.write
("\};\n")
522 stream
.write
("int i;")
523 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
524 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
525 stream
.write
("free(procname);")
526 stream
.write
("return map[i].nit_name;")
529 stream
.write
("free(procname);")
530 stream
.write
("return NULL;")
534 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
535 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
538 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
542 # This method call compile_header_strucs method that has to be refined
543 fun compile_header
do
545 var toolctx
= modelbuilder
.toolcontext
546 self.header
.add_decl
("#include <stdlib.h>")
547 self.header
.add_decl
("#include <stdio.h>")
548 self.header
.add_decl
("#include <string.h>")
549 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
550 self.header
.add_decl
("#ifdef ANDROID")
551 self.header
.add_decl
(" #include <android/log.h>")
552 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
553 self.header
.add_decl
("#else")
554 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
555 self.header
.add_decl
("#endif")
557 compile_header_structs
558 compile_nitni_structs
560 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
561 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
562 # Signal handler function prototype
563 self.header
.add_decl
("void show_backtrace(int);")
565 self.header
.add_decl
("void show_backtrace(int) __attribute__ ((noreturn));")
568 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
569 self.header
.add_decl
("#define likely(x) (x)")
570 self.header
.add_decl
("#define unlikely(x) (x)")
571 else if gccd_disable
.has
("correct-likely") then
572 # invert the `likely` definition
573 # Used by masochists to bench the worst case
574 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
575 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
577 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
578 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
581 # Global variable used by intern methods
582 self.header
.add_decl
("extern int glob_argc;")
583 self.header
.add_decl
("extern char **glob_argv;")
584 self.header
.add_decl
("extern val *glob_sys;")
587 # Declaration of structures for live Nit types
588 protected fun compile_header_structs
is abstract
590 # Declaration of structures for nitni undelying the FFI
591 protected fun compile_nitni_structs
593 self.header
.add_decl
"""
594 /* Native reference to Nit objects */
595 /* This structure is used to represent every Nit type in extern methods and custom C code. */
597 struct nitni_ref *next,
598 *prev; /* adjacent global references in global list */
599 int count; /* number of time this global reference has been marked */
602 /* List of global references from C code to Nit objects */
603 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
604 struct nitni_global_ref_list_t {
605 struct nitni_ref *head, *tail;
607 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
609 /* Initializer of global reference list */
610 extern void nitni_global_ref_list_init();
612 /* Intern function to add a global reference to the list */
613 extern void nitni_global_ref_add( struct nitni_ref *ref );
615 /* Intern function to remove a global reference from the list */
616 extern void nitni_global_ref_remove( struct nitni_ref *ref );
618 /* Increase count on an existing global reference */
619 extern void nitni_global_ref_incr( struct nitni_ref *ref );
621 /* Decrease count on an existing global reference */
622 extern void nitni_global_ref_decr( struct nitni_ref *ref );
626 fun compile_finalizer_function
628 var finalizable_type
= mainmodule
.finalizable_type
629 if finalizable_type
== null then return
631 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
633 if finalize_meth
== null then
634 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
638 var v
= self.new_visitor
639 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
640 var recv
= v
.new_expr
("obj", finalizable_type
)
641 v
.send
(finalize_meth
, [recv
])
645 # Generate the main C function.
649 # * allocate the Sys object if it exists
650 # * call init if is exists
651 # * call main if it exists
652 fun compile_main_function
654 var v
= self.new_visitor
655 v
.add_decl
("#include <signal.h>")
656 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
657 var platform
= mainmodule
.target_platform
659 if platform
!= null and not platform
.supports_libunwind
then ost
= "none"
661 var no_main
= (platform
!= null and platform
.no_main
) or modelbuilder
.toolcontext
.opt_no_main
.value
663 if ost
== "nitstack" or ost
== "libunwind" then
664 v
.add_decl
("#define UNW_LOCAL_ONLY")
665 v
.add_decl
("#include <libunwind.h>")
666 if ost
== "nitstack" then
667 v
.add_decl
("#include \"c_functions_hash
.h\
"")
670 v
.add_decl
("int glob_argc;")
671 v
.add_decl
("char **glob_argv;")
672 v
.add_decl
("val *glob_sys;")
674 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
675 for tag
in count_type_test_tags
do
676 v
.add_decl
("long count_type_test_resolved_{tag};")
677 v
.add_decl
("long count_type_test_unresolved_{tag};")
678 v
.add_decl
("long count_type_test_skipped_{tag};")
679 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
680 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
681 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
685 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
686 v
.add_decl
("long count_invoke_by_tables;")
687 v
.add_decl
("long count_invoke_by_direct;")
688 v
.add_decl
("long count_invoke_by_inline;")
689 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
690 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
691 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
694 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
695 v
.add_decl
("long count_attr_reads = 0;")
696 v
.add_decl
("long count_isset_checks = 0;")
697 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
698 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
701 v
.add_decl
("void sig_handler(int signo)\{")
702 v
.add_decl
("PRINT_ERROR(\"Caught signal
: %s\\n\
", strsignal(signo));")
703 v
.add_decl
("show_backtrace(signo);")
706 v
.add_decl
("void show_backtrace (int signo) \{")
707 if ost
== "nitstack" or ost
== "libunwind" then
708 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
709 v
.add_decl
("unw_cursor_t cursor;")
710 v
.add_decl
("if(opt==NULL)\{")
711 v
.add_decl
("unw_context_t uc;")
712 v
.add_decl
("unw_word_t ip;")
713 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
714 v
.add_decl
("unw_getcontext(&uc);")
715 v
.add_decl
("unw_init_local(&cursor, &uc);")
716 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
717 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
718 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
719 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
720 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
721 if ost
== "nitstack" then
722 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
723 v
.add_decl
(" if (recv != NULL)\{")
724 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
725 v.add_decl(" \}else\{")
726 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
729 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
732 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
733 v.add_decl("free(procname);")
736 v.add_decl("exit(signo);")
740 v.add_decl("int nit_main(int argc, char** argv) \{")
742 v.add_decl("int main(int argc, char** argv) \{")
745 v.add("signal(SIGABRT, sig_handler);")
746 v.add("signal(SIGFPE, sig_handler);")
747 v.add("signal(SIGILL, sig_handler);")
748 v.add("signal(SIGINT, sig_handler);")
749 v.add("signal(SIGTERM, sig_handler);")
750 v.add("signal(SIGSEGV, sig_handler);")
751 v.add("signal(SIGPIPE, sig_handler);")
753 v.add("glob_argc = argc; glob_argv = argv;")
754 v.add("initialize_gc_option();")
756 v.add "initialize_nitni_global_refs();"
758 var main_type = mainmodule.sys_type
759 if main_type != null then
760 var mainmodule = v.compiler.mainmodule
761 var glob_sys = v.init_instance(main_type)
762 v.add("glob_sys = {glob_sys};")
763 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
764 if main_init != null then
765 v.send(main_init, [glob_sys])
767 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
768 mainmodule.try_get_primitive_method("main", main_type.mclass)
769 if main_method != null then
770 v.send(main_method, [glob_sys])
774 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
775 v.add_decl("long count_type_test_resolved_total = 0;")
776 v.add_decl("long count_type_test_unresolved_total = 0;")
777 v.add_decl("long count_type_test_skipped_total = 0;")
778 v.add_decl("long count_type_test_total_total = 0;")
779 for tag in count_type_test_tags do
780 v.add_decl("long count_type_test_total_{tag};")
781 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
782 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
783 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
784 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
785 v.add("count_type_test_total_total += count_type_test_total_{tag};")
787 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
788 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
789 var tags = count_type_test_tags.to_a
792 v.add("printf(\"{tag}\");")
793 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
794 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
795 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
796 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
800 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
801 v.add_decl("long count_invoke_total;")
802 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
803 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
804 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
805 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
806 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
809 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
810 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
811 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
818 # Copile all C functions related to the [incr|decr]_ref features of the FFI
819 fun compile_nitni_global_ref_functions
821 var v = self.new_visitor
823 struct nitni_global_ref_list_t *nitni_global_ref_list;
824 void initialize_nitni_global_refs() {
825 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
826 nitni_global_ref_list->head = NULL;
827 nitni_global_ref_list->tail = NULL;
830 void nitni_global_ref_add( struct nitni_ref *ref ) {
831 if ( nitni_global_ref_list->head == NULL ) {
832 nitni_global_ref_list->head = ref;
835 nitni_global_ref_list->tail->next = ref;
836 ref->prev = nitni_global_ref_list->tail;
838 nitni_global_ref_list->tail = ref;
843 void nitni_global_ref_remove( struct nitni_ref *ref ) {
844 if ( ref->prev == NULL ) {
845 nitni_global_ref_list->head = ref->next;
847 ref->prev->next = ref->next;
850 if ( ref->next == NULL ) {
851 nitni_global_ref_list->tail = ref->prev;
853 ref->next->prev = ref->prev;
857 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
858 if ( ref->count == 0 ) /* not registered */
861 nitni_global_ref_add( ref );
867 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
868 if ( ref->count == 1 ) /* was last reference */
870 /* remove from list */
871 nitni_global_ref_remove( ref );
879 # List of additional files required to compile (FFI)
880 var extern_bodies = new Array[ExternFile]
882 # List of source files to copy over to the compile dir
883 var files_to_copy = new Array[String]
885 # This is used to avoid adding an extern file more than once
886 private var seen_extern = new ArraySet[String]
888 # Generate code that initialize the attributes on a new instance
889 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
891 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
892 self.mainmodule.linearize_mclassdefs(cds)
894 var n = self.modelbuilder.mclassdef2nclassdef[cd]
895 for npropdef in n.n_propdefs do
896 if npropdef isa AAttrPropdef then
897 npropdef.init_expr(v, recv)
903 # Generate code that check if an attribute is correctly initialized
904 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
906 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
907 self.mainmodule.linearize_mclassdefs(cds)
909 var n = self.modelbuilder.mclassdef2nclassdef[cd]
910 for npropdef in n.n_propdefs do
911 if npropdef isa AAttrPropdef then
912 npropdef.check_expr(v, recv)
920 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
921 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
922 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
923 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
925 protected fun init_count_type_test_tags: HashMap[String, Int]
927 var res = new HashMap[String, Int]
928 for tag in count_type_test_tags do
934 # Display stats about compilation process
938 # * type tests against resolved types (`x
isa Collection[Animal]`)
939 # * type tests against unresolved types (`x
isa Collection[E
]`)
940 # * type tests skipped
944 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
945 print "# static count_type_test"
946 print "\tresolved:\tunresolved\tskipped\ttotal"
947 var count_type_test_total = init_count_type_test_tags
948 count_type_test_resolved["total"] = 0
949 count_type_test_unresolved["total"] = 0
950 count_type_test_skipped["total"] = 0
951 count_type_test_total["total"] = 0
952 for tag in count_type_test_tags do
953 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
954 count_type_test_resolved["total"] += count_type_test_resolved[tag]
955 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
956 count_type_test_skipped["total"] += count_type_test_skipped[tag]
957 count_type_test_total["total"] += count_type_test_total[tag]
959 var count_type_test = count_type_test_total["total"]
960 var tags = count_type_test_tags.to_a
964 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
965 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
966 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
967 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
973 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
976 # Avoid division by zero by returning the string "n/a"
977 fun div(a,b:Int):String
979 if b == 0 then return "n/a"
980 return ((a*10000/b).to_f / 100.0).to_precision(2)
984 # A file unit (may be more than one file if
985 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
988 var writers = new Array[CodeWriter]
989 var required_declarations = new HashSet[String]
992 # Where to store generated lines
995 var lines: List[String] = new List[String]
996 var decl_lines: List[String] = new List[String]
998 # Add a line in the main part of the generated C
999 fun add(s: String) do self.lines.add(s)
1002 # (used for local or global declaration)
1003 fun add_decl(s: String) do self.decl_lines.add(s)
1005 init(file: CodeFile)
1008 file.writers.add(self)
1012 # A visitor on the AST of property definition that generate the C code.
1013 abstract class AbstractCompilerVisitor
1015 type COMPILER: AbstractCompiler
1017 # The associated compiler
1018 var compiler: COMPILER
1020 # The current visited AST node
1021 var current_node: nullable ANode = null is writable
1023 # The current `Frame`
1024 var frame: nullable Frame is writable
1026 # Alias for self.compiler.mainmodule.object_type
1027 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1029 # Alias for self.compiler.mainmodule.bool_type
1030 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1032 var writer: CodeWriter
1034 init(compiler: COMPILER)
1036 self.compiler = compiler
1037 self.writer = new CodeWriter(compiler.files.last)
1040 # Force to get the primitive class named `name
` or abort
1041 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
1043 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1044 fun get_property(name: String, recv: MType): MMethod
1046 assert recv isa MClassType
1047 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
1050 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1052 var initializers = callsite.mpropdef.initializers
1053 if not initializers.is_empty then
1054 var recv = arguments.first
1056 assert initializers.length == arguments.length - 1 else debug("expected {initializers.length}, got {arguments.length - 1}")
1058 for p in initializers do
1059 if p isa MMethod then
1060 self.send(p, [recv, arguments[i]])
1061 else if p isa MAttribute then
1062 self.write_attribute(p, recv, arguments[i])
1067 return self.send(callsite.mproperty, [recv])
1070 return self.send(callsite.mproperty, arguments)
1073 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1075 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1077 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1079 # Transform varargs, in raw arguments, into a single argument of type `Array`
1080 # Note: this method modify the given `args
`
1081 # If there is no vararg, then `args
` is not modified.
1082 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
1084 var recv = args.first
1085 var vararg_rank = msignature.vararg_rank
1086 if vararg_rank >= 0 then
1087 assert args.length >= msignature.arity + 1 # because of self
1089 args = new Array[RuntimeVariable]
1091 args.add(rawargs.first) # recv
1093 for i in [0..vararg_rank[ do
1094 args.add(rawargs[i+1])
1097 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
1098 var vararg = new Array[RuntimeVariable]
1099 for i in [vararg_rank..vararg_lastrank] do
1100 vararg.add(rawargs[i+1])
1103 var elttype = msignature.mparameters[vararg_rank].mtype
1104 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
1106 for i in [vararg_lastrank+1..rawargs.length-1[ do
1107 args.add(rawargs[i+1])
1110 rawargs.add_all(args)
1116 # Anchor a type to the main module and the current receiver
1117 fun anchor(mtype: MType): MType
1119 if not mtype.need_anchor then return mtype
1120 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1123 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1125 if not mtype.need_anchor then return mtype
1126 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1129 # Unsafely cast a value to a new type
1130 # ie the result share the same C variable but my have a different mcasttype
1131 # NOTE: if the adaptation is useless then `value
` is returned as it.
1132 # ENSURE: `result
.name
== value
.name
`
1133 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1135 mtype = self.anchor(mtype)
1136 var valmtype = value.mcasttype
1137 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1141 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1142 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1145 var res = new RuntimeVariable(value.name, valmtype, mtype)
1150 # Generate a super call from a method definition
1151 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1153 # Adapt the arguments of a method according to targetted `MMethodDef`
1154 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1156 # Unbox all the arguments of a method when implemented `extern` or `intern`
1157 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1159 # Box or unbox a value to another type iff a C type conversion is needed
1160 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1161 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1163 # Box extern classes to be used in the generated code
1164 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1166 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1167 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1169 # Generate a polymorphic subtype test
1170 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1172 # Generate the code required to dynamically check if 2 objects share the same runtime type
1173 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1175 # Generate a Nit "is" for two runtime_variables
1176 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1180 # Generate a static call on a method definition
1181 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1183 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1184 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1186 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1187 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1189 assert t isa MClassType
1190 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1191 return self.call(propdef, t, args)
1194 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1195 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1197 assert t isa MClassType
1198 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1199 return self.call(m, t, args)
1202 # Attributes handling
1204 # Generate a polymorphic attribute is_set test
1205 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1207 # Generate a polymorphic attribute read
1208 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1210 # Generate a polymorphic attribute write
1211 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1215 # Add a check and an abort for a null reciever if needed
1216 fun check_recv_notnull(recv: RuntimeVariable)
1218 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1220 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1222 self.add("if (unlikely({recv} == NULL)) \{")
1223 self.add_abort("Receiver is null")
1230 private var names: HashSet[String] = new HashSet[String]
1231 private var last: Int = 0
1233 # Return a new name based on `s
` and unique in the visitor
1234 fun get_name(s: String): String
1236 if not self.names.has(s) then
1240 var i = self.last + 1
1243 if not self.names.has(s2) then
1252 # Return an unique and stable identifier associated with an escapemark
1253 fun escapemark_name(e: nullable EscapeMark): String
1256 if escapemark_names.has_key(e) then return escapemark_names[e]
1258 if name == null then name = "label"
1259 name = get_name(name)
1260 escapemark_names[e] = name
1264 private var escapemark_names = new HashMap[EscapeMark, String]
1266 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1267 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1268 fun class_name_string(value: RuntimeVariable): String is abstract
1270 # Variables handling
1272 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
1274 # Return the local runtime_variable associated to a Nit local variable
1275 fun variable(variable: Variable): RuntimeVariable
1277 if self.variables.has_key(variable) then
1278 return self.variables[variable]
1280 var name = self.get_name("var_{variable.name}")
1281 var mtype = variable.declared_type.as(not null)
1282 mtype = self.anchor(mtype)
1283 var res = new RuntimeVariable(name, mtype, mtype)
1284 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1285 self.variables[variable] = res
1290 # Return a new uninitialized local runtime_variable
1291 fun new_var(mtype: MType): RuntimeVariable
1293 mtype = self.anchor(mtype)
1294 var name = self.get_name("var")
1295 var res = new RuntimeVariable(name, mtype, mtype)
1296 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1300 # The difference with `new_var
` is the C static type of the local variable
1301 fun new_var_extern(mtype: MType): RuntimeVariable
1303 mtype = self.anchor(mtype)
1304 var name = self.get_name("var")
1305 var res = new RuntimeVariable(name, mtype, mtype)
1306 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1310 # Return a new uninitialized named runtime_variable
1311 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1313 mtype = self.anchor(mtype)
1314 var res = new RuntimeVariable(name, mtype, mtype)
1315 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1319 # Correctly assign a left and a right value
1320 # Boxing and unboxing is performed if required
1321 fun assign(left, right: RuntimeVariable)
1323 right = self.autobox(right, left.mtype)
1324 self.add("{left} = {right};")
1327 # Generate instances
1329 # Generate a alloc-instance + init-attributes
1330 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1332 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1333 fun set_finalizer(recv: RuntimeVariable)
1335 var mtype = recv.mtype
1336 var finalizable_type = compiler.mainmodule.finalizable_type
1337 if finalizable_type != null and not mtype.need_anchor and
1338 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1339 add "gc_register_finalizer({recv});"
1343 # Generate an integer value
1344 fun int_instance(value: Int): RuntimeVariable
1346 var res = self.new_var(self.get_class("Int").mclass_type)
1347 self.add("{res} = {value};")
1351 # Generate a string value
1352 fun string_instance(string: String): RuntimeVariable
1354 var mtype = self.get_class("String").mclass_type
1355 var name = self.get_name("varonce")
1356 self.add_decl("static {mtype.ctype} {name};")
1357 var res = self.new_var(mtype)
1358 self.add("if ({name}) \{")
1359 self.add("{res} = {name};")
1360 self.add("\} else \{")
1361 var native_mtype = self.get_class("NativeString").mclass_type
1362 var nat = self.new_var(native_mtype)
1363 self.add("{nat} = \"{string.escape_to_c}\";")
1364 var length = self.int_instance(string.length)
1365 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1366 self.add("{name} = {res};")
1371 # Generate an array value
1372 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1374 # Get an instance of a array for a vararg
1375 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1379 # Add a line in the main part of the generated C
1380 fun add(s: String) do self.writer.lines.add(s)
1383 # (used for local or global declaration)
1384 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1386 # Request the presence of a global declaration
1387 fun require_declaration(key: String)
1389 var reqs = self.writer.file.required_declarations
1390 if reqs.has(key) then return
1392 var node = current_node
1393 if node != null then compiler.requirers_of_declarations[key] = node
1396 # Add a declaration in the local-header
1397 # The declaration is ensured to be present once
1398 fun declare_once(s: String)
1400 self.compiler.provide_declaration(s, s)
1401 self.require_declaration(s)
1404 # look for a needed .h and .c file for a given .nit source-file
1405 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1406 fun add_extern(file: String)
1408 file = file.strip_extension(".nit")
1409 var tryfile = file + ".nit.h"
1410 if tryfile.file_exists then
1411 self.declare_once("#include \"{tryfile.basename("")}\"")
1412 self.compiler.files_to_copy.add(tryfile)
1414 tryfile = file + "_nit.h"
1415 if tryfile.file_exists then
1416 self.declare_once("#include \"{tryfile.basename("")}\"")
1417 self.compiler.files_to_copy.add(tryfile)
1420 if self.compiler.seen_extern.has(file) then return
1421 self.compiler.seen_extern.add(file)
1422 tryfile = file + ".nit.c"
1423 if not tryfile.file_exists then
1424 tryfile = file + "_nit.c"
1425 if not tryfile.file_exists then return
1427 var f = new ExternCFile(tryfile.basename(""), "")
1428 self.compiler.extern_bodies.add(f)
1429 self.compiler.files_to_copy.add(tryfile)
1432 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1433 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1435 var res = new_var(mtype)
1436 self.add("{res} = {cexpr};")
1440 # Generate generic abort
1441 # used by aborts, asserts, casts, etc.
1442 fun add_abort(message: String)
1444 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1450 if self.current_node != null and self.current_node.location.file != null then
1451 self.add("PRINT_ERROR(\" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1453 self.add("PRINT_ERROR(\"\\n\");")
1455 self.add("show_backtrace(1);")
1458 # Add a dynamic cast
1459 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1461 var res = self.type_test(value, mtype, tag)
1462 self.add("if (unlikely(!{res})) \{")
1463 var cn = self.class_name_string(value)
1464 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1469 # Generate a return with the value `s
`
1470 fun ret(s: RuntimeVariable)
1472 self.assign(self.frame.returnvar.as(not null), s)
1473 self.add("goto {self.frame.returnlabel.as(not null)};")
1476 # Compile a statement (if any)
1477 fun stmt(nexpr: nullable AExpr)
1479 if nexpr == null then return
1480 var old = self.current_node
1481 self.current_node = nexpr
1483 self.current_node = old
1486 # Compile an expression an return its result
1487 # `mtype
` is the expected return type, pass null if no specific type is expected.
1488 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1490 var old = self.current_node
1491 self.current_node = nexpr
1492 var res = nexpr.expr(self).as(not null)
1493 if mtype != null then
1494 mtype = self.anchor(mtype)
1495 res = self.autobox(res, mtype)
1497 res = autoadapt(res, nexpr.mtype.as(not null))
1498 var implicit_cast_to = nexpr.implicit_cast_to
1499 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1500 add_cast(res, implicit_cast_to, "auto")
1501 res = autoadapt(res, implicit_cast_to)
1503 self.current_node = old
1507 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1508 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1510 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1511 fun debug(message: String)
1513 var node = self.current_node
1514 if node == null then
1515 print "?: {message}"
1519 self.add("/* DEBUG: {message} */")
1523 # A C function associated to a Nit method
1524 # Because of customization, a given Nit method can be compiler more that once
1525 abstract class AbstractRuntimeFunction
1527 type COMPILER: AbstractCompiler
1528 type VISITOR: AbstractCompilerVisitor
1530 # The associated Nit method
1531 var mmethoddef: MMethodDef
1533 # The mangled c name of the runtime_function
1534 # Subclasses should redefine `build_c_name
` instead
1537 var res = self.c_name_cache
1538 if res != null then return res
1539 res = self.build_c_name
1540 self.c_name_cache = res
1544 # Non cached version of `c_name
`
1545 protected fun build_c_name: String is abstract
1547 protected var c_name_cache: nullable String = null is writable
1549 # Implements a call of the runtime_function
1550 # May inline the body or generate a C function call
1551 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1553 # Generate the code for the `AbstractRuntimeFunction`
1554 # Warning: compile more than once compilation makes CC unhappy
1555 fun compile_to_c(compiler: COMPILER) is abstract
1558 # A runtime variable hold a runtime value in C.
1559 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1561 # 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.
1562 class RuntimeVariable
1563 # The name of the variable in the C code
1566 # The static type of the variable (as declard in C)
1569 # The current casted type of the variable (as known in Nit)
1570 var mcasttype: MType is writable
1572 # If the variable exaclty a mcasttype?
1573 # false (usual value) means that the variable is a mcasttype or a subtype.
1574 var is_exact: Bool = false is writable
1576 init(name: String, mtype: MType, mcasttype: MType)
1580 self.mcasttype = mcasttype
1581 assert not mtype.need_anchor
1582 assert not mcasttype.need_anchor
1585 redef fun to_s do return name
1590 if self.is_exact then
1591 exact_str = " exact"
1596 if self.mtype == self.mcasttype then
1597 type_str = "{mtype}{exact_str}"
1599 type_str = "{mtype}({mcasttype}{exact_str})"
1601 return "<{name}:{type_str}>"
1605 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1608 type VISITOR: AbstractCompilerVisitor
1610 # The associated visitor
1611 var visitor: VISITOR
1613 # The executed property.
1614 # A Method in case of a call, an attribute in case of a default initialization.
1615 var mpropdef: MPropDef
1617 # The static type of the receiver
1618 var receiver: MClassType
1620 # Arguments of the method (the first is the receiver)
1621 var arguments: Array[RuntimeVariable]
1623 # The runtime_variable associated to the return (in a function)
1624 var returnvar: nullable RuntimeVariable = null is writable
1626 # The label at the end of the property
1627 var returnlabel: nullable String = null is writable
1631 # Return the C type associated to a given Nit static type
1632 fun ctype: String do return "val*"
1634 # C type outside of the compiler code and in boxes
1635 fun ctype_extern: String do return "val*"
1637 # Short name of the `ctype
` to use in unions
1638 fun ctypename: String do return "val"
1640 # Return the name of the C structure associated to a Nit live type
1641 fun c_name: String is abstract
1642 protected var c_name_cache: nullable String is protected writable
1645 redef class MClassType
1648 var res = self.c_name_cache
1649 if res != null then return res
1650 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1651 self.c_name_cache = res
1655 redef fun ctype: String
1657 if mclass.name == "Int" then
1659 else if mclass.name == "Bool" then
1661 else if mclass.name == "Char" then
1663 else if mclass.name == "Float" then
1665 else if mclass.name == "NativeString" then
1667 else if mclass.name == "NativeArray" then
1674 redef fun ctype_extern: String
1676 if mclass.kind == extern_kind then
1683 redef fun ctypename: String
1685 if mclass.name == "Int" then
1687 else if mclass.name == "Bool" then
1689 else if mclass.name == "Char" then
1691 else if mclass.name == "Float" then
1693 else if mclass.name == "NativeString" then
1695 else if mclass.name == "NativeArray" then
1696 #return "{self.arguments.first.ctype}*"
1704 redef class MGenericType
1707 var res = self.c_name_cache
1708 if res != null then return res
1710 for t in self.arguments do
1711 res = res + t.c_name
1713 self.c_name_cache = res
1718 redef class MParameterType
1721 var res = self.c_name_cache
1722 if res != null then return res
1723 res = "{self.mclass.c_name}_FT{self.rank}"
1724 self.c_name_cache = res
1729 redef class MVirtualType
1732 var res = self.c_name_cache
1733 if res != null then return res
1734 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1735 self.c_name_cache = res
1740 redef class MNullableType
1743 var res = self.c_name_cache
1744 if res != null then return res
1745 res = "nullable_{self.mtype.c_name}"
1746 self.c_name_cache = res
1752 # Return the name of the C structure associated to a Nit class
1753 fun c_name: String do
1754 var res = self.c_name_cache
1755 if res != null then return res
1756 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1757 self.c_name_cache = res
1760 private var c_name_cache: nullable String
1763 redef class MProperty
1764 fun c_name: String do
1765 var res = self.c_name_cache
1766 if res != null then return res
1767 res = "{self.intro.c_name}"
1768 self.c_name_cache = res
1771 private var c_name_cache: nullable String
1774 redef class MPropDef
1775 type VISITOR: AbstractCompilerVisitor
1777 private var c_name_cache: nullable String
1779 # The mangled name associated to the property
1782 var res = self.c_name_cache
1783 if res != null then return res
1784 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1785 self.c_name_cache = res
1790 redef class MMethodDef
1791 # Can the body be inlined?
1792 fun can_inline(v: VISITOR): Bool
1794 if is_abstract then return true
1795 var modelbuilder = v.compiler.modelbuilder
1796 if modelbuilder.mpropdef2npropdef.has_key(self) then
1797 var npropdef = modelbuilder.mpropdef2npropdef[self]
1798 return npropdef.can_inline
1799 else if self.mproperty.name == "init" then
1800 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1807 # Inline the body in another visitor
1808 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1810 var modelbuilder = v.compiler.modelbuilder
1811 if modelbuilder.mpropdef2npropdef.has_key(self) then
1812 var npropdef = modelbuilder.mpropdef2npropdef[self]
1813 var oldnode = v.current_node
1814 v.current_node = npropdef
1815 self.compile_parameter_check(v, arguments)
1816 npropdef.compile_to_c(v, self, arguments)
1817 v.current_node = oldnode
1818 else if self.mproperty.name == "init" then
1819 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1820 var oldnode = v.current_node
1821 v.current_node = nclassdef
1822 self.compile_parameter_check(v, arguments)
1823 nclassdef.compile_to_c(v, self, arguments)
1824 v.current_node = oldnode
1831 # Generate type checks in the C code to check covariant parameters
1832 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1834 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1836 for i in [0..msignature.arity[ do
1837 # skip test for vararg since the array is instantiated with the correct polymorphic type
1838 if msignature.vararg_rank == i then continue
1840 # skip if the cast is not required
1841 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1842 if not origmtype.need_anchor then continue
1844 # get the parameter type
1845 var mtype = self.msignature.mparameters[i].mtype
1848 # note that v decides if and how to implements the cast
1849 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1850 v.add_cast(arguments[i+1], mtype, "covariance")
1857 redef class APropdef
1858 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1860 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1861 debug("Not yet implemented")
1864 fun can_inline: Bool do return true
1867 redef class AMethPropdef
1868 redef fun compile_to_c(v, mpropdef, arguments)
1870 if mpropdef.is_abstract then
1871 var cn = v.class_name_string(arguments.first)
1872 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1877 # Call the implicit super-init
1878 var auto_super_inits = self.auto_super_inits
1879 if auto_super_inits != null then
1880 var args = [arguments.first]
1881 for auto_super_init in auto_super_inits do
1882 assert auto_super_init.mproperty != mpropdef.mproperty
1884 for i in [0..auto_super_init.msignature.arity+1[ do
1885 args.add(arguments[i])
1887 assert auto_super_init.mproperty != mpropdef.mproperty
1888 v.compile_callsite(auto_super_init, args)
1891 if auto_super_call then
1892 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1895 # Try special compilation
1896 if mpropdef.is_intern then
1897 if compile_intern_to_c(v, mpropdef, arguments) then return
1898 else if mpropdef.is_extern then
1899 if mpropdef.mproperty.is_init then
1900 if compile_externinit_to_c(v, mpropdef, arguments) then return
1902 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1906 # Compile block if any
1907 var n_block = n_block
1908 if n_block != null then
1909 for i in [0..mpropdef.msignature.arity[ do
1910 var variable = self.n_signature.n_params[i].variable.as(not null)
1911 v.assign(v.variable(variable), arguments[i+1])
1918 var cn = v.class_name_string(arguments.first)
1919 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1923 redef fun can_inline
1925 if self.auto_super_inits != null then return false
1926 var nblock = self.n_block
1927 if nblock == null then return true
1928 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1929 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1933 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
1935 var pname = mpropdef.mproperty.name
1936 var cname = mpropdef.mclassdef.mclass.name
1937 var ret = mpropdef.msignature.return_mtype
1939 ret = v.resolve_for(ret, arguments.first)
1940 else if mpropdef.mproperty.is_new then
1941 ret = arguments.first.mcasttype
1943 if pname != "==" and pname != "!=" then
1944 v.adapt_signature(mpropdef, arguments)
1945 v.unbox_signature_extern(mpropdef, arguments)
1947 if cname == "Int" then
1948 if pname == "output" then
1949 v.add("printf(\"%ld\\n\", {arguments.first});")
1951 else if pname == "object_id" then
1952 v.ret(arguments.first)
1954 else if pname == "+" then
1955 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1957 else if pname == "-" then
1958 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1960 else if pname == "unary -" then
1961 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1963 else if pname == "*" then
1964 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1966 else if pname == "/" then
1967 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1969 else if pname == "%" then
1970 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1972 else if pname == "lshift" then
1973 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1975 else if pname == "rshift" then
1976 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1978 else if pname == "==" then
1979 v.ret(v.equal_test(arguments[0], arguments[1]))
1981 else if pname == "!=" then
1982 var res = v.equal_test(arguments[0], arguments[1])
1983 v.ret(v.new_expr("!{res}", ret.as(not null)))
1985 else if pname == "<" then
1986 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1988 else if pname == ">" then
1989 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1991 else if pname == "<=" then
1992 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1994 else if pname == ">=" then
1995 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1997 else if pname == "to_f" then
1998 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2000 else if pname == "ascii" then
2001 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2004 else if cname == "Char" then
2005 if pname == "output" then
2006 v.add("printf(\"%c\", {arguments.first});")
2008 else if pname == "object_id" then
2009 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2011 else if pname == "successor" then
2012 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2014 else if pname == "predecessor" then
2015 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2017 else if pname == "==" then
2018 v.ret(v.equal_test(arguments[0], arguments[1]))
2020 else if pname == "!=" then
2021 var res = v.equal_test(arguments[0], arguments[1])
2022 v.ret(v.new_expr("!{res}", ret.as(not null)))
2024 else if pname == "<" then
2025 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2027 else if pname == ">" then
2028 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2030 else if pname == "<=" then
2031 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2033 else if pname == ">=" then
2034 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2036 else if pname == "to_i" then
2037 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2039 else if pname == "ascii" then
2040 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2043 else if cname == "Bool" then
2044 if pname == "output" then
2045 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2047 else if pname == "object_id" then
2048 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2050 else if pname == "==" then
2051 v.ret(v.equal_test(arguments[0], arguments[1]))
2053 else if pname == "!=" then
2054 var res = v.equal_test(arguments[0], arguments[1])
2055 v.ret(v.new_expr("!{res}", ret.as(not null)))
2058 else if cname == "Float" then
2059 if pname == "output" then
2060 v.add("printf(\"%f\\n\", {arguments.first});")
2062 else if pname == "object_id" then
2063 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2065 else if pname == "+" then
2066 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2068 else if pname == "-" then
2069 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2071 else if pname == "unary -" then
2072 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2074 else if pname == "succ" then
2075 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2077 else if pname == "prec" then
2078 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2080 else if pname == "*" then
2081 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2083 else if pname == "/" then
2084 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2086 else if pname == "==" then
2087 v.ret(v.equal_test(arguments[0], arguments[1]))
2089 else if pname == "!=" then
2090 var res = v.equal_test(arguments[0], arguments[1])
2091 v.ret(v.new_expr("!{res}", ret.as(not null)))
2093 else if pname == "<" then
2094 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2096 else if pname == ">" then
2097 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2099 else if pname == "<=" then
2100 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2102 else if pname == ">=" then
2103 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2105 else if pname == "to_i" then
2106 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2109 else if cname == "NativeString" then
2110 if pname == "[]" then
2111 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2113 else if pname == "[]=" then
2114 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2116 else if pname == "copy_to" then
2117 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2119 else if pname == "atoi" then
2120 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2122 else if pname == "init" then
2123 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2126 else if cname == "NativeArray" then
2127 v.native_array_def(pname, ret, arguments)
2130 if pname == "exit" then
2131 v.add("exit({arguments[1]});")
2133 else if pname == "sys" then
2134 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2136 else if pname == "calloc_string" then
2137 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2139 else if pname == "calloc_array" then
2140 v.calloc_array(ret.as(not null), arguments)
2142 else if pname == "object_id" then
2143 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2145 else if pname == "is_same_type" then
2146 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2148 else if pname == "is_same_instance" then
2149 v.ret(v.equal_test(arguments[0], arguments[1]))
2151 else if pname == "output_class_name" then
2152 var nat = v.class_name_string(arguments.first)
2153 v.add("printf(\"%s\\n\", {nat});")
2155 else if pname == "native_class_name" then
2156 var nat = v.class_name_string(arguments.first)
2157 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2159 else if pname == "force_garbage_collection" then
2160 v.add("nit_gcollect();")
2162 else if pname == "native_argc" then
2163 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2165 else if pname == "native_argv" then
2166 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2172 # Compile an extern method
2173 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2174 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2177 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2179 externname = at.arg_as_string(v.compiler.modelbuilder)
2180 if externname == null then return false
2182 var nextern = self.n_extern
2183 if nextern == null then return false
2184 externname = nextern.text.substring(1, nextern.text.length-2)
2186 if location.file != null then
2187 var file = location.file.filename
2190 var res: nullable RuntimeVariable = null
2191 var ret = mpropdef.msignature.return_mtype
2193 ret = v.resolve_for(ret, arguments.first)
2194 res = v.new_var_extern(ret)
2196 v.adapt_signature(mpropdef, arguments)
2197 v.unbox_signature_extern(mpropdef, arguments)
2200 v.add("{externname}({arguments.join(", ")});")
2202 v.add("{res} = {externname}({arguments.join(", ")});")
2203 res = v.box_extern(res, ret.as(not null))
2209 # Compile an extern factory
2210 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2211 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2214 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2216 externname = at.arg_as_string(v.compiler.modelbuilder)
2217 if externname == null then return false
2219 var nextern = self.n_extern
2220 if nextern == null then return false
2221 externname = nextern.text.substring(1, nextern.text.length-2)
2223 if location.file != null then
2224 var file = location.file.filename
2227 v.adapt_signature(mpropdef, arguments)
2228 v.unbox_signature_extern(mpropdef, arguments)
2229 var ret = arguments.first.mtype
2230 var res = v.new_var_extern(ret)
2234 v.add("{res} = {externname}({arguments.join(", ")});")
2235 res = v.box_extern(res, ret)
2241 redef class AAttrPropdef
2242 redef fun compile_to_c(v, mpropdef, arguments)
2244 if mpropdef == mreadpropdef then
2245 assert arguments.length == 1
2249 assert nexpr != null
2251 var ret = self.mpropdef.static_mtype
2252 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2253 var guard = self.mlazypropdef.mproperty
2255 set = v.isset_attribute(self.mpropdef.mproperty, arguments.first)
2257 set = v.read_attribute(guard, arguments.first)
2259 v.add("if(likely({set})) \{")
2260 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2262 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2263 v.write_attribute(self.mpropdef.mproperty, arguments.first, value)
2264 v.assign(res, value)
2266 var true_v = v.new_expr("1", v.bool_type)
2267 v.write_attribute(guard, arguments.first, true_v)
2271 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2273 v.assign(v.frame.returnvar.as(not null), res)
2274 else if mpropdef == mwritepropdef then
2275 assert arguments.length == 2
2276 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2278 var ret = self.mpropdef.static_mtype
2279 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2281 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.new_expr("1", v.bool_type))
2289 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2291 var nexpr = self.n_expr
2292 if nexpr != null and not is_lazy then
2293 var oldnode = v.current_node
2294 v.current_node = self
2295 var old_frame = v.frame
2296 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2298 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2299 v.write_attribute(self.mpropdef.mproperty, recv, value)
2301 v.current_node = oldnode
2305 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2307 var nexpr = self.n_expr
2308 if nexpr != null then return
2310 var oldnode = v.current_node
2311 v.current_node = self
2312 var old_frame = v.frame
2313 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2315 # Force read to check the initialization
2316 v.read_attribute(self.mpropdef.mproperty, recv)
2318 v.current_node = oldnode
2322 redef class AClassdef
2323 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2325 if mpropdef == self.mfree_init then
2326 if mpropdef.mproperty.is_root_init then
2327 assert self.super_inits == null
2328 assert arguments.length == 1
2329 if not mpropdef.is_intro then
2330 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2335 var super_inits = self.super_inits
2336 if super_inits != null then
2337 var args_of_super = arguments
2338 if arguments.length > 1 then args_of_super = [arguments.first]
2339 for su in super_inits do
2340 v.send(su, args_of_super)
2344 var recv = arguments.first
2346 # Collect undefined attributes
2347 for npropdef in self.n_propdefs do
2348 if npropdef isa AAttrPropdef and npropdef.n_expr == null and not npropdef.noinit then
2349 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
2360 # Try to compile self as an expression
2361 # Do not call this method directly, use `v
.expr
` instead
2362 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2364 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2365 var mtype = self.mtype
2366 if mtype == null then
2369 var res = v.new_var(mtype)
2370 v.add("/* {res} = NOT YET {class_name} */")
2375 # Try to compile self as a statement
2376 # Do not call this method directly, use `v
.stmt
` instead
2377 private fun stmt(v: AbstractCompilerVisitor)
2380 if res != null then v.add("{res};")
2384 redef class ABlockExpr
2387 for e in self.n_expr do v.stmt(e)
2391 var last = self.n_expr.last
2392 for e in self.n_expr do
2393 if e == last then break
2396 return v.expr(last, null)
2400 redef class AVardeclExpr
2403 var variable = self.variable.as(not null)
2404 var ne = self.n_expr
2406 var i = v.expr(ne, variable.declared_type)
2407 v.assign(v.variable(variable), i)
2412 redef class AVarExpr
2415 var res = v.variable(self.variable.as(not null))
2416 var mtype = self.mtype.as(not null)
2417 return v.autoadapt(res, mtype)
2421 redef class AVarAssignExpr
2424 var variable = self.variable.as(not null)
2425 var i = v.expr(self.n_value, variable.declared_type)
2426 v.assign(v.variable(variable), i)
2430 var variable = self.variable.as(not null)
2431 var i = v.expr(self.n_value, variable.declared_type)
2432 v.assign(v.variable(variable), i)
2437 redef class AVarReassignExpr
2440 var variable = self.variable.as(not null)
2441 var vari = v.variable(variable)
2442 var value = v.expr(self.n_value, variable.declared_type)
2443 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2445 v.assign(v.variable(variable), res)
2449 redef class ASelfExpr
2450 redef fun expr(v) do return v.frame.arguments.first
2453 redef class AContinueExpr
2454 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2457 redef class ABreakExpr
2458 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2461 redef class AReturnExpr
2464 var nexpr = self.n_expr
2465 if nexpr != null then
2466 var returnvar = v.frame.returnvar.as(not null)
2467 var i = v.expr(nexpr, returnvar.mtype)
2468 v.assign(returnvar, i)
2470 v.add("goto {v.frame.returnlabel.as(not null)};")
2474 redef class AAbortExpr
2475 redef fun stmt(v) do v.add_abort("Aborted")
2481 var cond = v.expr_bool(self.n_expr)
2482 v.add("if ({cond})\{")
2491 var res = v.new_var(self.mtype.as(not null))
2492 var cond = v.expr_bool(self.n_expr)
2493 v.add("if ({cond})\{")
2494 v.assign(res, v.expr(self.n_then.as(not null), null))
2496 v.assign(res, v.expr(self.n_else.as(not null), null))
2502 redef class AIfexprExpr
2505 var res = v.new_var(self.mtype.as(not null))
2506 var cond = v.expr_bool(self.n_expr)
2507 v.add("if ({cond})\{")
2508 v.assign(res, v.expr(self.n_then, null))
2510 v.assign(res, v.expr(self.n_else, null))
2519 v.stmt(self.n_block)
2520 var escapemark = self.escapemark
2521 if escapemark != null then
2522 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2527 redef class AWhileExpr
2531 var cond = v.expr_bool(self.n_expr)
2532 v.add("if (!{cond}) break;")
2533 v.stmt(self.n_block)
2534 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2536 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2540 redef class ALoopExpr
2544 v.stmt(self.n_block)
2545 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2547 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2551 redef class AForExpr
2554 # Shortcut on explicit range
2555 # Avoid the instantiation of the range and the iterator
2556 var nexpr = self.n_expr
2557 if self.variables.length == 1 and nexpr isa ARangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2558 var from = v.expr(nexpr.n_expr, null)
2559 var to = v.expr(nexpr.n_expr2, null)
2560 var variable = v.variable(variables.first)
2561 var one = v.new_expr("1", v.get_class("Int").mclass_type)
2563 v.assign(variable, from)
2564 v.add("for(;;) \{ /* shortcut range */")
2567 if nexpr isa AOrangeExpr then
2568 ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2570 ok = v.send(v.get_property("<=", variable.mtype), [variable, to])
2573 v.add("if(!{ok}) break;")
2575 v.stmt(self.n_block)
2577 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2578 var succ = v.send(v.get_property("successor", variable.mtype), [variable, one])
2580 v.assign(variable, succ)
2582 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2586 var cl = v.expr(self.n_expr, null)
2587 var it_meth = self.method_iterator
2588 assert it_meth != null
2589 var it = v.compile_callsite(it_meth, [cl])
2592 var isok_meth = self.method_is_ok
2593 assert isok_meth != null
2594 var ok = v.compile_callsite(isok_meth, [it])
2596 v.add("if(!{ok}) break;")
2597 if self.variables.length == 1 then
2598 var item_meth = self.method_item
2599 assert item_meth != null
2600 var i = v.compile_callsite(item_meth, [it])
2602 v.assign(v.variable(variables.first), i)
2603 else if self.variables.length == 2 then
2604 var key_meth = self.method_key
2605 assert key_meth != null
2606 var i = v.compile_callsite(key_meth, [it])
2608 v.assign(v.variable(variables[0]), i)
2609 var item_meth = self.method_item
2610 assert item_meth != null
2611 i = v.compile_callsite(item_meth, [it])
2613 v.assign(v.variable(variables[1]), i)
2617 v.stmt(self.n_block)
2618 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2619 var next_meth = self.method_next
2620 assert next_meth != null
2621 v.compile_callsite(next_meth, [it])
2623 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2627 redef class AAssertExpr
2630 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2632 var cond = v.expr_bool(self.n_expr)
2633 v.add("if (unlikely(!{cond})) \{")
2637 v.add_abort("Assert '{nid.text}' failed")
2639 v.add_abort("Assert failed")
2648 var res = v.new_var(self.mtype.as(not null))
2649 var i1 = v.expr_bool(self.n_expr)
2650 v.add("if ({i1}) \{")
2653 var i2 = v.expr_bool(self.n_expr2)
2654 v.add("{res} = {i2};")
2660 redef class AImpliesExpr
2663 var res = v.new_var(self.mtype.as(not null))
2664 var i1 = v.expr_bool(self.n_expr)
2665 v.add("if (!{i1}) \{")
2668 var i2 = v.expr_bool(self.n_expr2)
2669 v.add("{res} = {i2};")
2675 redef class AAndExpr
2678 var res = v.new_var(self.mtype.as(not null))
2679 var i1 = v.expr_bool(self.n_expr)
2680 v.add("if (!{i1}) \{")
2683 var i2 = v.expr_bool(self.n_expr2)
2684 v.add("{res} = {i2};")
2690 redef class ANotExpr
2693 var cond = v.expr_bool(self.n_expr)
2694 return v.new_expr("!{cond}", self.mtype.as(not null))
2698 redef class AOrElseExpr
2701 var res = v.new_var(self.mtype.as(not null))
2702 var i1 = v.expr(self.n_expr, null)
2703 v.add("if ({i1}!=NULL) \{")
2706 var i2 = v.expr(self.n_expr2, null)
2713 redef class AIntExpr
2714 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2717 redef class AFloatExpr
2718 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2721 redef class ACharExpr
2722 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2725 redef class AArrayExpr
2728 var mtype = self.mtype.as(MClassType).arguments.first
2729 var array = new Array[RuntimeVariable]
2730 for nexpr in self.n_exprs.n_exprs do
2731 var i = v.expr(nexpr, mtype)
2734 return v.array_instance(array, mtype)
2738 redef class AStringFormExpr
2739 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2742 redef class ASuperstringExpr
2745 var array = new Array[RuntimeVariable]
2746 for ne in self.n_exprs do
2747 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2748 var i = v.expr(ne, null)
2751 var a = v.array_instance(array, v.object_type)
2752 var res = v.send(v.get_property("to_s", a.mtype), [a])
2757 redef class ACrangeExpr
2760 var i1 = v.expr(self.n_expr, null)
2761 var i2 = v.expr(self.n_expr2, null)
2762 var mtype = self.mtype.as(MClassType)
2763 var res = v.init_instance(mtype)
2764 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2769 redef class AOrangeExpr
2772 var i1 = v.expr(self.n_expr, null)
2773 var i2 = v.expr(self.n_expr2, null)
2774 var mtype = self.mtype.as(MClassType)
2775 var res = v.init_instance(mtype)
2776 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2781 redef class ATrueExpr
2782 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2785 redef class AFalseExpr
2786 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2789 redef class ANullExpr
2790 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2793 redef class AIsaExpr
2796 var i = v.expr(self.n_expr, null)
2797 return v.type_test(i, self.cast_type.as(not null), "isa")
2801 redef class AAsCastExpr
2804 var i = v.expr(self.n_expr, null)
2805 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2807 v.add_cast(i, self.mtype.as(not null), "as")
2812 redef class AAsNotnullExpr
2815 var i = v.expr(self.n_expr, null)
2816 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2818 if i.mtype.ctype != "val*" then return i
2820 v.add("if (unlikely({i} == NULL)) \{")
2821 v.add_abort("Cast failed")
2827 redef class AParExpr
2828 redef fun expr(v) do return v.expr(self.n_expr, null)
2831 redef class AOnceExpr
2834 var mtype = self.mtype.as(not null)
2835 var name = v.get_name("varonce")
2836 var guard = v.get_name(name + "_guard")
2837 v.add_decl("static {mtype.ctype} {name};")
2838 v.add_decl("static int {guard};")
2839 var res = v.new_var(mtype)
2840 v.add("if ({guard}) \{")
2841 v.add("{res} = {name};")
2843 var i = v.expr(self.n_expr, mtype)
2844 v.add("{res} = {i};")
2845 v.add("{name} = {res};")
2846 v.add("{guard} = 1;")
2852 redef class ASendExpr
2855 var recv = v.expr(self.n_expr, null)
2857 for a in self.raw_arguments do
2858 args.add(v.expr(a, null))
2860 return v.compile_callsite(self.callsite.as(not null), args)
2864 redef class ASendReassignFormExpr
2867 var recv = v.expr(self.n_expr, null)
2869 for a in self.raw_arguments do
2870 args.add(v.expr(a, null))
2872 var value = v.expr(self.n_value, null)
2874 var left = v.compile_callsite(self.callsite.as(not null), args)
2877 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2881 v.compile_callsite(self.write_callsite.as(not null), args)
2885 redef class ASuperExpr
2888 var recv = v.frame.arguments.first
2890 for a in self.n_args.n_exprs do
2891 args.add(v.expr(a, null))
2894 var callsite = self.callsite
2895 if callsite != null then
2896 # Add additionnals arguments for the super init call
2897 if args.length == 1 then
2898 for i in [0..callsite.msignature.arity[ do
2899 args.add(v.frame.arguments[i+1])
2903 var res = v.compile_callsite(callsite, args)
2907 if args.length == 1 then
2908 args = v.frame.arguments
2911 # stantard call-next-method
2912 return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
2916 redef class ANewExpr
2919 var mtype = self.mtype.as(MClassType)
2921 var ctype = mtype.ctype
2922 if mtype.mclass.name == "NativeArray" then
2923 assert self.n_args.n_exprs.length == 1
2924 var l = v.expr(self.n_args.n_exprs.first, null)
2925 assert mtype isa MGenericType
2926 var elttype = mtype.arguments.first
2927 return v.native_array_instance(elttype, l)
2928 else if ctype == "val*" then
2929 recv = v.init_instance(mtype)
2930 else if ctype == "char*" then
2931 recv = v.new_expr("NULL/*special!*/", mtype)
2933 recv = v.new_expr("({ctype})0/*special!*/", mtype)
2936 for a in self.n_args.n_exprs do
2937 args.add(v.expr(a, null))
2939 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2940 if res2 != null then
2941 #self.debug("got {res2} from {mproperty}. drop {recv}")
2948 redef class AAttrExpr
2951 var recv = v.expr(self.n_expr, null)
2952 var mproperty = self.mproperty.as(not null)
2953 return v.read_attribute(mproperty, recv)
2957 redef class AAttrAssignExpr
2960 var recv = v.expr(self.n_expr, null)
2961 var i = v.expr(self.n_value, null)
2962 var mproperty = self.mproperty.as(not null)
2963 v.write_attribute(mproperty, recv, i)
2967 redef class AAttrReassignExpr
2970 var recv = v.expr(self.n_expr, null)
2971 var value = v.expr(self.n_value, null)
2972 var mproperty = self.mproperty.as(not null)
2973 var attr = v.read_attribute(mproperty, recv)
2974 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2976 v.write_attribute(mproperty, recv, res)
2980 redef class AIssetAttrExpr
2983 var recv = v.expr(self.n_expr, null)
2984 var mproperty = self.mproperty.as(not null)
2985 return v.isset_attribute(mproperty, recv)
2989 redef class ADebugTypeExpr
2998 redef class Array[E]
2999 # Return a new `Array` with the elements only contened in self and not in `o
`
3000 fun -(o: Array[E]): Array[E] do
3001 var res = new Array[E]
3002 for e in self do if not o.has(e) then res.add(e)
3008 # All `MProperty` associated to all `MClassDef` of `mclass
`
3009 fun properties(mclass: MClass): Set[MProperty] do
3010 if not self.properties_cache.has_key(mclass) then
3011 var properties = new HashSet[MProperty]
3012 var parents = new Array[MClass]
3013 if self.flatten_mclass_hierarchy.has(mclass) then
3014 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3016 for parent in parents do
3017 properties.add_all(self.properties(parent))
3019 for mclassdef in mclass.mclassdefs do
3020 if not self.in_importation <= mclassdef.mmodule then continue
3021 for mprop in mclassdef.intro_mproperties do
3022 properties.add(mprop)
3025 self.properties_cache[mclass] = properties
3027 return properties_cache[mclass]
3029 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3031 # Write FFI and nitni results to file
3032 fun finalize_ffi(c: AbstractCompiler) do end
3034 # Give requided addinional system libraries (as given to LD_LIBS)
3035 # Note: can return null instead of an empty set
3036 fun collect_linker_libs: nullable Set[String] do return null
3039 # Create a tool context to handle options and paths
3040 var toolcontext = new ToolContext
3042 var opt_mixins = new OptionArray("Additionals module to min-in", "-m")
3043 toolcontext.option_context.add_option(opt_mixins)
3045 toolcontext.tooldescription = "Usage: nitg [OPTION]... file.nit...\nCompiles Nit programs."
3047 # We do not add other options, so process them now!
3048 toolcontext.process_options(args)
3050 # We need a model to collect stufs
3051 var model = new Model
3052 # An a model builder to parse files
3053 var modelbuilder = new ModelBuilder(model, toolcontext)
3055 var arguments = toolcontext.option_context.rest
3056 if arguments.length > 1 and toolcontext.opt_output.value != null then
3057 print "Error: --output needs a single source file. Do you prefer --dir?"
3061 # Here we load an process all modules passed on the command line
3062 var mmodules = modelbuilder.parse(arguments)
3063 var mixins = modelbuilder.parse(opt_mixins.value)
3065 if mmodules.is_empty then return
3066 modelbuilder.run_phases
3068 for mmodule in mmodules do
3069 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3071 if not mixins.is_empty then
3074 toolcontext.run_global_phases(ms)