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
27 # Add compiling options
28 redef class ToolContext
30 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
32 var opt_dir
: OptionString = new OptionString("Output directory", "--dir")
34 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
36 var opt_no_main
: OptionBool = new OptionBool("Do not generate main entry point", "--no-main")
38 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
40 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
42 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
44 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
46 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
47 # --no-check-covariance
48 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
49 # --no-check-attr-isset
50 var opt_no_check_attr_isset
: OptionBool = new OptionBool("Disable isset tests before each attribute access (dangerous)", "--no-check-attr-isset")
52 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
54 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
56 var opt_no_check_null
: OptionBool = new OptionBool("Disable tests of null receiver (dangerous)", "--no-check-null")
58 var opt_no_check_all
: OptionBool = new OptionBool("Disable all tests (dangerous)", "--no-check-all")
59 # --typing-test-metrics
60 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
61 # --invocation-metrics
62 var opt_invocation_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
63 # --isset-checks-metrics
64 var opt_isset_checks_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of isset checks before attributes access", "--isset-checks-metrics")
66 var opt_stacktrace
: OptionString = new OptionString("Control the generation of stack traces", "--stacktrace")
68 var opt_no_gcc_directive
= new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
70 var opt_release
= new OptionBool("Compile in release mode and finalize application", "--release")
75 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
)
76 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
)
77 self.option_context
.add_option
(self.opt_typing_test_metrics
, self.opt_invocation_metrics
, self.opt_isset_checks_metrics
)
78 self.option_context
.add_option
(self.opt_stacktrace
)
79 self.option_context
.add_option
(self.opt_no_gcc_directive
)
80 self.option_context
.add_option
(self.opt_release
)
83 redef fun process_options
(args
)
87 var st
= opt_stacktrace
.value
88 if st
== "none" or st
== "libunwind" or st
== "nitstack" then
90 else if st
== "auto" or st
== null then
92 opt_stacktrace
.value
= "nitstack"
94 print
"Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `nitstack` or `auto`."
98 if opt_output
.value
!= null and opt_dir
.value
!= null then
99 print
"Error: cannot use both --dir and --output"
103 if opt_no_check_all
.value
then
104 opt_no_check_covariance
.value
= true
105 opt_no_check_attr_isset
.value
= true
106 opt_no_check_assert
.value
= true
107 opt_no_check_autocast
.value
= true
108 opt_no_check_null
.value
= true
113 redef class ModelBuilder
114 # The compilation directory
115 var compile_dir
: String
117 # Simple indirection to `Toolchain::write_and_make`
118 protected fun write_and_make
(compiler
: AbstractCompiler)
120 var platform
= compiler
.mainmodule
.target_platform
122 if platform
== null then
123 toolchain
= new MakefileToolchain(toolcontext
)
125 toolchain
= platform
.toolchain
(toolcontext
)
127 compile_dir
= toolchain
.compile_dir
128 toolchain
.write_and_make compiler
133 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
137 var toolcontext
: ToolContext
139 fun compile_dir
: String
141 var compile_dir
= toolcontext
.opt_compile_dir
.value
142 if compile_dir
== null then compile_dir
= ".nit_compile"
146 fun write_and_make
(compiler
: AbstractCompiler) is abstract
149 class MakefileToolchain
151 # The list of directories to search for included C headers (-I for C compilers)
152 # The list is initially set with :
153 # * the toolcontext --cc-path option
154 # * the NIT_CC_PATH environment variable
155 # * `toolcontext.nit_dir`
156 # Path can be added (or removed) by the client
157 var cc_paths
= new Array[String]
159 protected fun gather_cc_paths
161 # Look for the the Nit clib path
162 var path_env
= toolcontext
.nit_dir
163 if path_env
!= null then
164 var libname
= "{path_env}/clib"
165 if libname
.file_exists
then cc_paths
.add
(libname
)
168 if cc_paths
.is_empty
then
169 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
172 # Add user defined cc_paths
173 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
175 path_env
= "NIT_CC_PATH".environ
176 if not path_env
.is_empty
then
177 cc_paths
.append
(path_env
.split_with
(':'))
181 redef fun write_and_make
(compiler
)
185 var mainmodule
= compiler
.mainmodule
186 var compile_dir
= compile_dir
188 # Generate the .h and .c files
189 # A single C file regroups many compiled rumtime functions
190 # 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
192 self.toolcontext
.info
("*** WRITING C ***", 1)
196 var cfiles
= new Array[String]
197 write_files
(compiler
, compile_dir
, cfiles
)
199 # Generate the Makefile
201 write_makefile
(compiler
, compile_dir
, cfiles
)
204 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
206 # Execute the Makefile
208 if self.toolcontext
.opt_no_cc
.value
then return
211 self.toolcontext
.info
("*** COMPILING C ***", 1)
213 compile_c_code
(compiler
, compile_dir
)
216 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
219 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
221 var platform
= compiler
.mainmodule
.target_platform
222 if self.toolcontext
.opt_stacktrace
.value
== "nitstack" and (platform
== null or platform
.supports_libunwind
) then compiler
.build_c_to_nit_bindings
223 var cc_opt_with_libgc
= "-DWITH_LIBGC"
224 if platform
!= null and not platform
.supports_libgc
then cc_opt_with_libgc
= ""
226 # Add gc_choser.h to aditionnal bodies
227 var gc_chooser
= new ExternCFile("gc_chooser.c", cc_opt_with_libgc
)
228 compiler
.extern_bodies
.add
(gc_chooser
)
229 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
230 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
233 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
234 for m
in compiler
.mainmodule
.in_importation
.greaters
do
235 compiler
.finalize_ffi_for_module
(m
)
238 # Copy original .[ch] files to compile_dir
239 for src
in compiler
.files_to_copy
do
240 var basename
= src
.basename
("")
241 var dst
= "{compile_dir}/{basename}"
245 var hfilename
= compiler
.header
.file
.name
+ ".h"
246 var hfilepath
= "{compile_dir}/{hfilename}"
247 var h
= new OFStream.open
(hfilepath
)
248 for l
in compiler
.header
.decl_lines
do
252 for l
in compiler
.header
.lines
do
258 for f
in compiler
.files
do
260 var hfile
: nullable OFStream = null
262 var cfilename
= "{f.name}.0.h"
263 var cfilepath
= "{compile_dir}/{cfilename}"
264 hfile
= new OFStream.open
(cfilepath
)
265 hfile
.write
"#include \"{hfilename}\
"\n"
266 for key
in f
.required_declarations
do
267 if not compiler
.provided_declarations
.has_key
(key
) then
268 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
270 node
.debug
"No provided declaration for {key}"
272 print
"No provided declaration for {key}"
276 hfile
.write compiler
.provided_declarations
[key
]
280 var file
: nullable OFStream = null
281 for vis
in f
.writers
do
282 if vis
== compiler
.header
then continue
283 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
284 if total_lines
== 0 then continue
286 if file
== null or count
> 10000 then
288 if file
!= null then file
.close
289 cfilename
= "{f.name}.{i}.c"
290 cfilepath
= "{compile_dir}/{cfilename}"
291 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
292 cfiles
.add
(cfilename
)
293 file
= new OFStream.open
(cfilepath
)
294 file
.write
"#include \"{f.name}.0.h\
"\n"
297 for l
in vis
.decl_lines
do
301 for l
in vis
.lines
do
306 if file
!= null then file
.close
309 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
312 fun makefile_name
(mainmodule
: MModule): String do return "{mainmodule.name}.mk"
314 fun default_outname
(mainmodule
: MModule): String
316 # Search a non fictive module
317 var res
= mainmodule
.name
318 while mainmodule
.is_fictive
do
319 mainmodule
= mainmodule
.in_importation
.direct_greaters
.first
320 res
= mainmodule
.name
325 # Combine options and platform informations to get the final path of the outfile
326 fun outfile
(mainmodule
: MModule): String
328 var res
= self.toolcontext
.opt_output
.value
329 if res
!= null then return res
330 res
= default_outname
(mainmodule
)
331 var dir
= self.toolcontext
.opt_dir
.value
332 if dir
!= null then return dir
.join_path
(res
)
336 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
338 var mainmodule
= compiler
.mainmodule
339 var platform
= compiler
.mainmodule
.target_platform
341 var outname
= outfile
(mainmodule
)
343 var orig_dir
= compile_dir
.relpath
(".")
344 var outpath
= orig_dir
.join_path
(outname
).simplify_path
345 var makename
= makefile_name
(mainmodule
)
346 var makepath
= "{compile_dir}/{makename}"
347 var makefile
= new OFStream.open
(makepath
)
351 cc_includes
+= " -I \"" + p + "\
""
354 var linker_options
= new HashSet[String]
355 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
356 for m
in mainmodule
.in_importation
.greaters
do
357 var libs
= m
.collect_linker_libs
358 if libs
!= null then linker_options
.add_all
(libs
)
361 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")
363 var ost
= toolcontext
.opt_stacktrace
.value
364 if (ost
== "libunwind" or ost
== "nitstack") and (platform
== null or platform
.supports_libunwind
) then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
366 # Dynamic adaptations
367 # While `platform` enable complex toolchains, they are statically applied
368 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
370 # Check and adapt the targeted system
371 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
372 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
373 # remove -lunwind since it is already included on macosx
374 makefile
.write
("\tNEED_LIBUNWIND :=\n")
375 makefile
.write
("endif\n\n")
377 # Check and adapt for the compiler used
378 # clang need an additionnal `-Qunused-arguments`
379 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
381 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
383 makefile
.write
("all: {outpath}\n\n")
385 var ofiles
= new Array[String]
386 var dep_rules
= new Array[String]
387 # Compile each generated file
389 var o
= f
.strip_extension
(".c") + ".o"
390 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
395 var java_files
= new Array[ExternFile]
397 # Compile each required extern body into a specific .o
398 for f
in compiler
.extern_bodies
do
399 var o
= f
.makefile_rule_name
400 var ff
= f
.filename
.basename
("")
401 makefile
.write
("{o}: {ff}\n")
402 makefile
.write
("\t{f.makefile_rule_content}\n\n")
403 dep_rules
.add
(f
.makefile_rule_name
)
405 if f
.compiles_to_o_file
then ofiles
.add
(o
)
406 if f
.add_to_jar
then java_files
.add
(f
)
409 if not java_files
.is_empty
then
410 var jar_file
= "{outpath}.jar"
412 var class_files_array
= new Array[String]
413 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
414 var class_files
= class_files_array
.join
(" ")
416 makefile
.write
("{jar_file}: {class_files}\n")
417 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
418 dep_rules
.add jar_file
422 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
424 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
426 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
429 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
431 var makename
= makefile_name
(compiler
.mainmodule
)
433 var makeflags
= self.toolcontext
.opt_make_flags
.value
434 if makeflags
== null then makeflags
= ""
435 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
438 if self.toolcontext
.verbose_level
>= 3 then
439 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
441 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
444 toolcontext
.error
(null, "make failed! Error code: {res}.")
449 # Singleton that store the knowledge about the compilation process
450 abstract class AbstractCompiler
451 type VISITOR: AbstractCompilerVisitor
453 # Table corresponding c_names to nit names (methods)
454 var names
= new HashMap[String, String]
456 # The main module of the program currently compiled
457 # Is assigned during the separate compilation
458 var mainmodule
: MModule is writable
460 # The real main module of the program
461 var realmainmodule
: MModule
463 # The modeulbuilder used to know the model and the AST
464 var modelbuilder
: ModelBuilder is protected writable
466 # Is hardening asked? (see --hardening)
467 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
469 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
471 self.mainmodule
= mainmodule
472 self.realmainmodule
= mainmodule
473 self.modelbuilder
= modelbuilder
476 # Force the creation of a new file
477 # The point is to avoid contamination between must-be-compiled-separately files
478 fun new_file
(name
: String): CodeFile
480 var f
= new CodeFile(name
)
485 # The list of all associated files
486 # Used to generate .c files
487 var files
: List[CodeFile] = new List[CodeFile]
489 # Initialize a visitor specific for a compiler engine
490 fun new_visitor
: VISITOR is abstract
492 # Where global declaration are stored (the main .h)
493 var header
: CodeWriter is writable
495 # Provide a declaration that can be requested (before or latter) by a visitor
496 fun provide_declaration
(key
: String, s
: String)
498 if self.provided_declarations
.has_key
(key
) then
499 assert self.provided_declarations
[key
] == s
501 self.provided_declarations
[key
] = s
504 private var provided_declarations
= new HashMap[String, String]
506 private var requirers_of_declarations
= new HashMap[String, ANode]
508 # Builds the .c and .h files to be used when generating a Stack Trace
509 # Binds the generated C function names to Nit function names
510 fun build_c_to_nit_bindings
512 var compile_dir
= modelbuilder
.compile_dir
514 var stream
= new OFStream.open
("{compile_dir}/c_functions_hash.c")
515 stream
.write
("#include <string.h>\n")
516 stream
.write
("#include <stdlib.h>\n")
517 stream
.write
("#include \"c_functions_hash
.h\
"\n")
518 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
519 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
520 stream
.write
("char* procname = malloc(len+1);")
521 stream
.write
("memcpy(procname, procproc, len);")
522 stream
.write
("procname[len] = '\\0';")
523 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
524 for i
in names
.keys
do
527 stream.write("\
",\"")
528 stream.write(names[i])
529 stream.write("\
"\},\n")
531 stream
.write
("\};\n")
532 stream
.write
("int i;")
533 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
534 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
535 stream
.write
("free(procname);")
536 stream
.write
("return map[i].nit_name;")
539 stream
.write
("free(procname);")
540 stream
.write
("return NULL;")
544 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
545 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
548 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
552 # This method call compile_header_strucs method that has to be refined
553 fun compile_header
do
555 var toolctx
= modelbuilder
.toolcontext
556 self.header
.add_decl
("#include <stdlib.h>")
557 self.header
.add_decl
("#include <stdio.h>")
558 self.header
.add_decl
("#include <string.h>")
559 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
560 self.header
.add_decl
("#ifdef ANDROID")
561 self.header
.add_decl
(" #include <android/log.h>")
562 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
563 self.header
.add_decl
("#else")
564 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
565 self.header
.add_decl
("#endif")
567 compile_header_structs
568 compile_nitni_structs
570 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
571 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
572 # Signal handler function prototype
573 self.header
.add_decl
("void show_backtrace(int);")
575 self.header
.add_decl
("void show_backtrace(int) __attribute__ ((noreturn));")
578 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
579 self.header
.add_decl
("#define likely(x) (x)")
580 self.header
.add_decl
("#define unlikely(x) (x)")
581 else if gccd_disable
.has
("correct-likely") then
582 # invert the `likely` definition
583 # Used by masochists to bench the worst case
584 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
585 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
587 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
588 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
591 # Global variable used by intern methods
592 self.header
.add_decl
("extern int glob_argc;")
593 self.header
.add_decl
("extern char **glob_argv;")
594 self.header
.add_decl
("extern val *glob_sys;")
597 # Declaration of structures for live Nit types
598 protected fun compile_header_structs
is abstract
600 # Declaration of structures for nitni undelying the FFI
601 protected fun compile_nitni_structs
603 self.header
.add_decl
"""
604 /* Native reference to Nit objects */
605 /* This structure is used to represent every Nit type in extern methods and custom C code. */
607 struct nitni_ref *next,
608 *prev; /* adjacent global references in global list */
609 int count; /* number of time this global reference has been marked */
612 /* List of global references from C code to Nit objects */
613 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
614 struct nitni_global_ref_list_t {
615 struct nitni_ref *head, *tail;
617 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
619 /* Initializer of global reference list */
620 extern void nitni_global_ref_list_init();
622 /* Intern function to add a global reference to the list */
623 extern void nitni_global_ref_add( struct nitni_ref *ref );
625 /* Intern function to remove a global reference from the list */
626 extern void nitni_global_ref_remove( struct nitni_ref *ref );
628 /* Increase count on an existing global reference */
629 extern void nitni_global_ref_incr( struct nitni_ref *ref );
631 /* Decrease count on an existing global reference */
632 extern void nitni_global_ref_decr( struct nitni_ref *ref );
636 fun compile_finalizer_function
638 var finalizable_type
= mainmodule
.finalizable_type
639 if finalizable_type
== null then return
641 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
643 if finalize_meth
== null then
644 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
648 var v
= self.new_visitor
649 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
650 var recv
= v
.new_expr
("obj", finalizable_type
)
651 v
.send
(finalize_meth
, [recv
])
655 # Generate the main C function.
659 # * allocate the Sys object if it exists
660 # * call init if is exists
661 # * call main if it exists
662 fun compile_main_function
664 var v
= self.new_visitor
665 v
.add_decl
("#include <signal.h>")
666 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
667 var platform
= mainmodule
.target_platform
669 if platform
!= null and not platform
.supports_libunwind
then ost
= "none"
671 var no_main
= (platform
!= null and platform
.no_main
) or modelbuilder
.toolcontext
.opt_no_main
.value
673 if ost
== "nitstack" or ost
== "libunwind" then
674 v
.add_decl
("#define UNW_LOCAL_ONLY")
675 v
.add_decl
("#include <libunwind.h>")
676 if ost
== "nitstack" then
677 v
.add_decl
("#include \"c_functions_hash
.h\
"")
680 v
.add_decl
("int glob_argc;")
681 v
.add_decl
("char **glob_argv;")
682 v
.add_decl
("val *glob_sys;")
684 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
685 for tag
in count_type_test_tags
do
686 v
.add_decl
("long count_type_test_resolved_{tag};")
687 v
.add_decl
("long count_type_test_unresolved_{tag};")
688 v
.add_decl
("long count_type_test_skipped_{tag};")
689 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
690 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
691 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
695 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
696 v
.add_decl
("long count_invoke_by_tables;")
697 v
.add_decl
("long count_invoke_by_direct;")
698 v
.add_decl
("long count_invoke_by_inline;")
699 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
700 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
701 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
704 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
705 v
.add_decl
("long count_attr_reads = 0;")
706 v
.add_decl
("long count_isset_checks = 0;")
707 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
708 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
711 v
.add_decl
("void sig_handler(int signo)\{")
712 v
.add_decl
("PRINT_ERROR(\"Caught signal
: %s\\n\
", strsignal(signo));")
713 v
.add_decl
("show_backtrace(signo);")
716 v
.add_decl
("void show_backtrace (int signo) \{")
717 if ost
== "nitstack" or ost
== "libunwind" then
718 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
719 v
.add_decl
("unw_cursor_t cursor;")
720 v
.add_decl
("if(opt==NULL)\{")
721 v
.add_decl
("unw_context_t uc;")
722 v
.add_decl
("unw_word_t ip;")
723 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
724 v
.add_decl
("unw_getcontext(&uc);")
725 v
.add_decl
("unw_init_local(&cursor, &uc);")
726 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
727 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
728 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
729 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
730 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
731 if ost
== "nitstack" then
732 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
733 v
.add_decl
(" if (recv != NULL)\{")
734 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
735 v.add_decl(" \}else\{")
736 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
739 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
742 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
743 v.add_decl("free(procname);")
746 v.add_decl("exit(signo);")
750 v.add_decl("int nit_main(int argc, char** argv) \{")
752 v.add_decl("int main(int argc, char** argv) \{")
755 v.add("signal(SIGABRT, sig_handler);")
756 v.add("signal(SIGFPE, sig_handler);")
757 v.add("signal(SIGILL, sig_handler);")
758 v.add("signal(SIGINT, sig_handler);")
759 v.add("signal(SIGTERM, sig_handler);")
760 v.add("signal(SIGSEGV, sig_handler);")
761 v.add("signal(SIGPIPE, sig_handler);")
763 v.add("glob_argc = argc; glob_argv = argv;")
764 v.add("initialize_gc_option();")
766 v.add "initialize_nitni_global_refs();"
768 var main_type = mainmodule.sys_type
769 if main_type != null then
770 var mainmodule = v.compiler.mainmodule
771 var glob_sys = v.init_instance(main_type)
772 v.add("glob_sys = {glob_sys};")
773 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
774 if main_init != null then
775 v.send(main_init, [glob_sys])
777 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
778 mainmodule.try_get_primitive_method("main", main_type.mclass)
779 if main_method != null then
780 v.send(main_method, [glob_sys])
784 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
785 v.add_decl("long count_type_test_resolved_total = 0;")
786 v.add_decl("long count_type_test_unresolved_total = 0;")
787 v.add_decl("long count_type_test_skipped_total = 0;")
788 v.add_decl("long count_type_test_total_total = 0;")
789 for tag in count_type_test_tags do
790 v.add_decl("long count_type_test_total_{tag};")
791 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
792 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
793 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
794 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
795 v.add("count_type_test_total_total += count_type_test_total_{tag};")
797 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
798 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
799 var tags = count_type_test_tags.to_a
802 v.add("printf(\"{tag}\");")
803 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
804 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
805 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
806 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
810 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
811 v.add_decl("long count_invoke_total;")
812 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
813 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
814 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
815 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
816 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
819 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
820 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
821 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
828 # Copile all C functions related to the [incr|decr]_ref features of the FFI
829 fun compile_nitni_global_ref_functions
831 var v = self.new_visitor
833 struct nitni_global_ref_list_t *nitni_global_ref_list;
834 void initialize_nitni_global_refs() {
835 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
836 nitni_global_ref_list->head = NULL;
837 nitni_global_ref_list->tail = NULL;
840 void nitni_global_ref_add( struct nitni_ref *ref ) {
841 if ( nitni_global_ref_list->head == NULL ) {
842 nitni_global_ref_list->head = ref;
845 nitni_global_ref_list->tail->next = ref;
846 ref->prev = nitni_global_ref_list->tail;
848 nitni_global_ref_list->tail = ref;
853 void nitni_global_ref_remove( struct nitni_ref *ref ) {
854 if ( ref->prev == NULL ) {
855 nitni_global_ref_list->head = ref->next;
857 ref->prev->next = ref->next;
860 if ( ref->next == NULL ) {
861 nitni_global_ref_list->tail = ref->prev;
863 ref->next->prev = ref->prev;
867 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
868 if ( ref->count == 0 ) /* not registered */
871 nitni_global_ref_add( ref );
877 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
878 if ( ref->count == 1 ) /* was last reference */
880 /* remove from list */
881 nitni_global_ref_remove( ref );
889 # List of additional files required to compile (FFI)
890 var extern_bodies = new Array[ExternFile]
892 # List of source files to copy over to the compile dir
893 var files_to_copy = new Array[String]
895 # This is used to avoid adding an extern file more than once
896 private var seen_extern = new ArraySet[String]
898 # Generate code that initialize the attributes on a new instance
899 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
901 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
902 self.mainmodule.linearize_mclassdefs(cds)
904 if not self.modelbuilder.mclassdef2nclassdef.has_key(cd) then continue
905 var n = self.modelbuilder.mclassdef2nclassdef[cd]
906 for npropdef in n.n_propdefs do
907 if npropdef isa AAttrPropdef then
908 npropdef.init_expr(v, recv)
914 # Generate code that check if an attribute is correctly initialized
915 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
917 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
918 self.mainmodule.linearize_mclassdefs(cds)
920 if not self.modelbuilder.mclassdef2nclassdef.has_key(cd) then continue
921 var n = self.modelbuilder.mclassdef2nclassdef[cd]
922 for npropdef in n.n_propdefs do
923 if npropdef isa AAttrPropdef then
924 npropdef.check_expr(v, recv)
932 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
933 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
934 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
935 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
937 protected fun init_count_type_test_tags: HashMap[String, Int]
939 var res = new HashMap[String, Int]
940 for tag in count_type_test_tags do
946 # Display stats about compilation process
950 # * type tests against resolved types (`x
isa Collection[Animal]`)
951 # * type tests against unresolved types (`x
isa Collection[E
]`)
952 # * type tests skipped
956 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
957 print "# static count_type_test"
958 print "\tresolved:\tunresolved\tskipped\ttotal"
959 var count_type_test_total = init_count_type_test_tags
960 count_type_test_resolved["total"] = 0
961 count_type_test_unresolved["total"] = 0
962 count_type_test_skipped["total"] = 0
963 count_type_test_total["total"] = 0
964 for tag in count_type_test_tags do
965 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
966 count_type_test_resolved["total"] += count_type_test_resolved[tag]
967 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
968 count_type_test_skipped["total"] += count_type_test_skipped[tag]
969 count_type_test_total["total"] += count_type_test_total[tag]
971 var count_type_test = count_type_test_total["total"]
972 var tags = count_type_test_tags.to_a
976 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
977 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
978 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
979 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
985 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
988 # Avoid division by zero by returning the string "n/a"
989 fun div(a,b:Int):String
991 if b == 0 then return "n/a"
992 return ((a*10000/b).to_f / 100.0).to_precision(2)
996 # A file unit (may be more than one file if
997 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1000 var writers = new Array[CodeWriter]
1001 var required_declarations = new HashSet[String]
1004 # Where to store generated lines
1007 var lines: List[String] = new List[String]
1008 var decl_lines: List[String] = new List[String]
1010 # Add a line in the main part of the generated C
1011 fun add(s: String) do self.lines.add(s)
1014 # (used for local or global declaration)
1015 fun add_decl(s: String) do self.decl_lines.add(s)
1017 init(file: CodeFile)
1020 file.writers.add(self)
1024 # A visitor on the AST of property definition that generate the C code.
1025 abstract class AbstractCompilerVisitor
1027 type COMPILER: AbstractCompiler
1029 # The associated compiler
1030 var compiler: COMPILER
1032 # The current visited AST node
1033 var current_node: nullable ANode = null is writable
1035 # The current `Frame`
1036 var frame: nullable Frame is writable
1038 # Alias for self.compiler.mainmodule.object_type
1039 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1041 # Alias for self.compiler.mainmodule.bool_type
1042 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1044 var writer: CodeWriter
1046 init(compiler: COMPILER)
1048 self.compiler = compiler
1049 self.writer = new CodeWriter(compiler.files.last)
1052 # Force to get the primitive class named `name
` or abort
1053 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
1055 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1056 fun get_property(name: String, recv: MType): MMethod
1058 assert recv isa MClassType
1059 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1062 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1064 var initializers = callsite.mpropdef.initializers
1065 if not initializers.is_empty then
1066 var recv = arguments.first
1069 for p in initializers do
1070 if p isa MMethod then
1072 for x in p.intro.msignature.mparameters do
1073 args.add arguments[i]
1077 else if p isa MAttribute then
1078 self.write_attribute(p, recv, arguments[i])
1082 assert i == arguments.length
1084 return self.send(callsite.mproperty, [recv])
1087 return self.send(callsite.mproperty, arguments)
1090 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1092 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1094 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1096 # Transform varargs, in raw arguments, into a single argument of type `Array`
1097 # Note: this method modify the given `args
`
1098 # If there is no vararg, then `args
` is not modified.
1099 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
1101 var recv = args.first
1102 var vararg_rank = msignature.vararg_rank
1103 if vararg_rank >= 0 then
1104 assert args.length >= msignature.arity + 1 # because of self
1106 args = new Array[RuntimeVariable]
1108 args.add(rawargs.first) # recv
1110 for i in [0..vararg_rank[ do
1111 args.add(rawargs[i+1])
1114 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
1115 var vararg = new Array[RuntimeVariable]
1116 for i in [vararg_rank..vararg_lastrank] do
1117 vararg.add(rawargs[i+1])
1120 var elttype = msignature.mparameters[vararg_rank].mtype
1121 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
1123 for i in [vararg_lastrank+1..rawargs.length-1[ do
1124 args.add(rawargs[i+1])
1127 rawargs.add_all(args)
1133 # Anchor a type to the main module and the current receiver
1134 fun anchor(mtype: MType): MType
1136 if not mtype.need_anchor then return mtype
1137 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1140 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1142 if not mtype.need_anchor then return mtype
1143 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1146 # Unsafely cast a value to a new type
1147 # ie the result share the same C variable but my have a different mcasttype
1148 # NOTE: if the adaptation is useless then `value
` is returned as it.
1149 # ENSURE: `result
.name
== value
.name
`
1150 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1152 mtype = self.anchor(mtype)
1153 var valmtype = value.mcasttype
1154 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1158 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1159 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1162 var res = new RuntimeVariable(value.name, valmtype, mtype)
1167 # Generate a super call from a method definition
1168 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1170 # Adapt the arguments of a method according to targetted `MMethodDef`
1171 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1173 # Unbox all the arguments of a method when implemented `extern` or `intern`
1174 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1176 # Box or unbox a value to another type iff a C type conversion is needed
1177 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1178 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1180 # Box extern classes to be used in the generated code
1181 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1183 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1184 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1186 # Generate a polymorphic subtype test
1187 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1189 # Generate the code required to dynamically check if 2 objects share the same runtime type
1190 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1192 # Generate a Nit "is" for two runtime_variables
1193 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1197 # Generate a static call on a method definition
1198 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1200 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1201 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1203 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1204 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1206 assert t isa MClassType
1207 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1208 return self.call(propdef, t, args)
1211 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1212 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1214 assert t isa MClassType
1215 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1216 return self.call(m, t, args)
1219 # Attributes handling
1221 # Generate a polymorphic attribute is_set test
1222 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1224 # Generate a polymorphic attribute read
1225 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1227 # Generate a polymorphic attribute write
1228 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1232 # Add a check and an abort for a null reciever if needed
1233 fun check_recv_notnull(recv: RuntimeVariable)
1235 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1237 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1239 self.add("if (unlikely({recv} == NULL)) \{")
1240 self.add_abort("Receiver is null")
1247 private var names: HashSet[String] = new HashSet[String]
1248 private var last: Int = 0
1250 # Return a new name based on `s
` and unique in the visitor
1251 fun get_name(s: String): String
1253 if not self.names.has(s) then
1257 var i = self.last + 1
1260 if not self.names.has(s2) then
1269 # Return an unique and stable identifier associated with an escapemark
1270 fun escapemark_name(e: nullable EscapeMark): String
1273 if escapemark_names.has_key(e) then return escapemark_names[e]
1275 if name == null then name = "label"
1276 name = get_name(name)
1277 escapemark_names[e] = name
1281 private var escapemark_names = new HashMap[EscapeMark, String]
1283 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1284 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1285 fun class_name_string(value: RuntimeVariable): String is abstract
1287 # Variables handling
1289 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
1291 # Return the local runtime_variable associated to a Nit local variable
1292 fun variable(variable: Variable): RuntimeVariable
1294 if self.variables.has_key(variable) then
1295 return self.variables[variable]
1297 var name = self.get_name("var_{variable.name}")
1298 var mtype = variable.declared_type.as(not null)
1299 mtype = self.anchor(mtype)
1300 var res = new RuntimeVariable(name, mtype, mtype)
1301 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1302 self.variables[variable] = res
1307 # Return a new uninitialized local runtime_variable
1308 fun new_var(mtype: MType): RuntimeVariable
1310 mtype = self.anchor(mtype)
1311 var name = self.get_name("var")
1312 var res = new RuntimeVariable(name, mtype, mtype)
1313 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1317 # The difference with `new_var
` is the C static type of the local variable
1318 fun new_var_extern(mtype: MType): RuntimeVariable
1320 mtype = self.anchor(mtype)
1321 var name = self.get_name("var")
1322 var res = new RuntimeVariable(name, mtype, mtype)
1323 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1327 # Return a new uninitialized named runtime_variable
1328 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1330 mtype = self.anchor(mtype)
1331 var res = new RuntimeVariable(name, mtype, mtype)
1332 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1336 # Correctly assign a left and a right value
1337 # Boxing and unboxing is performed if required
1338 fun assign(left, right: RuntimeVariable)
1340 right = self.autobox(right, left.mtype)
1341 self.add("{left} = {right};")
1344 # Generate instances
1346 # Generate a alloc-instance + init-attributes
1347 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1349 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1350 fun set_finalizer(recv: RuntimeVariable)
1352 var mtype = recv.mtype
1353 var finalizable_type = compiler.mainmodule.finalizable_type
1354 if finalizable_type != null and not mtype.need_anchor and
1355 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1356 add "gc_register_finalizer({recv});"
1360 # Generate an integer value
1361 fun int_instance(value: Int): RuntimeVariable
1363 var res = self.new_var(self.get_class("Int").mclass_type)
1364 self.add("{res} = {value};")
1368 # Generate an integer value
1369 fun bool_instance(value: Bool): RuntimeVariable
1371 var res = self.new_var(self.get_class("Bool").mclass_type)
1373 self.add("{res} = 1;")
1375 self.add("{res} = 0;")
1380 # Generate a string value
1381 fun string_instance(string: String): RuntimeVariable
1383 var mtype = self.get_class("String").mclass_type
1384 var name = self.get_name("varonce")
1385 self.add_decl("static {mtype.ctype} {name};")
1386 var res = self.new_var(mtype)
1387 self.add("if ({name}) \{")
1388 self.add("{res} = {name};")
1389 self.add("\} else \{")
1390 var native_mtype = self.get_class("NativeString").mclass_type
1391 var nat = self.new_var(native_mtype)
1392 self.add("{nat} = \"{string.escape_to_c}\";")
1393 var length = self.int_instance(string.length)
1394 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1395 self.add("{name} = {res};")
1400 # Generate an array value
1401 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1403 # Get an instance of a array for a vararg
1404 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1408 # Add a line in the main part of the generated C
1409 fun add(s: String) do self.writer.lines.add(s)
1412 # (used for local or global declaration)
1413 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1415 # Request the presence of a global declaration
1416 fun require_declaration(key: String)
1418 var reqs = self.writer.file.required_declarations
1419 if reqs.has(key) then return
1421 var node = current_node
1422 if node != null then compiler.requirers_of_declarations[key] = node
1425 # Add a declaration in the local-header
1426 # The declaration is ensured to be present once
1427 fun declare_once(s: String)
1429 self.compiler.provide_declaration(s, s)
1430 self.require_declaration(s)
1433 # look for a needed .h and .c file for a given .nit source-file
1434 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1435 fun add_extern(file: String)
1437 file = file.strip_extension(".nit")
1438 var tryfile = file + ".nit.h"
1439 if tryfile.file_exists then
1440 self.declare_once("#include \"{tryfile.basename("")}\"")
1441 self.compiler.files_to_copy.add(tryfile)
1443 tryfile = file + "_nit.h"
1444 if tryfile.file_exists then
1445 self.declare_once("#include \"{tryfile.basename("")}\"")
1446 self.compiler.files_to_copy.add(tryfile)
1449 if self.compiler.seen_extern.has(file) then return
1450 self.compiler.seen_extern.add(file)
1451 tryfile = file + ".nit.c"
1452 if not tryfile.file_exists then
1453 tryfile = file + "_nit.c"
1454 if not tryfile.file_exists then return
1456 var f = new ExternCFile(tryfile.basename(""), "")
1457 self.compiler.extern_bodies.add(f)
1458 self.compiler.files_to_copy.add(tryfile)
1461 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1462 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1464 var res = new_var(mtype)
1465 self.add("{res} = {cexpr};")
1469 # Generate generic abort
1470 # used by aborts, asserts, casts, etc.
1471 fun add_abort(message: String)
1473 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1479 if self.current_node != null and self.current_node.location.file != null then
1480 self.add("PRINT_ERROR(\" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1482 self.add("PRINT_ERROR(\"\\n\");")
1484 self.add("show_backtrace(1);")
1487 # Add a dynamic cast
1488 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1490 var res = self.type_test(value, mtype, tag)
1491 self.add("if (unlikely(!{res})) \{")
1492 var cn = self.class_name_string(value)
1493 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1498 # Generate a return with the value `s
`
1499 fun ret(s: RuntimeVariable)
1501 self.assign(self.frame.returnvar.as(not null), s)
1502 self.add("goto {self.frame.returnlabel.as(not null)};")
1505 # Compile a statement (if any)
1506 fun stmt(nexpr: nullable AExpr)
1508 if nexpr == null then return
1509 var old = self.current_node
1510 self.current_node = nexpr
1512 self.current_node = old
1515 # Compile an expression an return its result
1516 # `mtype
` is the expected return type, pass null if no specific type is expected.
1517 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1519 var old = self.current_node
1520 self.current_node = nexpr
1521 var res = nexpr.expr(self).as(not null)
1522 if mtype != null then
1523 mtype = self.anchor(mtype)
1524 res = self.autobox(res, mtype)
1526 res = autoadapt(res, nexpr.mtype.as(not null))
1527 var implicit_cast_to = nexpr.implicit_cast_to
1528 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1529 add_cast(res, implicit_cast_to, "auto")
1530 res = autoadapt(res, implicit_cast_to)
1532 self.current_node = old
1536 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1537 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1539 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1540 fun debug(message: String)
1542 var node = self.current_node
1543 if node == null then
1544 print "?: {message}"
1548 self.add("/* DEBUG: {message} */")
1552 # A C function associated to a Nit method
1553 # Because of customization, a given Nit method can be compiler more that once
1554 abstract class AbstractRuntimeFunction
1556 type COMPILER: AbstractCompiler
1557 type VISITOR: AbstractCompilerVisitor
1559 # The associated Nit method
1560 var mmethoddef: MMethodDef
1562 # The mangled c name of the runtime_function
1563 # Subclasses should redefine `build_c_name
` instead
1566 var res = self.c_name_cache
1567 if res != null then return res
1568 res = self.build_c_name
1569 self.c_name_cache = res
1573 # Non cached version of `c_name
`
1574 protected fun build_c_name: String is abstract
1576 protected var c_name_cache: nullable String = null is writable
1578 # Implements a call of the runtime_function
1579 # May inline the body or generate a C function call
1580 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1582 # Generate the code for the `AbstractRuntimeFunction`
1583 # Warning: compile more than once compilation makes CC unhappy
1584 fun compile_to_c(compiler: COMPILER) is abstract
1587 # A runtime variable hold a runtime value in C.
1588 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1590 # 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.
1591 class RuntimeVariable
1592 # The name of the variable in the C code
1595 # The static type of the variable (as declard in C)
1598 # The current casted type of the variable (as known in Nit)
1599 var mcasttype: MType is writable
1601 # If the variable exaclty a mcasttype?
1602 # false (usual value) means that the variable is a mcasttype or a subtype.
1603 var is_exact: Bool = false is writable
1605 init(name: String, mtype: MType, mcasttype: MType)
1609 self.mcasttype = mcasttype
1610 assert not mtype.need_anchor
1611 assert not mcasttype.need_anchor
1614 redef fun to_s do return name
1619 if self.is_exact then
1620 exact_str = " exact"
1625 if self.mtype == self.mcasttype then
1626 type_str = "{mtype}{exact_str}"
1628 type_str = "{mtype}({mcasttype}{exact_str})"
1630 return "<{name}:{type_str}>"
1634 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1637 type VISITOR: AbstractCompilerVisitor
1639 # The associated visitor
1640 var visitor: VISITOR
1642 # The executed property.
1643 # A Method in case of a call, an attribute in case of a default initialization.
1644 var mpropdef: MPropDef
1646 # The static type of the receiver
1647 var receiver: MClassType
1649 # Arguments of the method (the first is the receiver)
1650 var arguments: Array[RuntimeVariable]
1652 # The runtime_variable associated to the return (in a function)
1653 var returnvar: nullable RuntimeVariable = null is writable
1655 # The label at the end of the property
1656 var returnlabel: nullable String = null is writable
1660 # Return the C type associated to a given Nit static type
1661 fun ctype: String do return "val*"
1663 # C type outside of the compiler code and in boxes
1664 fun ctype_extern: String do return "val*"
1666 # Short name of the `ctype
` to use in unions
1667 fun ctypename: String do return "val"
1669 # Return the name of the C structure associated to a Nit live type
1670 fun c_name: String is abstract
1671 protected var c_name_cache: nullable String is protected writable
1674 redef class MClassType
1677 var res = self.c_name_cache
1678 if res != null then return res
1679 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1680 self.c_name_cache = res
1684 redef fun ctype: String
1686 if mclass.name == "Int" then
1688 else if mclass.name == "Bool" then
1690 else if mclass.name == "Char" then
1692 else if mclass.name == "Float" then
1694 else if mclass.name == "NativeString" then
1696 else if mclass.name == "NativeArray" then
1703 redef fun ctype_extern: String
1705 if mclass.kind == extern_kind then
1712 redef fun ctypename: String
1714 if mclass.name == "Int" then
1716 else if mclass.name == "Bool" then
1718 else if mclass.name == "Char" then
1720 else if mclass.name == "Float" then
1722 else if mclass.name == "NativeString" then
1724 else if mclass.name == "NativeArray" then
1725 #return "{self.arguments.first.ctype}*"
1733 redef class MGenericType
1736 var res = self.c_name_cache
1737 if res != null then return res
1739 for t in self.arguments do
1740 res = res + t.c_name
1742 self.c_name_cache = res
1747 redef class MParameterType
1750 var res = self.c_name_cache
1751 if res != null then return res
1752 res = "{self.mclass.c_name}_FT{self.rank}"
1753 self.c_name_cache = res
1758 redef class MVirtualType
1761 var res = self.c_name_cache
1762 if res != null then return res
1763 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1764 self.c_name_cache = res
1769 redef class MNullableType
1772 var res = self.c_name_cache
1773 if res != null then return res
1774 res = "nullable_{self.mtype.c_name}"
1775 self.c_name_cache = res
1781 # Return the name of the C structure associated to a Nit class
1782 fun c_name: String do
1783 var res = self.c_name_cache
1784 if res != null then return res
1785 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1786 self.c_name_cache = res
1789 private var c_name_cache: nullable String
1792 redef class MProperty
1793 fun c_name: String do
1794 var res = self.c_name_cache
1795 if res != null then return res
1796 res = "{self.intro.c_name}"
1797 self.c_name_cache = res
1800 private var c_name_cache: nullable String
1803 redef class MPropDef
1804 type VISITOR: AbstractCompilerVisitor
1806 private var c_name_cache: nullable String
1808 # The mangled name associated to the property
1811 var res = self.c_name_cache
1812 if res != null then return res
1813 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1814 self.c_name_cache = res
1819 redef class MMethodDef
1820 # Can the body be inlined?
1821 fun can_inline(v: VISITOR): Bool
1823 if is_abstract then return true
1824 var modelbuilder = v.compiler.modelbuilder
1825 if modelbuilder.mpropdef2npropdef.has_key(self) then
1826 var npropdef = modelbuilder.mpropdef2npropdef[self]
1827 return npropdef.can_inline
1828 else if self.mproperty.name == "init" then
1829 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1836 # Inline the body in another visitor
1837 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1839 var modelbuilder = v.compiler.modelbuilder
1840 if modelbuilder.mpropdef2npropdef.has_key(self) then
1841 var npropdef = modelbuilder.mpropdef2npropdef[self]
1842 var oldnode = v.current_node
1843 v.current_node = npropdef
1844 self.compile_parameter_check(v, arguments)
1845 npropdef.compile_to_c(v, self, arguments)
1846 v.current_node = oldnode
1847 else if self.mproperty.name == "init" then
1848 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1849 var oldnode = v.current_node
1850 v.current_node = nclassdef
1851 self.compile_parameter_check(v, arguments)
1852 nclassdef.compile_to_c(v, self, arguments)
1853 v.current_node = oldnode
1860 # Generate type checks in the C code to check covariant parameters
1861 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1863 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1865 for i in [0..msignature.arity[ do
1866 # skip test for vararg since the array is instantiated with the correct polymorphic type
1867 if msignature.vararg_rank == i then continue
1869 # skip if the cast is not required
1870 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1871 if not origmtype.need_anchor then continue
1873 # get the parameter type
1874 var mtype = self.msignature.mparameters[i].mtype
1877 # note that v decides if and how to implements the cast
1878 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1879 v.add_cast(arguments[i+1], mtype, "covariance")
1886 redef class APropdef
1887 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1889 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1890 debug("Not yet implemented")
1893 fun can_inline: Bool do return true
1896 redef class AMethPropdef
1897 redef fun compile_to_c(v, mpropdef, arguments)
1899 if mpropdef.is_abstract then
1900 var cn = v.class_name_string(arguments.first)
1901 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1906 # Call the implicit super-init
1907 var auto_super_inits = self.auto_super_inits
1908 if auto_super_inits != null then
1909 var args = [arguments.first]
1910 for auto_super_init in auto_super_inits do
1911 assert auto_super_init.mproperty != mpropdef.mproperty
1913 for i in [0..auto_super_init.msignature.arity+1[ do
1914 args.add(arguments[i])
1916 assert auto_super_init.mproperty != mpropdef.mproperty
1917 v.compile_callsite(auto_super_init, args)
1920 if auto_super_call then
1921 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1924 # Try special compilation
1925 if mpropdef.is_intern then
1926 if compile_intern_to_c(v, mpropdef, arguments) then return
1927 else if mpropdef.is_extern then
1928 if mpropdef.mproperty.is_init then
1929 if compile_externinit_to_c(v, mpropdef, arguments) then return
1931 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1935 # Compile block if any
1936 var n_block = n_block
1937 if n_block != null then
1938 for i in [0..mpropdef.msignature.arity[ do
1939 var variable = self.n_signature.n_params[i].variable.as(not null)
1940 v.assign(v.variable(variable), arguments[i+1])
1947 var cn = v.class_name_string(arguments.first)
1948 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1952 redef fun can_inline
1954 if self.auto_super_inits != null then return false
1955 var nblock = self.n_block
1956 if nblock == null then return true
1957 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1958 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1962 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
1964 var pname = mpropdef.mproperty.name
1965 var cname = mpropdef.mclassdef.mclass.name
1966 var ret = mpropdef.msignature.return_mtype
1968 ret = v.resolve_for(ret, arguments.first)
1969 else if mpropdef.mproperty.is_new then
1970 ret = arguments.first.mcasttype
1972 if pname != "==" and pname != "!=" then
1973 v.adapt_signature(mpropdef, arguments)
1974 v.unbox_signature_extern(mpropdef, arguments)
1976 if cname == "Int" then
1977 if pname == "output" then
1978 v.add("printf(\"%ld\\n\", {arguments.first});")
1980 else if pname == "object_id" then
1981 v.ret(arguments.first)
1983 else if pname == "+" then
1984 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1986 else if pname == "-" then
1987 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1989 else if pname == "unary -" then
1990 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1992 else if pname == "*" then
1993 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1995 else if pname == "/" then
1996 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1998 else if pname == "%" then
1999 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2001 else if pname == "lshift" then
2002 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2004 else if pname == "rshift" then
2005 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2007 else if pname == "==" then
2008 v.ret(v.equal_test(arguments[0], arguments[1]))
2010 else if pname == "!=" then
2011 var res = v.equal_test(arguments[0], arguments[1])
2012 v.ret(v.new_expr("!{res}", ret.as(not null)))
2014 else if pname == "<" then
2015 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2017 else if pname == ">" then
2018 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2020 else if pname == "<=" then
2021 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2023 else if pname == ">=" then
2024 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2026 else if pname == "to_f" then
2027 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2029 else if pname == "ascii" then
2030 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2033 else if cname == "Char" then
2034 if pname == "output" then
2035 v.add("printf(\"%c\", {arguments.first});")
2037 else if pname == "object_id" then
2038 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2040 else if pname == "successor" then
2041 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2043 else if pname == "predecessor" then
2044 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2046 else if pname == "==" then
2047 v.ret(v.equal_test(arguments[0], arguments[1]))
2049 else if pname == "!=" then
2050 var res = v.equal_test(arguments[0], arguments[1])
2051 v.ret(v.new_expr("!{res}", ret.as(not null)))
2053 else if pname == "<" then
2054 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2056 else if pname == ">" then
2057 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2059 else if pname == "<=" then
2060 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2062 else if pname == ">=" then
2063 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2065 else if pname == "to_i" then
2066 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2068 else if pname == "ascii" then
2069 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2072 else if cname == "Bool" then
2073 if pname == "output" then
2074 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2076 else if pname == "object_id" then
2077 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2079 else if pname == "==" then
2080 v.ret(v.equal_test(arguments[0], arguments[1]))
2082 else if pname == "!=" then
2083 var res = v.equal_test(arguments[0], arguments[1])
2084 v.ret(v.new_expr("!{res}", ret.as(not null)))
2087 else if cname == "Float" then
2088 if pname == "output" then
2089 v.add("printf(\"%f\\n\", {arguments.first});")
2091 else if pname == "object_id" then
2092 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2094 else if pname == "+" then
2095 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2097 else if pname == "-" then
2098 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2100 else if pname == "unary -" then
2101 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2103 else if pname == "succ" then
2104 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2106 else if pname == "prec" then
2107 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2109 else if pname == "*" then
2110 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2112 else if pname == "/" then
2113 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2115 else if pname == "==" then
2116 v.ret(v.equal_test(arguments[0], arguments[1]))
2118 else if pname == "!=" then
2119 var res = v.equal_test(arguments[0], arguments[1])
2120 v.ret(v.new_expr("!{res}", ret.as(not null)))
2122 else if pname == "<" then
2123 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2125 else if pname == ">" then
2126 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2128 else if pname == "<=" then
2129 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2131 else if pname == ">=" then
2132 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2134 else if pname == "to_i" then
2135 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2138 else if cname == "NativeString" then
2139 if pname == "[]" then
2140 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2142 else if pname == "[]=" then
2143 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2145 else if pname == "copy_to" then
2146 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2148 else if pname == "atoi" then
2149 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2151 else if pname == "init" then
2152 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2155 else if cname == "NativeArray" then
2156 v.native_array_def(pname, ret, arguments)
2159 if pname == "exit" then
2160 v.add("exit({arguments[1]});")
2162 else if pname == "sys" then
2163 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2165 else if pname == "calloc_string" then
2166 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2168 else if pname == "calloc_array" then
2169 v.calloc_array(ret.as(not null), arguments)
2171 else if pname == "object_id" then
2172 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2174 else if pname == "is_same_type" then
2175 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2177 else if pname == "is_same_instance" then
2178 v.ret(v.equal_test(arguments[0], arguments[1]))
2180 else if pname == "output_class_name" then
2181 var nat = v.class_name_string(arguments.first)
2182 v.add("printf(\"%s\\n\", {nat});")
2184 else if pname == "native_class_name" then
2185 var nat = v.class_name_string(arguments.first)
2186 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2188 else if pname == "force_garbage_collection" then
2189 v.add("nit_gcollect();")
2191 else if pname == "native_argc" then
2192 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2194 else if pname == "native_argv" then
2195 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2201 # Compile an extern method
2202 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2203 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2206 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2208 externname = at.arg_as_string(v.compiler.modelbuilder)
2209 if externname == null then return false
2213 if location.file != null then
2214 var file = location.file.filename
2217 var res: nullable RuntimeVariable = null
2218 var ret = mpropdef.msignature.return_mtype
2220 ret = v.resolve_for(ret, arguments.first)
2221 res = v.new_var_extern(ret)
2223 v.adapt_signature(mpropdef, arguments)
2224 v.unbox_signature_extern(mpropdef, arguments)
2227 v.add("{externname}({arguments.join(", ")});")
2229 v.add("{res} = {externname}({arguments.join(", ")});")
2230 res = v.box_extern(res, ret.as(not null))
2236 # Compile an extern factory
2237 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2238 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2241 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2243 externname = at.arg_as_string(v.compiler.modelbuilder)
2244 if externname == null then return false
2248 if location.file != null then
2249 var file = location.file.filename
2252 v.adapt_signature(mpropdef, arguments)
2253 v.unbox_signature_extern(mpropdef, arguments)
2254 var ret = arguments.first.mtype
2255 var res = v.new_var_extern(ret)
2259 v.add("{res} = {externname}({arguments.join(", ")});")
2260 res = v.box_extern(res, ret)
2266 redef class AAttrPropdef
2267 redef fun compile_to_c(v, mpropdef, arguments)
2269 if mpropdef == mreadpropdef then
2270 assert arguments.length == 1
2274 assert nexpr != null
2276 var ret = self.mpropdef.static_mtype
2277 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2278 var guard = self.mlazypropdef.mproperty
2280 set = v.isset_attribute(self.mpropdef.mproperty, arguments.first)
2282 set = v.read_attribute(guard, arguments.first)
2284 v.add("if(likely({set})) \{")
2285 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2287 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2288 v.write_attribute(self.mpropdef.mproperty, arguments.first, value)
2289 v.assign(res, value)
2291 var true_v = v.new_expr("1", v.bool_type)
2292 v.write_attribute(guard, arguments.first, true_v)
2296 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2298 v.assign(v.frame.returnvar.as(not null), res)
2299 else if mpropdef == mwritepropdef then
2300 assert arguments.length == 2
2301 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2303 var ret = self.mpropdef.static_mtype
2304 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2306 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.new_expr("1", v.bool_type))
2314 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2316 var nexpr = self.n_expr
2317 if nexpr != null and not is_lazy then
2318 var oldnode = v.current_node
2319 v.current_node = self
2320 var old_frame = v.frame
2321 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2323 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2324 v.write_attribute(self.mpropdef.mproperty, recv, value)
2326 v.current_node = oldnode
2330 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2332 var nexpr = self.n_expr
2333 if nexpr != null then return
2335 var oldnode = v.current_node
2336 v.current_node = self
2337 var old_frame = v.frame
2338 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2340 # Force read to check the initialization
2341 v.read_attribute(self.mpropdef.mproperty, recv)
2343 v.current_node = oldnode
2347 redef class AClassdef
2348 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2350 if mpropdef == self.mfree_init then
2351 assert mpropdef.mproperty.is_root_init
2352 assert arguments.length == 1
2353 if not mpropdef.is_intro then
2354 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2364 # Try to compile self as an expression
2365 # Do not call this method directly, use `v
.expr
` instead
2366 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2368 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2369 var mtype = self.mtype
2370 if mtype == null then
2373 var res = v.new_var(mtype)
2374 v.add("/* {res} = NOT YET {class_name} */")
2379 # Try to compile self as a statement
2380 # Do not call this method directly, use `v
.stmt
` instead
2381 private fun stmt(v: AbstractCompilerVisitor)
2384 if res != null then v.add("{res};")
2388 redef class ABlockExpr
2391 for e in self.n_expr do v.stmt(e)
2395 var last = self.n_expr.last
2396 for e in self.n_expr do
2397 if e == last then break
2400 return v.expr(last, null)
2404 redef class AVardeclExpr
2407 var variable = self.variable.as(not null)
2408 var ne = self.n_expr
2410 var i = v.expr(ne, variable.declared_type)
2411 v.assign(v.variable(variable), i)
2416 redef class AVarExpr
2419 var res = v.variable(self.variable.as(not null))
2420 var mtype = self.mtype.as(not null)
2421 return v.autoadapt(res, mtype)
2425 redef class AVarAssignExpr
2428 var variable = self.variable.as(not null)
2429 var i = v.expr(self.n_value, variable.declared_type)
2430 v.assign(v.variable(variable), i)
2434 var variable = self.variable.as(not null)
2435 var i = v.expr(self.n_value, variable.declared_type)
2436 v.assign(v.variable(variable), i)
2441 redef class AVarReassignExpr
2444 var variable = self.variable.as(not null)
2445 var vari = v.variable(variable)
2446 var value = v.expr(self.n_value, variable.declared_type)
2447 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2449 v.assign(v.variable(variable), res)
2453 redef class ASelfExpr
2454 redef fun expr(v) do return v.frame.arguments.first
2457 redef class AContinueExpr
2458 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2461 redef class ABreakExpr
2462 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2465 redef class AReturnExpr
2468 var nexpr = self.n_expr
2469 if nexpr != null then
2470 var returnvar = v.frame.returnvar.as(not null)
2471 var i = v.expr(nexpr, returnvar.mtype)
2472 v.assign(returnvar, i)
2474 v.add("goto {v.frame.returnlabel.as(not null)};")
2478 redef class AAbortExpr
2479 redef fun stmt(v) do v.add_abort("Aborted")
2485 var cond = v.expr_bool(self.n_expr)
2486 v.add("if ({cond})\{")
2495 var res = v.new_var(self.mtype.as(not null))
2496 var cond = v.expr_bool(self.n_expr)
2497 v.add("if ({cond})\{")
2498 v.assign(res, v.expr(self.n_then.as(not null), null))
2500 v.assign(res, v.expr(self.n_else.as(not null), null))
2506 redef class AIfexprExpr
2509 var res = v.new_var(self.mtype.as(not null))
2510 var cond = v.expr_bool(self.n_expr)
2511 v.add("if ({cond})\{")
2512 v.assign(res, v.expr(self.n_then, null))
2514 v.assign(res, v.expr(self.n_else, null))
2523 v.stmt(self.n_block)
2524 var escapemark = self.escapemark
2525 if escapemark != null then
2526 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2531 redef class AWhileExpr
2535 var cond = v.expr_bool(self.n_expr)
2536 v.add("if (!{cond}) break;")
2537 v.stmt(self.n_block)
2538 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2540 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2544 redef class ALoopExpr
2548 v.stmt(self.n_block)
2549 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2551 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2555 redef class AForExpr
2558 # Shortcut on explicit range
2559 # Avoid the instantiation of the range and the iterator
2560 var nexpr = self.n_expr
2561 if self.variables.length == 1 and nexpr isa ARangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2562 var from = v.expr(nexpr.n_expr, null)
2563 var to = v.expr(nexpr.n_expr2, null)
2564 var variable = v.variable(variables.first)
2565 var one = v.new_expr("1", v.get_class("Int").mclass_type)
2567 v.assign(variable, from)
2568 v.add("for(;;) \{ /* shortcut range */")
2571 if nexpr isa AOrangeExpr then
2572 ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2574 ok = v.send(v.get_property("<=", variable.mtype), [variable, to])
2577 v.add("if(!{ok}) break;")
2579 v.stmt(self.n_block)
2581 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2582 var succ = v.send(v.get_property("successor", variable.mtype), [variable, one])
2584 v.assign(variable, succ)
2586 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2590 var cl = v.expr(self.n_expr, null)
2591 var it_meth = self.method_iterator
2592 assert it_meth != null
2593 var it = v.compile_callsite(it_meth, [cl])
2596 var isok_meth = self.method_is_ok
2597 assert isok_meth != null
2598 var ok = v.compile_callsite(isok_meth, [it])
2600 v.add("if(!{ok}) break;")
2601 if self.variables.length == 1 then
2602 var item_meth = self.method_item
2603 assert item_meth != null
2604 var i = v.compile_callsite(item_meth, [it])
2606 v.assign(v.variable(variables.first), i)
2607 else if self.variables.length == 2 then
2608 var key_meth = self.method_key
2609 assert key_meth != null
2610 var i = v.compile_callsite(key_meth, [it])
2612 v.assign(v.variable(variables[0]), i)
2613 var item_meth = self.method_item
2614 assert item_meth != null
2615 i = v.compile_callsite(item_meth, [it])
2617 v.assign(v.variable(variables[1]), i)
2621 v.stmt(self.n_block)
2622 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2623 var next_meth = self.method_next
2624 assert next_meth != null
2625 v.compile_callsite(next_meth, [it])
2627 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2631 redef class AAssertExpr
2634 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2636 var cond = v.expr_bool(self.n_expr)
2637 v.add("if (unlikely(!{cond})) \{")
2641 v.add_abort("Assert '{nid.text}' failed")
2643 v.add_abort("Assert failed")
2652 var res = v.new_var(self.mtype.as(not null))
2653 var i1 = v.expr_bool(self.n_expr)
2654 v.add("if ({i1}) \{")
2657 var i2 = v.expr_bool(self.n_expr2)
2658 v.add("{res} = {i2};")
2664 redef class AImpliesExpr
2667 var res = v.new_var(self.mtype.as(not null))
2668 var i1 = v.expr_bool(self.n_expr)
2669 v.add("if (!{i1}) \{")
2672 var i2 = v.expr_bool(self.n_expr2)
2673 v.add("{res} = {i2};")
2679 redef class AAndExpr
2682 var res = v.new_var(self.mtype.as(not null))
2683 var i1 = v.expr_bool(self.n_expr)
2684 v.add("if (!{i1}) \{")
2687 var i2 = v.expr_bool(self.n_expr2)
2688 v.add("{res} = {i2};")
2694 redef class ANotExpr
2697 var cond = v.expr_bool(self.n_expr)
2698 return v.new_expr("!{cond}", self.mtype.as(not null))
2702 redef class AOrElseExpr
2705 var res = v.new_var(self.mtype.as(not null))
2706 var i1 = v.expr(self.n_expr, null)
2707 v.add("if ({i1}!=NULL) \{")
2710 var i2 = v.expr(self.n_expr2, null)
2717 redef class AIntExpr
2718 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2721 redef class AFloatExpr
2722 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2725 redef class ACharExpr
2726 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2729 redef class AArrayExpr
2732 var mtype = self.mtype.as(MClassType).arguments.first
2733 var array = new Array[RuntimeVariable]
2734 for nexpr in self.n_exprs.n_exprs do
2735 var i = v.expr(nexpr, mtype)
2738 return v.array_instance(array, mtype)
2742 redef class AStringFormExpr
2743 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2746 redef class ASuperstringExpr
2749 var array = new Array[RuntimeVariable]
2750 for ne in self.n_exprs do
2751 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2752 var i = v.expr(ne, null)
2755 var a = v.array_instance(array, v.object_type)
2756 var res = v.send(v.get_property("to_s", a.mtype), [a])
2761 redef class ACrangeExpr
2764 var i1 = v.expr(self.n_expr, null)
2765 var i2 = v.expr(self.n_expr2, null)
2766 var mtype = self.mtype.as(MClassType)
2767 var res = v.init_instance(mtype)
2768 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2773 redef class AOrangeExpr
2776 var i1 = v.expr(self.n_expr, null)
2777 var i2 = v.expr(self.n_expr2, null)
2778 var mtype = self.mtype.as(MClassType)
2779 var res = v.init_instance(mtype)
2780 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2785 redef class ATrueExpr
2786 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2789 redef class AFalseExpr
2790 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2793 redef class ANullExpr
2794 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2797 redef class AIsaExpr
2800 var i = v.expr(self.n_expr, null)
2801 return v.type_test(i, self.cast_type.as(not null), "isa")
2805 redef class AAsCastExpr
2808 var i = v.expr(self.n_expr, null)
2809 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2811 v.add_cast(i, self.mtype.as(not null), "as")
2816 redef class AAsNotnullExpr
2819 var i = v.expr(self.n_expr, null)
2820 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2822 if i.mtype.ctype != "val*" then return i
2824 v.add("if (unlikely({i} == NULL)) \{")
2825 v.add_abort("Cast failed")
2831 redef class AParExpr
2832 redef fun expr(v) do return v.expr(self.n_expr, null)
2835 redef class AOnceExpr
2838 var mtype = self.mtype.as(not null)
2839 var name = v.get_name("varonce")
2840 var guard = v.get_name(name + "_guard")
2841 v.add_decl("static {mtype.ctype} {name};")
2842 v.add_decl("static int {guard};")
2843 var res = v.new_var(mtype)
2844 v.add("if ({guard}) \{")
2845 v.add("{res} = {name};")
2847 var i = v.expr(self.n_expr, mtype)
2848 v.add("{res} = {i};")
2849 v.add("{name} = {res};")
2850 v.add("{guard} = 1;")
2856 redef class ASendExpr
2859 var recv = v.expr(self.n_expr, null)
2861 for a in self.raw_arguments do
2862 args.add(v.expr(a, null))
2864 return v.compile_callsite(self.callsite.as(not null), args)
2868 redef class ASendReassignFormExpr
2871 var recv = v.expr(self.n_expr, null)
2873 for a in self.raw_arguments do
2874 args.add(v.expr(a, null))
2876 var value = v.expr(self.n_value, null)
2878 var left = v.compile_callsite(self.callsite.as(not null), args)
2881 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2885 v.compile_callsite(self.write_callsite.as(not null), args)
2889 redef class ASuperExpr
2892 var recv = v.frame.arguments.first
2894 for a in self.n_args.n_exprs do
2895 args.add(v.expr(a, null))
2898 var callsite = self.callsite
2899 if callsite != null then
2900 # Add additionnals arguments for the super init call
2901 if args.length == 1 then
2902 for i in [0..callsite.msignature.arity[ do
2903 args.add(v.frame.arguments[i+1])
2907 var res = v.compile_callsite(callsite, args)
2911 if args.length == 1 then
2912 args = v.frame.arguments
2915 # stantard call-next-method
2916 return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
2920 redef class ANewExpr
2923 var mtype = self.mtype.as(MClassType)
2925 var ctype = mtype.ctype
2926 if mtype.mclass.name == "NativeArray" then
2927 assert self.n_args.n_exprs.length == 1
2928 var l = v.expr(self.n_args.n_exprs.first, null)
2929 assert mtype isa MGenericType
2930 var elttype = mtype.arguments.first
2931 return v.native_array_instance(elttype, l)
2932 else if ctype == "val*" then
2933 recv = v.init_instance(mtype)
2934 else if ctype == "char*" then
2935 recv = v.new_expr("NULL/*special!*/", mtype)
2937 recv = v.new_expr("({ctype})0/*special!*/", mtype)
2940 for a in self.n_args.n_exprs do
2941 args.add(v.expr(a, null))
2943 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2944 if res2 != null then
2945 #self.debug("got {res2} from {mproperty}. drop {recv}")
2952 redef class AAttrExpr
2955 var recv = v.expr(self.n_expr, null)
2956 var mproperty = self.mproperty.as(not null)
2957 return v.read_attribute(mproperty, recv)
2961 redef class AAttrAssignExpr
2964 var recv = v.expr(self.n_expr, null)
2965 var i = v.expr(self.n_value, null)
2966 var mproperty = self.mproperty.as(not null)
2967 v.write_attribute(mproperty, recv, i)
2971 redef class AAttrReassignExpr
2974 var recv = v.expr(self.n_expr, null)
2975 var value = v.expr(self.n_value, null)
2976 var mproperty = self.mproperty.as(not null)
2977 var attr = v.read_attribute(mproperty, recv)
2978 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2980 v.write_attribute(mproperty, recv, res)
2984 redef class AIssetAttrExpr
2987 var recv = v.expr(self.n_expr, null)
2988 var mproperty = self.mproperty.as(not null)
2989 return v.isset_attribute(mproperty, recv)
2993 redef class ADebugTypeExpr
3002 redef class Array[E]
3003 # Return a new `Array` with the elements only contened in self and not in `o
`
3004 fun -(o: Array[E]): Array[E] do
3005 var res = new Array[E]
3006 for e in self do if not o.has(e) then res.add(e)
3012 # All `MProperty` associated to all `MClassDef` of `mclass
`
3013 fun properties(mclass: MClass): Set[MProperty] do
3014 if not self.properties_cache.has_key(mclass) then
3015 var properties = new HashSet[MProperty]
3016 var parents = new Array[MClass]
3017 if self.flatten_mclass_hierarchy.has(mclass) then
3018 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3020 for parent in parents do
3021 properties.add_all(self.properties(parent))
3023 for mclassdef in mclass.mclassdefs do
3024 if not self.in_importation <= mclassdef.mmodule then continue
3025 for mprop in mclassdef.intro_mproperties do
3026 properties.add(mprop)
3029 self.properties_cache[mclass] = properties
3031 return properties_cache[mclass]
3033 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3035 # Write FFI and nitni results to file
3036 fun finalize_ffi(c: AbstractCompiler) do end
3038 # Give requided addinional system libraries (as given to LD_LIBS)
3039 # Note: can return null instead of an empty set
3040 fun collect_linker_libs: nullable Set[String] do return null
3043 # Create a tool context to handle options and paths
3044 var toolcontext = new ToolContext
3046 toolcontext.tooldescription = "Usage: nitg [OPTION]... file.nit...\nCompiles Nit programs."
3048 # We do not add other options, so process them now!
3049 toolcontext.process_options(args)
3051 # We need a model to collect stufs
3052 var model = new Model
3053 # An a model builder to parse files
3054 var modelbuilder = new ModelBuilder(model, toolcontext)
3056 var arguments = toolcontext.option_context.rest
3057 if arguments.length > 1 and toolcontext.opt_output.value != null then
3058 print "Error: --output needs a single source file. Do you prefer --dir?"
3062 # Here we load an process all modules passed on the command line
3063 var mmodules = modelbuilder.parse(arguments)
3065 if mmodules.is_empty then return
3066 modelbuilder.run_phases
3068 for mmodule in mmodules do
3069 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3071 toolcontext.run_global_phases(ms)