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
315 # Search a non fictive module
316 var res
= mainmodule
.name
317 while mainmodule
.is_fictive
do
318 mainmodule
= mainmodule
.in_importation
.direct_greaters
.first
319 res
= mainmodule
.name
324 # Combine options and platform informations to get the final path of the outfile
325 fun outfile
(mainmodule
: MModule): String
327 var res
= self.toolcontext
.opt_output
.value
328 if res
!= null then return res
329 res
= default_outname
(mainmodule
)
330 var dir
= self.toolcontext
.opt_dir
.value
331 if dir
!= null then return dir
.join_path
(res
)
335 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
337 var mainmodule
= compiler
.mainmodule
338 var platform
= compiler
.mainmodule
.target_platform
340 var outname
= outfile
(mainmodule
)
342 var orig_dir
= compile_dir
.relpath
(".")
343 var outpath
= orig_dir
.join_path
(outname
).simplify_path
344 var makename
= makefile_name
(mainmodule
)
345 var makepath
= "{compile_dir}/{makename}"
346 var makefile
= new OFStream.open
(makepath
)
350 cc_includes
+= " -I \"" + p + "\
""
353 var linker_options
= new HashSet[String]
354 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
355 for m
in mainmodule
.in_importation
.greaters
do
356 var libs
= m
.collect_linker_libs
357 if libs
!= null then linker_options
.add_all
(libs
)
360 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")
362 var ost
= toolcontext
.opt_stacktrace
.value
363 if (ost
== "libunwind" or ost
== "nitstack") and (platform
== null or platform
.supports_libunwind
) then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
365 # Dynamic adaptations
366 # While `platform` enable complex toolchains, they are statically applied
367 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
369 # Check and adapt the targeted system
370 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
371 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
372 # remove -lunwind since it is already included on macosx
373 makefile
.write
("\tNEED_LIBUNWIND :=\n")
374 makefile
.write
("endif\n\n")
376 # Check and adapt for the compiler used
377 # clang need an additionnal `-Qunused-arguments`
378 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
380 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
382 makefile
.write
("all: {outpath}\n\n")
384 var ofiles
= new Array[String]
385 var dep_rules
= new Array[String]
386 # Compile each generated file
388 var o
= f
.strip_extension
(".c") + ".o"
389 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
394 var java_files
= new Array[ExternFile]
396 # Compile each required extern body into a specific .o
397 for f
in compiler
.extern_bodies
do
398 var o
= f
.makefile_rule_name
399 var ff
= f
.filename
.basename
("")
400 makefile
.write
("{o}: {ff}\n")
401 makefile
.write
("\t{f.makefile_rule_content}\n\n")
402 dep_rules
.add
(f
.makefile_rule_name
)
404 if f
.compiles_to_o_file
then ofiles
.add
(o
)
405 if f
.add_to_jar
then java_files
.add
(f
)
408 if not java_files
.is_empty
then
409 var jar_file
= "{outpath}.jar"
411 var class_files_array
= new Array[String]
412 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
413 var class_files
= class_files_array
.join
(" ")
415 makefile
.write
("{jar_file}: {class_files}\n")
416 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
417 dep_rules
.add jar_file
421 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
423 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
425 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
428 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
430 var makename
= makefile_name
(compiler
.mainmodule
)
432 var makeflags
= self.toolcontext
.opt_make_flags
.value
433 if makeflags
== null then makeflags
= ""
434 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
437 if self.toolcontext
.verbose_level
>= 3 then
438 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
440 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
443 toolcontext
.error
(null, "make failed! Error code: {res}.")
448 # Singleton that store the knowledge about the compilation process
449 abstract class AbstractCompiler
450 type VISITOR: AbstractCompilerVisitor
452 # Table corresponding c_names to nit names (methods)
453 var names
= new HashMap[String, String]
455 # The main module of the program currently compiled
456 # Is assigned during the separate compilation
457 var mainmodule
: MModule is writable
459 # The real main module of the program
460 var realmainmodule
: MModule
462 # The modeulbuilder used to know the model and the AST
463 var modelbuilder
: ModelBuilder is protected writable
465 # Is hardening asked? (see --hardening)
466 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
468 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
470 self.mainmodule
= mainmodule
471 self.realmainmodule
= mainmodule
472 self.modelbuilder
= modelbuilder
475 # Force the creation of a new file
476 # The point is to avoid contamination between must-be-compiled-separately files
477 fun new_file
(name
: String): CodeFile
479 var f
= new CodeFile(name
)
484 # The list of all associated files
485 # Used to generate .c files
486 var files
: List[CodeFile] = new List[CodeFile]
488 # Initialize a visitor specific for a compiler engine
489 fun new_visitor
: VISITOR is abstract
491 # Where global declaration are stored (the main .h)
492 var header
: CodeWriter is writable
494 # Provide a declaration that can be requested (before or latter) by a visitor
495 fun provide_declaration
(key
: String, s
: String)
497 if self.provided_declarations
.has_key
(key
) then
498 assert self.provided_declarations
[key
] == s
500 self.provided_declarations
[key
] = s
503 private var provided_declarations
= new HashMap[String, String]
505 private var requirers_of_declarations
= new HashMap[String, ANode]
507 # Builds the .c and .h files to be used when generating a Stack Trace
508 # Binds the generated C function names to Nit function names
509 fun build_c_to_nit_bindings
511 var compile_dir
= modelbuilder
.compile_dir
513 var stream
= new OFStream.open
("{compile_dir}/c_functions_hash.c")
514 stream
.write
("#include <string.h>\n")
515 stream
.write
("#include <stdlib.h>\n")
516 stream
.write
("#include \"c_functions_hash
.h\
"\n")
517 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
518 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
519 stream
.write
("char* procname = malloc(len+1);")
520 stream
.write
("memcpy(procname, procproc, len);")
521 stream
.write
("procname[len] = '\\0';")
522 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
523 for i
in names
.keys
do
526 stream.write("\
",\"")
527 stream.write(names[i])
528 stream.write("\
"\},\n")
530 stream
.write
("\};\n")
531 stream
.write
("int i;")
532 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
533 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
534 stream
.write
("free(procname);")
535 stream
.write
("return map[i].nit_name;")
538 stream
.write
("free(procname);")
539 stream
.write
("return NULL;")
543 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
544 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
547 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
551 # This method call compile_header_strucs method that has to be refined
552 fun compile_header
do
554 var toolctx
= modelbuilder
.toolcontext
555 self.header
.add_decl
("#include <stdlib.h>")
556 self.header
.add_decl
("#include <stdio.h>")
557 self.header
.add_decl
("#include <string.h>")
558 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
559 self.header
.add_decl
("#ifdef ANDROID")
560 self.header
.add_decl
(" #include <android/log.h>")
561 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
562 self.header
.add_decl
("#else")
563 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
564 self.header
.add_decl
("#endif")
566 compile_header_structs
567 compile_nitni_structs
569 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
570 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
571 # Signal handler function prototype
572 self.header
.add_decl
("void show_backtrace(int);")
574 self.header
.add_decl
("void show_backtrace(int) __attribute__ ((noreturn));")
577 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
578 self.header
.add_decl
("#define likely(x) (x)")
579 self.header
.add_decl
("#define unlikely(x) (x)")
580 else if gccd_disable
.has
("correct-likely") then
581 # invert the `likely` definition
582 # Used by masochists to bench the worst case
583 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
584 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
586 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
587 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
590 # Global variable used by intern methods
591 self.header
.add_decl
("extern int glob_argc;")
592 self.header
.add_decl
("extern char **glob_argv;")
593 self.header
.add_decl
("extern val *glob_sys;")
596 # Declaration of structures for live Nit types
597 protected fun compile_header_structs
is abstract
599 # Declaration of structures for nitni undelying the FFI
600 protected fun compile_nitni_structs
602 self.header
.add_decl
"""
603 /* Native reference to Nit objects */
604 /* This structure is used to represent every Nit type in extern methods and custom C code. */
606 struct nitni_ref *next,
607 *prev; /* adjacent global references in global list */
608 int count; /* number of time this global reference has been marked */
611 /* List of global references from C code to Nit objects */
612 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
613 struct nitni_global_ref_list_t {
614 struct nitni_ref *head, *tail;
616 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
618 /* Initializer of global reference list */
619 extern void nitni_global_ref_list_init();
621 /* Intern function to add a global reference to the list */
622 extern void nitni_global_ref_add( struct nitni_ref *ref );
624 /* Intern function to remove a global reference from the list */
625 extern void nitni_global_ref_remove( struct nitni_ref *ref );
627 /* Increase count on an existing global reference */
628 extern void nitni_global_ref_incr( struct nitni_ref *ref );
630 /* Decrease count on an existing global reference */
631 extern void nitni_global_ref_decr( struct nitni_ref *ref );
635 fun compile_finalizer_function
637 var finalizable_type
= mainmodule
.finalizable_type
638 if finalizable_type
== null then return
640 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
642 if finalize_meth
== null then
643 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
647 var v
= self.new_visitor
648 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
649 var recv
= v
.new_expr
("obj", finalizable_type
)
650 v
.send
(finalize_meth
, [recv
])
654 # Generate the main C function.
658 # * allocate the Sys object if it exists
659 # * call init if is exists
660 # * call main if it exists
661 fun compile_main_function
663 var v
= self.new_visitor
664 v
.add_decl
("#include <signal.h>")
665 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
666 var platform
= mainmodule
.target_platform
668 if platform
!= null and not platform
.supports_libunwind
then ost
= "none"
670 var no_main
= (platform
!= null and platform
.no_main
) or modelbuilder
.toolcontext
.opt_no_main
.value
672 if ost
== "nitstack" or ost
== "libunwind" then
673 v
.add_decl
("#define UNW_LOCAL_ONLY")
674 v
.add_decl
("#include <libunwind.h>")
675 if ost
== "nitstack" then
676 v
.add_decl
("#include \"c_functions_hash
.h\
"")
679 v
.add_decl
("int glob_argc;")
680 v
.add_decl
("char **glob_argv;")
681 v
.add_decl
("val *glob_sys;")
683 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
684 for tag
in count_type_test_tags
do
685 v
.add_decl
("long count_type_test_resolved_{tag};")
686 v
.add_decl
("long count_type_test_unresolved_{tag};")
687 v
.add_decl
("long count_type_test_skipped_{tag};")
688 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
689 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
690 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
694 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
695 v
.add_decl
("long count_invoke_by_tables;")
696 v
.add_decl
("long count_invoke_by_direct;")
697 v
.add_decl
("long count_invoke_by_inline;")
698 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
699 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
700 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
703 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
704 v
.add_decl
("long count_attr_reads = 0;")
705 v
.add_decl
("long count_isset_checks = 0;")
706 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
707 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
710 v
.add_decl
("void sig_handler(int signo)\{")
711 v
.add_decl
("PRINT_ERROR(\"Caught signal
: %s\\n\
", strsignal(signo));")
712 v
.add_decl
("show_backtrace(signo);")
715 v
.add_decl
("void show_backtrace (int signo) \{")
716 if ost
== "nitstack" or ost
== "libunwind" then
717 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
718 v
.add_decl
("unw_cursor_t cursor;")
719 v
.add_decl
("if(opt==NULL)\{")
720 v
.add_decl
("unw_context_t uc;")
721 v
.add_decl
("unw_word_t ip;")
722 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
723 v
.add_decl
("unw_getcontext(&uc);")
724 v
.add_decl
("unw_init_local(&cursor, &uc);")
725 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
726 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
727 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
728 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
729 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
730 if ost
== "nitstack" then
731 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
732 v
.add_decl
(" if (recv != NULL)\{")
733 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
734 v.add_decl(" \}else\{")
735 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
738 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
741 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
742 v.add_decl("free(procname);")
745 v.add_decl("exit(signo);")
749 v.add_decl("int nit_main(int argc, char** argv) \{")
751 v.add_decl("int main(int argc, char** argv) \{")
754 v.add("signal(SIGABRT, sig_handler);")
755 v.add("signal(SIGFPE, sig_handler);")
756 v.add("signal(SIGILL, sig_handler);")
757 v.add("signal(SIGINT, sig_handler);")
758 v.add("signal(SIGTERM, sig_handler);")
759 v.add("signal(SIGSEGV, sig_handler);")
760 v.add("signal(SIGPIPE, sig_handler);")
762 v.add("glob_argc = argc; glob_argv = argv;")
763 v.add("initialize_gc_option();")
765 v.add "initialize_nitni_global_refs();"
767 var main_type = mainmodule.sys_type
768 if main_type != null then
769 var mainmodule = v.compiler.mainmodule
770 var glob_sys = v.init_instance(main_type)
771 v.add("glob_sys = {glob_sys};")
772 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
773 if main_init != null then
774 v.send(main_init, [glob_sys])
776 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
777 mainmodule.try_get_primitive_method("main", main_type.mclass)
778 if main_method != null then
779 v.send(main_method, [glob_sys])
783 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
784 v.add_decl("long count_type_test_resolved_total = 0;")
785 v.add_decl("long count_type_test_unresolved_total = 0;")
786 v.add_decl("long count_type_test_skipped_total = 0;")
787 v.add_decl("long count_type_test_total_total = 0;")
788 for tag in count_type_test_tags do
789 v.add_decl("long count_type_test_total_{tag};")
790 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
791 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
792 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
793 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
794 v.add("count_type_test_total_total += count_type_test_total_{tag};")
796 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
797 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
798 var tags = count_type_test_tags.to_a
801 v.add("printf(\"{tag}\");")
802 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
803 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
804 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
805 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
809 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
810 v.add_decl("long count_invoke_total;")
811 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
812 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
813 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
814 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
815 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
818 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
819 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
820 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
827 # Copile all C functions related to the [incr|decr]_ref features of the FFI
828 fun compile_nitni_global_ref_functions
830 var v = self.new_visitor
832 struct nitni_global_ref_list_t *nitni_global_ref_list;
833 void initialize_nitni_global_refs() {
834 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
835 nitni_global_ref_list->head = NULL;
836 nitni_global_ref_list->tail = NULL;
839 void nitni_global_ref_add( struct nitni_ref *ref ) {
840 if ( nitni_global_ref_list->head == NULL ) {
841 nitni_global_ref_list->head = ref;
844 nitni_global_ref_list->tail->next = ref;
845 ref->prev = nitni_global_ref_list->tail;
847 nitni_global_ref_list->tail = ref;
852 void nitni_global_ref_remove( struct nitni_ref *ref ) {
853 if ( ref->prev == NULL ) {
854 nitni_global_ref_list->head = ref->next;
856 ref->prev->next = ref->next;
859 if ( ref->next == NULL ) {
860 nitni_global_ref_list->tail = ref->prev;
862 ref->next->prev = ref->prev;
866 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
867 if ( ref->count == 0 ) /* not registered */
870 nitni_global_ref_add( ref );
876 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
877 if ( ref->count == 1 ) /* was last reference */
879 /* remove from list */
880 nitni_global_ref_remove( ref );
888 # List of additional files required to compile (FFI)
889 var extern_bodies = new Array[ExternFile]
891 # List of source files to copy over to the compile dir
892 var files_to_copy = new Array[String]
894 # This is used to avoid adding an extern file more than once
895 private var seen_extern = new ArraySet[String]
897 # Generate code that initialize the attributes on a new instance
898 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
900 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
901 self.mainmodule.linearize_mclassdefs(cds)
903 if not self.modelbuilder.mclassdef2nclassdef.has_key(cd) then continue
904 var n = self.modelbuilder.mclassdef2nclassdef[cd]
905 for npropdef in n.n_propdefs do
906 if npropdef isa AAttrPropdef then
907 npropdef.init_expr(v, recv)
913 # Generate code that check if an attribute is correctly initialized
914 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
916 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
917 self.mainmodule.linearize_mclassdefs(cds)
919 if not self.modelbuilder.mclassdef2nclassdef.has_key(cd) then continue
920 var n = self.modelbuilder.mclassdef2nclassdef[cd]
921 for npropdef in n.n_propdefs do
922 if npropdef isa AAttrPropdef then
923 npropdef.check_expr(v, recv)
931 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
932 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
933 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
934 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
936 protected fun init_count_type_test_tags: HashMap[String, Int]
938 var res = new HashMap[String, Int]
939 for tag in count_type_test_tags do
945 # Display stats about compilation process
949 # * type tests against resolved types (`x
isa Collection[Animal]`)
950 # * type tests against unresolved types (`x
isa Collection[E
]`)
951 # * type tests skipped
955 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
956 print "# static count_type_test"
957 print "\tresolved:\tunresolved\tskipped\ttotal"
958 var count_type_test_total = init_count_type_test_tags
959 count_type_test_resolved["total"] = 0
960 count_type_test_unresolved["total"] = 0
961 count_type_test_skipped["total"] = 0
962 count_type_test_total["total"] = 0
963 for tag in count_type_test_tags do
964 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
965 count_type_test_resolved["total"] += count_type_test_resolved[tag]
966 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
967 count_type_test_skipped["total"] += count_type_test_skipped[tag]
968 count_type_test_total["total"] += count_type_test_total[tag]
970 var count_type_test = count_type_test_total["total"]
971 var tags = count_type_test_tags.to_a
975 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
976 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
977 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
978 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
984 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
987 # Avoid division by zero by returning the string "n/a"
988 fun div(a,b:Int):String
990 if b == 0 then return "n/a"
991 return ((a*10000/b).to_f / 100.0).to_precision(2)
995 # A file unit (may be more than one file if
996 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
999 var writers = new Array[CodeWriter]
1000 var required_declarations = new HashSet[String]
1003 # Where to store generated lines
1006 var lines: List[String] = new List[String]
1007 var decl_lines: List[String] = new List[String]
1009 # Add a line in the main part of the generated C
1010 fun add(s: String) do self.lines.add(s)
1013 # (used for local or global declaration)
1014 fun add_decl(s: String) do self.decl_lines.add(s)
1016 init(file: CodeFile)
1019 file.writers.add(self)
1023 # A visitor on the AST of property definition that generate the C code.
1024 abstract class AbstractCompilerVisitor
1026 type COMPILER: AbstractCompiler
1028 # The associated compiler
1029 var compiler: COMPILER
1031 # The current visited AST node
1032 var current_node: nullable ANode = null is writable
1034 # The current `Frame`
1035 var frame: nullable Frame is writable
1037 # Alias for self.compiler.mainmodule.object_type
1038 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1040 # Alias for self.compiler.mainmodule.bool_type
1041 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1043 var writer: CodeWriter
1045 init(compiler: COMPILER)
1047 self.compiler = compiler
1048 self.writer = new CodeWriter(compiler.files.last)
1051 # Force to get the primitive class named `name
` or abort
1052 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
1054 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1055 fun get_property(name: String, recv: MType): MMethod
1057 assert recv isa MClassType
1058 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1061 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1063 var initializers = callsite.mpropdef.initializers
1064 if not initializers.is_empty then
1065 var recv = arguments.first
1068 for p in initializers do
1069 if p isa MMethod then
1071 for x in p.intro.msignature.mparameters do
1072 args.add arguments[i]
1076 else if p isa MAttribute then
1077 self.write_attribute(p, recv, arguments[i])
1081 assert i == arguments.length
1083 return self.send(callsite.mproperty, [recv])
1086 return self.send(callsite.mproperty, arguments)
1089 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1091 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1093 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1095 # Transform varargs, in raw arguments, into a single argument of type `Array`
1096 # Note: this method modify the given `args
`
1097 # If there is no vararg, then `args
` is not modified.
1098 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
1100 var recv = args.first
1101 var vararg_rank = msignature.vararg_rank
1102 if vararg_rank >= 0 then
1103 assert args.length >= msignature.arity + 1 # because of self
1105 args = new Array[RuntimeVariable]
1107 args.add(rawargs.first) # recv
1109 for i in [0..vararg_rank[ do
1110 args.add(rawargs[i+1])
1113 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
1114 var vararg = new Array[RuntimeVariable]
1115 for i in [vararg_rank..vararg_lastrank] do
1116 vararg.add(rawargs[i+1])
1119 var elttype = msignature.mparameters[vararg_rank].mtype
1120 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
1122 for i in [vararg_lastrank+1..rawargs.length-1[ do
1123 args.add(rawargs[i+1])
1126 rawargs.add_all(args)
1132 # Anchor a type to the main module and the current receiver
1133 fun anchor(mtype: MType): MType
1135 if not mtype.need_anchor then return mtype
1136 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1139 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1141 if not mtype.need_anchor then return mtype
1142 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1145 # Unsafely cast a value to a new type
1146 # ie the result share the same C variable but my have a different mcasttype
1147 # NOTE: if the adaptation is useless then `value
` is returned as it.
1148 # ENSURE: `result
.name
== value
.name
`
1149 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1151 mtype = self.anchor(mtype)
1152 var valmtype = value.mcasttype
1153 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1157 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1158 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1161 var res = new RuntimeVariable(value.name, valmtype, mtype)
1166 # Generate a super call from a method definition
1167 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1169 # Adapt the arguments of a method according to targetted `MMethodDef`
1170 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1172 # Unbox all the arguments of a method when implemented `extern` or `intern`
1173 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1175 # Box or unbox a value to another type iff a C type conversion is needed
1176 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1177 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1179 # Box extern classes to be used in the generated code
1180 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1182 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1183 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1185 # Generate a polymorphic subtype test
1186 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1188 # Generate the code required to dynamically check if 2 objects share the same runtime type
1189 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1191 # Generate a Nit "is" for two runtime_variables
1192 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1196 # Generate a static call on a method definition
1197 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1199 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1200 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1202 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1203 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1205 assert t isa MClassType
1206 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1207 return self.call(propdef, t, args)
1210 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1211 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1213 assert t isa MClassType
1214 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1215 return self.call(m, t, args)
1218 # Attributes handling
1220 # Generate a polymorphic attribute is_set test
1221 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1223 # Generate a polymorphic attribute read
1224 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1226 # Generate a polymorphic attribute write
1227 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1231 # Add a check and an abort for a null reciever if needed
1232 fun check_recv_notnull(recv: RuntimeVariable)
1234 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1236 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1238 self.add("if (unlikely({recv} == NULL)) \{")
1239 self.add_abort("Receiver is null")
1246 private var names: HashSet[String] = new HashSet[String]
1247 private var last: Int = 0
1249 # Return a new name based on `s
` and unique in the visitor
1250 fun get_name(s: String): String
1252 if not self.names.has(s) then
1256 var i = self.last + 1
1259 if not self.names.has(s2) then
1268 # Return an unique and stable identifier associated with an escapemark
1269 fun escapemark_name(e: nullable EscapeMark): String
1272 if escapemark_names.has_key(e) then return escapemark_names[e]
1274 if name == null then name = "label"
1275 name = get_name(name)
1276 escapemark_names[e] = name
1280 private var escapemark_names = new HashMap[EscapeMark, String]
1282 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1283 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1284 fun class_name_string(value: RuntimeVariable): String is abstract
1286 # Variables handling
1288 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
1290 # Return the local runtime_variable associated to a Nit local variable
1291 fun variable(variable: Variable): RuntimeVariable
1293 if self.variables.has_key(variable) then
1294 return self.variables[variable]
1296 var name = self.get_name("var_{variable.name}")
1297 var mtype = variable.declared_type.as(not null)
1298 mtype = self.anchor(mtype)
1299 var res = new RuntimeVariable(name, mtype, mtype)
1300 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1301 self.variables[variable] = res
1306 # Return a new uninitialized local runtime_variable
1307 fun new_var(mtype: MType): RuntimeVariable
1309 mtype = self.anchor(mtype)
1310 var name = self.get_name("var")
1311 var res = new RuntimeVariable(name, mtype, mtype)
1312 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1316 # The difference with `new_var
` is the C static type of the local variable
1317 fun new_var_extern(mtype: MType): RuntimeVariable
1319 mtype = self.anchor(mtype)
1320 var name = self.get_name("var")
1321 var res = new RuntimeVariable(name, mtype, mtype)
1322 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1326 # Return a new uninitialized named runtime_variable
1327 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1329 mtype = self.anchor(mtype)
1330 var res = new RuntimeVariable(name, mtype, mtype)
1331 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1335 # Correctly assign a left and a right value
1336 # Boxing and unboxing is performed if required
1337 fun assign(left, right: RuntimeVariable)
1339 right = self.autobox(right, left.mtype)
1340 self.add("{left} = {right};")
1343 # Generate instances
1345 # Generate a alloc-instance + init-attributes
1346 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1348 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1349 fun set_finalizer(recv: RuntimeVariable)
1351 var mtype = recv.mtype
1352 var finalizable_type = compiler.mainmodule.finalizable_type
1353 if finalizable_type != null and not mtype.need_anchor and
1354 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1355 add "gc_register_finalizer({recv});"
1359 # Generate an integer value
1360 fun int_instance(value: Int): RuntimeVariable
1362 var res = self.new_var(self.get_class("Int").mclass_type)
1363 self.add("{res} = {value};")
1367 # Generate an integer value
1368 fun bool_instance(value: Bool): RuntimeVariable
1370 var res = self.new_var(self.get_class("Bool").mclass_type)
1372 self.add("{res} = 1;")
1374 self.add("{res} = 0;")
1379 # Generate a string value
1380 fun string_instance(string: String): RuntimeVariable
1382 var mtype = self.get_class("String").mclass_type
1383 var name = self.get_name("varonce")
1384 self.add_decl("static {mtype.ctype} {name};")
1385 var res = self.new_var(mtype)
1386 self.add("if ({name}) \{")
1387 self.add("{res} = {name};")
1388 self.add("\} else \{")
1389 var native_mtype = self.get_class("NativeString").mclass_type
1390 var nat = self.new_var(native_mtype)
1391 self.add("{nat} = \"{string.escape_to_c}\";")
1392 var length = self.int_instance(string.length)
1393 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1394 self.add("{name} = {res};")
1399 # Generate an array value
1400 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1402 # Get an instance of a array for a vararg
1403 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1407 # Add a line in the main part of the generated C
1408 fun add(s: String) do self.writer.lines.add(s)
1411 # (used for local or global declaration)
1412 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1414 # Request the presence of a global declaration
1415 fun require_declaration(key: String)
1417 var reqs = self.writer.file.required_declarations
1418 if reqs.has(key) then return
1420 var node = current_node
1421 if node != null then compiler.requirers_of_declarations[key] = node
1424 # Add a declaration in the local-header
1425 # The declaration is ensured to be present once
1426 fun declare_once(s: String)
1428 self.compiler.provide_declaration(s, s)
1429 self.require_declaration(s)
1432 # look for a needed .h and .c file for a given .nit source-file
1433 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1434 fun add_extern(file: String)
1436 file = file.strip_extension(".nit")
1437 var tryfile = file + ".nit.h"
1438 if tryfile.file_exists then
1439 self.declare_once("#include \"{tryfile.basename("")}\"")
1440 self.compiler.files_to_copy.add(tryfile)
1442 tryfile = file + "_nit.h"
1443 if tryfile.file_exists then
1444 self.declare_once("#include \"{tryfile.basename("")}\"")
1445 self.compiler.files_to_copy.add(tryfile)
1448 if self.compiler.seen_extern.has(file) then return
1449 self.compiler.seen_extern.add(file)
1450 tryfile = file + ".nit.c"
1451 if not tryfile.file_exists then
1452 tryfile = file + "_nit.c"
1453 if not tryfile.file_exists then return
1455 var f = new ExternCFile(tryfile.basename(""), "")
1456 self.compiler.extern_bodies.add(f)
1457 self.compiler.files_to_copy.add(tryfile)
1460 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1461 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1463 var res = new_var(mtype)
1464 self.add("{res} = {cexpr};")
1468 # Generate generic abort
1469 # used by aborts, asserts, casts, etc.
1470 fun add_abort(message: String)
1472 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1478 if self.current_node != null and self.current_node.location.file != null then
1479 self.add("PRINT_ERROR(\" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1481 self.add("PRINT_ERROR(\"\\n\");")
1483 self.add("show_backtrace(1);")
1486 # Add a dynamic cast
1487 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1489 var res = self.type_test(value, mtype, tag)
1490 self.add("if (unlikely(!{res})) \{")
1491 var cn = self.class_name_string(value)
1492 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1497 # Generate a return with the value `s
`
1498 fun ret(s: RuntimeVariable)
1500 self.assign(self.frame.returnvar.as(not null), s)
1501 self.add("goto {self.frame.returnlabel.as(not null)};")
1504 # Compile a statement (if any)
1505 fun stmt(nexpr: nullable AExpr)
1507 if nexpr == null then return
1508 var old = self.current_node
1509 self.current_node = nexpr
1511 self.current_node = old
1514 # Compile an expression an return its result
1515 # `mtype
` is the expected return type, pass null if no specific type is expected.
1516 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1518 var old = self.current_node
1519 self.current_node = nexpr
1520 var res = nexpr.expr(self).as(not null)
1521 if mtype != null then
1522 mtype = self.anchor(mtype)
1523 res = self.autobox(res, mtype)
1525 res = autoadapt(res, nexpr.mtype.as(not null))
1526 var implicit_cast_to = nexpr.implicit_cast_to
1527 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1528 add_cast(res, implicit_cast_to, "auto")
1529 res = autoadapt(res, implicit_cast_to)
1531 self.current_node = old
1535 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1536 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1538 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1539 fun debug(message: String)
1541 var node = self.current_node
1542 if node == null then
1543 print "?: {message}"
1547 self.add("/* DEBUG: {message} */")
1551 # A C function associated to a Nit method
1552 # Because of customization, a given Nit method can be compiler more that once
1553 abstract class AbstractRuntimeFunction
1555 type COMPILER: AbstractCompiler
1556 type VISITOR: AbstractCompilerVisitor
1558 # The associated Nit method
1559 var mmethoddef: MMethodDef
1561 # The mangled c name of the runtime_function
1562 # Subclasses should redefine `build_c_name
` instead
1565 var res = self.c_name_cache
1566 if res != null then return res
1567 res = self.build_c_name
1568 self.c_name_cache = res
1572 # Non cached version of `c_name
`
1573 protected fun build_c_name: String is abstract
1575 protected var c_name_cache: nullable String = null is writable
1577 # Implements a call of the runtime_function
1578 # May inline the body or generate a C function call
1579 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1581 # Generate the code for the `AbstractRuntimeFunction`
1582 # Warning: compile more than once compilation makes CC unhappy
1583 fun compile_to_c(compiler: COMPILER) is abstract
1586 # A runtime variable hold a runtime value in C.
1587 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1589 # 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.
1590 class RuntimeVariable
1591 # The name of the variable in the C code
1594 # The static type of the variable (as declard in C)
1597 # The current casted type of the variable (as known in Nit)
1598 var mcasttype: MType is writable
1600 # If the variable exaclty a mcasttype?
1601 # false (usual value) means that the variable is a mcasttype or a subtype.
1602 var is_exact: Bool = false is writable
1604 init(name: String, mtype: MType, mcasttype: MType)
1608 self.mcasttype = mcasttype
1609 assert not mtype.need_anchor
1610 assert not mcasttype.need_anchor
1613 redef fun to_s do return name
1618 if self.is_exact then
1619 exact_str = " exact"
1624 if self.mtype == self.mcasttype then
1625 type_str = "{mtype}{exact_str}"
1627 type_str = "{mtype}({mcasttype}{exact_str})"
1629 return "<{name}:{type_str}>"
1633 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1636 type VISITOR: AbstractCompilerVisitor
1638 # The associated visitor
1639 var visitor: VISITOR
1641 # The executed property.
1642 # A Method in case of a call, an attribute in case of a default initialization.
1643 var mpropdef: MPropDef
1645 # The static type of the receiver
1646 var receiver: MClassType
1648 # Arguments of the method (the first is the receiver)
1649 var arguments: Array[RuntimeVariable]
1651 # The runtime_variable associated to the return (in a function)
1652 var returnvar: nullable RuntimeVariable = null is writable
1654 # The label at the end of the property
1655 var returnlabel: nullable String = null is writable
1659 # Return the C type associated to a given Nit static type
1660 fun ctype: String do return "val*"
1662 # C type outside of the compiler code and in boxes
1663 fun ctype_extern: String do return "val*"
1665 # Short name of the `ctype
` to use in unions
1666 fun ctypename: String do return "val"
1668 # Return the name of the C structure associated to a Nit live type
1669 fun c_name: String is abstract
1670 protected var c_name_cache: nullable String is protected writable
1673 redef class MClassType
1676 var res = self.c_name_cache
1677 if res != null then return res
1678 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1679 self.c_name_cache = res
1683 redef fun ctype: 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
1702 redef fun ctype_extern: String
1704 if mclass.kind == extern_kind then
1711 redef fun ctypename: String
1713 if mclass.name == "Int" then
1715 else if mclass.name == "Bool" then
1717 else if mclass.name == "Char" then
1719 else if mclass.name == "Float" then
1721 else if mclass.name == "NativeString" then
1723 else if mclass.name == "NativeArray" then
1724 #return "{self.arguments.first.ctype}*"
1732 redef class MGenericType
1735 var res = self.c_name_cache
1736 if res != null then return res
1738 for t in self.arguments do
1739 res = res + t.c_name
1741 self.c_name_cache = res
1746 redef class MParameterType
1749 var res = self.c_name_cache
1750 if res != null then return res
1751 res = "{self.mclass.c_name}_FT{self.rank}"
1752 self.c_name_cache = res
1757 redef class MVirtualType
1760 var res = self.c_name_cache
1761 if res != null then return res
1762 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1763 self.c_name_cache = res
1768 redef class MNullableType
1771 var res = self.c_name_cache
1772 if res != null then return res
1773 res = "nullable_{self.mtype.c_name}"
1774 self.c_name_cache = res
1780 # Return the name of the C structure associated to a Nit class
1781 fun c_name: String do
1782 var res = self.c_name_cache
1783 if res != null then return res
1784 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1785 self.c_name_cache = res
1788 private var c_name_cache: nullable String
1791 redef class MProperty
1792 fun c_name: String do
1793 var res = self.c_name_cache
1794 if res != null then return res
1795 res = "{self.intro.c_name}"
1796 self.c_name_cache = res
1799 private var c_name_cache: nullable String
1802 redef class MPropDef
1803 type VISITOR: AbstractCompilerVisitor
1805 private var c_name_cache: nullable String
1807 # The mangled name associated to the property
1810 var res = self.c_name_cache
1811 if res != null then return res
1812 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1813 self.c_name_cache = res
1818 redef class MMethodDef
1819 # Can the body be inlined?
1820 fun can_inline(v: VISITOR): Bool
1822 if is_abstract then return true
1823 var modelbuilder = v.compiler.modelbuilder
1824 if modelbuilder.mpropdef2npropdef.has_key(self) then
1825 var npropdef = modelbuilder.mpropdef2npropdef[self]
1826 return npropdef.can_inline
1827 else if self.mproperty.name == "init" then
1828 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1835 # Inline the body in another visitor
1836 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1838 var modelbuilder = v.compiler.modelbuilder
1839 if modelbuilder.mpropdef2npropdef.has_key(self) then
1840 var npropdef = modelbuilder.mpropdef2npropdef[self]
1841 var oldnode = v.current_node
1842 v.current_node = npropdef
1843 self.compile_parameter_check(v, arguments)
1844 npropdef.compile_to_c(v, self, arguments)
1845 v.current_node = oldnode
1846 else if self.mproperty.name == "init" then
1847 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1848 var oldnode = v.current_node
1849 v.current_node = nclassdef
1850 self.compile_parameter_check(v, arguments)
1851 nclassdef.compile_to_c(v, self, arguments)
1852 v.current_node = oldnode
1859 # Generate type checks in the C code to check covariant parameters
1860 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1862 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1864 for i in [0..msignature.arity[ do
1865 # skip test for vararg since the array is instantiated with the correct polymorphic type
1866 if msignature.vararg_rank == i then continue
1868 # skip if the cast is not required
1869 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1870 if not origmtype.need_anchor then continue
1872 # get the parameter type
1873 var mtype = self.msignature.mparameters[i].mtype
1876 # note that v decides if and how to implements the cast
1877 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1878 v.add_cast(arguments[i+1], mtype, "covariance")
1885 redef class APropdef
1886 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1888 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1889 debug("Not yet implemented")
1892 fun can_inline: Bool do return true
1895 redef class AMethPropdef
1896 redef fun compile_to_c(v, mpropdef, arguments)
1898 if mpropdef.is_abstract then
1899 var cn = v.class_name_string(arguments.first)
1900 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1905 # Call the implicit super-init
1906 var auto_super_inits = self.auto_super_inits
1907 if auto_super_inits != null then
1908 var args = [arguments.first]
1909 for auto_super_init in auto_super_inits do
1910 assert auto_super_init.mproperty != mpropdef.mproperty
1912 for i in [0..auto_super_init.msignature.arity+1[ do
1913 args.add(arguments[i])
1915 assert auto_super_init.mproperty != mpropdef.mproperty
1916 v.compile_callsite(auto_super_init, args)
1919 if auto_super_call then
1920 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1923 # Try special compilation
1924 if mpropdef.is_intern then
1925 if compile_intern_to_c(v, mpropdef, arguments) then return
1926 else if mpropdef.is_extern then
1927 if mpropdef.mproperty.is_init then
1928 if compile_externinit_to_c(v, mpropdef, arguments) then return
1930 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1934 # Compile block if any
1935 var n_block = n_block
1936 if n_block != null then
1937 for i in [0..mpropdef.msignature.arity[ do
1938 var variable = self.n_signature.n_params[i].variable.as(not null)
1939 v.assign(v.variable(variable), arguments[i+1])
1946 var cn = v.class_name_string(arguments.first)
1947 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1951 redef fun can_inline
1953 if self.auto_super_inits != null then return false
1954 var nblock = self.n_block
1955 if nblock == null then return true
1956 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1957 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1961 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
1963 var pname = mpropdef.mproperty.name
1964 var cname = mpropdef.mclassdef.mclass.name
1965 var ret = mpropdef.msignature.return_mtype
1967 ret = v.resolve_for(ret, arguments.first)
1968 else if mpropdef.mproperty.is_new then
1969 ret = arguments.first.mcasttype
1971 if pname != "==" and pname != "!=" then
1972 v.adapt_signature(mpropdef, arguments)
1973 v.unbox_signature_extern(mpropdef, arguments)
1975 if cname == "Int" then
1976 if pname == "output" then
1977 v.add("printf(\"%ld\\n\", {arguments.first});")
1979 else if pname == "object_id" then
1980 v.ret(arguments.first)
1982 else if pname == "+" then
1983 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", 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 == "unary -" then
1989 v.ret(v.new_expr("-{arguments[0]}", 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 == "%" then
1998 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2000 else if pname == "lshift" then
2001 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2003 else if pname == "rshift" then
2004 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2006 else if pname == "==" then
2007 v.ret(v.equal_test(arguments[0], arguments[1]))
2009 else if pname == "!=" then
2010 var res = v.equal_test(arguments[0], arguments[1])
2011 v.ret(v.new_expr("!{res}", ret.as(not null)))
2013 else if pname == "<" then
2014 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2016 else if pname == ">" then
2017 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2019 else if pname == "<=" then
2020 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2022 else if pname == ">=" then
2023 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2025 else if pname == "to_f" then
2026 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2028 else if pname == "ascii" then
2029 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2032 else if cname == "Char" then
2033 if pname == "output" then
2034 v.add("printf(\"%c\", {arguments.first});")
2036 else if pname == "object_id" then
2037 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2039 else if pname == "successor" then
2040 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2042 else if pname == "predecessor" then
2043 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2045 else if pname == "==" then
2046 v.ret(v.equal_test(arguments[0], arguments[1]))
2048 else if pname == "!=" then
2049 var res = v.equal_test(arguments[0], arguments[1])
2050 v.ret(v.new_expr("!{res}", ret.as(not null)))
2052 else if pname == "<" then
2053 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2055 else if pname == ">" then
2056 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2058 else if pname == "<=" then
2059 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2061 else if pname == ">=" then
2062 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2064 else if pname == "to_i" then
2065 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2067 else if pname == "ascii" then
2068 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2071 else if cname == "Bool" then
2072 if pname == "output" then
2073 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2075 else if pname == "object_id" then
2076 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2078 else if pname == "==" then
2079 v.ret(v.equal_test(arguments[0], arguments[1]))
2081 else if pname == "!=" then
2082 var res = v.equal_test(arguments[0], arguments[1])
2083 v.ret(v.new_expr("!{res}", ret.as(not null)))
2086 else if cname == "Float" then
2087 if pname == "output" then
2088 v.add("printf(\"%f\\n\", {arguments.first});")
2090 else if pname == "object_id" then
2091 v.ret(v.new_expr("(double){arguments.first}", 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 == "unary -" then
2100 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2102 else if pname == "succ" then
2103 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2105 else if pname == "prec" then
2106 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2108 else if pname == "*" then
2109 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2111 else if pname == "/" then
2112 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2114 else if pname == "==" then
2115 v.ret(v.equal_test(arguments[0], arguments[1]))
2117 else if pname == "!=" then
2118 var res = v.equal_test(arguments[0], arguments[1])
2119 v.ret(v.new_expr("!{res}", ret.as(not null)))
2121 else if pname == "<" then
2122 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2124 else if pname == ">" then
2125 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2127 else if pname == "<=" then
2128 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2130 else if pname == ">=" then
2131 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2133 else if pname == "to_i" then
2134 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2137 else if cname == "NativeString" then
2138 if pname == "[]" then
2139 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2141 else if pname == "[]=" then
2142 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2144 else if pname == "copy_to" then
2145 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2147 else if pname == "atoi" then
2148 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2150 else if pname == "init" then
2151 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2154 else if cname == "NativeArray" then
2155 v.native_array_def(pname, ret, arguments)
2158 if pname == "exit" then
2159 v.add("exit({arguments[1]});")
2161 else if pname == "sys" then
2162 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2164 else if pname == "calloc_string" then
2165 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2167 else if pname == "calloc_array" then
2168 v.calloc_array(ret.as(not null), arguments)
2170 else if pname == "object_id" then
2171 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2173 else if pname == "is_same_type" then
2174 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2176 else if pname == "is_same_instance" then
2177 v.ret(v.equal_test(arguments[0], arguments[1]))
2179 else if pname == "output_class_name" then
2180 var nat = v.class_name_string(arguments.first)
2181 v.add("printf(\"%s\\n\", {nat});")
2183 else if pname == "native_class_name" then
2184 var nat = v.class_name_string(arguments.first)
2185 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2187 else if pname == "force_garbage_collection" then
2188 v.add("nit_gcollect();")
2190 else if pname == "native_argc" then
2191 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2193 else if pname == "native_argv" then
2194 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2200 # Compile an extern method
2201 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2202 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2205 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2207 externname = at.arg_as_string(v.compiler.modelbuilder)
2208 if externname == null then return false
2212 if location.file != null then
2213 var file = location.file.filename
2216 var res: nullable RuntimeVariable = null
2217 var ret = mpropdef.msignature.return_mtype
2219 ret = v.resolve_for(ret, arguments.first)
2220 res = v.new_var_extern(ret)
2222 v.adapt_signature(mpropdef, arguments)
2223 v.unbox_signature_extern(mpropdef, arguments)
2226 v.add("{externname}({arguments.join(", ")});")
2228 v.add("{res} = {externname}({arguments.join(", ")});")
2229 res = v.box_extern(res, ret.as(not null))
2235 # Compile an extern factory
2236 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2237 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2240 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2242 externname = at.arg_as_string(v.compiler.modelbuilder)
2243 if externname == null then return false
2247 if location.file != null then
2248 var file = location.file.filename
2251 v.adapt_signature(mpropdef, arguments)
2252 v.unbox_signature_extern(mpropdef, arguments)
2253 var ret = arguments.first.mtype
2254 var res = v.new_var_extern(ret)
2258 v.add("{res} = {externname}({arguments.join(", ")});")
2259 res = v.box_extern(res, ret)
2265 redef class AAttrPropdef
2266 redef fun compile_to_c(v, mpropdef, arguments)
2268 if mpropdef == mreadpropdef then
2269 assert arguments.length == 1
2273 assert nexpr != null
2275 var ret = self.mpropdef.static_mtype
2276 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2277 var guard = self.mlazypropdef.mproperty
2279 set = v.isset_attribute(self.mpropdef.mproperty, arguments.first)
2281 set = v.read_attribute(guard, arguments.first)
2283 v.add("if(likely({set})) \{")
2284 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2286 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2287 v.write_attribute(self.mpropdef.mproperty, arguments.first, value)
2288 v.assign(res, value)
2290 var true_v = v.new_expr("1", v.bool_type)
2291 v.write_attribute(guard, arguments.first, true_v)
2295 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2297 v.assign(v.frame.returnvar.as(not null), res)
2298 else if mpropdef == mwritepropdef then
2299 assert arguments.length == 2
2300 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2302 var ret = self.mpropdef.static_mtype
2303 var useiset = ret.ctype == "val*" and not ret isa MNullableType
2305 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.new_expr("1", v.bool_type))
2313 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2315 var nexpr = self.n_expr
2316 if nexpr != null and not is_lazy then
2317 var oldnode = v.current_node
2318 v.current_node = self
2319 var old_frame = v.frame
2320 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2322 var value = v.expr(nexpr, self.mpropdef.static_mtype)
2323 v.write_attribute(self.mpropdef.mproperty, recv, value)
2325 v.current_node = oldnode
2329 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2331 var nexpr = self.n_expr
2332 if nexpr != null then return
2334 var oldnode = v.current_node
2335 v.current_node = self
2336 var old_frame = v.frame
2337 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2339 # Force read to check the initialization
2340 v.read_attribute(self.mpropdef.mproperty, recv)
2342 v.current_node = oldnode
2346 redef class AClassdef
2347 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2349 if mpropdef == self.mfree_init then
2350 assert mpropdef.mproperty.is_root_init
2351 assert arguments.length == 1
2352 if not mpropdef.is_intro then
2353 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2363 # Try to compile self as an expression
2364 # Do not call this method directly, use `v
.expr
` instead
2365 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2367 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2368 var mtype = self.mtype
2369 if mtype == null then
2372 var res = v.new_var(mtype)
2373 v.add("/* {res} = NOT YET {class_name} */")
2378 # Try to compile self as a statement
2379 # Do not call this method directly, use `v
.stmt
` instead
2380 private fun stmt(v: AbstractCompilerVisitor)
2383 if res != null then v.add("{res};")
2387 redef class ABlockExpr
2390 for e in self.n_expr do v.stmt(e)
2394 var last = self.n_expr.last
2395 for e in self.n_expr do
2396 if e == last then break
2399 return v.expr(last, null)
2403 redef class AVardeclExpr
2406 var variable = self.variable.as(not null)
2407 var ne = self.n_expr
2409 var i = v.expr(ne, variable.declared_type)
2410 v.assign(v.variable(variable), i)
2415 redef class AVarExpr
2418 var res = v.variable(self.variable.as(not null))
2419 var mtype = self.mtype.as(not null)
2420 return v.autoadapt(res, mtype)
2424 redef class AVarAssignExpr
2427 var variable = self.variable.as(not null)
2428 var i = v.expr(self.n_value, variable.declared_type)
2429 v.assign(v.variable(variable), i)
2433 var variable = self.variable.as(not null)
2434 var i = v.expr(self.n_value, variable.declared_type)
2435 v.assign(v.variable(variable), i)
2440 redef class AVarReassignExpr
2443 var variable = self.variable.as(not null)
2444 var vari = v.variable(variable)
2445 var value = v.expr(self.n_value, variable.declared_type)
2446 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2448 v.assign(v.variable(variable), res)
2452 redef class ASelfExpr
2453 redef fun expr(v) do return v.frame.arguments.first
2456 redef class AContinueExpr
2457 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2460 redef class ABreakExpr
2461 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2464 redef class AReturnExpr
2467 var nexpr = self.n_expr
2468 if nexpr != null then
2469 var returnvar = v.frame.returnvar.as(not null)
2470 var i = v.expr(nexpr, returnvar.mtype)
2471 v.assign(returnvar, i)
2473 v.add("goto {v.frame.returnlabel.as(not null)};")
2477 redef class AAbortExpr
2478 redef fun stmt(v) do v.add_abort("Aborted")
2484 var cond = v.expr_bool(self.n_expr)
2485 v.add("if ({cond})\{")
2494 var res = v.new_var(self.mtype.as(not null))
2495 var cond = v.expr_bool(self.n_expr)
2496 v.add("if ({cond})\{")
2497 v.assign(res, v.expr(self.n_then.as(not null), null))
2499 v.assign(res, v.expr(self.n_else.as(not null), null))
2505 redef class AIfexprExpr
2508 var res = v.new_var(self.mtype.as(not null))
2509 var cond = v.expr_bool(self.n_expr)
2510 v.add("if ({cond})\{")
2511 v.assign(res, v.expr(self.n_then, null))
2513 v.assign(res, v.expr(self.n_else, null))
2522 v.stmt(self.n_block)
2523 var escapemark = self.escapemark
2524 if escapemark != null then
2525 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2530 redef class AWhileExpr
2534 var cond = v.expr_bool(self.n_expr)
2535 v.add("if (!{cond}) break;")
2536 v.stmt(self.n_block)
2537 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2539 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2543 redef class ALoopExpr
2547 v.stmt(self.n_block)
2548 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2550 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2554 redef class AForExpr
2557 # Shortcut on explicit range
2558 # Avoid the instantiation of the range and the iterator
2559 var nexpr = self.n_expr
2560 if self.variables.length == 1 and nexpr isa ARangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2561 var from = v.expr(nexpr.n_expr, null)
2562 var to = v.expr(nexpr.n_expr2, null)
2563 var variable = v.variable(variables.first)
2564 var one = v.new_expr("1", v.get_class("Int").mclass_type)
2566 v.assign(variable, from)
2567 v.add("for(;;) \{ /* shortcut range */")
2570 if nexpr isa AOrangeExpr then
2571 ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2573 ok = v.send(v.get_property("<=", variable.mtype), [variable, to])
2576 v.add("if(!{ok}) break;")
2578 v.stmt(self.n_block)
2580 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2581 var succ = v.send(v.get_property("successor", variable.mtype), [variable, one])
2583 v.assign(variable, succ)
2585 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2589 var cl = v.expr(self.n_expr, null)
2590 var it_meth = self.method_iterator
2591 assert it_meth != null
2592 var it = v.compile_callsite(it_meth, [cl])
2595 var isok_meth = self.method_is_ok
2596 assert isok_meth != null
2597 var ok = v.compile_callsite(isok_meth, [it])
2599 v.add("if(!{ok}) break;")
2600 if self.variables.length == 1 then
2601 var item_meth = self.method_item
2602 assert item_meth != null
2603 var i = v.compile_callsite(item_meth, [it])
2605 v.assign(v.variable(variables.first), i)
2606 else if self.variables.length == 2 then
2607 var key_meth = self.method_key
2608 assert key_meth != null
2609 var i = v.compile_callsite(key_meth, [it])
2611 v.assign(v.variable(variables[0]), i)
2612 var item_meth = self.method_item
2613 assert item_meth != null
2614 i = v.compile_callsite(item_meth, [it])
2616 v.assign(v.variable(variables[1]), i)
2620 v.stmt(self.n_block)
2621 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2622 var next_meth = self.method_next
2623 assert next_meth != null
2624 v.compile_callsite(next_meth, [it])
2626 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2630 redef class AAssertExpr
2633 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2635 var cond = v.expr_bool(self.n_expr)
2636 v.add("if (unlikely(!{cond})) \{")
2640 v.add_abort("Assert '{nid.text}' failed")
2642 v.add_abort("Assert failed")
2651 var res = v.new_var(self.mtype.as(not null))
2652 var i1 = v.expr_bool(self.n_expr)
2653 v.add("if ({i1}) \{")
2656 var i2 = v.expr_bool(self.n_expr2)
2657 v.add("{res} = {i2};")
2663 redef class AImpliesExpr
2666 var res = v.new_var(self.mtype.as(not null))
2667 var i1 = v.expr_bool(self.n_expr)
2668 v.add("if (!{i1}) \{")
2671 var i2 = v.expr_bool(self.n_expr2)
2672 v.add("{res} = {i2};")
2678 redef class AAndExpr
2681 var res = v.new_var(self.mtype.as(not null))
2682 var i1 = v.expr_bool(self.n_expr)
2683 v.add("if (!{i1}) \{")
2686 var i2 = v.expr_bool(self.n_expr2)
2687 v.add("{res} = {i2};")
2693 redef class ANotExpr
2696 var cond = v.expr_bool(self.n_expr)
2697 return v.new_expr("!{cond}", self.mtype.as(not null))
2701 redef class AOrElseExpr
2704 var res = v.new_var(self.mtype.as(not null))
2705 var i1 = v.expr(self.n_expr, null)
2706 v.add("if ({i1}!=NULL) \{")
2709 var i2 = v.expr(self.n_expr2, null)
2716 redef class AIntExpr
2717 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2720 redef class AFloatExpr
2721 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2724 redef class ACharExpr
2725 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2728 redef class AArrayExpr
2731 var mtype = self.mtype.as(MClassType).arguments.first
2732 var array = new Array[RuntimeVariable]
2733 for nexpr in self.n_exprs.n_exprs do
2734 var i = v.expr(nexpr, mtype)
2737 return v.array_instance(array, mtype)
2741 redef class AStringFormExpr
2742 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2745 redef class ASuperstringExpr
2748 var array = new Array[RuntimeVariable]
2749 for ne in self.n_exprs do
2750 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2751 var i = v.expr(ne, null)
2754 var a = v.array_instance(array, v.object_type)
2755 var res = v.send(v.get_property("to_s", a.mtype), [a])
2760 redef class ACrangeExpr
2763 var i1 = v.expr(self.n_expr, null)
2764 var i2 = v.expr(self.n_expr2, null)
2765 var mtype = self.mtype.as(MClassType)
2766 var res = v.init_instance(mtype)
2767 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2772 redef class AOrangeExpr
2775 var i1 = v.expr(self.n_expr, null)
2776 var i2 = v.expr(self.n_expr2, null)
2777 var mtype = self.mtype.as(MClassType)
2778 var res = v.init_instance(mtype)
2779 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2784 redef class ATrueExpr
2785 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2788 redef class AFalseExpr
2789 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2792 redef class ANullExpr
2793 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2796 redef class AIsaExpr
2799 var i = v.expr(self.n_expr, null)
2800 return v.type_test(i, self.cast_type.as(not null), "isa")
2804 redef class AAsCastExpr
2807 var i = v.expr(self.n_expr, null)
2808 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2810 v.add_cast(i, self.mtype.as(not null), "as")
2815 redef class AAsNotnullExpr
2818 var i = v.expr(self.n_expr, null)
2819 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2821 if i.mtype.ctype != "val*" then return i
2823 v.add("if (unlikely({i} == NULL)) \{")
2824 v.add_abort("Cast failed")
2830 redef class AParExpr
2831 redef fun expr(v) do return v.expr(self.n_expr, null)
2834 redef class AOnceExpr
2837 var mtype = self.mtype.as(not null)
2838 var name = v.get_name("varonce")
2839 var guard = v.get_name(name + "_guard")
2840 v.add_decl("static {mtype.ctype} {name};")
2841 v.add_decl("static int {guard};")
2842 var res = v.new_var(mtype)
2843 v.add("if ({guard}) \{")
2844 v.add("{res} = {name};")
2846 var i = v.expr(self.n_expr, mtype)
2847 v.add("{res} = {i};")
2848 v.add("{name} = {res};")
2849 v.add("{guard} = 1;")
2855 redef class ASendExpr
2858 var recv = v.expr(self.n_expr, null)
2860 for a in self.raw_arguments do
2861 args.add(v.expr(a, null))
2863 return v.compile_callsite(self.callsite.as(not null), args)
2867 redef class ASendReassignFormExpr
2870 var recv = v.expr(self.n_expr, null)
2872 for a in self.raw_arguments do
2873 args.add(v.expr(a, null))
2875 var value = v.expr(self.n_value, null)
2877 var left = v.compile_callsite(self.callsite.as(not null), args)
2880 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2884 v.compile_callsite(self.write_callsite.as(not null), args)
2888 redef class ASuperExpr
2891 var recv = v.frame.arguments.first
2893 for a in self.n_args.n_exprs do
2894 args.add(v.expr(a, null))
2897 var callsite = self.callsite
2898 if callsite != null then
2899 # Add additionnals arguments for the super init call
2900 if args.length == 1 then
2901 for i in [0..callsite.msignature.arity[ do
2902 args.add(v.frame.arguments[i+1])
2906 var res = v.compile_callsite(callsite, args)
2910 if args.length == 1 then
2911 args = v.frame.arguments
2914 # stantard call-next-method
2915 return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
2919 redef class ANewExpr
2922 var mtype = self.mtype.as(MClassType)
2924 var ctype = mtype.ctype
2925 if mtype.mclass.name == "NativeArray" then
2926 assert self.n_args.n_exprs.length == 1
2927 var l = v.expr(self.n_args.n_exprs.first, null)
2928 assert mtype isa MGenericType
2929 var elttype = mtype.arguments.first
2930 return v.native_array_instance(elttype, l)
2931 else if ctype == "val*" then
2932 recv = v.init_instance(mtype)
2933 else if ctype == "char*" then
2934 recv = v.new_expr("NULL/*special!*/", mtype)
2936 recv = v.new_expr("({ctype})0/*special!*/", mtype)
2939 for a in self.n_args.n_exprs do
2940 args.add(v.expr(a, null))
2942 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2943 if res2 != null then
2944 #self.debug("got {res2} from {mproperty}. drop {recv}")
2951 redef class AAttrExpr
2954 var recv = v.expr(self.n_expr, null)
2955 var mproperty = self.mproperty.as(not null)
2956 return v.read_attribute(mproperty, recv)
2960 redef class AAttrAssignExpr
2963 var recv = v.expr(self.n_expr, null)
2964 var i = v.expr(self.n_value, null)
2965 var mproperty = self.mproperty.as(not null)
2966 v.write_attribute(mproperty, recv, i)
2970 redef class AAttrReassignExpr
2973 var recv = v.expr(self.n_expr, null)
2974 var value = v.expr(self.n_value, null)
2975 var mproperty = self.mproperty.as(not null)
2976 var attr = v.read_attribute(mproperty, recv)
2977 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2979 v.write_attribute(mproperty, recv, res)
2983 redef class AIssetAttrExpr
2986 var recv = v.expr(self.n_expr, null)
2987 var mproperty = self.mproperty.as(not null)
2988 return v.isset_attribute(mproperty, recv)
2992 redef class ADebugTypeExpr
3001 redef class Array[E]
3002 # Return a new `Array` with the elements only contened in self and not in `o
`
3003 fun -(o: Array[E]): Array[E] do
3004 var res = new Array[E]
3005 for e in self do if not o.has(e) then res.add(e)
3011 # All `MProperty` associated to all `MClassDef` of `mclass
`
3012 fun properties(mclass: MClass): Set[MProperty] do
3013 if not self.properties_cache.has_key(mclass) then
3014 var properties = new HashSet[MProperty]
3015 var parents = new Array[MClass]
3016 if self.flatten_mclass_hierarchy.has(mclass) then
3017 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3019 for parent in parents do
3020 properties.add_all(self.properties(parent))
3022 for mclassdef in mclass.mclassdefs do
3023 if not self.in_importation <= mclassdef.mmodule then continue
3024 for mprop in mclassdef.intro_mproperties do
3025 properties.add(mprop)
3028 self.properties_cache[mclass] = properties
3030 return properties_cache[mclass]
3032 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3034 # Write FFI and nitni results to file
3035 fun finalize_ffi(c: AbstractCompiler) do end
3037 # Give requided addinional system libraries (as given to LD_LIBS)
3038 # Note: can return null instead of an empty set
3039 fun collect_linker_libs: nullable Set[String] do return null
3042 # Create a tool context to handle options and paths
3043 var toolcontext = new ToolContext
3045 var opt_mixins = new OptionArray("Additionals module to min-in", "-m")
3046 toolcontext.option_context.add_option(opt_mixins)
3048 toolcontext.tooldescription = "Usage: nitg [OPTION]... file.nit...\nCompiles Nit programs."
3050 # We do not add other options, so process them now!
3051 toolcontext.process_options(args)
3053 # We need a model to collect stufs
3054 var model = new Model
3055 # An a model builder to parse files
3056 var modelbuilder = new ModelBuilder(model, toolcontext)
3058 var arguments = toolcontext.option_context.rest
3059 if arguments.length > 1 and toolcontext.opt_output.value != null then
3060 print "Error: --output needs a single source file. Do you prefer --dir?"
3064 # Here we load an process all modules passed on the command line
3065 var mmodules = modelbuilder.parse(arguments)
3066 var mixins = modelbuilder.parse(opt_mixins.value)
3068 if mmodules.is_empty then return
3069 modelbuilder.run_phases
3071 for mmodule in mmodules do
3072 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3074 if not mixins.is_empty then
3077 toolcontext.run_global_phases(ms)