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
28 # Add compiling options
29 redef class ToolContext
31 var opt_output
= new OptionString("Output file", "-o", "--output")
33 var opt_dir
= new OptionString("Output directory", "--dir")
35 var opt_no_cc
= new OptionBool("Do not invoke C compiler", "--no-cc")
37 var opt_no_main
= new OptionBool("Do not generate main entry point", "--no-main")
39 var opt_make_flags
= new OptionString("Additional options to make", "--make-flags")
41 var opt_max_c_lines
= new OptionInt("Maximum number of lines in generated C files. Use 0 for unlimited", 10000, "--max-c-lines")
43 var opt_group_c_files
= new OptionBool("Group all generated code in the same series of files", "--group-c-files")
45 var opt_compile_dir
= new OptionString("Directory used to generate temporary files", "--compile-dir")
47 var opt_hardening
= new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
48 # --no-check-covariance
49 var opt_no_check_covariance
= new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
50 # --no-check-attr-isset
51 var opt_no_check_attr_isset
= new OptionBool("Disable isset tests before each attribute access (dangerous)", "--no-check-attr-isset")
53 var opt_no_check_assert
= new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
55 var opt_no_check_autocast
= new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
57 var opt_no_check_null
= new OptionBool("Disable tests of null receiver (dangerous)", "--no-check-null")
59 var opt_no_check_all
= new OptionBool("Disable all tests (dangerous)", "--no-check-all")
60 # --typing-test-metrics
61 var opt_typing_test_metrics
= new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
62 # --invocation-metrics
63 var opt_invocation_metrics
= new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
64 # --isset-checks-metrics
65 var opt_isset_checks_metrics
= new OptionBool("Enable static and dynamic count of isset checks before attributes access", "--isset-checks-metrics")
67 var opt_stacktrace
= new OptionString("Control the generation of stack traces", "--stacktrace")
69 var opt_no_gcc_directive
= new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
71 var opt_release
= new OptionBool("Compile in release mode and finalize application", "--release")
76 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
)
77 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
)
78 self.option_context
.add_option
(self.opt_typing_test_metrics
, self.opt_invocation_metrics
, self.opt_isset_checks_metrics
)
79 self.option_context
.add_option
(self.opt_stacktrace
)
80 self.option_context
.add_option
(self.opt_no_gcc_directive
)
81 self.option_context
.add_option
(self.opt_release
)
82 self.option_context
.add_option
(self.opt_max_c_lines
, self.opt_group_c_files
)
84 opt_no_main
.hidden
= true
87 redef fun process_options
(args
)
91 var st
= opt_stacktrace
.value
92 if st
== "none" or st
== "libunwind" or st
== "nitstack" then
94 else if st
== "auto" or st
== null then
96 opt_stacktrace
.value
= "nitstack"
98 print
"Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `nitstack` or `auto`."
102 if opt_output
.value
!= null and opt_dir
.value
!= null then
103 print
"Error: cannot use both --dir and --output"
107 if opt_no_check_all
.value
then
108 opt_no_check_covariance
.value
= true
109 opt_no_check_attr_isset
.value
= true
110 opt_no_check_assert
.value
= true
111 opt_no_check_autocast
.value
= true
112 opt_no_check_null
.value
= true
117 redef class ModelBuilder
118 # The compilation directory
119 var compile_dir
: String
121 # Simple indirection to `Toolchain::write_and_make`
122 protected fun write_and_make
(compiler
: AbstractCompiler)
124 var platform
= compiler
.target_platform
125 var toolchain
= platform
.toolchain
(toolcontext
, compiler
)
126 compile_dir
= toolchain
.compile_dir
127 toolchain
.write_and_make
132 # The specific tool-chain associated to the platform
133 fun toolchain
(toolcontext
: ToolContext, compiler
: AbstractCompiler): Toolchain
135 return new MakefileToolchain(toolcontext
, compiler
)
139 # Build toolchain for a specific target program, varies per `Platform`
143 var toolcontext
: ToolContext
145 # Compiler of the target program
146 var compiler
: AbstractCompiler
148 # Directory where to generate all C files
149 fun compile_dir
: String
151 var compile_dir
= toolcontext
.opt_compile_dir
.value
152 if compile_dir
== null then compile_dir
= ".nit_compile"
156 # Write all C files and compile them
157 fun write_and_make
is abstract
160 # Default toolchain using a Makefile
161 class MakefileToolchain
164 redef fun write_and_make
166 var compile_dir
= compile_dir
168 # Generate the .h and .c files
169 # A single C file regroups many compiled rumtime functions
170 # 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
172 self.toolcontext
.info
("*** WRITING C ***", 1)
176 var cfiles
= new Array[String]
177 write_files
(compile_dir
, cfiles
)
179 # Generate the Makefile
181 write_makefile
(compile_dir
, cfiles
)
184 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
186 # Execute the Makefile
188 if self.toolcontext
.opt_no_cc
.value
then return
191 self.toolcontext
.info
("*** COMPILING C ***", 1)
193 compile_c_code
(compile_dir
)
196 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
199 # Write all source files to the `compile_dir`
200 fun write_files
(compile_dir
: String, cfiles
: Array[String])
202 var platform
= compiler
.target_platform
203 if self.toolcontext
.opt_stacktrace
.value
== "nitstack" and platform
.supports_libunwind
then compiler
.build_c_to_nit_bindings
204 var cc_opt_with_libgc
= "-DWITH_LIBGC"
205 if not platform
.supports_libgc
then cc_opt_with_libgc
= ""
207 # Add gc_choser.h to aditionnal bodies
208 var gc_chooser
= new ExternCFile("gc_chooser.c", cc_opt_with_libgc
)
209 if cc_opt_with_libgc
!= "" then gc_chooser
.pkgconfigs
.add
"bdw-gc"
210 compiler
.extern_bodies
.add
(gc_chooser
)
211 var clib
= toolcontext
.nit_dir
/ "clib"
212 compiler
.files_to_copy
.add
"{clib}/gc_chooser.c"
213 compiler
.files_to_copy
.add
"{clib}/gc_chooser.h"
216 for m
in compiler
.mainmodule
.in_importation
.greaters
do
217 compiler
.finalize_ffi_for_module
(m
)
220 # Copy original .[ch] files to compile_dir
221 for src
in compiler
.files_to_copy
do
222 var basename
= src
.basename
("")
223 var dst
= "{compile_dir}/{basename}"
227 var hfilename
= compiler
.header
.file
.name
+ ".h"
228 var hfilepath
= "{compile_dir}/{hfilename}"
229 var h
= new FileWriter.open
(hfilepath
)
230 for l
in compiler
.header
.decl_lines
do
234 for l
in compiler
.header
.lines
do
240 var max_c_lines
= toolcontext
.opt_max_c_lines
.value
241 for f
in compiler
.files
do
244 var file
: nullable FileWriter = null
245 for vis
in f
.writers
do
246 if vis
== compiler
.header
then continue
247 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
248 if total_lines
== 0 then continue
250 if file
== null or (count
> max_c_lines
and max_c_lines
> 0) then
252 if file
!= null then file
.close
253 var cfilename
= "{f.name}.{i}.c"
254 var cfilepath
= "{compile_dir}/{cfilename}"
255 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
256 cfiles
.add
(cfilename
)
257 file
= new FileWriter.open
(cfilepath
)
258 file
.write
"#include \"{f.name}.0.h\
"\n"
261 for l
in vis
.decl_lines
do
265 for l
in vis
.lines
do
270 if file
== null then continue
273 var cfilename
= "{f.name}.0.h"
274 var cfilepath
= "{compile_dir}/{cfilename}"
275 var hfile
: nullable FileWriter = null
276 hfile
= new FileWriter.open
(cfilepath
)
277 hfile
.write
"#include \"{hfilename}\
"\n"
278 for key
in f
.required_declarations
do
279 if not compiler
.provided_declarations
.has_key
(key
) then
280 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
282 node
.debug
"No provided declaration for {key}"
284 print
"No provided declaration for {key}"
288 hfile
.write compiler
.provided_declarations
[key
]
294 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
297 # Get the name of the Makefile to use
298 fun makefile_name
: String do return "{compiler.mainmodule.c_name}.mk"
300 # Get the default name of the executable to produce
301 fun default_outname
: String
303 var mainmodule
= compiler
.mainmodule
305 # Search a non fictive module
306 var res
= mainmodule
.name
307 while mainmodule
.is_fictive
do
308 mainmodule
= mainmodule
.in_importation
.direct_greaters
.first
309 res
= mainmodule
.name
314 # Combine options and platform informations to get the final path of the outfile
315 fun outfile
(mainmodule
: MModule): String
317 var res
= self.toolcontext
.opt_output
.value
318 if res
!= null then return res
319 res
= default_outname
320 var dir
= self.toolcontext
.opt_dir
.value
321 if dir
!= null then return dir
.join_path
(res
)
326 fun write_makefile
(compile_dir
: String, cfiles
: Array[String])
328 var mainmodule
= compiler
.mainmodule
329 var platform
= compiler
.target_platform
331 var outname
= outfile
(mainmodule
)
333 var real_outpath
= compile_dir
.relpath
(outname
)
334 var outpath
= real_outpath
.escape_to_mk
335 if outpath
!= real_outpath
then
336 # If the name is crazy and need escaping, we will do an indirection
337 # 1. generate the binary in the .nit_compile dir under an escaped name
338 # 2. copy the binary at the right place in the `all` goal.
339 outpath
= mainmodule
.c_name
341 var makename
= makefile_name
342 var makepath
= "{compile_dir}/{makename}"
343 var makefile
= new FileWriter.open
(makepath
)
345 var linker_options
= new HashSet[String]
346 for m
in mainmodule
.in_importation
.greaters
do
347 var libs
= m
.collect_linker_libs
348 if libs
!= null then linker_options
.add_all
(libs
)
351 makefile
.write
("CC = ccache cc\nCXX = ccache c++\nCFLAGS = -g -O2 -Wno-unused-value -Wno-switch -Wno-attributes\nCINCL =\nLDFLAGS ?= \nLDLIBS ?= -lm {linker_options.join(" ")}\n\n")
353 var ost
= toolcontext
.opt_stacktrace
.value
354 if (ost
== "libunwind" or ost
== "nitstack") and platform
.supports_libunwind
then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
356 # Dynamic adaptations
357 # While `platform` enable complex toolchains, they are statically applied
358 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
360 # Check and adapt the targeted system
361 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
362 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
363 # remove -lunwind since it is already included on macosx
364 makefile
.write
("\tNEED_LIBUNWIND :=\n")
365 makefile
.write
("endif\n\n")
367 # Check and adapt for the compiler used
368 # clang need an additionnal `-Qunused-arguments`
369 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
371 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
373 makefile
.write
("all: {outpath}\n")
374 if outpath
!= real_outpath
then
375 makefile
.write
("\tcp -- {outpath.escape_to_sh} {real_outpath.escape_to_sh.replace("$","$$")}")
379 var ofiles
= new Array[String]
380 var dep_rules
= new Array[String]
381 # Compile each generated file
383 var o
= f
.strip_extension
(".c") + ".o"
384 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
389 # Generate linker script, if any
390 if not compiler
.linker_script
.is_empty
then
391 var linker_script_path
= "{compile_dir}/linker_script"
392 ofiles
.add
"linker_script"
393 var f
= new FileWriter.open
(linker_script_path
)
394 for l
in compiler
.linker_script
do
401 var java_files
= new Array[ExternFile]
403 var pkgconfigs
= new Array[String]
404 for f
in compiler
.extern_bodies
do
405 pkgconfigs
.add_all f
.pkgconfigs
408 if not pkgconfigs
.is_empty
then
410 # does pkg-config exists?
411 ifneq ($(shell which pkg-config >/dev/null; echo $$?), 0)
412 $(error "Command `pkg-config` not found. Please install it")
415 for p
in pkgconfigs
do
417 # Check for library {{{p}}}
418 ifneq ($(shell pkg-config --exists '{{{p}}}'; echo $$?), 0)
419 $(error "pkg-config: package {{{p}}} is not found.")
425 # Compile each required extern body into a specific .o
426 for f
in compiler
.extern_bodies
do
427 var o
= f
.makefile_rule_name
428 var ff
= f
.filename
.basename
("")
429 makefile
.write
("{o}: {ff}\n")
430 makefile
.write
("\t{f.makefile_rule_content}\n\n")
431 dep_rules
.add
(f
.makefile_rule_name
)
433 if f
.compiles_to_o_file
then ofiles
.add
(o
)
434 if f
.add_to_jar
then java_files
.add
(f
)
437 if not java_files
.is_empty
then
438 var jar_file
= "{outpath}.jar"
440 var class_files_array
= new Array[String]
441 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
442 var class_files
= class_files_array
.join
(" ")
444 makefile
.write
("{jar_file}: {class_files}\n")
445 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
446 dep_rules
.add jar_file
451 if not pkgconfigs
.is_empty
then
452 pkg
= "`pkg-config --libs {pkgconfigs.join(" ")}`"
454 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath.escape_to_sh} {ofiles.join(" ")} $(LDLIBS) {pkg}\n\n")
456 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n")
457 if outpath
!= real_outpath
then
458 makefile
.write
("\trm -- {outpath.escape_to_sh} 2>/dev/null\n")
461 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
463 makepath
.file_copy_to
"{compile_dir}/Makefile"
466 # The C code is generated, compile it to an executable
467 fun compile_c_code
(compile_dir
: String)
469 var makename
= makefile_name
471 var makeflags
= self.toolcontext
.opt_make_flags
.value
472 if makeflags
== null then makeflags
= ""
473 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
476 if self.toolcontext
.verbose_level
>= 3 then
477 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
479 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
482 toolcontext
.error
(null, "make failed! Error code: {res}.")
487 # Singleton that store the knowledge about the compilation process
488 abstract class AbstractCompiler
489 type VISITOR: AbstractCompilerVisitor
491 # Table corresponding c_names to nit names (methods)
492 var names
= new HashMap[String, String]
494 # The main module of the program currently compiled
495 # Is assigned during the separate compilation
496 var mainmodule
: MModule is writable
498 # The real main module of the program
499 var realmainmodule
: MModule is noinit
501 # The modelbuilder used to know the model and the AST
502 var modelbuilder
: ModelBuilder is protected writable
504 # Is hardening asked? (see --hardening)
505 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
507 # The targeted specific platform
508 var target_platform
: Platform is noinit
512 self.realmainmodule
= mainmodule
513 target_platform
= mainmodule
.target_platform
or else new Platform
516 # Do the full code generation of the program `mainmodule`
517 # It is the main method usually called after the instantiation
518 fun do_compilation
is abstract
520 # Force the creation of a new file
521 # The point is to avoid contamination between must-be-compiled-separately files
522 fun new_file
(name
: String): CodeFile
524 if modelbuilder
.toolcontext
.opt_group_c_files
.value
then
525 if self.files
.is_empty
then
526 var f
= new CodeFile(mainmodule
.c_name
)
529 return self.files
.first
531 var f
= new CodeFile(name
)
536 # The list of all associated files
537 # Used to generate .c files
538 var files
= new List[CodeFile]
540 # Initialize a visitor specific for a compiler engine
541 fun new_visitor
: VISITOR is abstract
543 # Where global declaration are stored (the main .h)
544 var header
: CodeWriter is writable, noinit
546 # Additionnal linker script for `ld`.
547 # Mainly used to do specific link-time symbol resolution
548 var linker_script
= new Array[String]
550 # Provide a declaration that can be requested (before or latter) by a visitor
551 fun provide_declaration
(key
: String, s
: String)
553 if self.provided_declarations
.has_key
(key
) then
554 assert self.provided_declarations
[key
] == s
556 self.provided_declarations
[key
] = s
559 private var provided_declarations
= new HashMap[String, String]
561 private var requirers_of_declarations
= new HashMap[String, ANode]
563 # Builds the .c and .h files to be used when generating a Stack Trace
564 # Binds the generated C function names to Nit function names
565 fun build_c_to_nit_bindings
567 var compile_dir
= modelbuilder
.compile_dir
569 var stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.c")
570 stream
.write
("#include <string.h>\n")
571 stream
.write
("#include <stdlib.h>\n")
572 stream
.write
("#include \"c_functions_hash
.h\
"\n")
573 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
574 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
575 stream
.write
("char* procname = malloc(len+1);")
576 stream
.write
("memcpy(procname, procproc, len);")
577 stream
.write
("procname[len] = '\\0';")
578 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
579 for i
in names
.keys
do
581 stream.write(i.escape_to_c)
582 stream.write("\
",\"")
583 stream.write(names[i].escape_to_c)
584 stream.write("\
"\},\n")
586 stream
.write
("\};\n")
587 stream
.write
("int i;")
588 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
589 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
590 stream
.write
("free(procname);")
591 stream
.write
("return map[i].nit_name;")
594 stream
.write
("free(procname);")
595 stream
.write
("return NULL;")
599 stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.h")
600 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
603 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
607 # This method call compile_header_strucs method that has to be refined
608 fun compile_header
do
609 self.header
.add_decl
("#include <stdlib.h>")
610 self.header
.add_decl
("#include <stdio.h>")
611 self.header
.add_decl
("#include <string.h>")
612 self.header
.add_decl
("#include <sys/types.h>\n")
613 self.header
.add_decl
("#include <unistd.h>\n")
614 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
615 self.header
.add_decl
("#ifdef ANDROID")
616 self.header
.add_decl
(" #include <android/log.h>")
617 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
618 self.header
.add_decl
("#else")
619 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
620 self.header
.add_decl
("#endif")
622 compile_header_structs
623 compile_nitni_structs
625 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
626 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
627 # Signal handler function prototype
628 self.header
.add_decl
("void fatal_exit(int);")
630 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
633 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
634 self.header
.add_decl
("#define likely(x) (x)")
635 self.header
.add_decl
("#define unlikely(x) (x)")
636 else if gccd_disable
.has
("correct-likely") then
637 # invert the `likely` definition
638 # Used by masochists to bench the worst case
639 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
640 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
642 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
643 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
646 # Global variable used by intern methods
647 self.header
.add_decl
("extern int glob_argc;")
648 self.header
.add_decl
("extern char **glob_argv;")
649 self.header
.add_decl
("extern val *glob_sys;")
652 # Declaration of structures for live Nit types
653 protected fun compile_header_structs
is abstract
655 # Declaration of structures for nitni undelying the FFI
656 protected fun compile_nitni_structs
658 self.header
.add_decl
"""
659 /* Native reference to Nit objects */
660 /* This structure is used to represent every Nit type in extern methods and custom C code. */
662 struct nitni_ref *next,
663 *prev; /* adjacent global references in global list */
664 int count; /* number of time this global reference has been marked */
667 /* List of global references from C code to Nit objects */
668 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
669 struct nitni_global_ref_list_t {
670 struct nitni_ref *head, *tail;
672 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
674 /* Initializer of global reference list */
675 extern void nitni_global_ref_list_init();
677 /* Intern function to add a global reference to the list */
678 extern void nitni_global_ref_add( struct nitni_ref *ref );
680 /* Intern function to remove a global reference from the list */
681 extern void nitni_global_ref_remove( struct nitni_ref *ref );
683 /* Increase count on an existing global reference */
684 extern void nitni_global_ref_incr( struct nitni_ref *ref );
686 /* Decrease count on an existing global reference */
687 extern void nitni_global_ref_decr( struct nitni_ref *ref );
691 fun compile_finalizer_function
693 var finalizable_type
= mainmodule
.finalizable_type
694 if finalizable_type
== null then return
696 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
698 if finalize_meth
== null then
699 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
703 var v
= self.new_visitor
704 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
705 var recv
= v
.new_expr
("obj", finalizable_type
)
706 v
.send
(finalize_meth
, [recv
])
710 # Generate the main C function.
714 # * allocate the Sys object if it exists
715 # * call init if is exists
716 # * call main if it exists
717 fun compile_main_function
719 var v
= self.new_visitor
720 v
.add_decl
("#include <signal.h>")
721 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
722 var platform
= target_platform
724 if not platform
.supports_libunwind
then ost
= "none"
726 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
728 if ost
== "nitstack" or ost
== "libunwind" then
729 v
.add_decl
("#define UNW_LOCAL_ONLY")
730 v
.add_decl
("#include <libunwind.h>")
731 if ost
== "nitstack" then
732 v
.add_decl
("#include \"c_functions_hash
.h\
"")
735 v
.add_decl
("int glob_argc;")
736 v
.add_decl
("char **glob_argv;")
737 v
.add_decl
("val *glob_sys;")
739 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
740 for tag
in count_type_test_tags
do
741 v
.add_decl
("long count_type_test_resolved_{tag};")
742 v
.add_decl
("long count_type_test_unresolved_{tag};")
743 v
.add_decl
("long count_type_test_skipped_{tag};")
744 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
745 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
746 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
750 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
751 v
.add_decl
("long count_invoke_by_tables;")
752 v
.add_decl
("long count_invoke_by_direct;")
753 v
.add_decl
("long count_invoke_by_inline;")
754 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
755 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
756 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
759 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
760 v
.add_decl
("long count_attr_reads = 0;")
761 v
.add_decl
("long count_isset_checks = 0;")
762 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
763 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
766 v
.add_decl
("static void show_backtrace(void) \{")
767 if ost
== "nitstack" or ost
== "libunwind" then
768 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
769 v
.add_decl
("unw_cursor_t cursor;")
770 v
.add_decl
("if(opt==NULL)\{")
771 v
.add_decl
("unw_context_t uc;")
772 v
.add_decl
("unw_word_t ip;")
773 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
774 v
.add_decl
("unw_getcontext(&uc);")
775 v
.add_decl
("unw_init_local(&cursor, &uc);")
776 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
777 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
778 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
779 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
780 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
781 if ost
== "nitstack" then
782 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
783 v
.add_decl
(" if (recv != NULL)\{")
784 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
785 v.add_decl(" \}else\{")
786 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
789 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
792 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
793 v.add_decl("free(procname);")
798 v.add_decl("void sig_handler(int signo)\{")
799 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
800 v.add_decl("show_backtrace();")
802 v.add_decl("signal(signo, SIG_DFL);")
803 v.add_decl("kill(getpid(), signo);")
806 v.add_decl("void fatal_exit(int status) \{")
807 v.add_decl("show_backtrace();")
808 v.add_decl("exit(status);")
812 v.add_decl("int nit_main(int argc, char** argv) \{")
814 v.add_decl("int main(int argc, char** argv) \{")
817 v.add("signal(SIGABRT, sig_handler);")
818 v.add("signal(SIGFPE, sig_handler);")
819 v.add("signal(SIGILL, sig_handler);")
820 v.add("signal(SIGINT, sig_handler);")
821 v.add("signal(SIGTERM, sig_handler);")
822 v.add("signal(SIGSEGV, sig_handler);")
823 v.add("signal(SIGPIPE, sig_handler);")
825 v.add("glob_argc = argc; glob_argv = argv;")
826 v.add("initialize_gc_option();")
828 v.add "initialize_nitni_global_refs();"
830 var main_type = mainmodule.sys_type
831 if main_type != null then
832 var mainmodule = v.compiler.mainmodule
833 var glob_sys = v.init_instance(main_type)
834 v.add("glob_sys = {glob_sys};")
835 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
836 if main_init != null then
837 v.send(main_init, [glob_sys])
839 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
840 mainmodule.try_get_primitive_method("main", main_type.mclass)
841 if main_method != null then
842 v.send(main_method, [glob_sys])
846 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
847 v.add_decl("long count_type_test_resolved_total = 0;")
848 v.add_decl("long count_type_test_unresolved_total = 0;")
849 v.add_decl("long count_type_test_skipped_total = 0;")
850 v.add_decl("long count_type_test_total_total = 0;")
851 for tag in count_type_test_tags do
852 v.add_decl("long count_type_test_total_{tag};")
853 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
854 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
855 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
856 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
857 v.add("count_type_test_total_total += count_type_test_total_{tag};")
859 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
860 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
861 var tags = count_type_test_tags.to_a
864 v.add("printf(\"{tag}\");")
865 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
866 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
867 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
868 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
872 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
873 v.add_decl("long count_invoke_total;")
874 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
875 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
876 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
877 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
878 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
881 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
882 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
883 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
889 for m in mainmodule.in_importation.greaters do
890 var f = "FILE_"+m.c_name
891 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
892 provide_declaration(f, "extern const char {f}[];")
896 # Copile all C functions related to the [incr|decr]_ref features of the FFI
897 fun compile_nitni_global_ref_functions
899 var v = self.new_visitor
901 struct nitni_global_ref_list_t *nitni_global_ref_list;
902 void initialize_nitni_global_refs() {
903 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
904 nitni_global_ref_list->head = NULL;
905 nitni_global_ref_list->tail = NULL;
908 void nitni_global_ref_add( struct nitni_ref *ref ) {
909 if ( nitni_global_ref_list->head == NULL ) {
910 nitni_global_ref_list->head = ref;
913 nitni_global_ref_list->tail->next = ref;
914 ref->prev = nitni_global_ref_list->tail;
916 nitni_global_ref_list->tail = ref;
921 void nitni_global_ref_remove( struct nitni_ref *ref ) {
922 if ( ref->prev == NULL ) {
923 nitni_global_ref_list->head = ref->next;
925 ref->prev->next = ref->next;
928 if ( ref->next == NULL ) {
929 nitni_global_ref_list->tail = ref->prev;
931 ref->next->prev = ref->prev;
935 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
936 if ( ref->count == 0 ) /* not registered */
939 nitni_global_ref_add( ref );
945 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
946 if ( ref->count == 1 ) /* was last reference */
948 /* remove from list */
949 nitni_global_ref_remove( ref );
957 # List of additional files required to compile (FFI)
958 var extern_bodies = new Array[ExternFile]
960 # List of source files to copy over to the compile dir
961 var files_to_copy = new Array[String]
963 # This is used to avoid adding an extern file more than once
964 private var seen_extern = new ArraySet[String]
966 # Generate code that initialize the attributes on a new instance
967 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
969 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
970 self.mainmodule.linearize_mclassdefs(cds)
972 for npropdef in modelbuilder.collect_attr_propdef(cd) do
973 npropdef.init_expr(v, recv)
978 # Generate code that check if an attribute is correctly initialized
979 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
981 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
982 self.mainmodule.linearize_mclassdefs(cds)
984 for npropdef in modelbuilder.collect_attr_propdef(cd) do
985 npropdef.check_expr(v, recv)
992 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
993 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
994 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
995 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
997 protected fun init_count_type_test_tags: HashMap[String, Int]
999 var res = new HashMap[String, Int]
1000 for tag in count_type_test_tags do
1006 # Display stats about compilation process
1010 # * type tests against resolved types (`x
isa Collection[Animal]`)
1011 # * type tests against unresolved types (`x
isa Collection[E
]`)
1012 # * type tests skipped
1013 # * type tests total
1016 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1017 print "# static count_type_test"
1018 print "\tresolved:\tunresolved\tskipped\ttotal"
1019 var count_type_test_total = init_count_type_test_tags
1020 count_type_test_resolved["total"] = 0
1021 count_type_test_unresolved["total"] = 0
1022 count_type_test_skipped["total"] = 0
1023 count_type_test_total["total"] = 0
1024 for tag in count_type_test_tags do
1025 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1026 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1027 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1028 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1029 count_type_test_total["total"] += count_type_test_total[tag]
1031 var count_type_test = count_type_test_total["total"]
1032 var tags = count_type_test_tags.to_a
1036 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1037 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1038 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1039 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1045 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1048 # A file unit (may be more than one file if
1049 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1052 var writers = new Array[CodeWriter]
1053 var required_declarations = new HashSet[String]
1056 # Where to store generated lines
1059 var lines: List[String] = new List[String]
1060 var decl_lines: List[String] = new List[String]
1062 # Add a line in the main part of the generated C
1063 fun add(s: String) do self.lines.add(s)
1066 # (used for local or global declaration)
1067 fun add_decl(s: String) do self.decl_lines.add(s)
1071 file.writers.add(self)
1075 # A visitor on the AST of property definition that generate the C code.
1076 abstract class AbstractCompilerVisitor
1078 type COMPILER: AbstractCompiler
1080 # The associated compiler
1081 var compiler: COMPILER
1083 # The current visited AST node
1084 var current_node: nullable ANode = null is writable
1086 # The current `StaticFrame`
1087 var frame: nullable StaticFrame = null is writable
1089 # Alias for self.compiler.mainmodule.object_type
1090 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1092 # Alias for self.compiler.mainmodule.bool_type
1093 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1095 var writer: CodeWriter is noinit
1099 self.writer = new CodeWriter(compiler.files.last)
1102 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1103 fun get_property(name: String, recv: MType): MMethod
1105 assert recv isa MClassType
1106 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1109 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1111 var initializers = callsite.mpropdef.initializers
1112 if not initializers.is_empty then
1113 var recv = arguments.first
1116 for p in initializers do
1117 if p isa MMethod then
1119 for x in p.intro.msignature.mparameters do
1120 args.add arguments[i]
1124 else if p isa MAttribute then
1125 self.write_attribute(p, recv, arguments[i])
1129 assert i == arguments.length
1131 return self.send(callsite.mproperty, [recv])
1134 return self.send(callsite.mproperty, arguments)
1137 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1139 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1141 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1143 # Return an element of a native array.
1144 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1145 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1147 # Store an element in a native array.
1148 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1149 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1151 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1152 # This method is used to manage varargs in signatures and returns the real array
1153 # of runtime variables to use in the call.
1154 fun varargize(mpropdef: MMethodDef, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1156 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1157 var res = new Array[RuntimeVariable]
1160 if args.is_empty then return res
1162 var vararg_rank = msignature.vararg_rank
1163 var vararg_len = args.length - msignature.arity
1164 if vararg_len < 0 then vararg_len = 0
1166 for i in [0..msignature.arity[ do
1167 if i == vararg_rank then
1169 if ne isa AVarargExpr then
1170 var e = self.expr(ne.n_expr, null)
1174 var vararg = new Array[RuntimeVariable]
1175 for j in [vararg_rank..vararg_rank+vararg_len] do
1176 var e = self.expr(args[j], null)
1179 var elttype = msignature.mparameters[vararg_rank].mtype
1180 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1184 if i > vararg_rank then j += vararg_len
1185 var e = self.expr(args[j], null)
1194 # Anchor a type to the main module and the current receiver
1195 fun anchor(mtype: MType): MType
1197 if not mtype.need_anchor then return mtype
1198 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1201 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1203 if not mtype.need_anchor then return mtype
1204 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1207 # Unsafely cast a value to a new type
1208 # ie the result share the same C variable but my have a different mcasttype
1209 # NOTE: if the adaptation is useless then `value
` is returned as it.
1210 # ENSURE: `result
.name
== value
.name
`
1211 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1213 mtype = self.anchor(mtype)
1214 var valmtype = value.mcasttype
1215 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1219 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1220 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1223 var res = new RuntimeVariable(value.name, valmtype, mtype)
1228 # Generate a super call from a method definition
1229 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1231 # Adapt the arguments of a method according to targetted `MMethodDef`
1232 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1234 # Unbox all the arguments of a method when implemented `extern` or `intern`
1235 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1237 # Box or unbox a value to another type iff a C type conversion is needed
1238 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1239 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1241 # Box extern classes to be used in the generated code
1242 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1244 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1245 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1247 # Generate a polymorphic subtype test
1248 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1250 # Generate the code required to dynamically check if 2 objects share the same runtime type
1251 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1253 # Generate a Nit "is" for two runtime_variables
1254 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1258 # Generate a static call on a method definition
1259 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1261 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1262 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1264 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1265 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1267 assert t isa MClassType
1268 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1269 return self.call(propdef, t, args)
1272 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1273 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1275 assert t isa MClassType
1276 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1277 return self.call(m, t, args)
1280 # Attributes handling
1282 # Generate a polymorphic attribute is_set test
1283 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1285 # Generate a polymorphic attribute read
1286 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1288 # Generate a polymorphic attribute write
1289 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1293 # Add a check and an abort for a null receiver if needed
1294 fun check_recv_notnull(recv: RuntimeVariable)
1296 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1298 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1300 self.add("if (unlikely({recv} == NULL)) \{")
1301 self.add_abort("Receiver is null")
1308 private var names = new HashSet[String]
1309 private var last: Int = 0
1311 # Return a new name based on `s
` and unique in the visitor
1312 fun get_name(s: String): String
1314 if not self.names.has(s) then
1318 var i = self.last + 1
1321 if not self.names.has(s2) then
1330 # Return an unique and stable identifier associated with an escapemark
1331 fun escapemark_name(e: nullable EscapeMark): String
1334 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1336 if name == null then name = "label"
1337 name = get_name(name)
1338 frame.escapemark_names[e] = name
1342 # Insert a C label for associated with an escapemark
1343 fun add_escape_label(e: nullable EscapeMark)
1345 if e == null then return
1346 if e.escapes.is_empty then return
1347 add("BREAK_{escapemark_name(e)}: (void)0;")
1350 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1351 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1352 fun class_name_string(value: RuntimeVariable): String is abstract
1354 # Variables handling
1356 protected var variables = new HashMap[Variable, RuntimeVariable]
1358 # Return the local runtime_variable associated to a Nit local variable
1359 fun variable(variable: Variable): RuntimeVariable
1361 if self.variables.has_key(variable) then
1362 return self.variables[variable]
1364 var name = self.get_name("var_{variable.name}")
1365 var mtype = variable.declared_type.as(not null)
1366 mtype = self.anchor(mtype)
1367 var res = new RuntimeVariable(name, mtype, mtype)
1368 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1369 self.variables[variable] = res
1374 # Return a new uninitialized local runtime_variable
1375 fun new_var(mtype: MType): RuntimeVariable
1377 mtype = self.anchor(mtype)
1378 var name = self.get_name("var")
1379 var res = new RuntimeVariable(name, mtype, mtype)
1380 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1384 # The difference with `new_var
` is the C static type of the local variable
1385 fun new_var_extern(mtype: MType): RuntimeVariable
1387 mtype = self.anchor(mtype)
1388 var name = self.get_name("var")
1389 var res = new RuntimeVariable(name, mtype, mtype)
1390 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1394 # Return a new uninitialized named runtime_variable
1395 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1397 mtype = self.anchor(mtype)
1398 var res = new RuntimeVariable(name, mtype, mtype)
1399 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1403 # Correctly assign a left and a right value
1404 # Boxing and unboxing is performed if required
1405 fun assign(left, right: RuntimeVariable)
1407 right = self.autobox(right, left.mtype)
1408 self.add("{left} = {right};")
1411 # Generate instances
1413 # Generate a alloc-instance + init-attributes
1414 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1416 # Allocate and init attributes of an instance of a standard or extern class
1418 # Does not support universals and the pseudo-internal `NativeArray` class.
1419 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1422 var ctype = mtype.ctype
1423 assert mtype.mclass.name != "NativeArray"
1424 if not mtype.is_c_primitive then
1425 recv = init_instance(mtype)
1426 else if ctype == "char*" then
1427 recv = new_expr("NULL/*special!*/", mtype)
1429 recv = new_expr("({ctype})0/*special!*/", mtype)
1434 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1435 fun set_finalizer(recv: RuntimeVariable)
1437 var mtype = recv.mtype
1438 var finalizable_type = compiler.mainmodule.finalizable_type
1439 if finalizable_type != null and not mtype.need_anchor and
1440 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1441 add "gc_register_finalizer({recv});"
1445 # The currently processed module
1447 # alias for `compiler
.mainmodule
`
1448 fun mmodule: MModule do return compiler.mainmodule
1450 # Generate an integer value
1451 fun int_instance(value: Int): RuntimeVariable
1453 var t = mmodule.int_type
1454 var res = new RuntimeVariable("{value.to_s}l", t, t)
1458 # Generate a char value
1459 fun char_instance(value: Char): RuntimeVariable
1461 var t = mmodule.char_type
1462 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1466 # Generate a float value
1468 # FIXME pass a Float, not a string
1469 fun float_instance(value: String): RuntimeVariable
1471 var t = mmodule.float_type
1472 var res = new RuntimeVariable("{value}", t, t)
1476 # Generate an integer value
1477 fun bool_instance(value: Bool): RuntimeVariable
1479 var s = if value then "1" else "0"
1480 var res = new RuntimeVariable(s, bool_type, bool_type)
1484 # Generate the `null` value
1485 fun null_instance: RuntimeVariable
1487 var t = compiler.mainmodule.model.null_type
1488 var res = new RuntimeVariable("((val*)NULL)", t, t)
1492 # Generate a string value
1493 fun string_instance(string: String): RuntimeVariable
1495 var mtype = mmodule.string_type
1496 var name = self.get_name("varonce")
1497 self.add_decl("static {mtype.ctype} {name};")
1498 var res = self.new_var(mtype)
1499 self.add("if (likely({name}!=NULL)) \{")
1500 self.add("{res} = {name};")
1501 self.add("\} else \{")
1502 var native_mtype = mmodule.native_string_type
1503 var nat = self.new_var(native_mtype)
1504 self.add("{nat} = \"{string.escape_to_c}\";")
1505 var length = self.int_instance(string.length)
1506 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1507 self.add("{name} = {res};")
1512 fun value_instance(object: Object): RuntimeVariable
1514 if object isa Int then
1515 return int_instance(object)
1516 else if object isa Bool then
1517 return bool_instance(object)
1518 else if object isa String then
1519 return string_instance(object)
1525 # Generate an array value
1526 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1528 # Get an instance of a array for a vararg
1529 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1533 # Add a line in the main part of the generated C
1534 fun add(s: String) do self.writer.lines.add(s)
1537 # (used for local or global declaration)
1538 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1540 # Request the presence of a global declaration
1541 fun require_declaration(key: String)
1543 var reqs = self.writer.file.required_declarations
1544 if reqs.has(key) then return
1546 var node = current_node
1547 if node != null then compiler.requirers_of_declarations[key] = node
1550 # Add a declaration in the local-header
1551 # The declaration is ensured to be present once
1552 fun declare_once(s: String)
1554 self.compiler.provide_declaration(s, s)
1555 self.require_declaration(s)
1558 # Look for a needed .h and .c file for a given module
1559 # This is used for the legacy FFI
1560 fun add_extern(mmodule: MModule)
1562 var file = mmodule.location.file.filename
1563 file = file.strip_extension(".nit")
1564 var tryfile = file + ".nit.h"
1565 if tryfile.file_exists then
1566 self.declare_once("#include \"{tryfile.basename("")}\"")
1567 self.compiler.files_to_copy.add(tryfile)
1569 tryfile = file + "_nit.h"
1570 if tryfile.file_exists then
1571 self.declare_once("#include \"{tryfile.basename("")}\"")
1572 self.compiler.files_to_copy.add(tryfile)
1575 if self.compiler.seen_extern.has(file) then return
1576 self.compiler.seen_extern.add(file)
1577 tryfile = file + ".nit.c"
1578 if not tryfile.file_exists then
1579 tryfile = file + "_nit.c"
1580 if not tryfile.file_exists then return
1582 var f = new ExternCFile(tryfile.basename(""), "")
1583 self.compiler.extern_bodies.add(f)
1584 self.compiler.files_to_copy.add(tryfile)
1587 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1588 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1590 var res = new_var(mtype)
1591 self.add("{res} = {cexpr};")
1595 # Generate generic abort
1596 # used by aborts, asserts, casts, etc.
1597 fun add_abort(message: String)
1599 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1605 if self.current_node != null and self.current_node.location.file != null and
1606 self.current_node.location.file.mmodule != null then
1607 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1608 self.require_declaration(f)
1609 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1611 self.add("PRINT_ERROR(\"\\n\");")
1613 self.add("fatal_exit(1);")
1616 # Add a dynamic cast
1617 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1619 var res = self.type_test(value, mtype, tag)
1620 self.add("if (unlikely(!{res})) \{")
1621 var cn = self.class_name_string(value)
1622 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1627 # Generate a return with the value `s
`
1628 fun ret(s: RuntimeVariable)
1630 self.assign(self.frame.returnvar.as(not null), s)
1631 self.add("goto {self.frame.returnlabel.as(not null)};")
1634 # Compile a statement (if any)
1635 fun stmt(nexpr: nullable AExpr)
1637 if nexpr == null then return
1639 var narray = nexpr.comprehension
1640 if narray != null then
1641 var recv = frame.comprehension.as(not null)
1642 var val = expr(nexpr, narray.element_mtype)
1643 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1647 var old = self.current_node
1648 self.current_node = nexpr
1650 self.current_node = old
1653 # Compile an expression an return its result
1654 # `mtype
` is the expected return type, pass null if no specific type is expected.
1655 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1657 var old = self.current_node
1658 self.current_node = nexpr
1659 var res = nexpr.expr(self).as(not null)
1660 if mtype != null then
1661 mtype = self.anchor(mtype)
1662 res = self.autobox(res, mtype)
1664 res = autoadapt(res, nexpr.mtype.as(not null))
1665 var implicit_cast_to = nexpr.implicit_cast_to
1666 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1667 add_cast(res, implicit_cast_to, "auto")
1668 res = autoadapt(res, implicit_cast_to)
1670 self.current_node = old
1674 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1675 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1677 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1678 fun debug(message: String)
1680 var node = self.current_node
1681 if node == null then
1682 print "?: {message}"
1686 self.add("/* DEBUG: {message} */")
1690 # A C function associated to a Nit method
1691 # Because of customization, a given Nit method can be compiler more that once
1692 abstract class AbstractRuntimeFunction
1694 type COMPILER: AbstractCompiler
1695 type VISITOR: AbstractCompilerVisitor
1697 # The associated Nit method
1698 var mmethoddef: MMethodDef
1700 # The mangled c name of the runtime_function
1701 # Subclasses should redefine `build_c_name
` instead
1704 var res = self.c_name_cache
1705 if res != null then return res
1706 res = self.build_c_name
1707 self.c_name_cache = res
1711 # Non cached version of `c_name
`
1712 protected fun build_c_name: String is abstract
1714 protected var c_name_cache: nullable String = null is writable
1716 # Implements a call of the runtime_function
1717 # May inline the body or generate a C function call
1718 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1720 # Generate the code for the `AbstractRuntimeFunction`
1721 # Warning: compile more than once compilation makes CC unhappy
1722 fun compile_to_c(compiler: COMPILER) is abstract
1725 # A runtime variable hold a runtime value in C.
1726 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1728 # 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.
1729 class RuntimeVariable
1730 # The name of the variable in the C code
1733 # The static type of the variable (as declard in C)
1736 # The current casted type of the variable (as known in Nit)
1737 var mcasttype: MType is writable
1739 # If the variable exaclty a mcasttype?
1740 # false (usual value) means that the variable is a mcasttype or a subtype.
1741 var is_exact: Bool = false is writable
1745 assert not mtype.need_anchor
1746 assert not mcasttype.need_anchor
1749 redef fun to_s do return name
1754 if self.is_exact then
1755 exact_str = " exact"
1760 if self.mtype == self.mcasttype then
1761 type_str = "{mtype}{exact_str}"
1763 type_str = "{mtype}({mcasttype}{exact_str})"
1765 return "<{name}:{type_str}>"
1769 # The static context of a visited property in a `AbstractCompilerVisitor`
1772 type VISITOR: AbstractCompilerVisitor
1774 # The associated visitor
1775 var visitor: VISITOR
1777 # The executed property.
1778 # A Method in case of a call, an attribute in case of a default initialization.
1779 var mpropdef: MPropDef
1781 # The static type of the receiver
1782 var receiver: MClassType
1784 # Arguments of the method (the first is the receiver)
1785 var arguments: Array[RuntimeVariable]
1787 # The runtime_variable associated to the return (in a function)
1788 var returnvar: nullable RuntimeVariable = null is writable
1790 # The label at the end of the property
1791 var returnlabel: nullable String = null is writable
1793 # Labels associated to a each escapemarks.
1794 # Because of inlinings, escape-marks must be associated to their context (the frame)
1795 private var escapemark_names = new HashMap[EscapeMark, String]
1797 # The array comprehension currently filled, if any
1798 private var comprehension: nullable RuntimeVariable = null
1802 # Return the C type associated to a given Nit static type
1803 fun ctype: String do return "val*"
1805 # C type outside of the compiler code and in boxes
1806 fun ctype_extern: String do return "val*"
1808 # Short name of the `ctype
` to use in unions
1809 fun ctypename: String do return "val"
1811 # Is the associated C type a primitive one?
1813 # ENSURE `result
== (ctype
!= "val*")`
1814 fun is_c_primitive: Bool do return false
1817 redef class MClassType
1819 redef var ctype is lazy do
1820 if mclass.name == "Int" then
1822 else if mclass.name == "Bool" then
1824 else if mclass.name == "Char" then
1826 else if mclass.name == "Float" then
1828 else if mclass.name == "NativeString" then
1830 else if mclass.name == "NativeArray" then
1837 redef var is_c_primitive is lazy do return ctype != "val*"
1839 redef fun ctype_extern: String
1841 if mclass.kind == extern_kind then
1848 redef fun ctypename: String
1850 if mclass.name == "Int" then
1852 else if mclass.name == "Bool" then
1854 else if mclass.name == "Char" then
1856 else if mclass.name == "Float" then
1858 else if mclass.name == "NativeString" then
1860 else if mclass.name == "NativeArray" then
1861 #return "{self.arguments.first.ctype}*"
1869 redef class MPropDef
1870 type VISITOR: AbstractCompilerVisitor
1873 redef class MMethodDef
1874 # Can the body be inlined?
1875 fun can_inline(v: VISITOR): Bool
1877 if is_abstract then return true
1878 var modelbuilder = v.compiler.modelbuilder
1879 var node = modelbuilder.mpropdef2node(self)
1880 if node isa APropdef then
1881 return node.can_inline
1882 else if node isa AClassdef then
1883 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1890 # Inline the body in another visitor
1891 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1893 var modelbuilder = v.compiler.modelbuilder
1894 var val = constant_value
1895 var node = modelbuilder.mpropdef2node(self)
1898 var cn = v.class_name_string(arguments.first)
1899 v.current_node = node
1900 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1905 if node isa APropdef then
1906 var oldnode = v.current_node
1907 v.current_node = node
1908 self.compile_parameter_check(v, arguments)
1909 node.compile_to_c(v, self, arguments)
1910 v.current_node = oldnode
1911 else if node isa AClassdef then
1912 var oldnode = v.current_node
1913 v.current_node = node
1914 self.compile_parameter_check(v, arguments)
1915 node.compile_to_c(v, self, arguments)
1916 v.current_node = oldnode
1917 else if val != null then
1918 v.ret(v.value_instance(val))
1925 # Generate type checks in the C code to check covariant parameters
1926 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1928 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1930 for i in [0..msignature.arity[ do
1931 # skip test for vararg since the array is instantiated with the correct polymorphic type
1932 if msignature.vararg_rank == i then continue
1934 # skip if the cast is not required
1935 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1936 if not origmtype.need_anchor then continue
1938 # get the parameter type
1939 var mtype = self.msignature.mparameters[i].mtype
1942 # note that v decides if and how to implements the cast
1943 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1944 v.add_cast(arguments[i+1], mtype, "covariance")
1951 redef class APropdef
1952 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1954 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1955 debug("Not yet implemented")
1958 fun can_inline: Bool do return true
1961 redef class AMethPropdef
1962 redef fun compile_to_c(v, mpropdef, arguments)
1964 # Call the implicit super-init
1965 var auto_super_inits = self.auto_super_inits
1966 if auto_super_inits != null then
1967 var args = [arguments.first]
1968 for auto_super_init in auto_super_inits do
1969 assert auto_super_init.mproperty != mpropdef.mproperty
1971 for i in [0..auto_super_init.msignature.arity+1[ do
1972 args.add(arguments[i])
1974 assert auto_super_init.mproperty != mpropdef.mproperty
1975 v.compile_callsite(auto_super_init, args)
1978 if auto_super_call then
1979 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1982 # Try special compilation
1983 if mpropdef.is_intern then
1984 if compile_intern_to_c(v, mpropdef, arguments) then return
1985 else if mpropdef.is_extern then
1986 if mpropdef.mproperty.is_init then
1987 if compile_externinit_to_c(v, mpropdef, arguments) then return
1989 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1993 # Compile block if any
1994 var n_block = n_block
1995 if n_block != null then
1996 for i in [0..mpropdef.msignature.arity[ do
1997 var variable = self.n_signature.n_params[i].variable.as(not null)
1998 v.assign(v.variable(variable), arguments[i+1])
2005 var cn = v.class_name_string(arguments.first)
2006 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2010 redef fun can_inline
2012 if self.auto_super_inits != null then return false
2013 var nblock = self.n_block
2014 if nblock == null then return true
2015 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2016 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2020 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2022 var pname = mpropdef.mproperty.name
2023 var cname = mpropdef.mclassdef.mclass.name
2024 var ret = mpropdef.msignature.return_mtype
2026 ret = v.resolve_for(ret, arguments.first)
2028 if pname != "==" and pname != "!=" then
2029 v.adapt_signature(mpropdef, arguments)
2030 v.unbox_signature_extern(mpropdef, arguments)
2032 if cname == "Int" then
2033 if pname == "output" then
2034 v.add("printf(\"%ld\\n\", {arguments.first});")
2036 else if pname == "object_id" then
2037 v.ret(arguments.first)
2039 else if pname == "+" then
2040 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2042 else if pname == "-" then
2043 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2045 else if pname == "unary -" then
2046 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2048 else if pname == "*" then
2049 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2051 else if pname == "/" then
2052 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2054 else if pname == "%" then
2055 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2057 else if pname == "lshift" then
2058 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2060 else if pname == "rshift" then
2061 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2063 else if pname == "==" then
2064 v.ret(v.equal_test(arguments[0], arguments[1]))
2066 else if pname == "!=" then
2067 var res = v.equal_test(arguments[0], arguments[1])
2068 v.ret(v.new_expr("!{res}", ret.as(not null)))
2070 else if pname == "<" then
2071 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2073 else if pname == ">" then
2074 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2076 else if pname == "<=" then
2077 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2079 else if pname == ">=" then
2080 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2082 else if pname == "to_f" then
2083 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2085 else if pname == "ascii" then
2086 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2089 else if cname == "Char" then
2090 if pname == "output" then
2091 v.add("printf(\"%c\", {arguments.first});")
2093 else if pname == "object_id" then
2094 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2096 else if pname == "successor" then
2097 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2099 else if pname == "predecessor" then
2100 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2102 else if pname == "==" then
2103 v.ret(v.equal_test(arguments[0], arguments[1]))
2105 else if pname == "!=" then
2106 var res = v.equal_test(arguments[0], arguments[1])
2107 v.ret(v.new_expr("!{res}", 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.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2118 else if pname == ">=" then
2119 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2121 else if pname == "to_i" then
2122 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2124 else if pname == "ascii" then
2125 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2128 else if cname == "Bool" then
2129 if pname == "output" then
2130 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2132 else if pname == "object_id" then
2133 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2135 else if pname == "==" then
2136 v.ret(v.equal_test(arguments[0], arguments[1]))
2138 else if pname == "!=" then
2139 var res = v.equal_test(arguments[0], arguments[1])
2140 v.ret(v.new_expr("!{res}", ret.as(not null)))
2143 else if cname == "Float" then
2144 if pname == "output" then
2145 v.add("printf(\"%f\\n\", {arguments.first});")
2147 else if pname == "object_id" then
2148 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2150 else if pname == "+" then
2151 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2153 else if pname == "-" then
2154 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2156 else if pname == "unary -" then
2157 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2159 else if pname == "succ" then
2160 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2162 else if pname == "prec" then
2163 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2165 else if pname == "*" then
2166 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2168 else if pname == "/" then
2169 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2171 else if pname == "==" then
2172 v.ret(v.equal_test(arguments[0], arguments[1]))
2174 else if pname == "!=" then
2175 var res = v.equal_test(arguments[0], arguments[1])
2176 v.ret(v.new_expr("!{res}", ret.as(not null)))
2178 else if pname == "<" then
2179 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2181 else if pname == ">" then
2182 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2184 else if pname == "<=" then
2185 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2187 else if pname == ">=" then
2188 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2190 else if pname == "to_i" then
2191 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2194 else if cname == "NativeString" then
2195 if pname == "[]" then
2196 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2198 else if pname == "[]=" then
2199 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2201 else if pname == "copy_to" then
2202 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2204 else if pname == "atoi" then
2205 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2207 else if pname == "new" then
2208 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2211 else if cname == "NativeArray" then
2212 v.native_array_def(pname, ret, arguments)
2215 if pname == "exit" then
2216 v.add("exit({arguments[1]});")
2218 else if pname == "sys" then
2219 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2221 else if pname == "calloc_string" then
2222 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2224 else if pname == "calloc_array" then
2225 v.calloc_array(ret.as(not null), arguments)
2227 else if pname == "object_id" then
2228 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2230 else if pname == "is_same_type" then
2231 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2233 else if pname == "is_same_instance" then
2234 v.ret(v.equal_test(arguments[0], arguments[1]))
2236 else if pname == "output_class_name" then
2237 var nat = v.class_name_string(arguments.first)
2238 v.add("printf(\"%s\\n\", {nat});")
2240 else if pname == "native_class_name" then
2241 var nat = v.class_name_string(arguments.first)
2242 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2244 else if pname == "force_garbage_collection" then
2245 v.add("nit_gcollect();")
2247 else if pname == "native_argc" then
2248 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2250 else if pname == "native_argv" then
2251 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2257 # Compile an extern method
2258 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2259 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2262 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2263 if at != null and at.n_args.length == 1 then
2264 externname = at.arg_as_string(v.compiler.modelbuilder)
2265 if externname == null then return false
2269 v.add_extern(mpropdef.mclassdef.mmodule)
2270 var res: nullable RuntimeVariable = null
2271 var ret = mpropdef.msignature.return_mtype
2273 ret = v.resolve_for(ret, arguments.first)
2274 res = v.new_var_extern(ret)
2276 v.adapt_signature(mpropdef, arguments)
2277 v.unbox_signature_extern(mpropdef, arguments)
2280 v.add("{externname}({arguments.join(", ")});")
2282 v.add("{res} = {externname}({arguments.join(", ")});")
2283 res = v.box_extern(res, ret.as(not null))
2289 # Compile an extern factory
2290 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2291 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2294 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2296 externname = at.arg_as_string(v.compiler.modelbuilder)
2297 if externname == null then return false
2301 v.add_extern(mpropdef.mclassdef.mmodule)
2302 v.adapt_signature(mpropdef, arguments)
2303 v.unbox_signature_extern(mpropdef, arguments)
2304 var ret = arguments.first.mtype
2305 var res = v.new_var_extern(ret)
2309 v.add("{res} = {externname}({arguments.join(", ")});")
2310 res = v.box_extern(res, ret)
2316 redef class AAttrPropdef
2317 redef fun can_inline: Bool do return not is_lazy
2319 redef fun compile_to_c(v, mpropdef, arguments)
2321 if mpropdef == mreadpropdef then
2322 assert arguments.length == 1
2323 var recv = arguments.first
2327 var ret = self.mpropdef.static_mtype
2328 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2329 var guard = self.mlazypropdef.mproperty
2331 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2333 set = v.read_attribute(guard, recv)
2335 v.add("if(likely({set})) \{")
2336 res = v.read_attribute(self.mpropdef.mproperty, recv)
2339 var value = evaluate_expr(v, recv)
2341 v.assign(res, value)
2343 var true_v = v.bool_instance(true)
2344 v.write_attribute(guard, arguments.first, true_v)
2348 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2350 v.assign(v.frame.returnvar.as(not null), res)
2351 else if mpropdef == mwritepropdef then
2352 assert arguments.length == 2
2353 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2355 var ret = self.mpropdef.static_mtype
2356 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2358 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2366 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2368 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2371 # Evaluate, store and return the default value of the attribute
2372 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2374 var oldnode = v.current_node
2375 v.current_node = self
2376 var old_frame = v.frame
2377 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.as_notnullable.as(MClassType), [recv])
2381 var mtype = self.mpropdef.static_mtype
2382 assert mtype != null
2384 var nexpr = self.n_expr
2385 var nblock = self.n_block
2386 if nexpr != null then
2387 value = v.expr(nexpr, mtype)
2388 else if nblock != null then
2389 value = v.new_var(mtype)
2390 frame.returnvar = value
2391 frame.returnlabel = v.get_name("RET_LABEL")
2394 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2400 v.write_attribute(self.mpropdef.mproperty, recv, value)
2403 v.current_node = oldnode
2408 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2410 var nexpr = self.n_expr
2411 if nexpr != null then return
2413 var oldnode = v.current_node
2414 v.current_node = self
2415 var old_frame = v.frame
2416 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2418 # Force read to check the initialization
2419 v.read_attribute(self.mpropdef.mproperty, recv)
2421 v.current_node = oldnode
2425 redef class AClassdef
2426 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2428 if mpropdef == self.mfree_init then
2429 assert mpropdef.mproperty.is_root_init
2430 assert arguments.length == 1
2431 if not mpropdef.is_intro then
2432 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2442 # Try to compile self as an expression
2443 # Do not call this method directly, use `v
.expr
` instead
2444 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2446 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2447 var mtype = self.mtype
2448 if mtype == null then
2451 var res = v.new_var(mtype)
2452 v.add("/* {res} = NOT YET {class_name} */")
2457 # Try to compile self as a statement
2458 # Do not call this method directly, use `v
.stmt
` instead
2459 private fun stmt(v: AbstractCompilerVisitor)
2465 redef class ABlockExpr
2468 for e in self.n_expr do v.stmt(e)
2472 var last = self.n_expr.last
2473 for e in self.n_expr do
2474 if e == last then break
2477 return v.expr(last, null)
2481 redef class AVardeclExpr
2484 var variable = self.variable.as(not null)
2485 var ne = self.n_expr
2487 var i = v.expr(ne, variable.declared_type)
2488 v.assign(v.variable(variable), i)
2493 redef class AVarExpr
2496 var res = v.variable(self.variable.as(not null))
2497 var mtype = self.mtype.as(not null)
2498 return v.autoadapt(res, mtype)
2502 redef class AVarAssignExpr
2505 var variable = self.variable.as(not null)
2506 var i = v.expr(self.n_value, variable.declared_type)
2507 v.assign(v.variable(variable), i)
2512 redef class AVarReassignExpr
2515 var variable = self.variable.as(not null)
2516 var vari = v.variable(variable)
2517 var value = v.expr(self.n_value, variable.declared_type)
2518 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2520 v.assign(v.variable(variable), res)
2524 redef class ASelfExpr
2525 redef fun expr(v) do return v.frame.arguments.first
2528 redef class AEscapeExpr
2529 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2532 redef class AReturnExpr
2535 var nexpr = self.n_expr
2536 if nexpr != null then
2537 var returnvar = v.frame.returnvar.as(not null)
2538 var i = v.expr(nexpr, returnvar.mtype)
2539 v.assign(returnvar, i)
2541 v.add("goto {v.frame.returnlabel.as(not null)};")
2545 redef class AAbortExpr
2546 redef fun stmt(v) do v.add_abort("Aborted")
2552 var cond = v.expr_bool(self.n_expr)
2553 v.add("if ({cond})\{")
2562 var res = v.new_var(self.mtype.as(not null))
2563 var cond = v.expr_bool(self.n_expr)
2564 v.add("if ({cond})\{")
2565 v.assign(res, v.expr(self.n_then.as(not null), null))
2567 v.assign(res, v.expr(self.n_else.as(not null), null))
2573 redef class AIfexprExpr
2576 var res = v.new_var(self.mtype.as(not null))
2577 var cond = v.expr_bool(self.n_expr)
2578 v.add("if ({cond})\{")
2579 v.assign(res, v.expr(self.n_then, null))
2581 v.assign(res, v.expr(self.n_else, null))
2590 v.stmt(self.n_block)
2591 v.add_escape_label(break_mark)
2595 redef class AWhileExpr
2599 var cond = v.expr_bool(self.n_expr)
2600 v.add("if (!{cond}) break;")
2601 v.stmt(self.n_block)
2602 v.add_escape_label(continue_mark)
2604 v.add_escape_label(break_mark)
2608 redef class ALoopExpr
2612 v.stmt(self.n_block)
2613 v.add_escape_label(continue_mark)
2615 v.add_escape_label(break_mark)
2619 redef class AForExpr
2622 var cl = v.expr(self.n_expr, null)
2623 var it_meth = self.method_iterator
2624 assert it_meth != null
2625 var it = v.compile_callsite(it_meth, [cl])
2628 var isok_meth = self.method_is_ok
2629 assert isok_meth != null
2630 var ok = v.compile_callsite(isok_meth, [it])
2632 v.add("if(!{ok}) break;")
2633 if self.variables.length == 1 then
2634 var item_meth = self.method_item
2635 assert item_meth != null
2636 var i = v.compile_callsite(item_meth, [it])
2638 v.assign(v.variable(variables.first), i)
2639 else if self.variables.length == 2 then
2640 var key_meth = self.method_key
2641 assert key_meth != null
2642 var i = v.compile_callsite(key_meth, [it])
2644 v.assign(v.variable(variables[0]), i)
2645 var item_meth = self.method_item
2646 assert item_meth != null
2647 i = v.compile_callsite(item_meth, [it])
2649 v.assign(v.variable(variables[1]), i)
2653 v.stmt(self.n_block)
2654 v.add_escape_label(continue_mark)
2655 var next_meth = self.method_next
2656 assert next_meth != null
2657 v.compile_callsite(next_meth, [it])
2659 v.add_escape_label(break_mark)
2661 var method_finish = self.method_finish
2662 if method_finish != null then
2663 # TODO: Find a way to call this also in long escape (e.g. return)
2664 v.compile_callsite(method_finish, [it])
2669 redef class AAssertExpr
2672 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2674 var cond = v.expr_bool(self.n_expr)
2675 v.add("if (unlikely(!{cond})) \{")
2679 v.add_abort("Assert '{nid.text}' failed")
2681 v.add_abort("Assert failed")
2690 var res = v.new_var(self.mtype.as(not null))
2691 var i1 = v.expr_bool(self.n_expr)
2692 v.add("if ({i1}) \{")
2695 var i2 = v.expr_bool(self.n_expr2)
2696 v.add("{res} = {i2};")
2702 redef class AImpliesExpr
2705 var res = v.new_var(self.mtype.as(not null))
2706 var i1 = v.expr_bool(self.n_expr)
2707 v.add("if (!{i1}) \{")
2710 var i2 = v.expr_bool(self.n_expr2)
2711 v.add("{res} = {i2};")
2717 redef class AAndExpr
2720 var res = v.new_var(self.mtype.as(not null))
2721 var i1 = v.expr_bool(self.n_expr)
2722 v.add("if (!{i1}) \{")
2725 var i2 = v.expr_bool(self.n_expr2)
2726 v.add("{res} = {i2};")
2732 redef class ANotExpr
2735 var cond = v.expr_bool(self.n_expr)
2736 return v.new_expr("!{cond}", self.mtype.as(not null))
2740 redef class AOrElseExpr
2743 var res = v.new_var(self.mtype.as(not null))
2744 var i1 = v.expr(self.n_expr, null)
2745 v.add("if ({i1}!=NULL) \{")
2748 var i2 = v.expr(self.n_expr2, null)
2755 redef class AIntExpr
2756 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2759 redef class AFloatExpr
2760 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2763 redef class ACharExpr
2764 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2767 redef class AArrayExpr
2770 var mtype = self.element_mtype.as(not null)
2771 var array = new Array[RuntimeVariable]
2772 var res = v.array_instance(array, mtype)
2774 var old_comprehension = v.frame.comprehension
2775 v.frame.comprehension = res
2776 for nexpr in self.n_exprs do
2779 v.frame.comprehension = old_comprehension
2785 redef class AStringFormExpr
2786 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2789 redef class ASuperstringExpr
2792 var type_string = mtype.as(not null)
2794 # Collect elements of the superstring
2795 var array = new Array[AExpr]
2796 for ne in self.n_exprs do
2797 # Drop literal empty string.
2798 # They appears in things like "{a}" that is ["", a, ""]
2799 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2803 # Store the allocated native array in a static variable
2805 var varonce = v.get_name("varonce")
2806 v.add("if (unlikely({varonce}==NULL)) \{")
2808 # The native array that will contains the elements to_s-ized.
2809 # For fast concatenation.
2810 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2812 v.add_decl("static {a.mtype.ctype} {varonce};")
2814 # Pre-fill the array with the literal string parts.
2815 # So they do not need to be filled again when reused
2816 for i in [0..array.length[ do
2818 if not ne isa AStringFormExpr then continue
2819 var e = v.expr(ne, null)
2820 v.native_array_set(a, i, e)
2824 # Take the native-array from the store.
2825 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2826 # WARNING: not thread safe! (FIXME?)
2827 v.add("{a} = {varonce};")
2828 v.add("{varonce} = NULL;")
2831 # Stringify the elements and put them in the native array
2832 var to_s_method = v.get_property("to_s", v.object_type)
2833 for i in [0..array.length[ do
2835 if ne isa AStringFormExpr then continue
2836 var e = v.expr(ne, null)
2837 # Skip the `to_s
` if the element is already a String
2838 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2839 e = v.send(to_s_method, [e]).as(not null)
2841 v.native_array_set(a, i, e)
2844 # Fast join the native string to get the result
2845 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2847 # We finish to work with the native array,
2848 # so store it so that it can be reused
2849 v.add("{varonce} = {a};")
2854 redef class ACrangeExpr
2857 var i1 = v.expr(self.n_expr, null)
2858 var i2 = v.expr(self.n_expr2, null)
2859 var mtype = self.mtype.as(MClassType)
2860 var res = v.init_instance(mtype)
2861 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2866 redef class AOrangeExpr
2869 var i1 = v.expr(self.n_expr, null)
2870 var i2 = v.expr(self.n_expr2, null)
2871 var mtype = self.mtype.as(MClassType)
2872 var res = v.init_instance(mtype)
2873 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2878 redef class ATrueExpr
2879 redef fun expr(v) do return v.bool_instance(true)
2882 redef class AFalseExpr
2883 redef fun expr(v) do return v.bool_instance(false)
2886 redef class ANullExpr
2887 redef fun expr(v) do return v.null_instance
2890 redef class AIsaExpr
2893 var i = v.expr(self.n_expr, null)
2894 return v.type_test(i, self.cast_type.as(not null), "isa")
2898 redef class AAsCastExpr
2901 var i = v.expr(self.n_expr, null)
2902 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2904 v.add_cast(i, self.mtype.as(not null), "as")
2909 redef class AAsNotnullExpr
2912 var i = v.expr(self.n_expr, null)
2913 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2915 if i.mtype.is_c_primitive then return i
2917 v.add("if (unlikely({i} == NULL)) \{")
2918 v.add_abort("Cast failed")
2924 redef class AParExpr
2925 redef fun expr(v) do return v.expr(self.n_expr, null)
2928 redef class AOnceExpr
2931 var mtype = self.mtype.as(not null)
2932 var name = v.get_name("varonce")
2933 var guard = v.get_name(name + "_guard")
2934 v.add_decl("static {mtype.ctype} {name};")
2935 v.add_decl("static int {guard};")
2936 var res = v.new_var(mtype)
2937 v.add("if (likely({guard})) \{")
2938 v.add("{res} = {name};")
2940 var i = v.expr(self.n_expr, mtype)
2941 v.add("{res} = {i};")
2942 v.add("{name} = {res};")
2943 v.add("{guard} = 1;")
2949 redef class ASendExpr
2952 var recv = v.expr(self.n_expr, null)
2953 var callsite = self.callsite.as(not null)
2954 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2955 return v.compile_callsite(callsite, args)
2959 redef class ASendReassignFormExpr
2962 var recv = v.expr(self.n_expr, null)
2963 var callsite = self.callsite.as(not null)
2964 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2966 var value = v.expr(self.n_value, null)
2968 var left = v.compile_callsite(callsite, args)
2971 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2975 v.compile_callsite(self.write_callsite.as(not null), args)
2979 redef class ASuperExpr
2982 var recv = v.frame.arguments.first
2984 var callsite = self.callsite
2985 if callsite != null then
2986 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
2988 # Add additional arguments for the super init call
2989 if args.length == 1 then
2990 for i in [0..callsite.msignature.arity[ do
2991 args.add(v.frame.arguments[i+1])
2995 var res = v.compile_callsite(callsite, args)
2999 var mpropdef = self.mpropdef.as(not null)
3000 var args = v.varargize(mpropdef, recv, self.n_args.n_exprs)
3001 if args.length == 1 then
3002 args = v.frame.arguments
3005 # stantard call-next-method
3006 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3010 redef class ANewExpr
3013 var mtype = self.recvtype
3014 assert mtype != null
3016 if mtype.mclass.name == "NativeArray" then
3017 assert self.n_args.n_exprs.length == 1
3018 var l = v.expr(self.n_args.n_exprs.first, null)
3019 assert mtype isa MGenericType
3020 var elttype = mtype.arguments.first
3021 return v.native_array_instance(elttype, l)
3024 var recv = v.init_instance_or_extern(mtype)
3026 var callsite = self.callsite.as(not null)
3027 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
3028 var res2 = v.compile_callsite(callsite, args)
3029 if res2 != null then
3030 #self.debug("got {res2} from {mproperty}. drop {recv}")
3037 redef class AAttrExpr
3040 var recv = v.expr(self.n_expr, null)
3041 var mproperty = self.mproperty.as(not null)
3042 return v.read_attribute(mproperty, recv)
3046 redef class AAttrAssignExpr
3049 var recv = v.expr(self.n_expr, null)
3050 var i = v.expr(self.n_value, null)
3051 var mproperty = self.mproperty.as(not null)
3052 v.write_attribute(mproperty, recv, i)
3057 redef class AAttrReassignExpr
3060 var recv = v.expr(self.n_expr, null)
3061 var value = v.expr(self.n_value, null)
3062 var mproperty = self.mproperty.as(not null)
3063 var attr = v.read_attribute(mproperty, recv)
3064 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3066 v.write_attribute(mproperty, recv, res)
3070 redef class AIssetAttrExpr
3073 var recv = v.expr(self.n_expr, null)
3074 var mproperty = self.mproperty.as(not null)
3075 return v.isset_attribute(mproperty, recv)
3079 redef class ADebugTypeExpr
3088 redef class Array[E]
3089 # Return a new `Array` with the elements only contened in self and not in `o
`
3090 fun -(o: Array[E]): Array[E] do
3091 var res = new Array[E]
3092 for e in self do if not o.has(e) then res.add(e)
3098 # All `MProperty` associated to all `MClassDef` of `mclass
`
3099 fun properties(mclass: MClass): Set[MProperty] do
3100 if not self.properties_cache.has_key(mclass) then
3101 var properties = new HashSet[MProperty]
3102 var parents = new Array[MClass]
3103 if self.flatten_mclass_hierarchy.has(mclass) then
3104 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3106 for parent in parents do
3107 properties.add_all(self.properties(parent))
3109 for mclassdef in mclass.mclassdefs do
3110 if not self.in_importation <= mclassdef.mmodule then continue
3111 for mprop in mclassdef.intro_mproperties do
3112 properties.add(mprop)
3115 self.properties_cache[mclass] = properties
3117 return properties_cache[mclass]
3119 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3121 # Write FFI and nitni results to file
3122 fun finalize_ffi(c: AbstractCompiler) do end
3124 # Give requided addinional system libraries (as given to LD_LIBS)
3125 # Note: can return null instead of an empty set
3126 fun collect_linker_libs: nullable Array[String] do return null
3129 # Create a tool context to handle options and paths
3130 var toolcontext = new ToolContext
3132 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3134 # We do not add other options, so process them now!
3135 toolcontext.process_options(args)
3137 # We need a model to collect stufs
3138 var model = new Model
3139 # An a model builder to parse files
3140 var modelbuilder = new ModelBuilder(model, toolcontext)
3142 var arguments = toolcontext.option_context.rest
3143 if arguments.length > 1 and toolcontext.opt_output.value != null then
3144 print "Error: --output needs a single source file. Do you prefer --dir?"
3148 # Here we load an process all modules passed on the command line
3149 var mmodules = modelbuilder.parse(arguments)
3151 if mmodules.is_empty then return
3152 modelbuilder.run_phases
3154 for mmodule in mmodules do
3155 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3157 toolcontext.run_global_phases(ms)