1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 module abstract_compiler
24 private import annotation
27 # Add compiling options
28 redef class ToolContext
30 var opt_output
= new OptionString("Output file", "-o", "--output")
32 var opt_dir
= new OptionString("Output directory", "--dir")
34 var opt_no_cc
= new OptionBool("Do not invoke C compiler", "--no-cc")
36 var opt_no_main
= new OptionBool("Do not generate main entry point", "--no-main")
38 var opt_make_flags
= new OptionString("Additional options to make", "--make-flags")
40 var opt_max_c_lines
= new OptionInt("Maximum number of lines in generated C files. Use 0 for unlimited", 10000, "--max-c-lines")
42 var opt_group_c_files
= new OptionBool("Group all generated code in the same series of files", "--group-c-files")
44 var opt_compile_dir
= new OptionString("Directory used to generate temporary files", "--compile-dir")
46 var opt_hardening
= new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
47 # --no-check-covariance
48 var opt_no_check_covariance
= new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
49 # --no-check-attr-isset
50 var opt_no_check_attr_isset
= new OptionBool("Disable isset tests before each attribute access (dangerous)", "--no-check-attr-isset")
52 var opt_no_check_assert
= new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
54 var opt_no_check_autocast
= new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
56 var opt_no_check_null
= new OptionBool("Disable tests of null receiver (dangerous)", "--no-check-null")
58 var opt_no_check_all
= new OptionBool("Disable all tests (dangerous)", "--no-check-all")
59 # --typing-test-metrics
60 var opt_typing_test_metrics
= new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
61 # --invocation-metrics
62 var opt_invocation_metrics
= new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
63 # --isset-checks-metrics
64 var opt_isset_checks_metrics
= new OptionBool("Enable static and dynamic count of isset checks before attributes access", "--isset-checks-metrics")
66 var opt_stacktrace
= new OptionString("Control the generation of stack traces", "--stacktrace")
68 var opt_no_gcc_directive
= new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
70 var opt_release
= new OptionBool("Compile in release mode and finalize application", "--release")
75 self.option_context
.add_option
(self.opt_output
, self.opt_dir
, self.opt_no_cc
, self.opt_no_main
, self.opt_make_flags
, self.opt_compile_dir
, self.opt_hardening
)
76 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_attr_isset
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_null
, self.opt_no_check_all
)
77 self.option_context
.add_option
(self.opt_typing_test_metrics
, self.opt_invocation_metrics
, self.opt_isset_checks_metrics
)
78 self.option_context
.add_option
(self.opt_stacktrace
)
79 self.option_context
.add_option
(self.opt_no_gcc_directive
)
80 self.option_context
.add_option
(self.opt_release
)
81 self.option_context
.add_option
(self.opt_max_c_lines
, self.opt_group_c_files
)
83 opt_no_main
.hidden
= true
86 redef fun process_options
(args
)
90 var st
= opt_stacktrace
.value
91 if st
== "none" or st
== "libunwind" or st
== "nitstack" then
93 else if st
== "auto" or st
== null then
95 opt_stacktrace
.value
= "nitstack"
97 print
"Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `nitstack` or `auto`."
101 if opt_output
.value
!= null and opt_dir
.value
!= null then
102 print
"Error: cannot use both --dir and --output"
106 if opt_no_check_all
.value
then
107 opt_no_check_covariance
.value
= true
108 opt_no_check_attr_isset
.value
= true
109 opt_no_check_assert
.value
= true
110 opt_no_check_autocast
.value
= true
111 opt_no_check_null
.value
= true
116 redef class ModelBuilder
117 # The compilation directory
118 var compile_dir
: String
120 # Simple indirection to `Toolchain::write_and_make`
121 protected fun write_and_make
(compiler
: AbstractCompiler)
123 var platform
= compiler
.target_platform
124 var toolchain
= platform
.toolchain
(toolcontext
, compiler
)
125 compile_dir
= toolchain
.compile_dir
126 toolchain
.write_and_make
131 # The specific tool-chain associated to the platform
132 fun toolchain
(toolcontext
: ToolContext, compiler
: AbstractCompiler): Toolchain
134 return new MakefileToolchain(toolcontext
, compiler
)
138 # Build toolchain for a specific target program, varies per `Platform`
142 var toolcontext
: ToolContext
144 # Compiler of the target program
145 var compiler
: AbstractCompiler
147 # Directory where to generate all C files
148 fun compile_dir
: String
150 var compile_dir
= toolcontext
.opt_compile_dir
.value
151 if compile_dir
== null then compile_dir
= ".nit_compile"
155 # Write all C files and compile them
156 fun write_and_make
is abstract
159 # Default toolchain using a Makefile
160 class MakefileToolchain
163 redef fun write_and_make
165 var compile_dir
= compile_dir
167 # Generate the .h and .c files
168 # A single C file regroups many compiled rumtime functions
169 # 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
171 self.toolcontext
.info
("*** WRITING C ***", 1)
175 var cfiles
= new Array[String]
176 write_files
(compile_dir
, cfiles
)
178 # Generate the Makefile
180 write_makefile
(compile_dir
, cfiles
)
183 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
185 # Execute the Makefile
187 if self.toolcontext
.opt_no_cc
.value
then return
190 self.toolcontext
.info
("*** COMPILING C ***", 1)
192 compile_c_code
(compile_dir
)
195 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
198 # Write all source files to the `compile_dir`
199 fun write_files
(compile_dir
: String, cfiles
: Array[String])
201 var platform
= compiler
.target_platform
202 if self.toolcontext
.opt_stacktrace
.value
== "nitstack" and platform
.supports_libunwind
then compiler
.build_c_to_nit_bindings
203 var cc_opt_with_libgc
= "-DWITH_LIBGC"
204 if not platform
.supports_libgc
then cc_opt_with_libgc
= ""
206 # Add gc_choser.h to aditionnal bodies
207 var gc_chooser
= new ExternCFile("gc_chooser.c", cc_opt_with_libgc
)
208 if cc_opt_with_libgc
!= "" then gc_chooser
.pkgconfigs
.add
"bdw-gc"
209 compiler
.extern_bodies
.add
(gc_chooser
)
210 var clib
= toolcontext
.nit_dir
/ "clib"
211 compiler
.files_to_copy
.add
"{clib}/gc_chooser.c"
212 compiler
.files_to_copy
.add
"{clib}/gc_chooser.h"
215 for m
in compiler
.mainmodule
.in_importation
.greaters
do
216 compiler
.finalize_ffi_for_module
(m
)
219 # Copy original .[ch] files to compile_dir
220 for src
in compiler
.files_to_copy
do
221 var basename
= src
.basename
("")
222 var dst
= "{compile_dir}/{basename}"
226 var hfilename
= compiler
.header
.file
.name
+ ".h"
227 var hfilepath
= "{compile_dir}/{hfilename}"
228 var h
= new FileWriter.open
(hfilepath
)
229 for l
in compiler
.header
.decl_lines
do
233 for l
in compiler
.header
.lines
do
239 var max_c_lines
= toolcontext
.opt_max_c_lines
.value
240 for f
in compiler
.files
do
243 var file
: nullable FileWriter = null
244 for vis
in f
.writers
do
245 if vis
== compiler
.header
then continue
246 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
247 if total_lines
== 0 then continue
249 if file
== null or (count
> max_c_lines
and max_c_lines
> 0) then
251 if file
!= null then file
.close
252 var cfilename
= "{f.name}.{i}.c"
253 var cfilepath
= "{compile_dir}/{cfilename}"
254 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
255 cfiles
.add
(cfilename
)
256 file
= new FileWriter.open
(cfilepath
)
257 file
.write
"#include \"{f.name}.0.h\
"\n"
260 for l
in vis
.decl_lines
do
264 for l
in vis
.lines
do
269 if file
== null then continue
272 var cfilename
= "{f.name}.0.h"
273 var cfilepath
= "{compile_dir}/{cfilename}"
274 var hfile
: nullable FileWriter = null
275 hfile
= new FileWriter.open
(cfilepath
)
276 hfile
.write
"#include \"{hfilename}\
"\n"
277 for key
in f
.required_declarations
do
278 if not compiler
.provided_declarations
.has_key
(key
) then
279 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
281 node
.debug
"No provided declaration for {key}"
283 print
"No provided declaration for {key}"
287 hfile
.write compiler
.provided_declarations
[key
]
293 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
296 # Get the name of the Makefile to use
297 fun makefile_name
: String do return "{compiler.mainmodule.c_name}.mk"
299 # Get the default name of the executable to produce
300 fun default_outname
: String
302 var mainmodule
= compiler
.mainmodule
304 # Search a non fictive module
305 var res
= mainmodule
.name
306 while mainmodule
.is_fictive
do
307 mainmodule
= mainmodule
.in_importation
.direct_greaters
.first
308 res
= mainmodule
.name
313 # Combine options and platform informations to get the final path of the outfile
314 fun outfile
(mainmodule
: MModule): String
316 var res
= self.toolcontext
.opt_output
.value
317 if res
!= null then return res
318 res
= default_outname
319 var dir
= self.toolcontext
.opt_dir
.value
320 if dir
!= null then return dir
.join_path
(res
)
325 fun write_makefile
(compile_dir
: String, cfiles
: Array[String])
327 var mainmodule
= compiler
.mainmodule
328 var platform
= compiler
.target_platform
330 var outname
= outfile
(mainmodule
)
332 var real_outpath
= compile_dir
.relpath
(outname
)
333 var outpath
= real_outpath
.escape_to_mk
334 if outpath
!= real_outpath
then
335 # If the name is crazy and need escaping, we will do an indirection
336 # 1. generate the binary in the .nit_compile dir under an escaped name
337 # 2. copy the binary at the right place in the `all` goal.
338 outpath
= mainmodule
.c_name
340 var makename
= makefile_name
341 var makepath
= "{compile_dir}/{makename}"
342 var makefile
= new FileWriter.open
(makepath
)
344 var linker_options
= new HashSet[String]
345 for m
in mainmodule
.in_importation
.greaters
do
346 var libs
= m
.collect_linker_libs
347 if libs
!= null then linker_options
.add_all
(libs
)
350 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")
352 var ost
= toolcontext
.opt_stacktrace
.value
353 if (ost
== "libunwind" or ost
== "nitstack") and platform
.supports_libunwind
then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
355 # Dynamic adaptations
356 # While `platform` enable complex toolchains, they are statically applied
357 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
359 # Check and adapt the targeted system
360 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
361 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
362 # remove -lunwind since it is already included on macosx
363 makefile
.write
("\tNEED_LIBUNWIND :=\n")
364 makefile
.write
("endif\n\n")
366 # Check and adapt for the compiler used
367 # clang need an additionnal `-Qunused-arguments`
368 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
370 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
372 makefile
.write
("all: {outpath}\n")
373 if outpath
!= real_outpath
then
374 makefile
.write
("\tcp -- {outpath.escape_to_sh} {real_outpath.escape_to_sh.replace("$","$$")}")
378 var ofiles
= new Array[String]
379 var dep_rules
= new Array[String]
380 # Compile each generated file
382 var o
= f
.strip_extension
(".c") + ".o"
383 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
388 # Generate linker script, if any
389 if not compiler
.linker_script
.is_empty
then
390 var linker_script_path
= "{compile_dir}/linker_script"
391 ofiles
.add
"linker_script"
392 var f
= new FileWriter.open
(linker_script_path
)
393 for l
in compiler
.linker_script
do
400 var java_files
= new Array[ExternFile]
402 var pkgconfigs
= new Array[String]
403 for f
in compiler
.extern_bodies
do
404 pkgconfigs
.add_all f
.pkgconfigs
407 if not pkgconfigs
.is_empty
then
409 # does pkg-config exists?
410 ifneq ($(shell which pkg-config >/dev/null; echo $$?), 0)
411 $(error "Command `pkg-config` not found. Please install it")
414 for p
in pkgconfigs
do
416 # Check for library {{{p}}}
417 ifneq ($(shell pkg-config --exists '{{{p}}}'; echo $$?), 0)
418 $(error "pkg-config: package {{{p}}} is not found.")
424 # Compile each required extern body into a specific .o
425 for f
in compiler
.extern_bodies
do
426 var o
= f
.makefile_rule_name
427 var ff
= f
.filename
.basename
("")
428 makefile
.write
("{o}: {ff}\n")
429 makefile
.write
("\t{f.makefile_rule_content}\n\n")
430 dep_rules
.add
(f
.makefile_rule_name
)
432 if f
.compiles_to_o_file
then ofiles
.add
(o
)
433 if f
.add_to_jar
then java_files
.add
(f
)
436 if not java_files
.is_empty
then
437 var jar_file
= "{outpath}.jar"
439 var class_files_array
= new Array[String]
440 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
441 var class_files
= class_files_array
.join
(" ")
443 makefile
.write
("{jar_file}: {class_files}\n")
444 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
445 dep_rules
.add jar_file
450 if not pkgconfigs
.is_empty
then
451 pkg
= "`pkg-config --libs {pkgconfigs.join(" ")}`"
453 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath.escape_to_sh} {ofiles.join(" ")} $(LDLIBS) {pkg}\n\n")
455 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n")
456 if outpath
!= real_outpath
then
457 makefile
.write
("\trm -- {outpath.escape_to_sh} 2>/dev/null\n")
460 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
462 makepath
.file_copy_to
"{compile_dir}/Makefile"
465 # The C code is generated, compile it to an executable
466 fun compile_c_code
(compile_dir
: String)
468 var makename
= makefile_name
470 var makeflags
= self.toolcontext
.opt_make_flags
.value
471 if makeflags
== null then makeflags
= ""
472 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
475 if self.toolcontext
.verbose_level
>= 3 then
476 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
478 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
481 toolcontext
.error
(null, "make failed! Error code: {res}.")
486 # Singleton that store the knowledge about the compilation process
487 abstract class AbstractCompiler
488 type VISITOR: AbstractCompilerVisitor
490 # Table corresponding c_names to nit names (methods)
491 var names
= new HashMap[String, String]
493 # The main module of the program currently compiled
494 # Is assigned during the separate compilation
495 var mainmodule
: MModule is writable
497 # The real main module of the program
498 var realmainmodule
: MModule is noinit
500 # The modelbuilder used to know the model and the AST
501 var modelbuilder
: ModelBuilder is protected writable
503 # Is hardening asked? (see --hardening)
504 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
506 # The targeted specific platform
507 var target_platform
: Platform is noinit
511 self.realmainmodule
= mainmodule
512 target_platform
= mainmodule
.target_platform
or else new Platform
515 # Do the full code generation of the program `mainmodule`
516 # It is the main method usually called after the instantiation
517 fun do_compilation
is abstract
519 # Force the creation of a new file
520 # The point is to avoid contamination between must-be-compiled-separately files
521 fun new_file
(name
: String): CodeFile
523 if modelbuilder
.toolcontext
.opt_group_c_files
.value
then
524 if self.files
.is_empty
then
525 var f
= new CodeFile(mainmodule
.c_name
)
528 return self.files
.first
530 var f
= new CodeFile(name
)
535 # The list of all associated files
536 # Used to generate .c files
537 var files
= new List[CodeFile]
539 # Initialize a visitor specific for a compiler engine
540 fun new_visitor
: VISITOR is abstract
542 # Where global declaration are stored (the main .h)
543 var header
: CodeWriter is writable, noinit
545 # Additionnal linker script for `ld`.
546 # Mainly used to do specific link-time symbol resolution
547 var linker_script
= new Array[String]
549 # Provide a declaration that can be requested (before or latter) by a visitor
550 fun provide_declaration
(key
: String, s
: String)
552 if self.provided_declarations
.has_key
(key
) then
553 assert self.provided_declarations
[key
] == s
555 self.provided_declarations
[key
] = s
558 private var provided_declarations
= new HashMap[String, String]
560 private var requirers_of_declarations
= new HashMap[String, ANode]
562 # Builds the .c and .h files to be used when generating a Stack Trace
563 # Binds the generated C function names to Nit function names
564 fun build_c_to_nit_bindings
566 var compile_dir
= modelbuilder
.compile_dir
568 var stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.c")
569 stream
.write
("#include <string.h>\n")
570 stream
.write
("#include <stdlib.h>\n")
571 stream
.write
("#include \"c_functions_hash
.h\
"\n")
572 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
573 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
574 stream
.write
("char* procname = malloc(len+1);")
575 stream
.write
("memcpy(procname, procproc, len);")
576 stream
.write
("procname[len] = '\\0';")
577 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
578 for i
in names
.keys
do
580 stream.write(i.escape_to_c)
581 stream.write("\
",\"")
582 stream.write(names[i].escape_to_c)
583 stream.write("\
"\},\n")
585 stream
.write
("\};\n")
586 stream
.write
("int i;")
587 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
588 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
589 stream
.write
("free(procname);")
590 stream
.write
("return map[i].nit_name;")
593 stream
.write
("free(procname);")
594 stream
.write
("return NULL;")
598 stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.h")
599 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
602 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
606 # This method call compile_header_strucs method that has to be refined
607 fun compile_header
do
608 self.header
.add_decl
("#include <stdlib.h>")
609 self.header
.add_decl
("#include <stdio.h>")
610 self.header
.add_decl
("#include <string.h>")
611 self.header
.add_decl
("#include <sys/types.h>\n")
612 self.header
.add_decl
("#include <unistd.h>\n")
613 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
614 self.header
.add_decl
("#ifdef ANDROID")
615 self.header
.add_decl
(" #include <android/log.h>")
616 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
617 self.header
.add_decl
("#else")
618 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
619 self.header
.add_decl
("#endif")
621 compile_header_structs
622 compile_nitni_structs
624 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
625 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
626 # Signal handler function prototype
627 self.header
.add_decl
("void fatal_exit(int);")
629 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
632 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
633 self.header
.add_decl
("#define likely(x) (x)")
634 self.header
.add_decl
("#define unlikely(x) (x)")
635 else if gccd_disable
.has
("correct-likely") then
636 # invert the `likely` definition
637 # Used by masochists to bench the worst case
638 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
639 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
641 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
642 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
645 # Global variable used by intern methods
646 self.header
.add_decl
("extern int glob_argc;")
647 self.header
.add_decl
("extern char **glob_argv;")
648 self.header
.add_decl
("extern val *glob_sys;")
651 # Declaration of structures for live Nit types
652 protected fun compile_header_structs
is abstract
654 # Declaration of structures for nitni undelying the FFI
655 protected fun compile_nitni_structs
657 self.header
.add_decl
"""
658 /* Native reference to Nit objects */
659 /* This structure is used to represent every Nit type in extern methods and custom C code. */
661 struct nitni_ref *next,
662 *prev; /* adjacent global references in global list */
663 int count; /* number of time this global reference has been marked */
666 /* List of global references from C code to Nit objects */
667 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
668 struct nitni_global_ref_list_t {
669 struct nitni_ref *head, *tail;
671 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
673 /* Initializer of global reference list */
674 extern void nitni_global_ref_list_init();
676 /* Intern function to add a global reference to the list */
677 extern void nitni_global_ref_add( struct nitni_ref *ref );
679 /* Intern function to remove a global reference from the list */
680 extern void nitni_global_ref_remove( struct nitni_ref *ref );
682 /* Increase count on an existing global reference */
683 extern void nitni_global_ref_incr( struct nitni_ref *ref );
685 /* Decrease count on an existing global reference */
686 extern void nitni_global_ref_decr( struct nitni_ref *ref );
690 fun compile_finalizer_function
692 var finalizable_type
= mainmodule
.finalizable_type
693 if finalizable_type
== null then return
695 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
697 if finalize_meth
== null then
698 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
702 var v
= self.new_visitor
703 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
704 var recv
= v
.new_expr
("obj", finalizable_type
)
705 v
.send
(finalize_meth
, [recv
])
709 # Generate the main C function.
713 # * allocate the Sys object if it exists
714 # * call init if is exists
715 # * call main if it exists
716 fun compile_main_function
718 var v
= self.new_visitor
719 v
.add_decl
("#include <signal.h>")
720 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
721 var platform
= target_platform
723 if not platform
.supports_libunwind
then ost
= "none"
725 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
727 if ost
== "nitstack" or ost
== "libunwind" then
728 v
.add_decl
("#define UNW_LOCAL_ONLY")
729 v
.add_decl
("#include <libunwind.h>")
730 if ost
== "nitstack" then
731 v
.add_decl
("#include \"c_functions_hash
.h\
"")
734 v
.add_decl
("int glob_argc;")
735 v
.add_decl
("char **glob_argv;")
736 v
.add_decl
("val *glob_sys;")
738 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
739 for tag
in count_type_test_tags
do
740 v
.add_decl
("long count_type_test_resolved_{tag};")
741 v
.add_decl
("long count_type_test_unresolved_{tag};")
742 v
.add_decl
("long count_type_test_skipped_{tag};")
743 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
744 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
745 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
749 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
750 v
.add_decl
("long count_invoke_by_tables;")
751 v
.add_decl
("long count_invoke_by_direct;")
752 v
.add_decl
("long count_invoke_by_inline;")
753 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
754 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
755 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
758 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
759 v
.add_decl
("long count_attr_reads = 0;")
760 v
.add_decl
("long count_isset_checks = 0;")
761 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
762 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
765 v
.add_decl
("static void show_backtrace(void) \{")
766 if ost
== "nitstack" or ost
== "libunwind" then
767 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
768 v
.add_decl
("unw_cursor_t cursor;")
769 v
.add_decl
("if(opt==NULL)\{")
770 v
.add_decl
("unw_context_t uc;")
771 v
.add_decl
("unw_word_t ip;")
772 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
773 v
.add_decl
("unw_getcontext(&uc);")
774 v
.add_decl
("unw_init_local(&cursor, &uc);")
775 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
776 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
777 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
778 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
779 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
780 if ost
== "nitstack" then
781 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
782 v
.add_decl
(" if (recv != NULL)\{")
783 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
784 v.add_decl(" \}else\{")
785 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
788 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
791 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
792 v.add_decl("free(procname);")
797 v.add_decl("void sig_handler(int signo)\{")
798 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
799 v.add_decl("show_backtrace();")
801 v.add_decl("signal(signo, SIG_DFL);")
802 v.add_decl("kill(getpid(), signo);")
805 v.add_decl("void fatal_exit(int status) \{")
806 v.add_decl("show_backtrace();")
807 v.add_decl("exit(status);")
811 v.add_decl("int nit_main(int argc, char** argv) \{")
813 v.add_decl("int main(int argc, char** argv) \{")
816 v.add("signal(SIGABRT, sig_handler);")
817 v.add("signal(SIGFPE, sig_handler);")
818 v.add("signal(SIGILL, sig_handler);")
819 v.add("signal(SIGINT, sig_handler);")
820 v.add("signal(SIGTERM, sig_handler);")
821 v.add("signal(SIGSEGV, sig_handler);")
822 v.add("signal(SIGPIPE, sig_handler);")
824 v.add("glob_argc = argc; glob_argv = argv;")
825 v.add("initialize_gc_option();")
827 v.add "initialize_nitni_global_refs();"
829 var main_type = mainmodule.sys_type
830 if main_type != null then
831 var mainmodule = v.compiler.mainmodule
832 var glob_sys = v.init_instance(main_type)
833 v.add("glob_sys = {glob_sys};")
834 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
835 if main_init != null then
836 v.send(main_init, [glob_sys])
838 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
839 mainmodule.try_get_primitive_method("main", main_type.mclass)
840 if main_method != null then
841 v.send(main_method, [glob_sys])
845 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
846 v.add_decl("long count_type_test_resolved_total = 0;")
847 v.add_decl("long count_type_test_unresolved_total = 0;")
848 v.add_decl("long count_type_test_skipped_total = 0;")
849 v.add_decl("long count_type_test_total_total = 0;")
850 for tag in count_type_test_tags do
851 v.add_decl("long count_type_test_total_{tag};")
852 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
853 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
854 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
855 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
856 v.add("count_type_test_total_total += count_type_test_total_{tag};")
858 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
859 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
860 var tags = count_type_test_tags.to_a
863 v.add("printf(\"{tag}\");")
864 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
865 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
866 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
867 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
871 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
872 v.add_decl("long count_invoke_total;")
873 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
874 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
875 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
876 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
877 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
880 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
881 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
882 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
888 for m in mainmodule.in_importation.greaters do
889 var f = "FILE_"+m.c_name
890 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
891 provide_declaration(f, "extern const char {f}[];")
895 # Copile all C functions related to the [incr|decr]_ref features of the FFI
896 fun compile_nitni_global_ref_functions
898 var v = self.new_visitor
900 struct nitni_global_ref_list_t *nitni_global_ref_list;
901 void initialize_nitni_global_refs() {
902 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
903 nitni_global_ref_list->head = NULL;
904 nitni_global_ref_list->tail = NULL;
907 void nitni_global_ref_add( struct nitni_ref *ref ) {
908 if ( nitni_global_ref_list->head == NULL ) {
909 nitni_global_ref_list->head = ref;
912 nitni_global_ref_list->tail->next = ref;
913 ref->prev = nitni_global_ref_list->tail;
915 nitni_global_ref_list->tail = ref;
920 void nitni_global_ref_remove( struct nitni_ref *ref ) {
921 if ( ref->prev == NULL ) {
922 nitni_global_ref_list->head = ref->next;
924 ref->prev->next = ref->next;
927 if ( ref->next == NULL ) {
928 nitni_global_ref_list->tail = ref->prev;
930 ref->next->prev = ref->prev;
934 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
935 if ( ref->count == 0 ) /* not registered */
938 nitni_global_ref_add( ref );
944 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
945 if ( ref->count == 1 ) /* was last reference */
947 /* remove from list */
948 nitni_global_ref_remove( ref );
956 # List of additional files required to compile (FFI)
957 var extern_bodies = new Array[ExternFile]
959 # List of source files to copy over to the compile dir
960 var files_to_copy = new Array[String]
962 # This is used to avoid adding an extern file more than once
963 private var seen_extern = new ArraySet[String]
965 # Generate code that initialize the attributes on a new instance
966 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
968 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
969 self.mainmodule.linearize_mclassdefs(cds)
971 for npropdef in modelbuilder.collect_attr_propdef(cd) do
972 npropdef.init_expr(v, recv)
977 # Generate code that check if an attribute is correctly initialized
978 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
980 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
981 self.mainmodule.linearize_mclassdefs(cds)
983 for npropdef in modelbuilder.collect_attr_propdef(cd) do
984 npropdef.check_expr(v, recv)
991 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
992 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
993 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
994 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
996 protected fun init_count_type_test_tags: HashMap[String, Int]
998 var res = new HashMap[String, Int]
999 for tag in count_type_test_tags do
1005 # Display stats about compilation process
1009 # * type tests against resolved types (`x
isa Collection[Animal]`)
1010 # * type tests against unresolved types (`x
isa Collection[E
]`)
1011 # * type tests skipped
1012 # * type tests total
1015 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1016 print "# static count_type_test"
1017 print "\tresolved:\tunresolved\tskipped\ttotal"
1018 var count_type_test_total = init_count_type_test_tags
1019 count_type_test_resolved["total"] = 0
1020 count_type_test_unresolved["total"] = 0
1021 count_type_test_skipped["total"] = 0
1022 count_type_test_total["total"] = 0
1023 for tag in count_type_test_tags do
1024 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1025 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1026 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1027 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1028 count_type_test_total["total"] += count_type_test_total[tag]
1030 var count_type_test = count_type_test_total["total"]
1031 var tags = count_type_test_tags.to_a
1035 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1036 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1037 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1038 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1044 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1047 # Avoid division by zero by returning the string "n/a"
1048 fun div(a,b:Int):String
1050 if b == 0 then return "n/a"
1051 return ((a*10000/b).to_f / 100.0).to_precision(2)
1055 # A file unit (may be more than one file if
1056 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1059 var writers = new Array[CodeWriter]
1060 var required_declarations = new HashSet[String]
1063 # Where to store generated lines
1066 var lines: List[String] = new List[String]
1067 var decl_lines: List[String] = new List[String]
1069 # Add a line in the main part of the generated C
1070 fun add(s: String) do self.lines.add(s)
1073 # (used for local or global declaration)
1074 fun add_decl(s: String) do self.decl_lines.add(s)
1078 file.writers.add(self)
1082 # A visitor on the AST of property definition that generate the C code.
1083 abstract class AbstractCompilerVisitor
1085 type COMPILER: AbstractCompiler
1087 # The associated compiler
1088 var compiler: COMPILER
1090 # The current visited AST node
1091 var current_node: nullable ANode = null is writable
1093 # The current `StaticFrame`
1094 var frame: nullable StaticFrame = null is writable
1096 # Alias for self.compiler.mainmodule.object_type
1097 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1099 # Alias for self.compiler.mainmodule.bool_type
1100 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1102 var writer: CodeWriter is noinit
1106 self.writer = new CodeWriter(compiler.files.last)
1109 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1110 fun get_property(name: String, recv: MType): MMethod
1112 assert recv isa MClassType
1113 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1116 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1118 var initializers = callsite.mpropdef.initializers
1119 if not initializers.is_empty then
1120 var recv = arguments.first
1123 for p in initializers do
1124 if p isa MMethod then
1126 for x in p.intro.msignature.mparameters do
1127 args.add arguments[i]
1131 else if p isa MAttribute then
1132 self.write_attribute(p, recv, arguments[i])
1136 assert i == arguments.length
1138 return self.send(callsite.mproperty, [recv])
1141 return self.send(callsite.mproperty, arguments)
1144 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1146 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1148 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1150 # Return an element of a native array.
1151 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1152 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1154 # Store an element in a native array.
1155 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1156 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1158 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1159 # This method is used to manage varargs in signatures and returns the real array
1160 # of runtime variables to use in the call.
1161 fun varargize(mpropdef: MMethodDef, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1163 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1164 var res = new Array[RuntimeVariable]
1167 if args.is_empty then return res
1169 var vararg_rank = msignature.vararg_rank
1170 var vararg_len = args.length - msignature.arity
1171 if vararg_len < 0 then vararg_len = 0
1173 for i in [0..msignature.arity[ do
1174 if i == vararg_rank then
1176 if ne isa AVarargExpr then
1177 var e = self.expr(ne.n_expr, null)
1181 var vararg = new Array[RuntimeVariable]
1182 for j in [vararg_rank..vararg_rank+vararg_len] do
1183 var e = self.expr(args[j], null)
1186 var elttype = msignature.mparameters[vararg_rank].mtype
1187 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1191 if i > vararg_rank then j += vararg_len
1192 var e = self.expr(args[j], null)
1201 # Anchor a type to the main module and the current receiver
1202 fun anchor(mtype: MType): MType
1204 if not mtype.need_anchor then return mtype
1205 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1208 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1210 if not mtype.need_anchor then return mtype
1211 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1214 # Unsafely cast a value to a new type
1215 # ie the result share the same C variable but my have a different mcasttype
1216 # NOTE: if the adaptation is useless then `value
` is returned as it.
1217 # ENSURE: `result
.name
== value
.name
`
1218 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1220 mtype = self.anchor(mtype)
1221 var valmtype = value.mcasttype
1222 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1226 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1227 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1230 var res = new RuntimeVariable(value.name, valmtype, mtype)
1235 # Generate a super call from a method definition
1236 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1238 # Adapt the arguments of a method according to targetted `MMethodDef`
1239 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1241 # Unbox all the arguments of a method when implemented `extern` or `intern`
1242 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1244 # Box or unbox a value to another type iff a C type conversion is needed
1245 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1246 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1248 # Box extern classes to be used in the generated code
1249 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1251 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1252 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1254 # Generate a polymorphic subtype test
1255 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1257 # Generate the code required to dynamically check if 2 objects share the same runtime type
1258 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1260 # Generate a Nit "is" for two runtime_variables
1261 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1265 # Generate a static call on a method definition
1266 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1268 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1269 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1271 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1272 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1274 assert t isa MClassType
1275 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1276 return self.call(propdef, t, args)
1279 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1280 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1282 assert t isa MClassType
1283 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1284 return self.call(m, t, args)
1287 # Attributes handling
1289 # Generate a polymorphic attribute is_set test
1290 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1292 # Generate a polymorphic attribute read
1293 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1295 # Generate a polymorphic attribute write
1296 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1300 # Add a check and an abort for a null receiver if needed
1301 fun check_recv_notnull(recv: RuntimeVariable)
1303 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1305 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1307 self.add("if (unlikely({recv} == NULL)) \{")
1308 self.add_abort("Receiver is null")
1315 private var names = new HashSet[String]
1316 private var last: Int = 0
1318 # Return a new name based on `s
` and unique in the visitor
1319 fun get_name(s: String): String
1321 if not self.names.has(s) then
1325 var i = self.last + 1
1328 if not self.names.has(s2) then
1337 # Return an unique and stable identifier associated with an escapemark
1338 fun escapemark_name(e: nullable EscapeMark): String
1341 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1343 if name == null then name = "label"
1344 name = get_name(name)
1345 frame.escapemark_names[e] = name
1349 # Insert a C label for associated with an escapemark
1350 fun add_escape_label(e: nullable EscapeMark)
1352 if e == null then return
1353 if e.escapes.is_empty then return
1354 add("BREAK_{escapemark_name(e)}: (void)0;")
1357 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1358 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1359 fun class_name_string(value: RuntimeVariable): String is abstract
1361 # Variables handling
1363 protected var variables = new HashMap[Variable, RuntimeVariable]
1365 # Return the local runtime_variable associated to a Nit local variable
1366 fun variable(variable: Variable): RuntimeVariable
1368 if self.variables.has_key(variable) then
1369 return self.variables[variable]
1371 var name = self.get_name("var_{variable.name}")
1372 var mtype = variable.declared_type.as(not null)
1373 mtype = self.anchor(mtype)
1374 var res = new RuntimeVariable(name, mtype, mtype)
1375 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1376 self.variables[variable] = res
1381 # Return a new uninitialized local runtime_variable
1382 fun new_var(mtype: MType): RuntimeVariable
1384 mtype = self.anchor(mtype)
1385 var name = self.get_name("var")
1386 var res = new RuntimeVariable(name, mtype, mtype)
1387 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1391 # The difference with `new_var
` is the C static type of the local variable
1392 fun new_var_extern(mtype: MType): RuntimeVariable
1394 mtype = self.anchor(mtype)
1395 var name = self.get_name("var")
1396 var res = new RuntimeVariable(name, mtype, mtype)
1397 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1401 # Return a new uninitialized named runtime_variable
1402 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1404 mtype = self.anchor(mtype)
1405 var res = new RuntimeVariable(name, mtype, mtype)
1406 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1410 # Correctly assign a left and a right value
1411 # Boxing and unboxing is performed if required
1412 fun assign(left, right: RuntimeVariable)
1414 right = self.autobox(right, left.mtype)
1415 self.add("{left} = {right};")
1418 # Generate instances
1420 # Generate a alloc-instance + init-attributes
1421 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1423 # Allocate and init attributes of an instance of a standard or extern class
1425 # Does not support universals and the pseudo-internal `NativeArray` class.
1426 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1429 var ctype = mtype.ctype
1430 assert mtype.mclass.name != "NativeArray"
1431 if not mtype.is_c_primitive then
1432 recv = init_instance(mtype)
1433 else if ctype == "char*" then
1434 recv = new_expr("NULL/*special!*/", mtype)
1436 recv = new_expr("({ctype})0/*special!*/", mtype)
1441 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1442 fun set_finalizer(recv: RuntimeVariable)
1444 var mtype = recv.mtype
1445 var finalizable_type = compiler.mainmodule.finalizable_type
1446 if finalizable_type != null and not mtype.need_anchor and
1447 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1448 add "gc_register_finalizer({recv});"
1452 # The currently processed module
1454 # alias for `compiler
.mainmodule
`
1455 fun mmodule: MModule do return compiler.mainmodule
1457 # Generate an integer value
1458 fun int_instance(value: Int): RuntimeVariable
1460 var t = mmodule.int_type
1461 var res = new RuntimeVariable("{value.to_s}l", t, t)
1465 # Generate a char value
1466 fun char_instance(value: Char): RuntimeVariable
1468 var t = mmodule.char_type
1469 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1473 # Generate a float value
1475 # FIXME pass a Float, not a string
1476 fun float_instance(value: String): RuntimeVariable
1478 var t = mmodule.float_type
1479 var res = new RuntimeVariable("{value}", t, t)
1483 # Generate an integer value
1484 fun bool_instance(value: Bool): RuntimeVariable
1486 var s = if value then "1" else "0"
1487 var res = new RuntimeVariable(s, bool_type, bool_type)
1491 # Generate the `null` value
1492 fun null_instance: RuntimeVariable
1494 var t = compiler.mainmodule.model.null_type
1495 var res = new RuntimeVariable("((val*)NULL)", t, t)
1499 # Generate a string value
1500 fun string_instance(string: String): RuntimeVariable
1502 var mtype = mmodule.string_type
1503 var name = self.get_name("varonce")
1504 self.add_decl("static {mtype.ctype} {name};")
1505 var res = self.new_var(mtype)
1506 self.add("if (likely({name}!=NULL)) \{")
1507 self.add("{res} = {name};")
1508 self.add("\} else \{")
1509 var native_mtype = mmodule.native_string_type
1510 var nat = self.new_var(native_mtype)
1511 self.add("{nat} = \"{string.escape_to_c}\";")
1512 var length = self.int_instance(string.length)
1513 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1514 self.add("{name} = {res};")
1519 fun value_instance(object: Object): RuntimeVariable
1521 if object isa Int then
1522 return int_instance(object)
1523 else if object isa Bool then
1524 return bool_instance(object)
1525 else if object isa String then
1526 return string_instance(object)
1532 # Generate an array value
1533 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1535 # Get an instance of a array for a vararg
1536 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1540 # Add a line in the main part of the generated C
1541 fun add(s: String) do self.writer.lines.add(s)
1544 # (used for local or global declaration)
1545 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1547 # Request the presence of a global declaration
1548 fun require_declaration(key: String)
1550 var reqs = self.writer.file.required_declarations
1551 if reqs.has(key) then return
1553 var node = current_node
1554 if node != null then compiler.requirers_of_declarations[key] = node
1557 # Add a declaration in the local-header
1558 # The declaration is ensured to be present once
1559 fun declare_once(s: String)
1561 self.compiler.provide_declaration(s, s)
1562 self.require_declaration(s)
1565 # Look for a needed .h and .c file for a given module
1566 # This is used for the legacy FFI
1567 fun add_extern(mmodule: MModule)
1569 var file = mmodule.location.file.filename
1570 file = file.strip_extension(".nit")
1571 var tryfile = file + ".nit.h"
1572 if tryfile.file_exists then
1573 self.declare_once("#include \"{tryfile.basename("")}\"")
1574 self.compiler.files_to_copy.add(tryfile)
1576 tryfile = file + "_nit.h"
1577 if tryfile.file_exists then
1578 self.declare_once("#include \"{tryfile.basename("")}\"")
1579 self.compiler.files_to_copy.add(tryfile)
1582 if self.compiler.seen_extern.has(file) then return
1583 self.compiler.seen_extern.add(file)
1584 tryfile = file + ".nit.c"
1585 if not tryfile.file_exists then
1586 tryfile = file + "_nit.c"
1587 if not tryfile.file_exists then return
1589 var f = new ExternCFile(tryfile.basename(""), "")
1590 self.compiler.extern_bodies.add(f)
1591 self.compiler.files_to_copy.add(tryfile)
1594 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1595 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1597 var res = new_var(mtype)
1598 self.add("{res} = {cexpr};")
1602 # Generate generic abort
1603 # used by aborts, asserts, casts, etc.
1604 fun add_abort(message: String)
1606 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1612 if self.current_node != null and self.current_node.location.file != null and
1613 self.current_node.location.file.mmodule != null then
1614 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1615 self.require_declaration(f)
1616 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1618 self.add("PRINT_ERROR(\"\\n\");")
1620 self.add("fatal_exit(1);")
1623 # Add a dynamic cast
1624 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1626 var res = self.type_test(value, mtype, tag)
1627 self.add("if (unlikely(!{res})) \{")
1628 var cn = self.class_name_string(value)
1629 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1634 # Generate a return with the value `s
`
1635 fun ret(s: RuntimeVariable)
1637 self.assign(self.frame.returnvar.as(not null), s)
1638 self.add("goto {self.frame.returnlabel.as(not null)};")
1641 # Compile a statement (if any)
1642 fun stmt(nexpr: nullable AExpr)
1644 if nexpr == null then return
1646 var narray = nexpr.comprehension
1647 if narray != null then
1648 var recv = frame.comprehension.as(not null)
1649 var val = expr(nexpr, narray.element_mtype)
1650 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1654 var old = self.current_node
1655 self.current_node = nexpr
1657 self.current_node = old
1660 # Compile an expression an return its result
1661 # `mtype
` is the expected return type, pass null if no specific type is expected.
1662 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1664 var old = self.current_node
1665 self.current_node = nexpr
1666 var res = nexpr.expr(self).as(not null)
1667 if mtype != null then
1668 mtype = self.anchor(mtype)
1669 res = self.autobox(res, mtype)
1671 res = autoadapt(res, nexpr.mtype.as(not null))
1672 var implicit_cast_to = nexpr.implicit_cast_to
1673 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1674 add_cast(res, implicit_cast_to, "auto")
1675 res = autoadapt(res, implicit_cast_to)
1677 self.current_node = old
1681 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1682 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1684 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1685 fun debug(message: String)
1687 var node = self.current_node
1688 if node == null then
1689 print "?: {message}"
1693 self.add("/* DEBUG: {message} */")
1697 # A C function associated to a Nit method
1698 # Because of customization, a given Nit method can be compiler more that once
1699 abstract class AbstractRuntimeFunction
1701 type COMPILER: AbstractCompiler
1702 type VISITOR: AbstractCompilerVisitor
1704 # The associated Nit method
1705 var mmethoddef: MMethodDef
1707 # The mangled c name of the runtime_function
1708 # Subclasses should redefine `build_c_name
` instead
1711 var res = self.c_name_cache
1712 if res != null then return res
1713 res = self.build_c_name
1714 self.c_name_cache = res
1718 # Non cached version of `c_name
`
1719 protected fun build_c_name: String is abstract
1721 protected var c_name_cache: nullable String = null is writable
1723 # Implements a call of the runtime_function
1724 # May inline the body or generate a C function call
1725 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1727 # Generate the code for the `AbstractRuntimeFunction`
1728 # Warning: compile more than once compilation makes CC unhappy
1729 fun compile_to_c(compiler: COMPILER) is abstract
1732 # A runtime variable hold a runtime value in C.
1733 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1735 # 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.
1736 class RuntimeVariable
1737 # The name of the variable in the C code
1740 # The static type of the variable (as declard in C)
1743 # The current casted type of the variable (as known in Nit)
1744 var mcasttype: MType is writable
1746 # If the variable exaclty a mcasttype?
1747 # false (usual value) means that the variable is a mcasttype or a subtype.
1748 var is_exact: Bool = false is writable
1752 assert not mtype.need_anchor
1753 assert not mcasttype.need_anchor
1756 redef fun to_s do return name
1761 if self.is_exact then
1762 exact_str = " exact"
1767 if self.mtype == self.mcasttype then
1768 type_str = "{mtype}{exact_str}"
1770 type_str = "{mtype}({mcasttype}{exact_str})"
1772 return "<{name}:{type_str}>"
1776 # The static context of a visited property in a `AbstractCompilerVisitor`
1779 type VISITOR: AbstractCompilerVisitor
1781 # The associated visitor
1782 var visitor: VISITOR
1784 # The executed property.
1785 # A Method in case of a call, an attribute in case of a default initialization.
1786 var mpropdef: MPropDef
1788 # The static type of the receiver
1789 var receiver: MClassType
1791 # Arguments of the method (the first is the receiver)
1792 var arguments: Array[RuntimeVariable]
1794 # The runtime_variable associated to the return (in a function)
1795 var returnvar: nullable RuntimeVariable = null is writable
1797 # The label at the end of the property
1798 var returnlabel: nullable String = null is writable
1800 # Labels associated to a each escapemarks.
1801 # Because of inlinings, escape-marks must be associated to their context (the frame)
1802 private var escapemark_names = new HashMap[EscapeMark, String]
1804 # The array comprehension currently filled, if any
1805 private var comprehension: nullable RuntimeVariable = null
1809 # Return the C type associated to a given Nit static type
1810 fun ctype: String do return "val*"
1812 # C type outside of the compiler code and in boxes
1813 fun ctype_extern: String do return "val*"
1815 # Short name of the `ctype
` to use in unions
1816 fun ctypename: String do return "val"
1818 # Is the associated C type a primitive one?
1820 # ENSURE `result
== (ctype
!= "val*")`
1821 fun is_c_primitive: Bool do return false
1824 redef class MClassType
1826 redef var ctype is lazy do
1827 if mclass.name == "Int" then
1829 else if mclass.name == "Bool" then
1831 else if mclass.name == "Char" then
1833 else if mclass.name == "Float" then
1835 else if mclass.name == "NativeString" then
1837 else if mclass.name == "NativeArray" then
1844 redef var is_c_primitive is lazy do return ctype != "val*"
1846 redef fun ctype_extern: String
1848 if mclass.kind == extern_kind then
1855 redef fun ctypename: String
1857 if mclass.name == "Int" then
1859 else if mclass.name == "Bool" then
1861 else if mclass.name == "Char" then
1863 else if mclass.name == "Float" then
1865 else if mclass.name == "NativeString" then
1867 else if mclass.name == "NativeArray" then
1868 #return "{self.arguments.first.ctype}*"
1876 redef class MPropDef
1877 type VISITOR: AbstractCompilerVisitor
1880 redef class MMethodDef
1881 # Can the body be inlined?
1882 fun can_inline(v: VISITOR): Bool
1884 if is_abstract then return true
1885 var modelbuilder = v.compiler.modelbuilder
1886 var node = modelbuilder.mpropdef2node(self)
1887 if node isa APropdef then
1888 return node.can_inline
1889 else if node isa AClassdef then
1890 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1897 # Inline the body in another visitor
1898 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1900 var modelbuilder = v.compiler.modelbuilder
1901 var val = constant_value
1902 var node = modelbuilder.mpropdef2node(self)
1905 var cn = v.class_name_string(arguments.first)
1906 v.current_node = node
1907 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1912 if node isa APropdef then
1913 var oldnode = v.current_node
1914 v.current_node = node
1915 self.compile_parameter_check(v, arguments)
1916 node.compile_to_c(v, self, arguments)
1917 v.current_node = oldnode
1918 else if node isa AClassdef then
1919 var oldnode = v.current_node
1920 v.current_node = node
1921 self.compile_parameter_check(v, arguments)
1922 node.compile_to_c(v, self, arguments)
1923 v.current_node = oldnode
1924 else if val != null then
1925 v.ret(v.value_instance(val))
1932 # Generate type checks in the C code to check covariant parameters
1933 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1935 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1937 for i in [0..msignature.arity[ do
1938 # skip test for vararg since the array is instantiated with the correct polymorphic type
1939 if msignature.vararg_rank == i then continue
1941 # skip if the cast is not required
1942 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1943 if not origmtype.need_anchor then continue
1945 # get the parameter type
1946 var mtype = self.msignature.mparameters[i].mtype
1949 # note that v decides if and how to implements the cast
1950 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1951 v.add_cast(arguments[i+1], mtype, "covariance")
1958 redef class APropdef
1959 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1961 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1962 debug("Not yet implemented")
1965 fun can_inline: Bool do return true
1968 redef class AMethPropdef
1969 redef fun compile_to_c(v, mpropdef, arguments)
1971 # Call the implicit super-init
1972 var auto_super_inits = self.auto_super_inits
1973 if auto_super_inits != null then
1974 var args = [arguments.first]
1975 for auto_super_init in auto_super_inits do
1976 assert auto_super_init.mproperty != mpropdef.mproperty
1978 for i in [0..auto_super_init.msignature.arity+1[ do
1979 args.add(arguments[i])
1981 assert auto_super_init.mproperty != mpropdef.mproperty
1982 v.compile_callsite(auto_super_init, args)
1985 if auto_super_call then
1986 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1989 # Try special compilation
1990 if mpropdef.is_intern then
1991 if compile_intern_to_c(v, mpropdef, arguments) then return
1992 else if mpropdef.is_extern then
1993 if mpropdef.mproperty.is_init then
1994 if compile_externinit_to_c(v, mpropdef, arguments) then return
1996 if compile_externmeth_to_c(v, mpropdef, arguments) then return
2000 # Compile block if any
2001 var n_block = n_block
2002 if n_block != null then
2003 for i in [0..mpropdef.msignature.arity[ do
2004 var variable = self.n_signature.n_params[i].variable.as(not null)
2005 v.assign(v.variable(variable), arguments[i+1])
2012 var cn = v.class_name_string(arguments.first)
2013 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2017 redef fun can_inline
2019 if self.auto_super_inits != null then return false
2020 var nblock = self.n_block
2021 if nblock == null then return true
2022 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2023 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2027 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2029 var pname = mpropdef.mproperty.name
2030 var cname = mpropdef.mclassdef.mclass.name
2031 var ret = mpropdef.msignature.return_mtype
2033 ret = v.resolve_for(ret, arguments.first)
2035 if pname != "==" and pname != "!=" then
2036 v.adapt_signature(mpropdef, arguments)
2037 v.unbox_signature_extern(mpropdef, arguments)
2039 if cname == "Int" then
2040 if pname == "output" then
2041 v.add("printf(\"%ld\\n\", {arguments.first});")
2043 else if pname == "object_id" then
2044 v.ret(arguments.first)
2046 else if pname == "+" then
2047 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2049 else if pname == "-" then
2050 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2052 else if pname == "unary -" then
2053 v.ret(v.new_expr("-{arguments[0]}", 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 == "lshift" then
2065 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2067 else if pname == "rshift" then
2068 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2070 else if pname == "==" then
2071 v.ret(v.equal_test(arguments[0], arguments[1]))
2073 else if pname == "!=" then
2074 var res = v.equal_test(arguments[0], arguments[1])
2075 v.ret(v.new_expr("!{res}", ret.as(not null)))
2077 else if pname == "<" then
2078 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2080 else if pname == ">" then
2081 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2083 else if pname == "<=" then
2084 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2086 else if pname == ">=" then
2087 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2089 else if pname == "to_f" then
2090 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2092 else if pname == "ascii" then
2093 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2096 else if cname == "Char" then
2097 if pname == "output" then
2098 v.add("printf(\"%c\", {arguments.first});")
2100 else if pname == "object_id" then
2101 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2103 else if pname == "successor" then
2104 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2106 else if pname == "predecessor" then
2107 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2109 else if pname == "==" then
2110 v.ret(v.equal_test(arguments[0], arguments[1]))
2112 else if pname == "!=" then
2113 var res = v.equal_test(arguments[0], arguments[1])
2114 v.ret(v.new_expr("!{res}", ret.as(not null)))
2116 else if pname == "<" then
2117 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2119 else if pname == ">" then
2120 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2122 else if pname == "<=" then
2123 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2125 else if pname == ">=" then
2126 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2128 else if pname == "to_i" then
2129 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2131 else if pname == "ascii" then
2132 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2135 else if cname == "Bool" then
2136 if pname == "output" then
2137 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2139 else if pname == "object_id" then
2140 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2142 else if pname == "==" then
2143 v.ret(v.equal_test(arguments[0], arguments[1]))
2145 else if pname == "!=" then
2146 var res = v.equal_test(arguments[0], arguments[1])
2147 v.ret(v.new_expr("!{res}", ret.as(not null)))
2150 else if cname == "Float" then
2151 if pname == "output" then
2152 v.add("printf(\"%f\\n\", {arguments.first});")
2154 else if pname == "object_id" then
2155 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2157 else if pname == "+" then
2158 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2160 else if pname == "-" then
2161 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2163 else if pname == "unary -" then
2164 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2166 else if pname == "succ" then
2167 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2169 else if pname == "prec" then
2170 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2172 else if pname == "*" then
2173 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2175 else if pname == "/" then
2176 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2178 else if pname == "==" then
2179 v.ret(v.equal_test(arguments[0], arguments[1]))
2181 else if pname == "!=" then
2182 var res = v.equal_test(arguments[0], arguments[1])
2183 v.ret(v.new_expr("!{res}", ret.as(not null)))
2185 else if pname == "<" then
2186 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2188 else if pname == ">" then
2189 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2191 else if pname == "<=" then
2192 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2194 else if pname == ">=" then
2195 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2197 else if pname == "to_i" then
2198 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2201 else if cname == "NativeString" then
2202 if pname == "[]" then
2203 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2205 else if pname == "[]=" then
2206 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2208 else if pname == "copy_to" then
2209 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2211 else if pname == "atoi" then
2212 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2214 else if pname == "new" then
2215 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2218 else if cname == "NativeArray" then
2219 v.native_array_def(pname, ret, arguments)
2222 if pname == "exit" then
2223 v.add("exit({arguments[1]});")
2225 else if pname == "sys" then
2226 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2228 else if pname == "calloc_string" then
2229 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2231 else if pname == "calloc_array" then
2232 v.calloc_array(ret.as(not null), arguments)
2234 else if pname == "object_id" then
2235 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2237 else if pname == "is_same_type" then
2238 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2240 else if pname == "is_same_instance" then
2241 v.ret(v.equal_test(arguments[0], arguments[1]))
2243 else if pname == "output_class_name" then
2244 var nat = v.class_name_string(arguments.first)
2245 v.add("printf(\"%s\\n\", {nat});")
2247 else if pname == "native_class_name" then
2248 var nat = v.class_name_string(arguments.first)
2249 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2251 else if pname == "force_garbage_collection" then
2252 v.add("nit_gcollect();")
2254 else if pname == "native_argc" then
2255 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2257 else if pname == "native_argv" then
2258 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2264 # Compile an extern method
2265 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2266 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2269 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2270 if at != null and at.n_args.length == 1 then
2271 externname = at.arg_as_string(v.compiler.modelbuilder)
2272 if externname == null then return false
2276 v.add_extern(mpropdef.mclassdef.mmodule)
2277 var res: nullable RuntimeVariable = null
2278 var ret = mpropdef.msignature.return_mtype
2280 ret = v.resolve_for(ret, arguments.first)
2281 res = v.new_var_extern(ret)
2283 v.adapt_signature(mpropdef, arguments)
2284 v.unbox_signature_extern(mpropdef, arguments)
2287 v.add("{externname}({arguments.join(", ")});")
2289 v.add("{res} = {externname}({arguments.join(", ")});")
2290 res = v.box_extern(res, ret.as(not null))
2296 # Compile an extern factory
2297 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2298 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2301 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2303 externname = at.arg_as_string(v.compiler.modelbuilder)
2304 if externname == null then return false
2308 v.add_extern(mpropdef.mclassdef.mmodule)
2309 v.adapt_signature(mpropdef, arguments)
2310 v.unbox_signature_extern(mpropdef, arguments)
2311 var ret = arguments.first.mtype
2312 var res = v.new_var_extern(ret)
2316 v.add("{res} = {externname}({arguments.join(", ")});")
2317 res = v.box_extern(res, ret)
2323 redef class AAttrPropdef
2324 redef fun can_inline: Bool do return not is_lazy
2326 redef fun compile_to_c(v, mpropdef, arguments)
2328 if mpropdef == mreadpropdef then
2329 assert arguments.length == 1
2330 var recv = arguments.first
2334 var ret = self.mpropdef.static_mtype
2335 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2336 var guard = self.mlazypropdef.mproperty
2338 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2340 set = v.read_attribute(guard, recv)
2342 v.add("if(likely({set})) \{")
2343 res = v.read_attribute(self.mpropdef.mproperty, recv)
2346 var value = evaluate_expr(v, recv)
2348 v.assign(res, value)
2350 var true_v = v.bool_instance(true)
2351 v.write_attribute(guard, arguments.first, true_v)
2355 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2357 v.assign(v.frame.returnvar.as(not null), res)
2358 else if mpropdef == mwritepropdef then
2359 assert arguments.length == 2
2360 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2362 var ret = self.mpropdef.static_mtype
2363 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2365 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2373 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2375 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2378 # Evaluate, store and return the default value of the attribute
2379 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2381 var oldnode = v.current_node
2382 v.current_node = self
2383 var old_frame = v.frame
2384 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.as_notnullable.as(MClassType), [recv])
2388 var mtype = self.mpropdef.static_mtype
2389 assert mtype != null
2391 var nexpr = self.n_expr
2392 var nblock = self.n_block
2393 if nexpr != null then
2394 value = v.expr(nexpr, mtype)
2395 else if nblock != null then
2396 value = v.new_var(mtype)
2397 frame.returnvar = value
2398 frame.returnlabel = v.get_name("RET_LABEL")
2401 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2407 v.write_attribute(self.mpropdef.mproperty, recv, value)
2410 v.current_node = oldnode
2415 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2417 var nexpr = self.n_expr
2418 if nexpr != null then return
2420 var oldnode = v.current_node
2421 v.current_node = self
2422 var old_frame = v.frame
2423 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2425 # Force read to check the initialization
2426 v.read_attribute(self.mpropdef.mproperty, recv)
2428 v.current_node = oldnode
2432 redef class AClassdef
2433 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2435 if mpropdef == self.mfree_init then
2436 assert mpropdef.mproperty.is_root_init
2437 assert arguments.length == 1
2438 if not mpropdef.is_intro then
2439 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2449 # Try to compile self as an expression
2450 # Do not call this method directly, use `v
.expr
` instead
2451 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2453 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2454 var mtype = self.mtype
2455 if mtype == null then
2458 var res = v.new_var(mtype)
2459 v.add("/* {res} = NOT YET {class_name} */")
2464 # Try to compile self as a statement
2465 # Do not call this method directly, use `v
.stmt
` instead
2466 private fun stmt(v: AbstractCompilerVisitor)
2472 redef class ABlockExpr
2475 for e in self.n_expr do v.stmt(e)
2479 var last = self.n_expr.last
2480 for e in self.n_expr do
2481 if e == last then break
2484 return v.expr(last, null)
2488 redef class AVardeclExpr
2491 var variable = self.variable.as(not null)
2492 var ne = self.n_expr
2494 var i = v.expr(ne, variable.declared_type)
2495 v.assign(v.variable(variable), i)
2500 redef class AVarExpr
2503 var res = v.variable(self.variable.as(not null))
2504 var mtype = self.mtype.as(not null)
2505 return v.autoadapt(res, mtype)
2509 redef class AVarAssignExpr
2512 var variable = self.variable.as(not null)
2513 var i = v.expr(self.n_value, variable.declared_type)
2514 v.assign(v.variable(variable), i)
2519 redef class AVarReassignExpr
2522 var variable = self.variable.as(not null)
2523 var vari = v.variable(variable)
2524 var value = v.expr(self.n_value, variable.declared_type)
2525 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2527 v.assign(v.variable(variable), res)
2531 redef class ASelfExpr
2532 redef fun expr(v) do return v.frame.arguments.first
2535 redef class AEscapeExpr
2536 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2539 redef class AReturnExpr
2542 var nexpr = self.n_expr
2543 if nexpr != null then
2544 var returnvar = v.frame.returnvar.as(not null)
2545 var i = v.expr(nexpr, returnvar.mtype)
2546 v.assign(returnvar, i)
2548 v.add("goto {v.frame.returnlabel.as(not null)};")
2552 redef class AAbortExpr
2553 redef fun stmt(v) do v.add_abort("Aborted")
2559 var cond = v.expr_bool(self.n_expr)
2560 v.add("if ({cond})\{")
2569 var res = v.new_var(self.mtype.as(not null))
2570 var cond = v.expr_bool(self.n_expr)
2571 v.add("if ({cond})\{")
2572 v.assign(res, v.expr(self.n_then.as(not null), null))
2574 v.assign(res, v.expr(self.n_else.as(not null), null))
2580 redef class AIfexprExpr
2583 var res = v.new_var(self.mtype.as(not null))
2584 var cond = v.expr_bool(self.n_expr)
2585 v.add("if ({cond})\{")
2586 v.assign(res, v.expr(self.n_then, null))
2588 v.assign(res, v.expr(self.n_else, null))
2597 v.stmt(self.n_block)
2598 v.add_escape_label(break_mark)
2602 redef class AWhileExpr
2606 var cond = v.expr_bool(self.n_expr)
2607 v.add("if (!{cond}) break;")
2608 v.stmt(self.n_block)
2609 v.add_escape_label(continue_mark)
2611 v.add_escape_label(break_mark)
2615 redef class ALoopExpr
2619 v.stmt(self.n_block)
2620 v.add_escape_label(continue_mark)
2622 v.add_escape_label(break_mark)
2626 redef class AForExpr
2629 var cl = v.expr(self.n_expr, null)
2630 var it_meth = self.method_iterator
2631 assert it_meth != null
2632 var it = v.compile_callsite(it_meth, [cl])
2635 var isok_meth = self.method_is_ok
2636 assert isok_meth != null
2637 var ok = v.compile_callsite(isok_meth, [it])
2639 v.add("if(!{ok}) break;")
2640 if self.variables.length == 1 then
2641 var item_meth = self.method_item
2642 assert item_meth != null
2643 var i = v.compile_callsite(item_meth, [it])
2645 v.assign(v.variable(variables.first), i)
2646 else if self.variables.length == 2 then
2647 var key_meth = self.method_key
2648 assert key_meth != null
2649 var i = v.compile_callsite(key_meth, [it])
2651 v.assign(v.variable(variables[0]), i)
2652 var item_meth = self.method_item
2653 assert item_meth != null
2654 i = v.compile_callsite(item_meth, [it])
2656 v.assign(v.variable(variables[1]), i)
2660 v.stmt(self.n_block)
2661 v.add_escape_label(continue_mark)
2662 var next_meth = self.method_next
2663 assert next_meth != null
2664 v.compile_callsite(next_meth, [it])
2666 v.add_escape_label(break_mark)
2668 var method_finish = self.method_finish
2669 if method_finish != null then
2670 # TODO: Find a way to call this also in long escape (e.g. return)
2671 v.compile_callsite(method_finish, [it])
2676 redef class AAssertExpr
2679 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2681 var cond = v.expr_bool(self.n_expr)
2682 v.add("if (unlikely(!{cond})) \{")
2686 v.add_abort("Assert '{nid.text}' failed")
2688 v.add_abort("Assert failed")
2697 var res = v.new_var(self.mtype.as(not null))
2698 var i1 = v.expr_bool(self.n_expr)
2699 v.add("if ({i1}) \{")
2702 var i2 = v.expr_bool(self.n_expr2)
2703 v.add("{res} = {i2};")
2709 redef class AImpliesExpr
2712 var res = v.new_var(self.mtype.as(not null))
2713 var i1 = v.expr_bool(self.n_expr)
2714 v.add("if (!{i1}) \{")
2717 var i2 = v.expr_bool(self.n_expr2)
2718 v.add("{res} = {i2};")
2724 redef class AAndExpr
2727 var res = v.new_var(self.mtype.as(not null))
2728 var i1 = v.expr_bool(self.n_expr)
2729 v.add("if (!{i1}) \{")
2732 var i2 = v.expr_bool(self.n_expr2)
2733 v.add("{res} = {i2};")
2739 redef class ANotExpr
2742 var cond = v.expr_bool(self.n_expr)
2743 return v.new_expr("!{cond}", self.mtype.as(not null))
2747 redef class AOrElseExpr
2750 var res = v.new_var(self.mtype.as(not null))
2751 var i1 = v.expr(self.n_expr, null)
2752 v.add("if ({i1}!=NULL) \{")
2755 var i2 = v.expr(self.n_expr2, null)
2762 redef class AIntExpr
2763 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2766 redef class AFloatExpr
2767 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2770 redef class ACharExpr
2771 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2774 redef class AArrayExpr
2777 var mtype = self.element_mtype.as(not null)
2778 var array = new Array[RuntimeVariable]
2779 var res = v.array_instance(array, mtype)
2781 var old_comprehension = v.frame.comprehension
2782 v.frame.comprehension = res
2783 for nexpr in self.n_exprs do
2786 v.frame.comprehension = old_comprehension
2792 redef class AStringFormExpr
2793 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2796 redef class ASuperstringExpr
2799 var type_string = mtype.as(not null)
2801 # Collect elements of the superstring
2802 var array = new Array[AExpr]
2803 for ne in self.n_exprs do
2804 # Drop literal empty string.
2805 # They appears in things like "{a}" that is ["", a, ""]
2806 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2810 # Store the allocated native array in a static variable
2812 var varonce = v.get_name("varonce")
2813 v.add("if (unlikely({varonce}==NULL)) \{")
2815 # The native array that will contains the elements to_s-ized.
2816 # For fast concatenation.
2817 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2819 v.add_decl("static {a.mtype.ctype} {varonce};")
2821 # Pre-fill the array with the literal string parts.
2822 # So they do not need to be filled again when reused
2823 for i in [0..array.length[ do
2825 if not ne isa AStringFormExpr then continue
2826 var e = v.expr(ne, null)
2827 v.native_array_set(a, i, e)
2831 # Take the native-array from the store.
2832 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2833 # WARNING: not thread safe! (FIXME?)
2834 v.add("{a} = {varonce};")
2835 v.add("{varonce} = NULL;")
2838 # Stringify the elements and put them in the native array
2839 var to_s_method = v.get_property("to_s", v.object_type)
2840 for i in [0..array.length[ do
2842 if ne isa AStringFormExpr then continue
2843 var e = v.expr(ne, null)
2844 # Skip the `to_s
` if the element is already a String
2845 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2846 e = v.send(to_s_method, [e]).as(not null)
2848 v.native_array_set(a, i, e)
2851 # Fast join the native string to get the result
2852 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2854 # We finish to work with the native array,
2855 # so store it so that it can be reused
2856 v.add("{varonce} = {a};")
2861 redef class ACrangeExpr
2864 var i1 = v.expr(self.n_expr, null)
2865 var i2 = v.expr(self.n_expr2, null)
2866 var mtype = self.mtype.as(MClassType)
2867 var res = v.init_instance(mtype)
2868 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2873 redef class AOrangeExpr
2876 var i1 = v.expr(self.n_expr, null)
2877 var i2 = v.expr(self.n_expr2, null)
2878 var mtype = self.mtype.as(MClassType)
2879 var res = v.init_instance(mtype)
2880 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2885 redef class ATrueExpr
2886 redef fun expr(v) do return v.bool_instance(true)
2889 redef class AFalseExpr
2890 redef fun expr(v) do return v.bool_instance(false)
2893 redef class ANullExpr
2894 redef fun expr(v) do return v.null_instance
2897 redef class AIsaExpr
2900 var i = v.expr(self.n_expr, null)
2901 return v.type_test(i, self.cast_type.as(not null), "isa")
2905 redef class AAsCastExpr
2908 var i = v.expr(self.n_expr, null)
2909 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2911 v.add_cast(i, self.mtype.as(not null), "as")
2916 redef class AAsNotnullExpr
2919 var i = v.expr(self.n_expr, null)
2920 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2922 if i.mtype.is_c_primitive then return i
2924 v.add("if (unlikely({i} == NULL)) \{")
2925 v.add_abort("Cast failed")
2931 redef class AParExpr
2932 redef fun expr(v) do return v.expr(self.n_expr, null)
2935 redef class AOnceExpr
2938 var mtype = self.mtype.as(not null)
2939 var name = v.get_name("varonce")
2940 var guard = v.get_name(name + "_guard")
2941 v.add_decl("static {mtype.ctype} {name};")
2942 v.add_decl("static int {guard};")
2943 var res = v.new_var(mtype)
2944 v.add("if (likely({guard})) \{")
2945 v.add("{res} = {name};")
2947 var i = v.expr(self.n_expr, mtype)
2948 v.add("{res} = {i};")
2949 v.add("{name} = {res};")
2950 v.add("{guard} = 1;")
2956 redef class ASendExpr
2959 var recv = v.expr(self.n_expr, null)
2960 var callsite = self.callsite.as(not null)
2961 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2962 return v.compile_callsite(callsite, args)
2966 redef class ASendReassignFormExpr
2969 var recv = v.expr(self.n_expr, null)
2970 var callsite = self.callsite.as(not null)
2971 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2973 var value = v.expr(self.n_value, null)
2975 var left = v.compile_callsite(callsite, args)
2978 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2982 v.compile_callsite(self.write_callsite.as(not null), args)
2986 redef class ASuperExpr
2989 var recv = v.frame.arguments.first
2991 var callsite = self.callsite
2992 if callsite != null then
2993 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
2995 # Add additional arguments for the super init call
2996 if args.length == 1 then
2997 for i in [0..callsite.msignature.arity[ do
2998 args.add(v.frame.arguments[i+1])
3002 var res = v.compile_callsite(callsite, args)
3006 var mpropdef = self.mpropdef.as(not null)
3007 var args = v.varargize(mpropdef, recv, self.n_args.n_exprs)
3008 if args.length == 1 then
3009 args = v.frame.arguments
3012 # stantard call-next-method
3013 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3017 redef class ANewExpr
3020 var mtype = self.recvtype
3021 assert mtype != null
3023 if mtype.mclass.name == "NativeArray" then
3024 assert self.n_args.n_exprs.length == 1
3025 var l = v.expr(self.n_args.n_exprs.first, null)
3026 assert mtype isa MGenericType
3027 var elttype = mtype.arguments.first
3028 return v.native_array_instance(elttype, l)
3031 var recv = v.init_instance_or_extern(mtype)
3033 var callsite = self.callsite.as(not null)
3034 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
3035 var res2 = v.compile_callsite(callsite, args)
3036 if res2 != null then
3037 #self.debug("got {res2} from {mproperty}. drop {recv}")
3044 redef class AAttrExpr
3047 var recv = v.expr(self.n_expr, null)
3048 var mproperty = self.mproperty.as(not null)
3049 return v.read_attribute(mproperty, recv)
3053 redef class AAttrAssignExpr
3056 var recv = v.expr(self.n_expr, null)
3057 var i = v.expr(self.n_value, null)
3058 var mproperty = self.mproperty.as(not null)
3059 v.write_attribute(mproperty, recv, i)
3064 redef class AAttrReassignExpr
3067 var recv = v.expr(self.n_expr, null)
3068 var value = v.expr(self.n_value, null)
3069 var mproperty = self.mproperty.as(not null)
3070 var attr = v.read_attribute(mproperty, recv)
3071 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3073 v.write_attribute(mproperty, recv, res)
3077 redef class AIssetAttrExpr
3080 var recv = v.expr(self.n_expr, null)
3081 var mproperty = self.mproperty.as(not null)
3082 return v.isset_attribute(mproperty, recv)
3086 redef class ADebugTypeExpr
3095 redef class Array[E]
3096 # Return a new `Array` with the elements only contened in self and not in `o
`
3097 fun -(o: Array[E]): Array[E] do
3098 var res = new Array[E]
3099 for e in self do if not o.has(e) then res.add(e)
3105 # All `MProperty` associated to all `MClassDef` of `mclass
`
3106 fun properties(mclass: MClass): Set[MProperty] do
3107 if not self.properties_cache.has_key(mclass) then
3108 var properties = new HashSet[MProperty]
3109 var parents = new Array[MClass]
3110 if self.flatten_mclass_hierarchy.has(mclass) then
3111 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3113 for parent in parents do
3114 properties.add_all(self.properties(parent))
3116 for mclassdef in mclass.mclassdefs do
3117 if not self.in_importation <= mclassdef.mmodule then continue
3118 for mprop in mclassdef.intro_mproperties do
3119 properties.add(mprop)
3122 self.properties_cache[mclass] = properties
3124 return properties_cache[mclass]
3126 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3128 # Write FFI and nitni results to file
3129 fun finalize_ffi(c: AbstractCompiler) do end
3131 # Give requided addinional system libraries (as given to LD_LIBS)
3132 # Note: can return null instead of an empty set
3133 fun collect_linker_libs: nullable Array[String] do return null
3136 # Create a tool context to handle options and paths
3137 var toolcontext = new ToolContext
3139 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3141 # We do not add other options, so process them now!
3142 toolcontext.process_options(args)
3144 # We need a model to collect stufs
3145 var model = new Model
3146 # An a model builder to parse files
3147 var modelbuilder = new ModelBuilder(model, toolcontext)
3149 var arguments = toolcontext.option_context.rest
3150 if arguments.length > 1 and toolcontext.opt_output.value != null then
3151 print "Error: --output needs a single source file. Do you prefer --dir?"
3155 # Here we load an process all modules passed on the command line
3156 var mmodules = modelbuilder.parse(arguments)
3158 if mmodules.is_empty then return
3159 modelbuilder.run_phases
3161 for mmodule in mmodules do
3162 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3164 toolcontext.run_global_phases(ms)