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
.first_real_mmodule
304 return mainmodule
.name
307 # Combine options and platform informations to get the final path of the outfile
308 fun outfile
(mainmodule
: MModule): String
310 var res
= self.toolcontext
.opt_output
.value
311 if res
!= null then return res
312 res
= default_outname
313 var dir
= self.toolcontext
.opt_dir
.value
314 if dir
!= null then return dir
.join_path
(res
)
319 fun write_makefile
(compile_dir
: String, cfiles
: Array[String])
321 var mainmodule
= compiler
.mainmodule
322 var platform
= compiler
.target_platform
324 var outname
= outfile
(mainmodule
)
326 var real_outpath
= compile_dir
.relpath
(outname
)
327 var outpath
= real_outpath
.escape_to_mk
328 if outpath
!= real_outpath
then
329 # If the name is crazy and need escaping, we will do an indirection
330 # 1. generate the binary in the .nit_compile dir under an escaped name
331 # 2. copy the binary at the right place in the `all` goal.
332 outpath
= mainmodule
.c_name
334 var makename
= makefile_name
335 var makepath
= "{compile_dir}/{makename}"
336 var makefile
= new FileWriter.open
(makepath
)
338 var linker_options
= new HashSet[String]
339 for m
in mainmodule
.in_importation
.greaters
do
340 var libs
= m
.collect_linker_libs
341 if libs
!= null then linker_options
.add_all
(libs
)
344 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")
346 var ost
= toolcontext
.opt_stacktrace
.value
347 if (ost
== "libunwind" or ost
== "nitstack") and platform
.supports_libunwind
then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
349 # Dynamic adaptations
350 # While `platform` enable complex toolchains, they are statically applied
351 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
353 # Check and adapt the targeted system
354 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
355 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
356 # remove -lunwind since it is already included on macosx
357 makefile
.write
("\tNEED_LIBUNWIND :=\n")
358 makefile
.write
("endif\n\n")
360 # Check and adapt for the compiler used
361 # clang need an additionnal `-Qunused-arguments`
362 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
364 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
366 makefile
.write
("all: {outpath}\n")
367 if outpath
!= real_outpath
then
368 makefile
.write
("\tcp -- {outpath.escape_to_sh} {real_outpath.escape_to_sh.replace("$","$$")}")
372 var ofiles
= new Array[String]
373 var dep_rules
= new Array[String]
374 # Compile each generated file
376 var o
= f
.strip_extension
(".c") + ".o"
377 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
382 # Generate linker script, if any
383 if not compiler
.linker_script
.is_empty
then
384 var linker_script_path
= "{compile_dir}/linker_script"
385 ofiles
.add
"linker_script"
386 var f
= new FileWriter.open
(linker_script_path
)
387 for l
in compiler
.linker_script
do
394 var java_files
= new Array[ExternFile]
396 var pkgconfigs
= new Array[String]
397 for f
in compiler
.extern_bodies
do
398 pkgconfigs
.add_all f
.pkgconfigs
401 if not pkgconfigs
.is_empty
then
403 # does pkg-config exists?
404 ifneq ($(shell which pkg-config >/dev/null; echo $$?), 0)
405 $(error "Command `pkg-config` not found. Please install it")
408 for p
in pkgconfigs
do
410 # Check for library {{{p}}}
411 ifneq ($(shell pkg-config --exists '{{{p}}}'; echo $$?), 0)
412 $(error "pkg-config: package {{{p}}} is not found.")
418 # Compile each required extern body into a specific .o
419 for f
in compiler
.extern_bodies
do
420 var o
= f
.makefile_rule_name
421 var ff
= f
.filename
.basename
("")
422 makefile
.write
("{o}: {ff}\n")
423 makefile
.write
("\t{f.makefile_rule_content}\n\n")
424 dep_rules
.add
(f
.makefile_rule_name
)
426 if f
.compiles_to_o_file
then ofiles
.add
(o
)
427 if f
.add_to_jar
then java_files
.add
(f
)
430 if not java_files
.is_empty
then
431 var jar_file
= "{outpath}.jar"
433 var class_files_array
= new Array[String]
434 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
435 var class_files
= class_files_array
.join
(" ")
437 makefile
.write
("{jar_file}: {class_files}\n")
438 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
439 dep_rules
.add jar_file
444 if not pkgconfigs
.is_empty
then
445 pkg
= "`pkg-config --libs {pkgconfigs.join(" ")}`"
447 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath.escape_to_sh} {ofiles.join(" ")} $(LDLIBS) {pkg}\n\n")
449 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n")
450 if outpath
!= real_outpath
then
451 makefile
.write
("\trm -- {outpath.escape_to_sh} 2>/dev/null\n")
454 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
456 makepath
.file_copy_to
"{compile_dir}/Makefile"
459 # The C code is generated, compile it to an executable
460 fun compile_c_code
(compile_dir
: String)
462 var makename
= makefile_name
464 var makeflags
= self.toolcontext
.opt_make_flags
.value
465 if makeflags
== null then makeflags
= ""
466 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
469 if self.toolcontext
.verbose_level
>= 3 then
470 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
472 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
475 toolcontext
.error
(null, "make failed! Error code: {res}.")
480 # Singleton that store the knowledge about the compilation process
481 abstract class AbstractCompiler
482 type VISITOR: AbstractCompilerVisitor
484 # Table corresponding c_names to nit names (methods)
485 var names
= new HashMap[String, String]
487 # The main module of the program currently compiled
488 # Is assigned during the separate compilation
489 var mainmodule
: MModule is writable
491 # The real main module of the program
492 var realmainmodule
: MModule is noinit
494 # The modelbuilder used to know the model and the AST
495 var modelbuilder
: ModelBuilder is protected writable
497 # Is hardening asked? (see --hardening)
498 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
500 # The targeted specific platform
501 var target_platform
: Platform is noinit
505 self.realmainmodule
= mainmodule
506 target_platform
= mainmodule
.target_platform
or else new Platform
509 # Do the full code generation of the program `mainmodule`
510 # It is the main method usually called after the instantiation
511 fun do_compilation
is abstract
513 # Force the creation of a new file
514 # The point is to avoid contamination between must-be-compiled-separately files
515 fun new_file
(name
: String): CodeFile
517 if modelbuilder
.toolcontext
.opt_group_c_files
.value
then
518 if self.files
.is_empty
then
519 var f
= new CodeFile(mainmodule
.c_name
)
522 return self.files
.first
524 var f
= new CodeFile(name
)
529 # The list of all associated files
530 # Used to generate .c files
531 var files
= new List[CodeFile]
533 # Initialize a visitor specific for a compiler engine
534 fun new_visitor
: VISITOR is abstract
536 # Where global declaration are stored (the main .h)
537 var header
: CodeWriter is writable, noinit
539 # Additionnal linker script for `ld`.
540 # Mainly used to do specific link-time symbol resolution
541 var linker_script
= new Array[String]
543 # Provide a declaration that can be requested (before or latter) by a visitor
544 fun provide_declaration
(key
: String, s
: String)
546 if self.provided_declarations
.has_key
(key
) then
547 assert self.provided_declarations
[key
] == s
549 self.provided_declarations
[key
] = s
552 private var provided_declarations
= new HashMap[String, String]
554 private var requirers_of_declarations
= new HashMap[String, ANode]
556 # Builds the .c and .h files to be used when generating a Stack Trace
557 # Binds the generated C function names to Nit function names
558 fun build_c_to_nit_bindings
560 var compile_dir
= modelbuilder
.compile_dir
562 var stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.c")
563 stream
.write
("#include <string.h>\n")
564 stream
.write
("#include <stdlib.h>\n")
565 stream
.write
("#include \"c_functions_hash
.h\
"\n")
566 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
567 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
568 stream
.write
("char* procname = malloc(len+1);")
569 stream
.write
("memcpy(procname, procproc, len);")
570 stream
.write
("procname[len] = '\\0';")
571 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
572 for i
in names
.keys
do
574 stream.write(i.escape_to_c)
575 stream.write("\
",\"")
576 stream.write(names[i].escape_to_c)
577 stream.write("\
"\},\n")
579 stream
.write
("\};\n")
580 stream
.write
("int i;")
581 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
582 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
583 stream
.write
("free(procname);")
584 stream
.write
("return map[i].nit_name;")
587 stream
.write
("free(procname);")
588 stream
.write
("return NULL;")
592 stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.h")
593 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
596 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
600 # This method call compile_header_strucs method that has to be refined
601 fun compile_header
do
602 self.header
.add_decl
("#include <stdlib.h>")
603 self.header
.add_decl
("#include <stdio.h>")
604 self.header
.add_decl
("#include <string.h>")
605 self.header
.add_decl
("#include <sys/types.h>\n")
606 self.header
.add_decl
("#include <unistd.h>\n")
607 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
608 self.header
.add_decl
("#ifdef ANDROID")
609 self.header
.add_decl
(" #include <android/log.h>")
610 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
611 self.header
.add_decl
("#else")
612 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
613 self.header
.add_decl
("#endif")
615 compile_header_structs
616 compile_nitni_structs
618 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
619 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
620 # Signal handler function prototype
621 self.header
.add_decl
("void fatal_exit(int);")
623 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
626 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
627 self.header
.add_decl
("#define likely(x) (x)")
628 self.header
.add_decl
("#define unlikely(x) (x)")
629 else if gccd_disable
.has
("correct-likely") then
630 # invert the `likely` definition
631 # Used by masochists to bench the worst case
632 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
633 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
635 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
636 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
639 # Global variable used by intern methods
640 self.header
.add_decl
("extern int glob_argc;")
641 self.header
.add_decl
("extern char **glob_argv;")
642 self.header
.add_decl
("extern val *glob_sys;")
645 # Declaration of structures for live Nit types
646 protected fun compile_header_structs
is abstract
648 # Declaration of structures for nitni undelying the FFI
649 protected fun compile_nitni_structs
651 self.header
.add_decl
"""
652 /* Native reference to Nit objects */
653 /* This structure is used to represent every Nit type in extern methods and custom C code. */
655 struct nitni_ref *next,
656 *prev; /* adjacent global references in global list */
657 int count; /* number of time this global reference has been marked */
660 /* List of global references from C code to Nit objects */
661 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
662 struct nitni_global_ref_list_t {
663 struct nitni_ref *head, *tail;
665 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
667 /* Initializer of global reference list */
668 extern void nitni_global_ref_list_init();
670 /* Intern function to add a global reference to the list */
671 extern void nitni_global_ref_add( struct nitni_ref *ref );
673 /* Intern function to remove a global reference from the list */
674 extern void nitni_global_ref_remove( struct nitni_ref *ref );
676 /* Increase count on an existing global reference */
677 extern void nitni_global_ref_incr( struct nitni_ref *ref );
679 /* Decrease count on an existing global reference */
680 extern void nitni_global_ref_decr( struct nitni_ref *ref );
684 fun compile_finalizer_function
686 var finalizable_type
= mainmodule
.finalizable_type
687 if finalizable_type
== null then return
689 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
691 if finalize_meth
== null then
692 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
696 var v
= self.new_visitor
697 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
698 var recv
= v
.new_expr
("obj", finalizable_type
)
699 v
.send
(finalize_meth
, [recv
])
703 # Generate the main C function.
707 # * allocate the Sys object if it exists
708 # * call init if is exists
709 # * call main if it exists
710 fun compile_main_function
712 var v
= self.new_visitor
713 v
.add_decl
("#include <signal.h>")
714 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
715 var platform
= target_platform
717 if not platform
.supports_libunwind
then ost
= "none"
719 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
721 if ost
== "nitstack" or ost
== "libunwind" then
722 v
.add_decl
("#define UNW_LOCAL_ONLY")
723 v
.add_decl
("#include <libunwind.h>")
724 if ost
== "nitstack" then
725 v
.add_decl
("#include \"c_functions_hash
.h\
"")
728 v
.add_decl
("int glob_argc;")
729 v
.add_decl
("char **glob_argv;")
730 v
.add_decl
("val *glob_sys;")
732 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
733 for tag
in count_type_test_tags
do
734 v
.add_decl
("long count_type_test_resolved_{tag};")
735 v
.add_decl
("long count_type_test_unresolved_{tag};")
736 v
.add_decl
("long count_type_test_skipped_{tag};")
737 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
738 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
739 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
743 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
744 v
.add_decl
("long count_invoke_by_tables;")
745 v
.add_decl
("long count_invoke_by_direct;")
746 v
.add_decl
("long count_invoke_by_inline;")
747 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
748 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
749 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
752 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
753 v
.add_decl
("long count_attr_reads = 0;")
754 v
.add_decl
("long count_isset_checks = 0;")
755 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
756 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
759 v
.add_decl
("static void show_backtrace(void) \{")
760 if ost
== "nitstack" or ost
== "libunwind" then
761 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
762 v
.add_decl
("unw_cursor_t cursor;")
763 v
.add_decl
("if(opt==NULL)\{")
764 v
.add_decl
("unw_context_t uc;")
765 v
.add_decl
("unw_word_t ip;")
766 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
767 v
.add_decl
("unw_getcontext(&uc);")
768 v
.add_decl
("unw_init_local(&cursor, &uc);")
769 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
770 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
771 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
772 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
773 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
774 if ost
== "nitstack" then
775 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
776 v
.add_decl
(" if (recv != NULL)\{")
777 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
778 v.add_decl(" \}else\{")
779 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
782 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
785 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
786 v.add_decl("free(procname);")
791 v.add_decl("void sig_handler(int signo)\{")
792 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
793 v.add_decl("show_backtrace();")
795 v.add_decl("signal(signo, SIG_DFL);")
796 v.add_decl("kill(getpid(), signo);")
799 v.add_decl("void fatal_exit(int status) \{")
800 v.add_decl("show_backtrace();")
801 v.add_decl("exit(status);")
805 v.add_decl("int nit_main(int argc, char** argv) \{")
807 v.add_decl("int main(int argc, char** argv) \{")
810 v.add("signal(SIGABRT, sig_handler);")
811 v.add("signal(SIGFPE, sig_handler);")
812 v.add("signal(SIGILL, sig_handler);")
813 v.add("signal(SIGINT, sig_handler);")
814 v.add("signal(SIGTERM, sig_handler);")
815 v.add("signal(SIGSEGV, sig_handler);")
816 v.add("signal(SIGPIPE, sig_handler);")
818 v.add("glob_argc = argc; glob_argv = argv;")
819 v.add("initialize_gc_option();")
821 v.add "initialize_nitni_global_refs();"
823 var main_type = mainmodule.sys_type
824 if main_type != null then
825 var mainmodule = v.compiler.mainmodule
826 var glob_sys = v.init_instance(main_type)
827 v.add("glob_sys = {glob_sys};")
828 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
829 if main_init != null then
830 v.send(main_init, [glob_sys])
832 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
833 mainmodule.try_get_primitive_method("main", main_type.mclass)
834 if main_method != null then
835 v.send(main_method, [glob_sys])
839 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
840 v.add_decl("long count_type_test_resolved_total = 0;")
841 v.add_decl("long count_type_test_unresolved_total = 0;")
842 v.add_decl("long count_type_test_skipped_total = 0;")
843 v.add_decl("long count_type_test_total_total = 0;")
844 for tag in count_type_test_tags do
845 v.add_decl("long count_type_test_total_{tag};")
846 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
847 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
848 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
849 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
850 v.add("count_type_test_total_total += count_type_test_total_{tag};")
852 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
853 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
854 var tags = count_type_test_tags.to_a
857 v.add("printf(\"{tag}\");")
858 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
859 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
860 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
861 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
865 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
866 v.add_decl("long count_invoke_total;")
867 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
868 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
869 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
870 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
871 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
874 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
875 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
876 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
882 for m in mainmodule.in_importation.greaters do
883 var f = "FILE_"+m.c_name
884 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
885 provide_declaration(f, "extern const char {f}[];")
889 # Copile all C functions related to the [incr|decr]_ref features of the FFI
890 fun compile_nitni_global_ref_functions
892 var v = self.new_visitor
894 struct nitni_global_ref_list_t *nitni_global_ref_list;
895 void initialize_nitni_global_refs() {
896 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
897 nitni_global_ref_list->head = NULL;
898 nitni_global_ref_list->tail = NULL;
901 void nitni_global_ref_add( struct nitni_ref *ref ) {
902 if ( nitni_global_ref_list->head == NULL ) {
903 nitni_global_ref_list->head = ref;
906 nitni_global_ref_list->tail->next = ref;
907 ref->prev = nitni_global_ref_list->tail;
909 nitni_global_ref_list->tail = ref;
914 void nitni_global_ref_remove( struct nitni_ref *ref ) {
915 if ( ref->prev == NULL ) {
916 nitni_global_ref_list->head = ref->next;
918 ref->prev->next = ref->next;
921 if ( ref->next == NULL ) {
922 nitni_global_ref_list->tail = ref->prev;
924 ref->next->prev = ref->prev;
928 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
929 if ( ref->count == 0 ) /* not registered */
932 nitni_global_ref_add( ref );
938 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
939 if ( ref->count == 1 ) /* was last reference */
941 /* remove from list */
942 nitni_global_ref_remove( ref );
950 # List of additional files required to compile (FFI)
951 var extern_bodies = new Array[ExternFile]
953 # List of source files to copy over to the compile dir
954 var files_to_copy = new Array[String]
956 # This is used to avoid adding an extern file more than once
957 private var seen_extern = new ArraySet[String]
959 # Generate code that initialize the attributes on a new instance
960 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
962 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
963 self.mainmodule.linearize_mclassdefs(cds)
965 for npropdef in modelbuilder.collect_attr_propdef(cd) do
966 npropdef.init_expr(v, recv)
971 # Generate code that check if an attribute is correctly initialized
972 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
974 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
975 self.mainmodule.linearize_mclassdefs(cds)
977 for npropdef in modelbuilder.collect_attr_propdef(cd) do
978 npropdef.check_expr(v, recv)
985 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
986 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
987 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
988 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
990 protected fun init_count_type_test_tags: HashMap[String, Int]
992 var res = new HashMap[String, Int]
993 for tag in count_type_test_tags do
999 # Display stats about compilation process
1003 # * type tests against resolved types (`x
isa Collection[Animal]`)
1004 # * type tests against unresolved types (`x
isa Collection[E
]`)
1005 # * type tests skipped
1006 # * type tests total
1009 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1010 print "# static count_type_test"
1011 print "\tresolved:\tunresolved\tskipped\ttotal"
1012 var count_type_test_total = init_count_type_test_tags
1013 count_type_test_resolved["total"] = 0
1014 count_type_test_unresolved["total"] = 0
1015 count_type_test_skipped["total"] = 0
1016 count_type_test_total["total"] = 0
1017 for tag in count_type_test_tags do
1018 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1019 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1020 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1021 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1022 count_type_test_total["total"] += count_type_test_total[tag]
1024 var count_type_test = count_type_test_total["total"]
1025 var tags = count_type_test_tags.to_a
1029 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1030 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1031 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1032 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1038 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1041 # A file unit (may be more than one file if
1042 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1045 var writers = new Array[CodeWriter]
1046 var required_declarations = new HashSet[String]
1049 # Where to store generated lines
1052 var lines: List[String] = new List[String]
1053 var decl_lines: List[String] = new List[String]
1055 # Add a line in the main part of the generated C
1056 fun add(s: String) do self.lines.add(s)
1059 # (used for local or global declaration)
1060 fun add_decl(s: String) do self.decl_lines.add(s)
1064 file.writers.add(self)
1068 # A visitor on the AST of property definition that generate the C code.
1069 abstract class AbstractCompilerVisitor
1071 type COMPILER: AbstractCompiler
1073 # The associated compiler
1074 var compiler: COMPILER
1076 # The current visited AST node
1077 var current_node: nullable ANode = null is writable
1079 # The current `StaticFrame`
1080 var frame: nullable StaticFrame = null is writable
1082 # Alias for self.compiler.mainmodule.object_type
1083 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1085 # Alias for self.compiler.mainmodule.bool_type
1086 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1088 var writer: CodeWriter is noinit
1092 self.writer = new CodeWriter(compiler.files.last)
1095 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1096 fun get_property(name: String, recv: MType): MMethod
1098 assert recv isa MClassType
1099 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1102 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1104 var initializers = callsite.mpropdef.initializers
1105 if not initializers.is_empty then
1106 var recv = arguments.first
1109 for p in initializers do
1110 if p isa MMethod then
1112 for x in p.intro.msignature.mparameters do
1113 args.add arguments[i]
1117 else if p isa MAttribute then
1118 self.write_attribute(p, recv, arguments[i])
1122 assert i == arguments.length
1124 return self.send(callsite.mproperty, [recv])
1127 return self.send(callsite.mproperty, arguments)
1130 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1132 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1134 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1136 # Return an element of a native array.
1137 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1138 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1140 # Store an element in a native array.
1141 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1142 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1144 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1145 # This method is used to manage varargs in signatures and returns the real array
1146 # of runtime variables to use in the call.
1147 fun varargize(mpropdef: MMethodDef, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1149 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1150 var res = new Array[RuntimeVariable]
1153 if args.is_empty then return res
1155 var vararg_rank = msignature.vararg_rank
1156 var vararg_len = args.length - msignature.arity
1157 if vararg_len < 0 then vararg_len = 0
1159 for i in [0..msignature.arity[ do
1160 if i == vararg_rank then
1162 if ne isa AVarargExpr then
1163 var e = self.expr(ne.n_expr, null)
1167 var vararg = new Array[RuntimeVariable]
1168 for j in [vararg_rank..vararg_rank+vararg_len] do
1169 var e = self.expr(args[j], null)
1172 var elttype = msignature.mparameters[vararg_rank].mtype
1173 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1177 if i > vararg_rank then j += vararg_len
1178 var e = self.expr(args[j], null)
1187 # Anchor a type to the main module and the current receiver
1188 fun anchor(mtype: MType): MType
1190 if not mtype.need_anchor then return mtype
1191 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1194 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1196 if not mtype.need_anchor then return mtype
1197 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1200 # Unsafely cast a value to a new type
1201 # ie the result share the same C variable but my have a different mcasttype
1202 # NOTE: if the adaptation is useless then `value
` is returned as it.
1203 # ENSURE: `result
.name
== value
.name
`
1204 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1206 mtype = self.anchor(mtype)
1207 var valmtype = value.mcasttype
1208 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1212 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1213 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1216 var res = new RuntimeVariable(value.name, valmtype, mtype)
1221 # Generate a super call from a method definition
1222 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1224 # Adapt the arguments of a method according to targetted `MMethodDef`
1225 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1227 # Unbox all the arguments of a method when implemented `extern` or `intern`
1228 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1230 # Box or unbox a value to another type iff a C type conversion is needed
1231 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1232 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1234 # Box extern classes to be used in the generated code
1235 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1237 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1238 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1240 # Generate a polymorphic subtype test
1241 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1243 # Generate the code required to dynamically check if 2 objects share the same runtime type
1244 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1246 # Generate a Nit "is" for two runtime_variables
1247 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1251 # Generate a static call on a method definition
1252 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1254 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1255 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1257 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1258 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1260 assert t isa MClassType
1261 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1262 return self.call(propdef, t, args)
1265 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1266 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1268 assert t isa MClassType
1269 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1270 return self.call(m, t, args)
1273 # Attributes handling
1275 # Generate a polymorphic attribute is_set test
1276 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1278 # Generate a polymorphic attribute read
1279 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1281 # Generate a polymorphic attribute write
1282 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1286 # Add a check and an abort for a null receiver if needed
1287 fun check_recv_notnull(recv: RuntimeVariable)
1289 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1291 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1293 self.add("if (unlikely({recv} == NULL)) \{")
1294 self.add_abort("Receiver is null")
1301 private var names = new HashSet[String]
1302 private var last: Int = 0
1304 # Return a new name based on `s
` and unique in the visitor
1305 fun get_name(s: String): String
1307 if not self.names.has(s) then
1311 var i = self.last + 1
1314 if not self.names.has(s2) then
1323 # Return an unique and stable identifier associated with an escapemark
1324 fun escapemark_name(e: nullable EscapeMark): String
1327 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1329 if name == null then name = "label"
1330 name = get_name(name)
1331 frame.escapemark_names[e] = name
1335 # Insert a C label for associated with an escapemark
1336 fun add_escape_label(e: nullable EscapeMark)
1338 if e == null then return
1339 if e.escapes.is_empty then return
1340 add("BREAK_{escapemark_name(e)}: (void)0;")
1343 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1344 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1345 fun class_name_string(value: RuntimeVariable): String is abstract
1347 # Variables handling
1349 protected var variables = new HashMap[Variable, RuntimeVariable]
1351 # Return the local runtime_variable associated to a Nit local variable
1352 fun variable(variable: Variable): RuntimeVariable
1354 if self.variables.has_key(variable) then
1355 return self.variables[variable]
1357 var name = self.get_name("var_{variable.name}")
1358 var mtype = variable.declared_type.as(not null)
1359 mtype = self.anchor(mtype)
1360 var res = new RuntimeVariable(name, mtype, mtype)
1361 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1362 self.variables[variable] = res
1367 # Return a new uninitialized local runtime_variable
1368 fun new_var(mtype: MType): RuntimeVariable
1370 mtype = self.anchor(mtype)
1371 var name = self.get_name("var")
1372 var res = new RuntimeVariable(name, mtype, mtype)
1373 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1377 # The difference with `new_var
` is the C static type of the local variable
1378 fun new_var_extern(mtype: MType): RuntimeVariable
1380 mtype = self.anchor(mtype)
1381 var name = self.get_name("var")
1382 var res = new RuntimeVariable(name, mtype, mtype)
1383 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1387 # Return a new uninitialized named runtime_variable
1388 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1390 mtype = self.anchor(mtype)
1391 var res = new RuntimeVariable(name, mtype, mtype)
1392 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1396 # Correctly assign a left and a right value
1397 # Boxing and unboxing is performed if required
1398 fun assign(left, right: RuntimeVariable)
1400 right = self.autobox(right, left.mtype)
1401 self.add("{left} = {right};")
1404 # Generate instances
1406 # Generate a alloc-instance + init-attributes
1407 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1409 # Allocate and init attributes of an instance of a standard or extern class
1411 # Does not support universals and the pseudo-internal `NativeArray` class.
1412 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1415 var ctype = mtype.ctype
1416 assert mtype.mclass.name != "NativeArray"
1417 if not mtype.is_c_primitive then
1418 recv = init_instance(mtype)
1419 else if ctype == "char*" then
1420 recv = new_expr("NULL/*special!*/", mtype)
1422 recv = new_expr("({ctype})0/*special!*/", mtype)
1427 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1428 fun set_finalizer(recv: RuntimeVariable)
1430 var mtype = recv.mtype
1431 var finalizable_type = compiler.mainmodule.finalizable_type
1432 if finalizable_type != null and not mtype.need_anchor and
1433 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1434 add "gc_register_finalizer({recv});"
1438 # The currently processed module
1440 # alias for `compiler
.mainmodule
`
1441 fun mmodule: MModule do return compiler.mainmodule
1443 # Generate an integer value
1444 fun int_instance(value: Int): RuntimeVariable
1446 var t = mmodule.int_type
1447 var res = new RuntimeVariable("{value.to_s}l", t, t)
1451 # Generate a char value
1452 fun char_instance(value: Char): RuntimeVariable
1454 var t = mmodule.char_type
1455 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1459 # Generate a float value
1461 # FIXME pass a Float, not a string
1462 fun float_instance(value: String): RuntimeVariable
1464 var t = mmodule.float_type
1465 var res = new RuntimeVariable("{value}", t, t)
1469 # Generate an integer value
1470 fun bool_instance(value: Bool): RuntimeVariable
1472 var s = if value then "1" else "0"
1473 var res = new RuntimeVariable(s, bool_type, bool_type)
1477 # Generate the `null` value
1478 fun null_instance: RuntimeVariable
1480 var t = compiler.mainmodule.model.null_type
1481 var res = new RuntimeVariable("((val*)NULL)", t, t)
1485 # Generate a string value
1486 fun string_instance(string: String): RuntimeVariable
1488 var mtype = mmodule.string_type
1489 var name = self.get_name("varonce")
1490 self.add_decl("static {mtype.ctype} {name};")
1491 var res = self.new_var(mtype)
1492 self.add("if (likely({name}!=NULL)) \{")
1493 self.add("{res} = {name};")
1494 self.add("\} else \{")
1495 var native_mtype = mmodule.native_string_type
1496 var nat = self.new_var(native_mtype)
1497 self.add("{nat} = \"{string.escape_to_c}\";")
1498 var length = self.int_instance(string.length)
1499 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1500 self.add("{name} = {res};")
1505 fun value_instance(object: Object): RuntimeVariable
1507 if object isa Int then
1508 return int_instance(object)
1509 else if object isa Bool then
1510 return bool_instance(object)
1511 else if object isa String then
1512 return string_instance(object)
1518 # Generate an array value
1519 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1521 # Get an instance of a array for a vararg
1522 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1526 # Add a line in the main part of the generated C
1527 fun add(s: String) do self.writer.lines.add(s)
1530 # (used for local or global declaration)
1531 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1533 # Request the presence of a global declaration
1534 fun require_declaration(key: String)
1536 var reqs = self.writer.file.required_declarations
1537 if reqs.has(key) then return
1539 var node = current_node
1540 if node != null then compiler.requirers_of_declarations[key] = node
1543 # Add a declaration in the local-header
1544 # The declaration is ensured to be present once
1545 fun declare_once(s: String)
1547 self.compiler.provide_declaration(s, s)
1548 self.require_declaration(s)
1551 # Look for a needed .h and .c file for a given module
1552 # This is used for the legacy FFI
1553 fun add_extern(mmodule: MModule)
1555 var file = mmodule.location.file.filename
1556 file = file.strip_extension(".nit")
1557 var tryfile = file + ".nit.h"
1558 if tryfile.file_exists then
1559 self.declare_once("#include \"{tryfile.basename("")}\"")
1560 self.compiler.files_to_copy.add(tryfile)
1562 tryfile = file + "_nit.h"
1563 if tryfile.file_exists then
1564 self.declare_once("#include \"{tryfile.basename("")}\"")
1565 self.compiler.files_to_copy.add(tryfile)
1568 if self.compiler.seen_extern.has(file) then return
1569 self.compiler.seen_extern.add(file)
1570 tryfile = file + ".nit.c"
1571 if not tryfile.file_exists then
1572 tryfile = file + "_nit.c"
1573 if not tryfile.file_exists then return
1575 var f = new ExternCFile(tryfile.basename(""), "")
1576 self.compiler.extern_bodies.add(f)
1577 self.compiler.files_to_copy.add(tryfile)
1580 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1581 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1583 var res = new_var(mtype)
1584 self.add("{res} = {cexpr};")
1588 # Generate generic abort
1589 # used by aborts, asserts, casts, etc.
1590 fun add_abort(message: String)
1592 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1598 if self.current_node != null and self.current_node.location.file != null and
1599 self.current_node.location.file.mmodule != null then
1600 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1601 self.require_declaration(f)
1602 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1604 self.add("PRINT_ERROR(\"\\n\");")
1606 self.add("fatal_exit(1);")
1609 # Add a dynamic cast
1610 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1612 var res = self.type_test(value, mtype, tag)
1613 self.add("if (unlikely(!{res})) \{")
1614 var cn = self.class_name_string(value)
1615 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1620 # Generate a return with the value `s
`
1621 fun ret(s: RuntimeVariable)
1623 self.assign(self.frame.returnvar.as(not null), s)
1624 self.add("goto {self.frame.returnlabel.as(not null)};")
1627 # Compile a statement (if any)
1628 fun stmt(nexpr: nullable AExpr)
1630 if nexpr == null then return
1632 var narray = nexpr.comprehension
1633 if narray != null then
1634 var recv = frame.comprehension.as(not null)
1635 var val = expr(nexpr, narray.element_mtype)
1636 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1640 var old = self.current_node
1641 self.current_node = nexpr
1643 self.current_node = old
1646 # Compile an expression an return its result
1647 # `mtype
` is the expected return type, pass null if no specific type is expected.
1648 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1650 var old = self.current_node
1651 self.current_node = nexpr
1652 var res = nexpr.expr(self).as(not null)
1653 if mtype != null then
1654 mtype = self.anchor(mtype)
1655 res = self.autobox(res, mtype)
1657 res = autoadapt(res, nexpr.mtype.as(not null))
1658 var implicit_cast_to = nexpr.implicit_cast_to
1659 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1660 add_cast(res, implicit_cast_to, "auto")
1661 res = autoadapt(res, implicit_cast_to)
1663 self.current_node = old
1667 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1668 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1670 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1671 fun debug(message: String)
1673 var node = self.current_node
1674 if node == null then
1675 print "?: {message}"
1679 self.add("/* DEBUG: {message} */")
1683 # A C function associated to a Nit method
1684 # Because of customization, a given Nit method can be compiler more that once
1685 abstract class AbstractRuntimeFunction
1687 type COMPILER: AbstractCompiler
1688 type VISITOR: AbstractCompilerVisitor
1690 # The associated Nit method
1691 var mmethoddef: MMethodDef
1693 # The mangled c name of the runtime_function
1694 # Subclasses should redefine `build_c_name
` instead
1697 var res = self.c_name_cache
1698 if res != null then return res
1699 res = self.build_c_name
1700 self.c_name_cache = res
1704 # Non cached version of `c_name
`
1705 protected fun build_c_name: String is abstract
1707 protected var c_name_cache: nullable String = null is writable
1709 # Implements a call of the runtime_function
1710 # May inline the body or generate a C function call
1711 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1713 # Generate the code for the `AbstractRuntimeFunction`
1714 # Warning: compile more than once compilation makes CC unhappy
1715 fun compile_to_c(compiler: COMPILER) is abstract
1718 # A runtime variable hold a runtime value in C.
1719 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1721 # 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.
1722 class RuntimeVariable
1723 # The name of the variable in the C code
1726 # The static type of the variable (as declard in C)
1729 # The current casted type of the variable (as known in Nit)
1730 var mcasttype: MType is writable
1732 # If the variable exaclty a mcasttype?
1733 # false (usual value) means that the variable is a mcasttype or a subtype.
1734 var is_exact: Bool = false is writable
1738 assert not mtype.need_anchor
1739 assert not mcasttype.need_anchor
1742 redef fun to_s do return name
1747 if self.is_exact then
1748 exact_str = " exact"
1753 if self.mtype == self.mcasttype then
1754 type_str = "{mtype}{exact_str}"
1756 type_str = "{mtype}({mcasttype}{exact_str})"
1758 return "<{name}:{type_str}>"
1762 # The static context of a visited property in a `AbstractCompilerVisitor`
1765 type VISITOR: AbstractCompilerVisitor
1767 # The associated visitor
1768 var visitor: VISITOR
1770 # The executed property.
1771 # A Method in case of a call, an attribute in case of a default initialization.
1772 var mpropdef: MPropDef
1774 # The static type of the receiver
1775 var receiver: MClassType
1777 # Arguments of the method (the first is the receiver)
1778 var arguments: Array[RuntimeVariable]
1780 # The runtime_variable associated to the return (in a function)
1781 var returnvar: nullable RuntimeVariable = null is writable
1783 # The label at the end of the property
1784 var returnlabel: nullable String = null is writable
1786 # Labels associated to a each escapemarks.
1787 # Because of inlinings, escape-marks must be associated to their context (the frame)
1788 private var escapemark_names = new HashMap[EscapeMark, String]
1790 # The array comprehension currently filled, if any
1791 private var comprehension: nullable RuntimeVariable = null
1795 # Return the C type associated to a given Nit static type
1796 fun ctype: String do return "val*"
1798 # C type outside of the compiler code and in boxes
1799 fun ctype_extern: String do return "val*"
1801 # Short name of the `ctype
` to use in unions
1802 fun ctypename: String do return "val"
1804 # Is the associated C type a primitive one?
1806 # ENSURE `result
== (ctype
!= "val*")`
1807 fun is_c_primitive: Bool do return false
1810 redef class MClassType
1812 redef var ctype is lazy do
1813 if mclass.name == "Int" then
1815 else if mclass.name == "Bool" then
1817 else if mclass.name == "Char" then
1819 else if mclass.name == "Float" then
1821 else if mclass.name == "NativeString" then
1823 else if mclass.name == "NativeArray" then
1830 redef var is_c_primitive is lazy do return ctype != "val*"
1832 redef fun ctype_extern: String
1834 if mclass.kind == extern_kind then
1841 redef fun ctypename: String
1843 if mclass.name == "Int" then
1845 else if mclass.name == "Bool" then
1847 else if mclass.name == "Char" then
1849 else if mclass.name == "Float" then
1851 else if mclass.name == "NativeString" then
1853 else if mclass.name == "NativeArray" then
1854 #return "{self.arguments.first.ctype}*"
1862 redef class MPropDef
1863 type VISITOR: AbstractCompilerVisitor
1866 redef class MMethodDef
1867 # Can the body be inlined?
1868 fun can_inline(v: VISITOR): Bool
1870 if is_abstract then return true
1871 var modelbuilder = v.compiler.modelbuilder
1872 var node = modelbuilder.mpropdef2node(self)
1873 if node isa APropdef then
1874 return node.can_inline
1875 else if node isa AClassdef then
1876 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1883 # Inline the body in another visitor
1884 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1886 var modelbuilder = v.compiler.modelbuilder
1887 var val = constant_value
1888 var node = modelbuilder.mpropdef2node(self)
1891 var cn = v.class_name_string(arguments.first)
1892 v.current_node = node
1893 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1898 if node isa APropdef then
1899 var oldnode = v.current_node
1900 v.current_node = node
1901 self.compile_parameter_check(v, arguments)
1902 node.compile_to_c(v, self, arguments)
1903 v.current_node = oldnode
1904 else if node isa AClassdef then
1905 var oldnode = v.current_node
1906 v.current_node = node
1907 self.compile_parameter_check(v, arguments)
1908 node.compile_to_c(v, self, arguments)
1909 v.current_node = oldnode
1910 else if val != null then
1911 v.ret(v.value_instance(val))
1918 # Generate type checks in the C code to check covariant parameters
1919 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1921 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1923 for i in [0..msignature.arity[ do
1924 # skip test for vararg since the array is instantiated with the correct polymorphic type
1925 if msignature.vararg_rank == i then continue
1927 # skip if the cast is not required
1928 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1929 if not origmtype.need_anchor then continue
1931 # get the parameter type
1932 var mtype = self.msignature.mparameters[i].mtype
1935 # note that v decides if and how to implements the cast
1936 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1937 v.add_cast(arguments[i+1], mtype, "covariance")
1944 redef class APropdef
1945 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1947 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1948 debug("Not yet implemented")
1951 fun can_inline: Bool do return true
1954 redef class AMethPropdef
1955 redef fun compile_to_c(v, mpropdef, arguments)
1957 # Call the implicit super-init
1958 var auto_super_inits = self.auto_super_inits
1959 if auto_super_inits != null then
1960 var args = [arguments.first]
1961 for auto_super_init in auto_super_inits do
1962 assert auto_super_init.mproperty != mpropdef.mproperty
1964 for i in [0..auto_super_init.msignature.arity+1[ do
1965 args.add(arguments[i])
1967 assert auto_super_init.mproperty != mpropdef.mproperty
1968 v.compile_callsite(auto_super_init, args)
1971 if auto_super_call then
1972 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1975 # Try special compilation
1976 if mpropdef.is_intern then
1977 if compile_intern_to_c(v, mpropdef, arguments) then return
1978 else if mpropdef.is_extern then
1979 if mpropdef.mproperty.is_init then
1980 if compile_externinit_to_c(v, mpropdef, arguments) then return
1982 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1986 # Compile block if any
1987 var n_block = n_block
1988 if n_block != null then
1989 for i in [0..mpropdef.msignature.arity[ do
1990 var variable = self.n_signature.n_params[i].variable.as(not null)
1991 v.assign(v.variable(variable), arguments[i+1])
1998 var cn = v.class_name_string(arguments.first)
1999 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2003 redef fun can_inline
2005 if self.auto_super_inits != null then return false
2006 var nblock = self.n_block
2007 if nblock == null then return true
2008 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2009 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2013 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2015 var pname = mpropdef.mproperty.name
2016 var cname = mpropdef.mclassdef.mclass.name
2017 var ret = mpropdef.msignature.return_mtype
2019 ret = v.resolve_for(ret, arguments.first)
2021 if pname != "==" and pname != "!=" then
2022 v.adapt_signature(mpropdef, arguments)
2023 v.unbox_signature_extern(mpropdef, arguments)
2025 if cname == "Int" then
2026 if pname == "output" then
2027 v.add("printf(\"%ld\\n\", {arguments.first});")
2029 else if pname == "object_id" then
2030 v.ret(arguments.first)
2032 else if pname == "+" then
2033 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2035 else if pname == "-" then
2036 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2038 else if pname == "unary -" then
2039 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2041 else if pname == "*" then
2042 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2044 else if pname == "/" then
2045 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2047 else if pname == "%" then
2048 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2050 else if pname == "lshift" then
2051 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2053 else if pname == "rshift" then
2054 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2056 else if pname == "==" then
2057 v.ret(v.equal_test(arguments[0], arguments[1]))
2059 else if pname == "!=" then
2060 var res = v.equal_test(arguments[0], arguments[1])
2061 v.ret(v.new_expr("!{res}", ret.as(not null)))
2063 else if pname == "<" then
2064 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2066 else if pname == ">" then
2067 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2069 else if pname == "<=" then
2070 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2072 else if pname == ">=" then
2073 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2075 else if pname == "to_f" then
2076 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2078 else if pname == "ascii" then
2079 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2082 else if cname == "Char" then
2083 if pname == "output" then
2084 v.add("printf(\"%c\", {arguments.first});")
2086 else if pname == "object_id" then
2087 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2089 else if pname == "successor" then
2090 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2092 else if pname == "predecessor" then
2093 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2095 else if pname == "==" then
2096 v.ret(v.equal_test(arguments[0], arguments[1]))
2098 else if pname == "!=" then
2099 var res = v.equal_test(arguments[0], arguments[1])
2100 v.ret(v.new_expr("!{res}", ret.as(not null)))
2102 else if pname == "<" then
2103 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2105 else if pname == ">" then
2106 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2108 else if pname == "<=" then
2109 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2111 else if pname == ">=" then
2112 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2114 else if pname == "to_i" then
2115 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2117 else if pname == "ascii" then
2118 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2121 else if cname == "Bool" then
2122 if pname == "output" then
2123 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2125 else if pname == "object_id" then
2126 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2128 else if pname == "==" then
2129 v.ret(v.equal_test(arguments[0], arguments[1]))
2131 else if pname == "!=" then
2132 var res = v.equal_test(arguments[0], arguments[1])
2133 v.ret(v.new_expr("!{res}", ret.as(not null)))
2136 else if cname == "Float" then
2137 if pname == "output" then
2138 v.add("printf(\"%f\\n\", {arguments.first});")
2140 else if pname == "object_id" then
2141 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2143 else if pname == "+" then
2144 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2146 else if pname == "-" then
2147 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2149 else if pname == "unary -" then
2150 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2152 else if pname == "succ" then
2153 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2155 else if pname == "prec" then
2156 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2158 else if pname == "*" then
2159 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2161 else if pname == "/" then
2162 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2164 else if pname == "==" then
2165 v.ret(v.equal_test(arguments[0], arguments[1]))
2167 else if pname == "!=" then
2168 var res = v.equal_test(arguments[0], arguments[1])
2169 v.ret(v.new_expr("!{res}", ret.as(not null)))
2171 else if pname == "<" then
2172 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2174 else if pname == ">" then
2175 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2177 else if pname == "<=" then
2178 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2180 else if pname == ">=" then
2181 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2183 else if pname == "to_i" then
2184 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2187 else if cname == "NativeString" then
2188 if pname == "[]" then
2189 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2191 else if pname == "[]=" then
2192 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2194 else if pname == "copy_to" then
2195 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2197 else if pname == "atoi" then
2198 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2200 else if pname == "fast_cstring" then
2201 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2203 else if pname == "new" then
2204 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2207 else if cname == "NativeArray" then
2208 v.native_array_def(pname, ret, arguments)
2211 if pname == "exit" then
2212 v.add("exit({arguments[1]});")
2214 else if pname == "sys" then
2215 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2217 else if pname == "calloc_string" then
2218 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2220 else if pname == "calloc_array" then
2221 v.calloc_array(ret.as(not null), arguments)
2223 else if pname == "object_id" then
2224 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2226 else if pname == "is_same_type" then
2227 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2229 else if pname == "is_same_instance" then
2230 v.ret(v.equal_test(arguments[0], arguments[1]))
2232 else if pname == "output_class_name" then
2233 var nat = v.class_name_string(arguments.first)
2234 v.add("printf(\"%s\\n\", {nat});")
2236 else if pname == "native_class_name" then
2237 var nat = v.class_name_string(arguments.first)
2238 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2240 else if pname == "force_garbage_collection" then
2241 v.add("nit_gcollect();")
2243 else if pname == "native_argc" then
2244 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2246 else if pname == "native_argv" then
2247 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2253 # Compile an extern method
2254 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2255 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2258 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2259 if at != null and at.n_args.length == 1 then
2260 externname = at.arg_as_string(v.compiler.modelbuilder)
2261 if externname == null then return false
2265 v.add_extern(mpropdef.mclassdef.mmodule)
2266 var res: nullable RuntimeVariable = null
2267 var ret = mpropdef.msignature.return_mtype
2269 ret = v.resolve_for(ret, arguments.first)
2270 res = v.new_var_extern(ret)
2272 v.adapt_signature(mpropdef, arguments)
2273 v.unbox_signature_extern(mpropdef, arguments)
2276 v.add("{externname}({arguments.join(", ")});")
2278 v.add("{res} = {externname}({arguments.join(", ")});")
2279 res = v.box_extern(res, ret.as(not null))
2285 # Compile an extern factory
2286 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2287 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2290 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2292 externname = at.arg_as_string(v.compiler.modelbuilder)
2293 if externname == null then return false
2297 v.add_extern(mpropdef.mclassdef.mmodule)
2298 v.adapt_signature(mpropdef, arguments)
2299 v.unbox_signature_extern(mpropdef, arguments)
2300 var ret = arguments.first.mtype
2301 var res = v.new_var_extern(ret)
2305 v.add("{res} = {externname}({arguments.join(", ")});")
2306 res = v.box_extern(res, ret)
2312 redef class AAttrPropdef
2313 redef fun can_inline: Bool do return not is_lazy
2315 redef fun compile_to_c(v, mpropdef, arguments)
2317 if mpropdef == mreadpropdef then
2318 assert arguments.length == 1
2319 var recv = arguments.first
2323 var ret = self.mpropdef.static_mtype
2324 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2325 var guard = self.mlazypropdef.mproperty
2327 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2329 set = v.read_attribute(guard, recv)
2331 v.add("if(likely({set})) \{")
2332 res = v.read_attribute(self.mpropdef.mproperty, recv)
2335 var value = evaluate_expr(v, recv)
2337 v.assign(res, value)
2339 var true_v = v.bool_instance(true)
2340 v.write_attribute(guard, arguments.first, true_v)
2344 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2346 v.assign(v.frame.returnvar.as(not null), res)
2347 else if mpropdef == mwritepropdef then
2348 assert arguments.length == 2
2349 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2351 var ret = self.mpropdef.static_mtype
2352 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2354 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2362 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2364 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2367 # Evaluate, store and return the default value of the attribute
2368 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2370 var oldnode = v.current_node
2371 v.current_node = self
2372 var old_frame = v.frame
2373 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.undecorate.as(MClassType), [recv])
2377 var mtype = self.mpropdef.static_mtype
2378 assert mtype != null
2380 var nexpr = self.n_expr
2381 var nblock = self.n_block
2382 if nexpr != null then
2383 value = v.expr(nexpr, mtype)
2384 else if nblock != null then
2385 value = v.new_var(mtype)
2386 frame.returnvar = value
2387 frame.returnlabel = v.get_name("RET_LABEL")
2390 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2396 v.write_attribute(self.mpropdef.mproperty, recv, value)
2399 v.current_node = oldnode
2404 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2406 var nexpr = self.n_expr
2407 if nexpr != null then return
2409 var oldnode = v.current_node
2410 v.current_node = self
2411 var old_frame = v.frame
2412 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2414 # Force read to check the initialization
2415 v.read_attribute(self.mpropdef.mproperty, recv)
2417 v.current_node = oldnode
2421 redef class AClassdef
2422 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2424 if mpropdef == self.mfree_init then
2425 assert mpropdef.mproperty.is_root_init
2426 assert arguments.length == 1
2427 if not mpropdef.is_intro then
2428 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2438 # Try to compile self as an expression
2439 # Do not call this method directly, use `v
.expr
` instead
2440 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2442 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2443 var mtype = self.mtype
2444 if mtype == null then
2447 var res = v.new_var(mtype)
2448 v.add("/* {res} = NOT YET {class_name} */")
2453 # Try to compile self as a statement
2454 # Do not call this method directly, use `v
.stmt
` instead
2455 private fun stmt(v: AbstractCompilerVisitor)
2461 redef class ABlockExpr
2464 for e in self.n_expr do v.stmt(e)
2468 var last = self.n_expr.last
2469 for e in self.n_expr do
2470 if e == last then break
2473 return v.expr(last, null)
2477 redef class AVardeclExpr
2480 var variable = self.variable.as(not null)
2481 var ne = self.n_expr
2483 var i = v.expr(ne, variable.declared_type)
2484 v.assign(v.variable(variable), i)
2489 redef class AVarExpr
2492 var res = v.variable(self.variable.as(not null))
2493 var mtype = self.mtype.as(not null)
2494 return v.autoadapt(res, mtype)
2498 redef class AVarAssignExpr
2501 var variable = self.variable.as(not null)
2502 var i = v.expr(self.n_value, variable.declared_type)
2503 v.assign(v.variable(variable), i)
2508 redef class AVarReassignExpr
2511 var variable = self.variable.as(not null)
2512 var vari = v.variable(variable)
2513 var value = v.expr(self.n_value, variable.declared_type)
2514 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2516 v.assign(v.variable(variable), res)
2520 redef class ASelfExpr
2521 redef fun expr(v) do return v.frame.arguments.first
2524 redef class AEscapeExpr
2525 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2528 redef class AReturnExpr
2531 var nexpr = self.n_expr
2532 if nexpr != null then
2533 var returnvar = v.frame.returnvar.as(not null)
2534 var i = v.expr(nexpr, returnvar.mtype)
2535 v.assign(returnvar, i)
2537 v.add("goto {v.frame.returnlabel.as(not null)};")
2541 redef class AAbortExpr
2542 redef fun stmt(v) do v.add_abort("Aborted")
2548 var cond = v.expr_bool(self.n_expr)
2549 v.add("if ({cond})\{")
2558 var res = v.new_var(self.mtype.as(not null))
2559 var cond = v.expr_bool(self.n_expr)
2560 v.add("if ({cond})\{")
2561 v.assign(res, v.expr(self.n_then.as(not null), null))
2563 v.assign(res, v.expr(self.n_else.as(not null), null))
2569 redef class AIfexprExpr
2572 var res = v.new_var(self.mtype.as(not null))
2573 var cond = v.expr_bool(self.n_expr)
2574 v.add("if ({cond})\{")
2575 v.assign(res, v.expr(self.n_then, null))
2577 v.assign(res, v.expr(self.n_else, null))
2586 v.stmt(self.n_block)
2587 v.add_escape_label(break_mark)
2591 redef class AWhileExpr
2595 var cond = v.expr_bool(self.n_expr)
2596 v.add("if (!{cond}) break;")
2597 v.stmt(self.n_block)
2598 v.add_escape_label(continue_mark)
2600 v.add_escape_label(break_mark)
2604 redef class ALoopExpr
2608 v.stmt(self.n_block)
2609 v.add_escape_label(continue_mark)
2611 v.add_escape_label(break_mark)
2615 redef class AForExpr
2618 var cl = v.expr(self.n_expr, null)
2619 var it_meth = self.method_iterator
2620 assert it_meth != null
2621 var it = v.compile_callsite(it_meth, [cl])
2624 var isok_meth = self.method_is_ok
2625 assert isok_meth != null
2626 var ok = v.compile_callsite(isok_meth, [it])
2628 v.add("if(!{ok}) break;")
2629 if self.variables.length == 1 then
2630 var item_meth = self.method_item
2631 assert item_meth != null
2632 var i = v.compile_callsite(item_meth, [it])
2634 v.assign(v.variable(variables.first), i)
2635 else if self.variables.length == 2 then
2636 var key_meth = self.method_key
2637 assert key_meth != null
2638 var i = v.compile_callsite(key_meth, [it])
2640 v.assign(v.variable(variables[0]), i)
2641 var item_meth = self.method_item
2642 assert item_meth != null
2643 i = v.compile_callsite(item_meth, [it])
2645 v.assign(v.variable(variables[1]), i)
2649 v.stmt(self.n_block)
2650 v.add_escape_label(continue_mark)
2651 var next_meth = self.method_next
2652 assert next_meth != null
2653 v.compile_callsite(next_meth, [it])
2655 v.add_escape_label(break_mark)
2657 var method_finish = self.method_finish
2658 if method_finish != null then
2659 # TODO: Find a way to call this also in long escape (e.g. return)
2660 v.compile_callsite(method_finish, [it])
2665 redef class AAssertExpr
2668 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2670 var cond = v.expr_bool(self.n_expr)
2671 v.add("if (unlikely(!{cond})) \{")
2675 v.add_abort("Assert '{nid.text}' failed")
2677 v.add_abort("Assert failed")
2686 var res = v.new_var(self.mtype.as(not null))
2687 var i1 = v.expr_bool(self.n_expr)
2688 v.add("if ({i1}) \{")
2691 var i2 = v.expr_bool(self.n_expr2)
2692 v.add("{res} = {i2};")
2698 redef class AImpliesExpr
2701 var res = v.new_var(self.mtype.as(not null))
2702 var i1 = v.expr_bool(self.n_expr)
2703 v.add("if (!{i1}) \{")
2706 var i2 = v.expr_bool(self.n_expr2)
2707 v.add("{res} = {i2};")
2713 redef class AAndExpr
2716 var res = v.new_var(self.mtype.as(not null))
2717 var i1 = v.expr_bool(self.n_expr)
2718 v.add("if (!{i1}) \{")
2721 var i2 = v.expr_bool(self.n_expr2)
2722 v.add("{res} = {i2};")
2728 redef class ANotExpr
2731 var cond = v.expr_bool(self.n_expr)
2732 return v.new_expr("!{cond}", self.mtype.as(not null))
2736 redef class AOrElseExpr
2739 var res = v.new_var(self.mtype.as(not null))
2740 var i1 = v.expr(self.n_expr, null)
2741 v.add("if ({i1}!=NULL) \{")
2744 var i2 = v.expr(self.n_expr2, null)
2751 redef class AIntExpr
2752 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2755 redef class AFloatExpr
2756 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2759 redef class ACharExpr
2760 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2763 redef class AArrayExpr
2766 var mtype = self.element_mtype.as(not null)
2767 var array = new Array[RuntimeVariable]
2768 var res = v.array_instance(array, mtype)
2770 var old_comprehension = v.frame.comprehension
2771 v.frame.comprehension = res
2772 for nexpr in self.n_exprs do
2775 v.frame.comprehension = old_comprehension
2781 redef class AStringFormExpr
2782 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2785 redef class ASuperstringExpr
2788 var type_string = mtype.as(not null)
2790 # Collect elements of the superstring
2791 var array = new Array[AExpr]
2792 for ne in self.n_exprs do
2793 # Drop literal empty string.
2794 # They appears in things like "{a}" that is ["", a, ""]
2795 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2799 # Store the allocated native array in a static variable
2801 var varonce = v.get_name("varonce")
2802 v.add("if (unlikely({varonce}==NULL)) \{")
2804 # The native array that will contains the elements to_s-ized.
2805 # For fast concatenation.
2806 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2808 v.add_decl("static {a.mtype.ctype} {varonce};")
2810 # Pre-fill the array with the literal string parts.
2811 # So they do not need to be filled again when reused
2812 for i in [0..array.length[ do
2814 if not ne isa AStringFormExpr then continue
2815 var e = v.expr(ne, null)
2816 v.native_array_set(a, i, e)
2820 # Take the native-array from the store.
2821 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2822 # WARNING: not thread safe! (FIXME?)
2823 v.add("{a} = {varonce};")
2824 v.add("{varonce} = NULL;")
2827 # Stringify the elements and put them in the native array
2828 var to_s_method = v.get_property("to_s", v.object_type)
2829 for i in [0..array.length[ do
2831 if ne isa AStringFormExpr then continue
2832 var e = v.expr(ne, null)
2833 # Skip the `to_s
` if the element is already a String
2834 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2835 e = v.send(to_s_method, [e]).as(not null)
2837 v.native_array_set(a, i, e)
2840 # Fast join the native string to get the result
2841 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2843 # We finish to work with the native array,
2844 # so store it so that it can be reused
2845 v.add("{varonce} = {a};")
2850 redef class ACrangeExpr
2853 var i1 = v.expr(self.n_expr, null)
2854 var i2 = v.expr(self.n_expr2, null)
2855 var mtype = self.mtype.as(MClassType)
2856 var res = v.init_instance(mtype)
2857 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2862 redef class AOrangeExpr
2865 var i1 = v.expr(self.n_expr, null)
2866 var i2 = v.expr(self.n_expr2, null)
2867 var mtype = self.mtype.as(MClassType)
2868 var res = v.init_instance(mtype)
2869 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2874 redef class ATrueExpr
2875 redef fun expr(v) do return v.bool_instance(true)
2878 redef class AFalseExpr
2879 redef fun expr(v) do return v.bool_instance(false)
2882 redef class ANullExpr
2883 redef fun expr(v) do return v.null_instance
2886 redef class AIsaExpr
2889 var i = v.expr(self.n_expr, null)
2890 return v.type_test(i, self.cast_type.as(not null), "isa")
2894 redef class AAsCastExpr
2897 var i = v.expr(self.n_expr, null)
2898 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2900 v.add_cast(i, self.mtype.as(not null), "as")
2905 redef class AAsNotnullExpr
2908 var i = v.expr(self.n_expr, null)
2909 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2911 if i.mtype.is_c_primitive then return i
2913 v.add("if (unlikely({i} == NULL)) \{")
2914 v.add_abort("Cast failed")
2920 redef class AParExpr
2921 redef fun expr(v) do return v.expr(self.n_expr, null)
2924 redef class AOnceExpr
2927 var mtype = self.mtype.as(not null)
2928 var name = v.get_name("varonce")
2929 var guard = v.get_name(name + "_guard")
2930 v.add_decl("static {mtype.ctype} {name};")
2931 v.add_decl("static int {guard};")
2932 var res = v.new_var(mtype)
2933 v.add("if (likely({guard})) \{")
2934 v.add("{res} = {name};")
2936 var i = v.expr(self.n_expr, mtype)
2937 v.add("{res} = {i};")
2938 v.add("{name} = {res};")
2939 v.add("{guard} = 1;")
2945 redef class ASendExpr
2948 var recv = v.expr(self.n_expr, null)
2949 var callsite = self.callsite.as(not null)
2950 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2951 return v.compile_callsite(callsite, args)
2955 redef class ASendReassignFormExpr
2958 var recv = v.expr(self.n_expr, null)
2959 var callsite = self.callsite.as(not null)
2960 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2962 var value = v.expr(self.n_value, null)
2964 var left = v.compile_callsite(callsite, args)
2967 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2971 v.compile_callsite(self.write_callsite.as(not null), args)
2975 redef class ASuperExpr
2978 var recv = v.frame.arguments.first
2980 var callsite = self.callsite
2981 if callsite != null then
2982 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
2984 # Add additional arguments for the super init call
2985 if args.length == 1 then
2986 for i in [0..callsite.msignature.arity[ do
2987 args.add(v.frame.arguments[i+1])
2991 var res = v.compile_callsite(callsite, args)
2995 var mpropdef = self.mpropdef.as(not null)
2996 var args = v.varargize(mpropdef, recv, self.n_args.n_exprs)
2997 if args.length == 1 then
2998 args = v.frame.arguments
3001 # stantard call-next-method
3002 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3006 redef class ANewExpr
3009 var mtype = self.recvtype
3010 assert mtype != null
3012 if mtype.mclass.name == "NativeArray" then
3013 assert self.n_args.n_exprs.length == 1
3014 var l = v.expr(self.n_args.n_exprs.first, null)
3015 assert mtype isa MGenericType
3016 var elttype = mtype.arguments.first
3017 return v.native_array_instance(elttype, l)
3020 var recv = v.init_instance_or_extern(mtype)
3022 var callsite = self.callsite.as(not null)
3023 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
3024 var res2 = v.compile_callsite(callsite, args)
3025 if res2 != null then
3026 #self.debug("got {res2} from {mproperty}. drop {recv}")
3033 redef class AAttrExpr
3036 var recv = v.expr(self.n_expr, null)
3037 var mproperty = self.mproperty.as(not null)
3038 return v.read_attribute(mproperty, recv)
3042 redef class AAttrAssignExpr
3045 var recv = v.expr(self.n_expr, null)
3046 var i = v.expr(self.n_value, null)
3047 var mproperty = self.mproperty.as(not null)
3048 v.write_attribute(mproperty, recv, i)
3053 redef class AAttrReassignExpr
3056 var recv = v.expr(self.n_expr, null)
3057 var value = v.expr(self.n_value, null)
3058 var mproperty = self.mproperty.as(not null)
3059 var attr = v.read_attribute(mproperty, recv)
3060 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3062 v.write_attribute(mproperty, recv, res)
3066 redef class AIssetAttrExpr
3069 var recv = v.expr(self.n_expr, null)
3070 var mproperty = self.mproperty.as(not null)
3071 return v.isset_attribute(mproperty, recv)
3075 redef class ADebugTypeExpr
3084 redef class Array[E]
3085 # Return a new `Array` with the elements only contened in self and not in `o
`
3086 fun -(o: Array[E]): Array[E] do
3087 var res = new Array[E]
3088 for e in self do if not o.has(e) then res.add(e)
3094 # All `MProperty` associated to all `MClassDef` of `mclass
`
3095 fun properties(mclass: MClass): Set[MProperty] do
3096 if not self.properties_cache.has_key(mclass) then
3097 var properties = new HashSet[MProperty]
3098 var parents = new Array[MClass]
3099 if self.flatten_mclass_hierarchy.has(mclass) then
3100 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3102 for parent in parents do
3103 properties.add_all(self.properties(parent))
3105 for mclassdef in mclass.mclassdefs do
3106 if not self.in_importation <= mclassdef.mmodule then continue
3107 for mprop in mclassdef.intro_mproperties do
3108 properties.add(mprop)
3111 self.properties_cache[mclass] = properties
3113 return properties_cache[mclass]
3115 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3117 # Write FFI and nitni results to file
3118 fun finalize_ffi(c: AbstractCompiler) do end
3120 # Give requided addinional system libraries (as given to LD_LIBS)
3121 # Note: can return null instead of an empty set
3122 fun collect_linker_libs: nullable Array[String] do return null
3125 # Create a tool context to handle options and paths
3126 var toolcontext = new ToolContext
3128 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3130 # We do not add other options, so process them now!
3131 toolcontext.process_options(args)
3133 # We need a model to collect stufs
3134 var model = new Model
3135 # An a model builder to parse files
3136 var modelbuilder = new ModelBuilder(model, toolcontext)
3138 var arguments = toolcontext.option_context.rest
3139 if arguments.length > 1 and toolcontext.opt_output.value != null then
3140 print "Error: --output needs a single source file. Do you prefer --dir?"
3144 # Here we load an process all modules passed on the command line
3145 var mmodules = modelbuilder.parse(arguments)
3147 if mmodules.is_empty then return
3148 modelbuilder.run_phases
3150 for mmodule in mmodules do
3151 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3153 toolcontext.run_global_phases(ms)