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 \"gc_chooser
.h\
"")
612 self.header
.add_decl
("#ifdef ANDROID")
613 self.header
.add_decl
(" #include <android/log.h>")
614 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
615 self.header
.add_decl
("#else")
616 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
617 self.header
.add_decl
("#endif")
619 compile_header_structs
620 compile_nitni_structs
622 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
623 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
624 # Signal handler function prototype
625 self.header
.add_decl
("void fatal_exit(int);")
627 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
630 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
631 self.header
.add_decl
("#define likely(x) (x)")
632 self.header
.add_decl
("#define unlikely(x) (x)")
633 else if gccd_disable
.has
("correct-likely") then
634 # invert the `likely` definition
635 # Used by masochists to bench the worst case
636 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
637 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
639 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
640 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
643 # Global variable used by intern methods
644 self.header
.add_decl
("extern int glob_argc;")
645 self.header
.add_decl
("extern char **glob_argv;")
646 self.header
.add_decl
("extern val *glob_sys;")
649 # Declaration of structures for live Nit types
650 protected fun compile_header_structs
is abstract
652 # Declaration of structures for nitni undelying the FFI
653 protected fun compile_nitni_structs
655 self.header
.add_decl
"""
656 /* Native reference to Nit objects */
657 /* This structure is used to represent every Nit type in extern methods and custom C code. */
659 struct nitni_ref *next,
660 *prev; /* adjacent global references in global list */
661 int count; /* number of time this global reference has been marked */
664 /* List of global references from C code to Nit objects */
665 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
666 struct nitni_global_ref_list_t {
667 struct nitni_ref *head, *tail;
669 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
671 /* Initializer of global reference list */
672 extern void nitni_global_ref_list_init();
674 /* Intern function to add a global reference to the list */
675 extern void nitni_global_ref_add( struct nitni_ref *ref );
677 /* Intern function to remove a global reference from the list */
678 extern void nitni_global_ref_remove( struct nitni_ref *ref );
680 /* Increase count on an existing global reference */
681 extern void nitni_global_ref_incr( struct nitni_ref *ref );
683 /* Decrease count on an existing global reference */
684 extern void nitni_global_ref_decr( struct nitni_ref *ref );
688 fun compile_finalizer_function
690 var finalizable_type
= mainmodule
.finalizable_type
691 if finalizable_type
== null then return
693 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
695 if finalize_meth
== null then
696 modelbuilder
.toolcontext
.error
(null, "The `Finalizable` class doesn't declare the `finalize` method.")
700 var v
= self.new_visitor
701 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
702 var recv
= v
.new_expr
("obj", finalizable_type
)
703 v
.send
(finalize_meth
, [recv
])
707 # Generate the main C function.
711 # * allocate the Sys object if it exists
712 # * call init if is exists
713 # * call main if it exists
714 fun compile_main_function
716 var v
= self.new_visitor
717 v
.add_decl
("#include <signal.h>")
718 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
719 var platform
= target_platform
721 if not platform
.supports_libunwind
then ost
= "none"
723 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
725 if ost
== "nitstack" or ost
== "libunwind" then
726 v
.add_decl
("#define UNW_LOCAL_ONLY")
727 v
.add_decl
("#include <libunwind.h>")
728 if ost
== "nitstack" then
729 v
.add_decl
("#include \"c_functions_hash
.h\
"")
732 v
.add_decl
("int glob_argc;")
733 v
.add_decl
("char **glob_argv;")
734 v
.add_decl
("val *glob_sys;")
736 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
737 for tag
in count_type_test_tags
do
738 v
.add_decl
("long count_type_test_resolved_{tag};")
739 v
.add_decl
("long count_type_test_unresolved_{tag};")
740 v
.add_decl
("long count_type_test_skipped_{tag};")
741 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
742 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
743 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
747 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
748 v
.add_decl
("long count_invoke_by_tables;")
749 v
.add_decl
("long count_invoke_by_direct;")
750 v
.add_decl
("long count_invoke_by_inline;")
751 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
752 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
753 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
756 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
757 v
.add_decl
("long count_attr_reads = 0;")
758 v
.add_decl
("long count_isset_checks = 0;")
759 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
760 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
763 v
.add_decl
("static void show_backtrace(void) \{")
764 if ost
== "nitstack" or ost
== "libunwind" then
765 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
766 v
.add_decl
("unw_cursor_t cursor;")
767 v
.add_decl
("if(opt==NULL)\{")
768 v
.add_decl
("unw_context_t uc;")
769 v
.add_decl
("unw_word_t ip;")
770 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
771 v
.add_decl
("unw_getcontext(&uc);")
772 v
.add_decl
("unw_init_local(&cursor, &uc);")
773 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
774 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
775 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
776 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
777 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
778 if ost
== "nitstack" then
779 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
780 v
.add_decl
(" if (recv != NULL)\{")
781 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
782 v.add_decl(" \}else\{")
783 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
786 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
789 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
790 v.add_decl("free(procname);")
795 v.add_decl("void sig_handler(int signo)\{")
796 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
797 v.add_decl("show_backtrace();")
799 v.add_decl("signal(signo, SIG_DFL);")
800 v.add_decl("kill(getpid(), signo);")
803 v.add_decl("void fatal_exit(int status) \{")
804 v.add_decl("show_backtrace();")
805 v.add_decl("exit(status);")
809 v.add_decl("int nit_main(int argc, char** argv) \{")
811 v.add_decl("int main(int argc, char** argv) \{")
814 v.add("signal(SIGABRT, sig_handler);")
815 v.add("signal(SIGFPE, sig_handler);")
816 v.add("signal(SIGILL, sig_handler);")
817 v.add("signal(SIGINT, sig_handler);")
818 v.add("signal(SIGTERM, sig_handler);")
819 v.add("signal(SIGSEGV, sig_handler);")
820 v.add("signal(SIGPIPE, sig_handler);")
822 v.add("glob_argc = argc; glob_argv = argv;")
823 v.add("initialize_gc_option();")
825 v.add "initialize_nitni_global_refs();"
827 var main_type = mainmodule.sys_type
828 if main_type != null then
829 var mainmodule = v.compiler.mainmodule
830 var glob_sys = v.init_instance(main_type)
831 v.add("glob_sys = {glob_sys};")
832 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
833 if main_init != null then
834 v.send(main_init, [glob_sys])
836 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
837 mainmodule.try_get_primitive_method("main", main_type.mclass)
838 if main_method != null then
839 v.send(main_method, [glob_sys])
843 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
844 v.add_decl("long count_type_test_resolved_total = 0;")
845 v.add_decl("long count_type_test_unresolved_total = 0;")
846 v.add_decl("long count_type_test_skipped_total = 0;")
847 v.add_decl("long count_type_test_total_total = 0;")
848 for tag in count_type_test_tags do
849 v.add_decl("long count_type_test_total_{tag};")
850 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
851 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
852 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
853 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
854 v.add("count_type_test_total_total += count_type_test_total_{tag};")
856 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
857 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
858 var tags = count_type_test_tags.to_a
861 v.add("printf(\"{tag}\");")
862 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
863 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
864 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
865 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
869 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
870 v.add_decl("long count_invoke_total;")
871 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
872 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
873 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
874 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
875 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
878 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
879 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
880 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
886 for m in mainmodule.in_importation.greaters do
887 var f = "FILE_"+m.c_name
888 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
889 provide_declaration(f, "extern const char {f}[];")
893 # Copile all C functions related to the [incr|decr]_ref features of the FFI
894 fun compile_nitni_global_ref_functions
896 var v = self.new_visitor
898 struct nitni_global_ref_list_t *nitni_global_ref_list;
899 void initialize_nitni_global_refs() {
900 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
901 nitni_global_ref_list->head = NULL;
902 nitni_global_ref_list->tail = NULL;
905 void nitni_global_ref_add( struct nitni_ref *ref ) {
906 if ( nitni_global_ref_list->head == NULL ) {
907 nitni_global_ref_list->head = ref;
910 nitni_global_ref_list->tail->next = ref;
911 ref->prev = nitni_global_ref_list->tail;
913 nitni_global_ref_list->tail = ref;
918 void nitni_global_ref_remove( struct nitni_ref *ref ) {
919 if ( ref->prev == NULL ) {
920 nitni_global_ref_list->head = ref->next;
922 ref->prev->next = ref->next;
925 if ( ref->next == NULL ) {
926 nitni_global_ref_list->tail = ref->prev;
928 ref->next->prev = ref->prev;
932 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
933 if ( ref->count == 0 ) /* not registered */
936 nitni_global_ref_add( ref );
942 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
943 if ( ref->count == 1 ) /* was last reference */
945 /* remove from list */
946 nitni_global_ref_remove( ref );
954 # List of additional files required to compile (FFI)
955 var extern_bodies = new Array[ExternFile]
957 # List of source files to copy over to the compile dir
958 var files_to_copy = new Array[String]
960 # This is used to avoid adding an extern file more than once
961 private var seen_extern = new ArraySet[String]
963 # Generate code that initialize the attributes on a new instance
964 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
966 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
967 self.mainmodule.linearize_mclassdefs(cds)
969 for npropdef in modelbuilder.collect_attr_propdef(cd) do
970 npropdef.init_expr(v, recv)
975 # Generate code that check if an attribute is correctly initialized
976 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
978 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
979 self.mainmodule.linearize_mclassdefs(cds)
981 for npropdef in modelbuilder.collect_attr_propdef(cd) do
982 npropdef.check_expr(v, recv)
989 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
990 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
991 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
992 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
994 protected fun init_count_type_test_tags: HashMap[String, Int]
996 var res = new HashMap[String, Int]
997 for tag in count_type_test_tags do
1003 # Display stats about compilation process
1007 # * type tests against resolved types (`x
isa Collection[Animal]`)
1008 # * type tests against unresolved types (`x
isa Collection[E
]`)
1009 # * type tests skipped
1010 # * type tests total
1013 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1014 print "# static count_type_test"
1015 print "\tresolved:\tunresolved\tskipped\ttotal"
1016 var count_type_test_total = init_count_type_test_tags
1017 count_type_test_resolved["total"] = 0
1018 count_type_test_unresolved["total"] = 0
1019 count_type_test_skipped["total"] = 0
1020 count_type_test_total["total"] = 0
1021 for tag in count_type_test_tags do
1022 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1023 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1024 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1025 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1026 count_type_test_total["total"] += count_type_test_total[tag]
1028 var count_type_test = count_type_test_total["total"]
1029 var tags = count_type_test_tags.to_a
1033 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1034 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1035 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1036 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1042 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1045 # Avoid division by zero by returning the string "n/a"
1046 fun div(a,b:Int):String
1048 if b == 0 then return "n/a"
1049 return ((a*10000/b).to_f / 100.0).to_precision(2)
1053 # A file unit (may be more than one file if
1054 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1057 var writers = new Array[CodeWriter]
1058 var required_declarations = new HashSet[String]
1061 # Where to store generated lines
1064 var lines: List[String] = new List[String]
1065 var decl_lines: List[String] = new List[String]
1067 # Add a line in the main part of the generated C
1068 fun add(s: String) do self.lines.add(s)
1071 # (used for local or global declaration)
1072 fun add_decl(s: String) do self.decl_lines.add(s)
1076 file.writers.add(self)
1080 # A visitor on the AST of property definition that generate the C code.
1081 abstract class AbstractCompilerVisitor
1083 type COMPILER: AbstractCompiler
1085 # The associated compiler
1086 var compiler: COMPILER
1088 # The current visited AST node
1089 var current_node: nullable ANode = null is writable
1091 # The current `StaticFrame`
1092 var frame: nullable StaticFrame = null is writable
1094 # Alias for self.compiler.mainmodule.object_type
1095 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1097 # Alias for self.compiler.mainmodule.bool_type
1098 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1100 var writer: CodeWriter is noinit
1104 self.writer = new CodeWriter(compiler.files.last)
1107 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1108 fun get_property(name: String, recv: MType): MMethod
1110 assert recv isa MClassType
1111 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1114 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1116 var initializers = callsite.mpropdef.initializers
1117 if not initializers.is_empty then
1118 var recv = arguments.first
1121 for p in initializers do
1122 if p isa MMethod then
1124 for x in p.intro.msignature.mparameters do
1125 args.add arguments[i]
1129 else if p isa MAttribute then
1130 self.write_attribute(p, recv, arguments[i])
1134 assert i == arguments.length
1136 return self.send(callsite.mproperty, [recv])
1139 return self.send(callsite.mproperty, arguments)
1142 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1144 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1146 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1148 # Return an element of a native array.
1149 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1150 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1152 # Store an element in a native array.
1153 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1154 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1156 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1157 # This method is used to manage varargs in signatures and returns the real array
1158 # of runtime variables to use in the call.
1159 fun varargize(mpropdef: MMethodDef, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1161 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1162 var res = new Array[RuntimeVariable]
1165 if args.is_empty then return res
1167 var vararg_rank = msignature.vararg_rank
1168 var vararg_len = args.length - msignature.arity
1169 if vararg_len < 0 then vararg_len = 0
1171 for i in [0..msignature.arity[ do
1172 if i == vararg_rank then
1174 if ne isa AVarargExpr then
1175 var e = self.expr(ne.n_expr, null)
1179 var vararg = new Array[RuntimeVariable]
1180 for j in [vararg_rank..vararg_rank+vararg_len] do
1181 var e = self.expr(args[j], null)
1184 var elttype = msignature.mparameters[vararg_rank].mtype
1185 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1189 if i > vararg_rank then j += vararg_len
1190 var e = self.expr(args[j], null)
1199 # Anchor a type to the main module and the current receiver
1200 fun anchor(mtype: MType): MType
1202 if not mtype.need_anchor then return mtype
1203 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1206 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1208 if not mtype.need_anchor then return mtype
1209 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1212 # Unsafely cast a value to a new type
1213 # ie the result share the same C variable but my have a different mcasttype
1214 # NOTE: if the adaptation is useless then `value
` is returned as it.
1215 # ENSURE: `result
.name
== value
.name
`
1216 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1218 mtype = self.anchor(mtype)
1219 var valmtype = value.mcasttype
1220 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1224 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1225 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1228 var res = new RuntimeVariable(value.name, valmtype, mtype)
1233 # Generate a super call from a method definition
1234 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1236 # Adapt the arguments of a method according to targetted `MMethodDef`
1237 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1239 # Unbox all the arguments of a method when implemented `extern` or `intern`
1240 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1242 # Box or unbox a value to another type iff a C type conversion is needed
1243 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1244 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1246 # Box extern classes to be used in the generated code
1247 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1249 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1250 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1252 # Generate a polymorphic subtype test
1253 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1255 # Generate the code required to dynamically check if 2 objects share the same runtime type
1256 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1258 # Generate a Nit "is" for two runtime_variables
1259 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1263 # Generate a static call on a method definition
1264 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1266 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1267 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1269 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1270 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1272 assert t isa MClassType
1273 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1274 return self.call(propdef, t, args)
1277 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1278 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1280 assert t isa MClassType
1281 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1282 return self.call(m, t, args)
1285 # Attributes handling
1287 # Generate a polymorphic attribute is_set test
1288 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1290 # Generate a polymorphic attribute read
1291 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1293 # Generate a polymorphic attribute write
1294 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1298 # Add a check and an abort for a null receiver if needed
1299 fun check_recv_notnull(recv: RuntimeVariable)
1301 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1303 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1305 self.add("if (unlikely({recv} == NULL)) \{")
1306 self.add_abort("Receiver is null")
1313 private var names = new HashSet[String]
1314 private var last: Int = 0
1316 # Return a new name based on `s
` and unique in the visitor
1317 fun get_name(s: String): String
1319 if not self.names.has(s) then
1323 var i = self.last + 1
1326 if not self.names.has(s2) then
1335 # Return an unique and stable identifier associated with an escapemark
1336 fun escapemark_name(e: nullable EscapeMark): String
1339 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1341 if name == null then name = "label"
1342 name = get_name(name)
1343 frame.escapemark_names[e] = name
1347 # Insert a C label for associated with an escapemark
1348 fun add_escape_label(e: nullable EscapeMark)
1350 if e == null then return
1351 if e.escapes.is_empty then return
1352 add("BREAK_{escapemark_name(e)}: (void)0;")
1355 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1356 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1357 fun class_name_string(value: RuntimeVariable): String is abstract
1359 # Variables handling
1361 protected var variables = new HashMap[Variable, RuntimeVariable]
1363 # Return the local runtime_variable associated to a Nit local variable
1364 fun variable(variable: Variable): RuntimeVariable
1366 if self.variables.has_key(variable) then
1367 return self.variables[variable]
1369 var name = self.get_name("var_{variable.name}")
1370 var mtype = variable.declared_type.as(not null)
1371 mtype = self.anchor(mtype)
1372 var res = new RuntimeVariable(name, mtype, mtype)
1373 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1374 self.variables[variable] = res
1379 # Return a new uninitialized local runtime_variable
1380 fun new_var(mtype: MType): RuntimeVariable
1382 mtype = self.anchor(mtype)
1383 var name = self.get_name("var")
1384 var res = new RuntimeVariable(name, mtype, mtype)
1385 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1389 # The difference with `new_var
` is the C static type of the local variable
1390 fun new_var_extern(mtype: MType): RuntimeVariable
1392 mtype = self.anchor(mtype)
1393 var name = self.get_name("var")
1394 var res = new RuntimeVariable(name, mtype, mtype)
1395 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1399 # Return a new uninitialized named runtime_variable
1400 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1402 mtype = self.anchor(mtype)
1403 var res = new RuntimeVariable(name, mtype, mtype)
1404 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1408 # Correctly assign a left and a right value
1409 # Boxing and unboxing is performed if required
1410 fun assign(left, right: RuntimeVariable)
1412 right = self.autobox(right, left.mtype)
1413 self.add("{left} = {right};")
1416 # Generate instances
1418 # Generate a alloc-instance + init-attributes
1419 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1421 # Allocate and init attributes of an instance of a standard or extern class
1423 # Does not support universals and the pseudo-internal `NativeArray` class.
1424 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1427 var ctype = mtype.ctype
1428 assert mtype.mclass.name != "NativeArray"
1429 if not mtype.is_c_primitive then
1430 recv = init_instance(mtype)
1431 else if ctype == "char*" then
1432 recv = new_expr("NULL/*special!*/", mtype)
1434 recv = new_expr("({ctype})0/*special!*/", mtype)
1439 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1440 fun set_finalizer(recv: RuntimeVariable)
1442 var mtype = recv.mtype
1443 var finalizable_type = compiler.mainmodule.finalizable_type
1444 if finalizable_type != null and not mtype.need_anchor and
1445 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1446 add "gc_register_finalizer({recv});"
1450 # The currently processed module
1452 # alias for `compiler
.mainmodule
`
1453 fun mmodule: MModule do return compiler.mainmodule
1455 # Generate an integer value
1456 fun int_instance(value: Int): RuntimeVariable
1458 var t = mmodule.int_type
1459 var res = new RuntimeVariable("{value.to_s}l", t, t)
1463 # Generate a char value
1464 fun char_instance(value: Char): RuntimeVariable
1466 var t = mmodule.char_type
1467 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1471 # Generate a float value
1473 # FIXME pass a Float, not a string
1474 fun float_instance(value: String): RuntimeVariable
1476 var t = mmodule.float_type
1477 var res = new RuntimeVariable("{value}", t, t)
1481 # Generate an integer value
1482 fun bool_instance(value: Bool): RuntimeVariable
1484 var s = if value then "1" else "0"
1485 var res = new RuntimeVariable(s, bool_type, bool_type)
1489 # Generate the `null` value
1490 fun null_instance: RuntimeVariable
1492 var t = compiler.mainmodule.model.null_type
1493 var res = new RuntimeVariable("((val*)NULL)", t, t)
1497 # Generate a string value
1498 fun string_instance(string: String): RuntimeVariable
1500 var mtype = mmodule.string_type
1501 var name = self.get_name("varonce")
1502 self.add_decl("static {mtype.ctype} {name};")
1503 var res = self.new_var(mtype)
1504 self.add("if (likely({name}!=NULL)) \{")
1505 self.add("{res} = {name};")
1506 self.add("\} else \{")
1507 var native_mtype = mmodule.native_string_type
1508 var nat = self.new_var(native_mtype)
1509 self.add("{nat} = \"{string.escape_to_c}\";")
1510 var length = self.int_instance(string.length)
1511 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1512 self.add("{name} = {res};")
1517 fun value_instance(object: Object): RuntimeVariable
1519 if object isa Int then
1520 return int_instance(object)
1521 else if object isa Bool then
1522 return bool_instance(object)
1523 else if object isa String then
1524 return string_instance(object)
1530 # Generate an array value
1531 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1533 # Get an instance of a array for a vararg
1534 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1538 # Add a line in the main part of the generated C
1539 fun add(s: String) do self.writer.lines.add(s)
1542 # (used for local or global declaration)
1543 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1545 # Request the presence of a global declaration
1546 fun require_declaration(key: String)
1548 var reqs = self.writer.file.required_declarations
1549 if reqs.has(key) then return
1551 var node = current_node
1552 if node != null then compiler.requirers_of_declarations[key] = node
1555 # Add a declaration in the local-header
1556 # The declaration is ensured to be present once
1557 fun declare_once(s: String)
1559 self.compiler.provide_declaration(s, s)
1560 self.require_declaration(s)
1563 # Look for a needed .h and .c file for a given module
1564 # This is used for the legacy FFI
1565 fun add_extern(mmodule: MModule)
1567 var file = mmodule.location.file.filename
1568 file = file.strip_extension(".nit")
1569 var tryfile = file + ".nit.h"
1570 if tryfile.file_exists then
1571 self.declare_once("#include \"{tryfile.basename("")}\"")
1572 self.compiler.files_to_copy.add(tryfile)
1574 tryfile = file + "_nit.h"
1575 if tryfile.file_exists then
1576 self.declare_once("#include \"{tryfile.basename("")}\"")
1577 self.compiler.files_to_copy.add(tryfile)
1580 if self.compiler.seen_extern.has(file) then return
1581 self.compiler.seen_extern.add(file)
1582 tryfile = file + ".nit.c"
1583 if not tryfile.file_exists then
1584 tryfile = file + "_nit.c"
1585 if not tryfile.file_exists then return
1587 var f = new ExternCFile(tryfile.basename(""), "")
1588 self.compiler.extern_bodies.add(f)
1589 self.compiler.files_to_copy.add(tryfile)
1592 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1593 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1595 var res = new_var(mtype)
1596 self.add("{res} = {cexpr};")
1600 # Generate generic abort
1601 # used by aborts, asserts, casts, etc.
1602 fun add_abort(message: String)
1604 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1610 if self.current_node != null and self.current_node.location.file != null and
1611 self.current_node.location.file.mmodule != null then
1612 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1613 self.require_declaration(f)
1614 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1616 self.add("PRINT_ERROR(\"\\n\");")
1618 self.add("fatal_exit(1);")
1621 # Add a dynamic cast
1622 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1624 var res = self.type_test(value, mtype, tag)
1625 self.add("if (unlikely(!{res})) \{")
1626 var cn = self.class_name_string(value)
1627 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1632 # Generate a return with the value `s
`
1633 fun ret(s: RuntimeVariable)
1635 self.assign(self.frame.returnvar.as(not null), s)
1636 self.add("goto {self.frame.returnlabel.as(not null)};")
1639 # Compile a statement (if any)
1640 fun stmt(nexpr: nullable AExpr)
1642 if nexpr == null then return
1644 var narray = nexpr.comprehension
1645 if narray != null then
1646 var recv = frame.comprehension.as(not null)
1647 var val = expr(nexpr, narray.element_mtype)
1648 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1652 var old = self.current_node
1653 self.current_node = nexpr
1655 self.current_node = old
1658 # Compile an expression an return its result
1659 # `mtype
` is the expected return type, pass null if no specific type is expected.
1660 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1662 var old = self.current_node
1663 self.current_node = nexpr
1664 var res = nexpr.expr(self).as(not null)
1665 if mtype != null then
1666 mtype = self.anchor(mtype)
1667 res = self.autobox(res, mtype)
1669 res = autoadapt(res, nexpr.mtype.as(not null))
1670 var implicit_cast_to = nexpr.implicit_cast_to
1671 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1672 add_cast(res, implicit_cast_to, "auto")
1673 res = autoadapt(res, implicit_cast_to)
1675 self.current_node = old
1679 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1680 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1682 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1683 fun debug(message: String)
1685 var node = self.current_node
1686 if node == null then
1687 print "?: {message}"
1691 self.add("/* DEBUG: {message} */")
1695 # A C function associated to a Nit method
1696 # Because of customization, a given Nit method can be compiler more that once
1697 abstract class AbstractRuntimeFunction
1699 type COMPILER: AbstractCompiler
1700 type VISITOR: AbstractCompilerVisitor
1702 # The associated Nit method
1703 var mmethoddef: MMethodDef
1705 # The mangled c name of the runtime_function
1706 # Subclasses should redefine `build_c_name
` instead
1709 var res = self.c_name_cache
1710 if res != null then return res
1711 res = self.build_c_name
1712 self.c_name_cache = res
1716 # Non cached version of `c_name
`
1717 protected fun build_c_name: String is abstract
1719 protected var c_name_cache: nullable String = null is writable
1721 # Implements a call of the runtime_function
1722 # May inline the body or generate a C function call
1723 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1725 # Generate the code for the `AbstractRuntimeFunction`
1726 # Warning: compile more than once compilation makes CC unhappy
1727 fun compile_to_c(compiler: COMPILER) is abstract
1730 # A runtime variable hold a runtime value in C.
1731 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1733 # 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.
1734 class RuntimeVariable
1735 # The name of the variable in the C code
1738 # The static type of the variable (as declard in C)
1741 # The current casted type of the variable (as known in Nit)
1742 var mcasttype: MType is writable
1744 # If the variable exaclty a mcasttype?
1745 # false (usual value) means that the variable is a mcasttype or a subtype.
1746 var is_exact: Bool = false is writable
1750 assert not mtype.need_anchor
1751 assert not mcasttype.need_anchor
1754 redef fun to_s do return name
1759 if self.is_exact then
1760 exact_str = " exact"
1765 if self.mtype == self.mcasttype then
1766 type_str = "{mtype}{exact_str}"
1768 type_str = "{mtype}({mcasttype}{exact_str})"
1770 return "<{name}:{type_str}>"
1774 # The static context of a visited property in a `AbstractCompilerVisitor`
1777 type VISITOR: AbstractCompilerVisitor
1779 # The associated visitor
1780 var visitor: VISITOR
1782 # The executed property.
1783 # A Method in case of a call, an attribute in case of a default initialization.
1784 var mpropdef: MPropDef
1786 # The static type of the receiver
1787 var receiver: MClassType
1789 # Arguments of the method (the first is the receiver)
1790 var arguments: Array[RuntimeVariable]
1792 # The runtime_variable associated to the return (in a function)
1793 var returnvar: nullable RuntimeVariable = null is writable
1795 # The label at the end of the property
1796 var returnlabel: nullable String = null is writable
1798 # Labels associated to a each escapemarks.
1799 # Because of inlinings, escape-marks must be associated to their context (the frame)
1800 private var escapemark_names = new HashMap[EscapeMark, String]
1802 # The array comprehension currently filled, if any
1803 private var comprehension: nullable RuntimeVariable = null
1807 # Return the C type associated to a given Nit static type
1808 fun ctype: String do return "val*"
1810 # C type outside of the compiler code and in boxes
1811 fun ctype_extern: String do return "val*"
1813 # Short name of the `ctype
` to use in unions
1814 fun ctypename: String do return "val"
1816 # Is the associated C type a primitive one?
1818 # ENSURE `result
== (ctype
!= "val*")`
1819 fun is_c_primitive: Bool do return false
1822 redef class MClassType
1824 redef var ctype is lazy do
1825 if mclass.name == "Int" then
1827 else if mclass.name == "Bool" then
1829 else if mclass.name == "Char" then
1831 else if mclass.name == "Float" then
1833 else if mclass.name == "NativeString" then
1835 else if mclass.name == "NativeArray" then
1842 redef var is_c_primitive is lazy do return ctype != "val*"
1844 redef fun ctype_extern: String
1846 if mclass.kind == extern_kind then
1853 redef fun ctypename: String
1855 if mclass.name == "Int" then
1857 else if mclass.name == "Bool" then
1859 else if mclass.name == "Char" then
1861 else if mclass.name == "Float" then
1863 else if mclass.name == "NativeString" then
1865 else if mclass.name == "NativeArray" then
1866 #return "{self.arguments.first.ctype}*"
1874 redef class MPropDef
1875 type VISITOR: AbstractCompilerVisitor
1878 redef class MMethodDef
1879 # Can the body be inlined?
1880 fun can_inline(v: VISITOR): Bool
1882 if is_abstract then return true
1883 var modelbuilder = v.compiler.modelbuilder
1884 var node = modelbuilder.mpropdef2node(self)
1885 if node isa APropdef then
1886 return node.can_inline
1887 else if node isa AClassdef then
1888 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1895 # Inline the body in another visitor
1896 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1898 var modelbuilder = v.compiler.modelbuilder
1899 var val = constant_value
1900 var node = modelbuilder.mpropdef2node(self)
1903 var cn = v.class_name_string(arguments.first)
1904 v.current_node = node
1905 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1910 if node isa APropdef then
1911 var oldnode = v.current_node
1912 v.current_node = node
1913 self.compile_parameter_check(v, arguments)
1914 node.compile_to_c(v, self, arguments)
1915 v.current_node = oldnode
1916 else if node isa AClassdef then
1917 var oldnode = v.current_node
1918 v.current_node = node
1919 self.compile_parameter_check(v, arguments)
1920 node.compile_to_c(v, self, arguments)
1921 v.current_node = oldnode
1922 else if val != null then
1923 v.ret(v.value_instance(val))
1930 # Generate type checks in the C code to check covariant parameters
1931 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1933 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1935 for i in [0..msignature.arity[ do
1936 # skip test for vararg since the array is instantiated with the correct polymorphic type
1937 if msignature.vararg_rank == i then continue
1939 # skip if the cast is not required
1940 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1941 if not origmtype.need_anchor then continue
1943 # get the parameter type
1944 var mtype = self.msignature.mparameters[i].mtype
1947 # note that v decides if and how to implements the cast
1948 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1949 v.add_cast(arguments[i+1], mtype, "covariance")
1956 redef class APropdef
1957 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1959 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1960 debug("Not yet implemented")
1963 fun can_inline: Bool do return true
1966 redef class AMethPropdef
1967 redef fun compile_to_c(v, mpropdef, arguments)
1969 # Call the implicit super-init
1970 var auto_super_inits = self.auto_super_inits
1971 if auto_super_inits != null then
1972 var args = [arguments.first]
1973 for auto_super_init in auto_super_inits do
1974 assert auto_super_init.mproperty != mpropdef.mproperty
1976 for i in [0..auto_super_init.msignature.arity+1[ do
1977 args.add(arguments[i])
1979 assert auto_super_init.mproperty != mpropdef.mproperty
1980 v.compile_callsite(auto_super_init, args)
1983 if auto_super_call then
1984 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1987 # Try special compilation
1988 if mpropdef.is_intern then
1989 if compile_intern_to_c(v, mpropdef, arguments) then return
1990 else if mpropdef.is_extern then
1991 if mpropdef.mproperty.is_init then
1992 if compile_externinit_to_c(v, mpropdef, arguments) then return
1994 if compile_externmeth_to_c(v, mpropdef, arguments) then return
1998 # Compile block if any
1999 var n_block = n_block
2000 if n_block != null then
2001 for i in [0..mpropdef.msignature.arity[ do
2002 var variable = self.n_signature.n_params[i].variable.as(not null)
2003 v.assign(v.variable(variable), arguments[i+1])
2010 var cn = v.class_name_string(arguments.first)
2011 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2015 redef fun can_inline
2017 if self.auto_super_inits != null then return false
2018 var nblock = self.n_block
2019 if nblock == null then return true
2020 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2021 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2025 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2027 var pname = mpropdef.mproperty.name
2028 var cname = mpropdef.mclassdef.mclass.name
2029 var ret = mpropdef.msignature.return_mtype
2031 ret = v.resolve_for(ret, arguments.first)
2033 if pname != "==" and pname != "!=" then
2034 v.adapt_signature(mpropdef, arguments)
2035 v.unbox_signature_extern(mpropdef, arguments)
2037 if cname == "Int" then
2038 if pname == "output" then
2039 v.add("printf(\"%ld\\n\", {arguments.first});")
2041 else if pname == "object_id" then
2042 v.ret(arguments.first)
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 == "unary -" then
2051 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2053 else if pname == "*" then
2054 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2056 else if pname == "/" then
2057 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2059 else if pname == "%" then
2060 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2062 else if pname == "lshift" then
2063 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2065 else if pname == "rshift" then
2066 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2068 else if pname == "==" then
2069 v.ret(v.equal_test(arguments[0], arguments[1]))
2071 else if pname == "!=" then
2072 var res = v.equal_test(arguments[0], arguments[1])
2073 v.ret(v.new_expr("!{res}", ret.as(not null)))
2075 else if pname == "<" then
2076 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2078 else if pname == ">" then
2079 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2081 else if pname == "<=" then
2082 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2084 else if pname == ">=" then
2085 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2087 else if pname == "to_f" then
2088 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2090 else if pname == "ascii" then
2091 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2094 else if cname == "Char" then
2095 if pname == "output" then
2096 v.add("printf(\"%c\", {arguments.first});")
2098 else if pname == "object_id" then
2099 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2101 else if pname == "successor" then
2102 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2104 else if pname == "predecessor" then
2105 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2107 else if pname == "==" then
2108 v.ret(v.equal_test(arguments[0], arguments[1]))
2110 else if pname == "!=" then
2111 var res = v.equal_test(arguments[0], arguments[1])
2112 v.ret(v.new_expr("!{res}", ret.as(not null)))
2114 else if pname == "<" then
2115 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2117 else if pname == ">" then
2118 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2120 else if pname == "<=" then
2121 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2123 else if pname == ">=" then
2124 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2126 else if pname == "to_i" then
2127 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2129 else if pname == "ascii" then
2130 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2133 else if cname == "Bool" then
2134 if pname == "output" then
2135 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2137 else if pname == "object_id" then
2138 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2140 else if pname == "==" then
2141 v.ret(v.equal_test(arguments[0], arguments[1]))
2143 else if pname == "!=" then
2144 var res = v.equal_test(arguments[0], arguments[1])
2145 v.ret(v.new_expr("!{res}", ret.as(not null)))
2148 else if cname == "Float" then
2149 if pname == "output" then
2150 v.add("printf(\"%f\\n\", {arguments.first});")
2152 else if pname == "object_id" then
2153 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2155 else if pname == "+" then
2156 v.ret(v.new_expr("{arguments[0]} + {arguments[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 == "unary -" then
2162 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2164 else if pname == "succ" then
2165 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2167 else if pname == "prec" then
2168 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2170 else if pname == "*" then
2171 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2173 else if pname == "/" then
2174 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2176 else if pname == "==" then
2177 v.ret(v.equal_test(arguments[0], arguments[1]))
2179 else if pname == "!=" then
2180 var res = v.equal_test(arguments[0], arguments[1])
2181 v.ret(v.new_expr("!{res}", ret.as(not null)))
2183 else if pname == "<" then
2184 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2186 else if pname == ">" then
2187 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2189 else if pname == "<=" then
2190 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2192 else if pname == ">=" then
2193 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2195 else if pname == "to_i" then
2196 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2199 else if cname == "NativeString" then
2200 if pname == "[]" then
2201 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2203 else if pname == "[]=" then
2204 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2206 else if pname == "copy_to" then
2207 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2209 else if pname == "atoi" then
2210 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2212 else if pname == "new" then
2213 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2216 else if cname == "NativeArray" then
2217 v.native_array_def(pname, ret, arguments)
2220 if pname == "exit" then
2221 v.add("exit({arguments[1]});")
2223 else if pname == "sys" then
2224 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2226 else if pname == "calloc_string" then
2227 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2229 else if pname == "calloc_array" then
2230 v.calloc_array(ret.as(not null), arguments)
2232 else if pname == "object_id" then
2233 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2235 else if pname == "is_same_type" then
2236 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2238 else if pname == "is_same_instance" then
2239 v.ret(v.equal_test(arguments[0], arguments[1]))
2241 else if pname == "output_class_name" then
2242 var nat = v.class_name_string(arguments.first)
2243 v.add("printf(\"%s\\n\", {nat});")
2245 else if pname == "native_class_name" then
2246 var nat = v.class_name_string(arguments.first)
2247 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2249 else if pname == "force_garbage_collection" then
2250 v.add("nit_gcollect();")
2252 else if pname == "native_argc" then
2253 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2255 else if pname == "native_argv" then
2256 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2262 # Compile an extern method
2263 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2264 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2267 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2268 if at != null and at.n_args.length == 1 then
2269 externname = at.arg_as_string(v.compiler.modelbuilder)
2270 if externname == null then return false
2274 v.add_extern(mpropdef.mclassdef.mmodule)
2275 var res: nullable RuntimeVariable = null
2276 var ret = mpropdef.msignature.return_mtype
2278 ret = v.resolve_for(ret, arguments.first)
2279 res = v.new_var_extern(ret)
2281 v.adapt_signature(mpropdef, arguments)
2282 v.unbox_signature_extern(mpropdef, arguments)
2285 v.add("{externname}({arguments.join(", ")});")
2287 v.add("{res} = {externname}({arguments.join(", ")});")
2288 res = v.box_extern(res, ret.as(not null))
2294 # Compile an extern factory
2295 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2296 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2299 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2301 externname = at.arg_as_string(v.compiler.modelbuilder)
2302 if externname == null then return false
2306 v.add_extern(mpropdef.mclassdef.mmodule)
2307 v.adapt_signature(mpropdef, arguments)
2308 v.unbox_signature_extern(mpropdef, arguments)
2309 var ret = arguments.first.mtype
2310 var res = v.new_var_extern(ret)
2314 v.add("{res} = {externname}({arguments.join(", ")});")
2315 res = v.box_extern(res, ret)
2321 redef class AAttrPropdef
2322 redef fun can_inline: Bool do return not is_lazy
2324 redef fun compile_to_c(v, mpropdef, arguments)
2326 if mpropdef == mreadpropdef then
2327 assert arguments.length == 1
2328 var recv = arguments.first
2332 var ret = self.mpropdef.static_mtype
2333 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2334 var guard = self.mlazypropdef.mproperty
2336 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2338 set = v.read_attribute(guard, recv)
2340 v.add("if(likely({set})) \{")
2341 res = v.read_attribute(self.mpropdef.mproperty, recv)
2344 var value = evaluate_expr(v, recv)
2346 v.assign(res, value)
2348 var true_v = v.bool_instance(true)
2349 v.write_attribute(guard, arguments.first, true_v)
2353 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2355 v.assign(v.frame.returnvar.as(not null), res)
2356 else if mpropdef == mwritepropdef then
2357 assert arguments.length == 2
2358 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2360 var ret = self.mpropdef.static_mtype
2361 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2363 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2371 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2373 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2376 # Evaluate, store and return the default value of the attribute
2377 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2379 var oldnode = v.current_node
2380 v.current_node = self
2381 var old_frame = v.frame
2382 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.as_notnullable.as(MClassType), [recv])
2386 var mtype = self.mpropdef.static_mtype
2387 assert mtype != null
2389 var nexpr = self.n_expr
2390 var nblock = self.n_block
2391 if nexpr != null then
2392 value = v.expr(nexpr, mtype)
2393 else if nblock != null then
2394 value = v.new_var(mtype)
2395 frame.returnvar = value
2396 frame.returnlabel = v.get_name("RET_LABEL")
2399 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2405 v.write_attribute(self.mpropdef.mproperty, recv, value)
2408 v.current_node = oldnode
2413 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2415 var nexpr = self.n_expr
2416 if nexpr != null then return
2418 var oldnode = v.current_node
2419 v.current_node = self
2420 var old_frame = v.frame
2421 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2423 # Force read to check the initialization
2424 v.read_attribute(self.mpropdef.mproperty, recv)
2426 v.current_node = oldnode
2430 redef class AClassdef
2431 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2433 if mpropdef == self.mfree_init then
2434 assert mpropdef.mproperty.is_root_init
2435 assert arguments.length == 1
2436 if not mpropdef.is_intro then
2437 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2447 # Try to compile self as an expression
2448 # Do not call this method directly, use `v
.expr
` instead
2449 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2451 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2452 var mtype = self.mtype
2453 if mtype == null then
2456 var res = v.new_var(mtype)
2457 v.add("/* {res} = NOT YET {class_name} */")
2462 # Try to compile self as a statement
2463 # Do not call this method directly, use `v
.stmt
` instead
2464 private fun stmt(v: AbstractCompilerVisitor)
2470 redef class ABlockExpr
2473 for e in self.n_expr do v.stmt(e)
2477 var last = self.n_expr.last
2478 for e in self.n_expr do
2479 if e == last then break
2482 return v.expr(last, null)
2486 redef class AVardeclExpr
2489 var variable = self.variable.as(not null)
2490 var ne = self.n_expr
2492 var i = v.expr(ne, variable.declared_type)
2493 v.assign(v.variable(variable), i)
2498 redef class AVarExpr
2501 var res = v.variable(self.variable.as(not null))
2502 var mtype = self.mtype.as(not null)
2503 return v.autoadapt(res, mtype)
2507 redef class AVarAssignExpr
2510 var variable = self.variable.as(not null)
2511 var i = v.expr(self.n_value, variable.declared_type)
2512 v.assign(v.variable(variable), i)
2517 redef class AVarReassignExpr
2520 var variable = self.variable.as(not null)
2521 var vari = v.variable(variable)
2522 var value = v.expr(self.n_value, variable.declared_type)
2523 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2525 v.assign(v.variable(variable), res)
2529 redef class ASelfExpr
2530 redef fun expr(v) do return v.frame.arguments.first
2533 redef class AEscapeExpr
2534 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2537 redef class AReturnExpr
2540 var nexpr = self.n_expr
2541 if nexpr != null then
2542 var returnvar = v.frame.returnvar.as(not null)
2543 var i = v.expr(nexpr, returnvar.mtype)
2544 v.assign(returnvar, i)
2546 v.add("goto {v.frame.returnlabel.as(not null)};")
2550 redef class AAbortExpr
2551 redef fun stmt(v) do v.add_abort("Aborted")
2557 var cond = v.expr_bool(self.n_expr)
2558 v.add("if ({cond})\{")
2567 var res = v.new_var(self.mtype.as(not null))
2568 var cond = v.expr_bool(self.n_expr)
2569 v.add("if ({cond})\{")
2570 v.assign(res, v.expr(self.n_then.as(not null), null))
2572 v.assign(res, v.expr(self.n_else.as(not null), null))
2578 redef class AIfexprExpr
2581 var res = v.new_var(self.mtype.as(not null))
2582 var cond = v.expr_bool(self.n_expr)
2583 v.add("if ({cond})\{")
2584 v.assign(res, v.expr(self.n_then, null))
2586 v.assign(res, v.expr(self.n_else, null))
2595 v.stmt(self.n_block)
2596 v.add_escape_label(break_mark)
2600 redef class AWhileExpr
2604 var cond = v.expr_bool(self.n_expr)
2605 v.add("if (!{cond}) break;")
2606 v.stmt(self.n_block)
2607 v.add_escape_label(continue_mark)
2609 v.add_escape_label(break_mark)
2613 redef class ALoopExpr
2617 v.stmt(self.n_block)
2618 v.add_escape_label(continue_mark)
2620 v.add_escape_label(break_mark)
2624 redef class AForExpr
2627 var cl = v.expr(self.n_expr, null)
2628 var it_meth = self.method_iterator
2629 assert it_meth != null
2630 var it = v.compile_callsite(it_meth, [cl])
2633 var isok_meth = self.method_is_ok
2634 assert isok_meth != null
2635 var ok = v.compile_callsite(isok_meth, [it])
2637 v.add("if(!{ok}) break;")
2638 if self.variables.length == 1 then
2639 var item_meth = self.method_item
2640 assert item_meth != null
2641 var i = v.compile_callsite(item_meth, [it])
2643 v.assign(v.variable(variables.first), i)
2644 else if self.variables.length == 2 then
2645 var key_meth = self.method_key
2646 assert key_meth != null
2647 var i = v.compile_callsite(key_meth, [it])
2649 v.assign(v.variable(variables[0]), i)
2650 var item_meth = self.method_item
2651 assert item_meth != null
2652 i = v.compile_callsite(item_meth, [it])
2654 v.assign(v.variable(variables[1]), i)
2658 v.stmt(self.n_block)
2659 v.add_escape_label(continue_mark)
2660 var next_meth = self.method_next
2661 assert next_meth != null
2662 v.compile_callsite(next_meth, [it])
2664 v.add_escape_label(break_mark)
2666 var method_finish = self.method_finish
2667 if method_finish != null then
2668 # TODO: Find a way to call this also in long escape (e.g. return)
2669 v.compile_callsite(method_finish, [it])
2674 redef class AAssertExpr
2677 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2679 var cond = v.expr_bool(self.n_expr)
2680 v.add("if (unlikely(!{cond})) \{")
2684 v.add_abort("Assert '{nid.text}' failed")
2686 v.add_abort("Assert failed")
2695 var res = v.new_var(self.mtype.as(not null))
2696 var i1 = v.expr_bool(self.n_expr)
2697 v.add("if ({i1}) \{")
2700 var i2 = v.expr_bool(self.n_expr2)
2701 v.add("{res} = {i2};")
2707 redef class AImpliesExpr
2710 var res = v.new_var(self.mtype.as(not null))
2711 var i1 = v.expr_bool(self.n_expr)
2712 v.add("if (!{i1}) \{")
2715 var i2 = v.expr_bool(self.n_expr2)
2716 v.add("{res} = {i2};")
2722 redef class AAndExpr
2725 var res = v.new_var(self.mtype.as(not null))
2726 var i1 = v.expr_bool(self.n_expr)
2727 v.add("if (!{i1}) \{")
2730 var i2 = v.expr_bool(self.n_expr2)
2731 v.add("{res} = {i2};")
2737 redef class ANotExpr
2740 var cond = v.expr_bool(self.n_expr)
2741 return v.new_expr("!{cond}", self.mtype.as(not null))
2745 redef class AOrElseExpr
2748 var res = v.new_var(self.mtype.as(not null))
2749 var i1 = v.expr(self.n_expr, null)
2750 v.add("if ({i1}!=NULL) \{")
2753 var i2 = v.expr(self.n_expr2, null)
2760 redef class AIntExpr
2761 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2764 redef class AFloatExpr
2765 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2768 redef class ACharExpr
2769 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2772 redef class AArrayExpr
2775 var mtype = self.element_mtype.as(not null)
2776 var array = new Array[RuntimeVariable]
2777 var res = v.array_instance(array, mtype)
2779 var old_comprehension = v.frame.comprehension
2780 v.frame.comprehension = res
2781 for nexpr in self.n_exprs do
2784 v.frame.comprehension = old_comprehension
2790 redef class AStringFormExpr
2791 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2794 redef class ASuperstringExpr
2797 var type_string = mtype.as(not null)
2799 # Collect elements of the superstring
2800 var array = new Array[AExpr]
2801 for ne in self.n_exprs do
2802 # Drop literal empty string.
2803 # They appears in things like "{a}" that is ["", a, ""]
2804 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2808 # Store the allocated native array in a static variable
2810 var varonce = v.get_name("varonce")
2811 v.add("if (unlikely({varonce}==NULL)) \{")
2813 # The native array that will contains the elements to_s-ized.
2814 # For fast concatenation.
2815 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2817 v.add_decl("static {a.mtype.ctype} {varonce};")
2819 # Pre-fill the array with the literal string parts.
2820 # So they do not need to be filled again when reused
2821 for i in [0..array.length[ do
2823 if not ne isa AStringFormExpr then continue
2824 var e = v.expr(ne, null)
2825 v.native_array_set(a, i, e)
2829 # Take the native-array from the store.
2830 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2831 # WARNING: not thread safe! (FIXME?)
2832 v.add("{a} = {varonce};")
2833 v.add("{varonce} = NULL;")
2836 # Stringify the elements and put them in the native array
2837 var to_s_method = v.get_property("to_s", v.object_type)
2838 for i in [0..array.length[ do
2840 if ne isa AStringFormExpr then continue
2841 var e = v.expr(ne, null)
2842 # Skip the `to_s
` if the element is already a String
2843 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2844 e = v.send(to_s_method, [e]).as(not null)
2846 v.native_array_set(a, i, e)
2849 # Fast join the native string to get the result
2850 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2852 # We finish to work with the native array,
2853 # so store it so that it can be reused
2854 v.add("{varonce} = {a};")
2859 redef class ACrangeExpr
2862 var i1 = v.expr(self.n_expr, null)
2863 var i2 = v.expr(self.n_expr2, null)
2864 var mtype = self.mtype.as(MClassType)
2865 var res = v.init_instance(mtype)
2866 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2871 redef class AOrangeExpr
2874 var i1 = v.expr(self.n_expr, null)
2875 var i2 = v.expr(self.n_expr2, null)
2876 var mtype = self.mtype.as(MClassType)
2877 var res = v.init_instance(mtype)
2878 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2883 redef class ATrueExpr
2884 redef fun expr(v) do return v.bool_instance(true)
2887 redef class AFalseExpr
2888 redef fun expr(v) do return v.bool_instance(false)
2891 redef class ANullExpr
2892 redef fun expr(v) do return v.null_instance
2895 redef class AIsaExpr
2898 var i = v.expr(self.n_expr, null)
2899 return v.type_test(i, self.cast_type.as(not null), "isa")
2903 redef class AAsCastExpr
2906 var i = v.expr(self.n_expr, null)
2907 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2909 v.add_cast(i, self.mtype.as(not null), "as")
2914 redef class AAsNotnullExpr
2917 var i = v.expr(self.n_expr, null)
2918 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2920 if i.mtype.is_c_primitive then return i
2922 v.add("if (unlikely({i} == NULL)) \{")
2923 v.add_abort("Cast failed")
2929 redef class AParExpr
2930 redef fun expr(v) do return v.expr(self.n_expr, null)
2933 redef class AOnceExpr
2936 var mtype = self.mtype.as(not null)
2937 var name = v.get_name("varonce")
2938 var guard = v.get_name(name + "_guard")
2939 v.add_decl("static {mtype.ctype} {name};")
2940 v.add_decl("static int {guard};")
2941 var res = v.new_var(mtype)
2942 v.add("if (likely({guard})) \{")
2943 v.add("{res} = {name};")
2945 var i = v.expr(self.n_expr, mtype)
2946 v.add("{res} = {i};")
2947 v.add("{name} = {res};")
2948 v.add("{guard} = 1;")
2954 redef class ASendExpr
2957 var recv = v.expr(self.n_expr, null)
2958 var callsite = self.callsite.as(not null)
2959 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2960 return v.compile_callsite(callsite, args)
2964 redef class ASendReassignFormExpr
2967 var recv = v.expr(self.n_expr, null)
2968 var callsite = self.callsite.as(not null)
2969 var args = v.varargize(callsite.mpropdef, recv, self.raw_arguments)
2971 var value = v.expr(self.n_value, null)
2973 var left = v.compile_callsite(callsite, args)
2976 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2980 v.compile_callsite(self.write_callsite.as(not null), args)
2984 redef class ASuperExpr
2987 var recv = v.frame.arguments.first
2989 var callsite = self.callsite
2990 if callsite != null then
2991 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
2993 # Add additional arguments for the super init call
2994 if args.length == 1 then
2995 for i in [0..callsite.msignature.arity[ do
2996 args.add(v.frame.arguments[i+1])
3000 var res = v.compile_callsite(callsite, args)
3004 var mpropdef = self.mpropdef.as(not null)
3005 var args = v.varargize(mpropdef, recv, self.n_args.n_exprs)
3006 if args.length == 1 then
3007 args = v.frame.arguments
3010 # stantard call-next-method
3011 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3015 redef class ANewExpr
3018 var mtype = self.recvtype
3019 assert mtype != null
3021 if mtype.mclass.name == "NativeArray" then
3022 assert self.n_args.n_exprs.length == 1
3023 var l = v.expr(self.n_args.n_exprs.first, null)
3024 assert mtype isa MGenericType
3025 var elttype = mtype.arguments.first
3026 return v.native_array_instance(elttype, l)
3029 var recv = v.init_instance_or_extern(mtype)
3031 var callsite = self.callsite.as(not null)
3032 var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
3033 var res2 = v.compile_callsite(callsite, args)
3034 if res2 != null then
3035 #self.debug("got {res2} from {mproperty}. drop {recv}")
3042 redef class AAttrExpr
3045 var recv = v.expr(self.n_expr, null)
3046 var mproperty = self.mproperty.as(not null)
3047 return v.read_attribute(mproperty, recv)
3051 redef class AAttrAssignExpr
3054 var recv = v.expr(self.n_expr, null)
3055 var i = v.expr(self.n_value, null)
3056 var mproperty = self.mproperty.as(not null)
3057 v.write_attribute(mproperty, recv, i)
3062 redef class AAttrReassignExpr
3065 var recv = v.expr(self.n_expr, null)
3066 var value = v.expr(self.n_value, null)
3067 var mproperty = self.mproperty.as(not null)
3068 var attr = v.read_attribute(mproperty, recv)
3069 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3071 v.write_attribute(mproperty, recv, res)
3075 redef class AIssetAttrExpr
3078 var recv = v.expr(self.n_expr, null)
3079 var mproperty = self.mproperty.as(not null)
3080 return v.isset_attribute(mproperty, recv)
3084 redef class ADebugTypeExpr
3093 redef class Array[E]
3094 # Return a new `Array` with the elements only contened in self and not in `o
`
3095 fun -(o: Array[E]): Array[E] do
3096 var res = new Array[E]
3097 for e in self do if not o.has(e) then res.add(e)
3103 # All `MProperty` associated to all `MClassDef` of `mclass
`
3104 fun properties(mclass: MClass): Set[MProperty] do
3105 if not self.properties_cache.has_key(mclass) then
3106 var properties = new HashSet[MProperty]
3107 var parents = new Array[MClass]
3108 if self.flatten_mclass_hierarchy.has(mclass) then
3109 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3111 for parent in parents do
3112 properties.add_all(self.properties(parent))
3114 for mclassdef in mclass.mclassdefs do
3115 if not self.in_importation <= mclassdef.mmodule then continue
3116 for mprop in mclassdef.intro_mproperties do
3117 properties.add(mprop)
3120 self.properties_cache[mclass] = properties
3122 return properties_cache[mclass]
3124 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3126 # Write FFI and nitni results to file
3127 fun finalize_ffi(c: AbstractCompiler) do end
3129 # Give requided addinional system libraries (as given to LD_LIBS)
3130 # Note: can return null instead of an empty set
3131 fun collect_linker_libs: nullable Array[String] do return null
3134 # Create a tool context to handle options and paths
3135 var toolcontext = new ToolContext
3137 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3139 # We do not add other options, so process them now!
3140 toolcontext.process_options(args)
3142 # We need a model to collect stufs
3143 var model = new Model
3144 # An a model builder to parse files
3145 var modelbuilder = new ModelBuilder(model, toolcontext)
3147 var arguments = toolcontext.option_context.rest
3148 if arguments.length > 1 and toolcontext.opt_output.value != null then
3149 print "Error: --output needs a single source file. Do you prefer --dir?"
3153 # Here we load an process all modules passed on the command line
3154 var mmodules = modelbuilder.parse(arguments)
3156 if mmodules.is_empty then return
3157 modelbuilder.run_phases
3159 for mmodule in mmodules do
3160 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3162 toolcontext.run_global_phases(ms)