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
"Option 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
"Option 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
= ""
467 var command
= "make -B -C {compile_dir} -f {makename} -j 4 {makeflags}"
468 self.toolcontext
.info
(command
, 2)
471 if self.toolcontext
.verbose_level
>= 3 then
472 res
= sys
.system
("{command} 2>&1")
474 res
= sys
.system
("{command} 2>&1 >/dev/null")
477 toolcontext
.error
(null, "Compilation Error: `make` failed with error code: {res}. The command was `{command}`.")
482 # Singleton that store the knowledge about the compilation process
483 abstract class AbstractCompiler
484 type VISITOR: AbstractCompilerVisitor
486 # Table corresponding c_names to nit names (methods)
487 var names
= new HashMap[String, String]
489 # The main module of the program currently compiled
490 # Is assigned during the separate compilation
491 var mainmodule
: MModule is writable
493 # The real main module of the program
494 var realmainmodule
: MModule is noinit
496 # The modelbuilder used to know the model and the AST
497 var modelbuilder
: ModelBuilder is protected writable
499 # Is hardening asked? (see --hardening)
500 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
502 # The targeted specific platform
503 var target_platform
: Platform is noinit
507 self.realmainmodule
= mainmodule
508 target_platform
= mainmodule
.target_platform
or else new Platform
511 # Do the full code generation of the program `mainmodule`
512 # It is the main method usually called after the instantiation
513 fun do_compilation
is abstract
515 # Force the creation of a new file
516 # The point is to avoid contamination between must-be-compiled-separately files
517 fun new_file
(name
: String): CodeFile
519 if modelbuilder
.toolcontext
.opt_group_c_files
.value
then
520 if self.files
.is_empty
then
521 var f
= new CodeFile(mainmodule
.c_name
)
524 return self.files
.first
526 var f
= new CodeFile(name
)
531 # The list of all associated files
532 # Used to generate .c files
533 var files
= new List[CodeFile]
535 # Initialize a visitor specific for a compiler engine
536 fun new_visitor
: VISITOR is abstract
538 # Where global declaration are stored (the main .h)
539 var header
: CodeWriter is writable, noinit
541 # Additionnal linker script for `ld`.
542 # Mainly used to do specific link-time symbol resolution
543 var linker_script
= new Array[String]
545 # Provide a declaration that can be requested (before or latter) by a visitor
546 fun provide_declaration
(key
: String, s
: String)
548 if self.provided_declarations
.has_key
(key
) then
549 assert self.provided_declarations
[key
] == s
551 self.provided_declarations
[key
] = s
554 private var provided_declarations
= new HashMap[String, String]
556 private var requirers_of_declarations
= new HashMap[String, ANode]
558 # Builds the .c and .h files to be used when generating a Stack Trace
559 # Binds the generated C function names to Nit function names
560 fun build_c_to_nit_bindings
562 var compile_dir
= modelbuilder
.compile_dir
564 var stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.c")
565 stream
.write
("#include <string.h>\n")
566 stream
.write
("#include <stdlib.h>\n")
567 stream
.write
("#include \"c_functions_hash
.h\
"\n")
568 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
569 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
570 stream
.write
("char* procname = malloc(len+1);")
571 stream
.write
("memcpy(procname, procproc, len);")
572 stream
.write
("procname[len] = '\\0';")
573 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
574 for i
in names
.keys
do
576 stream.write(i.escape_to_c)
577 stream.write("\
",\"")
578 stream.write(names[i].escape_to_c)
579 stream.write("\
"\},\n")
581 stream
.write
("\};\n")
582 stream
.write
("int i;")
583 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
584 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
585 stream
.write
("free(procname);")
586 stream
.write
("return map[i].nit_name;")
589 stream
.write
("free(procname);")
590 stream
.write
("return NULL;")
594 stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.h")
595 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
598 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
602 # This method call compile_header_strucs method that has to be refined
603 fun compile_header
do
604 self.header
.add_decl
("#include <stdlib.h>")
605 self.header
.add_decl
("#include <stdio.h>")
606 self.header
.add_decl
("#include <string.h>")
607 self.header
.add_decl
("#include <sys/types.h>\n")
608 self.header
.add_decl
("#include <unistd.h>\n")
609 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
610 self.header
.add_decl
("#ifdef ANDROID")
611 self.header
.add_decl
(" #include <android/log.h>")
612 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
613 self.header
.add_decl
("#else")
614 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
615 self.header
.add_decl
("#endif")
617 compile_header_structs
618 compile_nitni_structs
620 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
621 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
622 # Signal handler function prototype
623 self.header
.add_decl
("void fatal_exit(int);")
625 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
628 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
629 self.header
.add_decl
("#define likely(x) (x)")
630 self.header
.add_decl
("#define unlikely(x) (x)")
631 else if gccd_disable
.has
("correct-likely") then
632 # invert the `likely` definition
633 # Used by masochists to bench the worst case
634 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
635 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
637 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
638 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
641 # Global variable used by intern methods
642 self.header
.add_decl
("extern int glob_argc;")
643 self.header
.add_decl
("extern char **glob_argv;")
644 self.header
.add_decl
("extern val *glob_sys;")
647 # Declaration of structures for live Nit types
648 protected fun compile_header_structs
is abstract
650 # Declaration of structures for nitni undelying the FFI
651 protected fun compile_nitni_structs
653 self.header
.add_decl
"""
654 /* Native reference to Nit objects */
655 /* This structure is used to represent every Nit type in extern methods and custom C code. */
657 struct nitni_ref *next,
658 *prev; /* adjacent global references in global list */
659 int count; /* number of time this global reference has been marked */
662 /* List of global references from C code to Nit objects */
663 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
664 struct nitni_global_ref_list_t {
665 struct nitni_ref *head, *tail;
667 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
669 /* Initializer of global reference list */
670 extern void nitni_global_ref_list_init();
672 /* Intern function to add a global reference to the list */
673 extern void nitni_global_ref_add( struct nitni_ref *ref );
675 /* Intern function to remove a global reference from the list */
676 extern void nitni_global_ref_remove( struct nitni_ref *ref );
678 /* Increase count on an existing global reference */
679 extern void nitni_global_ref_incr( struct nitni_ref *ref );
681 /* Decrease count on an existing global reference */
682 extern void nitni_global_ref_decr( struct nitni_ref *ref );
686 fun compile_finalizer_function
688 var finalizable_type
= mainmodule
.finalizable_type
689 if finalizable_type
== null then return
691 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
693 if finalize_meth
== null then
694 modelbuilder
.toolcontext
.error
(null, "Error: the `Finalizable` class does not declare the `finalize` method.")
698 var v
= self.new_visitor
699 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
700 var recv
= v
.new_expr
("obj", finalizable_type
)
701 v
.send
(finalize_meth
, [recv
])
705 # Generate the main C function.
709 # * allocate the Sys object if it exists
710 # * call init if is exists
711 # * call main if it exists
712 fun compile_main_function
714 var v
= self.new_visitor
715 v
.add_decl
("#include <signal.h>")
716 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
717 var platform
= target_platform
719 if not platform
.supports_libunwind
then ost
= "none"
721 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
723 if ost
== "nitstack" or ost
== "libunwind" then
724 v
.add_decl
("#define UNW_LOCAL_ONLY")
725 v
.add_decl
("#include <libunwind.h>")
726 if ost
== "nitstack" then
727 v
.add_decl
("#include \"c_functions_hash
.h\
"")
730 v
.add_decl
("int glob_argc;")
731 v
.add_decl
("char **glob_argv;")
732 v
.add_decl
("val *glob_sys;")
734 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
735 for tag
in count_type_test_tags
do
736 v
.add_decl
("long count_type_test_resolved_{tag};")
737 v
.add_decl
("long count_type_test_unresolved_{tag};")
738 v
.add_decl
("long count_type_test_skipped_{tag};")
739 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
740 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
741 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
745 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
746 v
.add_decl
("long count_invoke_by_tables;")
747 v
.add_decl
("long count_invoke_by_direct;")
748 v
.add_decl
("long count_invoke_by_inline;")
749 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
750 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
751 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
754 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
755 v
.add_decl
("long count_attr_reads = 0;")
756 v
.add_decl
("long count_isset_checks = 0;")
757 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
758 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
761 v
.add_decl
("static void show_backtrace(void) \{")
762 if ost
== "nitstack" or ost
== "libunwind" then
763 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
764 v
.add_decl
("unw_cursor_t cursor;")
765 v
.add_decl
("if(opt==NULL)\{")
766 v
.add_decl
("unw_context_t uc;")
767 v
.add_decl
("unw_word_t ip;")
768 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
769 v
.add_decl
("unw_getcontext(&uc);")
770 v
.add_decl
("unw_init_local(&cursor, &uc);")
771 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
772 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
773 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
774 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
775 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
776 if ost
== "nitstack" then
777 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
778 v
.add_decl
(" if (recv != NULL)\{")
779 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
780 v.add_decl(" \}else\{")
781 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
784 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
787 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
788 v.add_decl("free(procname);")
793 v.add_decl("void sig_handler(int signo)\{")
794 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
795 v.add_decl("show_backtrace();")
797 v.add_decl("signal(signo, SIG_DFL);")
798 v.add_decl("kill(getpid(), signo);")
801 v.add_decl("void fatal_exit(int status) \{")
802 v.add_decl("show_backtrace();")
803 v.add_decl("exit(status);")
807 v.add_decl("int nit_main(int argc, char** argv) \{")
809 v.add_decl("int main(int argc, char** argv) \{")
812 v.add("signal(SIGABRT, sig_handler);")
813 v.add("signal(SIGFPE, sig_handler);")
814 v.add("signal(SIGILL, sig_handler);")
815 v.add("signal(SIGINT, sig_handler);")
816 v.add("signal(SIGTERM, sig_handler);")
817 v.add("signal(SIGSEGV, sig_handler);")
818 v.add("signal(SIGPIPE, sig_handler);")
820 v.add("glob_argc = argc; glob_argv = argv;")
821 v.add("initialize_gc_option();")
823 v.add "initialize_nitni_global_refs();"
825 var main_type = mainmodule.sys_type
826 if main_type != null then
827 var mainmodule = v.compiler.mainmodule
828 var glob_sys = v.init_instance(main_type)
829 v.add("glob_sys = {glob_sys};")
830 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
831 if main_init != null then
832 v.send(main_init, [glob_sys])
834 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
835 mainmodule.try_get_primitive_method("main", main_type.mclass)
836 if main_method != null then
837 v.send(main_method, [glob_sys])
841 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
842 v.add_decl("long count_type_test_resolved_total = 0;")
843 v.add_decl("long count_type_test_unresolved_total = 0;")
844 v.add_decl("long count_type_test_skipped_total = 0;")
845 v.add_decl("long count_type_test_total_total = 0;")
846 for tag in count_type_test_tags do
847 v.add_decl("long count_type_test_total_{tag};")
848 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
849 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
850 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
851 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
852 v.add("count_type_test_total_total += count_type_test_total_{tag};")
854 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
855 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
856 var tags = count_type_test_tags.to_a
859 v.add("printf(\"{tag}\");")
860 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
861 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
862 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
863 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
867 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
868 v.add_decl("long count_invoke_total;")
869 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
870 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
871 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
872 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
873 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
876 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
877 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
878 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
884 for m in mainmodule.in_importation.greaters do
885 var f = "FILE_"+m.c_name
886 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
887 provide_declaration(f, "extern const char {f}[];")
891 # Copile all C functions related to the [incr|decr]_ref features of the FFI
892 fun compile_nitni_global_ref_functions
894 var v = self.new_visitor
896 struct nitni_global_ref_list_t *nitni_global_ref_list;
897 void initialize_nitni_global_refs() {
898 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
899 nitni_global_ref_list->head = NULL;
900 nitni_global_ref_list->tail = NULL;
903 void nitni_global_ref_add( struct nitni_ref *ref ) {
904 if ( nitni_global_ref_list->head == NULL ) {
905 nitni_global_ref_list->head = ref;
908 nitni_global_ref_list->tail->next = ref;
909 ref->prev = nitni_global_ref_list->tail;
911 nitni_global_ref_list->tail = ref;
916 void nitni_global_ref_remove( struct nitni_ref *ref ) {
917 if ( ref->prev == NULL ) {
918 nitni_global_ref_list->head = ref->next;
920 ref->prev->next = ref->next;
923 if ( ref->next == NULL ) {
924 nitni_global_ref_list->tail = ref->prev;
926 ref->next->prev = ref->prev;
930 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
931 if ( ref->count == 0 ) /* not registered */
934 nitni_global_ref_add( ref );
940 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
941 if ( ref->count == 1 ) /* was last reference */
943 /* remove from list */
944 nitni_global_ref_remove( ref );
952 # List of additional files required to compile (FFI)
953 var extern_bodies = new Array[ExternFile]
955 # List of source files to copy over to the compile dir
956 var files_to_copy = new Array[String]
958 # This is used to avoid adding an extern file more than once
959 private var seen_extern = new ArraySet[String]
961 # Generate code that initialize the attributes on a new instance
962 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
964 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
965 self.mainmodule.linearize_mclassdefs(cds)
967 for npropdef in modelbuilder.collect_attr_propdef(cd) do
968 npropdef.init_expr(v, recv)
973 # Generate code that check if an attribute is correctly initialized
974 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
976 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
977 self.mainmodule.linearize_mclassdefs(cds)
979 for npropdef in modelbuilder.collect_attr_propdef(cd) do
980 npropdef.check_expr(v, recv)
987 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
988 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
989 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
990 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
992 protected fun init_count_type_test_tags: HashMap[String, Int]
994 var res = new HashMap[String, Int]
995 for tag in count_type_test_tags do
1001 # Display stats about compilation process
1005 # * type tests against resolved types (`x
isa Collection[Animal]`)
1006 # * type tests against unresolved types (`x
isa Collection[E
]`)
1007 # * type tests skipped
1008 # * type tests total
1011 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1012 print "# static count_type_test"
1013 print "\tresolved:\tunresolved\tskipped\ttotal"
1014 var count_type_test_total = init_count_type_test_tags
1015 count_type_test_resolved["total"] = 0
1016 count_type_test_unresolved["total"] = 0
1017 count_type_test_skipped["total"] = 0
1018 count_type_test_total["total"] = 0
1019 for tag in count_type_test_tags do
1020 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1021 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1022 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1023 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1024 count_type_test_total["total"] += count_type_test_total[tag]
1026 var count_type_test = count_type_test_total["total"]
1027 var tags = count_type_test_tags.to_a
1031 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1032 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1033 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1034 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1040 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1043 # A file unit (may be more than one file if
1044 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1047 var writers = new Array[CodeWriter]
1048 var required_declarations = new HashSet[String]
1051 # Where to store generated lines
1054 var lines: List[String] = new List[String]
1055 var decl_lines: List[String] = new List[String]
1057 # Add a line in the main part of the generated C
1058 fun add(s: String) do self.lines.add(s)
1061 # (used for local or global declaration)
1062 fun add_decl(s: String) do self.decl_lines.add(s)
1066 file.writers.add(self)
1070 # A visitor on the AST of property definition that generate the C code.
1071 abstract class AbstractCompilerVisitor
1073 type COMPILER: AbstractCompiler
1075 # The associated compiler
1076 var compiler: COMPILER
1078 # The current visited AST node
1079 var current_node: nullable ANode = null is writable
1081 # The current `StaticFrame`
1082 var frame: nullable StaticFrame = null is writable
1084 # Alias for self.compiler.mainmodule.object_type
1085 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1087 # Alias for self.compiler.mainmodule.bool_type
1088 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1090 var writer: CodeWriter is noinit
1094 self.writer = new CodeWriter(compiler.files.last)
1097 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1098 fun get_property(name: String, recv: MType): MMethod
1100 assert recv isa MClassType
1101 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1104 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1106 var initializers = callsite.mpropdef.initializers
1107 if not initializers.is_empty then
1108 var recv = arguments.first
1111 for p in initializers do
1112 if p isa MMethod then
1114 for x in p.intro.msignature.mparameters do
1115 args.add arguments[i]
1119 else if p isa MAttribute then
1120 self.write_attribute(p, recv, arguments[i])
1124 assert i == arguments.length
1126 return self.send(callsite.mproperty, [recv])
1129 return self.send(callsite.mproperty, arguments)
1132 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1134 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1136 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1138 # Return an element of a native array.
1139 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1140 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1142 # Store an element in a native array.
1143 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1144 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1146 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1147 # This method is used to manage varargs in signatures and returns the real array
1148 # of runtime variables to use in the call.
1149 fun varargize(mpropdef: MMethodDef, map: nullable SignatureMap, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1151 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1152 var res = new Array[RuntimeVariable]
1155 if msignature.arity == 0 then return res
1158 assert args.length == msignature.arity
1160 res.add self.expr(ne, null)
1165 # Eval in order of arguments, not parameters
1166 var exprs = new Array[RuntimeVariable].with_capacity(args.length)
1168 exprs.add self.expr(ne, null)
1171 # Fill `res
` with the result of the evaluation according to the mapping
1172 for i in [0..msignature.arity[ do
1173 var param = msignature.mparameters[i]
1174 var j = map.map.get_or_null(i)
1178 if param.is_vararg and map.vararg_decl > 0 then
1179 var vararg = exprs.sub(j, map.vararg_decl)
1180 var elttype = param.mtype
1181 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1192 # Anchor a type to the main module and the current receiver
1193 fun anchor(mtype: MType): MType
1195 if not mtype.need_anchor then return mtype
1196 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1199 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1201 if not mtype.need_anchor then return mtype
1202 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1205 # Unsafely cast a value to a new type
1206 # ie the result share the same C variable but my have a different mcasttype
1207 # NOTE: if the adaptation is useless then `value
` is returned as it.
1208 # ENSURE: `result
.name
== value
.name
`
1209 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1211 mtype = self.anchor(mtype)
1212 var valmtype = value.mcasttype
1213 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1217 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1218 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1221 var res = new RuntimeVariable(value.name, valmtype, mtype)
1226 # Generate a super call from a method definition
1227 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1229 # Adapt the arguments of a method according to targetted `MMethodDef`
1230 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1232 # Unbox all the arguments of a method when implemented `extern` or `intern`
1233 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1235 # Box or unbox a value to another type iff a C type conversion is needed
1236 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1237 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1239 # Box extern classes to be used in the generated code
1240 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1242 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1243 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1245 # Generate a polymorphic subtype test
1246 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1248 # Generate the code required to dynamically check if 2 objects share the same runtime type
1249 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1251 # Generate a Nit "is" for two runtime_variables
1252 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1256 # Generate a static call on a method definition
1257 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1259 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1260 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1262 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1263 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1265 assert t isa MClassType
1266 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1267 return self.call(propdef, t, args)
1270 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1271 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1273 assert t isa MClassType
1274 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1275 return self.call(m, t, args)
1278 # Attributes handling
1280 # Generate a polymorphic attribute is_set test
1281 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1283 # Generate a polymorphic attribute read
1284 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1286 # Generate a polymorphic attribute write
1287 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1291 # Add a check and an abort for a null receiver if needed
1292 fun check_recv_notnull(recv: RuntimeVariable)
1294 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1296 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1298 self.add("if (unlikely({recv} == NULL)) \{")
1299 self.add_abort("Receiver is null")
1306 private var names = new HashSet[String]
1307 private var last: Int = 0
1309 # Return a new name based on `s
` and unique in the visitor
1310 fun get_name(s: String): String
1312 if not self.names.has(s) then
1316 var i = self.last + 1
1319 if not self.names.has(s2) then
1328 # Return an unique and stable identifier associated with an escapemark
1329 fun escapemark_name(e: nullable EscapeMark): String
1332 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1334 if name == null then name = "label"
1335 name = get_name(name)
1336 frame.escapemark_names[e] = name
1340 # Insert a C label for associated with an escapemark
1341 fun add_escape_label(e: nullable EscapeMark)
1343 if e == null then return
1344 if e.escapes.is_empty then return
1345 add("BREAK_{escapemark_name(e)}: (void)0;")
1348 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1349 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1350 fun class_name_string(value: RuntimeVariable): String is abstract
1352 # Variables handling
1354 protected var variables = new HashMap[Variable, RuntimeVariable]
1356 # Return the local runtime_variable associated to a Nit local variable
1357 fun variable(variable: Variable): RuntimeVariable
1359 if self.variables.has_key(variable) then
1360 return self.variables[variable]
1362 var name = self.get_name("var_{variable.name}")
1363 var mtype = variable.declared_type.as(not null)
1364 mtype = self.anchor(mtype)
1365 var res = new RuntimeVariable(name, mtype, mtype)
1366 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1367 self.variables[variable] = res
1372 # Return a new uninitialized local runtime_variable
1373 fun new_var(mtype: MType): RuntimeVariable
1375 mtype = self.anchor(mtype)
1376 var name = self.get_name("var")
1377 var res = new RuntimeVariable(name, mtype, mtype)
1378 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1382 # The difference with `new_var
` is the C static type of the local variable
1383 fun new_var_extern(mtype: MType): RuntimeVariable
1385 mtype = self.anchor(mtype)
1386 var name = self.get_name("var")
1387 var res = new RuntimeVariable(name, mtype, mtype)
1388 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1392 # Return a new uninitialized named runtime_variable
1393 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1395 mtype = self.anchor(mtype)
1396 var res = new RuntimeVariable(name, mtype, mtype)
1397 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1401 # Correctly assign a left and a right value
1402 # Boxing and unboxing is performed if required
1403 fun assign(left, right: RuntimeVariable)
1405 right = self.autobox(right, left.mtype)
1406 self.add("{left} = {right};")
1409 # Generate instances
1411 # Generate a alloc-instance + init-attributes
1412 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1414 # Allocate and init attributes of an instance of a standard or extern class
1416 # Does not support universals and the pseudo-internal `NativeArray` class.
1417 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1420 var ctype = mtype.ctype
1421 assert mtype.mclass.name != "NativeArray"
1422 if not mtype.is_c_primitive then
1423 recv = init_instance(mtype)
1424 else if ctype == "char*" then
1425 recv = new_expr("NULL/*special!*/", mtype)
1427 recv = new_expr("({ctype})0/*special!*/", mtype)
1432 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1433 fun set_finalizer(recv: RuntimeVariable)
1435 var mtype = recv.mtype
1436 var finalizable_type = compiler.mainmodule.finalizable_type
1437 if finalizable_type != null and not mtype.need_anchor and
1438 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1439 add "gc_register_finalizer({recv});"
1443 # The currently processed module
1445 # alias for `compiler
.mainmodule
`
1446 fun mmodule: MModule do return compiler.mainmodule
1448 # Generate an integer value
1449 fun int_instance(value: Int): RuntimeVariable
1451 var t = mmodule.int_type
1452 var res = new RuntimeVariable("{value.to_s}l", t, t)
1456 # Generate a char value
1457 fun char_instance(value: Char): RuntimeVariable
1459 var t = mmodule.char_type
1460 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1464 # Generate a float value
1466 # FIXME pass a Float, not a string
1467 fun float_instance(value: String): RuntimeVariable
1469 var t = mmodule.float_type
1470 var res = new RuntimeVariable("{value}", t, t)
1474 # Generate an integer value
1475 fun bool_instance(value: Bool): RuntimeVariable
1477 var s = if value then "1" else "0"
1478 var res = new RuntimeVariable(s, bool_type, bool_type)
1482 # Generate the `null` value
1483 fun null_instance: RuntimeVariable
1485 var t = compiler.mainmodule.model.null_type
1486 var res = new RuntimeVariable("((val*)NULL)", t, t)
1490 # Generate a string value
1491 fun string_instance(string: String): RuntimeVariable
1493 var mtype = mmodule.string_type
1494 var name = self.get_name("varonce")
1495 self.add_decl("static {mtype.ctype} {name};")
1496 var res = self.new_var(mtype)
1497 self.add("if (likely({name}!=NULL)) \{")
1498 self.add("{res} = {name};")
1499 self.add("\} else \{")
1500 var native_mtype = mmodule.native_string_type
1501 var nat = self.new_var(native_mtype)
1502 self.add("{nat} = \"{string.escape_to_c}\";")
1503 var length = self.int_instance(string.length)
1504 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1505 self.add("{name} = {res};")
1510 fun value_instance(object: Object): RuntimeVariable
1512 if object isa Int then
1513 return int_instance(object)
1514 else if object isa Bool then
1515 return bool_instance(object)
1516 else if object isa String then
1517 return string_instance(object)
1523 # Generate an array value
1524 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1526 # Get an instance of a array for a vararg
1527 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1531 # Add a line in the main part of the generated C
1532 fun add(s: String) do self.writer.lines.add(s)
1535 # (used for local or global declaration)
1536 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1538 # Request the presence of a global declaration
1539 fun require_declaration(key: String)
1541 var reqs = self.writer.file.required_declarations
1542 if reqs.has(key) then return
1544 var node = current_node
1545 if node != null then compiler.requirers_of_declarations[key] = node
1548 # Add a declaration in the local-header
1549 # The declaration is ensured to be present once
1550 fun declare_once(s: String)
1552 self.compiler.provide_declaration(s, s)
1553 self.require_declaration(s)
1556 # Look for a needed .h and .c file for a given module
1557 # This is used for the legacy FFI
1558 fun add_extern(mmodule: MModule)
1560 var file = mmodule.location.file.filename
1561 file = file.strip_extension(".nit")
1562 var 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)
1567 tryfile = file + "_nit.h"
1568 if tryfile.file_exists then
1569 self.declare_once("#include \"{tryfile.basename("")}\"")
1570 self.compiler.files_to_copy.add(tryfile)
1573 if self.compiler.seen_extern.has(file) then return
1574 self.compiler.seen_extern.add(file)
1575 tryfile = file + ".nit.c"
1576 if not tryfile.file_exists then
1577 tryfile = file + "_nit.c"
1578 if not tryfile.file_exists then return
1580 var f = new ExternCFile(tryfile.basename(""), "")
1581 self.compiler.extern_bodies.add(f)
1582 self.compiler.files_to_copy.add(tryfile)
1585 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1586 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1588 var res = new_var(mtype)
1589 self.add("{res} = {cexpr};")
1593 # Generate generic abort
1594 # used by aborts, asserts, casts, etc.
1595 fun add_abort(message: String)
1597 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1603 if self.current_node != null and self.current_node.location.file != null and
1604 self.current_node.location.file.mmodule != null then
1605 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1606 self.require_declaration(f)
1607 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1609 self.add("PRINT_ERROR(\"\\n\");")
1611 self.add("fatal_exit(1);")
1614 # Add a dynamic cast
1615 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1617 var res = self.type_test(value, mtype, tag)
1618 self.add("if (unlikely(!{res})) \{")
1619 var cn = self.class_name_string(value)
1620 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1625 # Generate a return with the value `s
`
1626 fun ret(s: RuntimeVariable)
1628 self.assign(self.frame.returnvar.as(not null), s)
1629 self.add("goto {self.frame.returnlabel.as(not null)};")
1632 # Compile a statement (if any)
1633 fun stmt(nexpr: nullable AExpr)
1635 if nexpr == null then return
1636 if nexpr.mtype == null and not nexpr.is_typed then
1637 # Untyped expression.
1638 # Might mean dead code
1643 var narray = nexpr.comprehension
1644 if narray != null then
1645 var recv = frame.comprehension.as(not null)
1646 var val = expr(nexpr, narray.element_mtype)
1647 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1651 var old = self.current_node
1652 self.current_node = nexpr
1654 self.current_node = old
1657 # Compile an expression an return its result
1658 # `mtype
` is the expected return type, pass null if no specific type is expected.
1659 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1661 if nexpr.mtype == null then
1662 # Untyped expression.
1663 # Might mean dead code
1664 # so return a placebo result
1665 if mtype == null then mtype = compiler.mainmodule.object_type
1666 return new_var(mtype)
1668 var old = self.current_node
1669 self.current_node = nexpr
1670 var res = nexpr.expr(self).as(not null)
1671 if mtype != null then
1672 mtype = self.anchor(mtype)
1673 res = self.autobox(res, mtype)
1675 res = autoadapt(res, nexpr.mtype.as(not null))
1676 var implicit_cast_to = nexpr.implicit_cast_to
1677 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1678 add_cast(res, implicit_cast_to, "auto")
1679 res = autoadapt(res, implicit_cast_to)
1681 self.current_node = old
1685 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1686 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1688 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1689 fun debug(message: String)
1691 var node = self.current_node
1692 if node == null then
1693 print "?: {message}"
1697 self.add("/* DEBUG: {message} */")
1701 # A C function associated to a Nit method
1702 # Because of customization, a given Nit method can be compiler more that once
1703 abstract class AbstractRuntimeFunction
1705 type COMPILER: AbstractCompiler
1706 type VISITOR: AbstractCompilerVisitor
1708 # The associated Nit method
1709 var mmethoddef: MMethodDef
1711 # The mangled c name of the runtime_function
1712 # Subclasses should redefine `build_c_name
` instead
1715 var res = self.c_name_cache
1716 if res != null then return res
1717 res = self.build_c_name
1718 self.c_name_cache = res
1722 # Non cached version of `c_name
`
1723 protected fun build_c_name: String is abstract
1725 protected var c_name_cache: nullable String = null is writable
1727 # Implements a call of the runtime_function
1728 # May inline the body or generate a C function call
1729 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1731 # Generate the code for the `AbstractRuntimeFunction`
1732 # Warning: compile more than once compilation makes CC unhappy
1733 fun compile_to_c(compiler: COMPILER) is abstract
1736 # A runtime variable hold a runtime value in C.
1737 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1739 # 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.
1740 class RuntimeVariable
1741 # The name of the variable in the C code
1744 # The static type of the variable (as declard in C)
1747 # The current casted type of the variable (as known in Nit)
1748 var mcasttype: MType is writable
1750 # If the variable exaclty a mcasttype?
1751 # false (usual value) means that the variable is a mcasttype or a subtype.
1752 var is_exact: Bool = false is writable
1756 assert not mtype.need_anchor
1757 assert not mcasttype.need_anchor
1760 redef fun to_s do return name
1765 if self.is_exact then
1766 exact_str = " exact"
1771 if self.mtype == self.mcasttype then
1772 type_str = "{mtype}{exact_str}"
1774 type_str = "{mtype}({mcasttype}{exact_str})"
1776 return "<{name}:{type_str}>"
1780 # The static context of a visited property in a `AbstractCompilerVisitor`
1783 type VISITOR: AbstractCompilerVisitor
1785 # The associated visitor
1786 var visitor: VISITOR
1788 # The executed property.
1789 # A Method in case of a call, an attribute in case of a default initialization.
1790 var mpropdef: MPropDef
1792 # The static type of the receiver
1793 var receiver: MClassType
1795 # Arguments of the method (the first is the receiver)
1796 var arguments: Array[RuntimeVariable]
1798 # The runtime_variable associated to the return (in a function)
1799 var returnvar: nullable RuntimeVariable = null is writable
1801 # The label at the end of the property
1802 var returnlabel: nullable String = null is writable
1804 # Labels associated to a each escapemarks.
1805 # Because of inlinings, escape-marks must be associated to their context (the frame)
1806 private var escapemark_names = new HashMap[EscapeMark, String]
1808 # The array comprehension currently filled, if any
1809 private var comprehension: nullable RuntimeVariable = null
1813 # Return the C type associated to a given Nit static type
1814 fun ctype: String do return "val*"
1816 # C type outside of the compiler code and in boxes
1817 fun ctype_extern: String do return "val*"
1819 # Short name of the `ctype
` to use in unions
1820 fun ctypename: String do return "val"
1822 # Is the associated C type a primitive one?
1824 # ENSURE `result
== (ctype
!= "val*")`
1825 fun is_c_primitive: Bool do return false
1828 redef class MClassType
1830 redef var ctype is lazy do
1831 if mclass.name == "Int" then
1833 else if mclass.name == "Bool" then
1835 else if mclass.name == "Char" then
1837 else if mclass.name == "Float" then
1839 else if mclass.name == "NativeString" then
1841 else if mclass.name == "NativeArray" then
1848 redef var is_c_primitive is lazy do return ctype != "val*"
1850 redef fun ctype_extern: String
1852 if mclass.kind == extern_kind then
1859 redef fun ctypename: String
1861 if mclass.name == "Int" then
1863 else if mclass.name == "Bool" then
1865 else if mclass.name == "Char" then
1867 else if mclass.name == "Float" then
1869 else if mclass.name == "NativeString" then
1871 else if mclass.name == "NativeArray" then
1872 #return "{self.arguments.first.ctype}*"
1880 redef class MPropDef
1881 type VISITOR: AbstractCompilerVisitor
1884 redef class MMethodDef
1885 # Can the body be inlined?
1886 fun can_inline(v: VISITOR): Bool
1888 if is_abstract then return true
1889 var modelbuilder = v.compiler.modelbuilder
1890 var node = modelbuilder.mpropdef2node(self)
1891 if node isa APropdef then
1892 return node.can_inline
1893 else if node isa AClassdef then
1894 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1901 # Inline the body in another visitor
1902 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1904 var modelbuilder = v.compiler.modelbuilder
1905 var val = constant_value
1906 var node = modelbuilder.mpropdef2node(self)
1909 var cn = v.class_name_string(arguments.first)
1910 v.current_node = node
1911 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1916 if node isa APropdef 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 node isa AClassdef then
1923 var oldnode = v.current_node
1924 v.current_node = node
1925 self.compile_parameter_check(v, arguments)
1926 node.compile_to_c(v, self, arguments)
1927 v.current_node = oldnode
1928 else if val != null then
1929 v.ret(v.value_instance(val))
1936 # Generate type checks in the C code to check covariant parameters
1937 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1939 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1941 for i in [0..msignature.arity[ do
1942 # skip test for vararg since the array is instantiated with the correct polymorphic type
1943 if msignature.vararg_rank == i then continue
1945 # skip if the cast is not required
1946 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1947 if not origmtype.need_anchor then continue
1949 # get the parameter type
1950 var mtype = self.msignature.mparameters[i].mtype
1953 # note that v decides if and how to implements the cast
1954 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1955 v.add_cast(arguments[i+1], mtype, "covariance")
1962 redef class APropdef
1963 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1965 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1966 debug("Not yet implemented")
1969 fun can_inline: Bool do return true
1972 redef class AMethPropdef
1973 redef fun compile_to_c(v, mpropdef, arguments)
1975 # Call the implicit super-init
1976 var auto_super_inits = self.auto_super_inits
1977 if auto_super_inits != null then
1978 var args = [arguments.first]
1979 for auto_super_init in auto_super_inits do
1980 assert auto_super_init.mproperty != mpropdef.mproperty
1982 for i in [0..auto_super_init.msignature.arity+1[ do
1983 args.add(arguments[i])
1985 assert auto_super_init.mproperty != mpropdef.mproperty
1986 v.compile_callsite(auto_super_init, args)
1989 if auto_super_call then
1990 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
1993 # Try special compilation
1994 if mpropdef.is_intern then
1995 if compile_intern_to_c(v, mpropdef, arguments) then return
1996 else if mpropdef.is_extern then
1997 if mpropdef.mproperty.is_init then
1998 if compile_externinit_to_c(v, mpropdef, arguments) then return
2000 if compile_externmeth_to_c(v, mpropdef, arguments) then return
2004 # Compile block if any
2005 var n_block = n_block
2006 if n_block != null then
2007 for i in [0..mpropdef.msignature.arity[ do
2008 var variable = self.n_signature.n_params[i].variable.as(not null)
2009 v.assign(v.variable(variable), arguments[i+1])
2016 var cn = v.class_name_string(arguments.first)
2017 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2021 redef fun can_inline
2023 if self.auto_super_inits != null then return false
2024 var nblock = self.n_block
2025 if nblock == null then return true
2026 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2027 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2031 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2033 var pname = mpropdef.mproperty.name
2034 var cname = mpropdef.mclassdef.mclass.name
2035 var ret = mpropdef.msignature.return_mtype
2037 ret = v.resolve_for(ret, arguments.first)
2039 if pname != "==" and pname != "!=" then
2040 v.adapt_signature(mpropdef, arguments)
2041 v.unbox_signature_extern(mpropdef, arguments)
2043 if cname == "Int" then
2044 if pname == "output" then
2045 v.add("printf(\"%ld\\n\", {arguments.first});")
2047 else if pname == "object_id" then
2048 v.ret(arguments.first)
2050 else if pname == "+" then
2051 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", 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 == "unary -" then
2057 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2059 else if pname == "unary +" then
2062 else if pname == "*" then
2063 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2065 else if pname == "/" then
2066 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2068 else if pname == "%" then
2069 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2071 else if pname == "lshift" then
2072 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2074 else if pname == "rshift" then
2075 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2077 else if pname == "==" then
2078 v.ret(v.equal_test(arguments[0], arguments[1]))
2080 else if pname == "!=" then
2081 var res = v.equal_test(arguments[0], arguments[1])
2082 v.ret(v.new_expr("!{res}", 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 == ">" then
2088 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2090 else if pname == "<=" then
2091 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2093 else if pname == ">=" then
2094 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2096 else if pname == "to_f" then
2097 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2099 else if pname == "ascii" then
2100 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2103 else if cname == "Char" then
2104 if pname == "output" then
2105 v.add("printf(\"%c\", {arguments.first});")
2107 else if pname == "object_id" then
2108 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2110 else if pname == "successor" then
2111 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2113 else if pname == "predecessor" then
2114 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2116 else if pname == "==" then
2117 v.ret(v.equal_test(arguments[0], arguments[1]))
2119 else if pname == "!=" then
2120 var res = v.equal_test(arguments[0], arguments[1])
2121 v.ret(v.new_expr("!{res}", 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 == ">" then
2127 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2129 else if pname == "<=" then
2130 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2132 else if pname == ">=" then
2133 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2135 else if pname == "to_i" then
2136 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2138 else if pname == "ascii" then
2139 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2142 else if cname == "Bool" then
2143 if pname == "output" then
2144 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2146 else if pname == "object_id" then
2147 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2149 else if pname == "==" then
2150 v.ret(v.equal_test(arguments[0], arguments[1]))
2152 else if pname == "!=" then
2153 var res = v.equal_test(arguments[0], arguments[1])
2154 v.ret(v.new_expr("!{res}", ret.as(not null)))
2157 else if cname == "Float" then
2158 if pname == "output" then
2159 v.add("printf(\"%f\\n\", {arguments.first});")
2161 else if pname == "object_id" then
2162 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2164 else if pname == "+" then
2165 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2167 else if pname == "-" then
2168 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2170 else if pname == "unary -" then
2171 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2173 else if pname == "unary +" then
2176 else if pname == "succ" then
2177 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2179 else if pname == "prec" then
2180 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2182 else if pname == "*" then
2183 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2185 else if pname == "/" then
2186 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2188 else if pname == "==" then
2189 v.ret(v.equal_test(arguments[0], arguments[1]))
2191 else if pname == "!=" then
2192 var res = v.equal_test(arguments[0], arguments[1])
2193 v.ret(v.new_expr("!{res}", ret.as(not null)))
2195 else if pname == "<" then
2196 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2198 else if pname == ">" then
2199 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2201 else if pname == "<=" then
2202 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2204 else if pname == ">=" then
2205 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2207 else if pname == "to_i" then
2208 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2211 else if cname == "NativeString" then
2212 if pname == "[]" then
2213 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2215 else if pname == "[]=" then
2216 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2218 else if pname == "copy_to" then
2219 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2221 else if pname == "atoi" then
2222 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2224 else if pname == "fast_cstring" then
2225 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2227 else if pname == "new" then
2228 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2231 else if cname == "NativeArray" then
2232 v.native_array_def(pname, ret, arguments)
2235 if pname == "exit" then
2236 v.add("exit({arguments[1]});")
2238 else if pname == "sys" then
2239 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2241 else if pname == "calloc_string" then
2242 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2244 else if pname == "calloc_array" then
2245 v.calloc_array(ret.as(not null), arguments)
2247 else if pname == "object_id" then
2248 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2250 else if pname == "is_same_type" then
2251 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2253 else if pname == "is_same_instance" then
2254 v.ret(v.equal_test(arguments[0], arguments[1]))
2256 else if pname == "output_class_name" then
2257 var nat = v.class_name_string(arguments.first)
2258 v.add("printf(\"%s\\n\", {nat});")
2260 else if pname == "native_class_name" then
2261 var nat = v.class_name_string(arguments.first)
2262 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2264 else if pname == "force_garbage_collection" then
2265 v.add("nit_gcollect();")
2267 else if pname == "native_argc" then
2268 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2270 else if pname == "native_argv" then
2271 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2277 # Compile an extern method
2278 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2279 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2282 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2283 if at != null and at.n_args.length == 1 then
2284 externname = at.arg_as_string(v.compiler.modelbuilder)
2285 if externname == null then return false
2289 v.add_extern(mpropdef.mclassdef.mmodule)
2290 var res: nullable RuntimeVariable = null
2291 var ret = mpropdef.msignature.return_mtype
2293 ret = v.resolve_for(ret, arguments.first)
2294 res = v.new_var_extern(ret)
2296 v.adapt_signature(mpropdef, arguments)
2297 v.unbox_signature_extern(mpropdef, arguments)
2300 v.add("{externname}({arguments.join(", ")});")
2302 v.add("{res} = {externname}({arguments.join(", ")});")
2303 res = v.box_extern(res, ret.as(not null))
2309 # Compile an extern factory
2310 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2311 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2314 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2316 externname = at.arg_as_string(v.compiler.modelbuilder)
2317 if externname == null then return false
2321 v.add_extern(mpropdef.mclassdef.mmodule)
2322 v.adapt_signature(mpropdef, arguments)
2323 v.unbox_signature_extern(mpropdef, arguments)
2324 var ret = arguments.first.mtype
2325 var res = v.new_var_extern(ret)
2329 v.add("{res} = {externname}({arguments.join(", ")});")
2330 res = v.box_extern(res, ret)
2336 redef class AAttrPropdef
2337 redef fun can_inline: Bool do return not is_lazy
2339 redef fun compile_to_c(v, mpropdef, arguments)
2341 if mpropdef == mreadpropdef then
2342 assert arguments.length == 1
2343 var recv = arguments.first
2347 var ret = self.mpropdef.static_mtype
2348 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2349 var guard = self.mlazypropdef.mproperty
2351 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2353 set = v.read_attribute(guard, recv)
2355 v.add("if(likely({set})) \{")
2356 res = v.read_attribute(self.mpropdef.mproperty, recv)
2359 var value = evaluate_expr(v, recv)
2361 v.assign(res, value)
2363 var true_v = v.bool_instance(true)
2364 v.write_attribute(guard, arguments.first, true_v)
2368 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2370 v.assign(v.frame.returnvar.as(not null), res)
2371 else if mpropdef == mwritepropdef then
2372 assert arguments.length == 2
2373 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2375 var ret = self.mpropdef.static_mtype
2376 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2378 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2386 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2388 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2391 # Evaluate, store and return the default value of the attribute
2392 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2394 var oldnode = v.current_node
2395 v.current_node = self
2396 var old_frame = v.frame
2397 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.undecorate.as(MClassType), [recv])
2401 var mtype = self.mpropdef.static_mtype
2402 assert mtype != null
2404 var nexpr = self.n_expr
2405 var nblock = self.n_block
2406 if nexpr != null then
2407 value = v.expr(nexpr, mtype)
2408 else if nblock != null then
2409 value = v.new_var(mtype)
2410 frame.returnvar = value
2411 frame.returnlabel = v.get_name("RET_LABEL")
2414 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2420 v.write_attribute(self.mpropdef.mproperty, recv, value)
2423 v.current_node = oldnode
2428 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2430 var nexpr = self.n_expr
2431 if nexpr != null then return
2433 var oldnode = v.current_node
2434 v.current_node = self
2435 var old_frame = v.frame
2436 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2438 # Force read to check the initialization
2439 v.read_attribute(self.mpropdef.mproperty, recv)
2441 v.current_node = oldnode
2445 redef class AClassdef
2446 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2448 if mpropdef == self.mfree_init then
2449 assert mpropdef.mproperty.is_root_init
2450 assert arguments.length == 1
2451 if not mpropdef.is_intro then
2452 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2462 # Try to compile self as an expression
2463 # Do not call this method directly, use `v
.expr
` instead
2464 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2466 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2467 var mtype = self.mtype
2468 if mtype == null then
2471 var res = v.new_var(mtype)
2472 v.add("/* {res} = NOT YET {class_name} */")
2477 # Try to compile self as a statement
2478 # Do not call this method directly, use `v
.stmt
` instead
2479 private fun stmt(v: AbstractCompilerVisitor)
2485 redef class ABlockExpr
2488 for e in self.n_expr do v.stmt(e)
2492 var last = self.n_expr.last
2493 for e in self.n_expr do
2494 if e == last then break
2497 return v.expr(last, null)
2501 redef class AVardeclExpr
2504 var variable = self.variable.as(not null)
2505 var ne = self.n_expr
2507 var i = v.expr(ne, variable.declared_type)
2508 v.assign(v.variable(variable), i)
2513 redef class AVarExpr
2516 var res = v.variable(self.variable.as(not null))
2517 var mtype = self.mtype.as(not null)
2518 return v.autoadapt(res, mtype)
2522 redef class AVarAssignExpr
2525 var variable = self.variable.as(not null)
2526 var i = v.expr(self.n_value, variable.declared_type)
2527 v.assign(v.variable(variable), i)
2532 redef class AVarReassignExpr
2535 var variable = self.variable.as(not null)
2536 var vari = v.variable(variable)
2537 var value = v.expr(self.n_value, variable.declared_type)
2538 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2540 v.assign(v.variable(variable), res)
2544 redef class ASelfExpr
2545 redef fun expr(v) do return v.frame.arguments.first
2548 redef class AImplicitSelfExpr
2549 redef fun expr(v) do
2550 if not is_sys then return super
2551 return v.new_expr("glob_sys", mtype.as(not null))
2555 redef class AEscapeExpr
2556 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2559 redef class AReturnExpr
2562 var nexpr = self.n_expr
2563 if nexpr != null then
2564 var returnvar = v.frame.returnvar.as(not null)
2565 var i = v.expr(nexpr, returnvar.mtype)
2566 v.assign(returnvar, i)
2568 v.add("goto {v.frame.returnlabel.as(not null)};")
2572 redef class AAbortExpr
2573 redef fun stmt(v) do v.add_abort("Aborted")
2579 var cond = v.expr_bool(self.n_expr)
2580 v.add("if ({cond})\{")
2589 var res = v.new_var(self.mtype.as(not null))
2590 var cond = v.expr_bool(self.n_expr)
2591 v.add("if ({cond})\{")
2592 v.assign(res, v.expr(self.n_then.as(not null), null))
2594 v.assign(res, v.expr(self.n_else.as(not null), null))
2600 redef class AIfexprExpr
2603 var res = v.new_var(self.mtype.as(not null))
2604 var cond = v.expr_bool(self.n_expr)
2605 v.add("if ({cond})\{")
2606 v.assign(res, v.expr(self.n_then, null))
2608 v.assign(res, v.expr(self.n_else, null))
2617 v.stmt(self.n_block)
2618 v.add_escape_label(break_mark)
2622 redef class AWhileExpr
2626 var cond = v.expr_bool(self.n_expr)
2627 v.add("if (!{cond}) break;")
2628 v.stmt(self.n_block)
2629 v.add_escape_label(continue_mark)
2631 v.add_escape_label(break_mark)
2635 redef class ALoopExpr
2639 v.stmt(self.n_block)
2640 v.add_escape_label(continue_mark)
2642 v.add_escape_label(break_mark)
2646 redef class AForExpr
2649 var cl = v.expr(self.n_expr, null)
2650 var it_meth = self.method_iterator
2651 assert it_meth != null
2652 var it = v.compile_callsite(it_meth, [cl])
2655 var isok_meth = self.method_is_ok
2656 assert isok_meth != null
2657 var ok = v.compile_callsite(isok_meth, [it])
2659 v.add("if(!{ok}) break;")
2660 if self.variables.length == 1 then
2661 var item_meth = self.method_item
2662 assert item_meth != null
2663 var i = v.compile_callsite(item_meth, [it])
2665 v.assign(v.variable(variables.first), i)
2666 else if self.variables.length == 2 then
2667 var key_meth = self.method_key
2668 assert key_meth != null
2669 var i = v.compile_callsite(key_meth, [it])
2671 v.assign(v.variable(variables[0]), i)
2672 var item_meth = self.method_item
2673 assert item_meth != null
2674 i = v.compile_callsite(item_meth, [it])
2676 v.assign(v.variable(variables[1]), i)
2680 v.stmt(self.n_block)
2681 v.add_escape_label(continue_mark)
2682 var next_meth = self.method_next
2683 assert next_meth != null
2684 v.compile_callsite(next_meth, [it])
2686 v.add_escape_label(break_mark)
2688 var method_finish = self.method_finish
2689 if method_finish != null then
2690 # TODO: Find a way to call this also in long escape (e.g. return)
2691 v.compile_callsite(method_finish, [it])
2696 redef class AAssertExpr
2699 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2701 var cond = v.expr_bool(self.n_expr)
2702 v.add("if (unlikely(!{cond})) \{")
2706 v.add_abort("Assert '{nid.text}' failed")
2708 v.add_abort("Assert failed")
2717 var res = v.new_var(self.mtype.as(not null))
2718 var i1 = v.expr_bool(self.n_expr)
2719 v.add("if ({i1}) \{")
2722 var i2 = v.expr_bool(self.n_expr2)
2723 v.add("{res} = {i2};")
2729 redef class AImpliesExpr
2732 var res = v.new_var(self.mtype.as(not null))
2733 var i1 = v.expr_bool(self.n_expr)
2734 v.add("if (!{i1}) \{")
2737 var i2 = v.expr_bool(self.n_expr2)
2738 v.add("{res} = {i2};")
2744 redef class AAndExpr
2747 var res = v.new_var(self.mtype.as(not null))
2748 var i1 = v.expr_bool(self.n_expr)
2749 v.add("if (!{i1}) \{")
2752 var i2 = v.expr_bool(self.n_expr2)
2753 v.add("{res} = {i2};")
2759 redef class ANotExpr
2762 var cond = v.expr_bool(self.n_expr)
2763 return v.new_expr("!{cond}", self.mtype.as(not null))
2767 redef class AOrElseExpr
2770 var res = v.new_var(self.mtype.as(not null))
2771 var i1 = v.expr(self.n_expr, null)
2772 v.add("if ({i1}!=NULL) \{")
2775 var i2 = v.expr(self.n_expr2, null)
2782 redef class AIntExpr
2783 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2786 redef class AFloatExpr
2787 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2790 redef class ACharExpr
2791 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2794 redef class AArrayExpr
2797 var mtype = self.element_mtype.as(not null)
2798 var array = new Array[RuntimeVariable]
2799 var res = v.array_instance(array, mtype)
2801 var old_comprehension = v.frame.comprehension
2802 v.frame.comprehension = res
2803 for nexpr in self.n_exprs do
2806 v.frame.comprehension = old_comprehension
2812 redef class AStringFormExpr
2813 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2816 redef class ASuperstringExpr
2819 var type_string = mtype.as(not null)
2821 # Collect elements of the superstring
2822 var array = new Array[AExpr]
2823 for ne in self.n_exprs do
2824 # Drop literal empty string.
2825 # They appears in things like "{a}" that is ["", a, ""]
2826 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2830 # Store the allocated native array in a static variable
2832 var varonce = v.get_name("varonce")
2833 v.add("if (unlikely({varonce}==NULL)) \{")
2835 # The native array that will contains the elements to_s-ized.
2836 # For fast concatenation.
2837 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2839 v.add_decl("static {a.mtype.ctype} {varonce};")
2841 # Pre-fill the array with the literal string parts.
2842 # So they do not need to be filled again when reused
2843 for i in [0..array.length[ do
2845 if not ne isa AStringFormExpr then continue
2846 var e = v.expr(ne, null)
2847 v.native_array_set(a, i, e)
2851 # Take the native-array from the store.
2852 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2853 # WARNING: not thread safe! (FIXME?)
2854 v.add("{a} = {varonce};")
2855 v.add("{varonce} = NULL;")
2858 # Stringify the elements and put them in the native array
2859 var to_s_method = v.get_property("to_s", v.object_type)
2860 for i in [0..array.length[ do
2862 if ne isa AStringFormExpr then continue
2863 var e = v.expr(ne, null)
2864 # Skip the `to_s
` if the element is already a String
2865 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2866 e = v.send(to_s_method, [e]).as(not null)
2868 v.native_array_set(a, i, e)
2871 # Fast join the native string to get the result
2872 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2874 # We finish to work with the native array,
2875 # so store it so that it can be reused
2876 v.add("{varonce} = {a};")
2881 redef class ACrangeExpr
2884 var i1 = v.expr(self.n_expr, null)
2885 var i2 = v.expr(self.n_expr2, null)
2886 var mtype = self.mtype.as(MClassType)
2887 var res = v.init_instance(mtype)
2888 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2893 redef class AOrangeExpr
2896 var i1 = v.expr(self.n_expr, null)
2897 var i2 = v.expr(self.n_expr2, null)
2898 var mtype = self.mtype.as(MClassType)
2899 var res = v.init_instance(mtype)
2900 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2905 redef class ATrueExpr
2906 redef fun expr(v) do return v.bool_instance(true)
2909 redef class AFalseExpr
2910 redef fun expr(v) do return v.bool_instance(false)
2913 redef class ANullExpr
2914 redef fun expr(v) do return v.null_instance
2917 redef class AIsaExpr
2920 var i = v.expr(self.n_expr, null)
2921 return v.type_test(i, self.cast_type.as(not null), "isa")
2925 redef class AAsCastExpr
2928 var i = v.expr(self.n_expr, null)
2929 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2931 v.add_cast(i, self.mtype.as(not null), "as")
2936 redef class AAsNotnullExpr
2939 var i = v.expr(self.n_expr, null)
2940 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2942 if i.mtype.is_c_primitive then return i
2944 v.add("if (unlikely({i} == NULL)) \{")
2945 v.add_abort("Cast failed")
2951 redef class AParExpr
2952 redef fun expr(v) do return v.expr(self.n_expr, null)
2955 redef class AOnceExpr
2958 var mtype = self.mtype.as(not null)
2959 var name = v.get_name("varonce")
2960 var guard = v.get_name(name + "_guard")
2961 v.add_decl("static {mtype.ctype} {name};")
2962 v.add_decl("static int {guard};")
2963 var res = v.new_var(mtype)
2964 v.add("if (likely({guard})) \{")
2965 v.add("{res} = {name};")
2967 var i = v.expr(self.n_expr, mtype)
2968 v.add("{res} = {i};")
2969 v.add("{name} = {res};")
2970 v.add("{guard} = 1;")
2976 redef class ASendExpr
2979 var recv = v.expr(self.n_expr, null)
2980 var callsite = self.callsite.as(not null)
2981 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.raw_arguments)
2982 return v.compile_callsite(callsite, args)
2986 redef class ASendReassignFormExpr
2989 var recv = v.expr(self.n_expr, null)
2990 var callsite = self.callsite.as(not null)
2991 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.raw_arguments)
2993 var value = v.expr(self.n_value, null)
2995 var left = v.compile_callsite(callsite, args)
2998 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
3002 v.compile_callsite(self.write_callsite.as(not null), args)
3006 redef class ASuperExpr
3009 var recv = v.frame.arguments.first
3011 var callsite = self.callsite
3012 if callsite != null then
3015 if self.n_args.n_exprs.is_empty then
3016 # Add automatic arguments for the super init call
3018 for i in [0..callsite.msignature.arity[ do
3019 args.add(v.frame.arguments[i+1])
3022 args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.n_args.n_exprs)
3026 var res = v.compile_callsite(callsite, args)
3030 var mpropdef = self.mpropdef.as(not null)
3033 if self.n_args.n_exprs.is_empty then
3034 args = v.frame.arguments
3036 args = v.varargize(mpropdef, signaturemap, recv, self.n_args.n_exprs)
3039 # Standard call-next-method
3040 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3044 redef class ANewExpr
3047 var mtype = self.recvtype
3048 assert mtype != null
3050 if mtype.mclass.name == "NativeArray" then
3051 assert self.n_args.n_exprs.length == 1
3052 var l = v.expr(self.n_args.n_exprs.first, null)
3053 assert mtype isa MGenericType
3054 var elttype = mtype.arguments.first
3055 return v.native_array_instance(elttype, l)
3058 var recv = v.init_instance_or_extern(mtype)
3060 var callsite = self.callsite
3061 if callsite == null then return recv
3063 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.n_args.n_exprs)
3064 var res2 = v.compile_callsite(callsite, args)
3065 if res2 != null then
3066 #self.debug("got {res2} from {mproperty}. drop {recv}")
3073 redef class AAttrExpr
3076 var recv = v.expr(self.n_expr, null)
3077 var mproperty = self.mproperty.as(not null)
3078 return v.read_attribute(mproperty, recv)
3082 redef class AAttrAssignExpr
3085 var recv = v.expr(self.n_expr, null)
3086 var i = v.expr(self.n_value, null)
3087 var mproperty = self.mproperty.as(not null)
3088 v.write_attribute(mproperty, recv, i)
3093 redef class AAttrReassignExpr
3096 var recv = v.expr(self.n_expr, null)
3097 var value = v.expr(self.n_value, null)
3098 var mproperty = self.mproperty.as(not null)
3099 var attr = v.read_attribute(mproperty, recv)
3100 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3102 v.write_attribute(mproperty, recv, res)
3106 redef class AIssetAttrExpr
3109 var recv = v.expr(self.n_expr, null)
3110 var mproperty = self.mproperty.as(not null)
3111 return v.isset_attribute(mproperty, recv)
3115 redef class AVarargExpr
3118 return v.expr(self.n_expr, null)
3122 redef class ADebugTypeExpr
3131 redef class Array[E]
3132 # Return a new `Array` with the elements only contened in self and not in `o
`
3133 fun -(o: Array[E]): Array[E] do
3134 var res = new Array[E]
3135 for e in self do if not o.has(e) then res.add(e)
3141 # All `MProperty` associated to all `MClassDef` of `mclass
`
3142 fun properties(mclass: MClass): Set[MProperty] do
3143 if not self.properties_cache.has_key(mclass) then
3144 var properties = new HashSet[MProperty]
3145 var parents = new Array[MClass]
3146 if self.flatten_mclass_hierarchy.has(mclass) then
3147 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3149 for parent in parents do
3150 properties.add_all(self.properties(parent))
3152 for mclassdef in mclass.mclassdefs do
3153 if not self.in_importation <= mclassdef.mmodule then continue
3154 for mprop in mclassdef.intro_mproperties do
3155 properties.add(mprop)
3158 self.properties_cache[mclass] = properties
3160 return properties_cache[mclass]
3162 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3164 # Write FFI and nitni results to file
3165 fun finalize_ffi(c: AbstractCompiler) do end
3167 # Give requided addinional system libraries (as given to LD_LIBS)
3168 # Note: can return null instead of an empty set
3169 fun collect_linker_libs: nullable Array[String] do return null
3172 # Create a tool context to handle options and paths
3173 var toolcontext = new ToolContext
3175 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3177 # We do not add other options, so process them now!
3178 toolcontext.process_options(args)
3180 # We need a model to collect stufs
3181 var model = new Model
3182 # An a model builder to parse files
3183 var modelbuilder = new ModelBuilder(model, toolcontext)
3185 var arguments = toolcontext.option_context.rest
3186 if arguments.length > 1 and toolcontext.opt_output.value != null then
3187 print "Option Error: --output needs a single source file. Do you prefer --dir?"
3191 # Here we load an process all modules passed on the command line
3192 var mmodules = modelbuilder.parse(arguments)
3194 if mmodules.is_empty then return
3195 modelbuilder.run_phases
3197 for mmodule in mmodules do
3198 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3200 toolcontext.run_global_phases(ms)