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 # Simple indirection to `Toolchain::write_and_make`
119 protected fun write_and_make
(compiler
: AbstractCompiler)
121 var platform
= compiler
.target_platform
122 var toolchain
= platform
.toolchain
(toolcontext
, compiler
)
123 compiler
.toolchain
= toolchain
124 toolchain
.write_and_make
129 # The specific tool-chain associated to the platform
130 fun toolchain
(toolcontext
: ToolContext, compiler
: AbstractCompiler): Toolchain
132 return new MakefileToolchain(toolcontext
, compiler
)
136 # Build toolchain for a specific target program, varies per `Platform`
140 var toolcontext
: ToolContext
142 # Compiler of the target program
143 var compiler
: AbstractCompiler
145 # Directory where to generate all files
147 # The option `--compile_dir` change this directory.
148 fun root_compile_dir
: String
150 var compile_dir
= toolcontext
.opt_compile_dir
.value
151 if compile_dir
== null then compile_dir
= "nit_compile"
155 # Directory where to generate all C files
157 # By default it is `root_compile_dir` but some platform may require that it is a subdirectory.
158 fun compile_dir
: String do return root_compile_dir
160 # Write all C files and compile them
161 fun write_and_make
is abstract
164 # Default toolchain using a Makefile
165 class MakefileToolchain
168 redef fun write_and_make
170 var compile_dir
= compile_dir
172 # Generate the .h and .c files
173 # A single C file regroups many compiled rumtime functions
174 # 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
176 self.toolcontext
.info
("*** WRITING C ***", 1)
178 root_compile_dir
.mkdir
181 var cfiles
= new Array[String]
182 write_files
(compile_dir
, cfiles
)
184 # Generate the Makefile
186 write_makefile
(compile_dir
, cfiles
)
189 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
191 # Execute the Makefile
193 if self.toolcontext
.opt_no_cc
.value
then return
196 self.toolcontext
.info
("*** COMPILING C ***", 1)
198 compile_c_code
(compile_dir
)
201 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
204 # Write all source files to the `compile_dir`
205 fun write_files
(compile_dir
: String, cfiles
: Array[String])
207 var platform
= compiler
.target_platform
208 if self.toolcontext
.opt_stacktrace
.value
== "nitstack" and platform
.supports_libunwind
then compiler
.build_c_to_nit_bindings
209 var cc_opt_with_libgc
= "-DWITH_LIBGC"
210 if not platform
.supports_libgc
then cc_opt_with_libgc
= ""
212 # Add gc_choser.h to aditionnal bodies
213 var gc_chooser
= new ExternCFile("gc_chooser.c", cc_opt_with_libgc
)
214 if cc_opt_with_libgc
!= "" then gc_chooser
.pkgconfigs
.add
"bdw-gc"
215 compiler
.extern_bodies
.add
(gc_chooser
)
216 var clib
= toolcontext
.nit_dir
/ "clib"
217 compiler
.files_to_copy
.add
"{clib}/gc_chooser.c"
218 compiler
.files_to_copy
.add
"{clib}/gc_chooser.h"
221 for m
in compiler
.mainmodule
.in_importation
.greaters
do
222 compiler
.finalize_ffi_for_module
(m
)
225 # Copy original .[ch] files to compile_dir
226 for src
in compiler
.files_to_copy
do
227 var basename
= src
.basename
("")
228 var dst
= "{compile_dir}/{basename}"
232 var hfilename
= compiler
.header
.file
.name
+ ".h"
233 var hfilepath
= "{compile_dir}/{hfilename}"
234 var h
= new FileWriter.open
(hfilepath
)
235 for l
in compiler
.header
.decl_lines
do
239 for l
in compiler
.header
.lines
do
245 var max_c_lines
= toolcontext
.opt_max_c_lines
.value
246 for f
in compiler
.files
do
249 var file
: nullable FileWriter = null
250 for vis
in f
.writers
do
251 if vis
== compiler
.header
then continue
252 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
253 if total_lines
== 0 then continue
255 if file
== null or (count
> max_c_lines
and max_c_lines
> 0) then
257 if file
!= null then file
.close
258 var cfilename
= "{f.name}.{i}.c"
259 var cfilepath
= "{compile_dir}/{cfilename}"
260 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
261 cfiles
.add
(cfilename
)
262 file
= new FileWriter.open
(cfilepath
)
263 file
.write
"#include \"{f.name}.0.h\
"\n"
266 for l
in vis
.decl_lines
do
270 for l
in vis
.lines
do
275 if file
== null then continue
278 var cfilename
= "{f.name}.0.h"
279 var cfilepath
= "{compile_dir}/{cfilename}"
280 var hfile
: nullable FileWriter = null
281 hfile
= new FileWriter.open
(cfilepath
)
282 hfile
.write
"#include \"{hfilename}\
"\n"
283 for key
in f
.required_declarations
do
284 if not compiler
.provided_declarations
.has_key
(key
) then
285 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
287 node
.debug
"No provided declaration for {key}"
289 print
"No provided declaration for {key}"
293 hfile
.write compiler
.provided_declarations
[key
]
299 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
302 # Get the name of the Makefile to use
303 fun makefile_name
: String do return "{compiler.mainmodule.c_name}.mk"
305 # Get the default name of the executable to produce
306 fun default_outname
: String
308 var mainmodule
= compiler
.mainmodule
.first_real_mmodule
309 return mainmodule
.name
312 # Combine options and platform informations to get the final path of the outfile
313 fun outfile
(mainmodule
: MModule): String
315 var res
= self.toolcontext
.opt_output
.value
316 if res
!= null then return res
317 res
= default_outname
318 var dir
= self.toolcontext
.opt_dir
.value
319 if dir
!= null then return dir
.join_path
(res
)
324 fun write_makefile
(compile_dir
: String, cfiles
: Array[String])
326 var mainmodule
= compiler
.mainmodule
327 var platform
= compiler
.target_platform
329 var outname
= outfile
(mainmodule
)
331 var real_outpath
= compile_dir
.relpath
(outname
)
332 var outpath
= real_outpath
.escape_to_mk
333 if outpath
!= real_outpath
then
334 # If the name is crazy and need escaping, we will do an indirection
335 # 1. generate the binary in the nit_compile dir under an escaped name
336 # 2. copy the binary at the right place in the `all` goal.
337 outpath
= mainmodule
.c_name
339 var makename
= makefile_name
340 var makepath
= "{compile_dir}/{makename}"
341 var makefile
= new FileWriter.open
(makepath
)
343 var linker_options
= new HashSet[String]
344 for m
in mainmodule
.in_importation
.greaters
do
345 var libs
= m
.collect_linker_libs
346 if libs
!= null then linker_options
.add_all
(libs
)
349 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")
351 var ost
= toolcontext
.opt_stacktrace
.value
352 if (ost
== "libunwind" or ost
== "nitstack") and platform
.supports_libunwind
then makefile
.write
("NEED_LIBUNWIND := YesPlease\n")
354 # Dynamic adaptations
355 # While `platform` enable complex toolchains, they are statically applied
356 # For a dynamic adaptsation of the compilation, the generated Makefile should check and adapt things itself
358 # Check and adapt the targeted system
359 makefile
.write
("uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')\n")
360 makefile
.write
("ifeq ($(uname_S),Darwin)\n")
361 # remove -lunwind since it is already included on macosx
362 makefile
.write
("\tNEED_LIBUNWIND :=\n")
363 makefile
.write
("endif\n\n")
365 # Check and adapt for the compiler used
366 # clang need an additionnal `-Qunused-arguments`
367 makefile
.write
("clang_check := $(shell sh -c '$(CC) -v 2>&1 | grep -q clang; echo $$?')\nifeq ($(clang_check), 0)\n\tCFLAGS += -Qunused-arguments\nendif\n")
369 makefile
.write
("ifdef NEED_LIBUNWIND\n\tLDLIBS += -lunwind\nendif\n")
371 makefile
.write
("all: {outpath}\n")
372 if outpath
!= real_outpath
then
373 makefile
.write
("\tcp -- {outpath.escape_to_sh} {real_outpath.escape_to_sh.replace("$","$$")}")
377 var ofiles
= new Array[String]
378 var dep_rules
= new Array[String]
379 # Compile each generated file
381 var o
= f
.strip_extension
(".c") + ".o"
382 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
387 # Generate linker script, if any
388 if not compiler
.linker_script
.is_empty
then
389 var linker_script_path
= "{compile_dir}/linker_script"
390 ofiles
.add
"linker_script"
391 var f
= new FileWriter.open
(linker_script_path
)
392 for l
in compiler
.linker_script
do
399 var java_files
= new Array[ExternFile]
401 var pkgconfigs
= new Array[String]
402 for f
in compiler
.extern_bodies
do
403 pkgconfigs
.add_all f
.pkgconfigs
406 if not pkgconfigs
.is_empty
then
408 # does pkg-config exists?
409 ifneq ($(shell which pkg-config >/dev/null; echo $$?), 0)
410 $(error "Command `pkg-config` not found. Please install it")
413 for p
in pkgconfigs
do
415 # Check for library {{{p}}}
416 ifneq ($(shell pkg-config --exists '{{{p}}}'; echo $$?), 0)
417 $(error "pkg-config: package {{{p}}} is not found.")
423 # Compile each required extern body into a specific .o
424 for f
in compiler
.extern_bodies
do
425 var o
= f
.makefile_rule_name
426 var ff
= f
.filename
.basename
("")
427 makefile
.write
("{o}: {ff}\n")
428 makefile
.write
("\t{f.makefile_rule_content}\n\n")
429 dep_rules
.add
(f
.makefile_rule_name
)
431 if f
.compiles_to_o_file
then ofiles
.add
(o
)
432 if f
.add_to_jar
then java_files
.add
(f
)
435 if not java_files
.is_empty
then
436 var jar_file
= "{outpath}.jar"
438 var class_files_array
= new Array[String]
439 for f
in java_files
do class_files_array
.add
(f
.makefile_rule_name
)
440 var class_files
= class_files_array
.join
(" ")
442 makefile
.write
("{jar_file}: {class_files}\n")
443 makefile
.write
("\tjar cf {jar_file} {class_files}\n\n")
444 dep_rules
.add jar_file
449 if not pkgconfigs
.is_empty
then
450 pkg
= "`pkg-config --libs {pkgconfigs.join(" ")}`"
452 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath.escape_to_sh} {ofiles.join(" ")} $(LDLIBS) {pkg}\n\n")
454 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n")
455 if outpath
!= real_outpath
then
456 makefile
.write
("\trm -- {outpath.escape_to_sh} 2>/dev/null\n")
459 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
461 makepath
.file_copy_to
"{compile_dir}/Makefile"
464 # The C code is generated, compile it to an executable
465 fun compile_c_code
(compile_dir
: String)
467 var makename
= makefile_name
469 var makeflags
= self.toolcontext
.opt_make_flags
.value
470 if makeflags
== null then makeflags
= ""
472 var command
= "make -B -C {compile_dir} -f {makename} -j 4 {makeflags}"
473 self.toolcontext
.info
(command
, 2)
476 if self.toolcontext
.verbose_level
>= 3 then
477 res
= sys
.system
("{command} 2>&1")
479 res
= sys
.system
("{command} 2>&1 >/dev/null")
482 toolcontext
.error
(null, "Compilation Error: `make` failed with error code: {res}. The command was `{command}`.")
487 # Singleton that store the knowledge about the compilation process
488 abstract class AbstractCompiler
489 type VISITOR: AbstractCompilerVisitor
491 # Table corresponding c_names to nit names (methods)
492 var names
= new HashMap[String, String]
494 # The main module of the program currently compiled
495 # Is assigned during the separate compilation
496 var mainmodule
: MModule is writable
498 # The real main module of the program
499 var realmainmodule
: MModule is noinit
501 # The modelbuilder used to know the model and the AST
502 var modelbuilder
: ModelBuilder is protected writable
504 # The associated toolchain
506 # Set by `modelbuilder.write_and_make` and permit sub-routines to access the current toolchain if required.
507 var toolchain
: Toolchain is noinit
509 # Is hardening asked? (see --hardening)
510 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
512 # The targeted specific platform
513 var target_platform
: Platform is noinit
517 self.realmainmodule
= mainmodule
518 target_platform
= mainmodule
.target_platform
or else new Platform
521 # Do the full code generation of the program `mainmodule`
522 # It is the main method usually called after the instantiation
523 fun do_compilation
is abstract
525 # Force the creation of a new file
526 # The point is to avoid contamination between must-be-compiled-separately files
527 fun new_file
(name
: String): CodeFile
529 if modelbuilder
.toolcontext
.opt_group_c_files
.value
then
530 if self.files
.is_empty
then
531 var f
= new CodeFile(mainmodule
.c_name
)
534 return self.files
.first
536 var f
= new CodeFile(name
)
541 # The list of all associated files
542 # Used to generate .c files
543 var files
= new List[CodeFile]
545 # Initialize a visitor specific for a compiler engine
546 fun new_visitor
: VISITOR is abstract
548 # Where global declaration are stored (the main .h)
549 var header
: CodeWriter is writable, noinit
551 # Additionnal linker script for `ld`.
552 # Mainly used to do specific link-time symbol resolution
553 var linker_script
= new Array[String]
555 # Provide a declaration that can be requested (before or latter) by a visitor
556 fun provide_declaration
(key
: String, s
: String)
558 if self.provided_declarations
.has_key
(key
) then
559 assert self.provided_declarations
[key
] == s
561 self.provided_declarations
[key
] = s
564 private var provided_declarations
= new HashMap[String, String]
566 private var requirers_of_declarations
= new HashMap[String, ANode]
568 # Builds the .c and .h files to be used when generating a Stack Trace
569 # Binds the generated C function names to Nit function names
570 fun build_c_to_nit_bindings
572 var compile_dir
= toolchain
.compile_dir
574 var stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.c")
575 stream
.write
("#include <string.h>\n")
576 stream
.write
("#include <stdlib.h>\n")
577 stream
.write
("#include \"c_functions_hash
.h\
"\n")
578 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
579 stream
.write
("const char* get_nit_name(register const char* procproc, register unsigned int len)\{\n")
580 stream
.write
("char* procname = malloc(len+1);")
581 stream
.write
("memcpy(procname, procproc, len);")
582 stream
.write
("procname[len] = '\\0';")
583 stream
.write
("static const C_Nit_Names map[{names.length}] = \{\n")
584 for i
in names
.keys
do
586 stream.write(i.escape_to_c)
587 stream.write("\
",\"")
588 stream.write(names[i].escape_to_c)
589 stream.write("\
"\},\n")
591 stream
.write
("\};\n")
592 stream
.write
("int i;")
593 stream
.write
("for(i = 0; i < {names.length}; i++)\{")
594 stream
.write
("if(strcmp(procname,map[i].name) == 0)\{")
595 stream
.write
("free(procname);")
596 stream
.write
("return map[i].nit_name;")
599 stream
.write
("free(procname);")
600 stream
.write
("return NULL;")
604 stream
= new FileWriter.open
("{compile_dir}/c_functions_hash.h")
605 stream
.write
("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
608 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
612 # This method call compile_header_strucs method that has to be refined
613 fun compile_header
do
614 self.header
.add_decl
("#include <stdlib.h>")
615 self.header
.add_decl
("#include <stdio.h>")
616 self.header
.add_decl
("#include <string.h>")
617 self.header
.add_decl
("#include <sys/types.h>\n")
618 self.header
.add_decl
("#include <unistd.h>\n")
619 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
620 self.header
.add_decl
("#ifdef ANDROID")
621 self.header
.add_decl
(" #include <android/log.h>")
622 self.header
.add_decl
(" #define PRINT_ERROR(...) (void)__android_log_print(ANDROID_LOG_WARN, \"Nit\
", __VA_ARGS__)")
623 self.header
.add_decl
("#else")
624 self.header
.add_decl
(" #define PRINT_ERROR(...) fprintf(stderr, __VA_ARGS__)")
625 self.header
.add_decl
("#endif")
627 compile_header_structs
628 compile_nitni_structs
630 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
631 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
632 # Signal handler function prototype
633 self.header
.add_decl
("void fatal_exit(int);")
635 self.header
.add_decl
("void fatal_exit(int) __attribute__ ((noreturn));")
638 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
639 self.header
.add_decl
("#define likely(x) (x)")
640 self.header
.add_decl
("#define unlikely(x) (x)")
641 else if gccd_disable
.has
("correct-likely") then
642 # invert the `likely` definition
643 # Used by masochists to bench the worst case
644 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
645 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
647 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
648 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
651 # Global variable used by intern methods
652 self.header
.add_decl
("extern int glob_argc;")
653 self.header
.add_decl
("extern char **glob_argv;")
654 self.header
.add_decl
("extern val *glob_sys;")
657 # Declaration of structures for live Nit types
658 protected fun compile_header_structs
is abstract
660 # Declaration of structures for nitni undelying the FFI
661 protected fun compile_nitni_structs
663 self.header
.add_decl
"""
664 /* Native reference to Nit objects */
665 /* This structure is used to represent every Nit type in extern methods and custom C code. */
667 struct nitni_ref *next,
668 *prev; /* adjacent global references in global list */
669 int count; /* number of time this global reference has been marked */
672 /* List of global references from C code to Nit objects */
673 /* Instanciated empty at init of Nit system and filled explicitly by user in C code */
674 struct nitni_global_ref_list_t {
675 struct nitni_ref *head, *tail;
677 extern struct nitni_global_ref_list_t *nitni_global_ref_list;
679 /* Initializer of global reference list */
680 extern void nitni_global_ref_list_init();
682 /* Intern function to add a global reference to the list */
683 extern void nitni_global_ref_add( struct nitni_ref *ref );
685 /* Intern function to remove a global reference from the list */
686 extern void nitni_global_ref_remove( struct nitni_ref *ref );
688 /* Increase count on an existing global reference */
689 extern void nitni_global_ref_incr( struct nitni_ref *ref );
691 /* Decrease count on an existing global reference */
692 extern void nitni_global_ref_decr( struct nitni_ref *ref );
696 fun compile_finalizer_function
698 var finalizable_type
= mainmodule
.finalizable_type
699 if finalizable_type
== null then return
701 var finalize_meth
= mainmodule
.try_get_primitive_method
("finalize", finalizable_type
.mclass
)
703 if finalize_meth
== null then
704 modelbuilder
.toolcontext
.error
(null, "Error: the `Finalizable` class does not declare the `finalize` method.")
708 var v
= self.new_visitor
709 v
.add_decl
"void gc_finalize (void *obj, void *client_data) \{"
710 var recv
= v
.new_expr
("obj", finalizable_type
)
711 v
.send
(finalize_meth
, [recv
])
715 # Generate the main C function.
719 # * allocate the Sys object if it exists
720 # * call init if is exists
721 # * call main if it exists
722 fun compile_main_function
724 var v
= self.new_visitor
725 v
.add_decl
("#include <signal.h>")
726 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
727 var platform
= target_platform
729 if not platform
.supports_libunwind
then ost
= "none"
731 var no_main
= platform
.no_main
or modelbuilder
.toolcontext
.opt_no_main
.value
733 if ost
== "nitstack" or ost
== "libunwind" then
734 v
.add_decl
("#define UNW_LOCAL_ONLY")
735 v
.add_decl
("#include <libunwind.h>")
736 if ost
== "nitstack" then
737 v
.add_decl
("#include \"c_functions_hash
.h\
"")
740 v
.add_decl
("int glob_argc;")
741 v
.add_decl
("char **glob_argv;")
742 v
.add_decl
("val *glob_sys;")
744 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
745 for tag
in count_type_test_tags
do
746 v
.add_decl
("long count_type_test_resolved_{tag};")
747 v
.add_decl
("long count_type_test_unresolved_{tag};")
748 v
.add_decl
("long count_type_test_skipped_{tag};")
749 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
750 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
751 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
755 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
756 v
.add_decl
("long count_invoke_by_tables;")
757 v
.add_decl
("long count_invoke_by_direct;")
758 v
.add_decl
("long count_invoke_by_inline;")
759 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
760 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
761 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
764 if self.modelbuilder
.toolcontext
.opt_isset_checks_metrics
.value
then
765 v
.add_decl
("long count_attr_reads = 0;")
766 v
.add_decl
("long count_isset_checks = 0;")
767 v
.compiler
.header
.add_decl
("extern long count_attr_reads;")
768 v
.compiler
.header
.add_decl
("extern long count_isset_checks;")
771 v
.add_decl
("static void show_backtrace(void) \{")
772 if ost
== "nitstack" or ost
== "libunwind" then
773 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
774 v
.add_decl
("unw_cursor_t cursor;")
775 v
.add_decl
("if(opt==NULL)\{")
776 v
.add_decl
("unw_context_t uc;")
777 v
.add_decl
("unw_word_t ip;")
778 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
779 v
.add_decl
("unw_getcontext(&uc);")
780 v
.add_decl
("unw_init_local(&cursor, &uc);")
781 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
782 v
.add_decl
("PRINT_ERROR(\"-- Stack Trace ------------------------------\\n\
");")
783 v
.add_decl
("PRINT_ERROR(\"-------------------------------------------------\\n\
");")
784 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
785 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
786 if ost
== "nitstack" then
787 v
.add_decl
(" const char* recv = get_nit_name(procname, strlen(procname));")
788 v
.add_decl
(" if (recv != NULL)\{")
789 v
.add_decl
(" PRINT_ERROR(\"` %s\\n\", recv);")
790 v.add_decl(" \}else\{")
791 v.add_decl(" PRINT_ERROR(\"` %s\\n\
", procname);")
794 v
.add_decl
(" PRINT_ERROR(\"` %s \\n\",procname);")
797 v.add_decl("PRINT_ERROR(\"-------------------------------------------------\\n\");")
798 v.add_decl("free(procname);")
803 v.add_decl("void sig_handler(int signo)\{")
804 v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
805 v.add_decl("show_backtrace();")
807 v.add_decl("signal(signo, SIG_DFL);")
808 v.add_decl("kill(getpid(), signo);")
811 v.add_decl("void fatal_exit(int status) \{")
812 v.add_decl("show_backtrace();")
813 v.add_decl("exit(status);")
817 v.add_decl("int nit_main(int argc, char** argv) \{")
819 v.add_decl("int main(int argc, char** argv) \{")
822 v.add("signal(SIGABRT, sig_handler);")
823 v.add("signal(SIGFPE, sig_handler);")
824 v.add("signal(SIGILL, sig_handler);")
825 v.add("signal(SIGINT, sig_handler);")
826 v.add("signal(SIGTERM, sig_handler);")
827 v.add("signal(SIGSEGV, sig_handler);")
828 v.add("signal(SIGPIPE, sig_handler);")
830 v.add("glob_argc = argc; glob_argv = argv;")
831 v.add("initialize_gc_option();")
833 v.add "initialize_nitni_global_refs();"
835 var main_type = mainmodule.sys_type
836 if main_type != null then
837 var mainmodule = v.compiler.mainmodule
838 var glob_sys = v.init_instance(main_type)
839 v.add("glob_sys = {glob_sys};")
840 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
841 if main_init != null then
842 v.send(main_init, [glob_sys])
844 var main_method = mainmodule.try_get_primitive_method("run", main_type.mclass) or else
845 mainmodule.try_get_primitive_method("main", main_type.mclass)
846 if main_method != null then
847 v.send(main_method, [glob_sys])
851 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
852 v.add_decl("long count_type_test_resolved_total = 0;")
853 v.add_decl("long count_type_test_unresolved_total = 0;")
854 v.add_decl("long count_type_test_skipped_total = 0;")
855 v.add_decl("long count_type_test_total_total = 0;")
856 for tag in count_type_test_tags do
857 v.add_decl("long count_type_test_total_{tag};")
858 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
859 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
860 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
861 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
862 v.add("count_type_test_total_total += count_type_test_total_{tag};")
864 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
865 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
866 var tags = count_type_test_tags.to_a
869 v.add("printf(\"{tag}\");")
870 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
871 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
872 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
873 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
877 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
878 v.add_decl("long count_invoke_total;")
879 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
880 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
881 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
882 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
883 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
886 if self.modelbuilder.toolcontext.opt_isset_checks_metrics.value then
887 v.add("printf(\"# dynamic attribute reads: %ld\\n\", count_attr_reads);")
888 v.add("printf(\"# dynamic isset checks: %ld\\n\", count_isset_checks);")
894 for m in mainmodule.in_importation.greaters do
895 var f = "FILE_"+m.c_name
896 v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
897 provide_declaration(f, "extern const char {f}[];")
901 # Copile all C functions related to the [incr|decr]_ref features of the FFI
902 fun compile_nitni_global_ref_functions
904 var v = self.new_visitor
906 struct nitni_global_ref_list_t *nitni_global_ref_list;
907 void initialize_nitni_global_refs() {
908 nitni_global_ref_list = (struct nitni_global_ref_list_t*)nit_alloc(sizeof(struct nitni_global_ref_list_t));
909 nitni_global_ref_list->head = NULL;
910 nitni_global_ref_list->tail = NULL;
913 void nitni_global_ref_add( struct nitni_ref *ref ) {
914 if ( nitni_global_ref_list->head == NULL ) {
915 nitni_global_ref_list->head = ref;
918 nitni_global_ref_list->tail->next = ref;
919 ref->prev = nitni_global_ref_list->tail;
921 nitni_global_ref_list->tail = ref;
926 void nitni_global_ref_remove( struct nitni_ref *ref ) {
927 if ( ref->prev == NULL ) {
928 nitni_global_ref_list->head = ref->next;
930 ref->prev->next = ref->next;
933 if ( ref->next == NULL ) {
934 nitni_global_ref_list->tail = ref->prev;
936 ref->next->prev = ref->prev;
940 extern void nitni_global_ref_incr( struct nitni_ref *ref ) {
941 if ( ref->count == 0 ) /* not registered */
944 nitni_global_ref_add( ref );
950 extern void nitni_global_ref_decr( struct nitni_ref *ref ) {
951 if ( ref->count == 1 ) /* was last reference */
953 /* remove from list */
954 nitni_global_ref_remove( ref );
962 # List of additional files required to compile (FFI)
963 var extern_bodies = new Array[ExternFile]
965 # List of source files to copy over to the compile dir
966 var files_to_copy = new Array[String]
968 # This is used to avoid adding an extern file more than once
969 private var seen_extern = new ArraySet[String]
971 # Generate code that initialize the attributes on a new instance
972 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
974 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
975 self.mainmodule.linearize_mclassdefs(cds)
977 for npropdef in modelbuilder.collect_attr_propdef(cd) do
978 npropdef.init_expr(v, recv)
983 # Generate code that check if an attribute is correctly initialized
984 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
986 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
987 self.mainmodule.linearize_mclassdefs(cds)
989 for npropdef in modelbuilder.collect_attr_propdef(cd) do
990 npropdef.check_expr(v, recv)
997 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
998 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
999 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
1000 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
1002 protected fun init_count_type_test_tags: HashMap[String, Int]
1004 var res = new HashMap[String, Int]
1005 for tag in count_type_test_tags do
1011 # Display stats about compilation process
1015 # * type tests against resolved types (`x
isa Collection[Animal]`)
1016 # * type tests against unresolved types (`x
isa Collection[E
]`)
1017 # * type tests skipped
1018 # * type tests total
1021 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
1022 print "# static count_type_test"
1023 print "\tresolved:\tunresolved\tskipped\ttotal"
1024 var count_type_test_total = init_count_type_test_tags
1025 count_type_test_resolved["total"] = 0
1026 count_type_test_unresolved["total"] = 0
1027 count_type_test_skipped["total"] = 0
1028 count_type_test_total["total"] = 0
1029 for tag in count_type_test_tags do
1030 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
1031 count_type_test_resolved["total"] += count_type_test_resolved[tag]
1032 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
1033 count_type_test_skipped["total"] += count_type_test_skipped[tag]
1034 count_type_test_total["total"] += count_type_test_total[tag]
1036 var count_type_test = count_type_test_total["total"]
1037 var tags = count_type_test_tags.to_a
1041 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
1042 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
1043 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
1044 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
1050 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
1053 # A file unit (may be more than one file if
1054 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
1057 var writers = new Array[CodeWriter]
1058 var required_declarations = new HashSet[String]
1061 # Where to store generated lines
1064 var lines: List[String] = new List[String]
1065 var decl_lines: List[String] = new List[String]
1067 # Add a line in the main part of the generated C
1068 fun add(s: String) do self.lines.add(s)
1071 # (used for local or global declaration)
1072 fun add_decl(s: String) do self.decl_lines.add(s)
1076 file.writers.add(self)
1080 # A visitor on the AST of property definition that generate the C code.
1081 abstract class AbstractCompilerVisitor
1083 type COMPILER: AbstractCompiler
1085 # The associated compiler
1086 var compiler: COMPILER
1088 # The current visited AST node
1089 var current_node: nullable ANode = null is writable
1091 # The current `StaticFrame`
1092 var frame: nullable StaticFrame = null is writable
1094 # Alias for self.compiler.mainmodule.object_type
1095 fun object_type: MClassType do return self.compiler.mainmodule.object_type
1097 # Alias for self.compiler.mainmodule.bool_type
1098 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
1100 var writer: CodeWriter is noinit
1104 self.writer = new CodeWriter(compiler.files.last)
1107 # Force to get the primitive property named `name
` in the instance `recv
` or abort
1108 fun get_property(name: String, recv: MType): MMethod
1110 assert recv isa MClassType
1111 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node, name, recv.mclass, self.compiler.mainmodule)
1114 fun compile_callsite(callsite: CallSite, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1116 var initializers = callsite.mpropdef.initializers
1117 if not initializers.is_empty then
1118 var recv = arguments.first
1121 for p in initializers do
1122 if p isa MMethod then
1124 for x in p.intro.msignature.mparameters do
1125 args.add arguments[i]
1129 else if p isa MAttribute then
1130 self.write_attribute(p, recv, arguments[i])
1134 assert i == arguments.length
1136 return self.send(callsite.mproperty, [recv])
1139 return self.send(callsite.mproperty, arguments)
1142 fun native_array_instance(elttype: MType, length: RuntimeVariable): RuntimeVariable is abstract
1144 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
1146 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
1148 # Return an element of a native array.
1149 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1150 fun native_array_get(native_array: RuntimeVariable, index: Int): RuntimeVariable is abstract
1152 # Store an element in a native array.
1153 # The method is unsafe and is just a direct wrapper for the specific implementation of native arrays
1154 fun native_array_set(native_array: RuntimeVariable, index: Int, value: RuntimeVariable) is abstract
1156 # Evaluate `args
` as expressions in the call of `mpropdef
` on `recv
`.
1157 # This method is used to manage varargs in signatures and returns the real array
1158 # of runtime variables to use in the call.
1159 fun varargize(mpropdef: MMethodDef, map: nullable SignatureMap, recv: RuntimeVariable, args: SequenceRead[AExpr]): Array[RuntimeVariable]
1161 var msignature = mpropdef.new_msignature or else mpropdef.msignature.as(not null)
1162 var res = new Array[RuntimeVariable]
1165 if msignature.arity == 0 then return res
1168 assert args.length == msignature.arity
1170 res.add self.expr(ne, null)
1175 # Eval in order of arguments, not parameters
1176 var exprs = new Array[RuntimeVariable].with_capacity(args.length)
1178 exprs.add self.expr(ne, null)
1181 # Fill `res
` with the result of the evaluation according to the mapping
1182 for i in [0..msignature.arity[ do
1183 var param = msignature.mparameters[i]
1184 var j = map.map.get_or_null(i)
1187 res.add(null_instance)
1190 if param.is_vararg and map.vararg_decl > 0 then
1191 var vararg = exprs.sub(j, map.vararg_decl)
1192 var elttype = param.mtype
1193 var arg = self.vararg_instance(mpropdef, recv, vararg, elttype)
1204 # Anchor a type to the main module and the current receiver
1205 fun anchor(mtype: MType): MType
1207 if not mtype.need_anchor then return mtype
1208 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
1211 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
1213 if not mtype.need_anchor then return mtype
1214 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
1217 # Unsafely cast a value to a new type
1218 # ie the result share the same C variable but my have a different mcasttype
1219 # NOTE: if the adaptation is useless then `value
` is returned as it.
1220 # ENSURE: `result
.name
== value
.name
`
1221 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
1223 mtype = self.anchor(mtype)
1224 var valmtype = value.mcasttype
1225 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1229 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
1230 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
1233 var res = new RuntimeVariable(value.name, valmtype, mtype)
1238 # Generate a super call from a method definition
1239 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1241 # Adapt the arguments of a method according to targetted `MMethodDef`
1242 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1244 # Unbox all the arguments of a method when implemented `extern` or `intern`
1245 fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
1247 # Box or unbox a value to another type iff a C type conversion is needed
1248 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
1249 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1251 # Box extern classes to be used in the generated code
1252 fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1254 # Unbox extern classes to be used in extern code (legacy NI and FFI)
1255 fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
1257 # Generate a polymorphic subtype test
1258 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
1260 # Generate the code required to dynamically check if 2 objects share the same runtime type
1261 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1263 # Generate a Nit "is" for two runtime_variables
1264 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
1268 # Generate a static call on a method definition
1269 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1271 # Generate a polymorphic send for the method `m
` and the arguments `args
`
1272 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1274 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
1275 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1277 assert t isa MClassType
1278 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
1279 return self.call(propdef, t, args)
1282 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
1283 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
1285 assert t isa MClassType
1286 m = m.lookup_next_definition(self.compiler.mainmodule, t)
1287 return self.call(m, t, args)
1290 # Attributes handling
1292 # Generate a polymorphic attribute is_set test
1293 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1295 # Generate a polymorphic attribute read
1296 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
1298 # Generate a polymorphic attribute write
1299 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
1303 # Add a check and an abort for a null receiver if needed
1304 fun check_recv_notnull(recv: RuntimeVariable)
1306 if self.compiler.modelbuilder.toolcontext.opt_no_check_null.value then return
1308 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
1310 self.add("if (unlikely({recv} == NULL)) \{")
1311 self.add_abort("Receiver is null")
1318 private var names = new HashSet[String]
1319 private var last: Int = 0
1321 # Return a new name based on `s
` and unique in the visitor
1322 fun get_name(s: String): String
1324 if not self.names.has(s) then
1328 var i = self.last + 1
1331 if not self.names.has(s2) then
1340 # Return an unique and stable identifier associated with an escapemark
1341 fun escapemark_name(e: nullable EscapeMark): String
1344 if frame.escapemark_names.has_key(e) then return frame.escapemark_names[e]
1346 if name == null then name = "label"
1347 name = get_name(name)
1348 frame.escapemark_names[e] = name
1352 # Insert a C label for associated with an escapemark
1353 fun add_escape_label(e: nullable EscapeMark)
1355 if e == null then return
1356 if e.escapes.is_empty then return
1357 add("BREAK_{escapemark_name(e)}: (void)0;")
1360 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1361 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1362 fun class_name_string(value: RuntimeVariable): String is abstract
1364 # Variables handling
1366 protected var variables = new HashMap[Variable, RuntimeVariable]
1368 # Return the local runtime_variable associated to a Nit local variable
1369 fun variable(variable: Variable): RuntimeVariable
1371 if self.variables.has_key(variable) then
1372 return self.variables[variable]
1374 var name = self.get_name("var_{variable.name}")
1375 var mtype = variable.declared_type.as(not null)
1376 mtype = self.anchor(mtype)
1377 var res = new RuntimeVariable(name, mtype, mtype)
1378 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1379 self.variables[variable] = res
1384 # Return a new uninitialized local runtime_variable
1385 fun new_var(mtype: MType): RuntimeVariable
1387 mtype = self.anchor(mtype)
1388 var name = self.get_name("var")
1389 var res = new RuntimeVariable(name, mtype, mtype)
1390 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1394 # The difference with `new_var
` is the C static type of the local variable
1395 fun new_var_extern(mtype: MType): RuntimeVariable
1397 mtype = self.anchor(mtype)
1398 var name = self.get_name("var")
1399 var res = new RuntimeVariable(name, mtype, mtype)
1400 self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
1404 # Return a new uninitialized named runtime_variable
1405 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1407 mtype = self.anchor(mtype)
1408 var res = new RuntimeVariable(name, mtype, mtype)
1409 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1413 # Correctly assign a left and a right value
1414 # Boxing and unboxing is performed if required
1415 fun assign(left, right: RuntimeVariable)
1417 right = self.autobox(right, left.mtype)
1418 self.add("{left} = {right};")
1421 # Generate instances
1423 # Generate a alloc-instance + init-attributes
1424 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1426 # Allocate and init attributes of an instance of a standard or extern class
1428 # Does not support universals and the pseudo-internal `NativeArray` class.
1429 fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
1432 var ctype = mtype.ctype
1433 assert mtype.mclass.name != "NativeArray"
1434 if not mtype.is_c_primitive then
1435 recv = init_instance(mtype)
1436 else if ctype == "char*" then
1437 recv = new_expr("NULL/*special!*/", mtype)
1439 recv = new_expr("({ctype})0/*special!*/", mtype)
1444 # Set a GC finalizer on `recv
`, only if `recv
` isa Finalizable
1445 fun set_finalizer(recv: RuntimeVariable)
1447 var mtype = recv.mtype
1448 var finalizable_type = compiler.mainmodule.finalizable_type
1449 if finalizable_type != null and not mtype.need_anchor and
1450 mtype.is_subtype(compiler.mainmodule, null, finalizable_type) then
1451 add "gc_register_finalizer({recv});"
1455 # The currently processed module
1457 # alias for `compiler
.mainmodule
`
1458 fun mmodule: MModule do return compiler.mainmodule
1460 # Generate an integer value
1461 fun int_instance(value: Int): RuntimeVariable
1463 var t = mmodule.int_type
1464 var res = new RuntimeVariable("{value.to_s}l", t, t)
1468 # Generate a char value
1469 fun char_instance(value: Char): RuntimeVariable
1471 var t = mmodule.char_type
1472 var res = new RuntimeVariable("'{value.to_s.escape_to_c}'", t, t)
1476 # Generate a float value
1478 # FIXME pass a Float, not a string
1479 fun float_instance(value: String): RuntimeVariable
1481 var t = mmodule.float_type
1482 var res = new RuntimeVariable("{value}", t, t)
1486 # Generate an integer value
1487 fun bool_instance(value: Bool): RuntimeVariable
1489 var s = if value then "1" else "0"
1490 var res = new RuntimeVariable(s, bool_type, bool_type)
1494 # Generate the `null` value
1495 fun null_instance: RuntimeVariable
1497 var t = compiler.mainmodule.model.null_type
1498 var res = new RuntimeVariable("((val*)NULL)", t, t)
1502 # Generate a string value
1503 fun string_instance(string: String): RuntimeVariable
1505 var mtype = mmodule.string_type
1506 var name = self.get_name("varonce")
1507 self.add_decl("static {mtype.ctype} {name};")
1508 var res = self.new_var(mtype)
1509 self.add("if (likely({name}!=NULL)) \{")
1510 self.add("{res} = {name};")
1511 self.add("\} else \{")
1512 var native_mtype = mmodule.native_string_type
1513 var nat = self.new_var(native_mtype)
1514 self.add("{nat} = \"{string.escape_to_c}\";")
1515 var length = self.int_instance(string.length)
1516 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1517 self.add("{name} = {res};")
1522 fun value_instance(object: Object): RuntimeVariable
1524 if object isa Int then
1525 return int_instance(object)
1526 else if object isa Bool then
1527 return bool_instance(object)
1528 else if object isa String then
1529 return string_instance(object)
1535 # Generate an array value
1536 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1538 # Get an instance of a array for a vararg
1539 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1543 # Add a line in the main part of the generated C
1544 fun add(s: String) do self.writer.lines.add(s)
1547 # (used for local or global declaration)
1548 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1550 # Request the presence of a global declaration
1551 fun require_declaration(key: String)
1553 var reqs = self.writer.file.required_declarations
1554 if reqs.has(key) then return
1556 var node = current_node
1557 if node != null then compiler.requirers_of_declarations[key] = node
1560 # Add a declaration in the local-header
1561 # The declaration is ensured to be present once
1562 fun declare_once(s: String)
1564 self.compiler.provide_declaration(s, s)
1565 self.require_declaration(s)
1568 # Look for a needed .h and .c file for a given module
1569 # This is used for the legacy FFI
1570 fun add_extern(mmodule: MModule)
1572 var file = mmodule.location.file.filename
1573 file = file.strip_extension(".nit")
1574 var tryfile = file + ".nit.h"
1575 if tryfile.file_exists then
1576 self.declare_once("#include \"{tryfile.basename("")}\"")
1577 self.compiler.files_to_copy.add(tryfile)
1579 tryfile = file + "_nit.h"
1580 if tryfile.file_exists then
1581 self.declare_once("#include \"{tryfile.basename("")}\"")
1582 self.compiler.files_to_copy.add(tryfile)
1585 if self.compiler.seen_extern.has(file) then return
1586 self.compiler.seen_extern.add(file)
1587 tryfile = file + ".nit.c"
1588 if not tryfile.file_exists then
1589 tryfile = file + "_nit.c"
1590 if not tryfile.file_exists then return
1592 var f = new ExternCFile(tryfile.basename(""), "")
1593 self.compiler.extern_bodies.add(f)
1594 self.compiler.files_to_copy.add(tryfile)
1597 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1598 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1600 var res = new_var(mtype)
1601 self.add("{res} = {cexpr};")
1605 # Generate generic abort
1606 # used by aborts, asserts, casts, etc.
1607 fun add_abort(message: String)
1609 self.add("PRINT_ERROR(\"Runtime error: %s\", \"{message.escape_to_c}\");")
1615 if self.current_node != null and self.current_node.location.file != null and
1616 self.current_node.location.file.mmodule != null then
1617 var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
1618 self.require_declaration(f)
1619 self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
1621 self.add("PRINT_ERROR(\"\\n\");")
1623 self.add("fatal_exit(1);")
1626 # Add a dynamic cast
1627 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1629 var res = self.type_test(value, mtype, tag)
1630 self.add("if (unlikely(!{res})) \{")
1631 var cn = self.class_name_string(value)
1632 self.add("PRINT_ERROR(\"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1637 # Generate a return with the value `s
`
1638 fun ret(s: RuntimeVariable)
1640 self.assign(self.frame.returnvar.as(not null), s)
1641 self.add("goto {self.frame.returnlabel.as(not null)};")
1644 # Compile a statement (if any)
1645 fun stmt(nexpr: nullable AExpr)
1647 if nexpr == null then return
1648 if nexpr.mtype == null and not nexpr.is_typed then
1649 # Untyped expression.
1650 # Might mean dead code
1655 var narray = nexpr.comprehension
1656 if narray != null then
1657 var recv = frame.comprehension.as(not null)
1658 var val = expr(nexpr, narray.element_mtype)
1659 compile_callsite(narray.push_callsite.as(not null), [recv, val])
1663 var old = self.current_node
1664 self.current_node = nexpr
1666 self.current_node = old
1669 # Compile an expression an return its result
1670 # `mtype
` is the expected return type, pass null if no specific type is expected.
1671 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1673 if nexpr.mtype == null then
1674 # Untyped expression.
1675 # Might mean dead code
1676 # so return a placebo result
1677 if mtype == null then mtype = compiler.mainmodule.object_type
1678 return new_var(mtype)
1680 var old = self.current_node
1681 self.current_node = nexpr
1682 var res = nexpr.expr(self).as(not null)
1683 if mtype != null then
1684 mtype = self.anchor(mtype)
1685 res = self.autobox(res, mtype)
1687 res = autoadapt(res, nexpr.mtype.as(not null))
1688 var implicit_cast_to = nexpr.implicit_cast_to
1689 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1690 add_cast(res, implicit_cast_to, "auto")
1691 res = autoadapt(res, implicit_cast_to)
1693 self.current_node = old
1697 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1698 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1700 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1701 fun debug(message: String)
1703 var node = self.current_node
1704 if node == null then
1705 print "?: {message}"
1709 self.add("/* DEBUG: {message} */")
1713 # A C function associated to a Nit method
1714 # Because of customization, a given Nit method can be compiler more that once
1715 abstract class AbstractRuntimeFunction
1717 type COMPILER: AbstractCompiler
1718 type VISITOR: AbstractCompilerVisitor
1720 # The associated Nit method
1721 var mmethoddef: MMethodDef
1723 # The mangled c name of the runtime_function
1724 # Subclasses should redefine `build_c_name
` instead
1727 var res = self.c_name_cache
1728 if res != null then return res
1729 res = self.build_c_name
1730 self.c_name_cache = res
1734 # Non cached version of `c_name
`
1735 protected fun build_c_name: String is abstract
1737 protected var c_name_cache: nullable String = null is writable
1739 # Implements a call of the runtime_function
1740 # May inline the body or generate a C function call
1741 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1743 # Generate the code for the `AbstractRuntimeFunction`
1744 # Warning: compile more than once compilation makes CC unhappy
1745 fun compile_to_c(compiler: COMPILER) is abstract
1748 # A runtime variable hold a runtime value in C.
1749 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1751 # 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.
1752 class RuntimeVariable
1753 # The name of the variable in the C code
1756 # The static type of the variable (as declard in C)
1759 # The current casted type of the variable (as known in Nit)
1760 var mcasttype: MType is writable
1762 # If the variable exaclty a mcasttype?
1763 # false (usual value) means that the variable is a mcasttype or a subtype.
1764 var is_exact: Bool = false is writable
1768 assert not mtype.need_anchor
1769 assert not mcasttype.need_anchor
1772 redef fun to_s do return name
1777 if self.is_exact then
1778 exact_str = " exact"
1783 if self.mtype == self.mcasttype then
1784 type_str = "{mtype}{exact_str}"
1786 type_str = "{mtype}({mcasttype}{exact_str})"
1788 return "<{name}:{type_str}>"
1792 # The static context of a visited property in a `AbstractCompilerVisitor`
1795 type VISITOR: AbstractCompilerVisitor
1797 # The associated visitor
1798 var visitor: VISITOR
1800 # The executed property.
1801 # A Method in case of a call, an attribute in case of a default initialization.
1802 var mpropdef: MPropDef
1804 # The static type of the receiver
1805 var receiver: MClassType
1807 # Arguments of the method (the first is the receiver)
1808 var arguments: Array[RuntimeVariable]
1810 # The runtime_variable associated to the return (in a function)
1811 var returnvar: nullable RuntimeVariable = null is writable
1813 # The label at the end of the property
1814 var returnlabel: nullable String = null is writable
1816 # Labels associated to a each escapemarks.
1817 # Because of inlinings, escape-marks must be associated to their context (the frame)
1818 private var escapemark_names = new HashMap[EscapeMark, String]
1820 # The array comprehension currently filled, if any
1821 private var comprehension: nullable RuntimeVariable = null
1825 # Return the C type associated to a given Nit static type
1826 fun ctype: String do return "val*"
1828 # C type outside of the compiler code and in boxes
1829 fun ctype_extern: String do return "val*"
1831 # Short name of the `ctype
` to use in unions
1832 fun ctypename: String do return "val"
1834 # Is the associated C type a primitive one?
1836 # ENSURE `result
== (ctype
!= "val*")`
1837 fun is_c_primitive: Bool do return false
1840 redef class MClassType
1842 redef var ctype is lazy do
1843 if mclass.name == "Int" then
1845 else if mclass.name == "Bool" then
1847 else if mclass.name == "Char" then
1849 else if mclass.name == "Float" then
1851 else if mclass.name == "NativeString" then
1853 else if mclass.name == "NativeArray" then
1860 redef var is_c_primitive is lazy do return ctype != "val*"
1862 redef fun ctype_extern: String
1864 if mclass.kind == extern_kind then
1871 redef fun ctypename: String
1873 if mclass.name == "Int" then
1875 else if mclass.name == "Bool" then
1877 else if mclass.name == "Char" then
1879 else if mclass.name == "Float" then
1881 else if mclass.name == "NativeString" then
1883 else if mclass.name == "NativeArray" then
1884 #return "{self.arguments.first.ctype}*"
1892 redef class MPropDef
1893 type VISITOR: AbstractCompilerVisitor
1896 redef class MMethodDef
1897 # Can the body be inlined?
1898 fun can_inline(v: VISITOR): Bool
1900 if is_abstract then return true
1901 var modelbuilder = v.compiler.modelbuilder
1902 var node = modelbuilder.mpropdef2node(self)
1903 if node isa APropdef then
1904 return node.can_inline
1905 else if node isa AClassdef then
1906 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1913 # Inline the body in another visitor
1914 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1916 var modelbuilder = v.compiler.modelbuilder
1917 var val = constant_value
1918 var node = modelbuilder.mpropdef2node(self)
1921 var cn = v.class_name_string(arguments.first)
1922 v.current_node = node
1923 v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mproperty.name.escape_to_c}\", {cn});")
1928 if node isa APropdef then
1929 var oldnode = v.current_node
1930 v.current_node = node
1931 self.compile_parameter_check(v, arguments)
1932 node.compile_to_c(v, self, arguments)
1933 v.current_node = oldnode
1934 else if node isa AClassdef then
1935 var oldnode = v.current_node
1936 v.current_node = node
1937 self.compile_parameter_check(v, arguments)
1938 node.compile_to_c(v, self, arguments)
1939 v.current_node = oldnode
1940 else if val != null then
1941 v.ret(v.value_instance(val))
1948 # Generate type checks in the C code to check covariant parameters
1949 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1951 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1953 for i in [0..msignature.arity[ do
1954 # skip test for vararg since the array is instantiated with the correct polymorphic type
1955 if msignature.vararg_rank == i then continue
1957 # skip if the cast is not required
1958 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1959 if not origmtype.need_anchor then continue
1961 # get the parameter type
1962 var mtype = self.msignature.mparameters[i].mtype
1965 # note that v decides if and how to implements the cast
1966 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1967 v.add_cast(arguments[i+1], mtype, "covariance")
1974 redef class APropdef
1975 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1977 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1978 debug("Not yet implemented")
1981 fun can_inline: Bool do return true
1984 redef class AMethPropdef
1985 redef fun compile_to_c(v, mpropdef, arguments)
1987 # Call the implicit super-init
1988 var auto_super_inits = self.auto_super_inits
1989 if auto_super_inits != null then
1990 var args = [arguments.first]
1991 for auto_super_init in auto_super_inits do
1992 assert auto_super_init.mproperty != mpropdef.mproperty
1994 for i in [0..auto_super_init.msignature.arity+1[ do
1995 args.add(arguments[i])
1997 assert auto_super_init.mproperty != mpropdef.mproperty
1998 v.compile_callsite(auto_super_init, args)
2001 if auto_super_call then
2002 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2005 # Try special compilation
2006 if mpropdef.is_intern then
2007 if compile_intern_to_c(v, mpropdef, arguments) then return
2008 else if mpropdef.is_extern then
2009 if mpropdef.mproperty.is_init then
2010 if compile_externinit_to_c(v, mpropdef, arguments) then return
2012 if compile_externmeth_to_c(v, mpropdef, arguments) then return
2016 # Compile block if any
2017 var n_block = n_block
2018 if n_block != null then
2019 for i in [0..mpropdef.msignature.arity[ do
2020 var variable = self.n_signature.n_params[i].variable.as(not null)
2021 v.assign(v.variable(variable), arguments[i+1])
2028 var cn = v.class_name_string(arguments.first)
2029 v.add("PRINT_ERROR(\"Runtime error: uncompiled method `%s
` called on `%s
`. NOT YET IMPLEMENTED\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
2033 redef fun can_inline
2035 if self.auto_super_inits != null then return false
2036 var nblock = self.n_block
2037 if nblock == null then return true
2038 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
2039 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
2043 fun compile_intern_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2045 var pname = mpropdef.mproperty.name
2046 var cname = mpropdef.mclassdef.mclass.name
2047 var ret = mpropdef.msignature.return_mtype
2049 ret = v.resolve_for(ret, arguments.first)
2051 if pname != "==" and pname != "!=" then
2052 v.adapt_signature(mpropdef, arguments)
2053 v.unbox_signature_extern(mpropdef, arguments)
2055 if cname == "Int" then
2056 if pname == "output" then
2057 v.add("printf(\"%ld\\n\", {arguments.first});")
2059 else if pname == "object_id" then
2060 v.ret(arguments.first)
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 == "unary -" then
2069 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2071 else if pname == "unary +" then
2074 else if pname == "*" then
2075 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2077 else if pname == "/" then
2078 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2080 else if pname == "%" then
2081 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
2083 else if pname == "lshift" then
2084 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
2086 else if pname == "rshift" then
2087 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
2089 else if pname == "==" then
2090 v.ret(v.equal_test(arguments[0], arguments[1]))
2092 else if pname == "!=" then
2093 var res = v.equal_test(arguments[0], arguments[1])
2094 v.ret(v.new_expr("!{res}", ret.as(not null)))
2096 else if pname == "<" then
2097 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2099 else if pname == ">" then
2100 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2102 else if pname == "<=" then
2103 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2105 else if pname == ">=" then
2106 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2108 else if pname == "to_f" then
2109 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
2111 else if pname == "ascii" then
2112 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
2115 else if cname == "Char" then
2116 if pname == "output" then
2117 v.add("printf(\"%c\", {arguments.first});")
2119 else if pname == "object_id" then
2120 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2122 else if pname == "successor" then
2123 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2125 else if pname == "predecessor" then
2126 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2128 else if pname == "==" then
2129 v.ret(v.equal_test(arguments[0], arguments[1]))
2131 else if pname == "!=" then
2132 var res = v.equal_test(arguments[0], arguments[1])
2133 v.ret(v.new_expr("!{res}", ret.as(not null)))
2135 else if pname == "<" then
2136 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2138 else if pname == ">" then
2139 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2141 else if pname == "<=" then
2142 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2144 else if pname == ">=" then
2145 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2147 else if pname == "to_i" then
2148 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
2150 else if pname == "ascii" then
2151 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
2154 else if cname == "Bool" then
2155 if pname == "output" then
2156 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
2158 else if pname == "object_id" then
2159 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2161 else if pname == "==" then
2162 v.ret(v.equal_test(arguments[0], arguments[1]))
2164 else if pname == "!=" then
2165 var res = v.equal_test(arguments[0], arguments[1])
2166 v.ret(v.new_expr("!{res}", ret.as(not null)))
2169 else if cname == "Float" then
2170 if pname == "output" then
2171 v.add("printf(\"%f\\n\", {arguments.first});")
2173 else if pname == "object_id" then
2174 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
2176 else if pname == "+" then
2177 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2179 else if pname == "-" then
2180 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
2182 else if pname == "unary -" then
2183 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
2185 else if pname == "unary +" then
2188 else if pname == "succ" then
2189 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
2191 else if pname == "prec" then
2192 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
2194 else if pname == "*" then
2195 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
2197 else if pname == "/" then
2198 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
2200 else if pname == "==" then
2201 v.ret(v.equal_test(arguments[0], arguments[1]))
2203 else if pname == "!=" then
2204 var res = v.equal_test(arguments[0], arguments[1])
2205 v.ret(v.new_expr("!{res}", ret.as(not null)))
2207 else if pname == "<" then
2208 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
2210 else if pname == ">" then
2211 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
2213 else if pname == "<=" then
2214 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
2216 else if pname == ">=" then
2217 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
2219 else if pname == "to_i" then
2220 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
2223 else if cname == "NativeString" then
2224 if pname == "[]" then
2225 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
2227 else if pname == "[]=" then
2228 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
2230 else if pname == "copy_to" then
2231 v.add("memmove({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
2233 else if pname == "atoi" then
2234 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
2236 else if pname == "fast_cstring" then
2237 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
2239 else if pname == "new" then
2240 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2243 else if cname == "NativeArray" then
2244 v.native_array_def(pname, ret, arguments)
2247 if pname == "exit" then
2248 v.add("exit({arguments[1]});")
2250 else if pname == "sys" then
2251 v.ret(v.new_expr("glob_sys", ret.as(not null)))
2253 else if pname == "calloc_string" then
2254 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
2256 else if pname == "calloc_array" then
2257 v.calloc_array(ret.as(not null), arguments)
2259 else if pname == "object_id" then
2260 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
2262 else if pname == "is_same_type" then
2263 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
2265 else if pname == "is_same_instance" then
2266 v.ret(v.equal_test(arguments[0], arguments[1]))
2268 else if pname == "output_class_name" then
2269 var nat = v.class_name_string(arguments.first)
2270 v.add("printf(\"%s\\n\", {nat});")
2272 else if pname == "native_class_name" then
2273 var nat = v.class_name_string(arguments.first)
2274 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
2276 else if pname == "force_garbage_collection" then
2277 v.add("nit_gcollect();")
2279 else if pname == "native_argc" then
2280 v.ret(v.new_expr("glob_argc", ret.as(not null)))
2282 else if pname == "native_argv" then
2283 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
2289 # Compile an extern method
2290 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2291 fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2294 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2295 if at != null and at.n_args.length == 1 then
2296 externname = at.arg_as_string(v.compiler.modelbuilder)
2297 if externname == null then return false
2301 v.add_extern(mpropdef.mclassdef.mmodule)
2302 var res: nullable RuntimeVariable = null
2303 var ret = mpropdef.msignature.return_mtype
2305 ret = v.resolve_for(ret, arguments.first)
2306 res = v.new_var_extern(ret)
2308 v.adapt_signature(mpropdef, arguments)
2309 v.unbox_signature_extern(mpropdef, arguments)
2312 v.add("{externname}({arguments.join(", ")});")
2314 v.add("{res} = {externname}({arguments.join(", ")});")
2315 res = v.box_extern(res, ret.as(not null))
2321 # Compile an extern factory
2322 # Return `true` if the compilation was successful, `false` if a fall-back is needed
2323 fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
2326 var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
2328 externname = at.arg_as_string(v.compiler.modelbuilder)
2329 if externname == null then return false
2333 v.add_extern(mpropdef.mclassdef.mmodule)
2334 v.adapt_signature(mpropdef, arguments)
2335 v.unbox_signature_extern(mpropdef, arguments)
2336 var ret = arguments.first.mtype
2337 var res = v.new_var_extern(ret)
2341 v.add("{res} = {externname}({arguments.join(", ")});")
2342 res = v.box_extern(res, ret)
2348 redef class AAttrPropdef
2349 redef fun can_inline: Bool do return not is_lazy
2351 redef fun compile_to_c(v, mpropdef, arguments)
2353 if mpropdef == mreadpropdef then
2354 assert arguments.length == 1
2355 var recv = arguments.first
2359 var ret = self.mpropdef.static_mtype
2360 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2361 var guard = self.mlazypropdef.mproperty
2363 set = v.isset_attribute(self.mpropdef.mproperty, recv)
2365 set = v.read_attribute(guard, recv)
2367 v.add("if(likely({set})) \{")
2368 res = v.read_attribute(self.mpropdef.mproperty, recv)
2371 var value = evaluate_expr(v, recv)
2373 v.assign(res, value)
2375 var true_v = v.bool_instance(true)
2376 v.write_attribute(guard, arguments.first, true_v)
2380 res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
2382 v.assign(v.frame.returnvar.as(not null), res)
2383 else if mpropdef == mwritepropdef then
2384 assert arguments.length == 2
2385 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
2387 var ret = self.mpropdef.static_mtype
2388 var useiset = not ret.is_c_primitive and not ret isa MNullableType
2390 v.write_attribute(self.mlazypropdef.mproperty, arguments.first, v.bool_instance(true))
2398 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2400 if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
2403 # Evaluate, store and return the default value of the attribute
2404 private fun evaluate_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable): RuntimeVariable
2406 var oldnode = v.current_node
2407 v.current_node = self
2408 var old_frame = v.frame
2409 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mcasttype.undecorate.as(MClassType), [recv])
2413 var mtype = self.mpropdef.static_mtype
2414 assert mtype != null
2416 var nexpr = self.n_expr
2417 var nblock = self.n_block
2418 if nexpr != null then
2419 value = v.expr(nexpr, mtype)
2420 else if nblock != null then
2421 value = v.new_var(mtype)
2422 frame.returnvar = value
2423 frame.returnlabel = v.get_name("RET_LABEL")
2426 v.add("{frame.returnlabel.as(not null)}:(void)0;")
2432 v.write_attribute(self.mpropdef.mproperty, recv, value)
2435 v.current_node = oldnode
2440 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
2442 var nexpr = self.n_expr
2443 if nexpr != null then return
2445 var oldnode = v.current_node
2446 v.current_node = self
2447 var old_frame = v.frame
2448 var frame = new StaticFrame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
2450 # Force read to check the initialization
2451 v.read_attribute(self.mpropdef.mproperty, recv)
2453 v.current_node = oldnode
2457 redef class AClassdef
2458 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
2460 if mpropdef == self.mfree_init then
2461 assert mpropdef.mproperty.is_root_init
2462 assert arguments.length == 1
2463 if not mpropdef.is_intro then
2464 v.supercall(mpropdef, arguments.first.mtype.as(MClassType), arguments)
2474 # Try to compile self as an expression
2475 # Do not call this method directly, use `v
.expr
` instead
2476 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
2478 v.add("PRINT_ERROR(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
2479 var mtype = self.mtype
2480 if mtype == null then
2483 var res = v.new_var(mtype)
2484 v.add("/* {res} = NOT YET {class_name} */")
2489 # Try to compile self as a statement
2490 # Do not call this method directly, use `v
.stmt
` instead
2491 private fun stmt(v: AbstractCompilerVisitor)
2497 redef class ABlockExpr
2500 for e in self.n_expr do v.stmt(e)
2504 var last = self.n_expr.last
2505 for e in self.n_expr do
2506 if e == last then break
2509 return v.expr(last, null)
2513 redef class AVardeclExpr
2516 var variable = self.variable.as(not null)
2517 var ne = self.n_expr
2519 var i = v.expr(ne, variable.declared_type)
2520 v.assign(v.variable(variable), i)
2525 redef class AVarExpr
2528 var res = v.variable(self.variable.as(not null))
2529 var mtype = self.mtype.as(not null)
2530 return v.autoadapt(res, mtype)
2534 redef class AVarAssignExpr
2537 var variable = self.variable.as(not null)
2538 var i = v.expr(self.n_value, variable.declared_type)
2539 v.assign(v.variable(variable), i)
2544 redef class AVarReassignExpr
2547 var variable = self.variable.as(not null)
2548 var vari = v.variable(variable)
2549 var value = v.expr(self.n_value, variable.declared_type)
2550 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2552 v.assign(v.variable(variable), res)
2556 redef class ASelfExpr
2557 redef fun expr(v) do return v.frame.arguments.first
2560 redef class AImplicitSelfExpr
2561 redef fun expr(v) do
2562 if not is_sys then return super
2563 return v.new_expr("glob_sys", mtype.as(not null))
2567 redef class AEscapeExpr
2568 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2571 redef class AReturnExpr
2574 var nexpr = self.n_expr
2575 if nexpr != null then
2576 var returnvar = v.frame.returnvar.as(not null)
2577 var i = v.expr(nexpr, returnvar.mtype)
2578 v.assign(returnvar, i)
2580 v.add("goto {v.frame.returnlabel.as(not null)};")
2584 redef class AAbortExpr
2585 redef fun stmt(v) do v.add_abort("Aborted")
2591 var cond = v.expr_bool(self.n_expr)
2592 v.add("if ({cond})\{")
2601 var res = v.new_var(self.mtype.as(not null))
2602 var cond = v.expr_bool(self.n_expr)
2603 v.add("if ({cond})\{")
2604 v.assign(res, v.expr(self.n_then.as(not null), null))
2606 v.assign(res, v.expr(self.n_else.as(not null), null))
2612 redef class AIfexprExpr
2615 var res = v.new_var(self.mtype.as(not null))
2616 var cond = v.expr_bool(self.n_expr)
2617 v.add("if ({cond})\{")
2618 v.assign(res, v.expr(self.n_then, null))
2620 v.assign(res, v.expr(self.n_else, null))
2629 v.stmt(self.n_block)
2630 v.add_escape_label(break_mark)
2634 redef class AWhileExpr
2638 var cond = v.expr_bool(self.n_expr)
2639 v.add("if (!{cond}) break;")
2640 v.stmt(self.n_block)
2641 v.add_escape_label(continue_mark)
2643 v.add_escape_label(break_mark)
2647 redef class ALoopExpr
2651 v.stmt(self.n_block)
2652 v.add_escape_label(continue_mark)
2654 v.add_escape_label(break_mark)
2658 redef class AForExpr
2661 var cl = v.expr(self.n_expr, null)
2662 var it_meth = self.method_iterator
2663 assert it_meth != null
2664 var it = v.compile_callsite(it_meth, [cl])
2667 var isok_meth = self.method_is_ok
2668 assert isok_meth != null
2669 var ok = v.compile_callsite(isok_meth, [it])
2671 v.add("if(!{ok}) break;")
2672 if self.variables.length == 1 then
2673 var item_meth = self.method_item
2674 assert item_meth != null
2675 var i = v.compile_callsite(item_meth, [it])
2677 v.assign(v.variable(variables.first), i)
2678 else if self.variables.length == 2 then
2679 var key_meth = self.method_key
2680 assert key_meth != null
2681 var i = v.compile_callsite(key_meth, [it])
2683 v.assign(v.variable(variables[0]), i)
2684 var item_meth = self.method_item
2685 assert item_meth != null
2686 i = v.compile_callsite(item_meth, [it])
2688 v.assign(v.variable(variables[1]), i)
2692 v.stmt(self.n_block)
2693 v.add_escape_label(continue_mark)
2694 var next_meth = self.method_next
2695 assert next_meth != null
2696 v.compile_callsite(next_meth, [it])
2698 v.add_escape_label(break_mark)
2700 var method_finish = self.method_finish
2701 if method_finish != null then
2702 # TODO: Find a way to call this also in long escape (e.g. return)
2703 v.compile_callsite(method_finish, [it])
2708 redef class AAssertExpr
2711 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2713 var cond = v.expr_bool(self.n_expr)
2714 v.add("if (unlikely(!{cond})) \{")
2718 v.add_abort("Assert '{nid.text}' failed")
2720 v.add_abort("Assert failed")
2729 var res = v.new_var(self.mtype.as(not null))
2730 var i1 = v.expr_bool(self.n_expr)
2731 v.add("if ({i1}) \{")
2734 var i2 = v.expr_bool(self.n_expr2)
2735 v.add("{res} = {i2};")
2741 redef class AImpliesExpr
2744 var res = v.new_var(self.mtype.as(not null))
2745 var i1 = v.expr_bool(self.n_expr)
2746 v.add("if (!{i1}) \{")
2749 var i2 = v.expr_bool(self.n_expr2)
2750 v.add("{res} = {i2};")
2756 redef class AAndExpr
2759 var res = v.new_var(self.mtype.as(not null))
2760 var i1 = v.expr_bool(self.n_expr)
2761 v.add("if (!{i1}) \{")
2764 var i2 = v.expr_bool(self.n_expr2)
2765 v.add("{res} = {i2};")
2771 redef class ANotExpr
2774 var cond = v.expr_bool(self.n_expr)
2775 return v.new_expr("!{cond}", self.mtype.as(not null))
2779 redef class AOrElseExpr
2782 var res = v.new_var(self.mtype.as(not null))
2783 var i1 = v.expr(self.n_expr, null)
2784 v.add("if ({i1}!=NULL) \{")
2787 var i2 = v.expr(self.n_expr2, null)
2794 redef class AIntExpr
2795 redef fun expr(v) do return v.int_instance(self.value.as(not null))
2798 redef class AFloatExpr
2799 redef fun expr(v) do return v.float_instance("{self.n_float.text}") # FIXME use value, not n_float
2802 redef class ACharExpr
2803 redef fun expr(v) do return v.char_instance(self.value.as(not null))
2806 redef class AArrayExpr
2809 var mtype = self.element_mtype.as(not null)
2810 var array = new Array[RuntimeVariable]
2811 var res = v.array_instance(array, mtype)
2813 var old_comprehension = v.frame.comprehension
2814 v.frame.comprehension = res
2815 for nexpr in self.n_exprs do
2818 v.frame.comprehension = old_comprehension
2824 redef class AStringFormExpr
2825 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2828 redef class ASuperstringExpr
2831 var type_string = mtype.as(not null)
2833 # Collect elements of the superstring
2834 var array = new Array[AExpr]
2835 for ne in self.n_exprs do
2836 # Drop literal empty string.
2837 # They appears in things like "{a}" that is ["", a, ""]
2838 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2842 # Store the allocated native array in a static variable
2844 var varonce = v.get_name("varonce")
2845 v.add("if (unlikely({varonce}==NULL)) \{")
2847 # The native array that will contains the elements to_s-ized.
2848 # For fast concatenation.
2849 var a = v.native_array_instance(type_string, v.int_instance(array.length))
2851 v.add_decl("static {a.mtype.ctype} {varonce};")
2853 # Pre-fill the array with the literal string parts.
2854 # So they do not need to be filled again when reused
2855 for i in [0..array.length[ do
2857 if not ne isa AStringFormExpr then continue
2858 var e = v.expr(ne, null)
2859 v.native_array_set(a, i, e)
2863 # Take the native-array from the store.
2864 # The point is to prevent that some recursive execution use (and corrupt) the same native array
2865 # WARNING: not thread safe! (FIXME?)
2866 v.add("{a} = {varonce};")
2867 v.add("{varonce} = NULL;")
2870 # Stringify the elements and put them in the native array
2871 var to_s_method = v.get_property("to_s", v.object_type)
2872 for i in [0..array.length[ do
2874 if ne isa AStringFormExpr then continue
2875 var e = v.expr(ne, null)
2876 # Skip the `to_s
` if the element is already a String
2877 if not e.mcasttype.is_subtype(v.compiler.mainmodule, null, type_string) then
2878 e = v.send(to_s_method, [e]).as(not null)
2880 v.native_array_set(a, i, e)
2883 # Fast join the native string to get the result
2884 var res = v.send(v.get_property("native_to_s", a.mtype), [a])
2886 # We finish to work with the native array,
2887 # so store it so that it can be reused
2888 v.add("{varonce} = {a};")
2893 redef class ACrangeExpr
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 AOrangeExpr
2908 var i1 = v.expr(self.n_expr, null)
2909 var i2 = v.expr(self.n_expr2, null)
2910 var mtype = self.mtype.as(MClassType)
2911 var res = v.init_instance(mtype)
2912 v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2917 redef class ATrueExpr
2918 redef fun expr(v) do return v.bool_instance(true)
2921 redef class AFalseExpr
2922 redef fun expr(v) do return v.bool_instance(false)
2925 redef class ANullExpr
2926 redef fun expr(v) do return v.null_instance
2929 redef class AIsaExpr
2932 var i = v.expr(self.n_expr, null)
2933 return v.type_test(i, self.cast_type.as(not null), "isa")
2937 redef class AAsCastExpr
2940 var i = v.expr(self.n_expr, null)
2941 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2943 v.add_cast(i, self.mtype.as(not null), "as")
2948 redef class AAsNotnullExpr
2951 var i = v.expr(self.n_expr, null)
2952 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2954 if i.mtype.is_c_primitive then return i
2956 v.add("if (unlikely({i} == NULL)) \{")
2957 v.add_abort("Cast failed")
2963 redef class AParExpr
2964 redef fun expr(v) do return v.expr(self.n_expr, null)
2967 redef class AOnceExpr
2970 var mtype = self.mtype.as(not null)
2971 var name = v.get_name("varonce")
2972 var guard = v.get_name(name + "_guard")
2973 v.add_decl("static {mtype.ctype} {name};")
2974 v.add_decl("static int {guard};")
2975 var res = v.new_var(mtype)
2976 v.add("if (likely({guard})) \{")
2977 v.add("{res} = {name};")
2979 var i = v.expr(self.n_expr, mtype)
2980 v.add("{res} = {i};")
2981 v.add("{name} = {res};")
2982 v.add("{guard} = 1;")
2988 redef class ASendExpr
2991 var recv = v.expr(self.n_expr, null)
2992 var callsite = self.callsite.as(not null)
2993 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.raw_arguments)
2994 return v.compile_callsite(callsite, args)
2998 redef class ASendReassignFormExpr
3001 var recv = v.expr(self.n_expr, null)
3002 var callsite = self.callsite.as(not null)
3003 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.raw_arguments)
3005 var value = v.expr(self.n_value, null)
3007 var left = v.compile_callsite(callsite, args)
3010 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
3014 v.compile_callsite(self.write_callsite.as(not null), args)
3018 redef class ASuperExpr
3021 var recv = v.frame.arguments.first
3023 var callsite = self.callsite
3024 if callsite != null then
3027 if self.n_args.n_exprs.is_empty then
3028 # Add automatic arguments for the super init call
3030 for i in [0..callsite.msignature.arity[ do
3031 args.add(v.frame.arguments[i+1])
3034 args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.n_args.n_exprs)
3038 var res = v.compile_callsite(callsite, args)
3042 var mpropdef = self.mpropdef.as(not null)
3045 if self.n_args.n_exprs.is_empty then
3046 args = v.frame.arguments
3048 args = v.varargize(mpropdef, signaturemap, recv, self.n_args.n_exprs)
3051 # Standard call-next-method
3052 return v.supercall(mpropdef, recv.mtype.as(MClassType), args)
3056 redef class ANewExpr
3059 var mtype = self.recvtype
3060 assert mtype != null
3062 if mtype.mclass.name == "NativeArray" then
3063 assert self.n_args.n_exprs.length == 1
3064 var l = v.expr(self.n_args.n_exprs.first, null)
3065 assert mtype isa MGenericType
3066 var elttype = mtype.arguments.first
3067 return v.native_array_instance(elttype, l)
3070 var recv = v.init_instance_or_extern(mtype)
3072 var callsite = self.callsite
3073 if callsite == null then return recv
3075 var args = v.varargize(callsite.mpropdef, callsite.signaturemap, recv, self.n_args.n_exprs)
3076 var res2 = v.compile_callsite(callsite, args)
3077 if res2 != null then
3078 #self.debug("got {res2} from {mproperty}. drop {recv}")
3085 redef class AAttrExpr
3088 var recv = v.expr(self.n_expr, null)
3089 var mproperty = self.mproperty.as(not null)
3090 return v.read_attribute(mproperty, recv)
3094 redef class AAttrAssignExpr
3097 var recv = v.expr(self.n_expr, null)
3098 var i = v.expr(self.n_value, null)
3099 var mproperty = self.mproperty.as(not null)
3100 v.write_attribute(mproperty, recv, i)
3105 redef class AAttrReassignExpr
3108 var recv = v.expr(self.n_expr, null)
3109 var value = v.expr(self.n_value, null)
3110 var mproperty = self.mproperty.as(not null)
3111 var attr = v.read_attribute(mproperty, recv)
3112 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
3114 v.write_attribute(mproperty, recv, res)
3118 redef class AIssetAttrExpr
3121 var recv = v.expr(self.n_expr, null)
3122 var mproperty = self.mproperty.as(not null)
3123 return v.isset_attribute(mproperty, recv)
3127 redef class AVarargExpr
3130 return v.expr(self.n_expr, null)
3134 redef class ANamedargExpr
3137 return v.expr(self.n_expr, null)
3141 redef class ADebugTypeExpr
3150 redef class Array[E]
3151 # Return a new `Array` with the elements only contened in self and not in `o
`
3152 fun -(o: Array[E]): Array[E] do
3153 var res = new Array[E]
3154 for e in self do if not o.has(e) then res.add(e)
3160 # All `MProperty` associated to all `MClassDef` of `mclass
`
3161 fun properties(mclass: MClass): Set[MProperty] do
3162 if not self.properties_cache.has_key(mclass) then
3163 var properties = new HashSet[MProperty]
3164 var parents = new Array[MClass]
3165 if self.flatten_mclass_hierarchy.has(mclass) then
3166 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
3168 for parent in parents do
3169 properties.add_all(self.properties(parent))
3171 for mclassdef in mclass.mclassdefs do
3172 if not self.in_importation <= mclassdef.mmodule then continue
3173 for mprop in mclassdef.intro_mproperties do
3174 properties.add(mprop)
3177 self.properties_cache[mclass] = properties
3179 return properties_cache[mclass]
3181 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
3183 # Write FFI and nitni results to file
3184 fun finalize_ffi(c: AbstractCompiler) do end
3186 # Give requided addinional system libraries (as given to LD_LIBS)
3187 # Note: can return null instead of an empty set
3188 fun collect_linker_libs: nullable Array[String] do return null
3191 # Create a tool context to handle options and paths
3192 var toolcontext = new ToolContext
3194 toolcontext.tooldescription = "Usage: nitc [OPTION]... file.nit...\nCompiles Nit programs."
3196 # We do not add other options, so process them now!
3197 toolcontext.process_options(args)
3199 # We need a model to collect stufs
3200 var model = new Model
3201 # An a model builder to parse files
3202 var modelbuilder = new ModelBuilder(model, toolcontext)
3204 var arguments = toolcontext.option_context.rest
3205 if arguments.length > 1 and toolcontext.opt_output.value != null then
3206 print "Option Error: --output needs a single source file. Do you prefer --dir?"
3210 # Here we load an process all modules passed on the command line
3211 var mmodules = modelbuilder.parse(arguments)
3213 if mmodules.is_empty then return
3214 modelbuilder.run_phases
3216 for mmodule in mmodules do
3217 toolcontext.info("*** PROCESS {mmodule} ***", 1)
3219 toolcontext.run_global_phases(ms)