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
22 import auto_super_init
27 # Add compiling options
28 redef class ToolContext
30 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
32 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
34 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
36 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
38 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
40 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
42 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
43 # --no-check-covariance
44 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
45 # --no-check-initialization
46 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
48 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
50 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
52 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
53 # --typing-test-metrics
54 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
55 # --invocation-metrics
56 var opt_invocation_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all method invocations", "--invocation-metrics")
58 var opt_stacktrace
: OptionString = new OptionString("Control the generation of stack traces", "--stacktrace")
60 var opt_no_gcc_directive
= new OptionArray("Disable a advanced gcc directives for optimization", "--no-gcc-directive")
65 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_make_flags
, self.opt_compile_dir
, self.opt_hardening
, self.opt_no_shortcut_range
)
66 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_initialization
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_other
)
67 self.option_context
.add_option
(self.opt_typing_test_metrics
, self.opt_invocation_metrics
)
68 self.option_context
.add_option
(self.opt_stacktrace
)
69 self.option_context
.add_option
(self.opt_no_gcc_directive
)
72 redef fun process_options
(args
)
76 var st
= opt_stacktrace
.value
77 if st
== null or st
== "none" or st
== "libunwind" or st
== "gperf" then
79 else if st
== "auto" then
81 opt_stacktrace
.value
= null
83 print
"Error: unknown value `{st}` for --stacktrace. Use `none`, `libunwind`, `gperf` or `auto`."
89 redef class ModelBuilder
90 # The compilation directory
91 var compile_dir
: String
93 # Simple indirection to `Toolchain::write_and_make`
94 protected fun write_and_make
(compiler
: AbstractCompiler)
96 var platform
= compiler
.mainmodule
.target_platform
98 if platform
== null then
99 toolchain
= new MakefileToolchain(toolcontext
)
101 toolchain
= platform
.toolchain
(toolcontext
)
103 compile_dir
= toolchain
.compile_dir
104 toolchain
.write_and_make compiler
109 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
113 var toolcontext
: ToolContext
115 fun compile_dir
: String
117 var compile_dir
= toolcontext
.opt_compile_dir
.value
118 if compile_dir
== null then compile_dir
= ".nit_compile"
122 fun write_and_make
(compiler
: AbstractCompiler) is abstract
125 class MakefileToolchain
127 # The list of directories to search for included C headers (-I for C compilers)
128 # The list is initially set with :
129 # * the toolcontext --cc-path option
130 # * the NIT_CC_PATH environment variable
131 # * some heuristics including the NIT_DIR environment variable and the progname of the process
132 # Path can be added (or removed) by the client
133 var cc_paths
= new Array[String]
135 protected fun gather_cc_paths
137 # Look for the the Nit clib path
138 var path_env
= "NIT_DIR".environ
139 if not path_env
.is_empty
then
140 var libname
= "{path_env}/clib"
141 if libname
.file_exists
then cc_paths
.add
(libname
)
144 var libname
= "{sys.program_name.dirname}/../clib"
145 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
147 if cc_paths
.is_empty
then
148 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
151 # Add user defined cc_paths
152 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
154 path_env
= "NIT_CC_PATH".environ
155 if not path_env
.is_empty
then
156 cc_paths
.append
(path_env
.split_with
(':'))
160 redef fun write_and_make
(compiler
)
164 var mainmodule
= compiler
.mainmodule
165 var compile_dir
= compile_dir
167 # Generate the .h and .c files
168 # A single C file regroups many compiled rumtime functions
169 # Note that we do not try to be clever an a small change in a Nit source file may change the content of all the generated .c files
171 self.toolcontext
.info
("*** WRITING C ***", 1)
175 var cfiles
= new Array[String]
176 write_files
(compiler
, compile_dir
, cfiles
)
178 # Generate the Makefile
180 write_makefile
(compiler
, compile_dir
, cfiles
)
183 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
185 # Execute the Makefile
187 if self.toolcontext
.opt_no_cc
.value
then return
190 self.toolcontext
.info
("*** COMPILING C ***", 1)
192 compile_c_code
(compiler
, compile_dir
)
195 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
198 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
200 if self.toolcontext
.opt_stacktrace
.value
== "gperf" then compiler
.build_c_to_nit_bindings
202 # Add gc_choser.h to aditionnal bodies
203 var gc_chooser
= new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
204 compiler
.extern_bodies
.add
(gc_chooser
)
205 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
206 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
209 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
210 for m
in compiler
.mainmodule
.in_importation
.greaters
do
211 compiler
.finalize_ffi_for_module
(m
)
214 # Copy original .[ch] files to compile_dir
215 for src
in compiler
.files_to_copy
do
216 var basename
= src
.basename
("")
217 var dst
= "{compile_dir}/{basename}"
221 var hfilename
= compiler
.header
.file
.name
+ ".h"
222 var hfilepath
= "{compile_dir}/{hfilename}"
223 var h
= new OFStream.open
(hfilepath
)
224 for l
in compiler
.header
.decl_lines
do
228 for l
in compiler
.header
.lines
do
234 for f
in compiler
.files
do
236 var hfile
: nullable OFStream = null
238 var cfilename
= "{f.name}.0.h"
239 var cfilepath
= "{compile_dir}/{cfilename}"
240 hfile
= new OFStream.open
(cfilepath
)
241 hfile
.write
"#include \"{hfilename}\
"\n"
242 for key
in f
.required_declarations
do
243 if not compiler
.provided_declarations
.has_key
(key
) then
244 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
246 node
.debug
"No provided declaration for {key}"
248 print
"No provided declaration for {key}"
252 hfile
.write compiler
.provided_declarations
[key
]
256 var file
: nullable OFStream = null
257 for vis
in f
.writers
do
258 if vis
== compiler
.header
then continue
259 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
260 if total_lines
== 0 then continue
262 if file
== null or count
> 10000 then
264 if file
!= null then file
.close
265 cfilename
= "{f.name}.{i}.c"
266 cfilepath
= "{compile_dir}/{cfilename}"
267 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
268 cfiles
.add
(cfilename
)
269 file
= new OFStream.open
(cfilepath
)
270 file
.write
"#include \"{f.name}.0.h\
"\n"
273 for l
in vis
.decl_lines
do
277 for l
in vis
.lines
do
282 if file
!= null then file
.close
285 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
288 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
290 var mainmodule
= compiler
.mainmodule
292 var outname
= self.toolcontext
.opt_output
.value
293 if outname
== null then
294 outname
= "{mainmodule.name}"
297 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
298 var outpath
= orig_dir
.join_path
(outname
).simplify_path
299 var makename
= "{mainmodule.name}.mk"
300 var makepath
= "{compile_dir}/{makename}"
301 var makefile
= new OFStream.open
(makepath
)
305 cc_includes
+= " -I \"" + p + "\
""
308 var linker_options
= new HashSet[String]
309 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
310 for m
in mainmodule
.in_importation
.greaters
do
311 var libs
= m
.collect_linker_libs
312 if libs
!= null then linker_options
.add_all
(libs
)
315 var ost
= toolcontext
.opt_stacktrace
.value
316 if ost
== "libunwind" or ost
== "gperf" then linker_options
.add
("-lunwind")
318 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
319 makefile
.write
("all: {outpath}\n\n")
321 var ofiles
= new Array[String]
322 var dep_rules
= new Array[String]
323 # Compile each generated file
325 var o
= f
.strip_extension
(".c") + ".o"
326 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -c -o {o} {f}\n\n")
331 # Compile each required extern body into a specific .o
332 for f
in compiler
.extern_bodies
do
333 var o
= f
.makefile_rule_name
334 var ff
= f
.filename
.basename
("")
335 makefile
.write
("{o}: {ff}\n")
336 makefile
.write
("\t{f.makefile_rule_content}\n\n")
337 dep_rules
.add
(f
.makefile_rule_name
)
342 makefile
.write
("{outpath}: {dep_rules.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
344 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
346 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
349 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
351 var makename
= "{compiler.mainmodule.name}.mk" # FIXME duplicated from write_makefile
353 var makeflags
= self.toolcontext
.opt_make_flags
.value
354 if makeflags
== null then makeflags
= ""
355 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
358 if self.toolcontext
.verbose_level
>= 3 then
359 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
361 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
364 toolcontext
.error
(null, "make failed! Error code: {res}.")
369 # Singleton that store the knowledge about the compilation process
370 abstract class AbstractCompiler
371 type VISITOR: AbstractCompilerVisitor
373 # Table corresponding c_names to nit names (methods)
374 var names
= new HashMap[String, String]
376 # The main module of the program currently compiled
377 # Is assigned during the separate compilation
378 var mainmodule
: MModule writable
380 # The real main module of the program
381 var realmainmodule
: MModule
383 # The modeulbuilder used to know the model and the AST
384 var modelbuilder
: ModelBuilder protected writable
386 # Is hardening asked? (see --hardening)
387 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
389 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
391 self.mainmodule
= mainmodule
392 self.realmainmodule
= mainmodule
393 self.modelbuilder
= modelbuilder
396 # Force the creation of a new file
397 # The point is to avoid contamination between must-be-compiled-separately files
398 fun new_file
(name
: String): CodeFile
400 var f
= new CodeFile(name
)
405 # The list of all associated files
406 # Used to generate .c files
407 var files
: List[CodeFile] = new List[CodeFile]
409 # Initialize a visitor specific for a compiler engine
410 fun new_visitor
: VISITOR is abstract
412 # Where global declaration are stored (the main .h)
413 var header
: CodeWriter writable
415 # Provide a declaration that can be requested (before or latter) by a visitor
416 fun provide_declaration
(key
: String, s
: String)
418 if self.provided_declarations
.has_key
(key
) then
419 assert self.provided_declarations
[key
] == s
421 self.provided_declarations
[key
] = s
424 private var provided_declarations
= new HashMap[String, String]
426 private var requirers_of_declarations
= new HashMap[String, ANode]
428 # Builds the .c and .h files to be used when generating a Stack Trace
429 # Binds the generated C function names to Nit function names
430 fun build_c_to_nit_bindings
432 var compile_dir
= modelbuilder
.compile_dir
434 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
435 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
436 stream
.write
("%define lookup-function-name get_nit_name\n")
437 stream
.write
("struct C_Nit_Names;\n")
439 stream
.write
("####\n")
440 for i
in names
.keys
do
442 stream
.write
(",\t\"")
443 stream.write(names[i])
446 if names
.is_empty
then
447 stream
.write
("DEAD,\t\"DEAD\
"\n") # Force at least one entry
449 stream
.write
("####\n")
453 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
454 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
455 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
458 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
461 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
465 # This method call compile_header_strucs method that has to be refined
466 fun compile_header
do
468 var toolctx
= modelbuilder
.toolcontext
469 self.header
.add_decl
("#include <stdlib.h>")
470 self.header
.add_decl
("#include <stdio.h>")
471 self.header
.add_decl
("#include <string.h>")
472 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
474 compile_header_structs
475 compile_nitni_structs
477 var gccd_disable
= modelbuilder
.toolcontext
.opt_no_gcc_directive
.value
478 if gccd_disable
.has
("noreturn") or gccd_disable
.has
("all") then
479 # Signal handler function prototype
480 self.header
.add_decl
("void show_backtrace(int);")
482 self.header
.add_decl
("void show_backtrace(int) __attribute__ ((noreturn));")
485 if gccd_disable
.has
("likely") or gccd_disable
.has
("all") then
486 self.header
.add_decl
("#define likely(x) (x)")
487 self.header
.add_decl
("#define unlikely(x) (x)")
488 else if gccd_disable
.has
("correct-likely") then
489 # invert the `likely` definition
490 # Used by masochists to bench the worst case
491 self.header
.add_decl
("#define likely(x) __builtin_expect((x),0)")
492 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),1)")
494 self.header
.add_decl
("#define likely(x) __builtin_expect((x),1)")
495 self.header
.add_decl
("#define unlikely(x) __builtin_expect((x),0)")
498 # Global variable used by intern methods
499 self.header
.add_decl
("extern int glob_argc;")
500 self.header
.add_decl
("extern char **glob_argv;")
501 self.header
.add_decl
("extern val *glob_sys;")
504 # Declaration of structures for live Nit types
505 protected fun compile_header_structs
is abstract
507 # Declaration of structures for nitni undelying the FFI
508 protected fun compile_nitni_structs
is abstract
510 # Generate the main C function.
512 # * allocate the Sys object if it exists
513 # * call init if is exists
514 # * call main if it exists
515 fun compile_main_function
517 var v
= self.new_visitor
518 v
.add_decl
("#include <signal.h>")
519 var ost
= modelbuilder
.toolcontext
.opt_stacktrace
.value
523 modelbuilder
.toolcontext
.opt_stacktrace
.value
= ost
526 if ost
== "gperf" or ost
== "libunwind" then
527 v
.add_decl
("#define UNW_LOCAL_ONLY")
528 v
.add_decl
("#include <libunwind.h>")
529 if ost
== "gperf" then
530 v
.add_decl
("#include \"c_functions_hash
.h\
"")
533 v
.add_decl
("int glob_argc;")
534 v
.add_decl
("char **glob_argv;")
535 v
.add_decl
("val *glob_sys;")
537 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
538 for tag
in count_type_test_tags
do
539 v
.add_decl
("long count_type_test_resolved_{tag};")
540 v
.add_decl
("long count_type_test_unresolved_{tag};")
541 v
.add_decl
("long count_type_test_skipped_{tag};")
542 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
543 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
544 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
548 if self.modelbuilder
.toolcontext
.opt_invocation_metrics
.value
then
549 v
.add_decl
("long count_invoke_by_tables;")
550 v
.add_decl
("long count_invoke_by_direct;")
551 v
.add_decl
("long count_invoke_by_inline;")
552 v
.compiler
.header
.add_decl
("extern long count_invoke_by_tables;")
553 v
.compiler
.header
.add_decl
("extern long count_invoke_by_direct;")
554 v
.compiler
.header
.add_decl
("extern long count_invoke_by_inline;")
557 v
.add_decl
("void sig_handler(int signo)\{")
558 v
.add_decl
("printf(\"Caught signal
: %s\\n\
", strsignal(signo));")
559 v
.add_decl
("show_backtrace(signo);")
562 v
.add_decl
("void show_backtrace (int signo) \{")
563 if ost
== "gperf" or ost
== "libunwind" then
564 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
565 v
.add_decl
("unw_cursor_t cursor;")
566 v
.add_decl
("if(opt==NULL)\{")
567 v
.add_decl
("unw_context_t uc;")
568 v
.add_decl
("unw_word_t ip;")
569 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
570 v
.add_decl
("unw_getcontext(&uc);")
571 v
.add_decl
("unw_init_local(&cursor, &uc);")
572 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
573 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
574 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
575 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
576 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
577 if ost
== "gperf" then
578 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
579 v
.add_decl
(" if (recv != 0)\{")
580 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
581 v.add_decl(" \}else\{")
582 v.add_decl(" printf(\"` %s\\n\
", procname);")
585 v
.add_decl
(" printf(\"` %s \\n\",procname);")
588 v.add_decl("printf(\"-------------------------------------------------\\n\");")
589 v.add_decl("free(procname);")
592 v.add_decl("exit(signo);")
595 v.add_decl("int main(int argc, char** argv) \{")
597 v.add("signal(SIGABRT, sig_handler);")
598 v.add("signal(SIGFPE, sig_handler);")
599 v.add("signal(SIGILL, sig_handler);")
600 v.add("signal(SIGINT, sig_handler);")
601 v.add("signal(SIGTERM, sig_handler);")
602 v.add("signal(SIGSEGV, sig_handler);")
603 v.add("signal(SIGPIPE, sig_handler);")
605 v.add("glob_argc = argc; glob_argv = argv;")
606 v.add("initialize_gc_option();")
607 var main_type = mainmodule.sys_type
608 if main_type != null then
609 var mainmodule = v.compiler.mainmodule
610 var glob_sys = v.init_instance(main_type)
611 v.add("glob_sys = {glob_sys};")
612 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
613 if main_init != null then
614 v.send(main_init, [glob_sys])
616 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
617 if main_method != null then
618 v.send(main_method, [glob_sys])
622 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
623 v.add_decl("long count_type_test_resolved_total = 0;")
624 v.add_decl("long count_type_test_unresolved_total = 0;")
625 v.add_decl("long count_type_test_skipped_total = 0;")
626 v.add_decl("long count_type_test_total_total = 0;")
627 for tag in count_type_test_tags do
628 v.add_decl("long count_type_test_total_{tag};")
629 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
630 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
631 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
632 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
633 v.add("count_type_test_total_total += count_type_test_total_{tag};")
635 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
636 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
637 var tags = count_type_test_tags.to_a
640 v.add("printf(\"{tag}\");")
641 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
642 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
643 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
644 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
648 if self.modelbuilder.toolcontext.opt_invocation_metrics.value then
649 v.add_decl("long count_invoke_total;")
650 v.add("count_invoke_total = count_invoke_by_tables + count_invoke_by_direct + count_invoke_by_inline;")
651 v.add("printf(\"# dynamic count_invocation: total %ld\\n\", count_invoke_total);")
652 v.add("printf(\"by table: %ld (%.2f%%)\\n\", count_invoke_by_tables, 100.0*count_invoke_by_tables/count_invoke_total);")
653 v.add("printf(\"direct: %ld (%.2f%%)\\n\", count_invoke_by_direct, 100.0*count_invoke_by_direct/count_invoke_total);")
654 v.add("printf(\"inlined: %ld (%.2f%%)\\n\", count_invoke_by_inline, 100.0*count_invoke_by_inline/count_invoke_total);")
660 # List of additional files required to compile (FFI)
661 var extern_bodies = new Array[ExternFile]
663 # List of source files to copy over to the compile dir
664 var files_to_copy = new Array[String]
666 # This is used to avoid adding an extern file more than once
667 private var seen_extern = new ArraySet[String]
669 # Generate code that initialize the attributes on a new instance
670 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
672 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
673 self.mainmodule.linearize_mclassdefs(cds)
675 var n = self.modelbuilder.mclassdef2nclassdef[cd]
676 for npropdef in n.n_propdefs do
677 if npropdef isa AAttrPropdef then
678 npropdef.init_expr(v, recv)
684 # Generate code that check if an attribute is correctly initialized
685 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
687 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
688 self.mainmodule.linearize_mclassdefs(cds)
690 var n = self.modelbuilder.mclassdef2nclassdef[cd]
691 for npropdef in n.n_propdefs do
692 if npropdef isa AAttrPropdef then
693 npropdef.check_expr(v, recv)
701 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
702 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
703 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
704 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
706 protected fun init_count_type_test_tags: HashMap[String, Int]
708 var res = new HashMap[String, Int]
709 for tag in count_type_test_tags do
715 # Display stats about compilation process
717 # * type tests against resolved types (`x
isa Collection[Animal]`)
718 # * type tests against unresolved types (`x
isa Collection[E
]`)
719 # * type tests skipped
724 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
725 print "# static count_type_test"
726 print "\tresolved:\tunresolved\tskipped\ttotal"
727 var count_type_test_total = init_count_type_test_tags
728 count_type_test_resolved["total"] = 0
729 count_type_test_unresolved["total"] = 0
730 count_type_test_skipped["total"] = 0
731 count_type_test_total["total"] = 0
732 for tag in count_type_test_tags do
733 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
734 count_type_test_resolved["total"] += count_type_test_resolved[tag]
735 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
736 count_type_test_skipped["total"] += count_type_test_skipped[tag]
737 count_type_test_total["total"] += count_type_test_total[tag]
739 var count_type_test = count_type_test_total["total"]
740 var tags = count_type_test_tags.to_a
744 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
745 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
746 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
747 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
753 fun finalize_ffi_for_module(mmodule: MModule) do mmodule.finalize_ffi(self)
756 # Avoid division by zero by returning the string "n/a"
757 fun div(a,b:Int):String
759 if b == 0 then return "n/a"
760 return ((a*10000/b).to_f / 100.0).to_precision(2)
764 # A file unit (may be more than one file if
765 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
768 var writers = new Array[CodeWriter]
769 var required_declarations = new HashSet[String]
772 # Where to store generated lines
775 var lines: List[String] = new List[String]
776 var decl_lines: List[String] = new List[String]
778 # Add a line in the main part of the generated C
779 fun add(s: String) do self.lines.add(s)
782 # (used for local or global declaration)
783 fun add_decl(s: String) do self.decl_lines.add(s)
788 file.writers.add(self)
792 # A visitor on the AST of property definition that generate the C code.
793 abstract class AbstractCompilerVisitor
795 type COMPILER: AbstractCompiler
797 # The associated compiler
798 var compiler: COMPILER
800 # The current visited AST node
801 var current_node: nullable ANode writable = null
803 # The current `Frame`
804 var frame: nullable Frame writable
806 # Alias for self.compiler.mainmodule.object_type
807 fun object_type: MClassType do return self.compiler.mainmodule.object_type
809 # Alias for self.compiler.mainmodule.bool_type
810 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
812 var writer: CodeWriter
814 init(compiler: COMPILER)
816 self.compiler = compiler
817 self.writer = new CodeWriter(compiler.files.last)
820 # Force to get the primitive class named `name
` or abort
821 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
823 # Force to get the primitive property named `name
` in the instance `recv
` or abort
824 fun get_property(name: String, recv: MType): MMethod
826 assert recv isa MClassType
827 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
830 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
832 return self.send(callsite.mproperty, args)
835 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
837 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
839 # Transform varargs, in raw arguments, into a single argument of type `Array`
840 # Note: this method modify the given `args
`
841 # If there is no vararg, then `args
` is not modified.
842 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
844 var recv = args.first
845 var vararg_rank = msignature.vararg_rank
846 if vararg_rank >= 0 then
847 assert args.length >= msignature.arity + 1 # because of self
849 args = new Array[RuntimeVariable]
851 args.add(rawargs.first) # recv
853 for i in [0..vararg_rank[ do
854 args.add(rawargs[i+1])
857 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
858 var vararg = new Array[RuntimeVariable]
859 for i in [vararg_rank..vararg_lastrank] do
860 vararg.add(rawargs[i+1])
863 var elttype = msignature.mparameters[vararg_rank].mtype
864 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
866 for i in [vararg_lastrank+1..rawargs.length-1[ do
867 args.add(rawargs[i+1])
870 rawargs.add_all(args)
876 # Anchor a type to the main module and the current receiver
877 fun anchor(mtype: MType): MType
879 if not mtype.need_anchor then return mtype
880 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
883 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
885 if not mtype.need_anchor then return mtype
886 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
889 # Unsafely cast a value to a new type
890 # ie the result share the same C variable but my have a different mcasttype
891 # NOTE: if the adaptation is useless then `value
` is returned as it.
892 # ENSURE: `result
.name
== value
.name
`
893 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
895 mtype = self.anchor(mtype)
896 var valmtype = value.mcasttype
897 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
901 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
902 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
905 var res = new RuntimeVariable(value.name, valmtype, mtype)
910 # Generate a super call from a method definition
911 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
913 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
915 # Box or unbox a value to another type iff a C type conversion is needed
916 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
917 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
919 # Generate a polymorphic subtype test
920 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
922 # Generate the code required to dynamically check if 2 objects share the same runtime type
923 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
925 # Generate a Nit "is" for two runtime_variables
926 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
930 # Generate a static call on a method definition
931 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
933 # Generate a polymorphic send for the method `m
` and the arguments `args
`
934 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
936 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
937 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
939 assert t isa MClassType
940 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
941 return self.call(propdef, t, args)
944 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
945 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
947 assert t isa MClassType
948 m = m.lookup_next_definition(self.compiler.mainmodule, t)
949 return self.call(m, t, args)
952 # Attributes handling
954 # Generate a polymorphic attribute is_set test
955 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
957 # Generate a polymorphic attribute read
958 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
960 # Generate a polymorphic attribute write
961 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
965 # Add a check and an abort for a null reciever if needed
966 fun check_recv_notnull(recv: RuntimeVariable)
968 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
970 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
972 self.add("if (unlikely({recv} == NULL)) \{")
973 self.add_abort("Receiver is null")
980 private var names: HashSet[String] = new HashSet[String]
981 private var last: Int = 0
983 # Return a new name based on `s
` and unique in the visitor
984 fun get_name(s: String): String
986 if not self.names.has(s) then
990 var i = self.last + 1
993 if not self.names.has(s2) then
1002 # Return an unique and stable identifier associated with an escapemark
1003 fun escapemark_name(e: nullable EscapeMark): String
1006 if escapemark_names.has_key(e) then return escapemark_names[e]
1008 if name == null then name = "label"
1009 name = get_name(name)
1010 escapemark_names[e] = name
1014 private var escapemark_names = new HashMap[EscapeMark, String]
1016 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1017 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
1018 fun class_name_string(value: RuntimeVariable): String is abstract
1020 # Variables handling
1022 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
1024 # Return the local runtime_variable associated to a Nit local variable
1025 fun variable(variable: Variable): RuntimeVariable
1027 if self.variables.has_key(variable) then
1028 return self.variables[variable]
1030 var name = self.get_name("var_{variable.name}")
1031 var mtype = variable.declared_type.as(not null)
1032 mtype = self.anchor(mtype)
1033 var res = new RuntimeVariable(name, mtype, mtype)
1034 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
1035 self.variables[variable] = res
1040 # Return a new uninitialized local runtime_variable
1041 fun new_var(mtype: MType): RuntimeVariable
1043 mtype = self.anchor(mtype)
1044 var name = self.get_name("var")
1045 var res = new RuntimeVariable(name, mtype, mtype)
1046 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1050 # Return a new uninitialized named runtime_variable
1051 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1053 mtype = self.anchor(mtype)
1054 var res = new RuntimeVariable(name, mtype, mtype)
1055 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1059 # Correctly assign a left and a right value
1060 # Boxing and unboxing is performed if required
1061 fun assign(left, right: RuntimeVariable)
1063 right = self.autobox(right, left.mtype)
1064 self.add("{left} = {right};")
1067 # Generate instances
1069 # Generate a alloc-instance + init-attributes
1070 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1072 # Generate an integer value
1073 fun int_instance(value: Int): RuntimeVariable
1075 var res = self.new_var(self.get_class("Int").mclass_type)
1076 self.add("{res} = {value};")
1080 # Generate a string value
1081 fun string_instance(string: String): RuntimeVariable
1083 var mtype = self.get_class("String").mclass_type
1084 var name = self.get_name("varonce")
1085 self.add_decl("static {mtype.ctype} {name};")
1086 var res = self.new_var(mtype)
1087 self.add("if ({name}) \{")
1088 self.add("{res} = {name};")
1089 self.add("\} else \{")
1090 var native_mtype = self.get_class("NativeString").mclass_type
1091 var nat = self.new_var(native_mtype)
1092 self.add("{nat} = \"{string.escape_to_c}\";")
1093 var length = self.int_instance(string.length)
1094 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1095 self.add("{name} = {res};")
1100 # Generate an array value
1101 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1103 # Get an instance of a array for a vararg
1104 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1108 # Add a line in the main part of the generated C
1109 fun add(s: String) do self.writer.lines.add(s)
1112 # (used for local or global declaration)
1113 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1115 # Request the presence of a global declaration
1116 fun require_declaration(key: String)
1118 var reqs = self.writer.file.required_declarations
1119 if reqs.has(key) then return
1121 var node = current_node
1122 if node != null then compiler.requirers_of_declarations[key] = node
1125 # Add a declaration in the local-header
1126 # The declaration is ensured to be present once
1127 fun declare_once(s: String)
1129 self.compiler.provide_declaration(s, s)
1130 self.require_declaration(s)
1133 # look for a needed .h and .c file for a given .nit source-file
1134 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1135 fun add_extern(file: String)
1137 file = file.strip_extension(".nit")
1138 var tryfile = file + ".nit.h"
1139 if tryfile.file_exists then
1140 self.declare_once("#include \"{tryfile.basename("")}\"")
1141 self.compiler.files_to_copy.add(tryfile)
1143 tryfile = file + "_nit.h"
1144 if tryfile.file_exists then
1145 self.declare_once("#include \"{tryfile.basename("")}\"")
1146 self.compiler.files_to_copy.add(tryfile)
1149 if self.compiler.seen_extern.has(file) then return
1150 self.compiler.seen_extern.add(file)
1151 tryfile = file + ".nit.c"
1152 if not tryfile.file_exists then
1153 tryfile = file + "_nit.c"
1154 if not tryfile.file_exists then return
1156 var f = new ExternCFile(tryfile.basename(""), "")
1157 self.compiler.extern_bodies.add(f)
1158 self.compiler.files_to_copy.add(tryfile)
1161 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1162 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1164 var res = new_var(mtype)
1165 self.add("{res} = {cexpr};")
1169 # Generate generic abort
1170 # used by aborts, asserts, casts, etc.
1171 fun add_abort(message: String)
1173 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1179 if self.current_node != null and self.current_node.location.file != null then
1180 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1182 self.add("fprintf(stderr, \"\\n\");")
1184 self.add("show_backtrace(1);")
1187 # Add a dynamic cast
1188 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1190 var res = self.type_test(value, mtype, tag)
1191 self.add("if (unlikely(!{res})) \{")
1192 var cn = self.class_name_string(value)
1193 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1198 # Generate a return with the value `s
`
1199 fun ret(s: RuntimeVariable)
1201 self.assign(self.frame.returnvar.as(not null), s)
1202 self.add("goto {self.frame.returnlabel.as(not null)};")
1205 # Compile a statement (if any)
1206 fun stmt(nexpr: nullable AExpr)
1208 if nexpr == null then return
1209 var old = self.current_node
1210 self.current_node = nexpr
1212 self.current_node = old
1215 # Compile an expression an return its result
1216 # `mtype
` is the expected return type, pass null if no specific type is expected.
1217 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1219 var old = self.current_node
1220 self.current_node = nexpr
1221 var res = nexpr.expr(self).as(not null)
1222 if mtype != null then
1223 mtype = self.anchor(mtype)
1224 res = self.autobox(res, mtype)
1226 res = autoadapt(res, nexpr.mtype.as(not null))
1227 var implicit_cast_to = nexpr.implicit_cast_to
1228 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1229 add_cast(res, implicit_cast_to, "auto")
1230 res = autoadapt(res, implicit_cast_to)
1232 self.current_node = old
1236 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1237 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1239 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1240 fun debug(message: String)
1242 var node = self.current_node
1243 if node == null then
1244 print "?: {message}"
1248 self.add("/* DEBUG: {message} */")
1252 # A C function associated to a Nit method
1253 # Because of customization, a given Nit method can be compiler more that once
1254 abstract class AbstractRuntimeFunction
1256 type COMPILER: AbstractCompiler
1257 type VISITOR: AbstractCompilerVisitor
1259 # The associated Nit method
1260 var mmethoddef: MMethodDef
1262 # The mangled c name of the runtime_function
1263 # Subclasses should redefine `build_c_name
` instead
1266 var res = self.c_name_cache
1267 if res != null then return res
1268 res = self.build_c_name
1269 self.c_name_cache = res
1273 # Non cached version of `c_name
`
1274 protected fun build_c_name: String is abstract
1276 protected var c_name_cache: nullable String writable = null
1278 # Implements a call of the runtime_function
1279 # May inline the body or generate a C function call
1280 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1282 # Generate the code for the `AbstractRuntimeFunction`
1283 # Warning: compile more than once compilation makes CC unhappy
1284 fun compile_to_c(compiler: COMPILER) is abstract
1287 # A runtime variable hold a runtime value in C.
1288 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1290 # 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.
1291 class RuntimeVariable
1292 # The name of the variable in the C code
1295 # The static type of the variable (as declard in C)
1298 # The current casted type of the variable (as known in Nit)
1299 var mcasttype: MType writable
1301 # If the variable exaclty a mcasttype?
1302 # false (usual value) means that the variable is a mcasttype or a subtype.
1303 var is_exact: Bool writable = false
1305 init(name: String, mtype: MType, mcasttype: MType)
1309 self.mcasttype = mcasttype
1310 assert not mtype.need_anchor
1311 assert not mcasttype.need_anchor
1314 redef fun to_s do return name
1319 if self.is_exact then
1320 exact_str = " exact"
1325 if self.mtype == self.mcasttype then
1326 type_str = "{mtype}{exact_str}"
1328 type_str = "{mtype}({mcasttype}{exact_str})"
1330 return "<{name}:{type_str}>"
1334 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1337 type VISITOR: AbstractCompilerVisitor
1339 # The associated visitor
1340 var visitor: VISITOR
1342 # The executed property.
1343 # A Method in case of a call, an attribute in case of a default initialization.
1344 var mpropdef: MPropDef
1346 # The static type of the receiver
1347 var receiver: MClassType
1349 # Arguments of the method (the first is the receiver)
1350 var arguments: Array[RuntimeVariable]
1352 # The runtime_variable associated to the return (in a function)
1353 var returnvar: nullable RuntimeVariable writable = null
1355 # The label at the end of the property
1356 var returnlabel: nullable String writable = null
1360 # Return the C type associated to a given Nit static type
1361 fun ctype: String do return "val*"
1363 fun ctypename: String do return "val"
1365 # Return the name of the C structure associated to a Nit live type
1366 fun c_name: String is abstract
1367 protected var c_name_cache: nullable String protected writable
1370 redef class MClassType
1373 var res = self.c_name_cache
1374 if res != null then return res
1375 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1376 self.c_name_cache = res
1380 redef fun ctype: String
1382 if mclass.name == "Int" then
1384 else if mclass.name == "Bool" then
1386 else if mclass.name == "Char" then
1388 else if mclass.name == "Float" then
1390 else if mclass.name == "NativeString" then
1392 else if mclass.name == "NativeArray" then
1394 else if mclass.kind == extern_kind then
1401 redef fun ctypename: String
1403 if mclass.name == "Int" then
1405 else if mclass.name == "Bool" then
1407 else if mclass.name == "Char" then
1409 else if mclass.name == "Float" then
1411 else if mclass.name == "NativeString" then
1413 else if mclass.name == "NativeArray" then
1414 #return "{self.arguments.first.ctype}*"
1416 else if mclass.kind == extern_kind then
1424 redef class MGenericType
1427 var res = self.c_name_cache
1428 if res != null then return res
1430 for t in self.arguments do
1431 res = res + t.c_name
1433 self.c_name_cache = res
1438 redef class MParameterType
1441 var res = self.c_name_cache
1442 if res != null then return res
1443 res = "{self.mclass.c_name}_FT{self.rank}"
1444 self.c_name_cache = res
1449 redef class MVirtualType
1452 var res = self.c_name_cache
1453 if res != null then return res
1454 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1455 self.c_name_cache = res
1460 redef class MNullableType
1463 var res = self.c_name_cache
1464 if res != null then return res
1465 res = "nullable_{self.mtype.c_name}"
1466 self.c_name_cache = res
1472 # Return the name of the C structure associated to a Nit class
1473 fun c_name: String do
1474 var res = self.c_name_cache
1475 if res != null then return res
1476 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1477 self.c_name_cache = res
1480 private var c_name_cache: nullable String
1483 redef class MProperty
1484 fun c_name: String do
1485 var res = self.c_name_cache
1486 if res != null then return res
1487 res = "{self.intro.c_name}"
1488 self.c_name_cache = res
1491 private var c_name_cache: nullable String
1494 redef class MPropDef
1495 type VISITOR: AbstractCompilerVisitor
1497 private var c_name_cache: nullable String
1499 # The mangled name associated to the property
1502 var res = self.c_name_cache
1503 if res != null then return res
1504 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1505 self.c_name_cache = res
1510 redef class MMethodDef
1511 # Can the body be inlined?
1512 fun can_inline(v: VISITOR): Bool
1514 var modelbuilder = v.compiler.modelbuilder
1515 if modelbuilder.mpropdef2npropdef.has_key(self) then
1516 var npropdef = modelbuilder.mpropdef2npropdef[self]
1517 return npropdef.can_inline
1518 else if self.mproperty.name == "init" then
1519 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1526 # Inline the body in another visitor
1527 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1529 var modelbuilder = v.compiler.modelbuilder
1530 if modelbuilder.mpropdef2npropdef.has_key(self) then
1531 var npropdef = modelbuilder.mpropdef2npropdef[self]
1532 var oldnode = v.current_node
1533 v.current_node = npropdef
1534 self.compile_parameter_check(v, arguments)
1535 npropdef.compile_to_c(v, self, arguments)
1536 v.current_node = oldnode
1537 else if self.mproperty.name == "init" then
1538 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1539 var oldnode = v.current_node
1540 v.current_node = nclassdef
1541 self.compile_parameter_check(v, arguments)
1542 nclassdef.compile_to_c(v, self, arguments)
1543 v.current_node = oldnode
1550 # Generate type checks in the C code to check covariant parameters
1551 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1553 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1555 for i in [0..msignature.arity[ do
1556 # skip test for vararg since the array is instantiated with the correct polymorphic type
1557 if msignature.vararg_rank == i then continue
1559 # skip if the cast is not required
1560 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1561 if not origmtype.need_anchor then continue
1563 # get the parameter type
1564 var mtype = self.msignature.mparameters[i].mtype
1567 # note that v decides if and how to implements the cast
1568 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1569 v.add_cast(arguments[i+1], mtype, "covariance")
1576 redef class APropdef
1577 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1579 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1580 debug("Not yet implemented")
1583 fun can_inline: Bool do return true
1586 redef class AConcreteMethPropdef
1587 redef fun compile_to_c(v, mpropdef, arguments)
1589 for i in [0..mpropdef.msignature.arity[ do
1590 var variable = self.n_signature.n_params[i].variable.as(not null)
1591 v.assign(v.variable(variable), arguments[i+1])
1593 # Call the implicit super-init
1594 var auto_super_inits = self.auto_super_inits
1595 if auto_super_inits != null then
1596 var args = [arguments.first]
1597 for auto_super_init in auto_super_inits do
1599 for i in [0..auto_super_init.msignature.arity+1[ do
1600 args.add(arguments[i])
1602 v.compile_callsite(auto_super_init, args)
1605 v.stmt(self.n_block)
1608 redef fun can_inline
1610 if self.auto_super_inits != null then return false
1611 var nblock = self.n_block
1612 if nblock == null then return true
1613 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1614 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1619 redef class AInternMethPropdef
1620 redef fun compile_to_c(v, mpropdef, arguments)
1622 var pname = mpropdef.mproperty.name
1623 var cname = mpropdef.mclassdef.mclass.name
1624 var ret = mpropdef.msignature.return_mtype
1626 ret = v.resolve_for(ret, arguments.first)
1628 if pname != "==" and pname != "!=" then
1629 v.adapt_signature(mpropdef, arguments)
1631 if cname == "Int" then
1632 if pname == "output" then
1633 v.add("printf(\"%ld\\n\", {arguments.first});")
1635 else if pname == "object_id" then
1636 v.ret(arguments.first)
1638 else if pname == "+" then
1639 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1641 else if pname == "-" then
1642 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1644 else if pname == "unary -" then
1645 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1647 else if pname == "*" then
1648 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1650 else if pname == "/" then
1651 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1653 else if pname == "%" then
1654 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1656 else if pname == "lshift" then
1657 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1659 else if pname == "rshift" then
1660 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1662 else if pname == "==" then
1663 v.ret(v.equal_test(arguments[0], arguments[1]))
1665 else if pname == "!=" then
1666 var res = v.equal_test(arguments[0], arguments[1])
1667 v.ret(v.new_expr("!{res}", ret.as(not null)))
1669 else if pname == "<" then
1670 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1672 else if pname == ">" then
1673 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1675 else if pname == "<=" then
1676 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1678 else if pname == ">=" then
1679 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1681 else if pname == "to_f" then
1682 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1684 else if pname == "ascii" then
1685 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1688 else if cname == "Char" then
1689 if pname == "output" then
1690 v.add("printf(\"%c\", {arguments.first});")
1692 else if pname == "object_id" then
1693 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1695 else if pname == "successor" then
1696 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1698 else if pname == "predecessor" then
1699 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1701 else if pname == "==" then
1702 v.ret(v.equal_test(arguments[0], arguments[1]))
1704 else if pname == "!=" then
1705 var res = v.equal_test(arguments[0], arguments[1])
1706 v.ret(v.new_expr("!{res}", ret.as(not null)))
1708 else if pname == "<" then
1709 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1711 else if pname == ">" then
1712 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1714 else if pname == "<=" then
1715 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1717 else if pname == ">=" then
1718 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1720 else if pname == "to_i" then
1721 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1723 else if pname == "ascii" then
1724 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1727 else if cname == "Bool" then
1728 if pname == "output" then
1729 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1731 else if pname == "object_id" then
1732 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1734 else if pname == "==" then
1735 v.ret(v.equal_test(arguments[0], arguments[1]))
1737 else if pname == "!=" then
1738 var res = v.equal_test(arguments[0], arguments[1])
1739 v.ret(v.new_expr("!{res}", ret.as(not null)))
1742 else if cname == "Float" then
1743 if pname == "output" then
1744 v.add("printf(\"%f\\n\", {arguments.first});")
1746 else if pname == "object_id" then
1747 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1749 else if pname == "+" then
1750 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1752 else if pname == "-" then
1753 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1755 else if pname == "unary -" then
1756 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1758 else if pname == "succ" then
1759 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1761 else if pname == "prec" then
1762 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1764 else if pname == "*" then
1765 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1767 else if pname == "/" then
1768 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1770 else if pname == "==" then
1771 v.ret(v.equal_test(arguments[0], arguments[1]))
1773 else if pname == "!=" then
1774 var res = v.equal_test(arguments[0], arguments[1])
1775 v.ret(v.new_expr("!{res}", ret.as(not null)))
1777 else if pname == "<" then
1778 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1780 else if pname == ">" then
1781 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1783 else if pname == "<=" then
1784 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1786 else if pname == ">=" then
1787 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1789 else if pname == "to_i" then
1790 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1793 else if cname == "NativeString" then
1794 if pname == "[]" then
1795 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1797 else if pname == "[]=" then
1798 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1800 else if pname == "copy_to" then
1801 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1803 else if pname == "atoi" then
1804 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1807 else if cname == "NativeArray" then
1808 v.native_array_def(pname, ret, arguments)
1811 if pname == "exit" then
1812 v.add("exit({arguments[1]});")
1814 else if pname == "sys" then
1815 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1817 else if pname == "calloc_string" then
1818 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1820 else if pname == "calloc_array" then
1821 v.calloc_array(ret.as(not null), arguments)
1823 else if pname == "object_id" then
1824 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1826 else if pname == "is_same_type" then
1827 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1829 else if pname == "is_same_instance" then
1830 v.ret(v.equal_test(arguments[0], arguments[1]))
1832 else if pname == "output_class_name" then
1833 var nat = v.class_name_string(arguments.first)
1834 v.add("printf(\"%s\\n\", {nat});")
1836 else if pname == "native_class_name" then
1837 var nat = v.class_name_string(arguments.first)
1838 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1840 else if pname == "force_garbage_collection" then
1841 v.add("nit_gcollect();")
1843 else if pname == "native_argc" then
1844 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1846 else if pname == "native_argv" then
1847 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1850 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1851 debug("Not implemented {mpropdef}")
1855 redef class AExternMethPropdef
1856 redef fun compile_to_c(v, mpropdef, arguments)
1859 var nextern = self.n_extern
1860 if nextern == null then
1861 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1862 v.add("show_backtrace(1);")
1865 externname = nextern.text.substring(1, nextern.text.length-2)
1866 if location.file != null then
1867 var file = location.file.filename
1870 var res: nullable RuntimeVariable = null
1871 var ret = mpropdef.msignature.return_mtype
1873 ret = v.resolve_for(ret, arguments.first)
1874 res = v.new_var(ret)
1876 v.adapt_signature(mpropdef, arguments)
1879 v.add("{externname}({arguments.join(", ")});")
1881 v.add("{res} = {externname}({arguments.join(", ")});")
1887 redef class AExternInitPropdef
1888 redef fun compile_to_c(v, mpropdef, arguments)
1891 var nextern = self.n_extern
1892 if nextern == null then
1893 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1894 v.add("show_backtrace(1);")
1897 externname = nextern.text.substring(1, nextern.text.length-2)
1898 if location.file != null then
1899 var file = location.file.filename
1902 v.adapt_signature(mpropdef, arguments)
1903 var ret = arguments.first.mtype
1904 var res = v.new_var(ret)
1908 v.add("{res} = {externname}({arguments.join(", ")});")
1913 redef class AAttrPropdef
1914 redef fun compile_to_c(v, mpropdef, arguments)
1916 if arguments.length == 1 then
1917 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1918 v.assign(v.frame.returnvar.as(not null), res)
1920 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1924 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1926 var nexpr = self.n_expr
1927 if nexpr != null then
1928 var oldnode = v.current_node
1929 v.current_node = self
1930 var old_frame = v.frame
1931 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1933 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1934 v.write_attribute(self.mpropdef.mproperty, recv, value)
1936 v.current_node = oldnode
1940 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1942 var nexpr = self.n_expr
1943 if nexpr != null then return
1945 var oldnode = v.current_node
1946 v.current_node = self
1947 var old_frame = v.frame
1948 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1950 # Force read to check the initialization
1951 v.read_attribute(self.mpropdef.mproperty, recv)
1953 v.current_node = oldnode
1957 redef class AClassdef
1958 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1960 if mpropdef == self.mfree_init then
1961 var super_inits = self.super_inits
1962 if super_inits != null then
1963 assert arguments.length == 1
1964 for su in super_inits do
1965 v.send(su, arguments)
1969 var recv = arguments.first
1971 # Collect undefined attributes
1972 for npropdef in self.n_propdefs do
1973 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1974 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1984 redef class ADeferredMethPropdef
1985 redef fun compile_to_c(v, mpropdef, arguments) do
1986 var cn = v.class_name_string(arguments.first)
1987 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1990 redef fun can_inline do return true
1994 # Try to compile self as an expression
1995 # Do not call this method directly, use `v
.expr
` instead
1996 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1998 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1999 var mtype = self.mtype
2000 if mtype == null then
2003 var res = v.new_var(mtype)
2004 v.add("/* {res} = NOT YET {class_name} */")
2009 # Try to compile self as a statement
2010 # Do not call this method directly, use `v
.stmt
` instead
2011 private fun stmt(v: AbstractCompilerVisitor)
2014 if res != null then v.add("{res};")
2018 redef class ABlockExpr
2021 for e in self.n_expr do v.stmt(e)
2025 var last = self.n_expr.last
2026 for e in self.n_expr do
2027 if e == last then break
2030 return v.expr(last, null)
2034 redef class AVardeclExpr
2037 var variable = self.variable.as(not null)
2038 var ne = self.n_expr
2040 var i = v.expr(ne, variable.declared_type)
2041 v.assign(v.variable(variable), i)
2046 redef class AVarExpr
2049 var res = v.variable(self.variable.as(not null))
2050 var mtype = self.mtype.as(not null)
2051 return v.autoadapt(res, mtype)
2055 redef class AVarAssignExpr
2058 var variable = self.variable.as(not null)
2059 var i = v.expr(self.n_value, variable.declared_type)
2060 v.assign(v.variable(variable), i)
2064 var variable = self.variable.as(not null)
2065 var i = v.expr(self.n_value, variable.declared_type)
2066 v.assign(v.variable(variable), i)
2071 redef class AVarReassignExpr
2074 var variable = self.variable.as(not null)
2075 var vari = v.variable(variable)
2076 var value = v.expr(self.n_value, variable.declared_type)
2077 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2079 v.assign(v.variable(variable), res)
2083 redef class ASelfExpr
2084 redef fun expr(v) do return v.frame.arguments.first
2087 redef class AContinueExpr
2088 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2091 redef class ABreakExpr
2092 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2095 redef class AReturnExpr
2098 var nexpr = self.n_expr
2099 if nexpr != null then
2100 var returnvar = v.frame.returnvar.as(not null)
2101 var i = v.expr(nexpr, returnvar.mtype)
2102 v.assign(returnvar, i)
2104 v.add("goto {v.frame.returnlabel.as(not null)};")
2108 redef class AAbortExpr
2109 redef fun stmt(v) do v.add_abort("Aborted")
2115 var cond = v.expr_bool(self.n_expr)
2116 v.add("if ({cond})\{")
2125 var res = v.new_var(self.mtype.as(not null))
2126 var cond = v.expr_bool(self.n_expr)
2127 v.add("if ({cond})\{")
2128 v.assign(res, v.expr(self.n_then.as(not null), null))
2130 v.assign(res, v.expr(self.n_else.as(not null), null))
2136 redef class AIfexprExpr
2139 var res = v.new_var(self.mtype.as(not null))
2140 var cond = v.expr_bool(self.n_expr)
2141 v.add("if ({cond})\{")
2142 v.assign(res, v.expr(self.n_then, null))
2144 v.assign(res, v.expr(self.n_else, null))
2153 v.stmt(self.n_block)
2154 var escapemark = self.escapemark
2155 if escapemark != null then
2156 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2161 redef class AWhileExpr
2165 var cond = v.expr_bool(self.n_expr)
2166 v.add("if (!{cond}) break;")
2167 v.stmt(self.n_block)
2168 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2170 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2174 redef class ALoopExpr
2178 v.stmt(self.n_block)
2179 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2181 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2185 redef class AForExpr
2188 # Shortcut on explicit range
2189 # Avoid the instantiation of the range and the iterator
2190 var nexpr = self.n_expr
2191 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2192 var from = v.expr(nexpr.n_expr, null)
2193 var to = v.expr(nexpr.n_expr2, null)
2194 var variable = v.variable(variables.first)
2196 v.assign(variable, from)
2197 v.add("for(;;) \{ /* shortcut range */")
2199 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2201 v.add("if(!{ok}) break;")
2203 v.stmt(self.n_block)
2205 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2206 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2208 v.assign(variable, succ)
2210 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2214 var cl = v.expr(self.n_expr, null)
2215 var it_meth = self.method_iterator
2216 assert it_meth != null
2217 var it = v.compile_callsite(it_meth, [cl])
2220 var isok_meth = self.method_is_ok
2221 assert isok_meth != null
2222 var ok = v.compile_callsite(isok_meth, [it])
2224 v.add("if(!{ok}) break;")
2225 if self.variables.length == 1 then
2226 var item_meth = self.method_item
2227 assert item_meth != null
2228 var i = v.compile_callsite(item_meth, [it])
2230 v.assign(v.variable(variables.first), i)
2231 else if self.variables.length == 2 then
2232 var key_meth = self.method_key
2233 assert key_meth != null
2234 var i = v.compile_callsite(key_meth, [it])
2236 v.assign(v.variable(variables[0]), i)
2237 var item_meth = self.method_item
2238 assert item_meth != null
2239 i = v.compile_callsite(item_meth, [it])
2241 v.assign(v.variable(variables[1]), i)
2245 v.stmt(self.n_block)
2246 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2247 var next_meth = self.method_next
2248 assert next_meth != null
2249 v.compile_callsite(next_meth, [it])
2251 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2255 redef class AAssertExpr
2258 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2260 var cond = v.expr_bool(self.n_expr)
2261 v.add("if (unlikely(!{cond})) \{")
2265 v.add_abort("Assert '{nid.text}' failed")
2267 v.add_abort("Assert failed")
2276 var res = v.new_var(self.mtype.as(not null))
2277 var i1 = v.expr_bool(self.n_expr)
2278 v.add("if ({i1}) \{")
2281 var i2 = v.expr_bool(self.n_expr2)
2282 v.add("{res} = {i2};")
2288 redef class AImpliesExpr
2291 var res = v.new_var(self.mtype.as(not null))
2292 var i1 = v.expr_bool(self.n_expr)
2293 v.add("if (!{i1}) \{")
2296 var i2 = v.expr_bool(self.n_expr2)
2297 v.add("{res} = {i2};")
2303 redef class AAndExpr
2306 var res = v.new_var(self.mtype.as(not null))
2307 var i1 = v.expr_bool(self.n_expr)
2308 v.add("if (!{i1}) \{")
2311 var i2 = v.expr_bool(self.n_expr2)
2312 v.add("{res} = {i2};")
2318 redef class ANotExpr
2321 var cond = v.expr_bool(self.n_expr)
2322 return v.new_expr("!{cond}", self.mtype.as(not null))
2326 redef class AOrElseExpr
2329 var res = v.new_var(self.mtype.as(not null))
2330 var i1 = v.expr(self.n_expr, null)
2331 v.add("if ({i1}!=NULL) \{")
2334 var i2 = v.expr(self.n_expr2, null)
2341 redef class AIntExpr
2342 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2345 redef class AFloatExpr
2346 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2349 redef class ACharExpr
2350 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2353 redef class AArrayExpr
2356 var mtype = self.mtype.as(MClassType).arguments.first
2357 var array = new Array[RuntimeVariable]
2358 for nexpr in self.n_exprs.n_exprs do
2359 var i = v.expr(nexpr, mtype)
2362 return v.array_instance(array, mtype)
2366 redef class AStringFormExpr
2367 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2370 redef class ASuperstringExpr
2373 var array = new Array[RuntimeVariable]
2374 for ne in self.n_exprs do
2375 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2376 var i = v.expr(ne, null)
2379 var a = v.array_instance(array, v.object_type)
2380 var res = v.send(v.get_property("to_s", a.mtype), [a])
2385 redef class ACrangeExpr
2388 var i1 = v.expr(self.n_expr, null)
2389 var i2 = v.expr(self.n_expr2, null)
2390 var mtype = self.mtype.as(MClassType)
2391 var res = v.init_instance(mtype)
2392 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2397 redef class AOrangeExpr
2400 var i1 = v.expr(self.n_expr, null)
2401 var i2 = v.expr(self.n_expr2, null)
2402 var mtype = self.mtype.as(MClassType)
2403 var res = v.init_instance(mtype)
2404 var it = v.compile_callsite(init_callsite.as(not null), [res, i1, i2])
2409 redef class ATrueExpr
2410 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2413 redef class AFalseExpr
2414 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2417 redef class ANullExpr
2418 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2421 redef class AIsaExpr
2424 var i = v.expr(self.n_expr, null)
2425 return v.type_test(i, self.cast_type.as(not null), "isa")
2429 redef class AAsCastExpr
2432 var i = v.expr(self.n_expr, null)
2433 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2435 v.add_cast(i, self.mtype.as(not null), "as")
2440 redef class AAsNotnullExpr
2443 var i = v.expr(self.n_expr, null)
2444 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2446 v.add("if (unlikely({i} == NULL)) \{")
2447 v.add_abort("Cast failed")
2453 redef class AParExpr
2454 redef fun expr(v) do return v.expr(self.n_expr, null)
2457 redef class AOnceExpr
2460 var mtype = self.mtype.as(not null)
2461 var name = v.get_name("varonce")
2462 var guard = v.get_name(name + "_guard")
2463 v.add_decl("static {mtype.ctype} {name};")
2464 v.add_decl("static int {guard};")
2465 var res = v.new_var(mtype)
2466 v.add("if ({guard}) \{")
2467 v.add("{res} = {name};")
2469 var i = v.expr(self.n_expr, mtype)
2470 v.add("{res} = {i};")
2471 v.add("{name} = {res};")
2472 v.add("{guard} = 1;")
2478 redef class ASendExpr
2481 var recv = v.expr(self.n_expr, null)
2483 for a in self.raw_arguments.as(not null) do
2484 args.add(v.expr(a, null))
2486 return v.compile_callsite(self.callsite.as(not null), args)
2490 redef class ASendReassignFormExpr
2493 var recv = v.expr(self.n_expr, null)
2495 for a in self.raw_arguments.as(not null) do
2496 args.add(v.expr(a, null))
2498 var value = v.expr(self.n_value, null)
2500 var left = v.compile_callsite(self.callsite.as(not null), args)
2503 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2507 v.compile_callsite(self.write_callsite.as(not null), args)
2511 redef class ASuperExpr
2514 var recv = v.frame.arguments.first
2516 for a in self.n_args.n_exprs do
2517 args.add(v.expr(a, null))
2520 var callsite = self.callsite
2521 if callsite != null then
2522 # Add additionnals arguments for the super init call
2523 if args.length == 1 then
2524 for i in [0..callsite.mproperty.intro.msignature.arity[ do
2525 args.add(v.frame.arguments[i+1])
2529 var res = v.compile_callsite(callsite, args)
2533 if args.length == 1 then
2534 args = v.frame.arguments
2537 # stantard call-next-method
2538 return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
2542 redef class ANewExpr
2545 var mtype = self.mtype.as(MClassType)
2547 var ctype = mtype.ctype
2548 if ctype == "val*" then
2549 recv = v.init_instance(mtype)
2550 else if ctype == "void*" then
2551 recv = v.new_expr("NULL/*special!*/", mtype)
2553 debug("cannot new {mtype}")
2557 for a in self.n_args.n_exprs do
2558 args.add(v.expr(a, null))
2560 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2561 if res2 != null then
2562 #self.debug("got {res2} from {mproperty}. drop {recv}")
2569 redef class AAttrExpr
2572 var recv = v.expr(self.n_expr, null)
2573 var mproperty = self.mproperty.as(not null)
2574 return v.read_attribute(mproperty, recv)
2578 redef class AAttrAssignExpr
2581 var recv = v.expr(self.n_expr, null)
2582 var i = v.expr(self.n_value, null)
2583 var mproperty = self.mproperty.as(not null)
2584 v.write_attribute(mproperty, recv, i)
2588 redef class AAttrReassignExpr
2591 var recv = v.expr(self.n_expr, null)
2592 var value = v.expr(self.n_value, null)
2593 var mproperty = self.mproperty.as(not null)
2594 var attr = v.read_attribute(mproperty, recv)
2595 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2597 v.write_attribute(mproperty, recv, res)
2601 redef class AIssetAttrExpr
2604 var recv = v.expr(self.n_expr, null)
2605 var mproperty = self.mproperty.as(not null)
2606 return v.isset_attribute(mproperty, recv)
2610 redef class ADebugTypeExpr
2619 redef class Array[E]
2620 # Return a new `Array` with the elements only contened in self and not in `o
`
2621 fun -(o: Array[E]): Array[E] do
2622 var res = new Array[E]
2623 for e in self do if not o.has(e) then res.add(e)
2629 # All `MProperty` associated to all `MClassDef` of `mclass
`
2630 fun properties(mclass: MClass): Set[MProperty] do
2631 if not self.properties_cache.has_key(mclass) then
2632 var properties = new HashSet[MProperty]
2633 var parents = new Array[MClass]
2634 if self.flatten_mclass_hierarchy.has(mclass) then
2635 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2637 for parent in parents do
2638 properties.add_all(self.properties(parent))
2640 for mclassdef in mclass.mclassdefs do
2641 for mprop in mclassdef.intro_mproperties do
2642 properties.add(mprop)
2645 self.properties_cache[mclass] = properties
2647 return properties_cache[mclass]
2649 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2651 # Write FFI and nitni results to file
2652 fun finalize_ffi(c: AbstractCompiler) do end
2654 # Give requided addinional system libraries (as given to LD_LIBS)
2655 # Note: can return null instead of an empty set
2656 fun collect_linker_libs: nullable Set[String] do return null