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")
56 var opt_no_stacktrace
: OptionBool = new OptionBool("Disables libunwind and generation of C stack traces (can be problematic when compiling to targets such as Android or NaCl)", "--no-stacktrace")
57 # --stack-trace-C-to-Nit-name-binding
58 var opt_stacktrace
: OptionBool = new OptionBool("Enables the use of gperf to bind C to Nit function names when encountering a Stack trace at runtime", "--nit-stacktrace")
63 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
)
64 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
)
65 self.option_context
.add_option
(self.opt_typing_test_metrics
)
66 self.option_context
.add_option
(self.opt_stacktrace
)
67 self.option_context
.add_option
(self.opt_no_stacktrace
)
71 redef class ModelBuilder
72 redef init(model
, toolcontext
)
74 if toolcontext
.opt_no_stacktrace
.value
and toolcontext
.opt_stacktrace
.value
then
75 print
"Cannot use --nit-stacktrace when --no-stacktrace is activated"
82 # The compilation directory
83 var compile_dir
: String
85 # Simple indirection to `Toolchain::write_and_make`
86 protected fun write_and_make
(compiler
: AbstractCompiler)
88 var platform
= compiler
.mainmodule
.target_platform
90 if platform
== null then
91 toolchain
= new MakefileToolchain(toolcontext
)
93 toolchain
= platform
.toolchain
(toolcontext
)
95 compile_dir
= toolchain
.compile_dir
96 toolchain
.write_and_make compiler
101 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
105 var toolcontext
: ToolContext
107 fun compile_dir
: String
109 var compile_dir
= toolcontext
.opt_compile_dir
.value
110 if compile_dir
== null then compile_dir
= ".nit_compile"
114 fun write_and_make
(compiler
: AbstractCompiler) is abstract
117 class MakefileToolchain
119 # The list of directories to search for included C headers (-I for C compilers)
120 # The list is initially set with :
121 # * the toolcontext --cc-path option
122 # * the NIT_CC_PATH environment variable
123 # * some heuristics including the NIT_DIR environment variable and the progname of the process
124 # Path can be added (or removed) by the client
125 var cc_paths
= new Array[String]
127 protected fun gather_cc_paths
129 # Look for the the Nit clib path
130 var path_env
= "NIT_DIR".environ
131 if not path_env
.is_empty
then
132 var libname
= "{path_env}/clib"
133 if libname
.file_exists
then cc_paths
.add
(libname
)
136 var libname
= "{sys.program_name.dirname}/../clib"
137 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
139 if cc_paths
.is_empty
then
140 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
143 # Add user defined cc_paths
144 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
146 path_env
= "NIT_CC_PATH".environ
147 if not path_env
.is_empty
then
148 cc_paths
.append
(path_env
.split_with
(':'))
152 redef fun write_and_make
(compiler
)
156 var mainmodule
= compiler
.mainmodule
157 var compile_dir
= compile_dir
159 # Generate the .h and .c files
160 # A single C file regroups many compiled rumtime functions
161 # 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
163 self.toolcontext
.info
("*** WRITING C ***", 1)
167 var cfiles
= new Array[String]
168 write_files
(compiler
, compile_dir
, cfiles
)
170 # Generate the Makefile
172 write_makefile
(compiler
, compile_dir
, cfiles
)
175 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
177 # Execute the Makefile
179 if self.toolcontext
.opt_no_cc
.value
then return
182 self.toolcontext
.info
("*** COMPILING C ***", 1)
184 compile_c_code
(compiler
, compile_dir
)
187 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
190 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
192 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
194 # Add gc_choser.h to aditionnal bodies
195 var gc_chooser
= new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
196 compiler
.extern_bodies
.add
(gc_chooser
)
197 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
198 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
201 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
202 for m
in compiler
.mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
204 if m
.uses_ffi
or amodule
.uses_legacy_ni
then
205 compiler
.finalize_ffi_for_module
(amodule
)
209 # Copy original .[ch] files to compile_dir
210 for src
in compiler
.files_to_copy
do
211 var basename
= src
.basename
("")
212 var dst
= "{compile_dir}/{basename}"
216 var hfilename
= compiler
.header
.file
.name
+ ".h"
217 var hfilepath
= "{compile_dir}/{hfilename}"
218 var h
= new OFStream.open
(hfilepath
)
219 for l
in compiler
.header
.decl_lines
do
223 for l
in compiler
.header
.lines
do
229 for f
in compiler
.files
do
231 var hfile
: nullable OFStream = null
233 var cfilename
= "{f.name}.0.h"
234 var cfilepath
= "{compile_dir}/{cfilename}"
235 hfile
= new OFStream.open
(cfilepath
)
236 hfile
.write
"#include \"{hfilename}\
"\n"
237 for key
in f
.required_declarations
do
238 if not compiler
.provided_declarations
.has_key
(key
) then
239 var node
= compiler
.requirers_of_declarations
.get_or_null
(key
)
241 node
.debug
"No provided declaration for {key}"
243 print
"No provided declaration for {key}"
247 hfile
.write compiler
.provided_declarations
[key
]
251 var file
: nullable OFStream = null
252 for vis
in f
.writers
do
253 if vis
== compiler
.header
then continue
254 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
255 if total_lines
== 0 then continue
257 if file
== null or count
> 10000 then
259 if file
!= null then file
.close
260 cfilename
= "{f.name}.{i}.c"
261 cfilepath
= "{compile_dir}/{cfilename}"
262 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
263 cfiles
.add
(cfilename
)
264 file
= new OFStream.open
(cfilepath
)
265 file
.write
"#include \"{f.name}.0.h\
"\n"
268 for l
in vis
.decl_lines
do
272 for l
in vis
.lines
do
277 if file
!= null then file
.close
280 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
283 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
285 var mainmodule
= compiler
.mainmodule
287 var outname
= self.toolcontext
.opt_output
.value
288 if outname
== null then
289 outname
= "{mainmodule.name}"
292 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
293 var outpath
= orig_dir
.join_path
(outname
).simplify_path
294 var makename
= "{mainmodule.name}.mk"
295 var makepath
= "{compile_dir}/{makename}"
296 var makefile
= new OFStream.open
(makepath
)
300 cc_includes
+= " -I \"" + p + "\
""
303 var linker_options
= new HashSet[String]
304 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
305 for m
in mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
307 linker_options
.add
(amod
.c_linker_options
)
310 if not toolcontext
.opt_no_stacktrace
.value
then linker_options
.add
("-lunwind")
312 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
313 makefile
.write
("all: {outpath}\n\n")
315 var ofiles
= new Array[String]
316 var dep_rules
= new Array[String]
317 # Compile each generated file
319 var o
= f
.strip_extension
(".c") + ".o"
320 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
325 # Compile each required extern body into a specific .o
326 for f
in compiler
.extern_bodies
do
327 if f
isa ExternCFile then
328 var basename
= f
.filename
.basename
(".c")
329 var o
= "{basename}.extern.o"
330 var ff
= f
.filename
.basename
("")
331 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
335 var o
= f
.makefile_rule_name
336 var ff
= f
.filename
.basename
("")
337 makefile
.write
("{o}: {ff}\n")
338 makefile
.write
("\t{f.makefile_rule_content}\n")
339 dep_rules
.add
(f
.makefile_rule_name
)
341 if f
isa ExternCppFile then ofiles
.add
(o
)
346 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
348 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
350 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
353 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
355 var makename
= "{compiler.mainmodule.name}.mk" # FIXME duplicated from write_makefile
357 var makeflags
= self.toolcontext
.opt_make_flags
.value
358 if makeflags
== null then makeflags
= ""
359 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
362 if self.toolcontext
.verbose_level
>= 3 then
363 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
365 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
368 toolcontext
.error
(null, "make failed! Error code: {res}.")
373 # Singleton that store the knowledge about the compilation process
374 abstract class AbstractCompiler
375 type VISITOR: AbstractCompilerVisitor
377 # Table corresponding c_names to nit names (methods)
378 var names
= new HashMap[String, String]
380 # The main module of the program currently compiled
381 # Is assigned during the separate compilation
382 var mainmodule
: MModule writable
384 # The real main module of the program
385 var realmainmodule
: MModule
387 # The modeulbuilder used to know the model and the AST
388 var modelbuilder
: ModelBuilder protected writable
390 # Is hardening asked? (see --hardening)
391 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
393 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
395 self.mainmodule
= mainmodule
396 self.realmainmodule
= mainmodule
397 self.modelbuilder
= modelbuilder
400 # Force the creation of a new file
401 # The point is to avoid contamination between must-be-compiled-separately files
402 fun new_file
(name
: String): CodeFile
404 var f
= new CodeFile(name
)
409 # The list of all associated files
410 # Used to generate .c files
411 var files
: List[CodeFile] = new List[CodeFile]
413 # Initialize a visitor specific for a compiler engine
414 fun new_visitor
: VISITOR is abstract
416 # Where global declaration are stored (the main .h)
417 var header
: CodeWriter writable
419 # Provide a declaration that can be requested (before or latter) by a visitor
420 fun provide_declaration
(key
: String, s
: String)
422 if self.provided_declarations
.has_key
(key
) then
423 assert self.provided_declarations
[key
] == s
425 self.provided_declarations
[key
] = s
428 private var provided_declarations
= new HashMap[String, String]
430 private var requirers_of_declarations
= new HashMap[String, ANode]
432 # Builds the .c and .h files to be used when generating a Stack Trace
433 # Binds the generated C function names to Nit function names
434 fun build_c_to_nit_bindings
436 var compile_dir
= modelbuilder
.compile_dir
438 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
439 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
440 stream
.write
("%define lookup-function-name get_nit_name\n")
441 stream
.write
("struct C_Nit_Names;\n")
443 stream
.write
("####\n")
444 for i
in names
.keys
do
446 stream
.write
(",\t\"")
447 stream.write(names[i])
450 stream
.write
("####\n")
454 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
455 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
456 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
459 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
462 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
466 # This method call compile_header_strucs method that has to be refined
467 fun compile_header
do
469 var toolctx
= modelbuilder
.toolcontext
470 self.header
.add_decl
("#include <stdlib.h>")
471 self.header
.add_decl
("#include <stdio.h>")
472 self.header
.add_decl
("#include <string.h>")
473 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
475 compile_header_structs
476 compile_nitni_structs
478 # Signal handler function prototype
479 self.header
.add_decl
("void show_backtrace(int);")
481 # Global variable used by intern methods
482 self.header
.add_decl
("extern int glob_argc;")
483 self.header
.add_decl
("extern char **glob_argv;")
484 self.header
.add_decl
("extern val *glob_sys;")
487 # Declaration of structures for live Nit types
488 protected fun compile_header_structs
is abstract
490 # Declaration of structures for nitni undelying the FFI
491 protected fun compile_nitni_structs
is abstract
493 # Generate the main C function.
495 # * allocate the Sys object if it exists
496 # * call init if is exists
497 # * call main if it exists
498 fun compile_main_function
500 var v
= self.new_visitor
501 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
502 v
.add_decl
("#include \"c_functions_hash
.h\
"")
504 v
.add_decl
("#include <signal.h>")
505 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
506 v
.add_decl
("#define UNW_LOCAL_ONLY")
507 v
.add_decl
("#include <libunwind.h>")
509 v
.add_decl
("int glob_argc;")
510 v
.add_decl
("char **glob_argv;")
511 v
.add_decl
("val *glob_sys;")
513 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
514 for tag
in count_type_test_tags
do
515 v
.add_decl
("long count_type_test_resolved_{tag};")
516 v
.add_decl
("long count_type_test_unresolved_{tag};")
517 v
.add_decl
("long count_type_test_skipped_{tag};")
518 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
519 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
520 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
524 v
.add_decl
("void sig_handler(int signo)\{")
525 v
.add_decl
("printf(\"Caught signal
: %s\\n\
", strsignal(signo));")
526 v
.add_decl
("show_backtrace(signo);")
529 v
.add_decl
("void show_backtrace (int signo) \{")
530 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
531 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
532 v
.add_decl
("unw_cursor_t cursor;")
533 v
.add_decl
("if(opt==NULL)\{")
534 v
.add_decl
("unw_context_t uc;")
535 v
.add_decl
("unw_word_t ip;")
536 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
537 v
.add_decl
("unw_getcontext(&uc);")
538 v
.add_decl
("unw_init_local(&cursor, &uc);")
539 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
540 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
541 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
542 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
543 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
544 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
545 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
546 v
.add_decl
(" if (recv != 0)\{")
547 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
548 v.add_decl(" \}else\{")
549 v.add_decl(" printf(\"` %s\\n\
", procname);")
552 v
.add_decl
(" printf(\"` %s \\n\",procname);")
555 v.add_decl("printf(\"-------------------------------------------------\\n\");")
556 v.add_decl("free(procname);")
559 v.add_decl("exit(signo);")
562 v.add_decl("int main(int argc, char** argv) \{")
564 v.add("signal(SIGABRT, sig_handler);")
565 v.add("signal(SIGFPE, sig_handler);")
566 v.add("signal(SIGILL, sig_handler);")
567 v.add("signal(SIGINT, sig_handler);")
568 v.add("signal(SIGTERM, sig_handler);")
569 v.add("signal(SIGSEGV, sig_handler);")
571 v.add("glob_argc = argc; glob_argv = argv;")
572 v.add("initialize_gc_option();")
573 var main_type = mainmodule.sys_type
574 if main_type != null then
575 var mainmodule = v.compiler.mainmodule
576 var glob_sys = v.init_instance(main_type)
577 v.add("glob_sys = {glob_sys};")
578 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
579 if main_init != null then
580 v.send(main_init, [glob_sys])
582 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
583 if main_method != null then
584 v.send(main_method, [glob_sys])
588 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
589 v.add_decl("long count_type_test_resolved_total = 0;")
590 v.add_decl("long count_type_test_unresolved_total = 0;")
591 v.add_decl("long count_type_test_skipped_total = 0;")
592 v.add_decl("long count_type_test_total_total = 0;")
593 for tag in count_type_test_tags do
594 v.add_decl("long count_type_test_total_{tag};")
595 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
596 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
597 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
598 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
599 v.add("count_type_test_total_total += count_type_test_total_{tag};")
601 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
602 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
603 var tags = count_type_test_tags.to_a
606 v.add("printf(\"{tag}\");")
607 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
608 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
609 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
610 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
618 # List of additional files required to compile (FFI)
619 var extern_bodies = new Array[ExternFile]
621 # List of source files to copy over to the compile dir
622 var files_to_copy = new Array[String]
624 # This is used to avoid adding an extern file more than once
625 private var seen_extern = new ArraySet[String]
627 # Generate code that initialize the attributes on a new instance
628 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
630 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
631 self.mainmodule.linearize_mclassdefs(cds)
633 var n = self.modelbuilder.mclassdef2nclassdef[cd]
634 for npropdef in n.n_propdefs do
635 if npropdef isa AAttrPropdef then
636 npropdef.init_expr(v, recv)
642 # Generate code that check if an attribute is correctly initialized
643 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
645 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
646 self.mainmodule.linearize_mclassdefs(cds)
648 var n = self.modelbuilder.mclassdef2nclassdef[cd]
649 for npropdef in n.n_propdefs do
650 if npropdef isa AAttrPropdef then
651 npropdef.check_expr(v, recv)
659 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
660 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
661 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
662 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
664 protected fun init_count_type_test_tags: HashMap[String, Int]
666 var res = new HashMap[String, Int]
667 for tag in count_type_test_tags do
673 # Display stats about compilation process
675 # * type tests against resolved types (`x
isa Collection[Animal]`)
676 # * type tests against unresolved types (`x
isa Collection[E
]`)
677 # * type tests skipped
682 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
683 print "# static count_type_test"
684 print "\tresolved:\tunresolved\tskipped\ttotal"
685 var count_type_test_total = init_count_type_test_tags
686 count_type_test_resolved["total"] = 0
687 count_type_test_unresolved["total"] = 0
688 count_type_test_skipped["total"] = 0
689 count_type_test_total["total"] = 0
690 for tag in count_type_test_tags do
691 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
692 count_type_test_resolved["total"] += count_type_test_resolved[tag]
693 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
694 count_type_test_skipped["total"] += count_type_test_skipped[tag]
695 count_type_test_total["total"] += count_type_test_total[tag]
697 var count_type_test = count_type_test_total["total"]
698 var tags = count_type_test_tags.to_a
702 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
703 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
704 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
705 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
712 # Avoid division by zero by returning the string "n/a"
713 fun div(a,b:Int):String
715 if b == 0 then return "n/a"
716 return ((a*10000/b).to_f / 100.0).to_precision(2)
719 fun finalize_ffi_for_module(nmodule: AModule)
721 var visitor = new_visitor
722 nmodule.finalize_ffi(visitor, modelbuilder)
723 nmodule.finalize_nitni(visitor)
727 # A file unit (may be more than one file if
728 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
731 var writers = new Array[CodeWriter]
732 var required_declarations = new HashSet[String]
735 # Where to store generated lines
738 var lines: List[String] = new List[String]
739 var decl_lines: List[String] = new List[String]
741 # Add a line in the main part of the generated C
742 fun add(s: String) do self.lines.add(s)
745 # (used for local or global declaration)
746 fun add_decl(s: String) do self.decl_lines.add(s)
751 file.writers.add(self)
755 # A visitor on the AST of property definition that generate the C code.
756 abstract class AbstractCompilerVisitor
758 type COMPILER: AbstractCompiler
760 # The associated compiler
761 var compiler: COMPILER
763 # The current visited AST node
764 var current_node: nullable ANode writable = null
766 # The current `Frame`
767 var frame: nullable Frame writable
769 # Alias for self.compiler.mainmodule.object_type
770 fun object_type: MClassType do return self.compiler.mainmodule.object_type
772 # Alias for self.compiler.mainmodule.bool_type
773 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
775 var writer: CodeWriter
777 init(compiler: COMPILER)
779 self.compiler = compiler
780 self.writer = new CodeWriter(compiler.files.last)
783 # Force to get the primitive class named `name
` or abort
784 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
786 # Force to get the primitive property named `name
` in the instance `recv
` or abort
787 fun get_property(name: String, recv: MType): MMethod
789 assert recv isa MClassType
790 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
793 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
795 return self.send(callsite.mproperty, args)
798 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
800 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
802 # Transform varargs, in raw arguments, into a single argument of type `Array`
803 # Note: this method modify the given `args
`
804 # If there is no vararg, then `args
` is not modified.
805 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
807 var recv = args.first
808 var vararg_rank = msignature.vararg_rank
809 if vararg_rank >= 0 then
810 assert args.length >= msignature.arity + 1 # because of self
812 args = new Array[RuntimeVariable]
814 args.add(rawargs.first) # recv
816 for i in [0..vararg_rank[ do
817 args.add(rawargs[i+1])
820 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
821 var vararg = new Array[RuntimeVariable]
822 for i in [vararg_rank..vararg_lastrank] do
823 vararg.add(rawargs[i+1])
826 var elttype = msignature.mparameters[vararg_rank].mtype
827 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
829 for i in [vararg_lastrank+1..rawargs.length-1[ do
830 args.add(rawargs[i+1])
833 rawargs.add_all(args)
839 # Anchor a type to the main module and the current receiver
840 fun anchor(mtype: MType): MType
842 if not mtype.need_anchor then return mtype
843 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
846 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
848 if not mtype.need_anchor then return mtype
849 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
852 # Unsafely cast a value to a new type
853 # ie the result share the same C variable but my have a different mcasttype
854 # NOTE: if the adaptation is useless then `value
` is returned as it.
855 # ENSURE: `result
.name
== value
.name
`
856 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
858 mtype = self.anchor(mtype)
859 var valmtype = value.mcasttype
860 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
864 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
865 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
868 var res = new RuntimeVariable(value.name, valmtype, mtype)
873 # Generate a super call from a method definition
874 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
876 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
878 # Box or unbox a value to another type iff a C type conversion is needed
879 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
880 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
882 # Generate a polymorphic subtype test
883 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
885 # Generate the code required to dynamically check if 2 objects share the same runtime type
886 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
888 # Generate a Nit "is" for two runtime_variables
889 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
893 # Generate a static call on a method definition
894 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
896 # Generate a polymorphic send for the method `m
` and the arguments `args
`
897 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
899 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
900 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
902 assert t isa MClassType
903 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
904 return self.call(propdef, t, args)
907 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
908 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
910 assert t isa MClassType
911 m = m.lookup_next_definition(self.compiler.mainmodule, t)
912 return self.call(m, t, args)
915 # Attributes handling
917 # Generate a polymorphic attribute is_set test
918 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
920 # Generate a polymorphic attribute read
921 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
923 # Generate a polymorphic attribute write
924 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
928 # Add a check and an abort for a null reciever if needed
929 fun check_recv_notnull(recv: RuntimeVariable)
931 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
933 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
935 self.add("if ({recv} == NULL) \{")
936 self.add_abort("Receiver is null")
943 private var names: HashSet[String] = new HashSet[String]
944 private var last: Int = 0
946 # Return a new name based on `s
` and unique in the visitor
947 fun get_name(s: String): String
949 if not self.names.has(s) then
953 var i = self.last + 1
956 if not self.names.has(s2) then
965 # Return an unique and stable identifier associated with an escapemark
966 fun escapemark_name(e: nullable EscapeMark): String
969 if escapemark_names.has_key(e) then return escapemark_names[e]
971 if name == null then name = "label"
972 name = get_name(name)
973 escapemark_names[e] = name
977 private var escapemark_names = new HashMap[EscapeMark, String]
979 # Return a "const char*" variable associated to the classname of the dynamic type of an object
980 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
981 fun class_name_string(value: RuntimeVariable): String is abstract
985 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
987 # Return the local runtime_variable associated to a Nit local variable
988 fun variable(variable: Variable): RuntimeVariable
990 if self.variables.has_key(variable) then
991 return self.variables[variable]
993 var name = self.get_name("var_{variable.name}")
994 var mtype = variable.declared_type.as(not null)
995 mtype = self.anchor(mtype)
996 var res = new RuntimeVariable(name, mtype, mtype)
997 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
998 self.variables[variable] = res
1003 # Return a new uninitialized local runtime_variable
1004 fun new_var(mtype: MType): RuntimeVariable
1006 mtype = self.anchor(mtype)
1007 var name = self.get_name("var")
1008 var res = new RuntimeVariable(name, mtype, mtype)
1009 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1013 # Return a new uninitialized named runtime_variable
1014 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1016 mtype = self.anchor(mtype)
1017 var res = new RuntimeVariable(name, mtype, mtype)
1018 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1022 # Correctly assign a left and a right value
1023 # Boxing and unboxing is performed if required
1024 fun assign(left, right: RuntimeVariable)
1026 right = self.autobox(right, left.mtype)
1027 self.add("{left} = {right};")
1030 # Generate instances
1032 # Generate a alloc-instance + init-attributes
1033 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1035 # Generate an integer value
1036 fun int_instance(value: Int): RuntimeVariable
1038 var res = self.new_var(self.get_class("Int").mclass_type)
1039 self.add("{res} = {value};")
1043 # Generate a string value
1044 fun string_instance(string: String): RuntimeVariable
1046 var mtype = self.get_class("String").mclass_type
1047 var name = self.get_name("varonce")
1048 self.add_decl("static {mtype.ctype} {name};")
1049 var res = self.new_var(mtype)
1050 self.add("if ({name}) \{")
1051 self.add("{res} = {name};")
1052 self.add("\} else \{")
1053 var native_mtype = self.get_class("NativeString").mclass_type
1054 var nat = self.new_var(native_mtype)
1055 self.add("{nat} = \"{string.escape_to_c}\";")
1056 var length = self.int_instance(string.length)
1057 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1058 self.add("{name} = {res};")
1063 # Generate an array value
1064 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1066 # Get an instance of a array for a vararg
1067 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1071 # Add a line in the main part of the generated C
1072 fun add(s: String) do self.writer.lines.add(s)
1075 # (used for local or global declaration)
1076 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1078 # Request the presence of a global declaration
1079 fun require_declaration(key: String)
1081 var reqs = self.writer.file.required_declarations
1082 if reqs.has(key) then return
1084 var node = current_node
1085 if node != null then compiler.requirers_of_declarations[key] = node
1088 # Add a declaration in the local-header
1089 # The declaration is ensured to be present once
1090 fun declare_once(s: String)
1092 self.compiler.provide_declaration(s, s)
1093 self.require_declaration(s)
1096 # look for a needed .h and .c file for a given .nit source-file
1097 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1098 fun add_extern(file: String)
1100 file = file.strip_extension(".nit")
1101 var tryfile = file + ".nit.h"
1102 if tryfile.file_exists then
1103 self.declare_once("#include \"{tryfile.basename("")}\"")
1104 self.compiler.files_to_copy.add(tryfile)
1106 tryfile = file + "_nit.h"
1107 if tryfile.file_exists then
1108 self.declare_once("#include \"{tryfile.basename("")}\"")
1109 self.compiler.files_to_copy.add(tryfile)
1112 if self.compiler.seen_extern.has(file) then return
1113 self.compiler.seen_extern.add(file)
1114 tryfile = file + ".nit.c"
1115 if not tryfile.file_exists then
1116 tryfile = file + "_nit.c"
1117 if not tryfile.file_exists then return
1119 var f = new ExternCFile(tryfile.basename(""), "")
1120 self.compiler.extern_bodies.add(f)
1121 self.compiler.files_to_copy.add(tryfile)
1124 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1125 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1127 var res = new_var(mtype)
1128 self.add("{res} = {cexpr};")
1132 # Generate generic abort
1133 # used by aborts, asserts, casts, etc.
1134 fun add_abort(message: String)
1136 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1142 if self.current_node != null and self.current_node.location.file != null then
1143 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1145 self.add("fprintf(stderr, \"\\n\");")
1147 self.add("show_backtrace(1);")
1150 # Add a dynamic cast
1151 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1153 var res = self.type_test(value, mtype, tag)
1154 self.add("if (!{res}) \{")
1155 var cn = self.class_name_string(value)
1156 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1161 # Generate a return with the value `s
`
1162 fun ret(s: RuntimeVariable)
1164 self.assign(self.frame.returnvar.as(not null), s)
1165 self.add("goto {self.frame.returnlabel.as(not null)};")
1168 # Compile a statement (if any)
1169 fun stmt(nexpr: nullable AExpr)
1171 if nexpr == null then return
1172 var old = self.current_node
1173 self.current_node = nexpr
1175 self.current_node = old
1178 # Compile an expression an return its result
1179 # `mtype
` is the expected return type, pass null if no specific type is expected.
1180 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1182 var old = self.current_node
1183 self.current_node = nexpr
1184 var res = nexpr.expr(self).as(not null)
1185 if mtype != null then
1186 mtype = self.anchor(mtype)
1187 res = self.autobox(res, mtype)
1189 res = autoadapt(res, nexpr.mtype.as(not null))
1190 var implicit_cast_to = nexpr.implicit_cast_to
1191 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1192 add_cast(res, implicit_cast_to, "auto")
1193 res = autoadapt(res, implicit_cast_to)
1195 self.current_node = old
1199 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1200 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1202 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1203 fun debug(message: String)
1205 var node = self.current_node
1206 if node == null then
1207 print "?: {message}"
1211 self.add("/* DEBUG: {message} */")
1215 # A C function associated to a Nit method
1216 # Because of customization, a given Nit method can be compiler more that once
1217 abstract class AbstractRuntimeFunction
1219 type COMPILER: AbstractCompiler
1220 type VISITOR: AbstractCompilerVisitor
1222 # The associated Nit method
1223 var mmethoddef: MMethodDef
1225 # The mangled c name of the runtime_function
1226 # Subclasses should redefine `build_c_name
` instead
1229 var res = self.c_name_cache
1230 if res != null then return res
1231 res = self.build_c_name
1232 self.c_name_cache = res
1236 # Non cached version of `c_name
`
1237 protected fun build_c_name: String is abstract
1239 protected var c_name_cache: nullable String writable = null
1241 # Implements a call of the runtime_function
1242 # May inline the body or generate a C function call
1243 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1245 # Generate the code for the `AbstractRuntimeFunction`
1246 # Warning: compile more than once compilation makes CC unhappy
1247 fun compile_to_c(compiler: COMPILER) is abstract
1250 # A runtime variable hold a runtime value in C.
1251 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1253 # 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.
1254 class RuntimeVariable
1255 # The name of the variable in the C code
1258 # The static type of the variable (as declard in C)
1261 # The current casted type of the variable (as known in Nit)
1262 var mcasttype: MType writable
1264 # If the variable exaclty a mcasttype?
1265 # false (usual value) means that the variable is a mcasttype or a subtype.
1266 var is_exact: Bool writable = false
1268 init(name: String, mtype: MType, mcasttype: MType)
1272 self.mcasttype = mcasttype
1273 assert not mtype.need_anchor
1274 assert not mcasttype.need_anchor
1277 redef fun to_s do return name
1282 if self.is_exact then
1283 exact_str = " exact"
1288 if self.mtype == self.mcasttype then
1289 type_str = "{mtype}{exact_str}"
1291 type_str = "{mtype}({mcasttype}{exact_str})"
1293 return "<{name}:{type_str}>"
1297 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1300 type VISITOR: AbstractCompilerVisitor
1302 # The associated visitor
1303 var visitor: VISITOR
1305 # The executed property.
1306 # A Method in case of a call, an attribute in case of a default initialization.
1307 var mpropdef: MPropDef
1309 # The static type of the receiver
1310 var receiver: MClassType
1312 # Arguments of the method (the first is the receiver)
1313 var arguments: Array[RuntimeVariable]
1315 # The runtime_variable associated to the return (in a function)
1316 var returnvar: nullable RuntimeVariable writable = null
1318 # The label at the end of the property
1319 var returnlabel: nullable String writable = null
1323 # Return the C type associated to a given Nit static type
1324 fun ctype: String do return "val*"
1326 fun ctypename: String do return "val"
1328 # Return the name of the C structure associated to a Nit live type
1329 fun c_name: String is abstract
1330 protected var c_name_cache: nullable String protected writable
1333 redef class MClassType
1336 var res = self.c_name_cache
1337 if res != null then return res
1338 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1339 self.c_name_cache = res
1343 redef fun ctype: String
1345 if mclass.name == "Int" then
1347 else if mclass.name == "Bool" then
1349 else if mclass.name == "Char" then
1351 else if mclass.name == "Float" then
1353 else if mclass.name == "NativeString" then
1355 else if mclass.name == "NativeArray" then
1357 else if mclass.kind == extern_kind then
1364 redef fun ctypename: String
1366 if mclass.name == "Int" then
1368 else if mclass.name == "Bool" then
1370 else if mclass.name == "Char" then
1372 else if mclass.name == "Float" then
1374 else if mclass.name == "NativeString" then
1376 else if mclass.name == "NativeArray" then
1377 #return "{self.arguments.first.ctype}*"
1379 else if mclass.kind == extern_kind then
1387 redef class MGenericType
1390 var res = self.c_name_cache
1391 if res != null then return res
1393 for t in self.arguments do
1394 res = res + t.c_name
1396 self.c_name_cache = res
1401 redef class MParameterType
1404 var res = self.c_name_cache
1405 if res != null then return res
1406 res = "{self.mclass.c_name}_FT{self.rank}"
1407 self.c_name_cache = res
1412 redef class MVirtualType
1415 var res = self.c_name_cache
1416 if res != null then return res
1417 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1418 self.c_name_cache = res
1423 redef class MNullableType
1426 var res = self.c_name_cache
1427 if res != null then return res
1428 res = "nullable_{self.mtype.c_name}"
1429 self.c_name_cache = res
1435 # Return the name of the C structure associated to a Nit class
1436 fun c_name: String do
1437 var res = self.c_name_cache
1438 if res != null then return res
1439 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1440 self.c_name_cache = res
1443 private var c_name_cache: nullable String
1446 redef class MProperty
1447 fun c_name: String do
1448 var res = self.c_name_cache
1449 if res != null then return res
1450 res = "{self.intro.c_name}"
1451 self.c_name_cache = res
1454 private var c_name_cache: nullable String
1457 redef class MPropDef
1458 type VISITOR: AbstractCompilerVisitor
1460 private var c_name_cache: nullable String
1462 # The mangled name associated to the property
1465 var res = self.c_name_cache
1466 if res != null then return res
1467 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1468 self.c_name_cache = res
1473 redef class MMethodDef
1474 # Can the body be inlined?
1475 fun can_inline(v: VISITOR): Bool
1477 var modelbuilder = v.compiler.modelbuilder
1478 if modelbuilder.mpropdef2npropdef.has_key(self) then
1479 var npropdef = modelbuilder.mpropdef2npropdef[self]
1480 return npropdef.can_inline
1481 else if self.mproperty.name == "init" then
1482 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1489 # Inline the body in another visitor
1490 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1492 var modelbuilder = v.compiler.modelbuilder
1493 if modelbuilder.mpropdef2npropdef.has_key(self) then
1494 var npropdef = modelbuilder.mpropdef2npropdef[self]
1495 var oldnode = v.current_node
1496 v.current_node = npropdef
1497 self.compile_parameter_check(v, arguments)
1498 npropdef.compile_to_c(v, self, arguments)
1499 v.current_node = oldnode
1500 else if self.mproperty.name == "init" then
1501 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1502 var oldnode = v.current_node
1503 v.current_node = nclassdef
1504 self.compile_parameter_check(v, arguments)
1505 nclassdef.compile_to_c(v, self, arguments)
1506 v.current_node = oldnode
1513 # Generate type checks in the C code to check covariant parameters
1514 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1516 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1518 for i in [0..msignature.arity[ do
1519 # skip test for vararg since the array is instantiated with the correct polymorphic type
1520 if msignature.vararg_rank == i then continue
1522 # skip if the cast is not required
1523 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1524 if not origmtype.need_anchor then continue
1526 # get the parameter type
1527 var mtype = self.msignature.mparameters[i].mtype
1530 # note that v decides if and how to implements the cast
1531 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1532 v.add_cast(arguments[i+1], mtype, "covariance")
1539 redef class APropdef
1540 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1542 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1543 debug("Not yet implemented")
1546 fun can_inline: Bool do return true
1549 redef class AConcreteMethPropdef
1550 redef fun compile_to_c(v, mpropdef, arguments)
1552 for i in [0..mpropdef.msignature.arity[ do
1553 var variable = self.n_signature.n_params[i].variable.as(not null)
1554 v.assign(v.variable(variable), arguments[i+1])
1556 # Call the implicit super-init
1557 var auto_super_inits = self.auto_super_inits
1558 if auto_super_inits != null then
1559 var args = [arguments.first]
1560 for auto_super_init in auto_super_inits do
1562 for i in [0..auto_super_init.msignature.arity+1[ do
1563 args.add(arguments[i])
1565 v.compile_callsite(auto_super_init, args)
1568 v.stmt(self.n_block)
1571 redef fun can_inline
1573 if self.auto_super_inits != null then return false
1574 var nblock = self.n_block
1575 if nblock == null then return true
1576 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1577 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1582 redef class AInternMethPropdef
1583 redef fun compile_to_c(v, mpropdef, arguments)
1585 var pname = mpropdef.mproperty.name
1586 var cname = mpropdef.mclassdef.mclass.name
1587 var ret = mpropdef.msignature.return_mtype
1589 ret = v.resolve_for(ret, arguments.first)
1591 if pname != "==" and pname != "!=" then
1592 v.adapt_signature(mpropdef, arguments)
1594 if cname == "Int" then
1595 if pname == "output" then
1596 v.add("printf(\"%ld\\n\", {arguments.first});")
1598 else if pname == "object_id" then
1599 v.ret(arguments.first)
1601 else if pname == "+" then
1602 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1604 else if pname == "-" then
1605 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1607 else if pname == "unary -" then
1608 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1610 else if pname == "succ" then
1611 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1613 else if pname == "prec" then
1614 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1616 else if pname == "*" then
1617 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1619 else if pname == "/" then
1620 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1622 else if pname == "%" then
1623 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1625 else if pname == "lshift" then
1626 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1628 else if pname == "rshift" then
1629 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1631 else if pname == "==" then
1632 v.ret(v.equal_test(arguments[0], arguments[1]))
1634 else if pname == "!=" then
1635 var res = v.equal_test(arguments[0], arguments[1])
1636 v.ret(v.new_expr("!{res}", ret.as(not null)))
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 == "<=" then
1645 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", 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 == "to_f" then
1651 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1653 else if pname == "ascii" then
1654 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1657 else if cname == "Char" then
1658 if pname == "output" then
1659 v.add("printf(\"%c\", {arguments.first});")
1661 else if pname == "object_id" then
1662 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1664 else if pname == "+" then
1665 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1667 else if pname == "-" then
1668 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1670 else if pname == "==" then
1671 v.ret(v.equal_test(arguments[0], arguments[1]))
1673 else if pname == "!=" then
1674 var res = v.equal_test(arguments[0], arguments[1])
1675 v.ret(v.new_expr("!{res}", ret.as(not null)))
1677 else if pname == "succ" then
1678 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1680 else if pname == "prec" then
1681 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1683 else if pname == "<" then
1684 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1686 else if pname == ">" then
1687 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1689 else if pname == "<=" then
1690 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1692 else if pname == ">=" then
1693 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1695 else if pname == "to_i" then
1696 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1698 else if pname == "ascii" then
1699 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1702 else if cname == "Bool" then
1703 if pname == "output" then
1704 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1706 else if pname == "object_id" then
1707 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1709 else if pname == "==" then
1710 v.ret(v.equal_test(arguments[0], arguments[1]))
1712 else if pname == "!=" then
1713 var res = v.equal_test(arguments[0], arguments[1])
1714 v.ret(v.new_expr("!{res}", ret.as(not null)))
1717 else if cname == "Float" then
1718 if pname == "output" then
1719 v.add("printf(\"%f\\n\", {arguments.first});")
1721 else if pname == "object_id" then
1722 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1724 else if pname == "+" then
1725 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1727 else if pname == "-" then
1728 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1730 else if pname == "unary -" then
1731 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1733 else if pname == "succ" then
1734 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1736 else if pname == "prec" then
1737 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1739 else if pname == "*" then
1740 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1742 else if pname == "/" then
1743 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1745 else if pname == "==" then
1746 v.ret(v.equal_test(arguments[0], arguments[1]))
1748 else if pname == "!=" then
1749 var res = v.equal_test(arguments[0], arguments[1])
1750 v.ret(v.new_expr("!{res}", 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 == ">" then
1756 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1758 else if pname == "<=" then
1759 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1761 else if pname == ">=" then
1762 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1764 else if pname == "to_i" then
1765 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1768 else if cname == "NativeString" then
1769 if pname == "[]" then
1770 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1772 else if pname == "[]=" then
1773 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1775 else if pname == "copy_to" then
1776 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1778 else if pname == "atoi" then
1779 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1782 else if cname == "NativeArray" then
1783 v.native_array_def(pname, ret, arguments)
1786 if pname == "exit" then
1787 v.add("exit({arguments[1]});")
1789 else if pname == "sys" then
1790 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1792 else if pname == "calloc_string" then
1793 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1795 else if pname == "calloc_array" then
1796 v.calloc_array(ret.as(not null), arguments)
1798 else if pname == "object_id" then
1799 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1801 else if pname == "is_same_type" then
1802 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1804 else if pname == "is_same_instance" then
1805 v.ret(v.equal_test(arguments[0], arguments[1]))
1807 else if pname == "output_class_name" then
1808 var nat = v.class_name_string(arguments.first)
1809 v.add("printf(\"%s\\n\", {nat});")
1811 else if pname == "native_class_name" then
1812 var nat = v.class_name_string(arguments.first)
1813 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1815 else if pname == "force_garbage_collection" then
1816 v.add("nit_gcollect();")
1818 else if pname == "native_argc" then
1819 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1821 else if pname == "native_argv" then
1822 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1825 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1826 debug("Not implemented {mpropdef}")
1830 redef class AExternMethPropdef
1831 redef fun compile_to_c(v, mpropdef, arguments)
1834 var nextern = self.n_extern
1835 if nextern == null then
1836 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1837 v.add("show_backtrace(1);")
1840 externname = nextern.text.substring(1, nextern.text.length-2)
1841 if location.file != null then
1842 var file = location.file.filename
1845 var res: nullable RuntimeVariable = null
1846 var ret = mpropdef.msignature.return_mtype
1848 ret = v.resolve_for(ret, arguments.first)
1849 res = v.new_var(ret)
1851 v.adapt_signature(mpropdef, arguments)
1854 v.add("{externname}({arguments.join(", ")});")
1856 v.add("{res} = {externname}({arguments.join(", ")});")
1862 redef class AExternInitPropdef
1863 redef fun compile_to_c(v, mpropdef, arguments)
1866 var nextern = self.n_extern
1867 if nextern == null then
1868 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1869 v.add("show_backtrace(1);")
1872 externname = nextern.text.substring(1, nextern.text.length-2)
1873 if location.file != null then
1874 var file = location.file.filename
1877 v.adapt_signature(mpropdef, arguments)
1878 var ret = arguments.first.mtype
1879 var res = v.new_var(ret)
1883 v.add("{res} = {externname}({arguments.join(", ")});")
1888 redef class AAttrPropdef
1889 redef fun compile_to_c(v, mpropdef, arguments)
1891 if arguments.length == 1 then
1892 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1893 v.assign(v.frame.returnvar.as(not null), res)
1895 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1899 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1901 var nexpr = self.n_expr
1902 if nexpr != null then
1903 var oldnode = v.current_node
1904 v.current_node = self
1905 var old_frame = v.frame
1906 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1908 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1909 v.write_attribute(self.mpropdef.mproperty, recv, value)
1911 v.current_node = oldnode
1915 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1917 var nexpr = self.n_expr
1918 if nexpr != null then return
1920 var oldnode = v.current_node
1921 v.current_node = self
1922 var old_frame = v.frame
1923 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1925 # Force read to check the initialization
1926 v.read_attribute(self.mpropdef.mproperty, recv)
1928 v.current_node = oldnode
1932 redef class AClassdef
1933 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1935 if mpropdef == self.mfree_init then
1936 var super_inits = self.super_inits
1937 if super_inits != null then
1938 assert arguments.length == 1
1939 for su in super_inits do
1940 v.send(su, arguments)
1944 var recv = arguments.first
1946 # Collect undefined attributes
1947 for npropdef in self.n_propdefs do
1948 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1949 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1959 redef class ADeferredMethPropdef
1960 redef fun compile_to_c(v, mpropdef, arguments) do
1961 var cn = v.class_name_string(arguments.first)
1962 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1965 redef fun can_inline do return true
1969 # Try to compile self as an expression
1970 # Do not call this method directly, use `v
.expr
` instead
1971 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1973 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1974 var mtype = self.mtype
1975 if mtype == null then
1978 var res = v.new_var(mtype)
1979 v.add("/* {res} = NOT YET {class_name} */")
1984 # Try to compile self as a statement
1985 # Do not call this method directly, use `v
.stmt
` instead
1986 private fun stmt(v: AbstractCompilerVisitor)
1989 if res != null then v.add("{res};")
1993 redef class ABlockExpr
1996 for e in self.n_expr do v.stmt(e)
2000 var last = self.n_expr.last
2001 for e in self.n_expr do
2002 if e == last then break
2005 return v.expr(last, null)
2009 redef class AVardeclExpr
2012 var variable = self.variable.as(not null)
2013 var ne = self.n_expr
2015 var i = v.expr(ne, variable.declared_type)
2016 v.assign(v.variable(variable), i)
2021 redef class AVarExpr
2024 var res = v.variable(self.variable.as(not null))
2025 var mtype = self.mtype.as(not null)
2026 return v.autoadapt(res, mtype)
2030 redef class AVarAssignExpr
2033 var variable = self.variable.as(not null)
2034 var i = v.expr(self.n_value, variable.declared_type)
2035 v.assign(v.variable(variable), i)
2039 var variable = self.variable.as(not null)
2040 var i = v.expr(self.n_value, variable.declared_type)
2041 v.assign(v.variable(variable), i)
2046 redef class AVarReassignExpr
2049 var variable = self.variable.as(not null)
2050 var vari = v.variable(variable)
2051 var value = v.expr(self.n_value, variable.declared_type)
2052 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2054 v.assign(v.variable(variable), res)
2058 redef class ASelfExpr
2059 redef fun expr(v) do return v.frame.arguments.first
2062 redef class AContinueExpr
2063 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2066 redef class ABreakExpr
2067 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2070 redef class AReturnExpr
2073 var nexpr = self.n_expr
2074 if nexpr != null then
2075 var returnvar = v.frame.returnvar.as(not null)
2076 var i = v.expr(nexpr, returnvar.mtype)
2077 v.assign(returnvar, i)
2079 v.add("goto {v.frame.returnlabel.as(not null)};")
2083 redef class AAbortExpr
2084 redef fun stmt(v) do v.add_abort("Aborted")
2090 var cond = v.expr_bool(self.n_expr)
2091 v.add("if ({cond})\{")
2100 var res = v.new_var(self.mtype.as(not null))
2101 var cond = v.expr_bool(self.n_expr)
2102 v.add("if ({cond})\{")
2103 v.assign(res, v.expr(self.n_then.as(not null), null))
2105 v.assign(res, v.expr(self.n_else.as(not null), null))
2111 redef class AIfexprExpr
2114 var res = v.new_var(self.mtype.as(not null))
2115 var cond = v.expr_bool(self.n_expr)
2116 v.add("if ({cond})\{")
2117 v.assign(res, v.expr(self.n_then, null))
2119 v.assign(res, v.expr(self.n_else, null))
2128 v.stmt(self.n_block)
2129 var escapemark = self.escapemark
2130 if escapemark != null then
2131 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2136 redef class AWhileExpr
2140 var cond = v.expr_bool(self.n_expr)
2141 v.add("if (!{cond}) break;")
2142 v.stmt(self.n_block)
2143 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2145 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2149 redef class ALoopExpr
2153 v.stmt(self.n_block)
2154 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2156 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2160 redef class AForExpr
2163 # Shortcut on explicit range
2164 # Avoid the instantiation of the range and the iterator
2165 var nexpr = self.n_expr
2166 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2167 var from = v.expr(nexpr.n_expr, null)
2168 var to = v.expr(nexpr.n_expr2, null)
2169 var variable = v.variable(variables.first)
2171 v.assign(variable, from)
2172 v.add("for(;;) \{ /* shortcut range */")
2174 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2176 v.add("if(!{ok}) break;")
2178 v.stmt(self.n_block)
2180 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2181 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2183 v.assign(variable, succ)
2185 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2189 var cl = v.expr(self.n_expr, null)
2190 var it_meth = self.method_iterator
2191 assert it_meth != null
2192 var it = v.send(it_meth, [cl])
2195 var isok_meth = self.method_is_ok
2196 assert isok_meth != null
2197 var ok = v.send(isok_meth, [it])
2199 v.add("if(!{ok}) break;")
2200 if self.variables.length == 1 then
2201 var item_meth = self.method_item
2202 assert item_meth != null
2203 var i = v.send(item_meth, [it])
2205 v.assign(v.variable(variables.first), i)
2206 else if self.variables.length == 2 then
2207 var key_meth = self.method_key
2208 assert key_meth != null
2209 var i = v.send(key_meth, [it])
2211 v.assign(v.variable(variables[0]), i)
2212 var item_meth = self.method_item
2213 assert item_meth != null
2214 i = v.send(item_meth, [it])
2216 v.assign(v.variable(variables[1]), i)
2220 v.stmt(self.n_block)
2221 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2222 var next_meth = self.method_next
2223 assert next_meth != null
2224 v.send(next_meth, [it])
2226 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2230 redef class AAssertExpr
2233 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2235 var cond = v.expr_bool(self.n_expr)
2236 v.add("if (!{cond}) \{")
2240 v.add_abort("Assert '{nid.text}' failed")
2242 v.add_abort("Assert failed")
2251 var res = v.new_var(self.mtype.as(not null))
2252 var i1 = v.expr_bool(self.n_expr)
2253 v.add("if ({i1}) \{")
2256 var i2 = v.expr_bool(self.n_expr2)
2257 v.add("{res} = {i2};")
2263 redef class AImpliesExpr
2266 var res = v.new_var(self.mtype.as(not null))
2267 var i1 = v.expr_bool(self.n_expr)
2268 v.add("if (!{i1}) \{")
2271 var i2 = v.expr_bool(self.n_expr2)
2272 v.add("{res} = {i2};")
2278 redef class AAndExpr
2281 var res = v.new_var(self.mtype.as(not null))
2282 var i1 = v.expr_bool(self.n_expr)
2283 v.add("if (!{i1}) \{")
2286 var i2 = v.expr_bool(self.n_expr2)
2287 v.add("{res} = {i2};")
2293 redef class ANotExpr
2296 var cond = v.expr_bool(self.n_expr)
2297 return v.new_expr("!{cond}", self.mtype.as(not null))
2301 redef class AOrElseExpr
2304 var res = v.new_var(self.mtype.as(not null))
2305 var i1 = v.expr(self.n_expr, null)
2306 v.add("if ({i1}!=NULL) \{")
2309 var i2 = v.expr(self.n_expr2, null)
2316 redef class AIntExpr
2317 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2320 redef class AFloatExpr
2321 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2324 redef class ACharExpr
2325 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2328 redef class AArrayExpr
2331 var mtype = self.mtype.as(MClassType).arguments.first
2332 var array = new Array[RuntimeVariable]
2333 for nexpr in self.n_exprs.n_exprs do
2334 var i = v.expr(nexpr, mtype)
2337 return v.array_instance(array, mtype)
2341 redef class AStringFormExpr
2342 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2345 redef class ASuperstringExpr
2348 var array = new Array[RuntimeVariable]
2349 for ne in self.n_exprs do
2350 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2351 var i = v.expr(ne, null)
2354 var a = v.array_instance(array, v.object_type)
2355 var res = v.send(v.get_property("to_s", a.mtype), [a])
2360 redef class ACrangeExpr
2363 var i1 = v.expr(self.n_expr, null)
2364 var i2 = v.expr(self.n_expr2, null)
2365 var mtype = self.mtype.as(MClassType)
2366 var res = v.init_instance(mtype)
2367 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2372 redef class AOrangeExpr
2375 var i1 = v.expr(self.n_expr, null)
2376 var i2 = v.expr(self.n_expr2, null)
2377 var mtype = self.mtype.as(MClassType)
2378 var res = v.init_instance(mtype)
2379 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2384 redef class ATrueExpr
2385 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2388 redef class AFalseExpr
2389 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2392 redef class ANullExpr
2393 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2396 redef class AIsaExpr
2399 var i = v.expr(self.n_expr, null)
2400 return v.type_test(i, self.cast_type.as(not null), "isa")
2404 redef class AAsCastExpr
2407 var i = v.expr(self.n_expr, null)
2408 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2410 v.add_cast(i, self.mtype.as(not null), "as")
2415 redef class AAsNotnullExpr
2418 var i = v.expr(self.n_expr, null)
2419 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2421 v.add("if ({i} == NULL) \{")
2422 v.add_abort("Cast failed")
2428 redef class AParExpr
2429 redef fun expr(v) do return v.expr(self.n_expr, null)
2432 redef class AOnceExpr
2435 var mtype = self.mtype.as(not null)
2436 var name = v.get_name("varonce")
2437 var guard = v.get_name(name + "_guard")
2438 v.add_decl("static {mtype.ctype} {name};")
2439 v.add_decl("static int {guard};")
2440 var res = v.new_var(mtype)
2441 v.add("if ({guard}) \{")
2442 v.add("{res} = {name};")
2444 var i = v.expr(self.n_expr, mtype)
2445 v.add("{res} = {i};")
2446 v.add("{name} = {res};")
2447 v.add("{guard} = 1;")
2453 redef class ASendExpr
2456 var recv = v.expr(self.n_expr, null)
2458 for a in self.raw_arguments.as(not null) do
2459 args.add(v.expr(a, null))
2461 return v.compile_callsite(self.callsite.as(not null), args)
2465 redef class ASendReassignFormExpr
2468 var recv = v.expr(self.n_expr, null)
2470 for a in self.raw_arguments.as(not null) do
2471 args.add(v.expr(a, null))
2473 var value = v.expr(self.n_value, null)
2475 var left = v.compile_callsite(self.callsite.as(not null), args)
2478 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2482 v.compile_callsite(self.write_callsite.as(not null), args)
2486 redef class ASuperExpr
2489 var recv = v.frame.arguments.first
2491 for a in self.n_args.n_exprs do
2492 args.add(v.expr(a, null))
2495 var callsite = self.callsite
2496 if callsite != null then
2497 # Add additionnals arguments for the super init call
2498 if args.length == 1 then
2499 for i in [0..callsite.mproperty.intro.msignature.arity[ do
2500 args.add(v.frame.arguments[i+1])
2504 var res = v.compile_callsite(callsite, args)
2508 if args.length == 1 then
2509 args = v.frame.arguments
2512 # stantard call-next-method
2513 return v.supercall(mpropdef.as(not null), recv.mtype.as(MClassType), args)
2517 redef class ANewExpr
2520 var mtype = self.mtype.as(MClassType)
2522 var ctype = mtype.ctype
2523 if ctype == "val*" then
2524 recv = v.init_instance(mtype)
2525 else if ctype == "void*" then
2526 recv = v.new_expr("NULL/*special!*/", mtype)
2528 debug("cannot new {mtype}")
2532 for a in self.n_args.n_exprs do
2533 args.add(v.expr(a, null))
2535 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2536 if res2 != null then
2537 #self.debug("got {res2} from {mproperty}. drop {recv}")
2544 redef class AAttrExpr
2547 var recv = v.expr(self.n_expr, null)
2548 var mproperty = self.mproperty.as(not null)
2549 return v.read_attribute(mproperty, recv)
2553 redef class AAttrAssignExpr
2556 var recv = v.expr(self.n_expr, null)
2557 var i = v.expr(self.n_value, null)
2558 var mproperty = self.mproperty.as(not null)
2559 v.write_attribute(mproperty, recv, i)
2563 redef class AAttrReassignExpr
2566 var recv = v.expr(self.n_expr, null)
2567 var value = v.expr(self.n_value, null)
2568 var mproperty = self.mproperty.as(not null)
2569 var attr = v.read_attribute(mproperty, recv)
2570 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2572 v.write_attribute(mproperty, recv, res)
2576 redef class AIssetAttrExpr
2579 var recv = v.expr(self.n_expr, null)
2580 var mproperty = self.mproperty.as(not null)
2581 return v.isset_attribute(mproperty, recv)
2585 redef class ADebugTypeExpr
2594 redef class Array[E]
2595 # Return a new `Array` with the elements only contened in self and not in `o
`
2596 fun -(o: Array[E]): Array[E] do
2597 var res = new Array[E]
2598 for e in self do if not o.has(e) then res.add(e)
2604 # All `MProperty` associated to all `MClassDef` of `mclass
`
2605 fun properties(mclass: MClass): Set[MProperty] do
2606 if not self.properties_cache.has_key(mclass) then
2607 var properties = new HashSet[MProperty]
2608 var parents = new Array[MClass]
2609 if self.flatten_mclass_hierarchy.has(mclass) then
2610 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2612 for parent in parents do
2613 properties.add_all(self.properties(parent))
2615 for mclassdef in mclass.mclassdefs do
2616 for mprop in mclassdef.intro_mproperties do
2617 properties.add(mprop)
2620 self.properties_cache[mclass] = properties
2622 return properties_cache[mclass]
2624 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2628 # Does this module use the legacy native interface?
2629 fun uses_legacy_ni: Bool is abstract
2631 # Write FFI results to file
2632 fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
2634 # Write nitni results to file
2635 fun finalize_nitni(v: AbstractCompilerVisitor) is abstract