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
26 # Add compiling options
27 redef class ToolContext
29 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
31 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
33 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
35 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
37 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
39 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
41 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
42 # --no-check-covariance
43 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
44 # --no-check-initialization
45 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
47 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
49 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
51 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
52 # --typing-test-metrics
53 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
55 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")
56 # --stack-trace-C-to-Nit-name-binding
57 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")
62 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
)
63 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
)
64 self.option_context
.add_option
(self.opt_typing_test_metrics
)
65 self.option_context
.add_option
(self.opt_stacktrace
)
66 self.option_context
.add_option
(self.opt_no_stacktrace
)
70 redef class ModelBuilder
71 # The list of directories to search for included C headers (-I for C compilers)
72 # The list is initially set with :
73 # * the toolcontext --cc-path option
74 # * the NIT_CC_PATH environment variable
75 # * some heuristics including the NIT_DIR environment variable and the progname of the process
76 # Path can be added (or removed) by the client
77 var cc_paths
= new Array[String]
79 redef init(model
, toolcontext
)
83 # Look for the the Nit clib path
84 var path_env
= "NIT_DIR".environ
85 if not path_env
.is_empty
then
86 var libname
= "{path_env}/clib"
87 if libname
.file_exists
then cc_paths
.add
(libname
)
90 var libname
= "{sys.program_name.dirname}/../clib"
91 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
93 if cc_paths
.is_empty
then
94 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
97 if toolcontext
.opt_no_stacktrace
.value
and toolcontext
.opt_stacktrace
.value
then
98 print
"Cannot use --nit-stacktrace when --no-stacktrace is activated"
102 # Add user defined cc_paths
103 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
105 path_env
= "NIT_CC_PATH".environ
106 if not path_env
.is_empty
then
107 cc_paths
.append
(path_env
.split_with
(':'))
110 var compile_dir
= toolcontext
.opt_compile_dir
.value
111 if compile_dir
== null then compile_dir
= ".nit_compile"
112 self.compile_dir
= compile_dir
115 # The compilation directory
116 var compile_dir
: String
118 protected fun write_and_make
(compiler
: AbstractCompiler)
120 var mainmodule
= compiler
.mainmodule
122 # Generate the .h and .c files
123 # A single C file regroups many compiled rumtime functions
124 # 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
126 self.toolcontext
.info
("*** WRITING C ***", 1)
130 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
132 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
134 var outname
= self.toolcontext
.opt_output
.value
135 if outname
== null then
136 outname
= "{mainmodule.name}"
138 var outpath
= orig_dir
.join_path
(outname
).simplify_path
140 var hfilename
= compiler
.header
.file
.name
+ ".h"
141 var hfilepath
= "{compile_dir}/{hfilename}"
142 var h
= new OFStream.open
(hfilepath
)
143 for l
in compiler
.header
.decl_lines
do
147 for l
in compiler
.header
.lines
do
153 var cfiles
= new Array[String]
155 for f
in compiler
.files
do
157 var hfile
: nullable OFStream = null
159 var cfilename
= "{f.name}.0.h"
160 var cfilepath
= "{compile_dir}/{cfilename}"
161 hfile
= new OFStream.open
(cfilepath
)
162 hfile
.write
"#include \"{hfilename}\
"\n"
163 for key
in f
.required_declarations
do
164 if not compiler
.provided_declarations
.has_key
(key
) then
165 print
"No provided declaration for {key}"
168 hfile
.write compiler
.provided_declarations
[key
]
172 var file
: nullable OFStream = null
173 for vis
in f
.writers
do
174 if vis
== compiler
.header
then continue
175 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
176 if total_lines
== 0 then continue
178 if file
== null or count
> 10000 then
180 if file
!= null then file
.close
181 cfilename
= "{f.name}.{i}.c"
182 cfilepath
= "{compile_dir}/{cfilename}"
183 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
184 cfiles
.add
(cfilename
)
185 file
= new OFStream.open
(cfilepath
)
186 file
.write
"#include \"{f.name}.0.h\
"\n"
189 for l
in vis
.decl_lines
do
193 for l
in vis
.lines
do
198 if file
!= null then file
.close
201 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
204 for m
in mainmodule
.in_importation
.greaters
do if mmodule2nmodule
.keys
.has
(m
) then
205 var amodule
= mmodule2nmodule
[m
]
206 if m
.uses_ffi
or amodule
.uses_legacy_ni
then
207 compiler
.finalize_ffi_for_module
(amodule
)
211 # Generate the Makefile
213 var makename
= "{mainmodule.name}.mk"
214 var makepath
= "{compile_dir}/{makename}"
215 var makefile
= new OFStream.open
(makepath
)
219 p
= orig_dir
.join_path
(p
).simplify_path
220 cc_includes
+= " -I \"" + p + "\
""
223 var linker_options
= new HashSet[String]
224 for m
in mainmodule
.in_importation
.greaters
do if mmodule2nmodule
.keys
.has
(m
) then
225 var amod
= mmodule2nmodule
[m
]
226 linker_options
.add
(amod
.c_linker_options
)
229 if not toolcontext
.opt_no_stacktrace
.value
then
230 linker_options
.add
("-lunwind")
233 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
234 makefile
.write
("all: {outpath}\n\n")
236 var ofiles
= new Array[String]
237 # Compile each generated file
239 var o
= f
.strip_extension
(".c") + ".o"
240 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
244 # Add gc_choser.h to aditionnal bodies
245 var gc_chooser
= new ExternCFile("{cc_paths.first}/gc_chooser.c", "-DWITH_LIBGC")
246 compiler
.extern_bodies
.add
(gc_chooser
)
248 # Compile each required extern body into a specific .o
249 for f
in compiler
.extern_bodies
do
250 if f
isa ExternCFile then
251 var basename
= f
.filename
.basename
(".c")
252 var o
= "{basename}.extern.o"
253 var ff
= orig_dir
.join_path
(f
.filename
).simplify_path
254 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
260 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
262 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
264 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
267 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
269 # Execute the Makefile
271 if self.toolcontext
.opt_no_cc
.value
then return
274 self.toolcontext
.info
("*** COMPILING C ***", 1)
275 var makeflags
= self.toolcontext
.opt_make_flags
.value
276 if makeflags
== null then makeflags
= ""
277 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
280 if self.toolcontext
.verbose_level
>= 3 then
281 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
283 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
286 toolcontext
.error
(null, "make failed! Error code: {res}.")
290 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
294 # Singleton that store the knowledge about the compilation process
295 abstract class AbstractCompiler
296 type VISITOR: AbstractCompilerVisitor
298 # Table corresponding c_names to nit names (methods)
299 var names
= new HashMap[String, String]
301 # The main module of the program currently compiled
302 # Is assigned during the separate compilation
303 var mainmodule
: MModule writable
305 # The real main module of the program
306 var realmainmodule
: MModule
308 # The modeulbuilder used to know the model and the AST
309 var modelbuilder
: ModelBuilder protected writable
311 # Is hardening asked? (see --hardening)
312 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
314 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
316 self.mainmodule
= mainmodule
317 self.realmainmodule
= mainmodule
318 self.modelbuilder
= modelbuilder
321 # Force the creation of a new file
322 # The point is to avoid contamination between must-be-compiled-separately files
323 fun new_file
(name
: String): CodeFile
325 var f
= new CodeFile(name
)
330 # The list of all associated files
331 # Used to generate .c files
332 var files
: List[CodeFile] = new List[CodeFile]
334 # Initialize a visitor specific for a compiler engine
335 fun new_visitor
: VISITOR is abstract
337 # Where global declaration are stored (the main .h)
338 var header
: CodeWriter writable
340 # Provide a declaration that can be requested (before or latter) by a visitor
341 fun provide_declaration
(key
: String, s
: String)
343 if self.provided_declarations
.has_key
(key
) then
344 assert self.provided_declarations
[key
] == s
346 self.provided_declarations
[key
] = s
349 private var provided_declarations
= new HashMap[String, String]
351 # Builds the .c and .h files to be used when generating a Stack Trace
352 # Binds the generated C function names to Nit function names
353 fun build_c_to_nit_bindings
355 var compile_dir
= modelbuilder
.compile_dir
357 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
358 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
359 stream
.write
("%define lookup-function-name get_nit_name\n")
360 stream
.write
("struct C_Nit_Names;\n")
362 stream
.write
("####\n")
363 for i
in names
.keys
do
365 stream
.write
(",\t\"")
366 stream.write(names[i])
369 stream
.write
("####\n")
373 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
374 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
375 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
378 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
381 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
385 # This method call compile_header_strucs method that has to be refined
386 fun compile_header
do
388 var toolctx
= modelbuilder
.toolcontext
389 self.header
.add_decl
("#include <stdlib.h>")
390 self.header
.add_decl
("#include <stdio.h>")
391 self.header
.add_decl
("#include <string.h>")
392 self.header
.add_decl
("#include <gc_chooser.h>")
394 compile_header_structs
395 compile_nitni_structs
397 # Signal handler function prototype
398 self.header
.add_decl
("void show_backtrace(int);")
400 # Global variable used by intern methods
401 self.header
.add_decl
("extern int glob_argc;")
402 self.header
.add_decl
("extern char **glob_argv;")
403 self.header
.add_decl
("extern val *glob_sys;")
406 # Declaration of structures for live Nit types
407 protected fun compile_header_structs
is abstract
409 # Declaration of structures for nitni undelying the FFI
410 protected fun compile_nitni_structs
is abstract
412 # Generate the main C function.
414 # * allocate the Sys object if it exists
415 # * call init if is exists
416 # * call main if it exists
417 fun compile_main_function
419 var v
= self.new_visitor
420 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
421 v
.add_decl
("#include \"c_functions_hash
.h\
"")
423 v
.add_decl
("#include <signal.h>")
424 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
425 v
.add_decl
("#define UNW_LOCAL_ONLY")
426 v
.add_decl
("#include <libunwind.h>")
428 v
.add_decl
("int glob_argc;")
429 v
.add_decl
("char **glob_argv;")
430 v
.add_decl
("val *glob_sys;")
432 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
433 for tag
in count_type_test_tags
do
434 v
.add_decl
("long count_type_test_resolved_{tag};")
435 v
.add_decl
("long count_type_test_unresolved_{tag};")
436 v
.add_decl
("long count_type_test_skipped_{tag};")
437 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
438 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
439 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
443 v
.add_decl
("void show_backtrace (int signo) \{")
444 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
445 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
446 v
.add_decl
("unw_cursor_t cursor;")
447 v
.add_decl
("if(opt==NULL)\{")
448 v
.add_decl
("unw_context_t uc;")
449 v
.add_decl
("unw_word_t ip;")
450 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
451 v
.add_decl
("unw_getcontext(&uc);")
452 v
.add_decl
("unw_init_local(&cursor, &uc);")
453 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
454 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
455 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
456 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
457 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
458 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
459 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
460 v
.add_decl
(" if (recv != 0)\{")
461 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
462 v.add_decl(" \}else\{")
463 v.add_decl(" printf(\"` %s\\n\
", procname);")
466 v
.add_decl
(" printf(\"` %s \\n\",procname);")
469 v.add_decl("printf(\"-------------------------------------------------\\n\");")
470 v.add_decl("free(procname);")
473 v.add_decl("exit(signo);")
476 v.add_decl("int main(int argc, char** argv) \{")
478 v.add("signal(SIGABRT, show_backtrace);")
479 v.add("signal(SIGFPE, show_backtrace);")
480 v.add("signal(SIGILL, show_backtrace);")
481 v.add("signal(SIGINT, show_backtrace);")
482 v.add("signal(SIGTERM, show_backtrace);")
483 v.add("signal(SIGSEGV, show_backtrace);")
485 v.add("glob_argc = argc; glob_argv = argv;")
486 v.add("initialize_gc_option();")
487 var main_type = mainmodule.sys_type
488 if main_type != null then
489 var mainmodule = v.compiler.mainmodule
490 var glob_sys = v.init_instance(main_type)
491 v.add("glob_sys = {glob_sys};")
492 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
493 if main_init != null then
494 v.send(main_init, [glob_sys])
496 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
497 if main_method != null then
498 v.send(main_method, [glob_sys])
502 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
503 v.add_decl("long count_type_test_resolved_total = 0;")
504 v.add_decl("long count_type_test_unresolved_total = 0;")
505 v.add_decl("long count_type_test_skipped_total = 0;")
506 v.add_decl("long count_type_test_total_total = 0;")
507 for tag in count_type_test_tags do
508 v.add_decl("long count_type_test_total_{tag};")
509 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
510 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
511 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
512 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
513 v.add("count_type_test_total_total += count_type_test_total_{tag};")
515 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
516 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
517 var tags = count_type_test_tags.to_a
520 v.add("printf(\"{tag}\");")
521 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
522 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
523 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
524 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
532 # List of additional files required to compile (FFI)
533 var extern_bodies = new Array[ExternFile]
535 # This is used to avoid adding an extern file more than once
536 private var seen_extern = new ArraySet[String]
538 # Generate code that initialize the attributes on a new instance
539 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
541 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
542 self.mainmodule.linearize_mclassdefs(cds)
544 var n = self.modelbuilder.mclassdef2nclassdef[cd]
545 for npropdef in n.n_propdefs do
546 if npropdef isa AAttrPropdef then
547 npropdef.init_expr(v, recv)
553 # Generate code that check if an attribute is correctly initialized
554 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
556 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
557 self.mainmodule.linearize_mclassdefs(cds)
559 var n = self.modelbuilder.mclassdef2nclassdef[cd]
560 for npropdef in n.n_propdefs do
561 if npropdef isa AAttrPropdef then
562 npropdef.check_expr(v, recv)
570 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
571 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
572 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
573 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
575 protected fun init_count_type_test_tags: HashMap[String, Int]
577 var res = new HashMap[String, Int]
578 for tag in count_type_test_tags do
584 # Display stats about compilation process
586 # * type tests against resolved types (`x
isa Collection[Animal]`)
587 # * type tests against unresolved types (`x
isa Collection[E
]`)
588 # * type tests skipped
593 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
594 print "# static count_type_test"
595 print "\tresolved:\tunresolved\tskipped\ttotal"
596 var count_type_test_total = init_count_type_test_tags
597 count_type_test_resolved["total"] = 0
598 count_type_test_unresolved["total"] = 0
599 count_type_test_skipped["total"] = 0
600 count_type_test_total["total"] = 0
601 for tag in count_type_test_tags do
602 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
603 count_type_test_resolved["total"] += count_type_test_resolved[tag]
604 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
605 count_type_test_skipped["total"] += count_type_test_skipped[tag]
606 count_type_test_total["total"] += count_type_test_total[tag]
608 var count_type_test = count_type_test_total["total"]
609 var tags = count_type_test_tags.to_a
613 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
614 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
615 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
616 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
623 # Avoid division by zero by returning the string "n/a"
624 fun div(a,b:Int):String
626 if b == 0 then return "n/a"
627 return ((a*10000/b).to_f / 100.0).to_precision(2)
630 fun finalize_ffi_for_module(nmodule: AModule)
632 var visitor = new_visitor
633 nmodule.finalize_ffi(visitor, modelbuilder)
634 nmodule.finalize_nitni(visitor)
637 # Does this compiler support the FFI?
638 fun supports_ffi: Bool do return false
641 # A file unit (may be more than one file if
642 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
645 var writers = new Array[CodeWriter]
646 var required_declarations = new HashSet[String]
649 # Where to store generated lines
652 var lines: List[String] = new List[String]
653 var decl_lines: List[String] = new List[String]
655 # Add a line in the main part of the generated C
656 fun add(s: String) do self.lines.add(s)
659 # (used for local or global declaration)
660 fun add_decl(s: String) do self.decl_lines.add(s)
665 file.writers.add(self)
669 # A visitor on the AST of property definition that generate the C code.
670 abstract class AbstractCompilerVisitor
672 type COMPILER: AbstractCompiler
674 # The associated compiler
675 var compiler: COMPILER
677 # The current visited AST node
678 var current_node: nullable ANode writable = null
680 # The current `Frame`
681 var frame: nullable Frame writable
683 # Alias for self.compiler.mainmodule.object_type
684 fun object_type: MClassType do return self.compiler.mainmodule.object_type
686 # Alias for self.compiler.mainmodule.bool_type
687 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
689 var writer: CodeWriter
691 init(compiler: COMPILER)
693 self.compiler = compiler
694 self.writer = new CodeWriter(compiler.files.last)
697 # Force to get the primitive class named `name
` or abort
698 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
700 # Force to get the primitive property named `name
` in the instance `recv
` or abort
701 fun get_property(name: String, recv: MType): MMethod
703 assert recv isa MClassType
704 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
707 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
709 return self.send(callsite.mproperty, args)
712 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
714 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
716 # Transform varargs, in raw arguments, into a single argument of type `Array`
717 # Note: this method modify the given `args
`
718 # If there is no vararg, then `args
` is not modified.
719 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
721 var recv = args.first
722 var vararg_rank = msignature.vararg_rank
723 if vararg_rank >= 0 then
724 assert args.length >= msignature.arity + 1 # because of self
726 args = new Array[RuntimeVariable]
728 args.add(rawargs.first) # recv
730 for i in [0..vararg_rank[ do
731 args.add(rawargs[i+1])
734 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
735 var vararg = new Array[RuntimeVariable]
736 for i in [vararg_rank..vararg_lastrank] do
737 vararg.add(rawargs[i+1])
740 var elttype = msignature.mparameters[vararg_rank].mtype
741 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
743 for i in [vararg_lastrank+1..rawargs.length-1[ do
744 args.add(rawargs[i+1])
747 rawargs.add_all(args)
753 # Anchor a type to the main module and the current receiver
754 fun anchor(mtype: MType): MType
756 if not mtype.need_anchor then return mtype
757 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
760 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
762 if not mtype.need_anchor then return mtype
763 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
766 # Unsafely cast a value to a new type
767 # ie the result share the same C variable but my have a different mcasttype
768 # NOTE: if the adaptation is useless then `value
` is returned as it.
769 # ENSURE: `result
.name
== value
.name
`
770 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
772 mtype = self.anchor(mtype)
773 var valmtype = value.mcasttype
774 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
778 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
779 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
782 var res = new RuntimeVariable(value.name, valmtype, mtype)
787 # Generate a super call from a method definition
788 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
790 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
792 # Box or unbox a value to another type iff a C type conversion is needed
793 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
794 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
796 # Generate a polymorphic subtype test
797 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
799 # Generate the code required to dynamically check if 2 objects share the same runtime type
800 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
802 # Generate a Nit "is" for two runtime_variables
803 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
807 # Generate a static call on a method definition
808 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
810 # Generate a polymorphic send for the method `m
` and the arguments `args
`
811 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
813 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
814 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
816 assert t isa MClassType
817 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
818 return self.call(propdef, t, args)
821 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
822 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
824 assert t isa MClassType
825 m = m.lookup_next_definition(self.compiler.mainmodule, t)
826 return self.call(m, t, args)
829 # Attributes handling
831 # Generate a polymorphic attribute is_set test
832 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
834 # Generate a polymorphic attribute read
835 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
837 # Generate a polymorphic attribute write
838 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
842 # Add a check and an abort for a null reciever if needed
843 fun check_recv_notnull(recv: RuntimeVariable)
845 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
847 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
849 self.add("if ({recv} == NULL) \{")
850 self.add_abort("Reciever is null")
857 private var names: HashSet[String] = new HashSet[String]
858 private var last: Int = 0
860 # Return a new name based on `s
` and unique in the visitor
861 fun get_name(s: String): String
863 if not self.names.has(s) then
867 var i = self.last + 1
870 if not self.names.has(s2) then
879 # Return an unique and stable identifier associated with an escapemark
880 fun escapemark_name(e: nullable EscapeMark): String
883 if escapemark_names.has_key(e) then return escapemark_names[e]
885 if name == null then name = "label"
886 name = get_name(name)
887 escapemark_names[e] = name
891 private var escapemark_names = new HashMap[EscapeMark, String]
893 # Return a "const char*" variable associated to the classname of the dynamic type of an object
894 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
895 fun class_name_string(value: RuntimeVariable): String is abstract
899 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
901 # Return the local runtime_variable associated to a Nit local variable
902 fun variable(variable: Variable): RuntimeVariable
904 if self.variables.has_key(variable) then
905 return self.variables[variable]
907 var name = self.get_name("var_{variable.name}")
908 var mtype = variable.declared_type.as(not null)
909 mtype = self.anchor(mtype)
910 var res = new RuntimeVariable(name, mtype, mtype)
911 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
912 self.variables[variable] = res
917 # Return a new uninitialized local runtime_variable
918 fun new_var(mtype: MType): RuntimeVariable
920 mtype = self.anchor(mtype)
921 var name = self.get_name("var")
922 var res = new RuntimeVariable(name, mtype, mtype)
923 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
927 # Return a new uninitialized named runtime_variable
928 fun new_named_var(mtype: MType, name: String): RuntimeVariable
930 mtype = self.anchor(mtype)
931 var res = new RuntimeVariable(name, mtype, mtype)
932 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
936 # Correctly assign a left and a right value
937 # Boxing and unboxing is performed if required
938 fun assign(left, right: RuntimeVariable)
940 right = self.autobox(right, left.mtype)
941 self.add("{left} = {right};")
946 # Generate a alloc-instance + init-attributes
947 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
949 # Generate an integer value
950 fun int_instance(value: Int): RuntimeVariable
952 var res = self.new_var(self.get_class("Int").mclass_type)
953 self.add("{res} = {value};")
957 # Generate a string value
958 fun string_instance(string: String): RuntimeVariable
960 var mtype = self.get_class("String").mclass_type
961 var name = self.get_name("varonce")
962 self.add_decl("static {mtype.ctype} {name};")
963 var res = self.new_var(mtype)
964 self.add("if ({name}) \{")
965 self.add("{res} = {name};")
966 self.add("\} else \{")
967 var native_mtype = self.get_class("NativeString").mclass_type
968 var nat = self.new_var(native_mtype)
969 self.add("{nat} = \"{string.escape_to_c}\";")
970 var length = self.int_instance(string.length)
971 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
972 self.add("{name} = {res};")
977 # Generate an array value
978 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
980 # Get an instance of a array for a vararg
981 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
985 # Add a line in the main part of the generated C
986 fun add(s: String) do self.writer.lines.add(s)
989 # (used for local or global declaration)
990 fun add_decl(s: String) do self.writer.decl_lines.add(s)
992 # Request the presence of a global declaration
993 fun require_declaration(key: String)
995 self.writer.file.required_declarations.add(key)
998 # Add a declaration in the local-header
999 # The declaration is ensured to be present once
1000 fun declare_once(s: String)
1002 self.compiler.provide_declaration(s, s)
1003 self.require_declaration(s)
1006 # look for a needed .h and .c file for a given .nit source-file
1007 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1008 fun add_extern(file: String)
1010 file = file.strip_extension(".nit")
1011 var tryfile = file + ".nit.h"
1012 if tryfile.file_exists then
1013 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
1015 tryfile = file + "_nit.h"
1016 if tryfile.file_exists then
1017 self.declare_once("#include \"{"..".join_path(tryfile)}\"")
1020 if self.compiler.seen_extern.has(file) then return
1021 self.compiler.seen_extern.add(file)
1022 tryfile = file + ".nit.c"
1023 if not tryfile.file_exists then
1024 tryfile = file + "_nit.c"
1025 if not tryfile.file_exists then return
1027 var f = new ExternCFile(tryfile, "")
1028 self.compiler.extern_bodies.add(f)
1031 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1032 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1034 var res = new_var(mtype)
1035 self.add("{res} = {cexpr};")
1039 # Generate generic abort
1040 # used by aborts, asserts, casts, etc.
1041 fun add_abort(message: String)
1043 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1049 if self.current_node != null and self.current_node.location.file != null then
1050 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1052 self.add("fprintf(stderr, \"\\n\");")
1054 self.add("show_backtrace(1);")
1057 # Add a dynamic cast
1058 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1060 var res = self.type_test(value, mtype, tag)
1061 self.add("if (!{res}) \{")
1062 var cn = self.class_name_string(value)
1063 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1068 # Generate a return with the value `s
`
1069 fun ret(s: RuntimeVariable)
1071 self.assign(self.frame.returnvar.as(not null), s)
1072 self.add("goto {self.frame.returnlabel.as(not null)};")
1075 # Compile a statement (if any)
1076 fun stmt(nexpr: nullable AExpr)
1078 if nexpr == null then return
1079 var old = self.current_node
1080 self.current_node = nexpr
1082 self.current_node = old
1085 # Compile an expression an return its result
1086 # `mtype
` is the expected return type, pass null if no specific type is expected.
1087 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1089 var old = self.current_node
1090 self.current_node = nexpr
1091 var res = nexpr.expr(self).as(not null)
1092 if mtype != null then
1093 mtype = self.anchor(mtype)
1094 res = self.autobox(res, mtype)
1096 res = autoadapt(res, nexpr.mtype.as(not null))
1097 var implicit_cast_to = nexpr.implicit_cast_to
1098 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1099 add_cast(res, implicit_cast_to, "auto")
1100 res = autoadapt(res, implicit_cast_to)
1102 self.current_node = old
1106 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1107 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1109 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1110 fun debug(message: String)
1112 var node = self.current_node
1113 if node == null then
1114 print "?: {message}"
1118 self.add("/* DEBUG: {message} */")
1122 # A C function associated to a Nit method
1123 # Because of customization, a given Nit method can be compiler more that once
1124 abstract class AbstractRuntimeFunction
1126 type COMPILER: AbstractCompiler
1127 type VISITOR: AbstractCompilerVisitor
1129 # The associated Nit method
1130 var mmethoddef: MMethodDef
1132 # The mangled c name of the runtime_function
1133 # Subclasses should redefine `build_c_name
` instead
1136 var res = self.c_name_cache
1137 if res != null then return res
1138 res = self.build_c_name
1139 self.c_name_cache = res
1143 # Non cached version of `c_name
`
1144 protected fun build_c_name: String is abstract
1146 protected var c_name_cache: nullable String writable = null
1148 # Implements a call of the runtime_function
1149 # May inline the body or generate a C function call
1150 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1152 # Generate the code for the `AbstractRuntimeFunction`
1153 # Warning: compile more than once compilation makes CC unhappy
1154 fun compile_to_c(compiler: COMPILER) is abstract
1157 # A runtime variable hold a runtime value in C.
1158 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1160 # 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.
1161 class RuntimeVariable
1162 # The name of the variable in the C code
1165 # The static type of the variable (as declard in C)
1168 # The current casted type of the variable (as known in Nit)
1169 var mcasttype: MType writable
1171 # If the variable exaclty a mcasttype?
1172 # false (usual value) means that the variable is a mcasttype or a subtype.
1173 var is_exact: Bool writable = false
1175 init(name: String, mtype: MType, mcasttype: MType)
1179 self.mcasttype = mcasttype
1180 assert not mtype.need_anchor
1181 assert not mcasttype.need_anchor
1184 redef fun to_s do return name
1189 if self.is_exact then
1190 exact_str = " exact"
1195 if self.mtype == self.mcasttype then
1196 type_str = "{mtype}{exact_str}"
1198 type_str = "{mtype}({mcasttype}{exact_str})"
1200 return "<{name}:{type_str}>"
1204 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1207 type VISITOR: AbstractCompilerVisitor
1209 # The associated visitor
1210 var visitor: VISITOR
1212 # The executed property.
1213 # A Method in case of a call, an attribute in case of a default initialization.
1214 var mpropdef: MPropDef
1216 # The static type of the receiver
1217 var receiver: MClassType
1219 # Arguments of the method (the first is the receiver)
1220 var arguments: Array[RuntimeVariable]
1222 # The runtime_variable associated to the return (in a function)
1223 var returnvar: nullable RuntimeVariable writable = null
1225 # The label at the end of the property
1226 var returnlabel: nullable String writable = null
1230 # Return the C type associated to a given Nit static type
1231 fun ctype: String do return "val*"
1233 fun ctypename: String do return "val"
1235 # Return the name of the C structure associated to a Nit live type
1236 fun c_name: String is abstract
1237 protected var c_name_cache: nullable String protected writable
1240 redef class MClassType
1243 var res = self.c_name_cache
1244 if res != null then return res
1245 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1246 self.c_name_cache = res
1250 redef fun ctype: String
1252 if mclass.name == "Int" then
1254 else if mclass.name == "Bool" then
1256 else if mclass.name == "Char" then
1258 else if mclass.name == "Float" then
1260 else if mclass.name == "NativeString" then
1262 else if mclass.name == "NativeArray" then
1264 else if mclass.kind == extern_kind then
1271 redef fun ctypename: String
1273 if mclass.name == "Int" then
1275 else if mclass.name == "Bool" then
1277 else if mclass.name == "Char" then
1279 else if mclass.name == "Float" then
1281 else if mclass.name == "NativeString" then
1283 else if mclass.name == "NativeArray" then
1284 #return "{self.arguments.first.ctype}*"
1286 else if mclass.kind == extern_kind then
1294 redef class MGenericType
1297 var res = self.c_name_cache
1298 if res != null then return res
1300 for t in self.arguments do
1301 res = res + t.c_name
1303 self.c_name_cache = res
1308 redef class MParameterType
1311 var res = self.c_name_cache
1312 if res != null then return res
1313 res = "{self.mclass.c_name}_FT{self.rank}"
1314 self.c_name_cache = res
1319 redef class MVirtualType
1322 var res = self.c_name_cache
1323 if res != null then return res
1324 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1325 self.c_name_cache = res
1330 redef class MNullableType
1333 var res = self.c_name_cache
1334 if res != null then return res
1335 res = "nullable_{self.mtype.c_name}"
1336 self.c_name_cache = res
1342 # Return the name of the C structure associated to a Nit class
1343 fun c_name: String do
1344 var res = self.c_name_cache
1345 if res != null then return res
1346 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1347 self.c_name_cache = res
1350 private var c_name_cache: nullable String
1353 redef class MProperty
1354 fun c_name: String do
1355 var res = self.c_name_cache
1356 if res != null then return res
1357 res = "{self.intro.c_name}"
1358 self.c_name_cache = res
1361 private var c_name_cache: nullable String
1364 redef class MPropDef
1365 type VISITOR: AbstractCompilerVisitor
1367 private var c_name_cache: nullable String
1369 # The mangled name associated to the property
1372 var res = self.c_name_cache
1373 if res != null then return res
1374 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1375 self.c_name_cache = res
1380 redef class MMethodDef
1381 # Can the body be inlined?
1382 fun can_inline(v: VISITOR): Bool
1384 var modelbuilder = v.compiler.modelbuilder
1385 if modelbuilder.mpropdef2npropdef.has_key(self) then
1386 var npropdef = modelbuilder.mpropdef2npropdef[self]
1387 return npropdef.can_inline
1388 else if self.mproperty.name == "init" then
1389 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1396 # Inline the body in another visitor
1397 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1399 var modelbuilder = v.compiler.modelbuilder
1400 if modelbuilder.mpropdef2npropdef.has_key(self) then
1401 var npropdef = modelbuilder.mpropdef2npropdef[self]
1402 var oldnode = v.current_node
1403 v.current_node = npropdef
1404 self.compile_parameter_check(v, arguments)
1405 npropdef.compile_to_c(v, self, arguments)
1406 v.current_node = oldnode
1407 else if self.mproperty.name == "init" then
1408 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1409 var oldnode = v.current_node
1410 v.current_node = nclassdef
1411 self.compile_parameter_check(v, arguments)
1412 nclassdef.compile_to_c(v, self, arguments)
1413 v.current_node = oldnode
1420 # Generate type checks in the C code to check covariant parameters
1421 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1423 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1425 for i in [0..msignature.arity[ do
1426 # skip test for vararg since the array is instantiated with the correct polymorphic type
1427 if msignature.vararg_rank == i then continue
1429 # skip if the cast is not required
1430 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1431 if not origmtype.need_anchor then continue
1433 # get the parameter type
1434 var mtype = self.msignature.mparameters[i].mtype
1437 # note that v decides if and how to implements the cast
1438 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1439 v.add_cast(arguments[i+1], mtype, "covariance")
1446 redef class APropdef
1447 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1449 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1450 debug("Not yet implemented")
1453 fun can_inline: Bool do return true
1456 redef class AConcreteMethPropdef
1457 redef fun compile_to_c(v, mpropdef, arguments)
1459 for i in [0..mpropdef.msignature.arity[ do
1460 var variable = self.n_signature.n_params[i].variable.as(not null)
1461 v.assign(v.variable(variable), arguments[i+1])
1463 # Call the implicit super-init
1464 var auto_super_inits = self.auto_super_inits
1465 if auto_super_inits != null then
1466 var selfarg = [arguments.first]
1467 for auto_super_init in auto_super_inits do
1468 if auto_super_init.intro.msignature.arity == 0 then
1469 v.send(auto_super_init, selfarg)
1471 v.send(auto_super_init, arguments)
1475 v.stmt(self.n_block)
1478 redef fun can_inline
1480 if self.auto_super_inits != null then return false
1481 var nblock = self.n_block
1482 if nblock == null then return true
1483 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1484 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1489 redef class AInternMethPropdef
1490 redef fun compile_to_c(v, mpropdef, arguments)
1492 var pname = mpropdef.mproperty.name
1493 var cname = mpropdef.mclassdef.mclass.name
1494 var ret = mpropdef.msignature.return_mtype
1496 ret = v.resolve_for(ret, arguments.first)
1498 if pname != "==" and pname != "!=" then
1499 v.adapt_signature(mpropdef, arguments)
1501 if cname == "Int" then
1502 if pname == "output" then
1503 v.add("printf(\"%ld\\n\", {arguments.first});")
1505 else if pname == "object_id" then
1506 v.ret(arguments.first)
1508 else if pname == "+" then
1509 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1511 else if pname == "-" then
1512 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1514 else if pname == "unary -" then
1515 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1517 else if pname == "succ" then
1518 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1520 else if pname == "prec" then
1521 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1523 else if pname == "*" then
1524 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1526 else if pname == "/" then
1527 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1529 else if pname == "%" then
1530 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1532 else if pname == "lshift" then
1533 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1535 else if pname == "rshift" then
1536 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1538 else if pname == "==" then
1539 v.ret(v.equal_test(arguments[0], arguments[1]))
1541 else if pname == "!=" then
1542 var res = v.equal_test(arguments[0], arguments[1])
1543 v.ret(v.new_expr("!{res}", ret.as(not null)))
1545 else if pname == "<" then
1546 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1548 else if pname == ">" then
1549 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1551 else if pname == "<=" then
1552 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1554 else if pname == ">=" then
1555 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1557 else if pname == "to_f" then
1558 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1560 else if pname == "ascii" then
1561 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1564 else if cname == "Char" then
1565 if pname == "output" then
1566 v.add("printf(\"%c\", {arguments.first});")
1568 else if pname == "object_id" then
1569 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1571 else if pname == "+" then
1572 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1574 else if pname == "-" then
1575 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1577 else if pname == "==" then
1578 v.ret(v.equal_test(arguments[0], arguments[1]))
1580 else if pname == "!=" then
1581 var res = v.equal_test(arguments[0], arguments[1])
1582 v.ret(v.new_expr("!{res}", ret.as(not null)))
1584 else if pname == "succ" then
1585 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1587 else if pname == "prec" then
1588 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1590 else if pname == "<" then
1591 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1593 else if pname == ">" then
1594 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1596 else if pname == "<=" then
1597 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1599 else if pname == ">=" then
1600 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1602 else if pname == "to_i" then
1603 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1605 else if pname == "ascii" then
1606 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1609 else if cname == "Bool" then
1610 if pname == "output" then
1611 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1613 else if pname == "object_id" then
1614 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1616 else if pname == "==" then
1617 v.ret(v.equal_test(arguments[0], arguments[1]))
1619 else if pname == "!=" then
1620 var res = v.equal_test(arguments[0], arguments[1])
1621 v.ret(v.new_expr("!{res}", ret.as(not null)))
1624 else if cname == "Float" then
1625 if pname == "output" then
1626 v.add("printf(\"%f\\n\", {arguments.first});")
1628 else if pname == "object_id" then
1629 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1631 else if pname == "+" then
1632 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1634 else if pname == "-" then
1635 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1637 else if pname == "unary -" then
1638 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1640 else if pname == "succ" then
1641 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1643 else if pname == "prec" then
1644 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1646 else if pname == "*" then
1647 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1649 else if pname == "/" then
1650 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1652 else if pname == "==" then
1653 v.ret(v.equal_test(arguments[0], arguments[1]))
1655 else if pname == "!=" then
1656 var res = v.equal_test(arguments[0], arguments[1])
1657 v.ret(v.new_expr("!{res}", ret.as(not null)))
1659 else if pname == "<" then
1660 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1662 else if pname == ">" then
1663 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1665 else if pname == "<=" then
1666 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1668 else if pname == ">=" then
1669 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1671 else if pname == "to_i" then
1672 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1675 else if cname == "NativeString" then
1676 if pname == "[]" then
1677 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1679 else if pname == "[]=" then
1680 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1682 else if pname == "copy_to" then
1683 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1685 else if pname == "atoi" then
1686 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1689 else if cname == "NativeArray" then
1690 v.native_array_def(pname, ret, arguments)
1693 if pname == "exit" then
1694 v.add("exit({arguments[1]});")
1696 else if pname == "sys" then
1697 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1699 else if pname == "calloc_string" then
1700 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1702 else if pname == "calloc_array" then
1703 v.calloc_array(ret.as(not null), arguments)
1705 else if pname == "object_id" then
1706 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1708 else if pname == "is_same_type" then
1709 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1711 else if pname == "is_same_instance" then
1712 v.ret(v.equal_test(arguments[0], arguments[1]))
1714 else if pname == "output_class_name" then
1715 var nat = v.class_name_string(arguments.first)
1716 v.add("printf(\"%s\\n\", {nat});")
1718 else if pname == "native_class_name" then
1719 var nat = v.class_name_string(arguments.first)
1720 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1722 else if pname == "force_garbage_collection" then
1723 v.add("nit_gcollect();")
1725 else if pname == "native_argc" then
1726 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1728 else if pname == "native_argv" then
1729 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1732 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1733 debug("Not implemented {mpropdef}")
1737 redef class AExternMethPropdef
1738 redef fun compile_to_c(v, mpropdef, arguments)
1741 var nextern = self.n_extern
1742 if nextern == null then
1743 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1744 v.add("show_backtrace(1);")
1747 externname = nextern.text.substring(1, nextern.text.length-2)
1748 if location.file != null then
1749 var file = location.file.filename
1752 var res: nullable RuntimeVariable = null
1753 var ret = mpropdef.msignature.return_mtype
1755 ret = v.resolve_for(ret, arguments.first)
1756 res = v.new_var(ret)
1758 v.adapt_signature(mpropdef, arguments)
1761 v.add("{externname}({arguments.join(", ")});")
1763 v.add("{res} = {externname}({arguments.join(", ")});")
1769 redef class AExternInitPropdef
1770 redef fun compile_to_c(v, mpropdef, arguments)
1773 var nextern = self.n_extern
1774 if nextern == null then
1775 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1776 v.add("show_backtrace(1);")
1779 externname = nextern.text.substring(1, nextern.text.length-2)
1780 if location.file != null then
1781 var file = location.file.filename
1784 v.adapt_signature(mpropdef, arguments)
1785 var ret = arguments.first.mtype
1786 var res = v.new_var(ret)
1790 v.add("{res} = {externname}({arguments.join(", ")});")
1795 redef class AAttrPropdef
1796 redef fun compile_to_c(v, mpropdef, arguments)
1798 if arguments.length == 1 then
1799 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1800 v.assign(v.frame.returnvar.as(not null), res)
1802 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1806 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1808 var nexpr = self.n_expr
1809 if nexpr != null then
1810 var oldnode = v.current_node
1811 v.current_node = self
1812 var old_frame = v.frame
1813 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1815 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1816 v.write_attribute(self.mpropdef.mproperty, recv, value)
1818 v.current_node = oldnode
1822 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1824 var nexpr = self.n_expr
1825 if nexpr != null then return
1827 var oldnode = v.current_node
1828 v.current_node = self
1829 var old_frame = v.frame
1830 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1832 # Force read to check the initialization
1833 v.read_attribute(self.mpropdef.mproperty, recv)
1835 v.current_node = oldnode
1839 redef class AClassdef
1840 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1842 if mpropdef == self.mfree_init then
1843 var super_inits = self.super_inits
1844 if super_inits != null then
1845 assert arguments.length == 1
1846 for su in super_inits do
1847 v.send(su, arguments)
1851 var recv = arguments.first
1853 # Collect undefined attributes
1854 for npropdef in self.n_propdefs do
1855 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1856 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1866 redef class ADeferredMethPropdef
1867 redef fun compile_to_c(v, mpropdef, arguments) do
1868 var cn = v.class_name_string(arguments.first)
1869 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1872 redef fun can_inline do return true
1876 # Try to compile self as an expression
1877 # Do not call this method directly, use `v
.expr
` instead
1878 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1880 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1881 var mtype = self.mtype
1882 if mtype == null then
1885 var res = v.new_var(mtype)
1886 v.add("/* {res} = NOT YET {class_name} */")
1891 # Try to compile self as a statement
1892 # Do not call this method directly, use `v
.stmt
` instead
1893 private fun stmt(v: AbstractCompilerVisitor)
1896 if res != null then v.add("{res};")
1900 redef class ABlockExpr
1903 for e in self.n_expr do v.stmt(e)
1907 var last = self.n_expr.last
1908 for e in self.n_expr do
1909 if e == last then break
1912 return v.expr(last, null)
1916 redef class AVardeclExpr
1919 var variable = self.variable.as(not null)
1920 var ne = self.n_expr
1922 var i = v.expr(ne, variable.declared_type)
1923 v.assign(v.variable(variable), i)
1928 redef class AVarExpr
1931 var res = v.variable(self.variable.as(not null))
1932 var mtype = self.mtype.as(not null)
1933 return v.autoadapt(res, mtype)
1937 redef class AVarAssignExpr
1940 var variable = self.variable.as(not null)
1941 var i = v.expr(self.n_value, variable.declared_type)
1942 v.assign(v.variable(variable), i)
1946 var variable = self.variable.as(not null)
1947 var i = v.expr(self.n_value, variable.declared_type)
1948 v.assign(v.variable(variable), i)
1953 redef class AVarReassignExpr
1956 var variable = self.variable.as(not null)
1957 var vari = v.variable(variable)
1958 var value = v.expr(self.n_value, variable.declared_type)
1959 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
1961 v.assign(v.variable(variable), res)
1965 redef class ASelfExpr
1966 redef fun expr(v) do return v.frame.arguments.first
1969 redef class AContinueExpr
1970 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
1973 redef class ABreakExpr
1974 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
1977 redef class AReturnExpr
1980 var nexpr = self.n_expr
1981 if nexpr != null then
1982 var returnvar = v.frame.returnvar.as(not null)
1983 var i = v.expr(nexpr, returnvar.mtype)
1984 v.assign(returnvar, i)
1986 v.add("goto {v.frame.returnlabel.as(not null)};")
1990 redef class AAbortExpr
1991 redef fun stmt(v) do v.add_abort("Aborted")
1997 var cond = v.expr_bool(self.n_expr)
1998 v.add("if ({cond})\{")
2007 var res = v.new_var(self.mtype.as(not null))
2008 var cond = v.expr_bool(self.n_expr)
2009 v.add("if ({cond})\{")
2010 v.assign(res, v.expr(self.n_then.as(not null), null))
2012 v.assign(res, v.expr(self.n_else.as(not null), null))
2018 redef class AIfexprExpr
2021 var res = v.new_var(self.mtype.as(not null))
2022 var cond = v.expr_bool(self.n_expr)
2023 v.add("if ({cond})\{")
2024 v.assign(res, v.expr(self.n_then, null))
2026 v.assign(res, v.expr(self.n_else, null))
2035 v.stmt(self.n_block)
2036 var escapemark = self.escapemark
2037 if escapemark != null then
2038 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2043 redef class AWhileExpr
2047 var cond = v.expr_bool(self.n_expr)
2048 v.add("if (!{cond}) break;")
2049 v.stmt(self.n_block)
2050 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2052 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2056 redef class ALoopExpr
2060 v.stmt(self.n_block)
2061 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2063 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2067 redef class AForExpr
2070 # Shortcut on explicit range
2071 # Avoid the instantiation of the range and the iterator
2072 var nexpr = self.n_expr
2073 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2074 var from = v.expr(nexpr.n_expr, null)
2075 var to = v.expr(nexpr.n_expr2, null)
2076 var variable = v.variable(variables.first)
2078 v.assign(variable, from)
2079 v.add("for(;;) \{ /* shortcut range */")
2081 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2083 v.add("if(!{ok}) break;")
2085 v.stmt(self.n_block)
2087 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2088 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2090 v.assign(variable, succ)
2092 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2096 var cl = v.expr(self.n_expr, null)
2097 var it_meth = self.method_iterator
2098 assert it_meth != null
2099 var it = v.send(it_meth, [cl])
2102 var isok_meth = self.method_is_ok
2103 assert isok_meth != null
2104 var ok = v.send(isok_meth, [it])
2106 v.add("if(!{ok}) break;")
2107 if self.variables.length == 1 then
2108 var item_meth = self.method_item
2109 assert item_meth != null
2110 var i = v.send(item_meth, [it])
2112 v.assign(v.variable(variables.first), i)
2113 else if self.variables.length == 2 then
2114 var key_meth = self.method_key
2115 assert key_meth != null
2116 var i = v.send(key_meth, [it])
2118 v.assign(v.variable(variables[0]), i)
2119 var item_meth = self.method_item
2120 assert item_meth != null
2121 i = v.send(item_meth, [it])
2123 v.assign(v.variable(variables[1]), i)
2127 v.stmt(self.n_block)
2128 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2129 var next_meth = self.method_next
2130 assert next_meth != null
2131 v.send(next_meth, [it])
2133 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2137 redef class AAssertExpr
2140 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2142 var cond = v.expr_bool(self.n_expr)
2143 v.add("if (!{cond}) \{")
2147 v.add_abort("Assert '{nid.text}' failed")
2149 v.add_abort("Assert failed")
2158 var res = v.new_var(self.mtype.as(not null))
2159 var i1 = v.expr_bool(self.n_expr)
2160 v.add("if ({i1}) \{")
2163 var i2 = v.expr_bool(self.n_expr2)
2164 v.add("{res} = {i2};")
2170 redef class AImpliesExpr
2173 var res = v.new_var(self.mtype.as(not null))
2174 var i1 = v.expr_bool(self.n_expr)
2175 v.add("if (!{i1}) \{")
2178 var i2 = v.expr_bool(self.n_expr2)
2179 v.add("{res} = {i2};")
2185 redef class AAndExpr
2188 var res = v.new_var(self.mtype.as(not null))
2189 var i1 = v.expr_bool(self.n_expr)
2190 v.add("if (!{i1}) \{")
2193 var i2 = v.expr_bool(self.n_expr2)
2194 v.add("{res} = {i2};")
2200 redef class ANotExpr
2203 var cond = v.expr_bool(self.n_expr)
2204 return v.new_expr("!{cond}", self.mtype.as(not null))
2208 redef class AOrElseExpr
2211 var res = v.new_var(self.mtype.as(not null))
2212 var i1 = v.expr(self.n_expr, null)
2213 v.add("if ({i1}!=NULL) \{")
2216 var i2 = v.expr(self.n_expr2, null)
2223 redef class AIntExpr
2224 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2227 redef class AFloatExpr
2228 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2231 redef class ACharExpr
2232 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2235 redef class AArrayExpr
2238 var mtype = self.mtype.as(MClassType).arguments.first
2239 var array = new Array[RuntimeVariable]
2240 for nexpr in self.n_exprs.n_exprs do
2241 var i = v.expr(nexpr, mtype)
2244 return v.array_instance(array, mtype)
2248 redef class AStringFormExpr
2249 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2252 redef class ASuperstringExpr
2255 var array = new Array[RuntimeVariable]
2256 for ne in self.n_exprs do
2257 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2258 var i = v.expr(ne, null)
2261 var a = v.array_instance(array, v.object_type)
2262 var res = v.send(v.get_property("to_s", a.mtype), [a])
2267 redef class ACrangeExpr
2270 var i1 = v.expr(self.n_expr, null)
2271 var i2 = v.expr(self.n_expr2, null)
2272 var mtype = self.mtype.as(MClassType)
2273 var res = v.init_instance(mtype)
2274 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2279 redef class AOrangeExpr
2282 var i1 = v.expr(self.n_expr, null)
2283 var i2 = v.expr(self.n_expr2, null)
2284 var mtype = self.mtype.as(MClassType)
2285 var res = v.init_instance(mtype)
2286 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2291 redef class ATrueExpr
2292 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2295 redef class AFalseExpr
2296 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2299 redef class ANullExpr
2300 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2303 redef class AIsaExpr
2306 var i = v.expr(self.n_expr, null)
2307 return v.type_test(i, self.cast_type.as(not null), "isa")
2311 redef class AAsCastExpr
2314 var i = v.expr(self.n_expr, null)
2315 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2317 v.add_cast(i, self.mtype.as(not null), "as")
2322 redef class AAsNotnullExpr
2325 var i = v.expr(self.n_expr, null)
2326 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2328 v.add("if ({i} == NULL) \{")
2329 v.add_abort("Cast failed")
2335 redef class AParExpr
2336 redef fun expr(v) do return v.expr(self.n_expr, null)
2339 redef class AOnceExpr
2342 var mtype = self.mtype.as(not null)
2343 var name = v.get_name("varonce")
2344 var guard = v.get_name(name + "_guard")
2345 v.add_decl("static {mtype.ctype} {name};")
2346 v.add_decl("static int {guard};")
2347 var res = v.new_var(mtype)
2348 v.add("if ({guard}) \{")
2349 v.add("{res} = {name};")
2351 var i = v.expr(self.n_expr, mtype)
2352 v.add("{res} = {i};")
2353 v.add("{name} = {res};")
2354 v.add("{guard} = 1;")
2360 redef class ASendExpr
2363 var recv = v.expr(self.n_expr, null)
2365 for a in self.raw_arguments.as(not null) do
2366 args.add(v.expr(a, null))
2368 return v.compile_callsite(self.callsite.as(not null), args)
2372 redef class ASendReassignFormExpr
2375 var recv = v.expr(self.n_expr, null)
2377 for a in self.raw_arguments.as(not null) do
2378 args.add(v.expr(a, null))
2380 var value = v.expr(self.n_value, null)
2382 var left = v.compile_callsite(self.callsite.as(not null), args)
2385 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2389 v.compile_callsite(self.write_callsite.as(not null), args)
2393 redef class ASuperExpr
2396 var recv = v.frame.arguments.first
2398 for a in self.n_args.n_exprs do
2399 args.add(v.expr(a, null))
2401 if args.length == 1 then
2402 args = v.frame.arguments
2405 var mproperty = self.mproperty
2406 if mproperty != null then
2407 if mproperty.intro.msignature.arity == 0 then
2411 var res = v.send(mproperty, args)
2415 # stantard call-next-method
2416 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2420 redef class ANewExpr
2423 var mtype = self.mtype.as(MClassType)
2425 var ctype = mtype.ctype
2426 if ctype == "val*" then
2427 recv = v.init_instance(mtype)
2428 else if ctype == "void*" then
2429 recv = v.new_expr("NULL/*special!*/", mtype)
2431 debug("cannot new {mtype}")
2435 for a in self.n_args.n_exprs do
2436 args.add(v.expr(a, null))
2438 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2439 if res2 != null then
2440 #self.debug("got {res2} from {mproperty}. drop {recv}")
2447 redef class AAttrExpr
2450 var recv = v.expr(self.n_expr, null)
2451 var mproperty = self.mproperty.as(not null)
2452 return v.read_attribute(mproperty, recv)
2456 redef class AAttrAssignExpr
2459 var recv = v.expr(self.n_expr, null)
2460 var i = v.expr(self.n_value, null)
2461 var mproperty = self.mproperty.as(not null)
2462 v.write_attribute(mproperty, recv, i)
2466 redef class AAttrReassignExpr
2469 var recv = v.expr(self.n_expr, null)
2470 var value = v.expr(self.n_value, null)
2471 var mproperty = self.mproperty.as(not null)
2472 var attr = v.read_attribute(mproperty, recv)
2473 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2475 v.write_attribute(mproperty, recv, res)
2479 redef class AIssetAttrExpr
2482 var recv = v.expr(self.n_expr, null)
2483 var mproperty = self.mproperty.as(not null)
2484 return v.isset_attribute(mproperty, recv)
2488 redef class ADebugTypeExpr
2497 redef class Array[E]
2498 # Return a new `Array` with the elements only contened in self and not in `o
`
2499 fun -(o: Array[E]): Array[E] do
2500 var res = new Array[E]
2501 for e in self do if not o.has(e) then res.add(e)
2507 # All `MProperty` associated to all `MClassDef` of `mclass
`
2508 fun properties(mclass: MClass): Set[MProperty] do
2509 if not self.properties_cache.has_key(mclass) then
2510 var properties = new HashSet[MProperty]
2511 var parents = new Array[MClass]
2512 if self.flatten_mclass_hierarchy.has(mclass) then
2513 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2515 for parent in parents do
2516 properties.add_all(self.properties(parent))
2518 for mclassdef in mclass.mclassdefs do
2519 for mprop in mclassdef.intro_mproperties do
2520 properties.add(mprop)
2523 self.properties_cache[mclass] = properties
2525 return properties_cache[mclass]
2527 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2531 # Does this module use the legacy native interface?
2532 fun uses_legacy_ni: Bool is abstract
2534 # Write FFI results to file
2535 fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
2537 # Write nitni results to file
2538 fun finalize_nitni(v: AbstractCompilerVisitor) is abstract