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 var cfiles
= new Array[String]
131 write_files
(compiler
, compile_dir
, cfiles
)
133 # Generate the Makefile
135 write_makefile
(compiler
, compile_dir
, cfiles
)
138 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
140 # Execute the Makefile
142 if self.toolcontext
.opt_no_cc
.value
then return
145 self.toolcontext
.info
("*** COMPILING C ***", 1)
147 compile_c_code
(compiler
, compile_dir
)
150 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
153 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
155 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
157 # Add gc_choser.h to aditionnal bodies
158 var gc_chooser
= new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
159 compiler
.extern_bodies
.add
(gc_chooser
)
160 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
161 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
164 for m
in compiler
.mainmodule
.in_importation
.greaters
do if mmodule2nmodule
.keys
.has
(m
) then
165 var amodule
= mmodule2nmodule
[m
]
166 if m
.uses_ffi
or amodule
.uses_legacy_ni
then
167 compiler
.finalize_ffi_for_module
(amodule
)
171 # Copy original .[ch] files to compile_dir
172 for src
in compiler
.files_to_copy
do
173 var basename
= src
.basename
("")
174 var dst
= "{compile_dir}/{basename}"
178 var hfilename
= compiler
.header
.file
.name
+ ".h"
179 var hfilepath
= "{compile_dir}/{hfilename}"
180 var h
= new OFStream.open
(hfilepath
)
181 for l
in compiler
.header
.decl_lines
do
185 for l
in compiler
.header
.lines
do
191 for f
in compiler
.files
do
193 var hfile
: nullable OFStream = null
195 var cfilename
= "{f.name}.0.h"
196 var cfilepath
= "{compile_dir}/{cfilename}"
197 hfile
= new OFStream.open
(cfilepath
)
198 hfile
.write
"#include \"{hfilename}\
"\n"
199 for key
in f
.required_declarations
do
200 if not compiler
.provided_declarations
.has_key
(key
) then
201 print
"No provided declaration for {key}"
204 hfile
.write compiler
.provided_declarations
[key
]
208 var file
: nullable OFStream = null
209 for vis
in f
.writers
do
210 if vis
== compiler
.header
then continue
211 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
212 if total_lines
== 0 then continue
214 if file
== null or count
> 10000 then
216 if file
!= null then file
.close
217 cfilename
= "{f.name}.{i}.c"
218 cfilepath
= "{compile_dir}/{cfilename}"
219 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
220 cfiles
.add
(cfilename
)
221 file
= new OFStream.open
(cfilepath
)
222 file
.write
"#include \"{f.name}.0.h\
"\n"
225 for l
in vis
.decl_lines
do
229 for l
in vis
.lines
do
234 if file
!= null then file
.close
237 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
240 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
242 var mainmodule
= compiler
.mainmodule
244 var outname
= self.toolcontext
.opt_output
.value
245 if outname
== null then
246 outname
= "{mainmodule.name}"
249 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
250 var outpath
= orig_dir
.join_path
(outname
).simplify_path
251 var makename
= "{mainmodule.name}.mk"
252 var makepath
= "{compile_dir}/{makename}"
253 var makefile
= new OFStream.open
(makepath
)
257 cc_includes
+= " -I \"" + p + "\
""
260 var linker_options
= new HashSet[String]
261 for m
in mainmodule
.in_importation
.greaters
do if mmodule2nmodule
.keys
.has
(m
) then
262 var amod
= mmodule2nmodule
[m
]
263 linker_options
.add
(amod
.c_linker_options
)
266 if not toolcontext
.opt_no_stacktrace
.value
then linker_options
.add
("-lunwind")
268 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
269 makefile
.write
("all: {outpath}\n\n")
271 var ofiles
= new Array[String]
272 # Compile each generated file
274 var o
= f
.strip_extension
(".c") + ".o"
275 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
279 # Compile each required extern body into a specific .o
280 for f
in compiler
.extern_bodies
do
281 if f
isa ExternCFile then
282 var basename
= f
.filename
.basename
(".c")
283 var o
= "{basename}.extern.o"
284 var ff
= f
.filename
.basename
("")
285 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
291 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
293 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
295 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
298 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
300 var makename
= "{compiler.mainmodule.name}.mk" # FIXME duplicated from write_makefile
302 var makeflags
= self.toolcontext
.opt_make_flags
.value
303 if makeflags
== null then makeflags
= ""
304 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
307 if self.toolcontext
.verbose_level
>= 3 then
308 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
310 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
313 toolcontext
.error
(null, "make failed! Error code: {res}.")
318 # Singleton that store the knowledge about the compilation process
319 abstract class AbstractCompiler
320 type VISITOR: AbstractCompilerVisitor
322 # Table corresponding c_names to nit names (methods)
323 var names
= new HashMap[String, String]
325 # The main module of the program currently compiled
326 # Is assigned during the separate compilation
327 var mainmodule
: MModule writable
329 # The real main module of the program
330 var realmainmodule
: MModule
332 # The modeulbuilder used to know the model and the AST
333 var modelbuilder
: ModelBuilder protected writable
335 # Is hardening asked? (see --hardening)
336 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
338 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
340 self.mainmodule
= mainmodule
341 self.realmainmodule
= mainmodule
342 self.modelbuilder
= modelbuilder
345 # Force the creation of a new file
346 # The point is to avoid contamination between must-be-compiled-separately files
347 fun new_file
(name
: String): CodeFile
349 var f
= new CodeFile(name
)
354 # The list of all associated files
355 # Used to generate .c files
356 var files
: List[CodeFile] = new List[CodeFile]
358 # Initialize a visitor specific for a compiler engine
359 fun new_visitor
: VISITOR is abstract
361 # Where global declaration are stored (the main .h)
362 var header
: CodeWriter writable
364 # Provide a declaration that can be requested (before or latter) by a visitor
365 fun provide_declaration
(key
: String, s
: String)
367 if self.provided_declarations
.has_key
(key
) then
368 assert self.provided_declarations
[key
] == s
370 self.provided_declarations
[key
] = s
373 private var provided_declarations
= new HashMap[String, String]
375 # Builds the .c and .h files to be used when generating a Stack Trace
376 # Binds the generated C function names to Nit function names
377 fun build_c_to_nit_bindings
379 var compile_dir
= modelbuilder
.compile_dir
381 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
382 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
383 stream
.write
("%define lookup-function-name get_nit_name\n")
384 stream
.write
("struct C_Nit_Names;\n")
386 stream
.write
("####\n")
387 for i
in names
.keys
do
389 stream
.write
(",\t\"")
390 stream.write(names[i])
393 stream
.write
("####\n")
397 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
398 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
399 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
402 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
405 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
409 # This method call compile_header_strucs method that has to be refined
410 fun compile_header
do
412 var toolctx
= modelbuilder
.toolcontext
413 self.header
.add_decl
("#include <stdlib.h>")
414 self.header
.add_decl
("#include <stdio.h>")
415 self.header
.add_decl
("#include <string.h>")
416 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
418 compile_header_structs
419 compile_nitni_structs
421 # Signal handler function prototype
422 self.header
.add_decl
("void show_backtrace(int);")
424 # Global variable used by intern methods
425 self.header
.add_decl
("extern int glob_argc;")
426 self.header
.add_decl
("extern char **glob_argv;")
427 self.header
.add_decl
("extern val *glob_sys;")
430 # Declaration of structures for live Nit types
431 protected fun compile_header_structs
is abstract
433 # Declaration of structures for nitni undelying the FFI
434 protected fun compile_nitni_structs
is abstract
436 # Generate the main C function.
438 # * allocate the Sys object if it exists
439 # * call init if is exists
440 # * call main if it exists
441 fun compile_main_function
443 var v
= self.new_visitor
444 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
445 v
.add_decl
("#include \"c_functions_hash
.h\
"")
447 v
.add_decl
("#include <signal.h>")
448 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
449 v
.add_decl
("#define UNW_LOCAL_ONLY")
450 v
.add_decl
("#include <libunwind.h>")
452 v
.add_decl
("int glob_argc;")
453 v
.add_decl
("char **glob_argv;")
454 v
.add_decl
("val *glob_sys;")
456 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
457 for tag
in count_type_test_tags
do
458 v
.add_decl
("long count_type_test_resolved_{tag};")
459 v
.add_decl
("long count_type_test_unresolved_{tag};")
460 v
.add_decl
("long count_type_test_skipped_{tag};")
461 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
462 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
463 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
467 v
.add_decl
("void sig_handler(int signo)\{")
468 v
.add_decl
("printf(\"Caught signal
: %s\\n\
", strsignal(signo));")
469 v
.add_decl
("show_backtrace(signo);")
472 v
.add_decl
("void show_backtrace (int signo) \{")
473 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
474 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
475 v
.add_decl
("unw_cursor_t cursor;")
476 v
.add_decl
("if(opt==NULL)\{")
477 v
.add_decl
("unw_context_t uc;")
478 v
.add_decl
("unw_word_t ip;")
479 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
480 v
.add_decl
("unw_getcontext(&uc);")
481 v
.add_decl
("unw_init_local(&cursor, &uc);")
482 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
483 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
484 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
485 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
486 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
487 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
488 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
489 v
.add_decl
(" if (recv != 0)\{")
490 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
491 v.add_decl(" \}else\{")
492 v.add_decl(" printf(\"` %s\\n\
", procname);")
495 v
.add_decl
(" printf(\"` %s \\n\",procname);")
498 v.add_decl("printf(\"-------------------------------------------------\\n\");")
499 v.add_decl("free(procname);")
502 v.add_decl("exit(signo);")
505 v.add_decl("int main(int argc, char** argv) \{")
507 v.add("signal(SIGABRT, sig_handler);")
508 v.add("signal(SIGFPE, sig_handler);")
509 v.add("signal(SIGILL, sig_handler);")
510 v.add("signal(SIGINT, sig_handler);")
511 v.add("signal(SIGTERM, sig_handler);")
512 v.add("signal(SIGSEGV, sig_handler);")
514 v.add("glob_argc = argc; glob_argv = argv;")
515 v.add("initialize_gc_option();")
516 var main_type = mainmodule.sys_type
517 if main_type != null then
518 var mainmodule = v.compiler.mainmodule
519 var glob_sys = v.init_instance(main_type)
520 v.add("glob_sys = {glob_sys};")
521 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
522 if main_init != null then
523 v.send(main_init, [glob_sys])
525 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
526 if main_method != null then
527 v.send(main_method, [glob_sys])
531 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
532 v.add_decl("long count_type_test_resolved_total = 0;")
533 v.add_decl("long count_type_test_unresolved_total = 0;")
534 v.add_decl("long count_type_test_skipped_total = 0;")
535 v.add_decl("long count_type_test_total_total = 0;")
536 for tag in count_type_test_tags do
537 v.add_decl("long count_type_test_total_{tag};")
538 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
539 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
540 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
541 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
542 v.add("count_type_test_total_total += count_type_test_total_{tag};")
544 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
545 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
546 var tags = count_type_test_tags.to_a
549 v.add("printf(\"{tag}\");")
550 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
551 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
552 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
553 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
561 # List of additional files required to compile (FFI)
562 var extern_bodies = new Array[ExternFile]
564 # List of source files to copy over to the compile dir
565 var files_to_copy = new Array[String]
567 # This is used to avoid adding an extern file more than once
568 private var seen_extern = new ArraySet[String]
570 # Generate code that initialize the attributes on a new instance
571 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
573 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
574 self.mainmodule.linearize_mclassdefs(cds)
576 var n = self.modelbuilder.mclassdef2nclassdef[cd]
577 for npropdef in n.n_propdefs do
578 if npropdef isa AAttrPropdef then
579 npropdef.init_expr(v, recv)
585 # Generate code that check if an attribute is correctly initialized
586 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
588 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
589 self.mainmodule.linearize_mclassdefs(cds)
591 var n = self.modelbuilder.mclassdef2nclassdef[cd]
592 for npropdef in n.n_propdefs do
593 if npropdef isa AAttrPropdef then
594 npropdef.check_expr(v, recv)
602 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
603 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
604 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
605 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
607 protected fun init_count_type_test_tags: HashMap[String, Int]
609 var res = new HashMap[String, Int]
610 for tag in count_type_test_tags do
616 # Display stats about compilation process
618 # * type tests against resolved types (`x
isa Collection[Animal]`)
619 # * type tests against unresolved types (`x
isa Collection[E
]`)
620 # * type tests skipped
625 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
626 print "# static count_type_test"
627 print "\tresolved:\tunresolved\tskipped\ttotal"
628 var count_type_test_total = init_count_type_test_tags
629 count_type_test_resolved["total"] = 0
630 count_type_test_unresolved["total"] = 0
631 count_type_test_skipped["total"] = 0
632 count_type_test_total["total"] = 0
633 for tag in count_type_test_tags do
634 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
635 count_type_test_resolved["total"] += count_type_test_resolved[tag]
636 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
637 count_type_test_skipped["total"] += count_type_test_skipped[tag]
638 count_type_test_total["total"] += count_type_test_total[tag]
640 var count_type_test = count_type_test_total["total"]
641 var tags = count_type_test_tags.to_a
645 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
646 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
647 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
648 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
655 # Avoid division by zero by returning the string "n/a"
656 fun div(a,b:Int):String
658 if b == 0 then return "n/a"
659 return ((a*10000/b).to_f / 100.0).to_precision(2)
662 fun finalize_ffi_for_module(nmodule: AModule)
664 var visitor = new_visitor
665 nmodule.finalize_ffi(visitor, modelbuilder)
666 nmodule.finalize_nitni(visitor)
669 # Does this compiler support the FFI?
670 fun supports_ffi: Bool do return false
673 # A file unit (may be more than one file if
674 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
677 var writers = new Array[CodeWriter]
678 var required_declarations = new HashSet[String]
681 # Where to store generated lines
684 var lines: List[String] = new List[String]
685 var decl_lines: List[String] = new List[String]
687 # Add a line in the main part of the generated C
688 fun add(s: String) do self.lines.add(s)
691 # (used for local or global declaration)
692 fun add_decl(s: String) do self.decl_lines.add(s)
697 file.writers.add(self)
701 # A visitor on the AST of property definition that generate the C code.
702 abstract class AbstractCompilerVisitor
704 type COMPILER: AbstractCompiler
706 # The associated compiler
707 var compiler: COMPILER
709 # The current visited AST node
710 var current_node: nullable ANode writable = null
712 # The current `Frame`
713 var frame: nullable Frame writable
715 # Alias for self.compiler.mainmodule.object_type
716 fun object_type: MClassType do return self.compiler.mainmodule.object_type
718 # Alias for self.compiler.mainmodule.bool_type
719 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
721 var writer: CodeWriter
723 init(compiler: COMPILER)
725 self.compiler = compiler
726 self.writer = new CodeWriter(compiler.files.last)
729 # Force to get the primitive class named `name
` or abort
730 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
732 # Force to get the primitive property named `name
` in the instance `recv
` or abort
733 fun get_property(name: String, recv: MType): MMethod
735 assert recv isa MClassType
736 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
739 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
741 return self.send(callsite.mproperty, args)
744 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
746 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
748 # Transform varargs, in raw arguments, into a single argument of type `Array`
749 # Note: this method modify the given `args
`
750 # If there is no vararg, then `args
` is not modified.
751 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
753 var recv = args.first
754 var vararg_rank = msignature.vararg_rank
755 if vararg_rank >= 0 then
756 assert args.length >= msignature.arity + 1 # because of self
758 args = new Array[RuntimeVariable]
760 args.add(rawargs.first) # recv
762 for i in [0..vararg_rank[ do
763 args.add(rawargs[i+1])
766 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
767 var vararg = new Array[RuntimeVariable]
768 for i in [vararg_rank..vararg_lastrank] do
769 vararg.add(rawargs[i+1])
772 var elttype = msignature.mparameters[vararg_rank].mtype
773 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
775 for i in [vararg_lastrank+1..rawargs.length-1[ do
776 args.add(rawargs[i+1])
779 rawargs.add_all(args)
785 # Anchor a type to the main module and the current receiver
786 fun anchor(mtype: MType): MType
788 if not mtype.need_anchor then return mtype
789 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
792 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
794 if not mtype.need_anchor then return mtype
795 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
798 # Unsafely cast a value to a new type
799 # ie the result share the same C variable but my have a different mcasttype
800 # NOTE: if the adaptation is useless then `value
` is returned as it.
801 # ENSURE: `result
.name
== value
.name
`
802 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
804 mtype = self.anchor(mtype)
805 var valmtype = value.mcasttype
806 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
810 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
811 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
814 var res = new RuntimeVariable(value.name, valmtype, mtype)
819 # Generate a super call from a method definition
820 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
822 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
824 # Box or unbox a value to another type iff a C type conversion is needed
825 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
826 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
828 # Generate a polymorphic subtype test
829 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
831 # Generate the code required to dynamically check if 2 objects share the same runtime type
832 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
834 # Generate a Nit "is" for two runtime_variables
835 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
839 # Generate a static call on a method definition
840 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
842 # Generate a polymorphic send for the method `m
` and the arguments `args
`
843 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
845 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
846 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
848 assert t isa MClassType
849 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
850 return self.call(propdef, t, args)
853 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
854 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
856 assert t isa MClassType
857 m = m.lookup_next_definition(self.compiler.mainmodule, t)
858 return self.call(m, t, args)
861 # Attributes handling
863 # Generate a polymorphic attribute is_set test
864 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
866 # Generate a polymorphic attribute read
867 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
869 # Generate a polymorphic attribute write
870 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
874 # Add a check and an abort for a null reciever if needed
875 fun check_recv_notnull(recv: RuntimeVariable)
877 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
879 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
881 self.add("if ({recv} == NULL) \{")
882 self.add_abort("Receiver is null")
889 private var names: HashSet[String] = new HashSet[String]
890 private var last: Int = 0
892 # Return a new name based on `s
` and unique in the visitor
893 fun get_name(s: String): String
895 if not self.names.has(s) then
899 var i = self.last + 1
902 if not self.names.has(s2) then
911 # Return an unique and stable identifier associated with an escapemark
912 fun escapemark_name(e: nullable EscapeMark): String
915 if escapemark_names.has_key(e) then return escapemark_names[e]
917 if name == null then name = "label"
918 name = get_name(name)
919 escapemark_names[e] = name
923 private var escapemark_names = new HashMap[EscapeMark, String]
925 # Return a "const char*" variable associated to the classname of the dynamic type of an object
926 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
927 fun class_name_string(value: RuntimeVariable): String is abstract
931 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
933 # Return the local runtime_variable associated to a Nit local variable
934 fun variable(variable: Variable): RuntimeVariable
936 if self.variables.has_key(variable) then
937 return self.variables[variable]
939 var name = self.get_name("var_{variable.name}")
940 var mtype = variable.declared_type.as(not null)
941 mtype = self.anchor(mtype)
942 var res = new RuntimeVariable(name, mtype, mtype)
943 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
944 self.variables[variable] = res
949 # Return a new uninitialized local runtime_variable
950 fun new_var(mtype: MType): RuntimeVariable
952 mtype = self.anchor(mtype)
953 var name = self.get_name("var")
954 var res = new RuntimeVariable(name, mtype, mtype)
955 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
959 # Return a new uninitialized named runtime_variable
960 fun new_named_var(mtype: MType, name: String): RuntimeVariable
962 mtype = self.anchor(mtype)
963 var res = new RuntimeVariable(name, mtype, mtype)
964 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
968 # Correctly assign a left and a right value
969 # Boxing and unboxing is performed if required
970 fun assign(left, right: RuntimeVariable)
972 right = self.autobox(right, left.mtype)
973 self.add("{left} = {right};")
978 # Generate a alloc-instance + init-attributes
979 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
981 # Generate an integer value
982 fun int_instance(value: Int): RuntimeVariable
984 var res = self.new_var(self.get_class("Int").mclass_type)
985 self.add("{res} = {value};")
989 # Generate a string value
990 fun string_instance(string: String): RuntimeVariable
992 var mtype = self.get_class("String").mclass_type
993 var name = self.get_name("varonce")
994 self.add_decl("static {mtype.ctype} {name};")
995 var res = self.new_var(mtype)
996 self.add("if ({name}) \{")
997 self.add("{res} = {name};")
998 self.add("\} else \{")
999 var native_mtype = self.get_class("NativeString").mclass_type
1000 var nat = self.new_var(native_mtype)
1001 self.add("{nat} = \"{string.escape_to_c}\";")
1002 var length = self.int_instance(string.length)
1003 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1004 self.add("{name} = {res};")
1009 # Generate an array value
1010 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1012 # Get an instance of a array for a vararg
1013 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1017 # Add a line in the main part of the generated C
1018 fun add(s: String) do self.writer.lines.add(s)
1021 # (used for local or global declaration)
1022 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1024 # Request the presence of a global declaration
1025 fun require_declaration(key: String)
1027 self.writer.file.required_declarations.add(key)
1030 # Add a declaration in the local-header
1031 # The declaration is ensured to be present once
1032 fun declare_once(s: String)
1034 self.compiler.provide_declaration(s, s)
1035 self.require_declaration(s)
1038 # look for a needed .h and .c file for a given .nit source-file
1039 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1040 fun add_extern(file: String)
1042 file = file.strip_extension(".nit")
1043 var tryfile = file + ".nit.h"
1044 if tryfile.file_exists then
1045 self.declare_once("#include \"{tryfile.basename("")}\"")
1046 self.compiler.files_to_copy.add(tryfile)
1048 tryfile = file + "_nit.h"
1049 if tryfile.file_exists then
1050 self.declare_once("#include \"{tryfile.basename("")}\"")
1051 self.compiler.files_to_copy.add(tryfile)
1054 if self.compiler.seen_extern.has(file) then return
1055 self.compiler.seen_extern.add(file)
1056 tryfile = file + ".nit.c"
1057 if not tryfile.file_exists then
1058 tryfile = file + "_nit.c"
1059 if not tryfile.file_exists then return
1061 var f = new ExternCFile(tryfile.basename(""), "")
1062 self.compiler.extern_bodies.add(f)
1063 self.compiler.files_to_copy.add(tryfile)
1066 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1067 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1069 var res = new_var(mtype)
1070 self.add("{res} = {cexpr};")
1074 # Generate generic abort
1075 # used by aborts, asserts, casts, etc.
1076 fun add_abort(message: String)
1078 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1084 if self.current_node != null and self.current_node.location.file != null then
1085 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1087 self.add("fprintf(stderr, \"\\n\");")
1089 self.add("show_backtrace(1);")
1092 # Add a dynamic cast
1093 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1095 var res = self.type_test(value, mtype, tag)
1096 self.add("if (!{res}) \{")
1097 var cn = self.class_name_string(value)
1098 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1103 # Generate a return with the value `s
`
1104 fun ret(s: RuntimeVariable)
1106 self.assign(self.frame.returnvar.as(not null), s)
1107 self.add("goto {self.frame.returnlabel.as(not null)};")
1110 # Compile a statement (if any)
1111 fun stmt(nexpr: nullable AExpr)
1113 if nexpr == null then return
1114 var old = self.current_node
1115 self.current_node = nexpr
1117 self.current_node = old
1120 # Compile an expression an return its result
1121 # `mtype
` is the expected return type, pass null if no specific type is expected.
1122 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1124 var old = self.current_node
1125 self.current_node = nexpr
1126 var res = nexpr.expr(self).as(not null)
1127 if mtype != null then
1128 mtype = self.anchor(mtype)
1129 res = self.autobox(res, mtype)
1131 res = autoadapt(res, nexpr.mtype.as(not null))
1132 var implicit_cast_to = nexpr.implicit_cast_to
1133 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1134 add_cast(res, implicit_cast_to, "auto")
1135 res = autoadapt(res, implicit_cast_to)
1137 self.current_node = old
1141 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1142 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1144 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1145 fun debug(message: String)
1147 var node = self.current_node
1148 if node == null then
1149 print "?: {message}"
1153 self.add("/* DEBUG: {message} */")
1157 # A C function associated to a Nit method
1158 # Because of customization, a given Nit method can be compiler more that once
1159 abstract class AbstractRuntimeFunction
1161 type COMPILER: AbstractCompiler
1162 type VISITOR: AbstractCompilerVisitor
1164 # The associated Nit method
1165 var mmethoddef: MMethodDef
1167 # The mangled c name of the runtime_function
1168 # Subclasses should redefine `build_c_name
` instead
1171 var res = self.c_name_cache
1172 if res != null then return res
1173 res = self.build_c_name
1174 self.c_name_cache = res
1178 # Non cached version of `c_name
`
1179 protected fun build_c_name: String is abstract
1181 protected var c_name_cache: nullable String writable = null
1183 # Implements a call of the runtime_function
1184 # May inline the body or generate a C function call
1185 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1187 # Generate the code for the `AbstractRuntimeFunction`
1188 # Warning: compile more than once compilation makes CC unhappy
1189 fun compile_to_c(compiler: COMPILER) is abstract
1192 # A runtime variable hold a runtime value in C.
1193 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1195 # 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.
1196 class RuntimeVariable
1197 # The name of the variable in the C code
1200 # The static type of the variable (as declard in C)
1203 # The current casted type of the variable (as known in Nit)
1204 var mcasttype: MType writable
1206 # If the variable exaclty a mcasttype?
1207 # false (usual value) means that the variable is a mcasttype or a subtype.
1208 var is_exact: Bool writable = false
1210 init(name: String, mtype: MType, mcasttype: MType)
1214 self.mcasttype = mcasttype
1215 assert not mtype.need_anchor
1216 assert not mcasttype.need_anchor
1219 redef fun to_s do return name
1224 if self.is_exact then
1225 exact_str = " exact"
1230 if self.mtype == self.mcasttype then
1231 type_str = "{mtype}{exact_str}"
1233 type_str = "{mtype}({mcasttype}{exact_str})"
1235 return "<{name}:{type_str}>"
1239 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1242 type VISITOR: AbstractCompilerVisitor
1244 # The associated visitor
1245 var visitor: VISITOR
1247 # The executed property.
1248 # A Method in case of a call, an attribute in case of a default initialization.
1249 var mpropdef: MPropDef
1251 # The static type of the receiver
1252 var receiver: MClassType
1254 # Arguments of the method (the first is the receiver)
1255 var arguments: Array[RuntimeVariable]
1257 # The runtime_variable associated to the return (in a function)
1258 var returnvar: nullable RuntimeVariable writable = null
1260 # The label at the end of the property
1261 var returnlabel: nullable String writable = null
1265 # Return the C type associated to a given Nit static type
1266 fun ctype: String do return "val*"
1268 fun ctypename: String do return "val"
1270 # Return the name of the C structure associated to a Nit live type
1271 fun c_name: String is abstract
1272 protected var c_name_cache: nullable String protected writable
1275 redef class MClassType
1278 var res = self.c_name_cache
1279 if res != null then return res
1280 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1281 self.c_name_cache = res
1285 redef fun ctype: String
1287 if mclass.name == "Int" then
1289 else if mclass.name == "Bool" then
1291 else if mclass.name == "Char" then
1293 else if mclass.name == "Float" then
1295 else if mclass.name == "NativeString" then
1297 else if mclass.name == "NativeArray" then
1299 else if mclass.kind == extern_kind then
1306 redef fun ctypename: String
1308 if mclass.name == "Int" then
1310 else if mclass.name == "Bool" then
1312 else if mclass.name == "Char" then
1314 else if mclass.name == "Float" then
1316 else if mclass.name == "NativeString" then
1318 else if mclass.name == "NativeArray" then
1319 #return "{self.arguments.first.ctype}*"
1321 else if mclass.kind == extern_kind then
1329 redef class MGenericType
1332 var res = self.c_name_cache
1333 if res != null then return res
1335 for t in self.arguments do
1336 res = res + t.c_name
1338 self.c_name_cache = res
1343 redef class MParameterType
1346 var res = self.c_name_cache
1347 if res != null then return res
1348 res = "{self.mclass.c_name}_FT{self.rank}"
1349 self.c_name_cache = res
1354 redef class MVirtualType
1357 var res = self.c_name_cache
1358 if res != null then return res
1359 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1360 self.c_name_cache = res
1365 redef class MNullableType
1368 var res = self.c_name_cache
1369 if res != null then return res
1370 res = "nullable_{self.mtype.c_name}"
1371 self.c_name_cache = res
1377 # Return the name of the C structure associated to a Nit class
1378 fun c_name: String do
1379 var res = self.c_name_cache
1380 if res != null then return res
1381 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1382 self.c_name_cache = res
1385 private var c_name_cache: nullable String
1388 redef class MProperty
1389 fun c_name: String do
1390 var res = self.c_name_cache
1391 if res != null then return res
1392 res = "{self.intro.c_name}"
1393 self.c_name_cache = res
1396 private var c_name_cache: nullable String
1399 redef class MPropDef
1400 type VISITOR: AbstractCompilerVisitor
1402 private var c_name_cache: nullable String
1404 # The mangled name associated to the property
1407 var res = self.c_name_cache
1408 if res != null then return res
1409 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1410 self.c_name_cache = res
1415 redef class MMethodDef
1416 # Can the body be inlined?
1417 fun can_inline(v: VISITOR): Bool
1419 var modelbuilder = v.compiler.modelbuilder
1420 if modelbuilder.mpropdef2npropdef.has_key(self) then
1421 var npropdef = modelbuilder.mpropdef2npropdef[self]
1422 return npropdef.can_inline
1423 else if self.mproperty.name == "init" then
1424 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1431 # Inline the body in another visitor
1432 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1434 var modelbuilder = v.compiler.modelbuilder
1435 if modelbuilder.mpropdef2npropdef.has_key(self) then
1436 var npropdef = modelbuilder.mpropdef2npropdef[self]
1437 var oldnode = v.current_node
1438 v.current_node = npropdef
1439 self.compile_parameter_check(v, arguments)
1440 npropdef.compile_to_c(v, self, arguments)
1441 v.current_node = oldnode
1442 else if self.mproperty.name == "init" then
1443 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1444 var oldnode = v.current_node
1445 v.current_node = nclassdef
1446 self.compile_parameter_check(v, arguments)
1447 nclassdef.compile_to_c(v, self, arguments)
1448 v.current_node = oldnode
1455 # Generate type checks in the C code to check covariant parameters
1456 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1458 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1460 for i in [0..msignature.arity[ do
1461 # skip test for vararg since the array is instantiated with the correct polymorphic type
1462 if msignature.vararg_rank == i then continue
1464 # skip if the cast is not required
1465 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1466 if not origmtype.need_anchor then continue
1468 # get the parameter type
1469 var mtype = self.msignature.mparameters[i].mtype
1472 # note that v decides if and how to implements the cast
1473 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1474 v.add_cast(arguments[i+1], mtype, "covariance")
1481 redef class APropdef
1482 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1484 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1485 debug("Not yet implemented")
1488 fun can_inline: Bool do return true
1491 redef class AConcreteMethPropdef
1492 redef fun compile_to_c(v, mpropdef, arguments)
1494 for i in [0..mpropdef.msignature.arity[ do
1495 var variable = self.n_signature.n_params[i].variable.as(not null)
1496 v.assign(v.variable(variable), arguments[i+1])
1498 # Call the implicit super-init
1499 var auto_super_inits = self.auto_super_inits
1500 if auto_super_inits != null then
1501 var selfarg = [arguments.first]
1502 for auto_super_init in auto_super_inits do
1503 if auto_super_init.intro.msignature.arity == 0 then
1504 v.send(auto_super_init, selfarg)
1506 v.send(auto_super_init, arguments)
1510 v.stmt(self.n_block)
1513 redef fun can_inline
1515 if self.auto_super_inits != null then return false
1516 var nblock = self.n_block
1517 if nblock == null then return true
1518 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1519 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1524 redef class AInternMethPropdef
1525 redef fun compile_to_c(v, mpropdef, arguments)
1527 var pname = mpropdef.mproperty.name
1528 var cname = mpropdef.mclassdef.mclass.name
1529 var ret = mpropdef.msignature.return_mtype
1531 ret = v.resolve_for(ret, arguments.first)
1533 if pname != "==" and pname != "!=" then
1534 v.adapt_signature(mpropdef, arguments)
1536 if cname == "Int" then
1537 if pname == "output" then
1538 v.add("printf(\"%ld\\n\", {arguments.first});")
1540 else if pname == "object_id" then
1541 v.ret(arguments.first)
1543 else if pname == "+" then
1544 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1546 else if pname == "-" then
1547 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1549 else if pname == "unary -" then
1550 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1552 else if pname == "succ" then
1553 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1555 else if pname == "prec" then
1556 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1558 else if pname == "*" then
1559 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1561 else if pname == "/" then
1562 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1564 else if pname == "%" then
1565 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1567 else if pname == "lshift" then
1568 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1570 else if pname == "rshift" then
1571 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1573 else if pname == "==" then
1574 v.ret(v.equal_test(arguments[0], arguments[1]))
1576 else if pname == "!=" then
1577 var res = v.equal_test(arguments[0], arguments[1])
1578 v.ret(v.new_expr("!{res}", ret.as(not null)))
1580 else if pname == "<" then
1581 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1583 else if pname == ">" then
1584 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1586 else if pname == "<=" then
1587 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1589 else if pname == ">=" then
1590 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1592 else if pname == "to_f" then
1593 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1595 else if pname == "ascii" then
1596 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1599 else if cname == "Char" then
1600 if pname == "output" then
1601 v.add("printf(\"%c\", {arguments.first});")
1603 else if pname == "object_id" then
1604 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1606 else if pname == "+" then
1607 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1609 else if pname == "-" then
1610 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1612 else if pname == "==" then
1613 v.ret(v.equal_test(arguments[0], arguments[1]))
1615 else if pname == "!=" then
1616 var res = v.equal_test(arguments[0], arguments[1])
1617 v.ret(v.new_expr("!{res}", ret.as(not null)))
1619 else if pname == "succ" then
1620 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1622 else if pname == "prec" then
1623 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1625 else if pname == "<" then
1626 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1628 else if pname == ">" then
1629 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", 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 == "to_i" then
1638 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1640 else if pname == "ascii" then
1641 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1644 else if cname == "Bool" then
1645 if pname == "output" then
1646 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1648 else if pname == "object_id" then
1649 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1651 else if pname == "==" then
1652 v.ret(v.equal_test(arguments[0], arguments[1]))
1654 else if pname == "!=" then
1655 var res = v.equal_test(arguments[0], arguments[1])
1656 v.ret(v.new_expr("!{res}", ret.as(not null)))
1659 else if cname == "Float" then
1660 if pname == "output" then
1661 v.add("printf(\"%f\\n\", {arguments.first});")
1663 else if pname == "object_id" then
1664 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1666 else if pname == "+" then
1667 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1669 else if pname == "-" then
1670 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1672 else if pname == "unary -" then
1673 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1675 else if pname == "succ" then
1676 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1678 else if pname == "prec" then
1679 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1681 else if pname == "*" then
1682 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1684 else if pname == "/" then
1685 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1687 else if pname == "==" then
1688 v.ret(v.equal_test(arguments[0], arguments[1]))
1690 else if pname == "!=" then
1691 var res = v.equal_test(arguments[0], arguments[1])
1692 v.ret(v.new_expr("!{res}", ret.as(not null)))
1694 else if pname == "<" then
1695 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1697 else if pname == ">" then
1698 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1700 else if pname == "<=" then
1701 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1703 else if pname == ">=" then
1704 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1706 else if pname == "to_i" then
1707 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1710 else if cname == "NativeString" then
1711 if pname == "[]" then
1712 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1714 else if pname == "[]=" then
1715 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1717 else if pname == "copy_to" then
1718 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1720 else if pname == "atoi" then
1721 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1724 else if cname == "NativeArray" then
1725 v.native_array_def(pname, ret, arguments)
1728 if pname == "exit" then
1729 v.add("exit({arguments[1]});")
1731 else if pname == "sys" then
1732 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1734 else if pname == "calloc_string" then
1735 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1737 else if pname == "calloc_array" then
1738 v.calloc_array(ret.as(not null), arguments)
1740 else if pname == "object_id" then
1741 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1743 else if pname == "is_same_type" then
1744 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1746 else if pname == "is_same_instance" then
1747 v.ret(v.equal_test(arguments[0], arguments[1]))
1749 else if pname == "output_class_name" then
1750 var nat = v.class_name_string(arguments.first)
1751 v.add("printf(\"%s\\n\", {nat});")
1753 else if pname == "native_class_name" then
1754 var nat = v.class_name_string(arguments.first)
1755 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1757 else if pname == "force_garbage_collection" then
1758 v.add("nit_gcollect();")
1760 else if pname == "native_argc" then
1761 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1763 else if pname == "native_argv" then
1764 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1767 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1768 debug("Not implemented {mpropdef}")
1772 redef class AExternMethPropdef
1773 redef fun compile_to_c(v, mpropdef, arguments)
1776 var nextern = self.n_extern
1777 if nextern == null then
1778 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1779 v.add("show_backtrace(1);")
1782 externname = nextern.text.substring(1, nextern.text.length-2)
1783 if location.file != null then
1784 var file = location.file.filename
1787 var res: nullable RuntimeVariable = null
1788 var ret = mpropdef.msignature.return_mtype
1790 ret = v.resolve_for(ret, arguments.first)
1791 res = v.new_var(ret)
1793 v.adapt_signature(mpropdef, arguments)
1796 v.add("{externname}({arguments.join(", ")});")
1798 v.add("{res} = {externname}({arguments.join(", ")});")
1804 redef class AExternInitPropdef
1805 redef fun compile_to_c(v, mpropdef, arguments)
1808 var nextern = self.n_extern
1809 if nextern == null then
1810 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1811 v.add("show_backtrace(1);")
1814 externname = nextern.text.substring(1, nextern.text.length-2)
1815 if location.file != null then
1816 var file = location.file.filename
1819 v.adapt_signature(mpropdef, arguments)
1820 var ret = arguments.first.mtype
1821 var res = v.new_var(ret)
1825 v.add("{res} = {externname}({arguments.join(", ")});")
1830 redef class AAttrPropdef
1831 redef fun compile_to_c(v, mpropdef, arguments)
1833 if arguments.length == 1 then
1834 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1835 v.assign(v.frame.returnvar.as(not null), res)
1837 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1841 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1843 var nexpr = self.n_expr
1844 if nexpr != null then
1845 var oldnode = v.current_node
1846 v.current_node = self
1847 var old_frame = v.frame
1848 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1850 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1851 v.write_attribute(self.mpropdef.mproperty, recv, value)
1853 v.current_node = oldnode
1857 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1859 var nexpr = self.n_expr
1860 if nexpr != null then return
1862 var oldnode = v.current_node
1863 v.current_node = self
1864 var old_frame = v.frame
1865 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1867 # Force read to check the initialization
1868 v.read_attribute(self.mpropdef.mproperty, recv)
1870 v.current_node = oldnode
1874 redef class AClassdef
1875 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1877 if mpropdef == self.mfree_init then
1878 var super_inits = self.super_inits
1879 if super_inits != null then
1880 assert arguments.length == 1
1881 for su in super_inits do
1882 v.send(su, arguments)
1886 var recv = arguments.first
1888 # Collect undefined attributes
1889 for npropdef in self.n_propdefs do
1890 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1891 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1901 redef class ADeferredMethPropdef
1902 redef fun compile_to_c(v, mpropdef, arguments) do
1903 var cn = v.class_name_string(arguments.first)
1904 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1907 redef fun can_inline do return true
1911 # Try to compile self as an expression
1912 # Do not call this method directly, use `v
.expr
` instead
1913 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1915 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1916 var mtype = self.mtype
1917 if mtype == null then
1920 var res = v.new_var(mtype)
1921 v.add("/* {res} = NOT YET {class_name} */")
1926 # Try to compile self as a statement
1927 # Do not call this method directly, use `v
.stmt
` instead
1928 private fun stmt(v: AbstractCompilerVisitor)
1931 if res != null then v.add("{res};")
1935 redef class ABlockExpr
1938 for e in self.n_expr do v.stmt(e)
1942 var last = self.n_expr.last
1943 for e in self.n_expr do
1944 if e == last then break
1947 return v.expr(last, null)
1951 redef class AVardeclExpr
1954 var variable = self.variable.as(not null)
1955 var ne = self.n_expr
1957 var i = v.expr(ne, variable.declared_type)
1958 v.assign(v.variable(variable), i)
1963 redef class AVarExpr
1966 var res = v.variable(self.variable.as(not null))
1967 var mtype = self.mtype.as(not null)
1968 return v.autoadapt(res, mtype)
1972 redef class AVarAssignExpr
1975 var variable = self.variable.as(not null)
1976 var i = v.expr(self.n_value, variable.declared_type)
1977 v.assign(v.variable(variable), i)
1981 var variable = self.variable.as(not null)
1982 var i = v.expr(self.n_value, variable.declared_type)
1983 v.assign(v.variable(variable), i)
1988 redef class AVarReassignExpr
1991 var variable = self.variable.as(not null)
1992 var vari = v.variable(variable)
1993 var value = v.expr(self.n_value, variable.declared_type)
1994 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
1996 v.assign(v.variable(variable), res)
2000 redef class ASelfExpr
2001 redef fun expr(v) do return v.frame.arguments.first
2004 redef class AContinueExpr
2005 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2008 redef class ABreakExpr
2009 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2012 redef class AReturnExpr
2015 var nexpr = self.n_expr
2016 if nexpr != null then
2017 var returnvar = v.frame.returnvar.as(not null)
2018 var i = v.expr(nexpr, returnvar.mtype)
2019 v.assign(returnvar, i)
2021 v.add("goto {v.frame.returnlabel.as(not null)};")
2025 redef class AAbortExpr
2026 redef fun stmt(v) do v.add_abort("Aborted")
2032 var cond = v.expr_bool(self.n_expr)
2033 v.add("if ({cond})\{")
2042 var res = v.new_var(self.mtype.as(not null))
2043 var cond = v.expr_bool(self.n_expr)
2044 v.add("if ({cond})\{")
2045 v.assign(res, v.expr(self.n_then.as(not null), null))
2047 v.assign(res, v.expr(self.n_else.as(not null), null))
2053 redef class AIfexprExpr
2056 var res = v.new_var(self.mtype.as(not null))
2057 var cond = v.expr_bool(self.n_expr)
2058 v.add("if ({cond})\{")
2059 v.assign(res, v.expr(self.n_then, null))
2061 v.assign(res, v.expr(self.n_else, null))
2070 v.stmt(self.n_block)
2071 var escapemark = self.escapemark
2072 if escapemark != null then
2073 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2078 redef class AWhileExpr
2082 var cond = v.expr_bool(self.n_expr)
2083 v.add("if (!{cond}) break;")
2084 v.stmt(self.n_block)
2085 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2087 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2091 redef class ALoopExpr
2095 v.stmt(self.n_block)
2096 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2098 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2102 redef class AForExpr
2105 # Shortcut on explicit range
2106 # Avoid the instantiation of the range and the iterator
2107 var nexpr = self.n_expr
2108 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2109 var from = v.expr(nexpr.n_expr, null)
2110 var to = v.expr(nexpr.n_expr2, null)
2111 var variable = v.variable(variables.first)
2113 v.assign(variable, from)
2114 v.add("for(;;) \{ /* shortcut range */")
2116 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2118 v.add("if(!{ok}) break;")
2120 v.stmt(self.n_block)
2122 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2123 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2125 v.assign(variable, succ)
2127 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2131 var cl = v.expr(self.n_expr, null)
2132 var it_meth = self.method_iterator
2133 assert it_meth != null
2134 var it = v.send(it_meth, [cl])
2137 var isok_meth = self.method_is_ok
2138 assert isok_meth != null
2139 var ok = v.send(isok_meth, [it])
2141 v.add("if(!{ok}) break;")
2142 if self.variables.length == 1 then
2143 var item_meth = self.method_item
2144 assert item_meth != null
2145 var i = v.send(item_meth, [it])
2147 v.assign(v.variable(variables.first), i)
2148 else if self.variables.length == 2 then
2149 var key_meth = self.method_key
2150 assert key_meth != null
2151 var i = v.send(key_meth, [it])
2153 v.assign(v.variable(variables[0]), i)
2154 var item_meth = self.method_item
2155 assert item_meth != null
2156 i = v.send(item_meth, [it])
2158 v.assign(v.variable(variables[1]), i)
2162 v.stmt(self.n_block)
2163 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2164 var next_meth = self.method_next
2165 assert next_meth != null
2166 v.send(next_meth, [it])
2168 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2172 redef class AAssertExpr
2175 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2177 var cond = v.expr_bool(self.n_expr)
2178 v.add("if (!{cond}) \{")
2182 v.add_abort("Assert '{nid.text}' failed")
2184 v.add_abort("Assert failed")
2193 var res = v.new_var(self.mtype.as(not null))
2194 var i1 = v.expr_bool(self.n_expr)
2195 v.add("if ({i1}) \{")
2198 var i2 = v.expr_bool(self.n_expr2)
2199 v.add("{res} = {i2};")
2205 redef class AImpliesExpr
2208 var res = v.new_var(self.mtype.as(not null))
2209 var i1 = v.expr_bool(self.n_expr)
2210 v.add("if (!{i1}) \{")
2213 var i2 = v.expr_bool(self.n_expr2)
2214 v.add("{res} = {i2};")
2220 redef class AAndExpr
2223 var res = v.new_var(self.mtype.as(not null))
2224 var i1 = v.expr_bool(self.n_expr)
2225 v.add("if (!{i1}) \{")
2228 var i2 = v.expr_bool(self.n_expr2)
2229 v.add("{res} = {i2};")
2235 redef class ANotExpr
2238 var cond = v.expr_bool(self.n_expr)
2239 return v.new_expr("!{cond}", self.mtype.as(not null))
2243 redef class AOrElseExpr
2246 var res = v.new_var(self.mtype.as(not null))
2247 var i1 = v.expr(self.n_expr, null)
2248 v.add("if ({i1}!=NULL) \{")
2251 var i2 = v.expr(self.n_expr2, null)
2258 redef class AIntExpr
2259 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2262 redef class AFloatExpr
2263 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2266 redef class ACharExpr
2267 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2270 redef class AArrayExpr
2273 var mtype = self.mtype.as(MClassType).arguments.first
2274 var array = new Array[RuntimeVariable]
2275 for nexpr in self.n_exprs.n_exprs do
2276 var i = v.expr(nexpr, mtype)
2279 return v.array_instance(array, mtype)
2283 redef class AStringFormExpr
2284 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2287 redef class ASuperstringExpr
2290 var array = new Array[RuntimeVariable]
2291 for ne in self.n_exprs do
2292 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2293 var i = v.expr(ne, null)
2296 var a = v.array_instance(array, v.object_type)
2297 var res = v.send(v.get_property("to_s", a.mtype), [a])
2302 redef class ACrangeExpr
2305 var i1 = v.expr(self.n_expr, null)
2306 var i2 = v.expr(self.n_expr2, null)
2307 var mtype = self.mtype.as(MClassType)
2308 var res = v.init_instance(mtype)
2309 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2314 redef class AOrangeExpr
2317 var i1 = v.expr(self.n_expr, null)
2318 var i2 = v.expr(self.n_expr2, null)
2319 var mtype = self.mtype.as(MClassType)
2320 var res = v.init_instance(mtype)
2321 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2326 redef class ATrueExpr
2327 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2330 redef class AFalseExpr
2331 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2334 redef class ANullExpr
2335 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2338 redef class AIsaExpr
2341 var i = v.expr(self.n_expr, null)
2342 return v.type_test(i, self.cast_type.as(not null), "isa")
2346 redef class AAsCastExpr
2349 var i = v.expr(self.n_expr, null)
2350 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2352 v.add_cast(i, self.mtype.as(not null), "as")
2357 redef class AAsNotnullExpr
2360 var i = v.expr(self.n_expr, null)
2361 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2363 v.add("if ({i} == NULL) \{")
2364 v.add_abort("Cast failed")
2370 redef class AParExpr
2371 redef fun expr(v) do return v.expr(self.n_expr, null)
2374 redef class AOnceExpr
2377 var mtype = self.mtype.as(not null)
2378 var name = v.get_name("varonce")
2379 var guard = v.get_name(name + "_guard")
2380 v.add_decl("static {mtype.ctype} {name};")
2381 v.add_decl("static int {guard};")
2382 var res = v.new_var(mtype)
2383 v.add("if ({guard}) \{")
2384 v.add("{res} = {name};")
2386 var i = v.expr(self.n_expr, mtype)
2387 v.add("{res} = {i};")
2388 v.add("{name} = {res};")
2389 v.add("{guard} = 1;")
2395 redef class ASendExpr
2398 var recv = v.expr(self.n_expr, null)
2400 for a in self.raw_arguments.as(not null) do
2401 args.add(v.expr(a, null))
2403 return v.compile_callsite(self.callsite.as(not null), args)
2407 redef class ASendReassignFormExpr
2410 var recv = v.expr(self.n_expr, null)
2412 for a in self.raw_arguments.as(not null) do
2413 args.add(v.expr(a, null))
2415 var value = v.expr(self.n_value, null)
2417 var left = v.compile_callsite(self.callsite.as(not null), args)
2420 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2424 v.compile_callsite(self.write_callsite.as(not null), args)
2428 redef class ASuperExpr
2431 var recv = v.frame.arguments.first
2433 for a in self.n_args.n_exprs do
2434 args.add(v.expr(a, null))
2436 if args.length == 1 then
2437 args = v.frame.arguments
2440 var callsite = self.callsite
2441 if callsite != null then
2442 if callsite.mproperty.intro.msignature.arity == 0 then
2446 var res = v.compile_callsite(callsite, args)
2450 # stantard call-next-method
2451 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2455 redef class ANewExpr
2458 var mtype = self.mtype.as(MClassType)
2460 var ctype = mtype.ctype
2461 if ctype == "val*" then
2462 recv = v.init_instance(mtype)
2463 else if ctype == "void*" then
2464 recv = v.new_expr("NULL/*special!*/", mtype)
2466 debug("cannot new {mtype}")
2470 for a in self.n_args.n_exprs do
2471 args.add(v.expr(a, null))
2473 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2474 if res2 != null then
2475 #self.debug("got {res2} from {mproperty}. drop {recv}")
2482 redef class AAttrExpr
2485 var recv = v.expr(self.n_expr, null)
2486 var mproperty = self.mproperty.as(not null)
2487 return v.read_attribute(mproperty, recv)
2491 redef class AAttrAssignExpr
2494 var recv = v.expr(self.n_expr, null)
2495 var i = v.expr(self.n_value, null)
2496 var mproperty = self.mproperty.as(not null)
2497 v.write_attribute(mproperty, recv, i)
2501 redef class AAttrReassignExpr
2504 var recv = v.expr(self.n_expr, null)
2505 var value = v.expr(self.n_value, null)
2506 var mproperty = self.mproperty.as(not null)
2507 var attr = v.read_attribute(mproperty, recv)
2508 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2510 v.write_attribute(mproperty, recv, res)
2514 redef class AIssetAttrExpr
2517 var recv = v.expr(self.n_expr, null)
2518 var mproperty = self.mproperty.as(not null)
2519 return v.isset_attribute(mproperty, recv)
2523 redef class ADebugTypeExpr
2532 redef class Array[E]
2533 # Return a new `Array` with the elements only contened in self and not in `o
`
2534 fun -(o: Array[E]): Array[E] do
2535 var res = new Array[E]
2536 for e in self do if not o.has(e) then res.add(e)
2542 # All `MProperty` associated to all `MClassDef` of `mclass
`
2543 fun properties(mclass: MClass): Set[MProperty] do
2544 if not self.properties_cache.has_key(mclass) then
2545 var properties = new HashSet[MProperty]
2546 var parents = new Array[MClass]
2547 if self.flatten_mclass_hierarchy.has(mclass) then
2548 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2550 for parent in parents do
2551 properties.add_all(self.properties(parent))
2553 for mclassdef in mclass.mclassdefs do
2554 for mprop in mclassdef.intro_mproperties do
2555 properties.add(mprop)
2558 self.properties_cache[mclass] = properties
2560 return properties_cache[mclass]
2562 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2566 # Does this module use the legacy native interface?
2567 fun uses_legacy_ni: Bool is abstract
2569 # Write FFI results to file
2570 fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
2572 # Write nitni results to file
2573 fun finalize_nitni(v: AbstractCompilerVisitor) is abstract