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 redef init(model
, toolcontext
)
73 if toolcontext
.opt_no_stacktrace
.value
and toolcontext
.opt_stacktrace
.value
then
74 print
"Cannot use --nit-stacktrace when --no-stacktrace is activated"
81 # The compilation directory
82 var compile_dir
: String
84 # Simple indirection to `Toolchain::write_and_make`
85 protected fun write_and_make
(compiler
: AbstractCompiler)
87 var platform
= compiler
.mainmodule
.target_platform
(toolcontext
)
89 if platform
== null then
90 toolchain
= new MakefileToolchain(toolcontext
)
92 toolchain
= platform
.toolchain
(toolcontext
)
94 compile_dir
= toolchain
.compile_dir
95 toolchain
.write_and_make compiler
100 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
104 var toolcontext
: ToolContext
106 fun compile_dir
: String
108 var compile_dir
= toolcontext
.opt_compile_dir
.value
109 if compile_dir
== null then compile_dir
= ".nit_compile"
113 fun write_and_make
(compiler
: AbstractCompiler) is abstract
116 class MakefileToolchain
118 # The list of directories to search for included C headers (-I for C compilers)
119 # The list is initially set with :
120 # * the toolcontext --cc-path option
121 # * the NIT_CC_PATH environment variable
122 # * some heuristics including the NIT_DIR environment variable and the progname of the process
123 # Path can be added (or removed) by the client
124 var cc_paths
= new Array[String]
126 protected fun gather_cc_paths
128 # Look for the the Nit clib path
129 var path_env
= "NIT_DIR".environ
130 if not path_env
.is_empty
then
131 var libname
= "{path_env}/clib"
132 if libname
.file_exists
then cc_paths
.add
(libname
)
135 var libname
= "{sys.program_name.dirname}/../clib"
136 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
138 if cc_paths
.is_empty
then
139 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
142 # Add user defined cc_paths
143 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
145 path_env
= "NIT_CC_PATH".environ
146 if not path_env
.is_empty
then
147 cc_paths
.append
(path_env
.split_with
(':'))
151 redef fun write_and_make
(compiler
)
155 var mainmodule
= compiler
.mainmodule
156 var compile_dir
= compile_dir
158 # Generate the .h and .c files
159 # A single C file regroups many compiled rumtime functions
160 # 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
162 self.toolcontext
.info
("*** WRITING C ***", 1)
166 var cfiles
= new Array[String]
167 write_files
(compiler
, compile_dir
, cfiles
)
169 # Generate the Makefile
171 write_makefile
(compiler
, compile_dir
, cfiles
)
174 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
176 # Execute the Makefile
178 if self.toolcontext
.opt_no_cc
.value
then return
181 self.toolcontext
.info
("*** COMPILING C ***", 1)
183 compile_c_code
(compiler
, compile_dir
)
186 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
189 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
191 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
193 # Add gc_choser.h to aditionnal bodies
194 var gc_chooser
= new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
195 compiler
.extern_bodies
.add
(gc_chooser
)
196 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
197 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
200 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
201 for m
in compiler
.mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
203 if m
.uses_ffi
or amodule
.uses_legacy_ni
then
204 compiler
.finalize_ffi_for_module
(amodule
)
208 # Copy original .[ch] files to compile_dir
209 for src
in compiler
.files_to_copy
do
210 var basename
= src
.basename
("")
211 var dst
= "{compile_dir}/{basename}"
215 var hfilename
= compiler
.header
.file
.name
+ ".h"
216 var hfilepath
= "{compile_dir}/{hfilename}"
217 var h
= new OFStream.open
(hfilepath
)
218 for l
in compiler
.header
.decl_lines
do
222 for l
in compiler
.header
.lines
do
228 for f
in compiler
.files
do
230 var hfile
: nullable OFStream = null
232 var cfilename
= "{f.name}.0.h"
233 var cfilepath
= "{compile_dir}/{cfilename}"
234 hfile
= new OFStream.open
(cfilepath
)
235 hfile
.write
"#include \"{hfilename}\
"\n"
236 for key
in f
.required_declarations
do
237 if not compiler
.provided_declarations
.has_key
(key
) then
238 print
"No provided declaration for {key}"
241 hfile
.write compiler
.provided_declarations
[key
]
245 var file
: nullable OFStream = null
246 for vis
in f
.writers
do
247 if vis
== compiler
.header
then continue
248 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
249 if total_lines
== 0 then continue
251 if file
== null or count
> 10000 then
253 if file
!= null then file
.close
254 cfilename
= "{f.name}.{i}.c"
255 cfilepath
= "{compile_dir}/{cfilename}"
256 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
257 cfiles
.add
(cfilename
)
258 file
= new OFStream.open
(cfilepath
)
259 file
.write
"#include \"{f.name}.0.h\
"\n"
262 for l
in vis
.decl_lines
do
266 for l
in vis
.lines
do
271 if file
!= null then file
.close
274 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
277 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
279 var mainmodule
= compiler
.mainmodule
281 var outname
= self.toolcontext
.opt_output
.value
282 if outname
== null then
283 outname
= "{mainmodule.name}"
286 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
287 var outpath
= orig_dir
.join_path
(outname
).simplify_path
288 var makename
= "{mainmodule.name}.mk"
289 var makepath
= "{compile_dir}/{makename}"
290 var makefile
= new OFStream.open
(makepath
)
294 cc_includes
+= " -I \"" + p + "\
""
297 var linker_options
= new HashSet[String]
298 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
299 for m
in mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
301 linker_options
.add
(amod
.c_linker_options
)
304 if not toolcontext
.opt_no_stacktrace
.value
then linker_options
.add
("-lunwind")
306 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
307 makefile
.write
("all: {outpath}\n\n")
309 var ofiles
= new Array[String]
310 var dep_rules
= new Array[String]
311 # Compile each generated file
313 var o
= f
.strip_extension
(".c") + ".o"
314 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
319 # Compile each required extern body into a specific .o
320 for f
in compiler
.extern_bodies
do
321 if f
isa ExternCFile then
322 var basename
= f
.filename
.basename
(".c")
323 var o
= "{basename}.extern.o"
324 var ff
= f
.filename
.basename
("")
325 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
329 var o
= f
.makefile_rule_name
330 var ff
= f
.filename
.basename
("")
331 makefile
.write
("{o}: {ff}\n")
332 makefile
.write
("\t{f.makefile_rule_content}\n")
333 dep_rules
.add
(f
.makefile_rule_name
)
335 if f
isa ExternCppFile then ofiles
.add
(o
)
340 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
342 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
344 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
347 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
349 var makename
= "{compiler.mainmodule.name}.mk" # FIXME duplicated from write_makefile
351 var makeflags
= self.toolcontext
.opt_make_flags
.value
352 if makeflags
== null then makeflags
= ""
353 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
356 if self.toolcontext
.verbose_level
>= 3 then
357 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
359 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
362 toolcontext
.error
(null, "make failed! Error code: {res}.")
367 # Singleton that store the knowledge about the compilation process
368 abstract class AbstractCompiler
369 type VISITOR: AbstractCompilerVisitor
371 # Table corresponding c_names to nit names (methods)
372 var names
= new HashMap[String, String]
374 # The main module of the program currently compiled
375 # Is assigned during the separate compilation
376 var mainmodule
: MModule writable
378 # The real main module of the program
379 var realmainmodule
: MModule
381 # The modeulbuilder used to know the model and the AST
382 var modelbuilder
: ModelBuilder protected writable
384 # Is hardening asked? (see --hardening)
385 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
387 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
389 self.mainmodule
= mainmodule
390 self.realmainmodule
= mainmodule
391 self.modelbuilder
= modelbuilder
394 # Force the creation of a new file
395 # The point is to avoid contamination between must-be-compiled-separately files
396 fun new_file
(name
: String): CodeFile
398 var f
= new CodeFile(name
)
403 # The list of all associated files
404 # Used to generate .c files
405 var files
: List[CodeFile] = new List[CodeFile]
407 # Initialize a visitor specific for a compiler engine
408 fun new_visitor
: VISITOR is abstract
410 # Where global declaration are stored (the main .h)
411 var header
: CodeWriter writable
413 # Provide a declaration that can be requested (before or latter) by a visitor
414 fun provide_declaration
(key
: String, s
: String)
416 if self.provided_declarations
.has_key
(key
) then
417 assert self.provided_declarations
[key
] == s
419 self.provided_declarations
[key
] = s
422 private var provided_declarations
= new HashMap[String, String]
424 # Builds the .c and .h files to be used when generating a Stack Trace
425 # Binds the generated C function names to Nit function names
426 fun build_c_to_nit_bindings
428 var compile_dir
= modelbuilder
.compile_dir
430 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
431 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
432 stream
.write
("%define lookup-function-name get_nit_name\n")
433 stream
.write
("struct C_Nit_Names;\n")
435 stream
.write
("####\n")
436 for i
in names
.keys
do
438 stream
.write
(",\t\"")
439 stream.write(names[i])
442 stream
.write
("####\n")
446 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
447 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
448 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
451 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
454 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
458 # This method call compile_header_strucs method that has to be refined
459 fun compile_header
do
461 var toolctx
= modelbuilder
.toolcontext
462 self.header
.add_decl
("#include <stdlib.h>")
463 self.header
.add_decl
("#include <stdio.h>")
464 self.header
.add_decl
("#include <string.h>")
465 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
467 compile_header_structs
468 compile_nitni_structs
470 # Signal handler function prototype
471 self.header
.add_decl
("void show_backtrace(int);")
473 # Global variable used by intern methods
474 self.header
.add_decl
("extern int glob_argc;")
475 self.header
.add_decl
("extern char **glob_argv;")
476 self.header
.add_decl
("extern val *glob_sys;")
479 # Declaration of structures for live Nit types
480 protected fun compile_header_structs
is abstract
482 # Declaration of structures for nitni undelying the FFI
483 protected fun compile_nitni_structs
is abstract
485 # Generate the main C function.
487 # * allocate the Sys object if it exists
488 # * call init if is exists
489 # * call main if it exists
490 fun compile_main_function
492 var v
= self.new_visitor
493 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
494 v
.add_decl
("#include \"c_functions_hash
.h\
"")
496 v
.add_decl
("#include <signal.h>")
497 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
498 v
.add_decl
("#define UNW_LOCAL_ONLY")
499 v
.add_decl
("#include <libunwind.h>")
501 v
.add_decl
("int glob_argc;")
502 v
.add_decl
("char **glob_argv;")
503 v
.add_decl
("val *glob_sys;")
505 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
506 for tag
in count_type_test_tags
do
507 v
.add_decl
("long count_type_test_resolved_{tag};")
508 v
.add_decl
("long count_type_test_unresolved_{tag};")
509 v
.add_decl
("long count_type_test_skipped_{tag};")
510 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
511 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
512 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
516 v
.add_decl
("void sig_handler(int signo)\{")
517 v
.add_decl
("printf(\"Caught signal
: %s\\n\
", strsignal(signo));")
518 v
.add_decl
("show_backtrace(signo);")
521 v
.add_decl
("void show_backtrace (int signo) \{")
522 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
523 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
524 v
.add_decl
("unw_cursor_t cursor;")
525 v
.add_decl
("if(opt==NULL)\{")
526 v
.add_decl
("unw_context_t uc;")
527 v
.add_decl
("unw_word_t ip;")
528 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
529 v
.add_decl
("unw_getcontext(&uc);")
530 v
.add_decl
("unw_init_local(&cursor, &uc);")
531 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
532 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
533 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
534 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
535 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
536 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
537 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
538 v
.add_decl
(" if (recv != 0)\{")
539 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
540 v.add_decl(" \}else\{")
541 v.add_decl(" printf(\"` %s\\n\
", procname);")
544 v
.add_decl
(" printf(\"` %s \\n\",procname);")
547 v.add_decl("printf(\"-------------------------------------------------\\n\");")
548 v.add_decl("free(procname);")
551 v.add_decl("exit(signo);")
554 v.add_decl("int main(int argc, char** argv) \{")
556 v.add("signal(SIGABRT, sig_handler);")
557 v.add("signal(SIGFPE, sig_handler);")
558 v.add("signal(SIGILL, sig_handler);")
559 v.add("signal(SIGINT, sig_handler);")
560 v.add("signal(SIGTERM, sig_handler);")
561 v.add("signal(SIGSEGV, sig_handler);")
563 v.add("glob_argc = argc; glob_argv = argv;")
564 v.add("initialize_gc_option();")
565 var main_type = mainmodule.sys_type
566 if main_type != null then
567 var mainmodule = v.compiler.mainmodule
568 var glob_sys = v.init_instance(main_type)
569 v.add("glob_sys = {glob_sys};")
570 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
571 if main_init != null then
572 v.send(main_init, [glob_sys])
574 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
575 if main_method != null then
576 v.send(main_method, [glob_sys])
580 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
581 v.add_decl("long count_type_test_resolved_total = 0;")
582 v.add_decl("long count_type_test_unresolved_total = 0;")
583 v.add_decl("long count_type_test_skipped_total = 0;")
584 v.add_decl("long count_type_test_total_total = 0;")
585 for tag in count_type_test_tags do
586 v.add_decl("long count_type_test_total_{tag};")
587 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
588 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
589 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
590 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
591 v.add("count_type_test_total_total += count_type_test_total_{tag};")
593 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
594 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
595 var tags = count_type_test_tags.to_a
598 v.add("printf(\"{tag}\");")
599 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
600 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
601 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
602 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
610 # List of additional files required to compile (FFI)
611 var extern_bodies = new Array[ExternFile]
613 # List of source files to copy over to the compile dir
614 var files_to_copy = new Array[String]
616 # This is used to avoid adding an extern file more than once
617 private var seen_extern = new ArraySet[String]
619 # Generate code that initialize the attributes on a new instance
620 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
622 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
623 self.mainmodule.linearize_mclassdefs(cds)
625 var n = self.modelbuilder.mclassdef2nclassdef[cd]
626 for npropdef in n.n_propdefs do
627 if npropdef isa AAttrPropdef then
628 npropdef.init_expr(v, recv)
634 # Generate code that check if an attribute is correctly initialized
635 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
637 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
638 self.mainmodule.linearize_mclassdefs(cds)
640 var n = self.modelbuilder.mclassdef2nclassdef[cd]
641 for npropdef in n.n_propdefs do
642 if npropdef isa AAttrPropdef then
643 npropdef.check_expr(v, recv)
651 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
652 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
653 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
654 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
656 protected fun init_count_type_test_tags: HashMap[String, Int]
658 var res = new HashMap[String, Int]
659 for tag in count_type_test_tags do
665 # Display stats about compilation process
667 # * type tests against resolved types (`x
isa Collection[Animal]`)
668 # * type tests against unresolved types (`x
isa Collection[E
]`)
669 # * type tests skipped
674 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
675 print "# static count_type_test"
676 print "\tresolved:\tunresolved\tskipped\ttotal"
677 var count_type_test_total = init_count_type_test_tags
678 count_type_test_resolved["total"] = 0
679 count_type_test_unresolved["total"] = 0
680 count_type_test_skipped["total"] = 0
681 count_type_test_total["total"] = 0
682 for tag in count_type_test_tags do
683 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
684 count_type_test_resolved["total"] += count_type_test_resolved[tag]
685 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
686 count_type_test_skipped["total"] += count_type_test_skipped[tag]
687 count_type_test_total["total"] += count_type_test_total[tag]
689 var count_type_test = count_type_test_total["total"]
690 var tags = count_type_test_tags.to_a
694 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
695 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
696 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
697 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
704 # Avoid division by zero by returning the string "n/a"
705 fun div(a,b:Int):String
707 if b == 0 then return "n/a"
708 return ((a*10000/b).to_f / 100.0).to_precision(2)
711 fun finalize_ffi_for_module(nmodule: AModule)
713 var visitor = new_visitor
714 nmodule.finalize_ffi(visitor, modelbuilder)
715 nmodule.finalize_nitni(visitor)
718 # Does this compiler support the FFI?
719 fun supports_ffi: Bool do return false
722 # A file unit (may be more than one file if
723 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
726 var writers = new Array[CodeWriter]
727 var required_declarations = new HashSet[String]
730 # Where to store generated lines
733 var lines: List[String] = new List[String]
734 var decl_lines: List[String] = new List[String]
736 # Add a line in the main part of the generated C
737 fun add(s: String) do self.lines.add(s)
740 # (used for local or global declaration)
741 fun add_decl(s: String) do self.decl_lines.add(s)
746 file.writers.add(self)
750 # A visitor on the AST of property definition that generate the C code.
751 abstract class AbstractCompilerVisitor
753 type COMPILER: AbstractCompiler
755 # The associated compiler
756 var compiler: COMPILER
758 # The current visited AST node
759 var current_node: nullable ANode writable = null
761 # The current `Frame`
762 var frame: nullable Frame writable
764 # Alias for self.compiler.mainmodule.object_type
765 fun object_type: MClassType do return self.compiler.mainmodule.object_type
767 # Alias for self.compiler.mainmodule.bool_type
768 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
770 var writer: CodeWriter
772 init(compiler: COMPILER)
774 self.compiler = compiler
775 self.writer = new CodeWriter(compiler.files.last)
778 # Force to get the primitive class named `name
` or abort
779 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
781 # Force to get the primitive property named `name
` in the instance `recv
` or abort
782 fun get_property(name: String, recv: MType): MMethod
784 assert recv isa MClassType
785 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
788 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
790 return self.send(callsite.mproperty, args)
793 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
795 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
797 # Transform varargs, in raw arguments, into a single argument of type `Array`
798 # Note: this method modify the given `args
`
799 # If there is no vararg, then `args
` is not modified.
800 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
802 var recv = args.first
803 var vararg_rank = msignature.vararg_rank
804 if vararg_rank >= 0 then
805 assert args.length >= msignature.arity + 1 # because of self
807 args = new Array[RuntimeVariable]
809 args.add(rawargs.first) # recv
811 for i in [0..vararg_rank[ do
812 args.add(rawargs[i+1])
815 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
816 var vararg = new Array[RuntimeVariable]
817 for i in [vararg_rank..vararg_lastrank] do
818 vararg.add(rawargs[i+1])
821 var elttype = msignature.mparameters[vararg_rank].mtype
822 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
824 for i in [vararg_lastrank+1..rawargs.length-1[ do
825 args.add(rawargs[i+1])
828 rawargs.add_all(args)
834 # Anchor a type to the main module and the current receiver
835 fun anchor(mtype: MType): MType
837 if not mtype.need_anchor then return mtype
838 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
841 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
843 if not mtype.need_anchor then return mtype
844 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
847 # Unsafely cast a value to a new type
848 # ie the result share the same C variable but my have a different mcasttype
849 # NOTE: if the adaptation is useless then `value
` is returned as it.
850 # ENSURE: `result
.name
== value
.name
`
851 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
853 mtype = self.anchor(mtype)
854 var valmtype = value.mcasttype
855 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
859 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
860 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
863 var res = new RuntimeVariable(value.name, valmtype, mtype)
868 # Generate a super call from a method definition
869 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
871 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
873 # Box or unbox a value to another type iff a C type conversion is needed
874 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
875 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
877 # Generate a polymorphic subtype test
878 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
880 # Generate the code required to dynamically check if 2 objects share the same runtime type
881 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
883 # Generate a Nit "is" for two runtime_variables
884 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
888 # Generate a static call on a method definition
889 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
891 # Generate a polymorphic send for the method `m
` and the arguments `args
`
892 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
894 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
895 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
897 assert t isa MClassType
898 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
899 return self.call(propdef, t, args)
902 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
903 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
905 assert t isa MClassType
906 m = m.lookup_next_definition(self.compiler.mainmodule, t)
907 return self.call(m, t, args)
910 # Attributes handling
912 # Generate a polymorphic attribute is_set test
913 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
915 # Generate a polymorphic attribute read
916 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
918 # Generate a polymorphic attribute write
919 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
923 # Add a check and an abort for a null reciever if needed
924 fun check_recv_notnull(recv: RuntimeVariable)
926 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
928 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
930 self.add("if ({recv} == NULL) \{")
931 self.add_abort("Receiver is null")
938 private var names: HashSet[String] = new HashSet[String]
939 private var last: Int = 0
941 # Return a new name based on `s
` and unique in the visitor
942 fun get_name(s: String): String
944 if not self.names.has(s) then
948 var i = self.last + 1
951 if not self.names.has(s2) then
960 # Return an unique and stable identifier associated with an escapemark
961 fun escapemark_name(e: nullable EscapeMark): String
964 if escapemark_names.has_key(e) then return escapemark_names[e]
966 if name == null then name = "label"
967 name = get_name(name)
968 escapemark_names[e] = name
972 private var escapemark_names = new HashMap[EscapeMark, String]
974 # Return a "const char*" variable associated to the classname of the dynamic type of an object
975 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
976 fun class_name_string(value: RuntimeVariable): String is abstract
980 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
982 # Return the local runtime_variable associated to a Nit local variable
983 fun variable(variable: Variable): RuntimeVariable
985 if self.variables.has_key(variable) then
986 return self.variables[variable]
988 var name = self.get_name("var_{variable.name}")
989 var mtype = variable.declared_type.as(not null)
990 mtype = self.anchor(mtype)
991 var res = new RuntimeVariable(name, mtype, mtype)
992 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
993 self.variables[variable] = res
998 # Return a new uninitialized local runtime_variable
999 fun new_var(mtype: MType): RuntimeVariable
1001 mtype = self.anchor(mtype)
1002 var name = self.get_name("var")
1003 var res = new RuntimeVariable(name, mtype, mtype)
1004 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1008 # Return a new uninitialized named runtime_variable
1009 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1011 mtype = self.anchor(mtype)
1012 var res = new RuntimeVariable(name, mtype, mtype)
1013 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1017 # Correctly assign a left and a right value
1018 # Boxing and unboxing is performed if required
1019 fun assign(left, right: RuntimeVariable)
1021 right = self.autobox(right, left.mtype)
1022 self.add("{left} = {right};")
1025 # Generate instances
1027 # Generate a alloc-instance + init-attributes
1028 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1030 # Generate an integer value
1031 fun int_instance(value: Int): RuntimeVariable
1033 var res = self.new_var(self.get_class("Int").mclass_type)
1034 self.add("{res} = {value};")
1038 # Generate a string value
1039 fun string_instance(string: String): RuntimeVariable
1041 var mtype = self.get_class("String").mclass_type
1042 var name = self.get_name("varonce")
1043 self.add_decl("static {mtype.ctype} {name};")
1044 var res = self.new_var(mtype)
1045 self.add("if ({name}) \{")
1046 self.add("{res} = {name};")
1047 self.add("\} else \{")
1048 var native_mtype = self.get_class("NativeString").mclass_type
1049 var nat = self.new_var(native_mtype)
1050 self.add("{nat} = \"{string.escape_to_c}\";")
1051 var length = self.int_instance(string.length)
1052 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1053 self.add("{name} = {res};")
1058 # Generate an array value
1059 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1061 # Get an instance of a array for a vararg
1062 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1066 # Add a line in the main part of the generated C
1067 fun add(s: String) do self.writer.lines.add(s)
1070 # (used for local or global declaration)
1071 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1073 # Request the presence of a global declaration
1074 fun require_declaration(key: String)
1076 self.writer.file.required_declarations.add(key)
1079 # Add a declaration in the local-header
1080 # The declaration is ensured to be present once
1081 fun declare_once(s: String)
1083 self.compiler.provide_declaration(s, s)
1084 self.require_declaration(s)
1087 # look for a needed .h and .c file for a given .nit source-file
1088 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1089 fun add_extern(file: String)
1091 file = file.strip_extension(".nit")
1092 var tryfile = file + ".nit.h"
1093 if tryfile.file_exists then
1094 self.declare_once("#include \"{tryfile.basename("")}\"")
1095 self.compiler.files_to_copy.add(tryfile)
1097 tryfile = file + "_nit.h"
1098 if tryfile.file_exists then
1099 self.declare_once("#include \"{tryfile.basename("")}\"")
1100 self.compiler.files_to_copy.add(tryfile)
1103 if self.compiler.seen_extern.has(file) then return
1104 self.compiler.seen_extern.add(file)
1105 tryfile = file + ".nit.c"
1106 if not tryfile.file_exists then
1107 tryfile = file + "_nit.c"
1108 if not tryfile.file_exists then return
1110 var f = new ExternCFile(tryfile.basename(""), "")
1111 self.compiler.extern_bodies.add(f)
1112 self.compiler.files_to_copy.add(tryfile)
1115 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1116 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1118 var res = new_var(mtype)
1119 self.add("{res} = {cexpr};")
1123 # Generate generic abort
1124 # used by aborts, asserts, casts, etc.
1125 fun add_abort(message: String)
1127 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1133 if self.current_node != null and self.current_node.location.file != null then
1134 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1136 self.add("fprintf(stderr, \"\\n\");")
1138 self.add("show_backtrace(1);")
1141 # Add a dynamic cast
1142 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1144 var res = self.type_test(value, mtype, tag)
1145 self.add("if (!{res}) \{")
1146 var cn = self.class_name_string(value)
1147 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1152 # Generate a return with the value `s
`
1153 fun ret(s: RuntimeVariable)
1155 self.assign(self.frame.returnvar.as(not null), s)
1156 self.add("goto {self.frame.returnlabel.as(not null)};")
1159 # Compile a statement (if any)
1160 fun stmt(nexpr: nullable AExpr)
1162 if nexpr == null then return
1163 var old = self.current_node
1164 self.current_node = nexpr
1166 self.current_node = old
1169 # Compile an expression an return its result
1170 # `mtype
` is the expected return type, pass null if no specific type is expected.
1171 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1173 var old = self.current_node
1174 self.current_node = nexpr
1175 var res = nexpr.expr(self).as(not null)
1176 if mtype != null then
1177 mtype = self.anchor(mtype)
1178 res = self.autobox(res, mtype)
1180 res = autoadapt(res, nexpr.mtype.as(not null))
1181 var implicit_cast_to = nexpr.implicit_cast_to
1182 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1183 add_cast(res, implicit_cast_to, "auto")
1184 res = autoadapt(res, implicit_cast_to)
1186 self.current_node = old
1190 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1191 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1193 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1194 fun debug(message: String)
1196 var node = self.current_node
1197 if node == null then
1198 print "?: {message}"
1202 self.add("/* DEBUG: {message} */")
1206 # A C function associated to a Nit method
1207 # Because of customization, a given Nit method can be compiler more that once
1208 abstract class AbstractRuntimeFunction
1210 type COMPILER: AbstractCompiler
1211 type VISITOR: AbstractCompilerVisitor
1213 # The associated Nit method
1214 var mmethoddef: MMethodDef
1216 # The mangled c name of the runtime_function
1217 # Subclasses should redefine `build_c_name
` instead
1220 var res = self.c_name_cache
1221 if res != null then return res
1222 res = self.build_c_name
1223 self.c_name_cache = res
1227 # Non cached version of `c_name
`
1228 protected fun build_c_name: String is abstract
1230 protected var c_name_cache: nullable String writable = null
1232 # Implements a call of the runtime_function
1233 # May inline the body or generate a C function call
1234 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1236 # Generate the code for the `AbstractRuntimeFunction`
1237 # Warning: compile more than once compilation makes CC unhappy
1238 fun compile_to_c(compiler: COMPILER) is abstract
1241 # A runtime variable hold a runtime value in C.
1242 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1244 # 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.
1245 class RuntimeVariable
1246 # The name of the variable in the C code
1249 # The static type of the variable (as declard in C)
1252 # The current casted type of the variable (as known in Nit)
1253 var mcasttype: MType writable
1255 # If the variable exaclty a mcasttype?
1256 # false (usual value) means that the variable is a mcasttype or a subtype.
1257 var is_exact: Bool writable = false
1259 init(name: String, mtype: MType, mcasttype: MType)
1263 self.mcasttype = mcasttype
1264 assert not mtype.need_anchor
1265 assert not mcasttype.need_anchor
1268 redef fun to_s do return name
1273 if self.is_exact then
1274 exact_str = " exact"
1279 if self.mtype == self.mcasttype then
1280 type_str = "{mtype}{exact_str}"
1282 type_str = "{mtype}({mcasttype}{exact_str})"
1284 return "<{name}:{type_str}>"
1288 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1291 type VISITOR: AbstractCompilerVisitor
1293 # The associated visitor
1294 var visitor: VISITOR
1296 # The executed property.
1297 # A Method in case of a call, an attribute in case of a default initialization.
1298 var mpropdef: MPropDef
1300 # The static type of the receiver
1301 var receiver: MClassType
1303 # Arguments of the method (the first is the receiver)
1304 var arguments: Array[RuntimeVariable]
1306 # The runtime_variable associated to the return (in a function)
1307 var returnvar: nullable RuntimeVariable writable = null
1309 # The label at the end of the property
1310 var returnlabel: nullable String writable = null
1314 # Return the C type associated to a given Nit static type
1315 fun ctype: String do return "val*"
1317 fun ctypename: String do return "val"
1319 # Return the name of the C structure associated to a Nit live type
1320 fun c_name: String is abstract
1321 protected var c_name_cache: nullable String protected writable
1324 redef class MClassType
1327 var res = self.c_name_cache
1328 if res != null then return res
1329 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1330 self.c_name_cache = res
1334 redef fun ctype: String
1336 if mclass.name == "Int" then
1338 else if mclass.name == "Bool" then
1340 else if mclass.name == "Char" then
1342 else if mclass.name == "Float" then
1344 else if mclass.name == "NativeString" then
1346 else if mclass.name == "NativeArray" then
1348 else if mclass.kind == extern_kind then
1355 redef fun ctypename: String
1357 if mclass.name == "Int" then
1359 else if mclass.name == "Bool" then
1361 else if mclass.name == "Char" then
1363 else if mclass.name == "Float" then
1365 else if mclass.name == "NativeString" then
1367 else if mclass.name == "NativeArray" then
1368 #return "{self.arguments.first.ctype}*"
1370 else if mclass.kind == extern_kind then
1378 redef class MGenericType
1381 var res = self.c_name_cache
1382 if res != null then return res
1384 for t in self.arguments do
1385 res = res + t.c_name
1387 self.c_name_cache = res
1392 redef class MParameterType
1395 var res = self.c_name_cache
1396 if res != null then return res
1397 res = "{self.mclass.c_name}_FT{self.rank}"
1398 self.c_name_cache = res
1403 redef class MVirtualType
1406 var res = self.c_name_cache
1407 if res != null then return res
1408 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1409 self.c_name_cache = res
1414 redef class MNullableType
1417 var res = self.c_name_cache
1418 if res != null then return res
1419 res = "nullable_{self.mtype.c_name}"
1420 self.c_name_cache = res
1426 # Return the name of the C structure associated to a Nit class
1427 fun c_name: String do
1428 var res = self.c_name_cache
1429 if res != null then return res
1430 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1431 self.c_name_cache = res
1434 private var c_name_cache: nullable String
1437 redef class MProperty
1438 fun c_name: String do
1439 var res = self.c_name_cache
1440 if res != null then return res
1441 res = "{self.intro.c_name}"
1442 self.c_name_cache = res
1445 private var c_name_cache: nullable String
1448 redef class MPropDef
1449 type VISITOR: AbstractCompilerVisitor
1451 private var c_name_cache: nullable String
1453 # The mangled name associated to the property
1456 var res = self.c_name_cache
1457 if res != null then return res
1458 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1459 self.c_name_cache = res
1464 redef class MMethodDef
1465 # Can the body be inlined?
1466 fun can_inline(v: VISITOR): Bool
1468 var modelbuilder = v.compiler.modelbuilder
1469 if modelbuilder.mpropdef2npropdef.has_key(self) then
1470 var npropdef = modelbuilder.mpropdef2npropdef[self]
1471 return npropdef.can_inline
1472 else if self.mproperty.name == "init" then
1473 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1480 # Inline the body in another visitor
1481 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1483 var modelbuilder = v.compiler.modelbuilder
1484 if modelbuilder.mpropdef2npropdef.has_key(self) then
1485 var npropdef = modelbuilder.mpropdef2npropdef[self]
1486 var oldnode = v.current_node
1487 v.current_node = npropdef
1488 self.compile_parameter_check(v, arguments)
1489 npropdef.compile_to_c(v, self, arguments)
1490 v.current_node = oldnode
1491 else if self.mproperty.name == "init" then
1492 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1493 var oldnode = v.current_node
1494 v.current_node = nclassdef
1495 self.compile_parameter_check(v, arguments)
1496 nclassdef.compile_to_c(v, self, arguments)
1497 v.current_node = oldnode
1504 # Generate type checks in the C code to check covariant parameters
1505 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1507 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1509 for i in [0..msignature.arity[ do
1510 # skip test for vararg since the array is instantiated with the correct polymorphic type
1511 if msignature.vararg_rank == i then continue
1513 # skip if the cast is not required
1514 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1515 if not origmtype.need_anchor then continue
1517 # get the parameter type
1518 var mtype = self.msignature.mparameters[i].mtype
1521 # note that v decides if and how to implements the cast
1522 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1523 v.add_cast(arguments[i+1], mtype, "covariance")
1530 redef class APropdef
1531 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1533 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1534 debug("Not yet implemented")
1537 fun can_inline: Bool do return true
1540 redef class AConcreteMethPropdef
1541 redef fun compile_to_c(v, mpropdef, arguments)
1543 for i in [0..mpropdef.msignature.arity[ do
1544 var variable = self.n_signature.n_params[i].variable.as(not null)
1545 v.assign(v.variable(variable), arguments[i+1])
1547 # Call the implicit super-init
1548 var auto_super_inits = self.auto_super_inits
1549 if auto_super_inits != null then
1550 var args = [arguments.first]
1551 for auto_super_init in auto_super_inits do
1553 for i in [0..auto_super_init.intro.msignature.arity+1[ do
1554 args.add(arguments[i])
1556 v.send(auto_super_init, args)
1559 v.stmt(self.n_block)
1562 redef fun can_inline
1564 if self.auto_super_inits != null then return false
1565 var nblock = self.n_block
1566 if nblock == null then return true
1567 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1568 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1573 redef class AInternMethPropdef
1574 redef fun compile_to_c(v, mpropdef, arguments)
1576 var pname = mpropdef.mproperty.name
1577 var cname = mpropdef.mclassdef.mclass.name
1578 var ret = mpropdef.msignature.return_mtype
1580 ret = v.resolve_for(ret, arguments.first)
1582 if pname != "==" and pname != "!=" then
1583 v.adapt_signature(mpropdef, arguments)
1585 if cname == "Int" then
1586 if pname == "output" then
1587 v.add("printf(\"%ld\\n\", {arguments.first});")
1589 else if pname == "object_id" then
1590 v.ret(arguments.first)
1592 else if pname == "+" then
1593 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1595 else if pname == "-" then
1596 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1598 else if pname == "unary -" then
1599 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1601 else if pname == "succ" then
1602 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1604 else if pname == "prec" then
1605 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1607 else if pname == "*" then
1608 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1610 else if pname == "/" then
1611 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1613 else if pname == "%" then
1614 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1616 else if pname == "lshift" then
1617 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1619 else if pname == "rshift" then
1620 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1622 else if pname == "==" then
1623 v.ret(v.equal_test(arguments[0], arguments[1]))
1625 else if pname == "!=" then
1626 var res = v.equal_test(arguments[0], arguments[1])
1627 v.ret(v.new_expr("!{res}", ret.as(not null)))
1629 else if pname == "<" then
1630 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1632 else if pname == ">" then
1633 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1635 else if pname == "<=" then
1636 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1638 else if pname == ">=" then
1639 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1641 else if pname == "to_f" then
1642 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1644 else if pname == "ascii" then
1645 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1648 else if cname == "Char" then
1649 if pname == "output" then
1650 v.add("printf(\"%c\", {arguments.first});")
1652 else if pname == "object_id" then
1653 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1655 else if pname == "+" then
1656 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1658 else if pname == "-" then
1659 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1661 else if pname == "==" then
1662 v.ret(v.equal_test(arguments[0], arguments[1]))
1664 else if pname == "!=" then
1665 var res = v.equal_test(arguments[0], arguments[1])
1666 v.ret(v.new_expr("!{res}", ret.as(not null)))
1668 else if pname == "succ" then
1669 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1671 else if pname == "prec" then
1672 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1674 else if pname == "<" then
1675 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1677 else if pname == ">" then
1678 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1680 else if pname == "<=" then
1681 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1683 else if pname == ">=" then
1684 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1686 else if pname == "to_i" then
1687 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1689 else if pname == "ascii" then
1690 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1693 else if cname == "Bool" then
1694 if pname == "output" then
1695 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1697 else if pname == "object_id" then
1698 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1700 else if pname == "==" then
1701 v.ret(v.equal_test(arguments[0], arguments[1]))
1703 else if pname == "!=" then
1704 var res = v.equal_test(arguments[0], arguments[1])
1705 v.ret(v.new_expr("!{res}", ret.as(not null)))
1708 else if cname == "Float" then
1709 if pname == "output" then
1710 v.add("printf(\"%f\\n\", {arguments.first});")
1712 else if pname == "object_id" then
1713 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1715 else if pname == "+" then
1716 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1718 else if pname == "-" then
1719 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1721 else if pname == "unary -" then
1722 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1724 else if pname == "succ" then
1725 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1727 else if pname == "prec" then
1728 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1730 else if pname == "*" then
1731 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1733 else if pname == "/" then
1734 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1736 else if pname == "==" then
1737 v.ret(v.equal_test(arguments[0], arguments[1]))
1739 else if pname == "!=" then
1740 var res = v.equal_test(arguments[0], arguments[1])
1741 v.ret(v.new_expr("!{res}", ret.as(not null)))
1743 else if pname == "<" then
1744 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1746 else if pname == ">" then
1747 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1749 else if pname == "<=" then
1750 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1752 else if pname == ">=" then
1753 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1755 else if pname == "to_i" then
1756 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1759 else if cname == "NativeString" then
1760 if pname == "[]" then
1761 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1763 else if pname == "[]=" then
1764 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1766 else if pname == "copy_to" then
1767 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1769 else if pname == "atoi" then
1770 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1773 else if cname == "NativeArray" then
1774 v.native_array_def(pname, ret, arguments)
1777 if pname == "exit" then
1778 v.add("exit({arguments[1]});")
1780 else if pname == "sys" then
1781 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1783 else if pname == "calloc_string" then
1784 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1786 else if pname == "calloc_array" then
1787 v.calloc_array(ret.as(not null), arguments)
1789 else if pname == "object_id" then
1790 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1792 else if pname == "is_same_type" then
1793 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1795 else if pname == "is_same_instance" then
1796 v.ret(v.equal_test(arguments[0], arguments[1]))
1798 else if pname == "output_class_name" then
1799 var nat = v.class_name_string(arguments.first)
1800 v.add("printf(\"%s\\n\", {nat});")
1802 else if pname == "native_class_name" then
1803 var nat = v.class_name_string(arguments.first)
1804 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1806 else if pname == "force_garbage_collection" then
1807 v.add("nit_gcollect();")
1809 else if pname == "native_argc" then
1810 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1812 else if pname == "native_argv" then
1813 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1816 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1817 debug("Not implemented {mpropdef}")
1821 redef class AExternMethPropdef
1822 redef fun compile_to_c(v, mpropdef, arguments)
1825 var nextern = self.n_extern
1826 if nextern == null then
1827 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1828 v.add("show_backtrace(1);")
1831 externname = nextern.text.substring(1, nextern.text.length-2)
1832 if location.file != null then
1833 var file = location.file.filename
1836 var res: nullable RuntimeVariable = null
1837 var ret = mpropdef.msignature.return_mtype
1839 ret = v.resolve_for(ret, arguments.first)
1840 res = v.new_var(ret)
1842 v.adapt_signature(mpropdef, arguments)
1845 v.add("{externname}({arguments.join(", ")});")
1847 v.add("{res} = {externname}({arguments.join(", ")});")
1853 redef class AExternInitPropdef
1854 redef fun compile_to_c(v, mpropdef, arguments)
1857 var nextern = self.n_extern
1858 if nextern == null then
1859 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1860 v.add("show_backtrace(1);")
1863 externname = nextern.text.substring(1, nextern.text.length-2)
1864 if location.file != null then
1865 var file = location.file.filename
1868 v.adapt_signature(mpropdef, arguments)
1869 var ret = arguments.first.mtype
1870 var res = v.new_var(ret)
1874 v.add("{res} = {externname}({arguments.join(", ")});")
1879 redef class AAttrPropdef
1880 redef fun compile_to_c(v, mpropdef, arguments)
1882 if arguments.length == 1 then
1883 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1884 v.assign(v.frame.returnvar.as(not null), res)
1886 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1890 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1892 var nexpr = self.n_expr
1893 if nexpr != null then
1894 var oldnode = v.current_node
1895 v.current_node = self
1896 var old_frame = v.frame
1897 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1899 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1900 v.write_attribute(self.mpropdef.mproperty, recv, value)
1902 v.current_node = oldnode
1906 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1908 var nexpr = self.n_expr
1909 if nexpr != null then return
1911 var oldnode = v.current_node
1912 v.current_node = self
1913 var old_frame = v.frame
1914 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1916 # Force read to check the initialization
1917 v.read_attribute(self.mpropdef.mproperty, recv)
1919 v.current_node = oldnode
1923 redef class AClassdef
1924 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1926 if mpropdef == self.mfree_init then
1927 var super_inits = self.super_inits
1928 if super_inits != null then
1929 assert arguments.length == 1
1930 for su in super_inits do
1931 v.send(su, arguments)
1935 var recv = arguments.first
1937 # Collect undefined attributes
1938 for npropdef in self.n_propdefs do
1939 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1940 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1950 redef class ADeferredMethPropdef
1951 redef fun compile_to_c(v, mpropdef, arguments) do
1952 var cn = v.class_name_string(arguments.first)
1953 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1956 redef fun can_inline do return true
1960 # Try to compile self as an expression
1961 # Do not call this method directly, use `v
.expr
` instead
1962 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1964 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1965 var mtype = self.mtype
1966 if mtype == null then
1969 var res = v.new_var(mtype)
1970 v.add("/* {res} = NOT YET {class_name} */")
1975 # Try to compile self as a statement
1976 # Do not call this method directly, use `v
.stmt
` instead
1977 private fun stmt(v: AbstractCompilerVisitor)
1980 if res != null then v.add("{res};")
1984 redef class ABlockExpr
1987 for e in self.n_expr do v.stmt(e)
1991 var last = self.n_expr.last
1992 for e in self.n_expr do
1993 if e == last then break
1996 return v.expr(last, null)
2000 redef class AVardeclExpr
2003 var variable = self.variable.as(not null)
2004 var ne = self.n_expr
2006 var i = v.expr(ne, variable.declared_type)
2007 v.assign(v.variable(variable), i)
2012 redef class AVarExpr
2015 var res = v.variable(self.variable.as(not null))
2016 var mtype = self.mtype.as(not null)
2017 return v.autoadapt(res, mtype)
2021 redef class AVarAssignExpr
2024 var variable = self.variable.as(not null)
2025 var i = v.expr(self.n_value, variable.declared_type)
2026 v.assign(v.variable(variable), i)
2030 var variable = self.variable.as(not null)
2031 var i = v.expr(self.n_value, variable.declared_type)
2032 v.assign(v.variable(variable), i)
2037 redef class AVarReassignExpr
2040 var variable = self.variable.as(not null)
2041 var vari = v.variable(variable)
2042 var value = v.expr(self.n_value, variable.declared_type)
2043 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2045 v.assign(v.variable(variable), res)
2049 redef class ASelfExpr
2050 redef fun expr(v) do return v.frame.arguments.first
2053 redef class AContinueExpr
2054 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2057 redef class ABreakExpr
2058 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2061 redef class AReturnExpr
2064 var nexpr = self.n_expr
2065 if nexpr != null then
2066 var returnvar = v.frame.returnvar.as(not null)
2067 var i = v.expr(nexpr, returnvar.mtype)
2068 v.assign(returnvar, i)
2070 v.add("goto {v.frame.returnlabel.as(not null)};")
2074 redef class AAbortExpr
2075 redef fun stmt(v) do v.add_abort("Aborted")
2081 var cond = v.expr_bool(self.n_expr)
2082 v.add("if ({cond})\{")
2091 var res = v.new_var(self.mtype.as(not null))
2092 var cond = v.expr_bool(self.n_expr)
2093 v.add("if ({cond})\{")
2094 v.assign(res, v.expr(self.n_then.as(not null), null))
2096 v.assign(res, v.expr(self.n_else.as(not null), null))
2102 redef class AIfexprExpr
2105 var res = v.new_var(self.mtype.as(not null))
2106 var cond = v.expr_bool(self.n_expr)
2107 v.add("if ({cond})\{")
2108 v.assign(res, v.expr(self.n_then, null))
2110 v.assign(res, v.expr(self.n_else, null))
2119 v.stmt(self.n_block)
2120 var escapemark = self.escapemark
2121 if escapemark != null then
2122 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2127 redef class AWhileExpr
2131 var cond = v.expr_bool(self.n_expr)
2132 v.add("if (!{cond}) break;")
2133 v.stmt(self.n_block)
2134 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2136 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2140 redef class ALoopExpr
2144 v.stmt(self.n_block)
2145 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2147 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2151 redef class AForExpr
2154 # Shortcut on explicit range
2155 # Avoid the instantiation of the range and the iterator
2156 var nexpr = self.n_expr
2157 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2158 var from = v.expr(nexpr.n_expr, null)
2159 var to = v.expr(nexpr.n_expr2, null)
2160 var variable = v.variable(variables.first)
2162 v.assign(variable, from)
2163 v.add("for(;;) \{ /* shortcut range */")
2165 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2167 v.add("if(!{ok}) break;")
2169 v.stmt(self.n_block)
2171 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2172 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2174 v.assign(variable, succ)
2176 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2180 var cl = v.expr(self.n_expr, null)
2181 var it_meth = self.method_iterator
2182 assert it_meth != null
2183 var it = v.send(it_meth, [cl])
2186 var isok_meth = self.method_is_ok
2187 assert isok_meth != null
2188 var ok = v.send(isok_meth, [it])
2190 v.add("if(!{ok}) break;")
2191 if self.variables.length == 1 then
2192 var item_meth = self.method_item
2193 assert item_meth != null
2194 var i = v.send(item_meth, [it])
2196 v.assign(v.variable(variables.first), i)
2197 else if self.variables.length == 2 then
2198 var key_meth = self.method_key
2199 assert key_meth != null
2200 var i = v.send(key_meth, [it])
2202 v.assign(v.variable(variables[0]), i)
2203 var item_meth = self.method_item
2204 assert item_meth != null
2205 i = v.send(item_meth, [it])
2207 v.assign(v.variable(variables[1]), i)
2211 v.stmt(self.n_block)
2212 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2213 var next_meth = self.method_next
2214 assert next_meth != null
2215 v.send(next_meth, [it])
2217 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2221 redef class AAssertExpr
2224 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2226 var cond = v.expr_bool(self.n_expr)
2227 v.add("if (!{cond}) \{")
2231 v.add_abort("Assert '{nid.text}' failed")
2233 v.add_abort("Assert failed")
2242 var res = v.new_var(self.mtype.as(not null))
2243 var i1 = v.expr_bool(self.n_expr)
2244 v.add("if ({i1}) \{")
2247 var i2 = v.expr_bool(self.n_expr2)
2248 v.add("{res} = {i2};")
2254 redef class AImpliesExpr
2257 var res = v.new_var(self.mtype.as(not null))
2258 var i1 = v.expr_bool(self.n_expr)
2259 v.add("if (!{i1}) \{")
2262 var i2 = v.expr_bool(self.n_expr2)
2263 v.add("{res} = {i2};")
2269 redef class AAndExpr
2272 var res = v.new_var(self.mtype.as(not null))
2273 var i1 = v.expr_bool(self.n_expr)
2274 v.add("if (!{i1}) \{")
2277 var i2 = v.expr_bool(self.n_expr2)
2278 v.add("{res} = {i2};")
2284 redef class ANotExpr
2287 var cond = v.expr_bool(self.n_expr)
2288 return v.new_expr("!{cond}", self.mtype.as(not null))
2292 redef class AOrElseExpr
2295 var res = v.new_var(self.mtype.as(not null))
2296 var i1 = v.expr(self.n_expr, null)
2297 v.add("if ({i1}!=NULL) \{")
2300 var i2 = v.expr(self.n_expr2, null)
2307 redef class AIntExpr
2308 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2311 redef class AFloatExpr
2312 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2315 redef class ACharExpr
2316 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2319 redef class AArrayExpr
2322 var mtype = self.mtype.as(MClassType).arguments.first
2323 var array = new Array[RuntimeVariable]
2324 for nexpr in self.n_exprs.n_exprs do
2325 var i = v.expr(nexpr, mtype)
2328 return v.array_instance(array, mtype)
2332 redef class AStringFormExpr
2333 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2336 redef class ASuperstringExpr
2339 var array = new Array[RuntimeVariable]
2340 for ne in self.n_exprs do
2341 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2342 var i = v.expr(ne, null)
2345 var a = v.array_instance(array, v.object_type)
2346 var res = v.send(v.get_property("to_s", a.mtype), [a])
2351 redef class ACrangeExpr
2354 var i1 = v.expr(self.n_expr, null)
2355 var i2 = v.expr(self.n_expr2, null)
2356 var mtype = self.mtype.as(MClassType)
2357 var res = v.init_instance(mtype)
2358 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2363 redef class AOrangeExpr
2366 var i1 = v.expr(self.n_expr, null)
2367 var i2 = v.expr(self.n_expr2, null)
2368 var mtype = self.mtype.as(MClassType)
2369 var res = v.init_instance(mtype)
2370 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2375 redef class ATrueExpr
2376 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2379 redef class AFalseExpr
2380 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2383 redef class ANullExpr
2384 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2387 redef class AIsaExpr
2390 var i = v.expr(self.n_expr, null)
2391 return v.type_test(i, self.cast_type.as(not null), "isa")
2395 redef class AAsCastExpr
2398 var i = v.expr(self.n_expr, null)
2399 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2401 v.add_cast(i, self.mtype.as(not null), "as")
2406 redef class AAsNotnullExpr
2409 var i = v.expr(self.n_expr, null)
2410 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2412 v.add("if ({i} == NULL) \{")
2413 v.add_abort("Cast failed")
2419 redef class AParExpr
2420 redef fun expr(v) do return v.expr(self.n_expr, null)
2423 redef class AOnceExpr
2426 var mtype = self.mtype.as(not null)
2427 var name = v.get_name("varonce")
2428 var guard = v.get_name(name + "_guard")
2429 v.add_decl("static {mtype.ctype} {name};")
2430 v.add_decl("static int {guard};")
2431 var res = v.new_var(mtype)
2432 v.add("if ({guard}) \{")
2433 v.add("{res} = {name};")
2435 var i = v.expr(self.n_expr, mtype)
2436 v.add("{res} = {i};")
2437 v.add("{name} = {res};")
2438 v.add("{guard} = 1;")
2444 redef class ASendExpr
2447 var recv = v.expr(self.n_expr, null)
2449 for a in self.raw_arguments.as(not null) do
2450 args.add(v.expr(a, null))
2452 return v.compile_callsite(self.callsite.as(not null), args)
2456 redef class ASendReassignFormExpr
2459 var recv = v.expr(self.n_expr, null)
2461 for a in self.raw_arguments.as(not null) do
2462 args.add(v.expr(a, null))
2464 var value = v.expr(self.n_value, null)
2466 var left = v.compile_callsite(self.callsite.as(not null), args)
2469 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2473 v.compile_callsite(self.write_callsite.as(not null), args)
2477 redef class ASuperExpr
2480 var recv = v.frame.arguments.first
2482 for a in self.n_args.n_exprs do
2483 args.add(v.expr(a, null))
2486 var callsite = self.callsite
2487 if callsite != null then
2488 # Add additionnals arguments for the super init call
2489 if args.length == 1 then
2490 for i in [0..callsite.mproperty.intro.msignature.arity[ do
2491 args.add(v.frame.arguments[i+1])
2495 var res = v.compile_callsite(callsite, args)
2499 if args.length == 1 then
2500 args = v.frame.arguments
2503 # stantard call-next-method
2504 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2508 redef class ANewExpr
2511 var mtype = self.mtype.as(MClassType)
2513 var ctype = mtype.ctype
2514 if ctype == "val*" then
2515 recv = v.init_instance(mtype)
2516 else if ctype == "void*" then
2517 recv = v.new_expr("NULL/*special!*/", mtype)
2519 debug("cannot new {mtype}")
2523 for a in self.n_args.n_exprs do
2524 args.add(v.expr(a, null))
2526 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2527 if res2 != null then
2528 #self.debug("got {res2} from {mproperty}. drop {recv}")
2535 redef class AAttrExpr
2538 var recv = v.expr(self.n_expr, null)
2539 var mproperty = self.mproperty.as(not null)
2540 return v.read_attribute(mproperty, recv)
2544 redef class AAttrAssignExpr
2547 var recv = v.expr(self.n_expr, null)
2548 var i = v.expr(self.n_value, null)
2549 var mproperty = self.mproperty.as(not null)
2550 v.write_attribute(mproperty, recv, i)
2554 redef class AAttrReassignExpr
2557 var recv = v.expr(self.n_expr, null)
2558 var value = v.expr(self.n_value, null)
2559 var mproperty = self.mproperty.as(not null)
2560 var attr = v.read_attribute(mproperty, recv)
2561 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2563 v.write_attribute(mproperty, recv, res)
2567 redef class AIssetAttrExpr
2570 var recv = v.expr(self.n_expr, null)
2571 var mproperty = self.mproperty.as(not null)
2572 return v.isset_attribute(mproperty, recv)
2576 redef class ADebugTypeExpr
2585 redef class Array[E]
2586 # Return a new `Array` with the elements only contened in self and not in `o
`
2587 fun -(o: Array[E]): Array[E] do
2588 var res = new Array[E]
2589 for e in self do if not o.has(e) then res.add(e)
2595 # All `MProperty` associated to all `MClassDef` of `mclass
`
2596 fun properties(mclass: MClass): Set[MProperty] do
2597 if not self.properties_cache.has_key(mclass) then
2598 var properties = new HashSet[MProperty]
2599 var parents = new Array[MClass]
2600 if self.flatten_mclass_hierarchy.has(mclass) then
2601 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2603 for parent in parents do
2604 properties.add_all(self.properties(parent))
2606 for mclassdef in mclass.mclassdefs do
2607 for mprop in mclassdef.intro_mproperties do
2608 properties.add(mprop)
2611 self.properties_cache[mclass] = properties
2613 return properties_cache[mclass]
2615 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2619 # Does this module use the legacy native interface?
2620 fun uses_legacy_ni: Bool is abstract
2622 # Write FFI results to file
2623 fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
2625 # Write nitni results to file
2626 fun finalize_nitni(v: AbstractCompilerVisitor) is abstract