1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Copyright 2012 Jean Privat <jean@pryen.org>
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 module abstract_compiler
22 import auto_super_init
27 # Add compiling options
28 redef class ToolContext
30 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
32 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
34 var opt_cc_path
: OptionArray = new OptionArray("Set include path for C header files (may be used more than once)", "--cc-path")
36 var opt_make_flags
: OptionString = new OptionString("Additional options to make", "--make-flags")
38 var opt_compile_dir
: OptionString = new OptionString("Directory used to generate temporary files", "--compile-dir")
40 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
42 var opt_no_shortcut_range
: OptionBool = new OptionBool("Always insantiate a range and its iterator on 'for' loops", "--no-shortcut-range")
43 # --no-check-covariance
44 var opt_no_check_covariance
: OptionBool = new OptionBool("Disable type tests of covariant parameters (dangerous)", "--no-check-covariance")
45 # --no-check-initialization
46 var opt_no_check_initialization
: OptionBool = new OptionBool("Disable isset tests at the end of constructors (dangerous)", "--no-check-initialization")
48 var opt_no_check_assert
: OptionBool = new OptionBool("Disable the evaluation of explicit 'assert' and 'as' (dangerous)", "--no-check-assert")
50 var opt_no_check_autocast
: OptionBool = new OptionBool("Disable implicit casts on unsafe expression usage (dangerous)", "--no-check-autocast")
52 var opt_no_check_other
: OptionBool = new OptionBool("Disable implicit tests: unset attribute, null receiver (dangerous)", "--no-check-other")
53 # --typing-test-metrics
54 var opt_typing_test_metrics
: OptionBool = new OptionBool("Enable static and dynamic count of all type tests", "--typing-test-metrics")
56 var opt_no_stacktrace
: OptionBool = new OptionBool("Disables libunwind and generation of C stack traces (can be problematic when compiling to targets such as Android or NaCl)", "--no-stacktrace")
57 # --stack-trace-C-to-Nit-name-binding
58 var opt_stacktrace
: OptionBool = new OptionBool("Enables the use of gperf to bind C to Nit function names when encountering a Stack trace at runtime", "--nit-stacktrace")
63 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_make_flags
, self.opt_compile_dir
, self.opt_hardening
, self.opt_no_shortcut_range
)
64 self.option_context
.add_option
(self.opt_no_check_covariance
, self.opt_no_check_initialization
, self.opt_no_check_assert
, self.opt_no_check_autocast
, self.opt_no_check_other
)
65 self.option_context
.add_option
(self.opt_typing_test_metrics
)
66 self.option_context
.add_option
(self.opt_stacktrace
)
67 self.option_context
.add_option
(self.opt_no_stacktrace
)
71 redef class ModelBuilder
72 redef init(model
, toolcontext
)
74 if toolcontext
.opt_no_stacktrace
.value
and toolcontext
.opt_stacktrace
.value
then
75 print
"Cannot use --nit-stacktrace when --no-stacktrace is activated"
82 # The compilation directory
83 var compile_dir
: String
85 # Simple indirection to `Toolchain::write_and_make`
86 protected fun write_and_make
(compiler
: AbstractCompiler)
88 var platform
= compiler
.mainmodule
.target_platform
90 if platform
== null then
91 toolchain
= new MakefileToolchain(toolcontext
)
93 toolchain
= platform
.toolchain
(toolcontext
)
95 compile_dir
= toolchain
.compile_dir
96 toolchain
.write_and_make compiler
101 fun toolchain
(toolcontext
: ToolContext): Toolchain is abstract
105 var toolcontext
: ToolContext
107 fun compile_dir
: String
109 var compile_dir
= toolcontext
.opt_compile_dir
.value
110 if compile_dir
== null then compile_dir
= ".nit_compile"
114 fun write_and_make
(compiler
: AbstractCompiler) is abstract
117 class MakefileToolchain
119 # The list of directories to search for included C headers (-I for C compilers)
120 # The list is initially set with :
121 # * the toolcontext --cc-path option
122 # * the NIT_CC_PATH environment variable
123 # * some heuristics including the NIT_DIR environment variable and the progname of the process
124 # Path can be added (or removed) by the client
125 var cc_paths
= new Array[String]
127 protected fun gather_cc_paths
129 # Look for the the Nit clib path
130 var path_env
= "NIT_DIR".environ
131 if not path_env
.is_empty
then
132 var libname
= "{path_env}/clib"
133 if libname
.file_exists
then cc_paths
.add
(libname
)
136 var libname
= "{sys.program_name.dirname}/../clib"
137 if libname
.file_exists
then cc_paths
.add
(libname
.simplify_path
)
139 if cc_paths
.is_empty
then
140 toolcontext
.error
(null, "Cannot determine the nit clib path. define envvar NIT_DIR.")
143 # Add user defined cc_paths
144 cc_paths
.append
(toolcontext
.opt_cc_path
.value
)
146 path_env
= "NIT_CC_PATH".environ
147 if not path_env
.is_empty
then
148 cc_paths
.append
(path_env
.split_with
(':'))
152 redef fun write_and_make
(compiler
)
156 var mainmodule
= compiler
.mainmodule
157 var compile_dir
= compile_dir
159 # Generate the .h and .c files
160 # A single C file regroups many compiled rumtime functions
161 # Note that we do not try to be clever an a small change in a Nit source file may change the content of all the generated .c files
163 self.toolcontext
.info
("*** WRITING C ***", 1)
167 var cfiles
= new Array[String]
168 write_files
(compiler
, compile_dir
, cfiles
)
170 # Generate the Makefile
172 write_makefile
(compiler
, compile_dir
, cfiles
)
175 self.toolcontext
.info
("*** END WRITING C: {time1-time0} ***", 2)
177 # Execute the Makefile
179 if self.toolcontext
.opt_no_cc
.value
then return
182 self.toolcontext
.info
("*** COMPILING C ***", 1)
184 compile_c_code
(compiler
, compile_dir
)
187 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
190 fun write_files
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
192 if self.toolcontext
.opt_stacktrace
.value
then compiler
.build_c_to_nit_bindings
194 # Add gc_choser.h to aditionnal bodies
195 var gc_chooser
= new ExternCFile("gc_chooser.c", "-DWITH_LIBGC")
196 compiler
.extern_bodies
.add
(gc_chooser
)
197 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.c"
198 compiler
.files_to_copy
.add
"{cc_paths.first}/gc_chooser.h"
201 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
202 for m
in compiler
.mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
204 if m
.uses_ffi
or amodule
.uses_legacy_ni
then
205 compiler
.finalize_ffi_for_module
(amodule
)
209 # Copy original .[ch] files to compile_dir
210 for src
in compiler
.files_to_copy
do
211 var basename
= src
.basename
("")
212 var dst
= "{compile_dir}/{basename}"
216 var hfilename
= compiler
.header
.file
.name
+ ".h"
217 var hfilepath
= "{compile_dir}/{hfilename}"
218 var h
= new OFStream.open
(hfilepath
)
219 for l
in compiler
.header
.decl_lines
do
223 for l
in compiler
.header
.lines
do
229 for f
in compiler
.files
do
231 var hfile
: nullable OFStream = null
233 var cfilename
= "{f.name}.0.h"
234 var cfilepath
= "{compile_dir}/{cfilename}"
235 hfile
= new OFStream.open
(cfilepath
)
236 hfile
.write
"#include \"{hfilename}\
"\n"
237 for key
in f
.required_declarations
do
238 if not compiler
.provided_declarations
.has_key
(key
) then
239 print
"No provided declaration for {key}"
242 hfile
.write compiler
.provided_declarations
[key
]
246 var file
: nullable OFStream = null
247 for vis
in f
.writers
do
248 if vis
== compiler
.header
then continue
249 var total_lines
= vis
.lines
.length
+ vis
.decl_lines
.length
250 if total_lines
== 0 then continue
252 if file
== null or count
> 10000 then
254 if file
!= null then file
.close
255 cfilename
= "{f.name}.{i}.c"
256 cfilepath
= "{compile_dir}/{cfilename}"
257 self.toolcontext
.info
("new C source files to compile: {cfilepath}", 3)
258 cfiles
.add
(cfilename
)
259 file
= new OFStream.open
(cfilepath
)
260 file
.write
"#include \"{f.name}.0.h\
"\n"
263 for l
in vis
.decl_lines
do
267 for l
in vis
.lines
do
272 if file
!= null then file
.close
275 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
278 fun write_makefile
(compiler
: AbstractCompiler, compile_dir
: String, cfiles
: Array[String])
280 var mainmodule
= compiler
.mainmodule
282 var outname
= self.toolcontext
.opt_output
.value
283 if outname
== null then
284 outname
= "{mainmodule.name}"
287 var orig_dir
=".." # FIXME only works if `compile_dir` is a subdirectory of cwd
288 var outpath
= orig_dir
.join_path
(outname
).simplify_path
289 var makename
= "{mainmodule.name}.mk"
290 var makepath
= "{compile_dir}/{makename}"
291 var makefile
= new OFStream.open
(makepath
)
295 cc_includes
+= " -I \"" + p + "\
""
298 var linker_options
= new HashSet[String]
299 var m2m
= toolcontext
.modelbuilder
.mmodule2nmodule
300 for m
in mainmodule
.in_importation
.greaters
do if m2m
.keys
.has
(m
) then
302 linker_options
.add
(amod
.c_linker_options
)
305 if not toolcontext
.opt_no_stacktrace
.value
then linker_options
.add
("-lunwind")
307 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nCINCL = {cc_includes}\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc {linker_options.join(" ")}\n\n")
308 makefile
.write
("all: {outpath}\n\n")
310 var ofiles
= new Array[String]
311 var dep_rules
= new Array[String]
312 # Compile each generated file
314 var o
= f
.strip_extension
(".c") + ".o"
315 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) $(CINCL) -D NONITCNI -c -o {o} {f}\n\n")
320 # Compile each required extern body into a specific .o
321 for f
in compiler
.extern_bodies
do
322 if f
isa ExternCFile then
323 var basename
= f
.filename
.basename
(".c")
324 var o
= "{basename}.extern.o"
325 var ff
= f
.filename
.basename
("")
326 makefile
.write
("{o}: {ff}\n\t$(CC) $(CFLAGS) -D NONITCNI {f.cflags} -c -o {o} {ff}\n\n")
330 var o
= f
.makefile_rule_name
331 var ff
= f
.filename
.basename
("")
332 makefile
.write
("{o}: {ff}\n")
333 makefile
.write
("\t{f.makefile_rule_content}\n")
334 dep_rules
.add
(f
.makefile_rule_name
)
336 if f
isa ExternCppFile then ofiles
.add
(o
)
341 makefile
.write
("{outpath}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outpath} {ofiles.join(" ")} $(LDLIBS)\n\n")
343 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
345 self.toolcontext
.info
("Generated makefile: {makepath}", 2)
348 fun compile_c_code
(compiler
: AbstractCompiler, compile_dir
: String)
350 var makename
= "{compiler.mainmodule.name}.mk" # FIXME duplicated from write_makefile
352 var makeflags
= self.toolcontext
.opt_make_flags
.value
353 if makeflags
== null then makeflags
= ""
354 self.toolcontext
.info
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags}", 2)
357 if self.toolcontext
.verbose_level
>= 3 then
358 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1")
360 res
= sys
.system
("make -B -C {compile_dir} -f {makename} -j 4 {makeflags} 2>&1 >/dev/null")
363 toolcontext
.error
(null, "make failed! Error code: {res}.")
368 # Singleton that store the knowledge about the compilation process
369 abstract class AbstractCompiler
370 type VISITOR: AbstractCompilerVisitor
372 # Table corresponding c_names to nit names (methods)
373 var names
= new HashMap[String, String]
375 # The main module of the program currently compiled
376 # Is assigned during the separate compilation
377 var mainmodule
: MModule writable
379 # The real main module of the program
380 var realmainmodule
: MModule
382 # The modeulbuilder used to know the model and the AST
383 var modelbuilder
: ModelBuilder protected writable
385 # Is hardening asked? (see --hardening)
386 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
388 init(mainmodule
: MModule, modelbuilder
: ModelBuilder)
390 self.mainmodule
= mainmodule
391 self.realmainmodule
= mainmodule
392 self.modelbuilder
= modelbuilder
395 # Force the creation of a new file
396 # The point is to avoid contamination between must-be-compiled-separately files
397 fun new_file
(name
: String): CodeFile
399 var f
= new CodeFile(name
)
404 # The list of all associated files
405 # Used to generate .c files
406 var files
: List[CodeFile] = new List[CodeFile]
408 # Initialize a visitor specific for a compiler engine
409 fun new_visitor
: VISITOR is abstract
411 # Where global declaration are stored (the main .h)
412 var header
: CodeWriter writable
414 # Provide a declaration that can be requested (before or latter) by a visitor
415 fun provide_declaration
(key
: String, s
: String)
417 if self.provided_declarations
.has_key
(key
) then
418 assert self.provided_declarations
[key
] == s
420 self.provided_declarations
[key
] = s
423 private var provided_declarations
= new HashMap[String, String]
425 # Builds the .c and .h files to be used when generating a Stack Trace
426 # Binds the generated C function names to Nit function names
427 fun build_c_to_nit_bindings
429 var compile_dir
= modelbuilder
.compile_dir
431 var stream
= new OFStream.open
("{compile_dir}/C_fun_names")
432 stream
.write
("%\{\n#include \"c_functions_hash.h\"\n%\}\n")
433 stream
.write
("%define lookup-function-name get_nit_name\n")
434 stream
.write
("struct C_Nit_Names;\n")
436 stream
.write
("####\n")
437 for i
in names
.keys
do
439 stream
.write
(",\t\"")
440 stream.write(names[i])
443 stream
.write
("####\n")
447 stream
= new OFStream.open
("{compile_dir}/c_functions_hash.h")
448 stream
.write
("typedef struct C_Nit_Names\{char* name; char* nit_name;\}C_Nit_Names;\n")
449 stream
.write
("const struct C_Nit_Names* get_nit_name(register const char *str, register unsigned int len);\n")
452 var x
= new Process("gperf","{compile_dir}/C_fun_names","-t","-7","--output-file={compile_dir}/c_functions_hash.c","-C")
455 extern_bodies
.add
(new ExternCFile("{compile_dir}/c_functions_hash.c", ""))
459 # This method call compile_header_strucs method that has to be refined
460 fun compile_header
do
462 var toolctx
= modelbuilder
.toolcontext
463 self.header
.add_decl
("#include <stdlib.h>")
464 self.header
.add_decl
("#include <stdio.h>")
465 self.header
.add_decl
("#include <string.h>")
466 self.header
.add_decl
("#include \"gc_chooser
.h\
"")
468 compile_header_structs
469 compile_nitni_structs
471 # Signal handler function prototype
472 self.header
.add_decl
("void show_backtrace(int);")
474 # Global variable used by intern methods
475 self.header
.add_decl
("extern int glob_argc;")
476 self.header
.add_decl
("extern char **glob_argv;")
477 self.header
.add_decl
("extern val *glob_sys;")
480 # Declaration of structures for live Nit types
481 protected fun compile_header_structs
is abstract
483 # Declaration of structures for nitni undelying the FFI
484 protected fun compile_nitni_structs
is abstract
486 # Generate the main C function.
488 # * allocate the Sys object if it exists
489 # * call init if is exists
490 # * call main if it exists
491 fun compile_main_function
493 var v
= self.new_visitor
494 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
495 v
.add_decl
("#include \"c_functions_hash
.h\
"")
497 v
.add_decl
("#include <signal.h>")
498 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
499 v
.add_decl
("#define UNW_LOCAL_ONLY")
500 v
.add_decl
("#include <libunwind.h>")
502 v
.add_decl
("int glob_argc;")
503 v
.add_decl
("char **glob_argv;")
504 v
.add_decl
("val *glob_sys;")
506 if self.modelbuilder
.toolcontext
.opt_typing_test_metrics
.value
then
507 for tag
in count_type_test_tags
do
508 v
.add_decl
("long count_type_test_resolved_{tag};")
509 v
.add_decl
("long count_type_test_unresolved_{tag};")
510 v
.add_decl
("long count_type_test_skipped_{tag};")
511 v
.compiler
.header
.add_decl
("extern long count_type_test_resolved_{tag};")
512 v
.compiler
.header
.add_decl
("extern long count_type_test_unresolved_{tag};")
513 v
.compiler
.header
.add_decl
("extern long count_type_test_skipped_{tag};")
517 v
.add_decl
("void sig_handler(int signo)\{")
518 v
.add_decl
("printf(\"Caught signal
: %s\\n\
", strsignal(signo));")
519 v
.add_decl
("show_backtrace(signo);")
522 v
.add_decl
("void show_backtrace (int signo) \{")
523 if not modelbuilder
.toolcontext
.opt_no_stacktrace
.value
then
524 v
.add_decl
("char* opt = getenv(\"NIT_NO_STACK\
");")
525 v
.add_decl
("unw_cursor_t cursor;")
526 v
.add_decl
("if(opt==NULL)\{")
527 v
.add_decl
("unw_context_t uc;")
528 v
.add_decl
("unw_word_t ip;")
529 v
.add_decl
("char* procname = malloc(sizeof(char) * 100);")
530 v
.add_decl
("unw_getcontext(&uc);")
531 v
.add_decl
("unw_init_local(&cursor, &uc);")
532 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
533 v
.add_decl
("printf(\"-- Stack Trace ------------------------------\\n\
");")
534 v
.add_decl
("printf(\"-------------------------------------------------\\n\
");")
535 v
.add_decl
("while (unw_step(&cursor) > 0) \{")
536 v
.add_decl
(" unw_get_proc_name(&cursor, procname, 100, &ip);")
537 if modelbuilder
.toolcontext
.opt_stacktrace
.value
then
538 v
.add_decl
(" const C_Nit_Names* recv = get_nit_name(procname, strlen(procname));")
539 v
.add_decl
(" if (recv != 0)\{")
540 v
.add_decl
(" printf(\"` %s\\n\", recv->nit_name);")
541 v.add_decl(" \}else\{")
542 v.add_decl(" printf(\"` %s\\n\
", procname);")
545 v
.add_decl
(" printf(\"` %s \\n\",procname);")
548 v.add_decl("printf(\"-------------------------------------------------\\n\");")
549 v.add_decl("free(procname);")
552 v.add_decl("exit(signo);")
555 v.add_decl("int main(int argc, char** argv) \{")
557 v.add("signal(SIGABRT, sig_handler);")
558 v.add("signal(SIGFPE, sig_handler);")
559 v.add("signal(SIGILL, sig_handler);")
560 v.add("signal(SIGINT, sig_handler);")
561 v.add("signal(SIGTERM, sig_handler);")
562 v.add("signal(SIGSEGV, sig_handler);")
564 v.add("glob_argc = argc; glob_argv = argv;")
565 v.add("initialize_gc_option();")
566 var main_type = mainmodule.sys_type
567 if main_type != null then
568 var mainmodule = v.compiler.mainmodule
569 var glob_sys = v.init_instance(main_type)
570 v.add("glob_sys = {glob_sys};")
571 var main_init = mainmodule.try_get_primitive_method("init", main_type.mclass)
572 if main_init != null then
573 v.send(main_init, [glob_sys])
575 var main_method = mainmodule.try_get_primitive_method("main", main_type.mclass)
576 if main_method != null then
577 v.send(main_method, [glob_sys])
581 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
582 v.add_decl("long count_type_test_resolved_total = 0;")
583 v.add_decl("long count_type_test_unresolved_total = 0;")
584 v.add_decl("long count_type_test_skipped_total = 0;")
585 v.add_decl("long count_type_test_total_total = 0;")
586 for tag in count_type_test_tags do
587 v.add_decl("long count_type_test_total_{tag};")
588 v.add("count_type_test_total_{tag} = count_type_test_resolved_{tag} + count_type_test_unresolved_{tag} + count_type_test_skipped_{tag};")
589 v.add("count_type_test_resolved_total += count_type_test_resolved_{tag};")
590 v.add("count_type_test_unresolved_total += count_type_test_unresolved_{tag};")
591 v.add("count_type_test_skipped_total += count_type_test_skipped_{tag};")
592 v.add("count_type_test_total_total += count_type_test_total_{tag};")
594 v.add("printf(\"# dynamic count_type_test: total %l\\n\");")
595 v.add("printf(\"\\tresolved\\tunresolved\\tskipped\\ttotal\\n\");")
596 var tags = count_type_test_tags.to_a
599 v.add("printf(\"{tag}\");")
600 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_resolved_{tag}, 100.0*count_type_test_resolved_{tag}/count_type_test_total_total);")
601 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_unresolved_{tag}, 100.0*count_type_test_unresolved_{tag}/count_type_test_total_total);")
602 v.add("printf(\"\\t%ld (%.2f%%)\", count_type_test_skipped_{tag}, 100.0*count_type_test_skipped_{tag}/count_type_test_total_total);")
603 v.add("printf(\"\\t%ld (%.2f%%)\\n\", count_type_test_total_{tag}, 100.0*count_type_test_total_{tag}/count_type_test_total_total);")
611 # List of additional files required to compile (FFI)
612 var extern_bodies = new Array[ExternFile]
614 # List of source files to copy over to the compile dir
615 var files_to_copy = new Array[String]
617 # This is used to avoid adding an extern file more than once
618 private var seen_extern = new ArraySet[String]
620 # Generate code that initialize the attributes on a new instance
621 fun generate_init_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
623 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
624 self.mainmodule.linearize_mclassdefs(cds)
626 var n = self.modelbuilder.mclassdef2nclassdef[cd]
627 for npropdef in n.n_propdefs do
628 if npropdef isa AAttrPropdef then
629 npropdef.init_expr(v, recv)
635 # Generate code that check if an attribute is correctly initialized
636 fun generate_check_attr(v: VISITOR, recv: RuntimeVariable, mtype: MClassType)
638 var cds = mtype.collect_mclassdefs(self.mainmodule).to_a
639 self.mainmodule.linearize_mclassdefs(cds)
641 var n = self.modelbuilder.mclassdef2nclassdef[cd]
642 for npropdef in n.n_propdefs do
643 if npropdef isa AAttrPropdef then
644 npropdef.check_expr(v, recv)
652 var count_type_test_tags: Array[String] = ["isa", "as", "auto", "covariance", "erasure"]
653 var count_type_test_resolved: HashMap[String, Int] = init_count_type_test_tags
654 var count_type_test_unresolved: HashMap[String, Int] = init_count_type_test_tags
655 var count_type_test_skipped: HashMap[String, Int] = init_count_type_test_tags
657 protected fun init_count_type_test_tags: HashMap[String, Int]
659 var res = new HashMap[String, Int]
660 for tag in count_type_test_tags do
666 # Display stats about compilation process
668 # * type tests against resolved types (`x
isa Collection[Animal]`)
669 # * type tests against unresolved types (`x
isa Collection[E
]`)
670 # * type tests skipped
675 if self.modelbuilder.toolcontext.opt_typing_test_metrics.value then
676 print "# static count_type_test"
677 print "\tresolved:\tunresolved\tskipped\ttotal"
678 var count_type_test_total = init_count_type_test_tags
679 count_type_test_resolved["total"] = 0
680 count_type_test_unresolved["total"] = 0
681 count_type_test_skipped["total"] = 0
682 count_type_test_total["total"] = 0
683 for tag in count_type_test_tags do
684 count_type_test_total[tag] = count_type_test_resolved[tag] + count_type_test_unresolved[tag] + count_type_test_skipped[tag]
685 count_type_test_resolved["total"] += count_type_test_resolved[tag]
686 count_type_test_unresolved["total"] += count_type_test_unresolved[tag]
687 count_type_test_skipped["total"] += count_type_test_skipped[tag]
688 count_type_test_total["total"] += count_type_test_total[tag]
690 var count_type_test = count_type_test_total["total"]
691 var tags = count_type_test_tags.to_a
695 printn "\t{count_type_test_resolved[tag]} ({div(count_type_test_resolved[tag],count_type_test)}%)"
696 printn "\t{count_type_test_unresolved[tag]} ({div(count_type_test_unresolved[tag],count_type_test)}%)"
697 printn "\t{count_type_test_skipped[tag]} ({div(count_type_test_skipped[tag],count_type_test)}%)"
698 printn "\t{count_type_test_total[tag]} ({div(count_type_test_total[tag],count_type_test)}%)"
705 # Avoid division by zero by returning the string "n/a"
706 fun div(a,b:Int):String
708 if b == 0 then return "n/a"
709 return ((a*10000/b).to_f / 100.0).to_precision(2)
712 fun finalize_ffi_for_module(nmodule: AModule)
714 var visitor = new_visitor
715 nmodule.finalize_ffi(visitor, modelbuilder)
716 nmodule.finalize_nitni(visitor)
719 # Does this compiler support the FFI?
720 fun supports_ffi: Bool do return false
723 # A file unit (may be more than one file if
724 # A file unit aim to be autonomous and is made or one or more `CodeWriter`s
727 var writers = new Array[CodeWriter]
728 var required_declarations = new HashSet[String]
731 # Where to store generated lines
734 var lines: List[String] = new List[String]
735 var decl_lines: List[String] = new List[String]
737 # Add a line in the main part of the generated C
738 fun add(s: String) do self.lines.add(s)
741 # (used for local or global declaration)
742 fun add_decl(s: String) do self.decl_lines.add(s)
747 file.writers.add(self)
751 # A visitor on the AST of property definition that generate the C code.
752 abstract class AbstractCompilerVisitor
754 type COMPILER: AbstractCompiler
756 # The associated compiler
757 var compiler: COMPILER
759 # The current visited AST node
760 var current_node: nullable ANode writable = null
762 # The current `Frame`
763 var frame: nullable Frame writable
765 # Alias for self.compiler.mainmodule.object_type
766 fun object_type: MClassType do return self.compiler.mainmodule.object_type
768 # Alias for self.compiler.mainmodule.bool_type
769 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
771 var writer: CodeWriter
773 init(compiler: COMPILER)
775 self.compiler = compiler
776 self.writer = new CodeWriter(compiler.files.last)
779 # Force to get the primitive class named `name
` or abort
780 fun get_class(name: String): MClass do return self.compiler.mainmodule.get_primitive_class(name)
782 # Force to get the primitive property named `name
` in the instance `recv
` or abort
783 fun get_property(name: String, recv: MType): MMethod
785 assert recv isa MClassType
786 return self.compiler.modelbuilder.force_get_primitive_method(self.current_node.as(not null), name, recv.mclass, self.compiler.mainmodule)
789 fun compile_callsite(callsite: CallSite, args: Array[RuntimeVariable]): nullable RuntimeVariable
791 return self.send(callsite.mproperty, args)
794 fun calloc_array(ret_type: MType, arguments: Array[RuntimeVariable]) is abstract
796 fun native_array_def(pname: String, ret_type: nullable MType, arguments: Array[RuntimeVariable]) is abstract
798 # Transform varargs, in raw arguments, into a single argument of type `Array`
799 # Note: this method modify the given `args
`
800 # If there is no vararg, then `args
` is not modified.
801 fun varargize(mpropdef: MPropDef, msignature: MSignature, args: Array[RuntimeVariable])
803 var recv = args.first
804 var vararg_rank = msignature.vararg_rank
805 if vararg_rank >= 0 then
806 assert args.length >= msignature.arity + 1 # because of self
808 args = new Array[RuntimeVariable]
810 args.add(rawargs.first) # recv
812 for i in [0..vararg_rank[ do
813 args.add(rawargs[i+1])
816 var vararg_lastrank = vararg_rank + rawargs.length-1-msignature.arity
817 var vararg = new Array[RuntimeVariable]
818 for i in [vararg_rank..vararg_lastrank] do
819 vararg.add(rawargs[i+1])
822 var elttype = msignature.mparameters[vararg_rank].mtype
823 args.add(self.vararg_instance(mpropdef, recv, vararg, elttype))
825 for i in [vararg_lastrank+1..rawargs.length-1[ do
826 args.add(rawargs[i+1])
829 rawargs.add_all(args)
835 # Anchor a type to the main module and the current receiver
836 fun anchor(mtype: MType): MType
838 if not mtype.need_anchor then return mtype
839 return mtype.anchor_to(self.compiler.mainmodule, self.frame.receiver)
842 fun resolve_for(mtype: MType, recv: RuntimeVariable): MType
844 if not mtype.need_anchor then return mtype
845 return mtype.resolve_for(recv.mcasttype, self.frame.receiver, self.compiler.mainmodule, true)
848 # Unsafely cast a value to a new type
849 # ie the result share the same C variable but my have a different mcasttype
850 # NOTE: if the adaptation is useless then `value
` is returned as it.
851 # ENSURE: `result
.name
== value
.name
`
852 fun autoadapt(value: RuntimeVariable, mtype: MType): RuntimeVariable
854 mtype = self.anchor(mtype)
855 var valmtype = value.mcasttype
856 if valmtype.is_subtype(self.compiler.mainmodule, null, mtype) then
860 if valmtype isa MNullableType and valmtype.mtype.is_subtype(self.compiler.mainmodule, null, mtype) then
861 var res = new RuntimeVariable(value.name, valmtype, valmtype.mtype)
864 var res = new RuntimeVariable(value.name, valmtype, mtype)
869 # Generate a super call from a method definition
870 fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
872 fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
874 # Box or unbox a value to another type iff a C type conversion is needed
875 # ENSURE: `result
.mtype
.ctype
== mtype
.ctype
`
876 fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
878 # Generate a polymorphic subtype test
879 fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
881 # Generate the code required to dynamically check if 2 objects share the same runtime type
882 fun is_same_type_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
884 # Generate a Nit "is" for two runtime_variables
885 fun equal_test(value1, value2: RuntimeVariable): RuntimeVariable is abstract
889 # Generate a static call on a method definition
890 fun call(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
892 # Generate a polymorphic send for the method `m
` and the arguments `args
`
893 fun send(m: MMethod, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
895 # Generate a monomorphic send for the method `m
`, the type `t
` and the arguments `args
`
896 fun monomorphic_send(m: MMethod, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
898 assert t isa MClassType
899 var propdef = m.lookup_first_definition(self.compiler.mainmodule, t)
900 return self.call(propdef, t, args)
903 # Generate a monomorphic super send from the method `m
`, the type `t
` and the arguments `args
`
904 fun monomorphic_super_send(m: MMethodDef, t: MType, args: Array[RuntimeVariable]): nullable RuntimeVariable
906 assert t isa MClassType
907 m = m.lookup_next_definition(self.compiler.mainmodule, t)
908 return self.call(m, t, args)
911 # Attributes handling
913 # Generate a polymorphic attribute is_set test
914 fun isset_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
916 # Generate a polymorphic attribute read
917 fun read_attribute(a: MAttribute, recv: RuntimeVariable): RuntimeVariable is abstract
919 # Generate a polymorphic attribute write
920 fun write_attribute(a: MAttribute, recv: RuntimeVariable, value: RuntimeVariable) is abstract
924 # Add a check and an abort for a null reciever if needed
925 fun check_recv_notnull(recv: RuntimeVariable)
927 if self.compiler.modelbuilder.toolcontext.opt_no_check_other.value then return
929 var maybenull = recv.mcasttype isa MNullableType or recv.mcasttype isa MNullType
931 self.add("if ({recv} == NULL) \{")
932 self.add_abort("Receiver is null")
939 private var names: HashSet[String] = new HashSet[String]
940 private var last: Int = 0
942 # Return a new name based on `s
` and unique in the visitor
943 fun get_name(s: String): String
945 if not self.names.has(s) then
949 var i = self.last + 1
952 if not self.names.has(s2) then
961 # Return an unique and stable identifier associated with an escapemark
962 fun escapemark_name(e: nullable EscapeMark): String
965 if escapemark_names.has_key(e) then return escapemark_names[e]
967 if name == null then name = "label"
968 name = get_name(name)
969 escapemark_names[e] = name
973 private var escapemark_names = new HashMap[EscapeMark, String]
975 # Return a "const char*" variable associated to the classname of the dynamic type of an object
976 # NOTE: we do not return a `RuntimeVariable` "NativeString" as the class may not exist in the module/program
977 fun class_name_string(value: RuntimeVariable): String is abstract
981 protected var variables: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
983 # Return the local runtime_variable associated to a Nit local variable
984 fun variable(variable: Variable): RuntimeVariable
986 if self.variables.has_key(variable) then
987 return self.variables[variable]
989 var name = self.get_name("var_{variable.name}")
990 var mtype = variable.declared_type.as(not null)
991 mtype = self.anchor(mtype)
992 var res = new RuntimeVariable(name, mtype, mtype)
993 self.add_decl("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
994 self.variables[variable] = res
999 # Return a new uninitialized local runtime_variable
1000 fun new_var(mtype: MType): RuntimeVariable
1002 mtype = self.anchor(mtype)
1003 var name = self.get_name("var")
1004 var res = new RuntimeVariable(name, mtype, mtype)
1005 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1009 # Return a new uninitialized named runtime_variable
1010 fun new_named_var(mtype: MType, name: String): RuntimeVariable
1012 mtype = self.anchor(mtype)
1013 var res = new RuntimeVariable(name, mtype, mtype)
1014 self.add_decl("{mtype.ctype} {name} /* : {mtype} */;")
1018 # Correctly assign a left and a right value
1019 # Boxing and unboxing is performed if required
1020 fun assign(left, right: RuntimeVariable)
1022 right = self.autobox(right, left.mtype)
1023 self.add("{left} = {right};")
1026 # Generate instances
1028 # Generate a alloc-instance + init-attributes
1029 fun init_instance(mtype: MClassType): RuntimeVariable is abstract
1031 # Generate an integer value
1032 fun int_instance(value: Int): RuntimeVariable
1034 var res = self.new_var(self.get_class("Int").mclass_type)
1035 self.add("{res} = {value};")
1039 # Generate a string value
1040 fun string_instance(string: String): RuntimeVariable
1042 var mtype = self.get_class("String").mclass_type
1043 var name = self.get_name("varonce")
1044 self.add_decl("static {mtype.ctype} {name};")
1045 var res = self.new_var(mtype)
1046 self.add("if ({name}) \{")
1047 self.add("{res} = {name};")
1048 self.add("\} else \{")
1049 var native_mtype = self.get_class("NativeString").mclass_type
1050 var nat = self.new_var(native_mtype)
1051 self.add("{nat} = \"{string.escape_to_c}\";")
1052 var length = self.int_instance(string.length)
1053 self.add("{res} = {self.send(self.get_property("to_s_with_length", native_mtype), [nat, length]).as(not null)};")
1054 self.add("{name} = {res};")
1059 # Generate an array value
1060 fun array_instance(array: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1062 # Get an instance of a array for a vararg
1063 fun vararg_instance(mpropdef: MPropDef, recv: RuntimeVariable, varargs: Array[RuntimeVariable], elttype: MType): RuntimeVariable is abstract
1067 # Add a line in the main part of the generated C
1068 fun add(s: String) do self.writer.lines.add(s)
1071 # (used for local or global declaration)
1072 fun add_decl(s: String) do self.writer.decl_lines.add(s)
1074 # Request the presence of a global declaration
1075 fun require_declaration(key: String)
1077 self.writer.file.required_declarations.add(key)
1080 # Add a declaration in the local-header
1081 # The declaration is ensured to be present once
1082 fun declare_once(s: String)
1084 self.compiler.provide_declaration(s, s)
1085 self.require_declaration(s)
1088 # look for a needed .h and .c file for a given .nit source-file
1089 # FIXME: bad API, parameter should be a `MModule`, not its source-file
1090 fun add_extern(file: String)
1092 file = file.strip_extension(".nit")
1093 var tryfile = file + ".nit.h"
1094 if tryfile.file_exists then
1095 self.declare_once("#include \"{tryfile.basename("")}\"")
1096 self.compiler.files_to_copy.add(tryfile)
1098 tryfile = file + "_nit.h"
1099 if tryfile.file_exists then
1100 self.declare_once("#include \"{tryfile.basename("")}\"")
1101 self.compiler.files_to_copy.add(tryfile)
1104 if self.compiler.seen_extern.has(file) then return
1105 self.compiler.seen_extern.add(file)
1106 tryfile = file + ".nit.c"
1107 if not tryfile.file_exists then
1108 tryfile = file + "_nit.c"
1109 if not tryfile.file_exists then return
1111 var f = new ExternCFile(tryfile.basename(""), "")
1112 self.compiler.extern_bodies.add(f)
1113 self.compiler.files_to_copy.add(tryfile)
1116 # Return a new local runtime_variable initialized with the C expression `cexpr
`.
1117 fun new_expr(cexpr: String, mtype: MType): RuntimeVariable
1119 var res = new_var(mtype)
1120 self.add("{res} = {cexpr};")
1124 # Generate generic abort
1125 # used by aborts, asserts, casts, etc.
1126 fun add_abort(message: String)
1128 self.add("fprintf(stderr, \"Runtime error: %s\", \"{message.escape_to_c}\");")
1134 if self.current_node != null and self.current_node.location.file != null then
1135 self.add("fprintf(stderr, \" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
1137 self.add("fprintf(stderr, \"\\n\");")
1139 self.add("show_backtrace(1);")
1142 # Add a dynamic cast
1143 fun add_cast(value: RuntimeVariable, mtype: MType, tag: String)
1145 var res = self.type_test(value, mtype, tag)
1146 self.add("if (!{res}) \{")
1147 var cn = self.class_name_string(value)
1148 self.add("fprintf(stderr, \"Runtime error: Cast failed. Expected `%s
`, got `%s
`\", \"{mtype.to_s.escape_to_c}\", {cn});")
1153 # Generate a return with the value `s
`
1154 fun ret(s: RuntimeVariable)
1156 self.assign(self.frame.returnvar.as(not null), s)
1157 self.add("goto {self.frame.returnlabel.as(not null)};")
1160 # Compile a statement (if any)
1161 fun stmt(nexpr: nullable AExpr)
1163 if nexpr == null then return
1164 var old = self.current_node
1165 self.current_node = nexpr
1167 self.current_node = old
1170 # Compile an expression an return its result
1171 # `mtype
` is the expected return type, pass null if no specific type is expected.
1172 fun expr(nexpr: AExpr, mtype: nullable MType): RuntimeVariable
1174 var old = self.current_node
1175 self.current_node = nexpr
1176 var res = nexpr.expr(self).as(not null)
1177 if mtype != null then
1178 mtype = self.anchor(mtype)
1179 res = self.autobox(res, mtype)
1181 res = autoadapt(res, nexpr.mtype.as(not null))
1182 var implicit_cast_to = nexpr.implicit_cast_to
1183 if implicit_cast_to != null and not self.compiler.modelbuilder.toolcontext.opt_no_check_autocast.value then
1184 add_cast(res, implicit_cast_to, "auto")
1185 res = autoadapt(res, implicit_cast_to)
1187 self.current_node = old
1191 # Alias for `self.expr
(nexpr
, self.bool_type
)`
1192 fun expr_bool(nexpr: AExpr): RuntimeVariable do return expr(nexpr, bool_type)
1194 # Safely show a debug message on the current node and repeat the message in the C code as a comment
1195 fun debug(message: String)
1197 var node = self.current_node
1198 if node == null then
1199 print "?: {message}"
1203 self.add("/* DEBUG: {message} */")
1207 # A C function associated to a Nit method
1208 # Because of customization, a given Nit method can be compiler more that once
1209 abstract class AbstractRuntimeFunction
1211 type COMPILER: AbstractCompiler
1212 type VISITOR: AbstractCompilerVisitor
1214 # The associated Nit method
1215 var mmethoddef: MMethodDef
1217 # The mangled c name of the runtime_function
1218 # Subclasses should redefine `build_c_name
` instead
1221 var res = self.c_name_cache
1222 if res != null then return res
1223 res = self.build_c_name
1224 self.c_name_cache = res
1228 # Non cached version of `c_name
`
1229 protected fun build_c_name: String is abstract
1231 protected var c_name_cache: nullable String writable = null
1233 # Implements a call of the runtime_function
1234 # May inline the body or generate a C function call
1235 fun call(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
1237 # Generate the code for the `AbstractRuntimeFunction`
1238 # Warning: compile more than once compilation makes CC unhappy
1239 fun compile_to_c(compiler: COMPILER) is abstract
1242 # A runtime variable hold a runtime value in C.
1243 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
1245 # 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.
1246 class RuntimeVariable
1247 # The name of the variable in the C code
1250 # The static type of the variable (as declard in C)
1253 # The current casted type of the variable (as known in Nit)
1254 var mcasttype: MType writable
1256 # If the variable exaclty a mcasttype?
1257 # false (usual value) means that the variable is a mcasttype or a subtype.
1258 var is_exact: Bool writable = false
1260 init(name: String, mtype: MType, mcasttype: MType)
1264 self.mcasttype = mcasttype
1265 assert not mtype.need_anchor
1266 assert not mcasttype.need_anchor
1269 redef fun to_s do return name
1274 if self.is_exact then
1275 exact_str = " exact"
1280 if self.mtype == self.mcasttype then
1281 type_str = "{mtype}{exact_str}"
1283 type_str = "{mtype}({mcasttype}{exact_str})"
1285 return "<{name}:{type_str}>"
1289 # A frame correspond to a visited property in a `GlobalCompilerVisitor`
1292 type VISITOR: AbstractCompilerVisitor
1294 # The associated visitor
1295 var visitor: VISITOR
1297 # The executed property.
1298 # A Method in case of a call, an attribute in case of a default initialization.
1299 var mpropdef: MPropDef
1301 # The static type of the receiver
1302 var receiver: MClassType
1304 # Arguments of the method (the first is the receiver)
1305 var arguments: Array[RuntimeVariable]
1307 # The runtime_variable associated to the return (in a function)
1308 var returnvar: nullable RuntimeVariable writable = null
1310 # The label at the end of the property
1311 var returnlabel: nullable String writable = null
1315 # Return the C type associated to a given Nit static type
1316 fun ctype: String do return "val*"
1318 fun ctypename: String do return "val"
1320 # Return the name of the C structure associated to a Nit live type
1321 fun c_name: String is abstract
1322 protected var c_name_cache: nullable String protected writable
1325 redef class MClassType
1328 var res = self.c_name_cache
1329 if res != null then return res
1330 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
1331 self.c_name_cache = res
1335 redef fun ctype: String
1337 if mclass.name == "Int" then
1339 else if mclass.name == "Bool" then
1341 else if mclass.name == "Char" then
1343 else if mclass.name == "Float" then
1345 else if mclass.name == "NativeString" then
1347 else if mclass.name == "NativeArray" then
1349 else if mclass.kind == extern_kind then
1356 redef fun ctypename: String
1358 if mclass.name == "Int" then
1360 else if mclass.name == "Bool" then
1362 else if mclass.name == "Char" then
1364 else if mclass.name == "Float" then
1366 else if mclass.name == "NativeString" then
1368 else if mclass.name == "NativeArray" then
1369 #return "{self.arguments.first.ctype}*"
1371 else if mclass.kind == extern_kind then
1379 redef class MGenericType
1382 var res = self.c_name_cache
1383 if res != null then return res
1385 for t in self.arguments do
1386 res = res + t.c_name
1388 self.c_name_cache = res
1393 redef class MParameterType
1396 var res = self.c_name_cache
1397 if res != null then return res
1398 res = "{self.mclass.c_name}_FT{self.rank}"
1399 self.c_name_cache = res
1404 redef class MVirtualType
1407 var res = self.c_name_cache
1408 if res != null then return res
1409 res = "{self.mproperty.intro.mclassdef.mclass.c_name}_VT{self.mproperty.name}"
1410 self.c_name_cache = res
1415 redef class MNullableType
1418 var res = self.c_name_cache
1419 if res != null then return res
1420 res = "nullable_{self.mtype.c_name}"
1421 self.c_name_cache = res
1427 # Return the name of the C structure associated to a Nit class
1428 fun c_name: String do
1429 var res = self.c_name_cache
1430 if res != null then return res
1431 res = "{intro_mmodule.name.to_cmangle}__{name.to_cmangle}"
1432 self.c_name_cache = res
1435 private var c_name_cache: nullable String
1438 redef class MProperty
1439 fun c_name: String do
1440 var res = self.c_name_cache
1441 if res != null then return res
1442 res = "{self.intro.c_name}"
1443 self.c_name_cache = res
1446 private var c_name_cache: nullable String
1449 redef class MPropDef
1450 type VISITOR: AbstractCompilerVisitor
1452 private var c_name_cache: nullable String
1454 # The mangled name associated to the property
1457 var res = self.c_name_cache
1458 if res != null then return res
1459 res = "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1460 self.c_name_cache = res
1465 redef class MMethodDef
1466 # Can the body be inlined?
1467 fun can_inline(v: VISITOR): Bool
1469 var modelbuilder = v.compiler.modelbuilder
1470 if modelbuilder.mpropdef2npropdef.has_key(self) then
1471 var npropdef = modelbuilder.mpropdef2npropdef[self]
1472 return npropdef.can_inline
1473 else if self.mproperty.name == "init" then
1474 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1481 # Inline the body in another visitor
1482 fun compile_inside_to_c(v: VISITOR, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
1484 var modelbuilder = v.compiler.modelbuilder
1485 if modelbuilder.mpropdef2npropdef.has_key(self) then
1486 var npropdef = modelbuilder.mpropdef2npropdef[self]
1487 var oldnode = v.current_node
1488 v.current_node = npropdef
1489 self.compile_parameter_check(v, arguments)
1490 npropdef.compile_to_c(v, self, arguments)
1491 v.current_node = oldnode
1492 else if self.mproperty.name == "init" then
1493 var nclassdef = modelbuilder.mclassdef2nclassdef[self.mclassdef]
1494 var oldnode = v.current_node
1495 v.current_node = nclassdef
1496 self.compile_parameter_check(v, arguments)
1497 nclassdef.compile_to_c(v, self, arguments)
1498 v.current_node = oldnode
1505 # Generate type checks in the C code to check covariant parameters
1506 fun compile_parameter_check(v: VISITOR, arguments: Array[RuntimeVariable])
1508 if v.compiler.modelbuilder.toolcontext.opt_no_check_covariance.value then return
1510 for i in [0..msignature.arity[ do
1511 # skip test for vararg since the array is instantiated with the correct polymorphic type
1512 if msignature.vararg_rank == i then continue
1514 # skip if the cast is not required
1515 var origmtype = self.mproperty.intro.msignature.mparameters[i].mtype
1516 if not origmtype.need_anchor then continue
1518 # get the parameter type
1519 var mtype = self.msignature.mparameters[i].mtype
1522 # note that v decides if and how to implements the cast
1523 v.add("/* Covariant cast for argument {i} ({self.msignature.mparameters[i].name}) {arguments[i+1].inspect} isa {mtype} */")
1524 v.add_cast(arguments[i+1], mtype, "covariance")
1531 redef class APropdef
1532 fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1534 v.add("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at {location.to_s}\\n\");")
1535 debug("Not yet implemented")
1538 fun can_inline: Bool do return true
1541 redef class AConcreteMethPropdef
1542 redef fun compile_to_c(v, mpropdef, arguments)
1544 for i in [0..mpropdef.msignature.arity[ do
1545 var variable = self.n_signature.n_params[i].variable.as(not null)
1546 v.assign(v.variable(variable), arguments[i+1])
1548 # Call the implicit super-init
1549 var auto_super_inits = self.auto_super_inits
1550 if auto_super_inits != null then
1551 var args = [arguments.first]
1552 for auto_super_init in auto_super_inits do
1554 for i in [0..auto_super_init.msignature.arity+1[ do
1555 args.add(arguments[i])
1557 v.compile_callsite(auto_super_init, args)
1560 v.stmt(self.n_block)
1563 redef fun can_inline
1565 if self.auto_super_inits != null then return false
1566 var nblock = self.n_block
1567 if nblock == null then return true
1568 if (mpropdef.mproperty.name == "==" or mpropdef.mproperty.name == "!=") and mpropdef.mclassdef.mclass.name == "Object" then return true
1569 if nblock isa ABlockExpr and nblock.n_expr.length == 0 then return true
1574 redef class AInternMethPropdef
1575 redef fun compile_to_c(v, mpropdef, arguments)
1577 var pname = mpropdef.mproperty.name
1578 var cname = mpropdef.mclassdef.mclass.name
1579 var ret = mpropdef.msignature.return_mtype
1581 ret = v.resolve_for(ret, arguments.first)
1583 if pname != "==" and pname != "!=" then
1584 v.adapt_signature(mpropdef, arguments)
1586 if cname == "Int" then
1587 if pname == "output" then
1588 v.add("printf(\"%ld\\n\", {arguments.first});")
1590 else if pname == "object_id" then
1591 v.ret(arguments.first)
1593 else if pname == "+" then
1594 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1596 else if pname == "-" then
1597 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1599 else if pname == "unary -" then
1600 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1602 else if pname == "succ" then
1603 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1605 else if pname == "prec" then
1606 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1608 else if pname == "*" then
1609 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1611 else if pname == "/" then
1612 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1614 else if pname == "%" then
1615 v.ret(v.new_expr("{arguments[0]} % {arguments[1]}", ret.as(not null)))
1617 else if pname == "lshift" then
1618 v.ret(v.new_expr("{arguments[0]} << {arguments[1]}", ret.as(not null)))
1620 else if pname == "rshift" then
1621 v.ret(v.new_expr("{arguments[0]} >> {arguments[1]}", ret.as(not null)))
1623 else if pname == "==" then
1624 v.ret(v.equal_test(arguments[0], arguments[1]))
1626 else if pname == "!=" then
1627 var res = v.equal_test(arguments[0], arguments[1])
1628 v.ret(v.new_expr("!{res}", ret.as(not null)))
1630 else if pname == "<" then
1631 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1633 else if pname == ">" then
1634 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1636 else if pname == "<=" then
1637 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1639 else if pname == ">=" then
1640 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1642 else if pname == "to_f" then
1643 v.ret(v.new_expr("(double){arguments[0]}", ret.as(not null)))
1645 else if pname == "ascii" then
1646 v.ret(v.new_expr("{arguments[0]}", ret.as(not null)))
1649 else if cname == "Char" then
1650 if pname == "output" then
1651 v.add("printf(\"%c\", {arguments.first});")
1653 else if pname == "object_id" then
1654 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1656 else if pname == "+" then
1657 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1659 else if pname == "-" then
1660 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1662 else if pname == "==" then
1663 v.ret(v.equal_test(arguments[0], arguments[1]))
1665 else if pname == "!=" then
1666 var res = v.equal_test(arguments[0], arguments[1])
1667 v.ret(v.new_expr("!{res}", ret.as(not null)))
1669 else if pname == "succ" then
1670 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1672 else if pname == "prec" then
1673 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1675 else if pname == "<" then
1676 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1678 else if pname == ">" then
1679 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1681 else if pname == "<=" 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 == "to_i" then
1688 v.ret(v.new_expr("{arguments[0]}-'0'", ret.as(not null)))
1690 else if pname == "ascii" then
1691 v.ret(v.new_expr("(unsigned char){arguments[0]}", ret.as(not null)))
1694 else if cname == "Bool" then
1695 if pname == "output" then
1696 v.add("printf({arguments.first}?\"true\\n\":\"false\\n\");")
1698 else if pname == "object_id" then
1699 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1701 else if pname == "==" then
1702 v.ret(v.equal_test(arguments[0], arguments[1]))
1704 else if pname == "!=" then
1705 var res = v.equal_test(arguments[0], arguments[1])
1706 v.ret(v.new_expr("!{res}", ret.as(not null)))
1709 else if cname == "Float" then
1710 if pname == "output" then
1711 v.add("printf(\"%f\\n\", {arguments.first});")
1713 else if pname == "object_id" then
1714 v.ret(v.new_expr("(double){arguments.first}", ret.as(not null)))
1716 else if pname == "+" then
1717 v.ret(v.new_expr("{arguments[0]} + {arguments[1]}", ret.as(not null)))
1719 else if pname == "-" then
1720 v.ret(v.new_expr("{arguments[0]} - {arguments[1]}", ret.as(not null)))
1722 else if pname == "unary -" then
1723 v.ret(v.new_expr("-{arguments[0]}", ret.as(not null)))
1725 else if pname == "succ" then
1726 v.ret(v.new_expr("{arguments[0]}+1", ret.as(not null)))
1728 else if pname == "prec" then
1729 v.ret(v.new_expr("{arguments[0]}-1", ret.as(not null)))
1731 else if pname == "*" then
1732 v.ret(v.new_expr("{arguments[0]} * {arguments[1]}", ret.as(not null)))
1734 else if pname == "/" then
1735 v.ret(v.new_expr("{arguments[0]} / {arguments[1]}", ret.as(not null)))
1737 else if pname == "==" then
1738 v.ret(v.equal_test(arguments[0], arguments[1]))
1740 else if pname == "!=" then
1741 var res = v.equal_test(arguments[0], arguments[1])
1742 v.ret(v.new_expr("!{res}", ret.as(not null)))
1744 else if pname == "<" then
1745 v.ret(v.new_expr("{arguments[0]} < {arguments[1]}", ret.as(not null)))
1747 else if pname == ">" then
1748 v.ret(v.new_expr("{arguments[0]} > {arguments[1]}", ret.as(not null)))
1750 else if pname == "<=" then
1751 v.ret(v.new_expr("{arguments[0]} <= {arguments[1]}", ret.as(not null)))
1753 else if pname == ">=" then
1754 v.ret(v.new_expr("{arguments[0]} >= {arguments[1]}", ret.as(not null)))
1756 else if pname == "to_i" then
1757 v.ret(v.new_expr("(long){arguments[0]}", ret.as(not null)))
1760 else if cname == "NativeString" then
1761 if pname == "[]" then
1762 v.ret(v.new_expr("{arguments[0]}[{arguments[1]}]", ret.as(not null)))
1764 else if pname == "[]=" then
1765 v.add("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1767 else if pname == "copy_to" then
1768 v.add("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1770 else if pname == "atoi" then
1771 v.ret(v.new_expr("atoi({arguments[0]});", ret.as(not null)))
1774 else if cname == "NativeArray" then
1775 v.native_array_def(pname, ret, arguments)
1778 if pname == "exit" then
1779 v.add("exit({arguments[1]});")
1781 else if pname == "sys" then
1782 v.ret(v.new_expr("glob_sys", ret.as(not null)))
1784 else if pname == "calloc_string" then
1785 v.ret(v.new_expr("(char*)nit_alloc({arguments[1]})", ret.as(not null)))
1787 else if pname == "calloc_array" then
1788 v.calloc_array(ret.as(not null), arguments)
1790 else if pname == "object_id" then
1791 v.ret(v.new_expr("(long){arguments.first}", ret.as(not null)))
1793 else if pname == "is_same_type" then
1794 v.ret(v.is_same_type_test(arguments[0], arguments[1]))
1796 else if pname == "is_same_instance" then
1797 v.ret(v.equal_test(arguments[0], arguments[1]))
1799 else if pname == "output_class_name" then
1800 var nat = v.class_name_string(arguments.first)
1801 v.add("printf(\"%s\\n\", {nat});")
1803 else if pname == "native_class_name" then
1804 var nat = v.class_name_string(arguments.first)
1805 v.ret(v.new_expr("(char*){nat}", ret.as(not null)))
1807 else if pname == "force_garbage_collection" then
1808 v.add("nit_gcollect();")
1810 else if pname == "native_argc" then
1811 v.ret(v.new_expr("glob_argc", ret.as(not null)))
1813 else if pname == "native_argv" then
1814 v.ret(v.new_expr("glob_argv[{arguments[1]}]", ret.as(not null)))
1817 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at {location.to_s}\\n\");")
1818 debug("Not implemented {mpropdef}")
1822 redef class AExternMethPropdef
1823 redef fun compile_to_c(v, mpropdef, arguments)
1826 var nextern = self.n_extern
1827 if nextern == null then
1828 v.add("fprintf(stderr, \"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1829 v.add("show_backtrace(1);")
1832 externname = nextern.text.substring(1, nextern.text.length-2)
1833 if location.file != null then
1834 var file = location.file.filename
1837 var res: nullable RuntimeVariable = null
1838 var ret = mpropdef.msignature.return_mtype
1840 ret = v.resolve_for(ret, arguments.first)
1841 res = v.new_var(ret)
1843 v.adapt_signature(mpropdef, arguments)
1846 v.add("{externname}({arguments.join(", ")});")
1848 v.add("{res} = {externname}({arguments.join(", ")});")
1854 redef class AExternInitPropdef
1855 redef fun compile_to_c(v, mpropdef, arguments)
1858 var nextern = self.n_extern
1859 if nextern == null then
1860 v.add("printf(\"NOT YET IMPLEMENTED nitni for {mpropdef} at {location.to_s}\\n\");")
1861 v.add("show_backtrace(1);")
1864 externname = nextern.text.substring(1, nextern.text.length-2)
1865 if location.file != null then
1866 var file = location.file.filename
1869 v.adapt_signature(mpropdef, arguments)
1870 var ret = arguments.first.mtype
1871 var res = v.new_var(ret)
1875 v.add("{res} = {externname}({arguments.join(", ")});")
1880 redef class AAttrPropdef
1881 redef fun compile_to_c(v, mpropdef, arguments)
1883 if arguments.length == 1 then
1884 var res = v.read_attribute(self.mpropdef.mproperty, arguments.first)
1885 v.assign(v.frame.returnvar.as(not null), res)
1887 v.write_attribute(self.mpropdef.mproperty, arguments.first, arguments[1])
1891 fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1893 var nexpr = self.n_expr
1894 if nexpr != null then
1895 var oldnode = v.current_node
1896 v.current_node = self
1897 var old_frame = v.frame
1898 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1900 var value = v.expr(nexpr, self.mpropdef.static_mtype)
1901 v.write_attribute(self.mpropdef.mproperty, recv, value)
1903 v.current_node = oldnode
1907 fun check_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
1909 var nexpr = self.n_expr
1910 if nexpr != null then return
1912 var oldnode = v.current_node
1913 v.current_node = self
1914 var old_frame = v.frame
1915 var frame = new Frame(v, self.mpropdef.as(not null), recv.mtype.as(MClassType), [recv])
1917 # Force read to check the initialization
1918 v.read_attribute(self.mpropdef.mproperty, recv)
1920 v.current_node = oldnode
1924 redef class AClassdef
1925 private fun compile_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable])
1927 if mpropdef == self.mfree_init then
1928 var super_inits = self.super_inits
1929 if super_inits != null then
1930 assert arguments.length == 1
1931 for su in super_inits do
1932 v.send(su, arguments)
1936 var recv = arguments.first
1938 # Collect undefined attributes
1939 for npropdef in self.n_propdefs do
1940 if npropdef isa AAttrPropdef and npropdef.n_expr == null then
1941 v.write_attribute(npropdef.mpropdef.mproperty, recv, arguments[i])
1951 redef class ADeferredMethPropdef
1952 redef fun compile_to_c(v, mpropdef, arguments) do
1953 var cn = v.class_name_string(arguments.first)
1954 v.add("fprintf(stderr, \"Runtime error: Abstract method `%s
` called on `%s
`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
1957 redef fun can_inline do return true
1961 # Try to compile self as an expression
1962 # Do not call this method directly, use `v
.expr
` instead
1963 private fun expr(v: AbstractCompilerVisitor): nullable RuntimeVariable
1965 v.add("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\");")
1966 var mtype = self.mtype
1967 if mtype == null then
1970 var res = v.new_var(mtype)
1971 v.add("/* {res} = NOT YET {class_name} */")
1976 # Try to compile self as a statement
1977 # Do not call this method directly, use `v
.stmt
` instead
1978 private fun stmt(v: AbstractCompilerVisitor)
1981 if res != null then v.add("{res};")
1985 redef class ABlockExpr
1988 for e in self.n_expr do v.stmt(e)
1992 var last = self.n_expr.last
1993 for e in self.n_expr do
1994 if e == last then break
1997 return v.expr(last, null)
2001 redef class AVardeclExpr
2004 var variable = self.variable.as(not null)
2005 var ne = self.n_expr
2007 var i = v.expr(ne, variable.declared_type)
2008 v.assign(v.variable(variable), i)
2013 redef class AVarExpr
2016 var res = v.variable(self.variable.as(not null))
2017 var mtype = self.mtype.as(not null)
2018 return v.autoadapt(res, mtype)
2022 redef class AVarAssignExpr
2025 var variable = self.variable.as(not null)
2026 var i = v.expr(self.n_value, variable.declared_type)
2027 v.assign(v.variable(variable), i)
2031 var variable = self.variable.as(not null)
2032 var i = v.expr(self.n_value, variable.declared_type)
2033 v.assign(v.variable(variable), i)
2038 redef class AVarReassignExpr
2041 var variable = self.variable.as(not null)
2042 var vari = v.variable(variable)
2043 var value = v.expr(self.n_value, variable.declared_type)
2044 var res = v.compile_callsite(self.reassign_callsite.as(not null), [vari, value])
2046 v.assign(v.variable(variable), res)
2050 redef class ASelfExpr
2051 redef fun expr(v) do return v.frame.arguments.first
2054 redef class AContinueExpr
2055 redef fun stmt(v) do v.add("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2058 redef class ABreakExpr
2059 redef fun stmt(v) do v.add("goto BREAK_{v.escapemark_name(self.escapemark)};")
2062 redef class AReturnExpr
2065 var nexpr = self.n_expr
2066 if nexpr != null then
2067 var returnvar = v.frame.returnvar.as(not null)
2068 var i = v.expr(nexpr, returnvar.mtype)
2069 v.assign(returnvar, i)
2071 v.add("goto {v.frame.returnlabel.as(not null)};")
2075 redef class AAbortExpr
2076 redef fun stmt(v) do v.add_abort("Aborted")
2082 var cond = v.expr_bool(self.n_expr)
2083 v.add("if ({cond})\{")
2092 var res = v.new_var(self.mtype.as(not null))
2093 var cond = v.expr_bool(self.n_expr)
2094 v.add("if ({cond})\{")
2095 v.assign(res, v.expr(self.n_then.as(not null), null))
2097 v.assign(res, v.expr(self.n_else.as(not null), null))
2103 redef class AIfexprExpr
2106 var res = v.new_var(self.mtype.as(not null))
2107 var cond = v.expr_bool(self.n_expr)
2108 v.add("if ({cond})\{")
2109 v.assign(res, v.expr(self.n_then, null))
2111 v.assign(res, v.expr(self.n_else, null))
2120 v.stmt(self.n_block)
2121 var escapemark = self.escapemark
2122 if escapemark != null then
2123 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2128 redef class AWhileExpr
2132 var cond = v.expr_bool(self.n_expr)
2133 v.add("if (!{cond}) break;")
2134 v.stmt(self.n_block)
2135 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2137 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2141 redef class ALoopExpr
2145 v.stmt(self.n_block)
2146 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2148 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2152 redef class AForExpr
2155 # Shortcut on explicit range
2156 # Avoid the instantiation of the range and the iterator
2157 var nexpr = self.n_expr
2158 if self.variables.length == 1 and nexpr isa AOrangeExpr and not v.compiler.modelbuilder.toolcontext.opt_no_shortcut_range.value then
2159 var from = v.expr(nexpr.n_expr, null)
2160 var to = v.expr(nexpr.n_expr2, null)
2161 var variable = v.variable(variables.first)
2163 v.assign(variable, from)
2164 v.add("for(;;) \{ /* shortcut range */")
2166 var ok = v.send(v.get_property("<", variable.mtype), [variable, to])
2168 v.add("if(!{ok}) break;")
2170 v.stmt(self.n_block)
2172 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2173 var succ = v.send(v.get_property("succ", variable.mtype), [variable])
2175 v.assign(variable, succ)
2177 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2181 var cl = v.expr(self.n_expr, null)
2182 var it_meth = self.method_iterator
2183 assert it_meth != null
2184 var it = v.send(it_meth, [cl])
2187 var isok_meth = self.method_is_ok
2188 assert isok_meth != null
2189 var ok = v.send(isok_meth, [it])
2191 v.add("if(!{ok}) break;")
2192 if self.variables.length == 1 then
2193 var item_meth = self.method_item
2194 assert item_meth != null
2195 var i = v.send(item_meth, [it])
2197 v.assign(v.variable(variables.first), i)
2198 else if self.variables.length == 2 then
2199 var key_meth = self.method_key
2200 assert key_meth != null
2201 var i = v.send(key_meth, [it])
2203 v.assign(v.variable(variables[0]), i)
2204 var item_meth = self.method_item
2205 assert item_meth != null
2206 i = v.send(item_meth, [it])
2208 v.assign(v.variable(variables[1]), i)
2212 v.stmt(self.n_block)
2213 v.add("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2214 var next_meth = self.method_next
2215 assert next_meth != null
2216 v.send(next_meth, [it])
2218 v.add("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2222 redef class AAssertExpr
2225 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return
2227 var cond = v.expr_bool(self.n_expr)
2228 v.add("if (!{cond}) \{")
2232 v.add_abort("Assert '{nid.text}' failed")
2234 v.add_abort("Assert failed")
2243 var res = v.new_var(self.mtype.as(not null))
2244 var i1 = v.expr_bool(self.n_expr)
2245 v.add("if ({i1}) \{")
2248 var i2 = v.expr_bool(self.n_expr2)
2249 v.add("{res} = {i2};")
2255 redef class AImpliesExpr
2258 var res = v.new_var(self.mtype.as(not null))
2259 var i1 = v.expr_bool(self.n_expr)
2260 v.add("if (!{i1}) \{")
2263 var i2 = v.expr_bool(self.n_expr2)
2264 v.add("{res} = {i2};")
2270 redef class AAndExpr
2273 var res = v.new_var(self.mtype.as(not null))
2274 var i1 = v.expr_bool(self.n_expr)
2275 v.add("if (!{i1}) \{")
2278 var i2 = v.expr_bool(self.n_expr2)
2279 v.add("{res} = {i2};")
2285 redef class ANotExpr
2288 var cond = v.expr_bool(self.n_expr)
2289 return v.new_expr("!{cond}", self.mtype.as(not null))
2293 redef class AOrElseExpr
2296 var res = v.new_var(self.mtype.as(not null))
2297 var i1 = v.expr(self.n_expr, null)
2298 v.add("if ({i1}!=NULL) \{")
2301 var i2 = v.expr(self.n_expr2, null)
2308 redef class AIntExpr
2309 redef fun expr(v) do return v.new_expr("{self.value.to_s}", self.mtype.as(not null))
2312 redef class AFloatExpr
2313 redef fun expr(v) do return v.new_expr("{self.n_float.text}", self.mtype.as(not null)) # FIXME use value, not n_float
2316 redef class ACharExpr
2317 redef fun expr(v) do return v.new_expr("'{self.value.to_s.escape_to_c}'", self.mtype.as(not null))
2320 redef class AArrayExpr
2323 var mtype = self.mtype.as(MClassType).arguments.first
2324 var array = new Array[RuntimeVariable]
2325 for nexpr in self.n_exprs.n_exprs do
2326 var i = v.expr(nexpr, mtype)
2329 return v.array_instance(array, mtype)
2333 redef class AStringFormExpr
2334 redef fun expr(v) do return v.string_instance(self.value.as(not null))
2337 redef class ASuperstringExpr
2340 var array = new Array[RuntimeVariable]
2341 for ne in self.n_exprs do
2342 if ne isa AStringFormExpr and ne.value == "" then continue # skip empty sub-strings
2343 var i = v.expr(ne, null)
2346 var a = v.array_instance(array, v.object_type)
2347 var res = v.send(v.get_property("to_s", a.mtype), [a])
2352 redef class ACrangeExpr
2355 var i1 = v.expr(self.n_expr, null)
2356 var i2 = v.expr(self.n_expr2, null)
2357 var mtype = self.mtype.as(MClassType)
2358 var res = v.init_instance(mtype)
2359 var it = v.send(v.get_property("init", res.mtype), [res, i1, i2])
2364 redef class AOrangeExpr
2367 var i1 = v.expr(self.n_expr, null)
2368 var i2 = v.expr(self.n_expr2, null)
2369 var mtype = self.mtype.as(MClassType)
2370 var res = v.init_instance(mtype)
2371 var it = v.send(v.get_property("without_last", res.mtype), [res, i1, i2])
2376 redef class ATrueExpr
2377 redef fun expr(v) do return v.new_expr("1", self.mtype.as(not null))
2380 redef class AFalseExpr
2381 redef fun expr(v) do return v.new_expr("0", self.mtype.as(not null))
2384 redef class ANullExpr
2385 redef fun expr(v) do return v.new_expr("NULL", self.mtype.as(not null))
2388 redef class AIsaExpr
2391 var i = v.expr(self.n_expr, null)
2392 return v.type_test(i, self.cast_type.as(not null), "isa")
2396 redef class AAsCastExpr
2399 var i = v.expr(self.n_expr, null)
2400 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2402 v.add_cast(i, self.mtype.as(not null), "as")
2407 redef class AAsNotnullExpr
2410 var i = v.expr(self.n_expr, null)
2411 if v.compiler.modelbuilder.toolcontext.opt_no_check_assert.value then return i
2413 v.add("if ({i} == NULL) \{")
2414 v.add_abort("Cast failed")
2420 redef class AParExpr
2421 redef fun expr(v) do return v.expr(self.n_expr, null)
2424 redef class AOnceExpr
2427 var mtype = self.mtype.as(not null)
2428 var name = v.get_name("varonce")
2429 var guard = v.get_name(name + "_guard")
2430 v.add_decl("static {mtype.ctype} {name};")
2431 v.add_decl("static int {guard};")
2432 var res = v.new_var(mtype)
2433 v.add("if ({guard}) \{")
2434 v.add("{res} = {name};")
2436 var i = v.expr(self.n_expr, mtype)
2437 v.add("{res} = {i};")
2438 v.add("{name} = {res};")
2439 v.add("{guard} = 1;")
2445 redef class ASendExpr
2448 var recv = v.expr(self.n_expr, null)
2450 for a in self.raw_arguments.as(not null) do
2451 args.add(v.expr(a, null))
2453 return v.compile_callsite(self.callsite.as(not null), args)
2457 redef class ASendReassignFormExpr
2460 var recv = v.expr(self.n_expr, null)
2462 for a in self.raw_arguments.as(not null) do
2463 args.add(v.expr(a, null))
2465 var value = v.expr(self.n_value, null)
2467 var left = v.compile_callsite(self.callsite.as(not null), args)
2470 var res = v.compile_callsite(self.reassign_callsite.as(not null), [left, value])
2474 v.compile_callsite(self.write_callsite.as(not null), args)
2478 redef class ASuperExpr
2481 var recv = v.frame.arguments.first
2483 for a in self.n_args.n_exprs do
2484 args.add(v.expr(a, null))
2487 var callsite = self.callsite
2488 if callsite != null then
2489 # Add additionnals arguments for the super init call
2490 if args.length == 1 then
2491 for i in [0..callsite.mproperty.intro.msignature.arity[ do
2492 args.add(v.frame.arguments[i+1])
2496 var res = v.compile_callsite(callsite, args)
2500 if args.length == 1 then
2501 args = v.frame.arguments
2504 # stantard call-next-method
2505 return v.supercall(v.frame.mpropdef.as(MMethodDef), recv.mtype.as(MClassType), args)
2509 redef class ANewExpr
2512 var mtype = self.mtype.as(MClassType)
2514 var ctype = mtype.ctype
2515 if ctype == "val*" then
2516 recv = v.init_instance(mtype)
2517 else if ctype == "void*" then
2518 recv = v.new_expr("NULL/*special!*/", mtype)
2520 debug("cannot new {mtype}")
2524 for a in self.n_args.n_exprs do
2525 args.add(v.expr(a, null))
2527 var res2 = v.compile_callsite(self.callsite.as(not null), args)
2528 if res2 != null then
2529 #self.debug("got {res2} from {mproperty}. drop {recv}")
2536 redef class AAttrExpr
2539 var recv = v.expr(self.n_expr, null)
2540 var mproperty = self.mproperty.as(not null)
2541 return v.read_attribute(mproperty, recv)
2545 redef class AAttrAssignExpr
2548 var recv = v.expr(self.n_expr, null)
2549 var i = v.expr(self.n_value, null)
2550 var mproperty = self.mproperty.as(not null)
2551 v.write_attribute(mproperty, recv, i)
2555 redef class AAttrReassignExpr
2558 var recv = v.expr(self.n_expr, null)
2559 var value = v.expr(self.n_value, null)
2560 var mproperty = self.mproperty.as(not null)
2561 var attr = v.read_attribute(mproperty, recv)
2562 var res = v.compile_callsite(self.reassign_callsite.as(not null), [attr, value])
2564 v.write_attribute(mproperty, recv, res)
2568 redef class AIssetAttrExpr
2571 var recv = v.expr(self.n_expr, null)
2572 var mproperty = self.mproperty.as(not null)
2573 return v.isset_attribute(mproperty, recv)
2577 redef class ADebugTypeExpr
2586 redef class Array[E]
2587 # Return a new `Array` with the elements only contened in self and not in `o
`
2588 fun -(o: Array[E]): Array[E] do
2589 var res = new Array[E]
2590 for e in self do if not o.has(e) then res.add(e)
2596 # All `MProperty` associated to all `MClassDef` of `mclass
`
2597 fun properties(mclass: MClass): Set[MProperty] do
2598 if not self.properties_cache.has_key(mclass) then
2599 var properties = new HashSet[MProperty]
2600 var parents = new Array[MClass]
2601 if self.flatten_mclass_hierarchy.has(mclass) then
2602 parents.add_all(mclass.in_hierarchy(self).direct_greaters)
2604 for parent in parents do
2605 properties.add_all(self.properties(parent))
2607 for mclassdef in mclass.mclassdefs do
2608 for mprop in mclassdef.intro_mproperties do
2609 properties.add(mprop)
2612 self.properties_cache[mclass] = properties
2614 return properties_cache[mclass]
2616 private var properties_cache: Map[MClass, Set[MProperty]] = new HashMap[MClass, Set[MProperty]]
2620 # Does this module use the legacy native interface?
2621 fun uses_legacy_ni: Bool is abstract
2623 # Write FFI results to file
2624 fun finalize_ffi(v: AbstractCompilerVisitor, modelbuilder: ModelBuilder) is abstract
2626 # Write nitni results to file
2627 fun finalize_nitni(v: AbstractCompilerVisitor) is abstract