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.
17 # Global compilation of a Nit program
19 # Techniques used are:
20 # * heterogeneous generics
24 module global_compiler
28 import auto_super_init
29 import rapid_type_analysis
31 redef class ToolContext
33 var opt_output
: OptionString = new OptionString("Output file", "-o", "--output")
36 var opt_no_cc
: OptionBool = new OptionBool("Do not invoke C compiler", "--no-cc")
39 var opt_hardening
: OptionBool = new OptionBool("Generate contracts in the C code against bugs in the compiler", "--hardening")
44 self.option_context
.add_option
(self.opt_output
, self.opt_no_cc
, self.opt_hardening
)
48 redef class ModelBuilder
49 # Entry point to performs a global compilation on the AST of a complete program.
50 # `mainmodule` is the main module of the program
51 # `runtime_type_analysis` is a already computer type analysis.
52 fun run_global_compiler
(mainmodule
: MModule, runtime_type_analysis
: RapidTypeAnalysis)
55 self.toolcontext
.info
("*** COMPILING TO C ***", 1)
57 var compiler
= new GlobalCompiler(mainmodule
, runtime_type_analysis
, self)
58 var v
= new GlobalCompilerVisitor(compiler
)
60 v
.add_decl
("#include <stdlib.h>")
61 v
.add_decl
("#include <stdio.h>")
62 v
.add_decl
("#include <string.h>")
64 # TODO: Better way to activate the GC
65 v
.add_decl
("#include <gc/gc.h>")
66 #v.add_decl("#define GC_MALLOC(x) calloc(1, (x))")
68 # Declaration of structures the live Nit types
69 # Each live type is generated as an independent C `struct' type.
70 # They only share a common first field `classid` used to implement the polymorphism.
71 # Usualy, all C variables that refers to a Nit object are typed on the abstract struct `val' that contains only the `classid` field.
73 v
.add_decl
("typedef struct \{int classid;\} val; /* general C type representing a Nit instance. */")
74 for t
in runtime_type_analysis
.live_types
do
75 compiler
.declare_runtimeclass
(v
, t
)
78 # Global variable used by the legacy native interface
80 v
.add_decl
("extern int glob_argc;")
81 v
.add_decl
("extern char **glob_argv;")
82 v
.add_decl
("extern val *glob_sys;")
84 # Class names (for the class_name and output_class_name methods)
86 v
.add_decl
("extern const char const * class_names[];")
87 v
.add
("const char const * class_names[] = \{")
88 for t
in runtime_type_analysis
.live_types
do
89 v
.add
("\"{t}\
", /* {compiler.classid(t)} */")
94 # Init instance code (allocate and init-arguments)
96 for t
in runtime_type_analysis
.live_types
do
97 if t
.ctype
== "val*" then
98 compiler
.generate_init_instance
(t
)
100 compiler
.generate_box_instance
(t
)
104 # The main function of the C
106 v
= new GlobalCompilerVisitor(compiler
)
107 v
.add_decl
("int glob_argc;")
108 v
.add_decl
("char **glob_argv;")
109 v
.add_decl
("val *glob_sys;")
110 v
.add_decl
("int main(int argc, char** argv) \{")
111 v
.add
("glob_argc = argc; glob_argv = argv;")
112 var main_type
= mainmodule
.sys_type
113 if main_type
== null then return # Nothing to compile
114 var glob_sys
= v
.init_instance
(main_type
)
115 v
.add
("glob_sys = {glob_sys};")
116 var main_init
= mainmodule
.try_get_primitive_method
("init", main_type
)
117 if main_init
!= null then
118 v
.send
(main_init
, [glob_sys
])
120 var main_method
= mainmodule
.try_get_primitive_method
("main", main_type
)
121 if main_method
!= null then
122 v
.send
(main_method
, [glob_sys
])
127 # Compile until all runtime_functions are visited
129 while not compiler
.todos
.is_empty
do
130 var m
= compiler
.todos
.shift
131 self.toolcontext
.info
("Compile {m} ({compiler.seen.length-compiler.todos.length}/{compiler.seen.length})", 3)
132 m
.compile_to_c
(compiler
)
134 self.toolcontext
.info
("Total methods to compile to C: {compiler.visitors.length}", 2)
137 self.toolcontext
.info
("*** END VISITING: {time1-time0} ***", 2)
138 write_and_make
(compiler
)
141 protected fun write_and_make
(compiler
: GlobalCompiler)
143 var mainmodule
= compiler
.mainmodule
145 # Generate the .h and .c files
146 # A single C file regroups many compiled rumtime functions
147 # 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
150 var outname
= self.toolcontext
.opt_output
.value
151 if outname
== null then
152 outname
= "{mainmodule.name}.bin"
155 var hfilename
= ".nit_compile/{mainmodule.name}.1.h"
156 var h
= new OFStream.open
(hfilename
)
157 for l
in compiler
.header
.decl_lines
do
163 var cfiles
= new Array[String]
165 var file
: nullable OFStream = null
170 for vis
in compiler
.visitors
do
171 count
+= vis
.lines
.length
172 if file
== null or count
> 10000 then
174 if file
!= null then file
.close
175 var cfilename
= ".nit_compile/{mainmodule.name}.{i}.c"
176 cfiles
.add
(cfilename
)
177 file
= new OFStream.open
(cfilename
)
178 file
.write
"#include \"{mainmodule.name}.1.h\
"\n"
179 count
= vis
.lines
.length
181 if vis
!= compiler
.header
then
182 for l
in vis
.decl_lines
do
187 for l
in vis
.lines
do
192 if file
!= null then file
.close
194 self.toolcontext
.info
("Total C source files to compile: {cfiles.length}", 2)
196 # Generate the Makefile
198 var makename
= ".nit_compile/{mainmodule.name}.mk"
199 var makefile
= new OFStream.open
(makename
)
201 makefile
.write
("CC = ccache cc\nCFLAGS = -g -O2\nLDFLAGS ?= \nLDLIBS ?= -lm -lgc\n\n")
202 makefile
.write
("all: {outname}\n\n")
204 var ofiles
= new Array[String]
205 # Compile each generated file
207 var o
= f
.strip_extension
(".c") + ".o"
208 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) -D NONITCNI -c -o {o} {f}\n\n")
211 # Compile each required extern body into a specific .o
212 for f
in compiler
.extern_bodies
do
214 var o
= ".nit_compile/{mainmodule.name}.{i}.o"
215 makefile
.write
("{o}: {f}\n\t$(CC) $(CFLAGS) -D NONITCNI -c -o {o} {f}\n\n")
219 makefile
.write
("{outname}: {ofiles.join(" ")}\n\t$(CC) $(LDFLAGS) -o {outname} {ofiles.join(" ")} $(LDLIBS)\n\n")
221 makefile
.write
("clean:\n\trm {ofiles.join(" ")} 2>/dev/null\n\n")
223 self.toolcontext
.info
("Generated makefile: {makename}", 2)
226 self.toolcontext
.info
("*** END COMPILING TO C: {time1-time0} ***", 2)
228 # Execute the Makefile
230 if self.toolcontext
.opt_no_cc
.value
then return
233 self.toolcontext
.info
("*** COMPILING C ***", 1)
234 self.toolcontext
.info
("make -B -f {makename} -j 4", 2)
237 if self.toolcontext
.verbose_level
>= 3 then
238 res
= sys
.system
("make -B -f {makename} -j 4 2>&1")
240 res
= sys
.system
("make -B -f {makename} -j 4 2>&1 >/dev/null")
243 toolcontext
.error
(null, "make failed! Error code: {res}.")
247 self.toolcontext
.info
("*** END COMPILING C: {time1-time0} ***", 2)
251 # Singleton that store the knowledge about the compilation process
253 # The main module of the program
254 var mainmodule
: MModule
256 # The result of the RTA (used to know live types and methods)
257 var runtime_type_analysis
: RapidTypeAnalysis
259 # The modeulbuilder used to know the model and the AST
260 var modelbuilder
: ModelBuilder
262 # Is hardening asked? (see --hardening)
263 fun hardening
: Bool do return self.modelbuilder
.toolcontext
.opt_hardening
.value
265 init(mainmodule
: MModule, runtime_type_analysis
: RapidTypeAnalysis, modelbuilder
: ModelBuilder)
267 self.mainmodule
= mainmodule
268 self.runtime_type_analysis
= runtime_type_analysis
269 self.modelbuilder
= modelbuilder
270 self.live_primitive_types
= new Array[MClassType]
271 for t
in runtime_type_analysis
.live_types
do
272 if t
.ctype
!= "val*" then
273 self.live_primitive_types
.add
(t
)
278 # Subset of runtime_type_analysis.live_types that contains only primitive types
279 # Used to implement the equal test
280 var live_primitive_types
: Array[MClassType]
282 # runtime_functions that need to be compiled
283 private var todos
: List[AbstractRuntimeFunction] = new List[AbstractRuntimeFunction]
285 # runtime_functions already seen (todo or done)
286 private var seen
: HashSet[AbstractRuntimeFunction] = new HashSet[AbstractRuntimeFunction]
287 fun todo
(m
: AbstractRuntimeFunction)
289 if seen
.has
(m
) then return
294 # Where global declaration are stored (the main .h)
296 # FIXME: should not be a vistor but just somewhere to store lines
297 # FIXME: should not have a global .h since it does not help recompilations
298 var header
: nullable GlobalCompilerVisitor writable = null
300 # The list of all associated visitors
301 # Used to generate .c files
302 # FIXME: should not be vistors but just somewhere to store lines
303 private var visitors
: List[GlobalCompilerVisitor] = new List[GlobalCompilerVisitor]
305 # List of additional .c files required to compile (native interface)
306 var extern_bodies
= new ArraySet[String]
308 # Return the C symbol associated to a live type runtime
309 # REQUIRE: self.runtime_type_analysis.live_types.has(mtype)
310 fun classid
(mtype
: MClassType): String
312 if self.classids
.has_key
(mtype
) then
313 return self.classids
[mtype
]
315 print
"No classid for {mtype}"
319 # Cache for classid (computed by declare_runtimeclass)
320 protected var classids
: HashMap[MClassType, String] = new HashMap[MClassType, String]
322 # Declare C structures and identifiers for a runtime class
323 fun declare_runtimeclass
(v
: GlobalCompilerVisitor, mtype
: MClassType)
325 assert self.runtime_type_analysis
.live_types
.has
(mtype
)
326 v
.add_decl
("/* runtime class {mtype} */")
327 var idnum
= classids
.length
328 var idname
= "ID_" + mtype
.c_name
329 self.classids
[mtype
] = idname
330 v
.add_decl
("#define {idname} {idnum} /* {mtype} */")
332 v
.add_decl
("struct {mtype.c_name} \{")
333 v
.add_decl
("int classid; /* must be {idname} */")
335 if mtype
.ctype
!= "val*" then
336 # Is the Nit type is native then the struct is a box with two fields:
337 # * the `classid` to be polymorph
338 # * the `value` that contains the native value.
339 v
.add_decl
("{mtype.ctype} value;")
342 # Collect all attributes and associate them a field in the structure.
343 # Note: we do not try to optimize the order and helps CC to optimize the client code.
344 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
) do
345 for p
in cd
.intro_mproperties
do
346 if not p
isa MAttribute then continue
347 var t
= p
.intro
.static_mtype
.as(not null)
348 t
= t
.anchor_to
(self.mainmodule
, mtype
)
349 v
.add_decl
("{t.ctype} {p.intro.c_name}; /* {p}: {t} */")
355 # Generate the init-instance of a live type (allocate + init-instance)
356 fun generate_init_instance
(mtype
: MClassType)
358 assert self.runtime_type_analysis
.live_types
.has
(mtype
)
359 assert mtype
.ctype
== "val*"
360 var v
= new GlobalCompilerVisitor(self)
362 self.header
.add_decl
("{mtype.ctype} NEW_{mtype.c_name}(void);")
363 v
.add_decl
("/* allocate {mtype} */")
364 v
.add_decl
("{mtype.ctype} NEW_{mtype.c_name}(void) \{")
365 var res
= v
.new_var
(mtype
)
367 v
.add
("{res} = GC_MALLOC(sizeof(struct {mtype.c_name}));")
368 v
.add
("{res}->classid = {self.classid(mtype)};")
370 for cd
in mtype
.collect_mclassdefs
(self.mainmodule
)
372 var n
= self.modelbuilder
.mclassdef2nclassdef
[cd
]
373 for npropdef
in n
.n_propdefs
do
374 if npropdef
isa AAttrPropdef then
375 npropdef
.init_expr
(v
, res
)
379 v
.add
("return {res};")
383 fun generate_box_instance
(mtype
: MClassType)
385 assert self.runtime_type_analysis
.live_types
.has
(mtype
)
386 assert mtype
.ctype
!= "val*"
387 var v
= new GlobalCompilerVisitor(self)
389 self.header
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype});")
390 v
.add_decl
("/* allocate {mtype} */")
391 v
.add_decl
("val* BOX_{mtype.c_name}({mtype.ctype} value) \{")
392 v
.add
("struct {mtype.c_name}*res = GC_MALLOC(sizeof(struct {mtype.c_name}));")
393 v
.add
("res->classid = {self.classid(mtype)};")
394 v
.add
("res->value = value;")
395 v
.add
("return (val*)res;")
400 # look for a needed .h and .c file for a given .nit source-file
401 # FIXME: bad API, parameter should be a MModule, not its source-file
402 fun add_extern
(file
: String)
404 file
= file
.strip_extension
(".nit")
405 var tryfile
= file
+ ".nit.h"
406 if tryfile
.file_exists
then
407 self.header
.add_decl
("#include \"{"..".join_path(tryfile)}\
"")
409 tryfile
= file
+ "_nit.h"
410 if tryfile
.file_exists
then
411 self.header
.add_decl
("#include \"{"..".join_path(tryfile)}\
"")
413 tryfile
= file
+ ".nit.c"
414 if tryfile
.file_exists
then
415 self.extern_bodies
.add
(tryfile
)
417 tryfile
= file
+ "_nit.c"
418 if tryfile
.file_exists
then
419 self.extern_bodies
.add
(tryfile
)
423 private var collect_types_cache
: HashMap[MType, Array[MClassType]] = new HashMap[MType, Array[MClassType]]
427 # Mangle a string to be a unique valid C identifier
428 fun to_cmangle
: String
431 var underscore
= false
433 if (c
>= 'a' and c
<= 'z') or (c
>='A' and c
<= 'Z') then
439 res
.append
('_'.ascii
.to_s
)
442 if c
>= '0' and c
<= '9' then
445 else if c
== '_' then
450 res
.append
(c
.ascii
.to_s
)
458 # Escape " \ ' and non printable characters for literal C strings or characters
459 fun escape_to_c
: String
465 else if c
== '\0' then
467 else if c
== '"' then
469 else if c == '\'' then
471 else if c == '\\
' then
473 else if c.ascii < 32 then
474 b.append("\\{c.ascii.to_base(8, false)}")
484 # Return the C type associated to a given Nit static type
490 # Return the name of the C structure associated to a Nit live type
491 # FIXME: move to GlobalCompiler so we can check that self is a live type
492 fun c_name: String is abstract
493 private var c_name_cache: nullable String
496 redef class MClassType
499 var res = self.c_name_cache
500 if res != null then return res
501 res = "{mclass.intro_mmodule.name.to_cmangle}__{mclass.name.to_cmangle}"
502 self.c_name_cache = res
506 redef fun ctype: String
508 if mclass.name == "Int" then
510 else if mclass.name == "Bool" then
512 else if mclass.name == "Char" then
514 else if mclass.name == "Float" then
516 else if mclass.name == "NativeString" then
518 else if mclass.name == "NativeArray" then
519 assert self isa MGenericType
520 return "{self.arguments.first.ctype}*"
521 else if mclass.kind == extern_kind then
529 redef class MGenericType
532 var res = self.c_name_cache
533 if res != null then return res
535 for t in self.arguments do
538 self.c_name_cache = res
543 redef class MParameterType
546 var res = self.c_name_cache
547 if res != null then return res
548 res = "FT{self.rank}"
549 self.c_name_cache = res
554 redef class MNullableType
557 var res = self.c_name_cache
558 if res != null then return res
559 res = "nullable_{self.mtype.c_name}"
560 self.c_name_cache = res
565 # A C function associated to a Nit method
566 # Because of customization, a given Nit method can be compiler more that once
567 abstract class AbstractRuntimeFunction
568 # The associated Nit method
569 var mmethoddef: MMethodDef
571 # The mangled c name of the runtime_function
572 # Subclasses should redefine `build_c_name` instead
575 var res = self.c_name_cache
576 if res != null then return res
577 res = self.build_c_name
578 self.c_name_cache = res
582 # Non cached version of `c_name`
583 protected fun build_c_name: String is abstract
585 private var c_name_cache: nullable String = null
587 # Implements a call of the runtime_function
588 # May inline the body or generate a C function call
589 fun call(v: GlobalCompilerVisitor, arguments: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
591 # Generate the code for the RuntimeFunction
592 # Warning: compile more than once compilation makes CC unhappy
593 fun compile_to_c(compiler: GlobalCompiler) is abstract
596 # A runtime function customized on a specific monomrph receiver type
597 private class CustomizedRuntimeFunction
598 super AbstractRuntimeFunction
600 # The considered reciever
601 # (usually is a live type but no strong guarantee)
604 init(mmethoddef: MMethodDef, recv: MClassType)
610 redef fun build_c_name: String
612 var res = self.c_name_cache
613 if res != null then return res
614 if self.mmethoddef.mclassdef.bound_mtype == self.recv then
615 res = self.mmethoddef.c_name
617 res = "{mmethoddef.c_name}__{recv.c_name}"
619 self.c_name_cache = res
624 # used in the compiler worklist
626 if not o isa CustomizedRuntimeFunction then return false
627 if self.mmethoddef != o.mmethoddef then return false
628 if self.recv != o.recv then return false
633 # used in the compiler work-list
635 var res = self.mmethoddef.hash + self.recv.hash
641 if self.mmethoddef.mclassdef.bound_mtype == self.recv then
642 return self.mmethoddef.to_s
644 return "{self.mmethoddef}@{self.recv}"
648 # compile the code customized for the reciever
649 redef fun compile_to_c(compiler)
652 var mmethoddef = self.mmethoddef
653 if not recv.is_subtype(compiler.mainmodule, null, mmethoddef.mclassdef.bound_mtype) then
654 print("problem: why do we compile {self} for {recv}?")
658 var v = new GlobalCompilerVisitor(compiler)
659 var selfvar = new RuntimeVariable("self", recv, recv)
660 if compiler.runtime_type_analysis.live_types.has(recv) then
661 selfvar.is_exact = true
663 var arguments = new Array[RuntimeVariable]
664 var frame = new Frame(v, mmethoddef, recv, arguments)
668 var comment = new Buffer
669 var ret = mmethoddef.msignature.return_mtype
671 ret = v.resolve_for(ret, selfvar)
672 sig.append("{ret.ctype} ")
673 else if mmethoddef.mproperty.is_new then
675 sig.append("{ret.ctype} ")
679 sig.append(self.c_name)
680 sig.append("({recv.ctype} self")
681 comment.append("(self: {recv}")
682 arguments.add(selfvar)
683 for i in [0..mmethoddef.msignature.arity[ do
684 var mtype = mmethoddef.msignature.mparameters[i].mtype
685 if i == mmethoddef.msignature.vararg_rank then
686 mtype = v.get_class("Array").get_mtype([mtype])
688 mtype = v.resolve_for(mtype, selfvar)
689 comment.append(", {mtype}")
690 sig.append(", {mtype.ctype} p{i}")
691 var argvar = new RuntimeVariable("p{i}", mtype, mtype)
692 arguments.add(argvar)
697 comment.append(": {ret}")
699 compiler.header.add_decl("{sig};")
701 v.add_decl("/* method {self} for {comment} */")
702 v.add_decl("{sig} \{")
703 #v.add("printf(\"method {self} for {comment}\\n\");")
705 frame.returnvar = v.new_var(ret)
707 frame.returnlabel = v.get_name("RET_LABEL")
709 mmethoddef.compile_inside_to_c(v, arguments)
711 v.add("{frame.returnlabel.as(not null)}:;")
713 v.add("return {frame.returnvar.as(not null)};")
718 redef fun call(v: GlobalCompilerVisitor, arguments: Array[RuntimeVariable]): nullable RuntimeVariable
720 var ret = self.mmethoddef.msignature.return_mtype
721 if self.mmethoddef.mproperty.is_new then
725 ret = v.resolve_for(ret, arguments.first)
727 if self.mmethoddef.can_inline(v) then
728 var frame = new Frame(v, self.mmethoddef, self.recv, arguments)
729 frame.returnlabel = v.get_name("RET_LABEL")
731 frame.returnvar = v.new_var(ret)
733 var old_frame = v.frame
735 v.add("\{ /* Inline {self} ({arguments.join(",")}) */")
736 self.mmethoddef.compile_inside_to_c(v, arguments)
737 v.add("{frame.returnlabel.as(not null)}:(void)0;")
740 return frame.returnvar
742 v.adapt_signature(self.mmethoddef, arguments)
743 v.compiler.todo(self)
745 v.add("{self.c_name}({arguments.join(",")});")
748 var res = v.new_var(ret)
749 v.add("{res} = {self.c_name}({arguments.join(",")});")
755 # A runtime variable hold a runtime value in C.
756 # Runtime variables are associated to Nit local variables and intermediate results in Nit expressions.
758 # 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.
759 class RuntimeVariable
760 # The name of the variable in the C code
763 # The static type of the variable (as declard in C)
766 # The current casted type of the variable (as known in Nit)
767 var mcasttype: MType writable
769 # If the variable exaclty a mcasttype?
770 # false (usual value) means that the variable is a mcasttype or a subtype.
771 var is_exact: Bool writable = false
773 init(name: String, mtype: MType, mcasttype: MType)
777 self.mcasttype = mcasttype
778 assert not mtype.need_anchor
779 assert not mcasttype.need_anchor
782 redef fun to_s do return name
787 if self.is_exact then
793 if self.mtype == self.mcasttype then
794 type_str = "{mtype}{exact_str}"
796 type_str = "{mtype}({mcasttype}{exact_str})"
798 return "<{name}:{type_str}>"
802 # A visitor on the AST of property definition that generate the C code.
803 # Because of inlining, a visitor can visit more than one property.
804 class GlobalCompilerVisitor
805 # The associated compiler
806 var compiler: GlobalCompiler
808 init(compiler: GlobalCompiler)
810 self.compiler = compiler
811 compiler.visitors.add(self)
814 # Alias for self.compiler.mainmodule.object_type
815 fun object_type: MClassType do return self.compiler.mainmodule.object_type
817 # Alias for self.compiler.mainmodule.bool_type
818 fun bool_type: MClassType do return self.compiler.mainmodule.bool_type
820 # Force to get the primitive class named `name' or abort
821 fun get_class
(name
: String): MClass
823 return self.compiler
.mainmodule
.get_primitive_class
(name
)
826 # Force to get the primitive property named `name' in the instance `recv' or abort
827 fun get_property
(name
: String, recv
: MType): MMethod
829 return self.compiler
.modelbuilder
.force_get_primitive_method
(self.current_node
.as(not null), name
, recv
, self.compiler
.mainmodule
)
833 var frame
: nullable Frame writable
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 #debug("anchor {mtype} to {self.reciever.as(not null)}:{self.reciever.mtype}")
840 return mtype
.anchor_to
(self.compiler
.mainmodule
, self.frame
.receiver
)
843 # Add a line in the main part of the generated C
850 # (used for local or global declaration)
851 fun add_decl
(s
: String)
853 self.decl_lines
.add
(s
)
856 private var lines
: List[String] = new List[String]
857 private var decl_lines
: List[String] = new List[String]
859 # The current visited AST node
860 var current_node
: nullable AExpr = null
862 # Compile an expression an return its result
863 # `mtype` is the expected return type, pass null if no specific type is expected.
864 fun expr
(nexpr
: AExpr, mtype
: nullable MType): RuntimeVariable
866 var old
= self.current_node
867 self.current_node
= nexpr
868 var res
= nexpr
.expr
(self).as(not null)
869 if mtype
!= null then
870 mtype
= self.anchor
(mtype
)
871 res
= self.autobox
(res
, mtype
)
873 self.current_node
= old
877 # Unsafely cast a value to a new type
878 # ie the result share the same C variable but my have a different mcasttype
879 # NOTE: if the adaptation is useless then `value' is returned as it.
880 # ENSURE: return.name == value.name
881 fun autoadapt
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable
883 mtype
= self.anchor
(mtype
)
884 var valmtype
= value
.mcasttype
885 if valmtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
889 if valmtype
isa MNullableType and valmtype
.mtype
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
890 var res
= new RuntimeVariable(value
.name
, valmtype
, valmtype
.mtype
)
893 var res
= new RuntimeVariable(value
.name
, valmtype
, mtype
)
898 # Box or unbox a value to another type iff a C type conversion is needed
899 # ENSURE: result.mtype.ctype == mtype.ctype
900 fun autobox
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable
902 if value
.mtype
.ctype
== mtype
.ctype
then
904 else if value
.mtype
.ctype
== "val*" then
905 return self.new_expr
("((struct {mtype.c_name}*){value})->value; /* autounbox from {value.mtype} to {mtype} */", mtype
)
906 else if mtype
.ctype
== "val*" then
907 var valtype
= value
.mtype
.as(MClassType)
908 var res
= self.new_var
(mtype
)
909 if not compiler
.runtime_type_analysis
.live_types
.has
(valtype
) then
910 self.add
("/*no autobox from {value.mtype} to {mtype}: {value.mtype} is not live! */")
911 self.add
("printf(\"Dead code executed
!\\n\
"); exit(1);")
914 self.add
("{res} = BOX_{valtype.c_name}({value}); /* autobox from {value.mtype} to {mtype} */")
917 # Bad things will appen!
918 var res
= self.new_var
(mtype
)
919 self.add
("/* {res} left unintialized (cannot convert {value.mtype} to {mtype}) */")
920 self.add
("printf(\"Cast error
: Cannot cast
%s to
%s
.\\n\
", \"{value.mtype}\
", \"{mtype}\
"); exit(1);")
925 # Correctly assign a left and a right value
926 # Boxing and unboxing is performed if required
927 fun assign
(left
, right
: RuntimeVariable)
929 right
= self.autobox
(right
, left
.mtype
)
930 self.add
("{left} = {right};")
934 # Alias for `self.expr(nexpr, self.bool_type)'
935 fun expr_bool
(nexpr
: AExpr): RuntimeVariable
937 return expr
(nexpr
, bool_type
)
940 # Compile a statement (if any)
941 fun stmt
(nexpr
: nullable AExpr)
943 if nexpr
== null then return
944 var old
= self.current_node
945 self.current_node
= nexpr
947 self.current_node
= old
950 # Safely show a debug message on the current node and repeat the message in the C code as a comment
951 fun debug
(message
: String)
953 var node
= self.current_node
959 self.add
("/* DEBUG: {message} */")
962 # Return a new uninitialized local runtime_variable
963 fun new_var
(mtype
: MType): RuntimeVariable
965 mtype
= self.anchor
(mtype
)
966 var name
= self.get_name
("var")
967 var res
= new RuntimeVariable(name
, mtype
, mtype
)
968 self.add_decl
("{mtype.ctype} {name} /* : {mtype} */;")
972 # Return a new local runtime_variable initialized with the C expression `cexpr'.
973 fun new_expr
(cexpr
: String, mtype
: MType): RuntimeVariable
975 var res
= new_var
(mtype
)
976 self.add
("{res} = {cexpr};")
980 # Return the local runtime_variable associated to a Nit local variable
981 fun variable
(variable
: Variable): RuntimeVariable
983 if self.variables
.has_key
(variable
) then
984 return self.variables
[variable
]
986 var name
= self.get_name
("var_{variable.name}")
987 var mtype
= variable
.declared_type
.as(not null)
988 mtype
= self.anchor
(mtype
)
989 var res
= new RuntimeVariable(name
, mtype
, mtype
)
990 self.add_decl
("{mtype.ctype} {name} /* var {variable}: {mtype} */;")
991 self.variables
[variable
] = res
996 private var variables
: HashMap[Variable, RuntimeVariable] = new HashMap[Variable, RuntimeVariable]
998 # Return an unique and stable identifier associated with an escapemark
999 fun escapemark_name
(e
: nullable EscapeMark): String
1002 if escapemark_names
.has_key
(e
) then return escapemark_names
[e
]
1004 if name
== null then name
= "label"
1005 name
= get_name
(name
)
1006 escapemark_names
[e
] = name
1010 private var escapemark_names
= new HashMap[EscapeMark, String]
1012 # Return a new name based on `s' and unique in the visitor
1013 fun get_name
(s
: String): String
1015 if not self.names
.has
(s
) then
1019 var i
= self.last
+ 1
1022 if not self.names
.has
(s2
) then
1031 private var last
: Int = 0
1033 private var names
: HashSet[String] = new HashSet[String]
1035 # Generate a return with the value `s'
1036 fun ret
(s
: RuntimeVariable)
1038 self.assign
(self.frame
.returnvar
.as(not null), s
)
1039 self.add
("goto {self.frame.returnlabel.as(not null)};")
1042 # The runtime types that are acceptable for a given receiver.
1043 fun collect_types
(recv
: RuntimeVariable): Array[MClassType]
1045 var mtype
= recv
.mcasttype
1046 if recv
.is_exact
then
1047 assert mtype
isa MClassType
1048 assert self.compiler
.runtime_type_analysis
.live_types
.has
(mtype
)
1052 var cache
= self.compiler
.collect_types_cache
1053 if cache
.has_key
(mtype
) then
1056 var types
= new Array[MClassType]
1057 var mainmodule
= self.compiler
.mainmodule
1058 for t
in self.compiler
.runtime_type_analysis
.live_types
do
1059 if not t
.is_subtype
(mainmodule
, null, mtype
) then continue
1062 cache
[mtype
] = types
1066 fun resolve_for
(mtype
: MType, recv
: RuntimeVariable): MType
1068 if not mtype
.need_anchor
then return mtype
1069 #debug("resolve for {mtype} to {recv}:{recv.mcasttype}(declared as {recv.mtype}) (in {self.reciever.to_s}:{self.reciever.mtype})")
1070 var res
= mtype
.resolve_for
(recv
.mcasttype
, self.frame
.receiver
, self.compiler
.mainmodule
, true)
1074 # Generate a polymorphic send for the method `m' and the arguments `args'
1075 fun send
(m
: MMethod, args
: Array[RuntimeVariable]): nullable RuntimeVariable
1077 var types
= self.collect_types
(args
.first
)
1079 var res
: nullable RuntimeVariable
1080 var ret
= m
.intro
.msignature
.return_mtype
1082 ret
= args
.first
.mtype
1083 res
= self.new_var
(ret
)
1084 else if ret
== null then
1087 ret
= self.resolve_for
(ret
, args
.first
)
1088 res
= self.new_var
(ret
)
1091 if types
.is_empty
then
1092 self.add
("/*BUG: no live types for {args.first.inspect} . {m}*/")
1095 self.add
("/* send {m} on {args.first.inspect} */")
1096 if args
.first
.mtype
.ctype
!= "val*" then
1097 var propdefs
= m
.lookup_definitions
(self.compiler
.mainmodule
, args
.first
.mtype
)
1098 if propdefs
.length
== 0 then
1099 self.add
("/* skip, no method {m} */")
1102 assert propdefs
.length
== 1
1103 var propdef
= propdefs
.first
1104 var res2
= self.call
(propdef
, args
.first
.mtype
.as(MClassType), args
)
1105 if res
!= null then self.assign
(res
, res2
.as(not null))
1108 if args
.first
.mcasttype
isa MNullableType then
1109 # The reciever is potentially null, so we have to 3 cases: ==, != or NullPointerException
1110 self.add
("if ({args.first} == NULL) \{ /* Special null case */")
1111 if m
.name
== "==" then
1113 if args
[1].mcasttype
isa MNullableType then
1114 self.add
("{res} = ({args[1]} == NULL);")
1115 else if args
[1].mcasttype
isa MNullType then
1116 self.add
("{res} = 1; /* is null */")
1118 self.add
("{res} = 0; /* {args[1].inspect} cannot be null */")
1120 else if m
.name
== "!=" then
1122 if args
[1].mcasttype
isa MNullableType then
1123 self.add
("{res} = ({args[1]} != NULL);")
1124 else if args
[1].mcasttype
isa MNullType then
1125 self.add
("{res} = 0; /* is null */")
1127 self.add
("{res} = 1; /* {args[1].inspect} cannot be null */")
1130 self.add_abort
("Reciever is null")
1134 self.add
("switch({args.first}->classid) \{")
1135 var last
= types
.last
1136 var defaultpropdef
: nullable MMethodDef = null
1138 var propdefs
= m
.lookup_definitions
(self.compiler
.mainmodule
, t
)
1139 if propdefs
.length
== 0 then
1140 self.add
("/* skip {t}, no method {m} */")
1143 if propdefs
.length
> 1 then
1144 self.debug
("NOT YET IMPLEMENTED conflict for {t}.{m}: {propdefs.join(" ")}. choose the first")
1146 var propdef
= propdefs
.first
1147 if propdef
.mclassdef
.mclass
.name
== "Object" and t
.ctype
== "val*" then
1148 defaultpropdef
= propdef
1151 if not self.compiler
.hardening
and t
== last
and defaultpropdef
== null then
1152 self.add
("default: /* test {t} */")
1154 self.add
("case {self.compiler.classid(t)}: /* test {t} */")
1156 var res2
= self.call
(propdef
, t
, args
)
1157 if res
!= null then self.assign
(res
, res2
.as(not null))
1160 if defaultpropdef
!= null then
1161 self.add
("default: /* default is Object */")
1162 var res2
= self.call
(defaultpropdef
, defaultpropdef
.mclassdef
.bound_mtype
, args
)
1163 if res
!= null then self.assign
(res
, res2
.as(not null))
1164 else if self.compiler
.hardening
then
1165 self.add
("default: /* bug */")
1166 self.bugtype
(args
.first
)
1172 # Generate a monomorphic send for the method `m', the type `t' and the arguments `args'
1173 fun monomorphic_send
(m
: MMethod, t
: MType, args
: Array[RuntimeVariable]): nullable RuntimeVariable
1175 assert t
isa MClassType
1176 var propdefs
= m
.lookup_definitions
(self.compiler
.mainmodule
, t
)
1177 if propdefs
.length
== 0 then
1180 if propdefs
.length
> 1 then
1181 self.debug
("NOT YET IMPLEMENTED conflict for {t}.{m}: {propdefs.join(" ")}. choose the first")
1183 var propdef
= propdefs
.first
1184 return self.call
(propdef
, t
, args
)
1187 fun check_valid_reciever
(recvtype
: MClassType)
1189 if self.compiler
.runtime_type_analysis
.live_types
.has
(recvtype
) or recvtype
.mclass
.name
== "Object" then return
1190 print
"{recvtype} is not a live type"
1194 # Generate a static call on a method definition
1195 fun call
(m
: MMethodDef, recvtype
: MClassType, args
: Array[RuntimeVariable]): nullable RuntimeVariable
1197 check_valid_reciever
(recvtype
)
1198 #debug("call {m} on {recvtype} on {args.first}:{args.first.mtype}")
1199 if m
.mclassdef
.mclass
.name
== "Object" and recvtype
.ctype
== "val*" then
1200 recvtype
= m
.mclassdef
.bound_mtype
1202 var recv
= self.autobox
(args
.first
, recvtype
)
1203 recv
= self.autoadapt
(recv
, recvtype
)
1205 var vararg_rank
= m
.msignature
.vararg_rank
1206 if vararg_rank
>= 0 then
1207 assert args
.length
>= m
.msignature
.arity
+ 1 # because of self
1209 args
= new Array[RuntimeVariable]
1211 args
.add
(rawargs
.first
) # recv
1213 for i
in [0..vararg_rank
[ do
1214 args
.add
(rawargs
[i
+1])
1217 var vararg_lastrank
= vararg_rank
+ rawargs
.length-1-m
.msignature
.arity
1218 var vararg
= new Array[RuntimeVariable]
1219 for i
in [vararg_rank
..vararg_lastrank
] do
1220 vararg
.add
(rawargs
[i
+1])
1222 # FIXME: its it to late to determine the vararg type, this should have been done during a previous analysis
1223 var elttype
= m
.msignature
.mparameters
[vararg_rank
].mtype
1224 elttype
= self.resolve_for
(elttype
, recv
)
1225 args
.add
(self.array_instance
(vararg
, elttype
))
1227 for i
in [vararg_lastrank
+1..rawargs
.length-1
[ do
1228 args
.add
(rawargs
[i
+1])
1233 if args
.length
!= m
.msignature
.arity
+ 1 then # because of self
1234 add
("printf(\"NOT YET IMPLEMENTED: Invalid arity
for {m}. {args.length} arguments given
.\\n\
"); exit(1);")
1235 debug
("NOT YET IMPLEMENTED: Invalid arity for {m}. {args.length} arguments given.")
1240 var rm
= new CustomizedRuntimeFunction(m
, recvtype
)
1241 return rm
.call
(self, args
)
1244 fun adapt_signature
(m
: MMethodDef, args
: Array[RuntimeVariable])
1246 var recv
= args
.first
1247 for i
in [0..m
.msignature
.arity
[ do
1248 var t
= m
.msignature
.mparameters
[i
].mtype
1249 if i
== m
.msignature
.vararg_rank
then
1252 t
= self.resolve_for
(t
, recv
)
1253 args
[i
+1] = self.autobox
(args
[i
+1], t
)
1257 fun bugtype
(recv
: RuntimeVariable)
1259 if recv
.mtype
.ctype
!= "val*" then return
1260 self.add
("fprintf(stderr, \"BTD BUG: Dynamic type is %s
, static
type is %s\\n\
", class_names[{recv}->classid], \"{recv.mcasttype}\
");")
1263 # Generate a polymorphic attribute read
1264 fun read_attribute
(a
: MAttribute, recv
: RuntimeVariable): RuntimeVariable
1266 var types
= self.collect_types
(recv
)
1268 var ret
= a
.intro
.static_mtype
.as(not null)
1269 ret
= self.resolve_for
(ret
, recv
)
1270 var res
= self.new_var
(ret
)
1272 if types
.is_empty
then
1273 self.add
("/*BUG: no live types for {recv.inspect} . {a}*/")
1276 self.add
("/* read {a} on {recv.inspect} */")
1277 self.add
("switch({recv}->classid) \{")
1278 var last
= types
.last
1280 if not self.compiler
.hardening
and t
== last
then
1281 self.add
("default: /*{self.compiler.classid(t)}*/")
1283 self.add
("case {self.compiler.classid(t)}:")
1285 var recv2
= self.autoadapt
(recv
, t
)
1286 var ta
= a
.intro
.static_mtype
.as(not null)
1287 ta
= self.resolve_for
(ta
, recv2
)
1288 var res2
= self.new_expr
("((struct {t.c_name}*){recv})->{a.intro.c_name}", ta
)
1289 if not ta
isa MNullableType then
1290 if ta
.ctype
== "val*" then
1291 self.add
("if ({res2} == NULL) \{")
1292 self.add_abort
("Uninitialized attribute {a.name}")
1295 self.add
("/*NOTYET isset on primitive attributes*/")
1298 self.assign
(res
, res2
)
1301 if self.compiler
.hardening
then
1302 self.add
("default: /* Bug */")
1310 # Generate a polymorphic attribute write
1311 fun write_attribute
(a
: MAttribute, recv
: RuntimeVariable, value
: RuntimeVariable)
1313 var types
= self.collect_types
(recv
)
1315 if types
.is_empty
then
1316 self.add
("/*BUG: no live types for {recv.inspect} . {a}*/")
1319 self.add
("/* write {a} on {recv.inspect} */")
1320 self.add
("switch({recv}->classid) \{")
1321 var last
= types
.last
1323 if not self.compiler
.hardening
and t
== last
then
1324 self.add
("default: /*{self.compiler.classid(t)}*/")
1326 self.add
("case {self.compiler.classid(t)}:")
1328 var recv2
= self.autoadapt
(recv
, t
)
1329 var ta
= a
.intro
.static_mtype
.as(not null)
1330 ta
= self.resolve_for
(ta
, recv2
)
1331 self.add
("((struct {t.c_name}*){recv})->{a.intro.c_name} = {self.autobox(value, ta)};")
1334 if self.compiler
.hardening
then
1335 self.add
("default: /* Bug*/")
1341 # Generate a alloc-instance + init-attributes
1342 fun init_instance
(mtype
: MClassType): RuntimeVariable
1344 mtype
= self.anchor
(mtype
).as(MClassType)
1345 if not self.compiler
.runtime_type_analysis
.live_types
.has
(mtype
) then
1346 debug
"problem: {mtype} was detected dead"
1348 var res
= self.new_expr
("NEW_{mtype.c_name}()", mtype
)
1353 # Generate a polymorphic subtype test
1354 fun type_test
(value
: RuntimeVariable, mtype
: MType): RuntimeVariable
1356 mtype
= self.anchor
(mtype
)
1357 var types
= self.collect_types
(value
)
1359 var res
= self.new_var
(bool_type
)
1361 self.add
("/* isa {mtype} on {value.inspect} */")
1362 if value
.mcasttype
isa MNullableType then
1363 self.add
("if ({value} == NULL) \{")
1364 if mtype
isa MNullableType then
1365 self.add
("{res} = 1; /* isa {mtype} */")
1367 self.add
("{res} = 0; /* not isa {mtype} */")
1369 self.add
("\} else ")
1371 self.add
("switch({value}->classid) \{")
1373 if t
.is_subtype
(self.compiler
.mainmodule
, null, mtype
) then
1374 self.add
("case {self.compiler.classid(t)}: /* {t} */")
1377 self.add
("{res} = 1;")
1379 self.add
("default:")
1380 self.add
("{res} = 0;")
1386 # Generate the code required to dynamically check if 2 objects share the same runtime type
1387 fun is_same_type_test
(value1
, value2
: RuntimeVariable): RuntimeVariable
1389 var res
= self.new_var
(bool_type
)
1390 if value2
.mtype
.ctype
== "val*" then
1391 if value1
.mtype
.ctype
== "val*" then
1392 self.add
"{res} = {value1}->classid == {value2}->classid;"
1394 self.add
"{res} = {self.compiler.classid(value1.mtype.as(MClassType))} == {value2}->classid;"
1397 if value1
.mtype
.ctype
== "val*" then
1398 self.add
"{res} = {value1}->classid == {self.compiler.classid(value2.mtype.as(MClassType))};"
1399 else if value1
.mcasttype
== value2
.mcasttype
then
1400 self.add
"{res} = 1;"
1402 self.add
"{res} = 0;"
1408 # Return a "const char*" variable associated to the classname of the dynamic type of an object
1409 # NOTE: we do not return a RuntimeVariable "NativeString" as the class may not exist in the module/program
1410 fun class_name_string
(value
: RuntimeVariable): String
1412 var res
= self.get_name
("var_class_name")
1413 self.add_decl
("const char* {res};")
1414 if value
.mtype
.ctype
== "val*" then
1415 self.add
"{res} = class_names[{value}->classid];"
1417 self.add
"{res} = class_names[{self.compiler.classid(value.mtype.as(MClassType))}];"
1422 # Generate a Nit "is" for two runtime_variables
1423 fun equal_test
(value1
, value2
: RuntimeVariable): RuntimeVariable
1425 var res
= self.new_var
(bool_type
)
1426 if value2
.mtype
.ctype
!= "val*" and value1
.mtype
.ctype
== "val*" then
1431 if value1
.mtype
.ctype
!= "val*" then
1432 if value2
.mtype
.ctype
== value1
.mtype
.ctype
then
1433 self.add
("{res} = {value1} == {value2};")
1434 else if value2
.mtype
.ctype
!= "val*" then
1435 self.add
("{res} = 0; /* incompatible types {value1.mtype} vs. {value2.mtype}*/")
1437 var mtype1
= value1
.mtype
.as(MClassType)
1438 self.add
("{res} = ({value2} != NULL) && ({value2}->classid == {self.compiler.classid(mtype1)});")
1439 self.add
("if ({res}) \{")
1440 self.add
("{res} = ({self.autobox(value2, value1.mtype)} == {value1});")
1444 var s
= new Array[String]
1445 for t
in self.compiler
.live_primitive_types
do
1446 if not t
.is_subtype
(self.compiler
.mainmodule
, null, value1
.mcasttype
) then continue
1447 if not t
.is_subtype
(self.compiler
.mainmodule
, null, value2
.mcasttype
) then continue
1448 s
.add
"({value1}->classid == {self.compiler.classid(t)} && ((struct {t.c_name}*){value1})->value == ((struct {t.c_name}*){value2})->value)"
1451 self.add
("{res} = {value1} == {value2};")
1453 self.add
("{res} = {value1} == {value2} || ({value1} != NULL && {value2} != NULL && {value1}->classid == {value2}->classid && ({s.join(" || ")}));")
1459 # Generate a check-init-instance
1460 # TODO: is an empty stub currently
1461 fun check_init_instance
(recv
: RuntimeVariable)
1465 # Generate an integer value
1466 fun int_instance
(value
: Int): RuntimeVariable
1468 var res
= self.new_var
(self.get_class
("Int").mclass_type
)
1469 self.add
("{res} = {value};")
1473 # Generate an array value
1474 fun array_instance
(array
: Array[RuntimeVariable], elttype
: MType): RuntimeVariable
1476 elttype
= self.anchor
(elttype
)
1477 var arraytype
= self.get_class
("Array").get_mtype
([elttype
])
1478 var res
= self.init_instance
(arraytype
)
1479 self.add
("\{ /* {res} = array_instance Array[{elttype}] */")
1480 var nat
= self.new_var
(self.get_class
("NativeArray").get_mtype
([elttype
]))
1482 self.add
("{nat} = GC_MALLOC({array.length} * sizeof({elttype.ctype}));")
1483 for i
in [0..array
.length
[ do
1484 var r
= self.autobox
(array
[i
], elttype
)
1485 self.add
("{nat}[{i}] = {r};")
1487 var length
= self.int_instance
(array
.length
)
1488 self.send
(self.get_property
("with_native", arraytype
), [res
, nat
, length
])
1489 self.check_init_instance
(res
)
1494 # Generate a string value
1495 fun string_instance
(string
: String): RuntimeVariable
1497 var mtype
= self.get_class
("String").mclass_type
1498 var name
= self.get_name
("varonce")
1499 self.add_decl
("static {mtype.ctype} {name};")
1500 var res
= self.new_var
(mtype
)
1501 self.add
("if ({name}) \{")
1502 self.add
("{res} = {name};")
1503 self.add
("\} else \{")
1504 var nat
= self.new_var
(self.get_class
("NativeString").mclass_type
)
1505 self.add
("{nat} = \"{string.escape_to_c}\
";")
1506 var res2
= self.init_instance
(mtype
)
1507 self.add
("{res} = {res2};")
1508 var length
= self.int_instance
(string
.length
)
1509 self.send
(self.get_property
("with_native", mtype
), [res
, nat
, length
])
1510 self.check_init_instance
(res
)
1511 self.add
("{name} = {res};")
1516 # Generate generic abort
1517 # used by aborts, asserts, casts, etc.
1518 fun add_abort
(message
: String)
1520 if self.current_node
!= null and self.current_node
.location
.file
!= null then
1521 self.add
("fprintf(stderr, \"Runtime error
: %s
(%s
:%d
)\\n\
", \"{message.escape_to_c}\
", \"{self.current_node.location.file.filename.escape_to_c}\
", {current_node.location.line_start});")
1523 self.add
("fprintf(stderr, \"Runtime error
: %s\\n\
", \"{message.escape_to_c}\
");")
1525 self.add
("exit(1);")
1529 # A frame correspond to a visited property in a GlobalCompilerVisitor
1531 # The associated visitor
1533 var visitor
: GlobalCompilerVisitor
1535 # The executed property.
1536 # A Method in case of a call, an attribute in case of a default initialization.
1537 var mpropdef
: MPropDef
1539 # The static type of the receiver
1540 var receiver
: MClassType
1542 # Arguments of the method (the first is the receiver)
1543 var arguments
: Array[RuntimeVariable]
1545 # The runtime_variable associated to the return (in a function)
1546 var returnvar
: nullable RuntimeVariable writable = null
1548 # The label at the end of the property
1549 var returnlabel
: nullable String writable = null
1552 redef class MPropDef
1553 private var c_name_cache
: nullable String
1555 # The mangled name associated to the property
1558 var res
= self.c_name_cache
1559 if res
!= null then return res
1560 res
= "{self.mclassdef.mmodule.name.to_cmangle}__{self.mclassdef.mclass.name.to_cmangle}__{self.mproperty.name.to_cmangle}"
1561 self.c_name_cache
= res
1566 redef class MMethodDef
1567 # Can the body be inlined?
1568 fun can_inline
(v
: GlobalCompilerVisitor): Bool
1570 var modelbuilder
= v
.compiler
.modelbuilder
1571 if modelbuilder
.mpropdef2npropdef
.has_key
(self) then
1572 var npropdef
= modelbuilder
.mpropdef2npropdef
[self]
1573 return npropdef
.can_inline
1574 else if self.mproperty
.name
== "init" then
1575 # Automatic free init is always inlined since it is empty or contains only attribtes assigments
1582 # Inline the body in another visitor
1583 fun compile_inside_to_c
(v
: GlobalCompilerVisitor, arguments
: Array[RuntimeVariable]): nullable RuntimeVariable
1585 var modelbuilder
= v
.compiler
.modelbuilder
1586 if modelbuilder
.mpropdef2npropdef
.has_key
(self) then
1587 var npropdef
= modelbuilder
.mpropdef2npropdef
[self]
1588 npropdef
.compile_to_c
(v
, self, arguments
)
1589 else if self.mproperty
.name
== "init" then
1590 var nclassdef
= modelbuilder
.mclassdef2nclassdef
[self.mclassdef
]
1591 nclassdef
.compile_to_c
(v
, self, arguments
)
1599 redef class APropdef
1600 fun compile_to_c
(v
: GlobalCompilerVisitor, mpropdef
: MMethodDef, arguments
: Array[RuntimeVariable])
1602 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at
{location.to_s}\\n\
");")
1603 debug
("Not yet implemented")
1606 fun can_inline
: Bool do return true
1609 redef class AConcreteMethPropdef
1610 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1612 for i
in [0..mpropdef
.msignature
.arity
[ do
1613 var variable
= self.n_signature
.n_params
[i
].variable
.as(not null)
1614 v
.assign
(v
.variable
(variable
), arguments
[i
+1])
1616 # Call the implicit super-init
1617 var auto_super_inits
= self.auto_super_inits
1618 if auto_super_inits
!= null then
1619 var selfarg
= [arguments
.first
]
1620 for auto_super_init
in auto_super_inits
do
1621 if auto_super_init
.intro
.msignature
.arity
== 0 then
1622 v
.send
(auto_super_init
, selfarg
)
1624 v
.send
(auto_super_init
, arguments
)
1629 v
.stmt
(self.n_block
)
1632 redef fun can_inline
1634 if self.auto_super_inits
!= null then return false
1635 var nblock
= self.n_block
1636 if nblock
== null then return true
1637 if (mpropdef
.mproperty
.name
== "==" or mpropdef
.mproperty
.name
== "!=") and mpropdef
.mclassdef
.mclass
.name
== "Object" then return true
1638 if nblock
isa ABlockExpr and nblock
.n_expr
.length
== 0 then return true
1643 redef class AInternMethPropdef
1644 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1646 var pname
= mpropdef
.mproperty
.name
1647 var cname
= mpropdef
.mclassdef
.mclass
.name
1648 var ret
= mpropdef
.msignature
.return_mtype
1650 ret
= v
.resolve_for
(ret
, arguments
.first
)
1652 if pname
!= "==" and pname
!= "!=" then
1653 v
.adapt_signature
(mpropdef
, arguments
)
1655 if cname
== "Int" then
1656 if pname
== "output" then
1657 v
.add
("printf(\"%ld\\n\
", {arguments.first});")
1659 else if pname
== "object_id" then
1660 v
.ret
(arguments
.first
)
1662 else if pname
== "+" then
1663 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1665 else if pname
== "-" then
1666 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1668 else if pname
== "unary -" then
1669 v
.ret
(v
.new_expr
("-{arguments[0]}", ret
.as(not null)))
1671 else if pname
== "succ" then
1672 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1674 else if pname
== "prec" then
1675 v
.ret
(v
.new_expr
("{arguments[0]}-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
== "lshift" then
1687 v
.ret
(v
.new_expr
("{arguments[0]} << {arguments[1]}", ret
.as(not null)))
1689 else if pname
== "rshift" then
1690 v
.ret
(v
.new_expr
("{arguments[0]} >> {arguments[1]}", ret
.as(not null)))
1692 else if pname
== "==" then
1693 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1695 else if pname
== "!=" then
1696 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1697 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1699 else if pname
== "<" then
1700 v
.ret
(v
.new_expr
("{arguments[0]} < {arguments[1]}", ret
.as(not null)))
1702 else if pname
== ">" then
1703 v
.ret
(v
.new_expr
("{arguments[0]} > {arguments[1]}", ret
.as(not null)))
1705 else if pname
== "<=" then
1706 v
.ret
(v
.new_expr
("{arguments[0]} <= {arguments[1]}", ret
.as(not null)))
1708 else if pname
== ">=" then
1709 v
.ret
(v
.new_expr
("{arguments[0]} >= {arguments[1]}", ret
.as(not null)))
1711 else if pname
== "to_f" then
1712 v
.ret
(v
.new_expr
("(double){arguments[0]}", ret
.as(not null)))
1714 else if pname
== "ascii" then
1715 v
.ret
(v
.new_expr
("{arguments[0]}", ret
.as(not null)))
1718 else if cname
== "Char" then
1719 if pname
== "output" then
1720 v
.add
("printf(\"%c\
", {arguments.first});")
1722 else if pname
== "object_id" then
1723 v
.ret
(arguments
.first
)
1725 else if pname
== "+" then
1726 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1728 else if pname
== "-" then
1729 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1731 else if pname
== "==" then
1732 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1734 else if pname
== "!=" then
1735 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1736 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1738 else if pname
== "succ" then
1739 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1741 else if pname
== "prec" then
1742 v
.ret
(v
.new_expr
("{arguments[0]}-1", 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
("{arguments[0]}-'0'", ret
.as(not null)))
1759 else if pname
== "ascii" then
1760 v
.ret
(v
.new_expr
("(unsigned char){arguments[0]}", ret
.as(not null)))
1763 else if cname
== "Bool" then
1764 if pname
== "output" then
1765 v
.add
("printf({arguments.first}?\"true\\n\
":\"false\\n\
");")
1767 else if pname
== "object_id" then
1768 v
.ret
(arguments
.first
)
1770 else if pname
== "==" then
1771 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1773 else if pname
== "!=" then
1774 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1775 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1778 else if cname
== "Float" then
1779 if pname
== "output" then
1780 v
.add
("printf(\"%f\\n\
", {arguments.first});")
1782 else if pname
== "object_id" then
1783 v
.ret
(v
.new_expr
("(double){arguments.first}", ret
.as(not null)))
1785 else if pname
== "+" then
1786 v
.ret
(v
.new_expr
("{arguments[0]} + {arguments[1]}", ret
.as(not null)))
1788 else if pname
== "-" then
1789 v
.ret
(v
.new_expr
("{arguments[0]} - {arguments[1]}", ret
.as(not null)))
1791 else if pname
== "unary -" then
1792 v
.ret
(v
.new_expr
("-{arguments[0]}", ret
.as(not null)))
1794 else if pname
== "succ" then
1795 v
.ret
(v
.new_expr
("{arguments[0]}+1", ret
.as(not null)))
1797 else if pname
== "prec" then
1798 v
.ret
(v
.new_expr
("{arguments[0]}-1", ret
.as(not null)))
1800 else if pname
== "*" then
1801 v
.ret
(v
.new_expr
("{arguments[0]} * {arguments[1]}", ret
.as(not null)))
1803 else if pname
== "/" then
1804 v
.ret
(v
.new_expr
("{arguments[0]} / {arguments[1]}", ret
.as(not null)))
1806 else if pname
== "==" then
1807 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1809 else if pname
== "!=" then
1810 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1811 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1813 else if pname
== "<" then
1814 v
.ret
(v
.new_expr
("{arguments[0]} < {arguments[1]}", ret
.as(not null)))
1816 else if pname
== ">" then
1817 v
.ret
(v
.new_expr
("{arguments[0]} > {arguments[1]}", ret
.as(not null)))
1819 else if pname
== "<=" then
1820 v
.ret
(v
.new_expr
("{arguments[0]} <= {arguments[1]}", ret
.as(not null)))
1822 else if pname
== ">=" then
1823 v
.ret
(v
.new_expr
("{arguments[0]} >= {arguments[1]}", ret
.as(not null)))
1825 else if pname
== "to_i" then
1826 v
.ret
(v
.new_expr
("(long){arguments[0]}", ret
.as(not null)))
1829 else if cname
== "Char" then
1830 if pname
== "output" then
1831 v
.add
("printf(\"%c\
", {arguments.first});")
1833 else if pname
== "object_id" then
1834 v
.ret
(arguments
.first
)
1836 else if pname
== "==" then
1837 v
.ret
(v
.equal_test
(arguments
[0], arguments
[1]))
1839 else if pname
== "!=" then
1840 var res
= v
.equal_test
(arguments
[0], arguments
[1])
1841 v
.ret
(v
.new_expr
("!{res}", ret
.as(not null)))
1843 else if pname
== "ascii" then
1844 v
.ret
(v
.new_expr
("{arguments[0]}", ret
.as(not null)))
1847 else if cname
== "NativeString" then
1848 if pname
== "[]" then
1849 v
.ret
(v
.new_expr
("{arguments[0]}[{arguments[1]}]", ret
.as(not null)))
1851 else if pname
== "[]=" then
1852 v
.add
("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1854 else if pname
== "copy_to" then
1855 v
.add
("memcpy({arguments[1]}+{arguments[4]},{arguments[0]}+{arguments[3]},{arguments[2]});")
1857 else if pname
== "atoi" then
1858 v
.ret
(v
.new_expr
("atoi({arguments[0]});", ret
.as(not null)))
1861 else if cname
== "NativeArray" then
1862 var elttype
= arguments
.first
.mtype
1863 if pname
== "[]" then
1864 v
.ret
(v
.new_expr
("{arguments[0]}[{arguments[1]}]", ret
.as(not null)))
1866 else if pname
== "[]=" then
1867 v
.add
("{arguments[0]}[{arguments[1]}]={arguments[2]};")
1869 else if pname
== "copy_to" then
1870 v
.add
("memcpy({arguments[1]},{arguments[0]},{arguments[2]}*sizeof({elttype.ctype}));")
1874 if pname
== "exit" then
1875 v
.add
("exit({arguments[1]});")
1877 else if pname
== "sys" then
1878 v
.ret
(v
.new_expr
("glob_sys", ret
.as(not null)))
1880 else if pname
== "calloc_string" then
1881 v
.ret
(v
.new_expr
("(char*)GC_MALLOC({arguments[1]})", ret
.as(not null)))
1883 else if pname
== "calloc_array" then
1884 var elttype
= arguments
.first
.mtype
.supertype_to
(v
.compiler
.mainmodule
,arguments
.first
.mtype
.as(MClassType),v
.get_class
("ArrayCapable")).as(MGenericType).arguments
.first
1885 v
.ret
(v
.new_expr
("({elttype.ctype}*)GC_MALLOC({arguments[1]} * sizeof({elttype.ctype}))", ret
.as(not null)))
1887 else if pname
== "object_id" then
1888 v
.ret
(v
.new_expr
("(long){arguments.first}", ret
.as(not null)))
1890 else if pname
== "is_same_type" then
1891 v
.ret
(v
.is_same_type_test
(arguments
[0], arguments
[1]))
1893 else if pname
== "output_class_name" then
1894 var nat
= v
.class_name_string
(arguments
.first
)
1895 v
.add
("printf(\"%s\\n\
", {nat});")
1897 else if pname
== "native_class_name" then
1898 var nat
= v
.class_name_string
(arguments
.first
)
1899 v
.ret
(v
.new_expr
("(char*){nat}", ret
.as(not null)))
1902 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name}:{mpropdef} at
{location.to_s}\\n\
");")
1903 debug
("Not implemented {mpropdef}")
1907 redef class AExternMethPropdef
1908 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1911 var nextern
= self.n_extern
1912 if nextern
== null then
1913 debug
("{mpropdef} need extern name")
1916 externname
= nextern
.text
.substring
(1, nextern
.text
.length-2
)
1917 if location
.file
!= null then
1918 var file
= location
.file
.filename
1919 v
.compiler
.add_extern
(file
)
1921 var res
: nullable RuntimeVariable = null
1922 var ret
= mpropdef
.msignature
.return_mtype
1924 ret
= v
.resolve_for
(ret
, arguments
.first
)
1925 res
= v
.new_var
(ret
)
1929 v
.add
("{externname}({arguments.join(", ")});")
1931 v
.add
("{res} = {externname}({arguments.join(", ")});")
1937 redef class AExternInitPropdef
1938 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1941 var nextern
= self.n_extern
1942 if nextern
== null then
1943 debug
("{mpropdef} need extern name")
1946 externname
= nextern
.text
.substring
(1, nextern
.text
.length-2
)
1947 if location
.file
!= null then
1948 var file
= location
.file
.filename
1949 v
.compiler
.add_extern
(file
)
1951 var ret
= arguments
.first
.mtype
1952 var res
= v
.new_var
(ret
)
1956 v
.add
("{res} = {externname}({arguments.join(", ")});")
1961 redef class AAttrPropdef
1962 redef fun compile_to_c
(v
, mpropdef
, arguments
)
1964 if arguments
.length
== 1 then
1965 var res
= v
.read_attribute
(self.mpropdef
.mproperty
, arguments
.first
)
1966 v
.assign
(v
.frame
.returnvar
.as(not null), res
)
1968 v
.write_attribute
(self.mpropdef
.mproperty
, arguments
.first
, arguments
[1])
1972 fun init_expr
(v
: GlobalCompilerVisitor, recv
: RuntimeVariable)
1974 var nexpr
= self.n_expr
1975 if nexpr
!= null then
1976 var old_frame
= v
.frame
1977 var frame
= new Frame(v
, self.mpropdef
.as(not null), recv
.mtype
.as(MClassType), [recv
])
1979 var value
= v
.expr
(nexpr
, self.mpropdef
.static_mtype
)
1980 v
.write_attribute
(self.mpropdef
.mproperty
, recv
, value
)
1986 redef class AClassdef
1987 private fun compile_to_c
(v
: GlobalCompilerVisitor, mpropdef
: MMethodDef, arguments
: Array[RuntimeVariable])
1989 if mpropdef
== self.mfree_init
then
1990 var super_inits
= self.super_inits
1991 if super_inits
!= null then
1992 assert arguments
.length
== 1
1993 for su
in super_inits
do
1994 v
.send
(su
, arguments
)
1998 var recv
= arguments
.first
2000 # Collect undefined attributes
2001 for npropdef
in self.n_propdefs
do
2002 if npropdef
isa AAttrPropdef and npropdef
.n_expr
== null then
2003 v
.write_attribute
(npropdef
.mpropdef
.mproperty
, recv
, arguments
[i
])
2013 redef class ADeferredMethPropdef
2014 redef fun compile_to_c
(v
, mpropdef
, arguments
)
2016 v
.add
("printf(\"Not implemented
{class_name} {mpropdef} at
{location.to_s}\\n\
");")
2020 redef fun can_inline
do return true
2024 # Try to compile self as an expression
2025 # Do not call this method directly, use `v.expr' instead
2026 private fun expr
(v
: GlobalCompilerVisitor): nullable RuntimeVariable
2028 debug
("Unimplemented expr {class_name}")
2029 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name}:{location.to_s}\\n\
");")
2030 var mtype
= self.mtype
2031 if mtype
== null then
2034 var res
= v
.new_var
(mtype
)
2035 v
.add
("/* {res} = NOT YET {class_name} */")
2040 # Try to compile self as a statement
2041 # Do not call this method directly, use `v.stmt' instead
2042 private fun stmt
(v
: GlobalCompilerVisitor)
2045 if res
!= null then v
.add
("{res};")
2050 redef class ABlockExpr
2053 for e
in self.n_expr
do
2059 redef class AVardeclExpr
2062 var variable
= self.variable
.as(not null)
2063 var ne
= self.n_expr
2065 var i
= v
.expr
(ne
, variable
.declared_type
)
2066 v
.assign
(v
.variable
(variable
), i
)
2071 redef class AVarExpr
2074 var res
= v
.variable
(self.variable
.as(not null))
2075 var mtype
= self.mtype
.as(not null)
2076 return v
.autoadapt
(res
, mtype
)
2080 redef class AVarAssignExpr
2083 var variable
= self.variable
.as(not null)
2084 var i
= v
.expr
(self.n_value
, variable
.declared_type
)
2085 v
.assign
(v
.variable
(variable
), i
)
2089 redef class AVarReassignExpr
2092 var variable
= self.variable
.as(not null)
2093 var vari
= v
.variable
(variable
)
2094 var value
= v
.expr
(self.n_value
, variable
.declared_type
)
2095 var res
= v
.send
(reassign_property
.mproperty
, [vari
, value
])
2097 v
.assign
(v
.variable
(variable
), res
)
2101 redef class ASelfExpr
2104 return v
.frame
.arguments
.first
2108 redef class AContinueExpr
2111 v
.add
("goto CONTINUE_{v.escapemark_name(self.escapemark)};")
2115 redef class ABreakExpr
2118 v
.add
("goto BREAK_{v.escapemark_name(self.escapemark)};")
2122 redef class AReturnExpr
2125 var nexpr
= self.n_expr
2126 if nexpr
!= null then
2127 var returnvar
= v
.frame
.returnvar
.as(not null)
2128 var i
= v
.expr
(nexpr
, returnvar
.mtype
)
2129 v
.assign
(returnvar
, i
)
2131 v
.add
("goto {v.frame.returnlabel.as(not null)};")
2135 redef class AAbortExpr
2138 v
.add_abort
("Aborted")
2145 var cond
= v
.expr_bool
(self.n_expr
)
2146 v
.add
("if ({cond})\{")
2154 redef class AIfexprExpr
2157 var res
= v
.new_var
(self.mtype
.as(not null))
2158 var cond
= v
.expr_bool
(self.n_expr
)
2159 v
.add
("if ({cond})\{")
2160 v
.assign
(res
, v
.expr
(self.n_then
, null))
2162 v
.assign
(res
, v
.expr
(self.n_else
, null))
2171 v
.stmt
(self.n_block
)
2172 var escapemark
= self.escapemark
2173 if escapemark
!= null then
2174 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2179 redef class AWhileExpr
2183 var cond
= v
.expr_bool
(self.n_expr
)
2184 v
.add
("if (!{cond}) break;")
2185 v
.stmt
(self.n_block
)
2186 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2188 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2192 redef class ALoopExpr
2196 v
.stmt
(self.n_block
)
2197 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2199 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2203 redef class AForExpr
2206 var cl
= v
.expr
(self.n_expr
, null)
2207 var it
= v
.send
(v
.get_property
("iterator", cl
.mtype
), [cl
])
2210 var ok
= v
.send
(v
.get_property
("is_ok", it
.mtype
), [it
])
2212 v
.add
("if(!{ok}) break;")
2213 if self.variables
.length
== 1 then
2214 var i
= v
.send
(v
.get_property
("item", it
.mtype
), [it
])
2216 v
.assign
(v
.variable
(variables
.first
), i
)
2217 else if self.variables
.length
== 2 then
2218 var i
= v
.send
(v
.get_property
("key", it
.mtype
), [it
])
2220 v
.assign
(v
.variable
(variables
[0]), i
)
2221 i
= v
.send
(v
.get_property
("item", it
.mtype
), [it
])
2223 v
.assign
(v
.variable
(variables
[1]), i
)
2227 v
.stmt
(self.n_block
)
2228 v
.add
("CONTINUE_{v.escapemark_name(escapemark)}: (void)0;")
2229 v
.send
(v
.get_property
("next", it
.mtype
), [it
])
2231 v
.add
("BREAK_{v.escapemark_name(escapemark)}: (void)0;")
2235 redef class AAssertExpr
2238 var cond
= v
.expr_bool
(self.n_expr
)
2239 v
.add
("if (!{cond}) \{")
2243 v
.add_abort
("Assert '{nid.text}' failed")
2245 v
.add_abort
("Assert failed")
2254 var res
= v
.new_var
(self.mtype
.as(not null))
2255 var i1
= v
.expr_bool
(self.n_expr
)
2256 v
.add
("if ({i1}) \{")
2259 var i2
= v
.expr_bool
(self.n_expr2
)
2260 v
.add
("{res} = {i2};")
2266 redef class AAndExpr
2269 var res
= v
.new_var
(self.mtype
.as(not null))
2270 var i1
= v
.expr_bool
(self.n_expr
)
2271 v
.add
("if (!{i1}) \{")
2274 var i2
= v
.expr_bool
(self.n_expr2
)
2275 v
.add
("{res} = {i2};")
2281 redef class ANotExpr
2284 var cond
= v
.expr_bool
(self.n_expr
)
2285 return v
.new_expr
("!{cond}", self.mtype
.as(not null))
2289 redef class AOrElseExpr
2292 var res
= v
.new_var
(self.mtype
.as(not null))
2293 var i1
= v
.expr
(self.n_expr
, null)
2294 v
.add
("if ({i1}!=NULL) \{")
2297 var i2
= v
.expr
(self.n_expr2
, null)
2307 var value1
= v
.expr
(self.n_expr
, null)
2308 var value2
= v
.expr
(self.n_expr2
, null)
2309 return v
.equal_test
(value1
, value2
)
2313 redef class AIntExpr
2316 return v
.new_expr
("{self.n_number.text}", self.mtype
.as(not null))
2320 redef class AFloatExpr
2323 return v
.new_expr
("{self.n_float.text}", self.mtype
.as(not null))
2327 redef class ACharExpr
2330 return v
.new_expr
("{self.n_char.text}", self.mtype
.as(not null))
2334 redef class AArrayExpr
2337 var mtype
= self.mtype
.as(MGenericType).arguments
.first
2338 var array
= new Array[RuntimeVariable]
2339 for nexpr
in self.n_exprs
.n_exprs
do
2340 var i
= v
.expr
(nexpr
, mtype
)
2343 return v
.array_instance
(array
, mtype
)
2347 redef class AStringFormExpr
2350 return v
.string_instance
(self.value
.as(not null))
2354 redef class ASuperstringExpr
2357 var array
= new Array[RuntimeVariable]
2358 for ne
in self.n_exprs
do
2359 if ne
isa AStringFormExpr and ne
.value
== "" then continue # skip empty sub-strings
2360 var i
= v
.expr
(ne
, null)
2363 var a
= v
.array_instance
(array
, v
.object_type
)
2364 var res
= v
.send
(v
.get_property
("to_s", a
.mtype
), [a
])
2369 redef class ACrangeExpr
2372 var i1
= v
.expr
(self.n_expr
, null)
2373 var i2
= v
.expr
(self.n_expr2
, null)
2374 var res
= v
.init_instance
(self.mtype
.as(MClassType))
2375 var it
= v
.send
(v
.get_property
("init", res
.mtype
), [res
, i1
, i2
])
2376 v
.check_init_instance
(res
)
2381 redef class AOrangeExpr
2384 var i1
= v
.expr
(self.n_expr
, null)
2385 var i2
= v
.expr
(self.n_expr2
, null)
2386 var res
= v
.init_instance
(self.mtype
.as(MClassType))
2387 var it
= v
.send
(v
.get_property
("without_last", res
.mtype
), [res
, i1
, i2
])
2388 v
.check_init_instance
(res
)
2393 redef class ATrueExpr
2396 return v
.new_expr
("1", self.mtype
.as(not null))
2400 redef class AFalseExpr
2403 return v
.new_expr
("0", self.mtype
.as(not null))
2407 redef class ANullExpr
2410 var res
= v
.new_expr
("NULL", self.mtype
.as(not null))
2415 redef class AIsaExpr
2418 var i
= v
.expr
(self.n_expr
, null)
2419 return v
.type_test
(i
, self.cast_type
.as(not null))
2423 redef class AAsCastExpr
2426 var i
= v
.expr
(self.n_expr
, null)
2427 var cond
= v
.type_test
(i
, self.mtype
.as(not null))
2428 v
.add
("if (!{cond}) \{")
2429 v
.add_abort
("Cast failed")
2435 redef class AAsNotnullExpr
2438 var i
= v
.expr
(self.n_expr
, null)
2439 v
.add
("if ({i} == NULL) \{")
2440 v
.add_abort
("Cast failed")
2446 redef class AParExpr
2449 return v
.expr
(self.n_expr
, null)
2453 redef class AOnceExpr
2456 var mtype
= self.mtype
.as(not null)
2457 var name
= v
.get_name
("varonce")
2458 var guard
= v
.get_name
(name
+ "_guard")
2459 v
.add_decl
("static {mtype.ctype} {name};")
2460 v
.add_decl
("static int {guard};")
2461 var res
= v
.new_var
(mtype
)
2462 v
.add
("if ({guard}) \{")
2463 v
.add
("{res} = {name};")
2465 var i
= v
.expr
(self.n_expr
, mtype
)
2466 v
.add
("{res} = {i};")
2467 v
.add
("{name} = {res};")
2468 v
.add
("{guard} = 1;")
2474 redef class ASendExpr
2477 var recv
= v
.expr
(self.n_expr
, null)
2479 for a
in self.raw_arguments
.as(not null) do
2480 args
.add
(v
.expr
(a
, null))
2482 var mproperty
= self.mproperty
.as(not null)
2483 return v
.send
(mproperty
, args
)
2487 redef class ASendReassignFormExpr
2490 var recv
= v
.expr
(self.n_expr
, null)
2492 for a
in self.raw_arguments
.as(not null) do
2493 args
.add
(v
.expr
(a
, null))
2495 var value
= v
.expr
(self.n_value
, null)
2497 var mproperty
= self.mproperty
.as(not null)
2498 var left
= v
.send
(mproperty
, args
)
2501 var res
= v
.send
(reassign_property
.mproperty
, [left
, value
])
2505 v
.send
(self.write_mproperty
.as(not null), args
)
2509 redef class ASuperExpr
2512 var recv
= v
.frame
.arguments
.first
2514 for a
in self.n_args
.n_exprs
do
2515 args
.add
(v
.expr
(a
, null))
2517 if args
.length
== 1 then
2518 args
= v
.frame
.arguments
2521 var mproperty
= self.mproperty
2522 if mproperty
!= null then
2523 if mproperty
.intro
.msignature
.arity
== 0 then
2527 var res
= v
.send
(mproperty
, args
)
2531 # stantard call-next-method
2532 var mpropdef
= v
.frame
.mpropdef
2533 # FIXME: we do not want an ugly static call!
2534 var mpropdefs
= mpropdef
.mproperty
.lookup_super_definitions
(mpropdef
.mclassdef
.mmodule
, mpropdef
.mclassdef
.bound_mtype
)
2535 if mpropdefs
.length
!= 1 then
2536 v
.add
("printf(\"NOT YET IMPLEMENTED {class_name} {mpropdef} at
{location.to_s}\\n\
");")
2537 debug
("MPRODFEFS for super {mpropdef} for {recv}: {mpropdefs.join(", ")}")
2539 mpropdef
= mpropdefs
.first
2540 assert mpropdef
isa MMethodDef
2541 var res
= v
.call
(mpropdef
, recv
.mtype
.as(MClassType), args
)
2546 redef class ANewExpr
2549 var mproperty
= self.mproperty
.as(not null)
2550 var mtype
= self.mtype
.as(MClassType)
2552 var ctype
= mtype
.ctype
2553 if ctype
== "val*" then
2554 recv
= v
.init_instance
(mtype
)
2555 else if ctype
== "void*" then
2556 recv
= v
.new_expr
("NULL/*special!*/", mtype
)
2558 debug
("cannot new {mtype}")
2562 for a
in self.n_args
.n_exprs
do
2563 args
.add
(v
.expr
(a
, null))
2565 var res2
= v
.send
(mproperty
, args
)
2566 if res2
!= null then
2567 #self.debug("got {res2} from {mproperty}. drop {recv}")
2570 v
.check_init_instance
(recv
)
2575 redef class AAttrExpr
2578 var recv
= v
.expr
(self.n_expr
, null)
2579 var mproperty
= self.mproperty
.as(not null)
2580 return v
.read_attribute
(mproperty
, recv
)
2584 redef class AAttrAssignExpr
2587 var recv
= v
.expr
(self.n_expr
, null)
2588 var i
= v
.expr
(self.n_value
, null)
2589 var mproperty
= self.mproperty
.as(not null)
2590 v
.write_attribute
(mproperty
, recv
, i
)
2594 redef class AAttrReassignExpr
2597 var recv
= v
.expr
(self.n_expr
, null)
2598 var value
= v
.expr
(self.n_value
, null)
2599 var mproperty
= self.mproperty
.as(not null)
2600 var attr
= v
.read_attribute
(mproperty
, recv
)
2601 var res
= v
.send
(reassign_property
.mproperty
, [attr
, value
])
2603 v
.write_attribute
(mproperty
, recv
, res
)
2607 redef class AIssetAttrExpr
2610 redef class ADebugTypeExpr