compiler: rename `show_backtrace` as `fatal_exit`
[nit.git] / src / compiler / abstract_compiler.nit
index dfe463c..8dd0b8b 100644 (file)
@@ -212,7 +212,7 @@ class MakefileToolchain
 
                var hfilename = compiler.header.file.name + ".h"
                var hfilepath = "{compile_dir}/{hfilename}"
-               var h = new OFStream.open(hfilepath)
+               var h = new FileWriter.open(hfilepath)
                for l in compiler.header.decl_lines do
                        h.write l
                        h.write "\n"
@@ -227,7 +227,7 @@ class MakefileToolchain
                for f in compiler.files do
                        var i = 0
                        var count = 0
-                       var file: nullable OFStream = null
+                       var file: nullable FileWriter = null
                        for vis in f.writers do
                                if vis == compiler.header then continue
                                var total_lines = vis.lines.length + vis.decl_lines.length
@@ -240,7 +240,7 @@ class MakefileToolchain
                                        var cfilepath = "{compile_dir}/{cfilename}"
                                        self.toolcontext.info("new C source files to compile: {cfilepath}", 3)
                                        cfiles.add(cfilename)
-                                       file = new OFStream.open(cfilepath)
+                                       file = new FileWriter.open(cfilepath)
                                        file.write "#include \"{f.name}.0.h\"\n"
                                        count = total_lines
                                end
@@ -258,8 +258,8 @@ class MakefileToolchain
 
                        var cfilename = "{f.name}.0.h"
                        var cfilepath = "{compile_dir}/{cfilename}"
-                       var hfile: nullable OFStream = null
-                       hfile = new OFStream.open(cfilepath)
+                       var hfile: nullable FileWriter = null
+                       hfile = new FileWriter.open(cfilepath)
                        hfile.write "#include \"{hfilename}\"\n"
                        for key in f.required_declarations do
                                if not compiler.provided_declarations.has_key(key) then
@@ -321,7 +321,7 @@ class MakefileToolchain
                end
                var makename = makefile_name(mainmodule)
                var makepath = "{compile_dir}/{makename}"
-               var makefile = new OFStream.open(makepath)
+               var makefile = new FileWriter.open(makepath)
 
                var linker_options = new HashSet[String]
                for m in mainmodule.in_importation.greaters do
@@ -371,7 +371,7 @@ class MakefileToolchain
                if not compiler.linker_script.is_empty then
                        var linker_script_path = "{compile_dir}/linker_script"
                        ofiles.add "linker_script"
-                       var f = new OFStream.open(linker_script_path)
+                       var f = new FileWriter.open(linker_script_path)
                        for l in compiler.linker_script do
                                f.write l
                                f.write "\n"
@@ -546,7 +546,7 @@ abstract class AbstractCompiler
        do
                var compile_dir = modelbuilder.compile_dir
 
-               var stream = new OFStream.open("{compile_dir}/c_functions_hash.c")
+               var stream = new FileWriter.open("{compile_dir}/c_functions_hash.c")
                stream.write("#include <string.h>\n")
                stream.write("#include <stdlib.h>\n")
                stream.write("#include \"c_functions_hash.h\"\n")
@@ -576,7 +576,7 @@ abstract class AbstractCompiler
                stream.write("\}\n")
                stream.close
 
-               stream = new OFStream.open("{compile_dir}/c_functions_hash.h")
+               stream = new FileWriter.open("{compile_dir}/c_functions_hash.h")
                stream.write("const char* get_nit_name(register const char* procname, register unsigned int len);\n")
                stream.close
 
@@ -603,9 +603,9 @@ abstract class AbstractCompiler
                var gccd_disable = modelbuilder.toolcontext.opt_no_gcc_directive.value
                if gccd_disable.has("noreturn") or gccd_disable.has("all") then
                        # Signal handler function prototype
-                       self.header.add_decl("void show_backtrace(int);")
+                       self.header.add_decl("void fatal_exit(int);")
                else
-                       self.header.add_decl("void show_backtrace(int) __attribute__ ((noreturn));")
+                       self.header.add_decl("void fatal_exit(int) __attribute__ ((noreturn));")
                end
 
                if gccd_disable.has("likely") or gccd_disable.has("all") then
@@ -743,10 +743,10 @@ extern void nitni_global_ref_decr( struct nitni_ref *ref );
 
                v.add_decl("void sig_handler(int signo)\{")
                v.add_decl("PRINT_ERROR(\"Caught signal : %s\\n\", strsignal(signo));")
-               v.add_decl("show_backtrace(signo);")
+               v.add_decl("fatal_exit(signo);")
                v.add_decl("\}")
 
-               v.add_decl("void show_backtrace (int signo) \{")
+               v.add_decl("void fatal_exit(int signo) \{")
                if ost == "nitstack" or ost == "libunwind" then
                        v.add_decl("char* opt = getenv(\"NIT_NO_STACK\");")
                        v.add_decl("unw_cursor_t cursor;")
@@ -856,6 +856,12 @@ extern void nitni_global_ref_decr( struct nitni_ref *ref );
 
                v.add("return 0;")
                v.add("\}")
+
+               for m in mainmodule.in_importation.greaters do
+                       var f = "FILE_"+m.c_name
+                       v.add "const char {f}[] = \"{m.location.file.filename.escape_to_c}\";"
+                       provide_declaration(f, "extern const char {f}[];")
+               end
        end
 
        # Copile all C functions related to the [incr|decr]_ref features of the FFI
@@ -1381,6 +1387,24 @@ abstract class AbstractCompilerVisitor
        # Generate a alloc-instance + init-attributes
        fun init_instance(mtype: MClassType): RuntimeVariable is abstract
 
+       # Allocate and init attributes of an instance of a standard or extern class
+       #
+       # Does not support universals and the pseudo-internal `NativeArray` class.
+       fun init_instance_or_extern(mtype: MClassType): RuntimeVariable
+       do
+               var recv
+               var ctype = mtype.ctype
+               assert mtype.mclass.name != "NativeArray"
+               if ctype == "val*" then
+                       recv = init_instance(mtype)
+               else if ctype == "char*" then
+                       recv = new_expr("NULL/*special!*/", mtype)
+               else
+                       recv = new_expr("({ctype})0/*special!*/", mtype)
+               end
+               return recv
+       end
+
        # Set a GC finalizer on `recv`, only if `recv` isa Finalizable
        fun set_finalizer(recv: RuntimeVariable)
        do
@@ -1419,7 +1443,7 @@ abstract class AbstractCompilerVisitor
                var name = self.get_name("varonce")
                self.add_decl("static {mtype.ctype} {name};")
                var res = self.new_var(mtype)
-               self.add("if ({name}) \{")
+               self.add("if (likely({name}!=NULL)) \{")
                self.add("{res} = {name};")
                self.add("\} else \{")
                var native_mtype = self.get_class("NativeString").mclass_type
@@ -1525,12 +1549,15 @@ abstract class AbstractCompilerVisitor
 
        fun add_raw_abort
        do
-               if self.current_node != null and self.current_node.location.file != null then
-                       self.add("PRINT_ERROR(\" (%s:%d)\\n\", \"{self.current_node.location.file.filename.escape_to_c}\", {current_node.location.line_start});")
+               if self.current_node != null and self.current_node.location.file != null and
+                               self.current_node.location.file.mmodule != null then
+                       var f = "FILE_{self.current_node.location.file.mmodule.c_name}"
+                       self.require_declaration(f)
+                       self.add("PRINT_ERROR(\" (%s:%d)\\n\", {f}, {current_node.location.line_start});")
                else
                        self.add("PRINT_ERROR(\"\\n\");")
                end
-               self.add("show_backtrace(1);")
+               self.add("fatal_exit(1);")
        end
 
        # Add a dynamic cast
@@ -1807,6 +1834,15 @@ redef class MMethodDef
                var modelbuilder = v.compiler.modelbuilder
                var val = constant_value
                var node = modelbuilder.mpropdef2node(self)
+
+               if is_abstract then
+                       var cn = v.class_name_string(arguments.first)
+                       v.current_node = node
+                       v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s` called on `%s`\", \"{mproperty.name.escape_to_c}\", {cn});")
+                       v.add_raw_abort
+                       return null
+               end
+
                if node isa APropdef then
                        var oldnode = v.current_node
                        v.current_node = node
@@ -1866,13 +1902,6 @@ end
 redef class AMethPropdef
        redef fun compile_to_c(v, mpropdef, arguments)
        do
-               if mpropdef.is_abstract then
-                       var cn = v.class_name_string(arguments.first)
-                       v.add("PRINT_ERROR(\"Runtime error: Abstract method `%s` called on `%s`\", \"{mpropdef.mproperty.name.escape_to_c}\", {cn});")
-                       v.add_raw_abort
-                       return
-               end
-
                # Call the implicit super-init
                var auto_super_inits = self.auto_super_inits
                if auto_super_inits != null then
@@ -2277,7 +2306,7 @@ redef class AAttrPropdef
 
        fun init_expr(v: AbstractCompilerVisitor, recv: RuntimeVariable)
        do
-               if has_value and not is_lazy then evaluate_expr(v, recv)
+               if has_value and not is_lazy and not n_expr isa ANullExpr then evaluate_expr(v, recv)
        end
 
        # Evaluate, store and return the default value of the attribute
@@ -2796,7 +2825,7 @@ redef class AOnceExpr
                v.add_decl("static {mtype.ctype} {name};")
                v.add_decl("static int {guard};")
                var res = v.new_var(mtype)
-               v.add("if ({guard}) \{")
+               v.add("if (likely({guard})) \{")
                v.add("{res} = {name};")
                v.add("\} else \{")
                var i = v.expr(self.n_expr, mtype)
@@ -2874,22 +2903,17 @@ redef class ANewExpr
        do
                var mtype = self.recvtype
                assert mtype != null
-               var recv
-               var ctype = mtype.ctype
+
                if mtype.mclass.name == "NativeArray" then
                        assert self.n_args.n_exprs.length == 1
                        var l = v.expr(self.n_args.n_exprs.first, null)
                        assert mtype isa MGenericType
                        var elttype = mtype.arguments.first
                        return v.native_array_instance(elttype, l)
-               else if ctype == "val*" then
-                       recv = v.init_instance(mtype)
-               else if ctype == "char*" then
-                       recv = v.new_expr("NULL/*special!*/", mtype)
-               else
-                       recv = v.new_expr("({ctype})0/*special!*/", mtype)
                end
 
+               var recv = v.init_instance_or_extern(mtype)
+
                var callsite = self.callsite.as(not null)
                var args = v.varargize(callsite.mpropdef, recv, self.n_args.n_exprs)
                var res2 = v.compile_callsite(callsite, args)
@@ -2990,7 +3014,7 @@ redef class MModule
 
        # Give requided addinional system libraries (as given to LD_LIBS)
        # Note: can return null instead of an empty set
-       fun collect_linker_libs: nullable Set[String] do return null
+       fun collect_linker_libs: nullable Array[String] do return null
 end
 
 # Create a tool context to handle options and paths