import semantize
import platform
import c_tools
+private import annotation
# Add compiling options
redef class ToolContext
# The main module of the program currently compiled
# Is assigned during the separate compilation
- var mainmodule: MModule writable
+ var mainmodule: MModule is writable
# The real main module of the program
var realmainmodule: MModule
# The modeulbuilder used to know the model and the AST
- var modelbuilder: ModelBuilder protected writable
+ var modelbuilder: ModelBuilder is protected writable
# Is hardening asked? (see --hardening)
fun hardening: Bool do return self.modelbuilder.toolcontext.opt_hardening.value
fun new_visitor: VISITOR is abstract
# Where global declaration are stored (the main .h)
- var header: CodeWriter writable
+ var header: CodeWriter is writable
# Provide a declaration that can be requested (before or latter) by a visitor
fun provide_declaration(key: String, s: String)
var compiler: COMPILER
# The current visited AST node
- var current_node: nullable ANode writable = null
+ var current_node: nullable ANode = null is writable
# The current `Frame`
- var frame: nullable Frame writable
+ var frame: nullable Frame is writable
# Alias for self.compiler.mainmodule.object_type
fun object_type: MClassType do return self.compiler.mainmodule.object_type
# Generate a super call from a method definition
fun supercall(m: MMethodDef, recvtype: MClassType, args: Array[RuntimeVariable]): nullable RuntimeVariable is abstract
+ # Adapt the arguments of a method according to targetted `MMethodDef`
fun adapt_signature(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
+ # Unbox all the arguments of a method when implemented `extern` or `intern`
+ fun unbox_signature_extern(m: MMethodDef, args: Array[RuntimeVariable]) is abstract
+
# Box or unbox a value to another type iff a C type conversion is needed
# ENSURE: `result.mtype.ctype == mtype.ctype`
fun autobox(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
+ # Box extern classes to be used in the generated code
+ fun box_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
+
+ # Unbox extern classes to be used in extern code (legacy NI and FFI)
+ fun unbox_extern(value: RuntimeVariable, mtype: MType): RuntimeVariable is abstract
+
# Generate a polymorphic subtype test
fun type_test(value: RuntimeVariable, mtype: MType, tag: String): RuntimeVariable is abstract
return res
end
+ # The difference with `new_var` is the C static type of the local variable
+ fun new_var_extern(mtype: MType): RuntimeVariable
+ do
+ mtype = self.anchor(mtype)
+ var name = self.get_name("var")
+ var res = new RuntimeVariable(name, mtype, mtype)
+ self.add_decl("{mtype.ctype_extern} {name} /* : {mtype} for extern */;")
+ return res
+ end
+
# Return a new uninitialized named runtime_variable
fun new_named_var(mtype: MType, name: String): RuntimeVariable
do
# Non cached version of `c_name`
protected fun build_c_name: String is abstract
- protected var c_name_cache: nullable String writable = null
+ protected var c_name_cache: nullable String = null is writable
# Implements a call of the runtime_function
# May inline the body or generate a C function call
var mtype: MType
# The current casted type of the variable (as known in Nit)
- var mcasttype: MType writable
+ var mcasttype: MType is writable
# If the variable exaclty a mcasttype?
# false (usual value) means that the variable is a mcasttype or a subtype.
- var is_exact: Bool writable = false
+ var is_exact: Bool = false is writable
init(name: String, mtype: MType, mcasttype: MType)
do
var arguments: Array[RuntimeVariable]
# The runtime_variable associated to the return (in a function)
- var returnvar: nullable RuntimeVariable writable = null
+ var returnvar: nullable RuntimeVariable = null is writable
# The label at the end of the property
- var returnlabel: nullable String writable = null
+ var returnlabel: nullable String = null is writable
end
redef class MType
# Return the C type associated to a given Nit static type
fun ctype: String do return "val*"
+ # C type outside of the compiler code and in boxes
+ fun ctype_extern: String do return "val*"
+
+ # Short name of the `ctype` to use in unions
fun ctypename: String do return "val"
# Return the name of the C structure associated to a Nit live type
fun c_name: String is abstract
- protected var c_name_cache: nullable String protected writable
+ protected var c_name_cache: nullable String is protected writable
end
redef class MClassType
return "char*"
else if mclass.name == "NativeArray" then
return "val*"
- else if mclass.kind == extern_kind then
- return "void*"
else
return "val*"
end
end
+ redef fun ctype_extern: String
+ do
+ if mclass.kind == extern_kind then
+ return "void*"
+ else
+ return ctype
+ end
+ end
+
redef fun ctypename: String
do
if mclass.name == "Int" then
else if mclass.name == "NativeArray" then
#return "{self.arguments.first.ctype}*"
return "val"
- else if mclass.kind == extern_kind then
- return "ptr"
else
return "val"
end
end
if pname != "==" and pname != "!=" then
v.adapt_signature(mpropdef, arguments)
+ v.unbox_signature_extern(mpropdef, arguments)
end
if cname == "Int" then
if pname == "output" then
fun compile_externmeth_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
do
var externname
- var nextern = self.n_extern
- if nextern == null then return false
- externname = nextern.text.substring(1, nextern.text.length-2)
+ var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
+ if at != null then
+ externname = at.arg_as_string(v.compiler.modelbuilder)
+ if externname == null then return false
+ else
+ var nextern = self.n_extern
+ if nextern == null then return false
+ externname = nextern.text.substring(1, nextern.text.length-2)
+ end
if location.file != null then
var file = location.file.filename
v.add_extern(file)
var ret = mpropdef.msignature.return_mtype
if ret != null then
ret = v.resolve_for(ret, arguments.first)
- res = v.new_var(ret)
+ res = v.new_var_extern(ret)
end
v.adapt_signature(mpropdef, arguments)
+ v.unbox_signature_extern(mpropdef, arguments)
if res == null then
v.add("{externname}({arguments.join(", ")});")
else
v.add("{res} = {externname}({arguments.join(", ")});")
+ res = v.box_extern(res, ret.as(not null))
v.ret(res)
end
return true
fun compile_externinit_to_c(v: AbstractCompilerVisitor, mpropdef: MMethodDef, arguments: Array[RuntimeVariable]): Bool
do
var externname
- var nextern = self.n_extern
- if nextern == null then return false
- externname = nextern.text.substring(1, nextern.text.length-2)
+ var at = self.get_single_annotation("extern", v.compiler.modelbuilder)
+ if at != null then
+ externname = at.arg_as_string(v.compiler.modelbuilder)
+ if externname == null then return false
+ else
+ var nextern = self.n_extern
+ if nextern == null then return false
+ externname = nextern.text.substring(1, nextern.text.length-2)
+ end
if location.file != null then
var file = location.file.filename
v.add_extern(file)
end
v.adapt_signature(mpropdef, arguments)
+ v.unbox_signature_extern(mpropdef, arguments)
var ret = arguments.first.mtype
- var res = v.new_var(ret)
+ var res = v.new_var_extern(ret)
arguments.shift
v.add("{res} = {externname}({arguments.join(", ")});")
+ res = v.box_extern(res, ret)
v.ret(res)
return true
end
return v.native_array_instance(elttype, l)
else if ctype == "val*" then
recv = v.init_instance(mtype)
- else if ctype == "void*" then
+ else if ctype == "char*" then
recv = v.new_expr("NULL/*special!*/", mtype)
else
recv = v.new_expr("({ctype})0/*special!*/", mtype)
nitlanguage / nit.git / blobdiff