+++ /dev/null
-# This file is part of NIT ( http://www.nitlanguage.org ).
-#
-# Copyright 2008 Jean Privat <jean@pryen.org>
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Common things for NIT compilation and C generation
-module primitive_info
-
-#FIXME Split this module into 2: one in metamodel and one in compiling
-
-import metamodel
-
-redef class MMLocalClass
- # extern type of extern classes
- fun extern_c_type : String is abstract
-
- # Cached primitive_info result
- var _primitive_info_cache: nullable PrimitiveInfo = null
-
- # If primitive_info result cached?
- var _primitive_info_b: Bool = false
-
- # Return the primitive information of the class.
- # Return null if the class is not primitive
- fun primitive_info: nullable PrimitiveInfo
- do
- if _primitive_info_b == true then return _primitive_info_cache
-
- var ctypes = once primitive_ctypes
- if ctypes.has_key(name) then
- _primitive_info_cache = ctypes[name]
- _primitive_info_b = true
- return _primitive_info_cache
- end
- if global.is_extern then
- var pi = new PrimitiveInfo( name, false, extern_c_type )
- _primitive_info_cache = pi
- _primitive_info_b = true
- return _primitive_info_cache
- end
- var i = ctypes.iterator
- while i.is_ok do
- var n = i.key
- if mmmodule.has_global_class_named(n) then
- var c = mmmodule.class_by_name(n)
- if cshe < c then
- _primitive_info_cache = i.item
- _primitive_info_b = true
- return _primitive_info_cache
- end
- end
- i.next
- end
- _primitive_info_b = true
- return null
- end
-
- # Static information of primitive types
- private fun primitive_ctypes: HashMap[Symbol, PrimitiveInfo]
- do
- var res = new HashMap[Symbol, PrimitiveInfo]
- var pnames = ["Int", "Char", "Bool", "Float", "NativeString", "Pointer"]
- var tagged = [true, true, true, false, false, false]
- var cnames = ["bigint", "char", "int", "float", "char *", "void *"]
- for i in [0..pnames.length[ do
- var n = pnames[i].to_symbol
- var pi = new PrimitiveInfo(n, tagged[i], cnames[i])
- res[n] = pi
- end
- return res
- end
-end
-
-# Information about a primitive class
-class PrimitiveInfo
- # The name of the class
- readable var _name: Symbol
-
- # Is the class tagged (aka not boxed)
- readable var _tagged: Bool
-
- # The corresponding c type for the primitive value
- readable var _cname: String
-
- private init(n: Symbol, t: Bool, c: String)
- do
- _name = n
- _tagged = t
- _cname = c
- end
-end
-
-redef class MMType
- # The corresponding c type
- fun cname: String
- do
- var pi = local_class.primitive_info
- if pi == null then
- return "val_t"
- else
- return pi.cname
- end
- end
-
- # Is the type tagged?
- fun is_tagged: Bool
- do
- if is_nullable then return false
- var pi = local_class.primitive_info
- return pi != null and pi.tagged
- end
-
- # The default c value for uninitialized types.
- # Return "null" for non primitive types and something more specific for primitive types
- fun default_cvalue: String
- do
- var pi = local_class.primitive_info
- if pi != null and pi.tagged then
- return "TAG_{local_class.name}(({pi.cname})0)"
- else
- return "NIT_NULL"
- end
- end
-
- # Box (or tag) a primitive value
- # Is identity if not primitive
- fun boxtype(s: String): String
- do
- var pi = local_class.primitive_info
- if pi == null or is_nullable then
- return s
- else if pi.tagged then
- return "TAG_{local_class.name}({s})"
- else
- return "BOX_{local_class.name}({s})"
- end
- end
-
- # Unbox (or untag) a primitive value
- # Is identity if not primitive
- fun unboxtype(s: String): String
- do
- var pi = local_class.primitive_info
- if pi == null or is_nullable then
- return s
- else if pi.tagged then
- return "UNTAG_{local_class.name}({s})"
- else
- return "UNBOX_{local_class.name}({s})"
- end
- end
-end
-
-redef class MMMethod
- fun default_extern_name : String
- do
- return "{friendly_extern_name(local_class)}___impl"
- end
-
- # Friendly name for this method. Is mainly the class name followed by the
- # function name. It is prefixed with "new" for a constructor.
- fun friendly_extern_name( local_class : MMLocalClass ) : String
- do
- if not global.is_init then
- var native_fun_name : String
- var method_name = name.to_s
- if method_name == "+" then
- native_fun_name = "_plus" # add
- else if method_name == "-" then
- native_fun_name = "_minus" # sub
- else if method_name == "*" then
- native_fun_name = "_star" # multi
- else if method_name == "/" then
- native_fun_name = "_slash" # div
- else if method_name == "%" then
- native_fun_name = "_percent" # mod
- else if method_name == "[]" then
- native_fun_name = "_index" # brackets
- else if method_name == "[]=" then
- native_fun_name = "_index_assign" # brackets
- else if method_name == "==" then
- native_fun_name = "_equal" # eq
- else if method_name == "<" then
- native_fun_name = "_less" # lt
- else if method_name == ">" then
- native_fun_name = "_greater" # gt
- else if method_name == "<=" then
- native_fun_name = "_less_or_equal" # greater_or_equal
- else if method_name == ">=" then
- native_fun_name = "_ge" # smaller_or_equal
- else if method_name == "!=" then
- native_fun_name = "_not_equal" # bang
- else if method_name == ">>" then
- native_fun_name = "_right"
- else if method_name == "<<" then
- native_fun_name = "_left"
- else if method_name == "<=>" then
- native_fun_name = "_starship"
- else if method_name[ method_name.length-1 ] == '=' then
- native_fun_name = "{method_name.substring(0,method_name.length-1)}__assign"
- else
- native_fun_name = method_name
- end
-
- return "{local_class.name}_{native_fun_name}"
- else
- if name == once "init".to_symbol then
- return "new_{local_class.name}"
- else
- return "new_{local_class.name}_{name}"
- end
- end
- end
-end
-
nitlanguage / nit.git / blobdiff