+++ /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
-package compiling_base
-
-import syntax
-private import utils
-import primitive_info
-
-redef class ToolContext
- readable writable var _global: Bool = false
- readable writable var _compdir: nullable String = null
- readable writable var _clibdir: nullable String = null
- readable writable var _bindir: nullable String = null
- readable writable var _output_file: nullable String = null
- readable writable var _boost: Bool = false
- readable writable var _no_cc: Bool = false
- readable writable var _ext_prefix: String = ""
-end
-
-# Class used to generate files.
-# Note that in fact it is not a visitor.
-# Note also that this class is unefficient and poorly designed thus requires love.
-class CompilerVisitor
- # Add a line in the current declaration block
- fun add_decl(s: String...)
- do
- add_line_to(_ctx.decls, s)
- end
-
- # Add a line in the current instr block
- fun add_instr(s: String...)
- do
- add_line_to(_ctx.instrs, s)
- end
-
- fun add_line_to(a: Array[String], s: Array[String])
- do
- if _indent_level >= 8 then
- a.add("\t\t")
- else
- for i in [0.._indent_level[ do
- a.add(" ")
- end
- end
- for i in s do
- a.add(i)
- end
- a.add("\n")
- end
-
- # Add a assignment between a variable and an expression
- fun add_assignment(v: String, s: String)
- do
- if v != s then
- add_instr(v, " = ", s, ";")
- end
- end
-
- # C outputs written outside the current C function.
- readable writable var _out_contexts: Array[CContext] = new Array[CContext]
-
- # Return a unique new number for the instance
- fun new_number: Int
- do
- var res = _number_cpt
- _number_cpt = res + 1
- return res
- end
- # next number for new_number
- var _number_cpt: Int = 0
-
- # Add an indent level.
- # New decl and instr will be indented.
- fun indent do _indent_level += 1
-
- # Remove an indent level.
- fun unindent
- do
- _indent_level -= 1
- if _indent_level < 0 then _indent_level = 0
- end
-
- # Return a big string containing all decl and instr
- redef fun to_s
- do
- var out = new Array[String]
- out.append(_ctx.decls)
- out.append(_ctx.instrs)
- return out.to_s
- end
-
- # The processed module
- readable var _module: MMModule
-
- # Where instr and decl are stored
- readable writable var _ctx: CContext = new CContext
-
- # The current indent lever
- readable writable var _indent_level: Int = 0
-
- # The ToolContext info
- readable var _tc: ToolContext
-
- # Create a new CompilerVisitor based on a module
- init(module: MMModule, tc: ToolContext)
- do
- _module = module
- _tc = tc
- end
-end
-
-# Where instr and decl are stored for a module
-# Note that this class is as badly designed as CompilerVisitor
-class CContext
- readable var _decls: Array[String] = new Array[String]
- readable var _instrs: Array[String] = new Array[String]
-
- fun append(c: CContext)
- do
- _instrs.append(c.decls)
- _instrs.append(c.instrs)
- end
-
- fun merge(c: CContext)
- do
- _decls.append(c.decls)
- _instrs.append(c.instrs)
- end
-
- init do end
-end
-
-redef class MMGlobalProperty
- # C symbol refering a method inocation
- fun meth_call: String
- do
- return "CALL_{intro.cname}"
- end
-
- # C symbol refering an attribure access
- fun attr_access: String
- do
- return "ATTR_{intro.cname}"
- end
-end
-
-redef class MMGlobalClass
- # C symbol refering the identifier of the class
- fun id_id: String
- do
- return "ID_{intro.name}"
- end
-
- # C symbol refering the color of the class (for subtype tests)
- fun color_id: String
- do
- return "COLOR_{intro.name}"
- end
-
- # C symbol refering the init table position of the class (for constructor linearization)
- fun init_table_pos_id: String
- do
- return "INIT_TABLE_POS_{intro.name}"
- end
-end
-
-redef class MMLocalProperty
- # Cacher result of cname
- var _cname_cache: nullable String
-
- # The mangled name of the method
- fun cname: String
- do
- var cname = _cname_cache
- if cname == null then
- cname = cmangle(module.name, local_class.name, name)
- _cname_cache = cname
- end
- return cname
- end
-
- # C macro used to get the function for the call of a super property
- fun super_meth_call: String
- do
- return "CALL_SUPER_{cname}"
- end
-end
-
nitlanguage / nit.git / blobdiff