mirror of
https://github.com/golang/go
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124 lines
3.0 KiB
Go
Executable File
124 lines
3.0 KiB
Go
Executable File
// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package Universe
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import (
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"array";
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AST "ast";
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)
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var (
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Scope *AST.Scope;
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Types array.Array;
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// internal types
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Void_typ,
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Bad_typ,
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Nil_typ,
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// basic types
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Bool_typ,
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Uint8_typ,
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Uint16_typ,
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Uint32_typ,
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Uint64_typ,
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Int8_typ,
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Int16_typ,
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Int32_typ,
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Int64_typ,
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Float32_typ,
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Float64_typ,
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Float80_typ,
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String_typ,
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Integer_typ,
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// convenience types
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Byte_typ,
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Uint_typ,
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Int_typ,
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Float_typ,
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Uintptr_typ *AST.Type;
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True_obj,
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False_obj,
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Iota_obj,
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Nil_obj *AST.Object;
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)
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func declObj(kind int, ident string, typ *AST.Type) *AST.Object {
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obj := AST.NewObject(-1 /* no source pos */, kind, ident);
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obj.Typ = typ;
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if kind == AST.TYPE && typ.Obj == nil {
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typ.Obj = obj; // set primary type object
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}
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Scope.Insert(obj);
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return obj
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}
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func declType(form int, ident string, size int) *AST.Type {
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typ := AST.NewType(-1 /* no source pos */, form);
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typ.Size = size;
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return declObj(AST.TYPE, ident, typ).Typ;
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}
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func register(typ *AST.Type) *AST.Type {
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typ.Ref = Types.Len();
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Types.Push(typ);
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return typ;
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}
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func init() {
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Scope = AST.NewScope(nil); // universe has no parent
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Types.Init(32);
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// Interal types
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Void_typ = AST.NewType(-1 /* no source pos */, AST.VOID);
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AST.Universe_void_typ = Void_typ;
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Bad_typ = AST.NewType(-1 /* no source pos */, AST.BADTYPE);
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Nil_typ = AST.NewType(-1 /* no source pos */, AST.NIL);
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// Basic types
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Bool_typ = register(declType(AST.BOOL, "bool", 1));
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Uint8_typ = register(declType(AST.UINT, "uint8", 1));
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Uint16_typ = register(declType(AST.UINT, "uint16", 2));
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Uint32_typ = register(declType(AST.UINT, "uint32", 4));
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Uint64_typ = register(declType(AST.UINT, "uint64", 8));
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Int8_typ = register(declType(AST.INT, "int8", 1));
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Int16_typ = register(declType(AST.INT, "int16", 2));
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Int32_typ = register(declType(AST.INT, "int32", 4));
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Int64_typ = register(declType(AST.INT, "int64", 8));
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Float32_typ = register(declType(AST.FLOAT, "float32", 4));
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Float64_typ = register(declType(AST.FLOAT, "float64", 8));
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Float80_typ = register(declType(AST.FLOAT, "float80", 10));
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String_typ = register(declType(AST.STRING, "string", 8));
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Integer_typ = register(declType(AST.INTEGER, "integer", 8));
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// All but 'byte' should be platform-dependent, eventually.
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Byte_typ = register(declType(AST.UINT, "byte", 1));
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Uint_typ = register(declType(AST.UINT, "uint", 4));
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Int_typ = register(declType(AST.INT, "int", 4));
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Float_typ = register(declType(AST.FLOAT, "float", 4));
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Uintptr_typ = register(declType(AST.UINT, "uintptr", 8));
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// Predeclared constants
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True_obj = declObj(AST.CONST, "true", Bool_typ);
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False_obj = declObj(AST.CONST, "false", Bool_typ);
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Iota_obj = declObj(AST.CONST, "iota", Int_typ);
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Nil_obj = declObj(AST.CONST, "nil", Nil_typ);
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// Builtin functions
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declObj(AST.BUILTIN, "len", Void_typ);
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declObj(AST.BUILTIN, "new", Void_typ);
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declObj(AST.BUILTIN, "panic", Void_typ);
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declObj(AST.BUILTIN, "print", Void_typ);
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// scope.Print();
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}
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