/Dependencies/boo/src/Boo.Lang.Compiler/Steps/MacroCompiler.cs
C# | 125 lines | 84 code | 16 blank | 25 comment | 7 complexity | 92fcef133fd82d540fd33a1847d6f253 MD5 | raw file
Possible License(s): GPL-2.0
- #region license
- // Copyright (c) 2003, 2004, 2005 Rodrigo B. de Oliveira (rbo@acm.org)
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without modification,
- // are permitted provided that the following conditions are met:
- //
- // * Redistributions of source code must retain the above copyright notice,
- // this list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright notice,
- // this list of conditions and the following disclaimer in the documentation
- // and/or other materials provided with the distribution.
- // * Neither the name of Rodrigo B. de Oliveira nor the names of its
- // contributors may be used to endorse or promote products derived from this
- // software without specific prior written permission.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
- // ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
- // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- // THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- #endregion
- using System;
- using Boo.Lang.Compiler.Ast;
- using Boo.Lang.Compiler.MetaProgramming;
- using Boo.Lang.Compiler.TypeSystem;
- namespace Boo.Lang.Compiler.Steps
- {
- class MacroCompiler : AbstractCompilerComponent
- {
- private static readonly object CachedTypeAnnotation = new object();
- public MacroCompiler(CompilerContext context)
- {
- Initialize(context);
- }
- public Type Compile(InternalClass macro)
- {
- return Compile(macro.TypeDefinition);
- }
- private Type Compile(TypeDefinition node)
- {
- Type type = CachedType(node);
- if (type != null) return type;
- if (AlreadyCompiled(node)) return null;
- Type compiledType = RunCompiler(node);
- CacheType(node, compiledType);
- return compiledType;
- }
- private Type RunCompiler(TypeDefinition node)
- {
- TraceInfo("Compiling macro '{0}'", node.FullName);
- CompilerContext result = Compilation.compile_(ModuleFor(node));
- if (0 == result.Errors.Count)
- {
- TraceInfo("Macro '{0}' successfully compiled to '{1}'", node.FullName, result.GeneratedAssembly);
- return result.GeneratedAssembly.GetType(node.FullName);
- }
- ReportErrors(result.Errors);
- return null;
- }
- private void TraceInfo(string format, params object[] args)
- {
- Context.TraceInfo(format, args);
- }
- private Module ModuleFor(TypeDefinition node)
- {
- Module m = new Module();
- m.Namespace = ClearClone(node.EnclosingModule.Namespace);
- m.Name = node.Name;
- foreach (Import i in node.EnclosingModule.Imports)
- {
- m.Imports.Add(ClearClone(i));
- }
- m.Members.Add(ClearClone(node));
- return m;
- }
- private T ClearClone<T>(T node) where T: Node
- {
- if (node == null) return null;
- T clone = (T)node.CloneNode();
- clone.ClearTypeSystemBindings();
- return clone;
- }
-
- private void ReportErrors(CompilerErrorCollection errors)
- {
- foreach (CompilerError e in errors)
- {
- this.Errors.Add(e);
- }
- }
- private static void CacheType(TypeDefinition node, Type type)
- {
- node[CachedTypeAnnotation] = type;
- }
- private static Type CachedType(TypeDefinition node)
- {
- return node[CachedTypeAnnotation] as System.Type;
- }
- private static bool AlreadyCompiled(TypeDefinition node)
- {
- return node.ContainsAnnotation(CachedTypeAnnotation);
- }
- }
- }