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ModuleWriter.cs

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/*----------------------------------------------------------

This Source Code Form is subject to the terms of the

Mozilla Public License, v.2.0. If a copy of the MPL

was not distributed with this file, You can obtain one

at http://mozilla.org/MPL/2.0/.

----------------------------------------------------------*/

using System;

using System.Collections.Generic;

using System.IO;

using ScriptEngine.Environment;

using ScriptEngine.Machine;

namespace ScriptEngine.Compiler

{

public class ModuleWriter

{

readonly CompilerService _compiler;

public ModuleWriter(CompilerService compilerService)

{

_compiler = compilerService;

}

public void Write(TextWriter output, ICodeSource source)

{

var module = _compiler.Compile(source);

WriteImage(output, module);

}

public void Write(TextWriter output, ModuleImage module)

{

WriteImage(output, module);

}

private void WriteImage(TextWriter output, ModuleImage module)

{

output.WriteLine(".loadAt: {0}", module.LoadAddress);

output.WriteLine(".variableFrame:");

module.Variables.ForEach(x=>output.WriteLine(" " + x));

output.WriteLine(".constants");

for (int i = 0; i < module.Constants.Count; i++)

{

var item = module.Constants[i];

output.WriteLine(

String.Format("{0,-3}:type: {1}, val: {2}",

i,

Enum.GetName(typeof(DataType), item.Type),

item.Presentation));

}

output.WriteLine(".code");

for (int i = 0; i < module.Code.Count; i++)

{

var item = module.Code[i];

output.WriteLine(

String.Format("{0,-3}:({1,-10}{2,3})",

i,

Enum.GetName(typeof(OperationCode), item.Code),

item.Argument));

}

output.WriteLine(".procedures");

foreach (var item in module.Methods)

{

WriteMethodDefinition(output, item);

}

output.WriteLine(".varmap");

WriteSymbolMap(output, module.VariableRefs);

output.WriteLine(".procmap");

WriteSymbolMap(output, module.MethodRefs);

output.WriteLine(".moduleEntry");

output.WriteLine(module.EntryMethodIndex.ToString());

output.WriteLine(".exports");

WriteExports(output, module.ExportedProperties);

WriteExports(output, module.ExportedMethods);

}

private void WriteSymbolMap(TextWriter output, IList<SymbolBinding> map)

{

for (int i = 0; i < map.Count; i++)

{

var item = map[i];

output.Write(string.Format("{0,-3}:({1},{2})\n", i, item.ContextIndex, item.CodeIndex));

}

}

private void WriteAnnotationsList(TextWriter output, AnnotationDefinition[] annotations)

{

output.WriteLine(".annotations [");

foreach (var annotation in annotations)

{

output.Write(" {0}", annotation.Name);

if (annotation.ParamCount != 0)

{

var delimiter = ": ";

foreach (var parameter in annotation.Parameters)

{

output.Write(delimiter);

output.Write(parameter);

delimiter = ", ";

}

}

output.WriteLine("");

}

output.WriteLine("]");

}

private void WriteMethodDefinition(TextWriter output, MethodDescriptor item)

{

output.Write(item.Signature.IsFunction ? "Func " : "Proc ");

output.Write(string.Format("{0} entryPoint: {1}, frameSize:{2}\n",

item.Signature.Name,

item.EntryPoint,

item.Variables.Count));

if (item.Signature.AnnotationsCount != 0)

{

WriteAnnotationsList(output, item.Signature.Annotations);

}

output.Write(".args {0}\n", item.Signature.ArgCount);

if (item.Signature.Params != null)

{

for (int i = 0; i < item.Signature.Params.Length; i++)

{

output.Write("{0,-3}: ByVal={1}", i, item.Signature.Params[i].IsByValue);

if (item.Signature.Params[i].HasDefaultValue)

{

output.Write(" defValue: {0}\n", item.Signature.Params[i].DefaultValueIndex);

}

else

{

output.WriteLine();

}

}

}

output.WriteLine(".variables [");

item.Variables.ForEach(x=>output.WriteLine(" " + x));

output.WriteLine("]");

}

private void WriteExports(TextWriter output, IList<ExportedSymbol> exports)

{

for (int i = 0; i < exports.Count; i++)

{

output.WriteLine(String.Format("{0}:{1,-3}", exports[i].SymbolicName, exports[i].Index));

}

}

}

}