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//-----------------------------------------------------------------------------
//
// Copyright (C) Microsoft Corporation. All Rights Reserved.
//
//-----------------------------------------------------------------------------
using System;
using System.IO;
using System.Xml;
using System.Collections.Generic;
using Microsoft.Contracts;
using Cci = System.Compiler;
namespace Microsoft.Boogie
{
public class XmlSink {
string! filename;
[Rep] XmlWriter wr;
public bool IsOpen {
get { return wr != null; }
}
public XmlSink(string! filename) {
this.filename = filename;
}
/// <summary>
/// Returns null on success, in which case the caller should eventually invoke Close.
/// Returns an error string on failure.
/// </summary>
public string Open()
modifies this.*;
ensures IsOpen;
{
if (wr != null) {
Close();
}
expose (this) {
XmlWriterSettings settings = new XmlWriterSettings();
settings.Indent = true;
wr = XmlWriter.Create(filename, settings);
wr.WriteStartDocument();
wr.WriteStartElement("boogie");
wr.WriteAttributeString("version", CommandLineOptions.VersionNumber);
wr.WriteAttributeString("commandLine", Environment.CommandLine);
}
return null; // success
}
public void Close()
modifies this.*;
{
if (wr != null) {
expose (this) {
wr.WriteEndDocument();
wr.Close();
wr = null;
}
}
}
const string DateTimeFormatString = "u";
public void WriteStartMethod(string! methodName, DateTime startTime)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("method");
wr.WriteAttributeString("name", methodName);
wr.WriteAttributeString("startTime", startTime.ToString(DateTimeFormatString));
}
}
public void WriteEndMethod(string! outcome, DateTime endTime, TimeSpan elapsed)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("conclusion");
wr.WriteAttributeString("endTime", endTime.ToString(DateTimeFormatString));
wr.WriteAttributeString("duration", elapsed.TotalSeconds.ToString());
wr.WriteAttributeString("outcome", outcome);
wr.WriteEndElement(); // outcome
wr.WriteEndElement(); // method
}
}
public void WriteError(string! message, IToken! errorToken, IToken relatedToken, BlockSeq trace)
requires IsOpen && (trace == null || Owner.Different(this, trace));
modifies this.*, errorToken.*, relatedToken.*, trace.*;
ensures IsOpen;
{
assert wr != null;
expose(this){
wr.WriteStartElement("error");
wr.WriteAttributeString("message", message);
WriteTokenAttributes(errorToken);
if (relatedToken != null)
{
wr.WriteStartElement("related");
WriteTokenAttributes(relatedToken);
wr.WriteEndElement();
}
if (trace != null)
{
wr.WriteStartElement("trace");
{
foreach (object bo in trace)
invariant wr != null;
{
assume bo is Block;
Block b = (Block)bo;
wr.WriteStartElement("traceNode");
{
WriteTokenAttributes(b.tok);
wr.WriteAttributeString("label", b.Label);
}
wr.WriteEndElement();
}
wr.WriteEndElement();
}
}
wr.WriteEndElement();
}
}
public void WriteError(string! message, Cci.Node! offendingNode, BlockSeq trace)
requires IsOpen && Owner.Different(this, offendingNode);
requires trace == null || Owner.Different(this, trace);
modifies this.*, offendingNode.*, trace.*;
ensures IsOpen;
{
assert wr != null;
expose(this){
wr.WriteStartElement("error");
wr.WriteAttributeString("message", message);
WriteTokenAttributes(offendingNode);
if (trace != null)
{
wr.WriteStartElement("trace");
{
foreach (object bo in trace)
invariant wr != null;
{
assume bo is Block;
Block b = (Block)bo;
wr.WriteStartElement("traceNode");
{
this.WriteTokenAttributes(b.tok);
wr.WriteAttributeString("label", b.Label);
}
wr.WriteEndElement();
}
wr.WriteEndElement();
}
}
wr.WriteEndElement();
}
}
[Inside]
private void WriteTokenAttributes(IToken tok)
requires wr != null && wr.IsPeerConsistent;
modifies this.0, wr.*;
{
if (tok != null && tok.filename != null)
{
wr.WriteAttributeString("file", tok.filename);
wr.WriteAttributeString("line", tok.line.ToString());
wr.WriteAttributeString("column", tok.col.ToString());
}
}
[Inside]
private void WriteTokenAttributes(Cci.Node! node)
requires wr != null && wr.IsPeerConsistent;
modifies this.0, wr.*;
{
assert wr != null;
if (node.SourceContext.Document != null)
{
wr.WriteAttributeString("file", node.SourceContext.Document.Name);
wr.WriteAttributeString("line", node.SourceContext.StartLine.ToString());
wr.WriteAttributeString("column", node.SourceContext.StartColumn.ToString());
}
}
public void WriteStartInference(string! inferenceName)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("inference");
wr.WriteAttributeString("name", inferenceName);
}
}
public void WriteEndInference()
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteEndElement(); // inference
}
}
public void WriteContractParaAssignment(string! varName, string val)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("assignment");
wr.WriteAttributeString("name", varName);
wr.WriteAttributeString("value", val);
wr.WriteEndElement();
}
}
public void WriteStartFile(string! filename)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("file");
wr.WriteAttributeString("name", filename);
}
}
public void WriteEndFile()
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteEndElement();
}
}
public void WriteFileFragment(string! fragment)
requires IsOpen;
modifies this.*;
ensures IsOpen;
{
assert wr != null;
expose (this) {
wr.WriteStartElement("fileFragment");
wr.WriteAttributeString("name", fragment);
wr.WriteEndElement();
}
}
}
public class XmlFileScope : IDisposable {
[Peer] [SpecPublic] XmlSink sink;
[Captured]
public XmlFileScope(XmlSink? sink, string! filename)
requires sink != null ==> sink.IsOpen;
modifies sink.*;
{
if (sink != null) {
sink.WriteStartFile(filename); // invoke this method while "sink" is still peer consistent
Owner.AssignSame(this, sink);
this.sink = sink;
}
}
public void Dispose()
modifies this.*, sink.*;
{
if (sink != null) {
assume sink.IsOpen;
sink.WriteEndFile();
}
}
}
}
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