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//
// SourceMethodBuilder.cs
//
// Authors:
// Martin Baulig (martin@ximian.com)
// Marek Safar (marek.safar@gmail.com)
//
// (C) 2002 Ximian, Inc. http://www.ximian.com
// Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections.Generic;
namespace Mono.CompilerServices.SymbolWriter
{
public class SourceMethodBuilder
{
List<LocalVariableEntry> _locals;
List<CodeBlockEntry> _blocks;
List<ScopeVariable> _scope_vars;
Stack<CodeBlockEntry> _block_stack;
readonly List<LineNumberEntry> method_lines;
readonly ICompileUnit _comp_unit;
readonly int ns_id;
readonly IMethodDef method;
public SourceMethodBuilder (ICompileUnit comp_unit)
{
this._comp_unit = comp_unit;
method_lines = new List<LineNumberEntry> ();
}
public SourceMethodBuilder (ICompileUnit comp_unit, int ns_id, IMethodDef method)
: this (comp_unit)
{
this.ns_id = ns_id;
this.method = method;
}
public void MarkSequencePoint (int offset, SourceFileEntry file, int line, int column, bool is_hidden)
{
int file_idx = file != null ? file.Index : 0;
var lne = new LineNumberEntry (file_idx, line, column, offset, is_hidden);
if (method_lines.Count > 0) {
var prev = method_lines[method_lines.Count - 1];
//
// Same offset cannot be used for multiple lines
//
if (prev.Offset == offset) {
//
// Use the new location because debugger will adjust
// the breakpoint to next line with sequence point
//
if (LineNumberEntry.LocationComparer.Default.Compare (lne, prev) > 0)
method_lines[method_lines.Count - 1] = lne;
return;
}
}
method_lines.Add (lne);
}
public void StartBlock (CodeBlockEntry.Type type, int start_offset)
{
if (_block_stack == null) {
_block_stack = new Stack<CodeBlockEntry> ();
}
if (_blocks == null)
_blocks = new List<CodeBlockEntry> ();
int parent = CurrentBlock != null ? CurrentBlock.Index : -1;
CodeBlockEntry block = new CodeBlockEntry (
_blocks.Count + 1, parent, type, start_offset);
_block_stack.Push (block);
_blocks.Add (block);
}
public void EndBlock (int end_offset)
{
CodeBlockEntry block = (CodeBlockEntry) _block_stack.Pop ();
block.Close (end_offset);
}
public CodeBlockEntry[] Blocks {
get {
if (_blocks == null)
return new CodeBlockEntry [0];
CodeBlockEntry[] retval = new CodeBlockEntry [_blocks.Count];
_blocks.CopyTo (retval, 0);
return retval;
}
}
public CodeBlockEntry CurrentBlock {
get {
if ((_block_stack != null) && (_block_stack.Count > 0))
return (CodeBlockEntry) _block_stack.Peek ();
else
return null;
}
}
public LocalVariableEntry[] Locals {
get {
if (_locals == null)
return new LocalVariableEntry [0];
else {
return _locals.ToArray ();
}
}
}
public ICompileUnit SourceFile {
get {
return _comp_unit;
}
}
public void AddLocal (int index, string name)
{
if (_locals == null)
_locals = new List<LocalVariableEntry> ();
int block_idx = CurrentBlock != null ? CurrentBlock.Index : 0;
_locals.Add (new LocalVariableEntry (index, name, block_idx));
}
public ScopeVariable[] ScopeVariables {
get {
if (_scope_vars == null)
return new ScopeVariable [0];
return _scope_vars.ToArray ();
}
}
public void AddScopeVariable (int scope, int index)
{
if (_scope_vars == null)
_scope_vars = new List<ScopeVariable> ();
_scope_vars.Add (
new ScopeVariable (scope, index));
}
public void DefineMethod (MonoSymbolFile file)
{
DefineMethod (file, method.Token);
}
public void DefineMethod (MonoSymbolFile file, int token)
{
MethodEntry entry = new MethodEntry (
file, _comp_unit.Entry, token, ScopeVariables,
Locals, method_lines.ToArray (), Blocks, null, MethodEntry.Flags.ColumnsInfoIncluded, ns_id);
file.AddMethod (entry);
}
}
}
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