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Added member provider to give the completion engine more context from 

outside.
newNRvisualizers
Mike Krüger 14 years ago
parent
578bb6c062
commit
6a9564d048
3 changed files with 173 additions and 100 deletions
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  1. 227
      ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngineBase.cs
  2. 40
      ICSharpCode.NRefactory.CSharp/Completion/IMemberProvider.cs
  3. 6
      ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj

227
ICSharpCode.NRefactory.CSharp/Completion/CSharpCompletionEngineBase.cs
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@ -85,113 +85,20 @@ namespace ICSharpCode.NRefactory.CSharp.Completion @@ -85,113 +85,20 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
this.CSharpParsedFile = parsedFile;
}
IUnresolvedTypeDefinition FindInnerType (IUnresolvedTypeDefinition parent, TextLocation location)
{
if (parent == null)
return null;
var currentType = parent;
foreach (var type in parent.NestedTypes) {
if (type.Region.Begin < location && location < type.Region.End)
currentType = FindInnerType (type, location);
}
return currentType;
}
bool IsInsideType (IUnresolvedEntity currentType, TextLocation location)
{
int startOffset = document.GetOffset (currentType.Region.Begin);
int endOffset = document.GetOffset (location);
bool foundEndBracket = false;
var bracketStack = new Stack<char> ();
bool isInString = false, isInChar = false;
bool isInLineComment = false, isInBlockComment = false;
for (int i = startOffset; i < endOffset; i++) {
char ch = document.GetCharAt (i);
switch (ch) {
case '(':
case '[':
case '{':
if (!isInString && !isInChar && !isInLineComment && !isInBlockComment)
bracketStack.Push (ch);
break;
case ')':
case ']':
case '}':
if (!isInString && !isInChar && !isInLineComment && !isInBlockComment)
if (bracketStack.Count > 0)
bracketStack.Pop ();
break;
case '\r':
case '\n':
isInLineComment = false;
break;
case '/':
if (isInBlockComment) {
if (i > 0 && document.GetCharAt (i - 1) == '*')
isInBlockComment = false;
} else if (!isInString && !isInChar && i + 1 < document.TextLength) {
char nextChar = document.GetCharAt (i + 1);
if (nextChar == '/')
isInLineComment = true;
if (!isInLineComment && nextChar == '*')
isInBlockComment = true;
}
break;
case '"':
if (!(isInChar || isInLineComment || isInBlockComment))
isInString = !isInString;
break;
case '\'':
if (!(isInString || isInLineComment || isInBlockComment))
isInChar = !isInChar;
break;
default :
break;
}
}
return bracketStack.Any (t => t == '{');
public IMemberProvider MemberProvider {
get;
set;
}
protected void SetOffset (int offset)
{
Reset ();
this.offset = offset;
this.location = document.GetLocation (offset);
this.currentType = null;
foreach (var type in CSharpParsedFile.TopLevelTypeDefinitions) {
if (type.Region.Begin < location)
currentType = type;
}
currentType = FindInnerType (currentType, location);
// location is beyond last reported end region, now we need to check, if the end region changed
if (currentType != null && currentType.Region.End < location) {
if (!IsInsideType (currentType, location))
currentType = null;
}
this.currentMember = null;
if (this.currentType != null) {
foreach (var member in currentType.Members) {
if (member.Region.Begin < location && (currentMember == null || currentMember.Region.Begin < member.Region.Begin))
currentMember = member;
}
}
// location is beyond last reported end region, now we need to check, if the end region changed
// NOTE: Enums are a special case, there the "last" field needs to be treated as current member
if (currentMember != null && currentMember.Region.End < location && currentType.Kind != TypeKind.Enum) {
if (!IsInsideType (currentMember, location))
currentMember = null;
}
var stack = GetBracketStack (GetMemberTextToCaret ().Item1);
if (stack.Count == 0)
currentMember = null;
var provider = MemberProvider ?? new DefaultMemberProvider (this);
provider.GetCurrentMembers (offset, out currentType, out currentMember);
}
#region Context helper methods
@ -558,5 +465,127 @@ namespace ICSharpCode.NRefactory.CSharp.Completion @@ -558,5 +465,127 @@ namespace ICSharpCode.NRefactory.CSharp.Completion
}
#endregion
class DefaultMemberProvider : IMemberProvider
{
CSharpCompletionEngineBase engine;
public DefaultMemberProvider (CSharpCompletionEngineBase engine)
{
this.engine = engine;
}
public void GetCurrentMembers (int offset, out IUnresolvedTypeDefinition currentType, out IUnresolvedMember currentMember)
{
var document = engine.document;
var location = engine.location;
currentType = null;
foreach (var type in engine.CSharpParsedFile.TopLevelTypeDefinitions) {
if (type.Region.Begin < location)
currentType = type;
}
currentType = FindInnerType (currentType, location);
// location is beyond last reported end region, now we need to check, if the end region changed
if (currentType != null && currentType.Region.End < location) {
if (!IsInsideType (currentType, location))
currentType = null;
}
currentMember = null;
if (currentType != null) {
foreach (var member in currentType.Members) {
if (member.Region.Begin < location && (currentMember == null || currentMember.Region.Begin < member.Region.Begin))
currentMember = member;
}
}
// location is beyond last reported end region, now we need to check, if the end region changed
// NOTE: Enums are a special case, there the "last" field needs to be treated as current member
if (currentMember != null && currentMember.Region.End < location && currentType.Kind != TypeKind.Enum) {
if (!IsInsideType (currentMember, location))
currentMember = null;
}
var stack = engine.GetBracketStack (engine.GetMemberTextToCaret ().Item1);
if (stack.Count == 0)
currentMember = null;
}
IUnresolvedTypeDefinition FindInnerType (IUnresolvedTypeDefinition parent, TextLocation location)
{
if (parent == null)
return null;
var currentType = parent;
foreach (var type in parent.NestedTypes) {
if (type.Region.Begin < location && location < type.Region.End)
currentType = FindInnerType (type, location);
}
return currentType;
}
bool IsInsideType (IUnresolvedEntity currentType, TextLocation location)
{
var document = engine.document;
int startOffset = document.GetOffset (currentType.Region.Begin);
int endOffset = document.GetOffset (location);
bool foundEndBracket = false;
var bracketStack = new Stack<char> ();
bool isInString = false, isInChar = false;
bool isInLineComment = false, isInBlockComment = false;
for (int i = startOffset; i < endOffset; i++) {
char ch = document.GetCharAt (i);
switch (ch) {
case '(':
case '[':
case '{':
if (!isInString && !isInChar && !isInLineComment && !isInBlockComment)
bracketStack.Push (ch);
break;
case ')':
case ']':
case '}':
if (!isInString && !isInChar && !isInLineComment && !isInBlockComment)
if (bracketStack.Count > 0)
bracketStack.Pop ();
break;
case '\r':
case '\n':
isInLineComment = false;
break;
case '/':
if (isInBlockComment) {
if (i > 0 && document.GetCharAt (i - 1) == '*')
isInBlockComment = false;
} else if (!isInString && !isInChar && i + 1 < document.TextLength) {
char nextChar = document.GetCharAt (i + 1);
if (nextChar == '/')
isInLineComment = true;
if (!isInLineComment && nextChar == '*')
isInBlockComment = true;
}
break;
case '"':
if (!(isInChar || isInLineComment || isInBlockComment))
isInString = !isInString;
break;
case '\'':
if (!(isInString || isInLineComment || isInBlockComment))
isInChar = !isInChar;
break;
default :
break;
}
}
return bracketStack.Any (t => t == '{');
}
}
}
}

40
ICSharpCode.NRefactory.CSharp/Completion/IMemberProvider.cs
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@ -0,0 +1,40 @@ @@ -0,0 +1,40 @@
//
// IMemberProvider.cs
//
// Author:
// Mike Krüger <mkrueger@xamarin.com>
//
// Copyright (c) 2012 Xamarin Inc.
//
// 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;
using System.Collections.Generic;
using ICSharpCode.NRefactory.TypeSystem;
using ICSharpCode.NRefactory.Editor;
using ICSharpCode.NRefactory.CSharp.TypeSystem;
using System.Linq;
namespace ICSharpCode.NRefactory.CSharp.Completion
{
public interface IMemberProvider
{
void GetCurrentMembers (int offset, out IUnresolvedTypeDefinition currentType, out IUnresolvedMember currentMember);
}
}

6
ICSharpCode.NRefactory.CSharp/ICSharpCode.NRefactory.CSharp.csproj
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@ -1,4 +1,4 @@ @@ -1,4 +1,4 @@
<?xml version="1.0" encoding="utf-8"?>
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" DefaultTargets="Build">
<PropertyGroup>
<ProjectGuid>{53DCA265-3C3C-42F9-B647-F72BA678122B}</ProjectGuid>
@ -44,6 +44,9 @@ @@ -44,6 +44,9 @@
<CheckForOverflowUnderflow>False</CheckForOverflowUnderflow>
<DefineConstants>TRACE;FULL_AST</DefineConstants>
</PropertyGroup>
<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
<DebugType>none</DebugType>
</PropertyGroup>
<ItemGroup>
<Reference Include="System" />
<Reference Include="System.Core">
@ -317,6 +320,7 @@ @@ -317,6 +320,7 @@
<Compile Include="Completion\CSharpCompletionEngine.cs" />
<Compile Include="Completion\CSharpCompletionEngineBase.cs" />
<Compile Include="Completion\CSharpParameterCompletionEngine.cs" />
<Compile Include="Completion\IMemberProvider.cs" />
</ItemGroup>
<ItemGroup>
<ProjectReference Include="..\ICSharpCode.NRefactory\ICSharpCode.NRefactory.csproj">

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