/// <summary>
/// Swaps the current token with the new token, or does nothing if the stream is empty.
/// </summary>
public void Swap(TextUnit updatedText, TokenType updatedType = Token.DefaultTokenType)
{
if (!this.Done)
{
this.Tokens[this.Index] = new Token(updatedText, updatedType);
}
}
/// <summary>
/// Rewrites the type to the intermediate C# representation.
/// </summary>
internal void Rewrite()
{
if (this.TypeTokens.Count == 0)
{
return;
}
var text = this.RewriteTypeTokens();
this.RewrittenTextUnit = new TextUnit(text, this.TypeTokens.First().TextUnit.Line);
return;
}
/// <summary>
/// Rewrites a tuple, recursively.
/// </summary>
/// <param name="index">Index</param>
protected void RewriteTuple(ref int index)
{
var tupleIdx = index;
index++;
int tupleSize = 1;
bool expectsComma = false;
while (index < this.RewrittenStmtTokens.Count &&
this.RewrittenStmtTokens[index].Type != TokenType.RightParenthesis)
{
if (this.RewrittenStmtTokens[index].Type == TokenType.WhiteSpace ||
this.RewrittenStmtTokens[index].Type == TokenType.NewLine)
{
index++;
continue;
}
if ((!expectsComma &&
this.RewrittenStmtTokens[index].Type != TokenType.Identifier &&
this.RewrittenStmtTokens[index].Type != TokenType.This &&
this.RewrittenStmtTokens[index].Type != TokenType.True &&
this.RewrittenStmtTokens[index].Type != TokenType.False &&
this.RewrittenStmtTokens[index].Type != TokenType.Null &&
this.RewrittenStmtTokens[index].Type != TokenType.LeftParenthesis) ||
(expectsComma && this.RewrittenStmtTokens[index].Type != TokenType.Comma))
{
break;
}
if (this.RewrittenStmtTokens[index].Type == TokenType.Identifier ||
this.RewrittenStmtTokens[index].Type == TokenType.This ||
this.RewrittenStmtTokens[index].Type == TokenType.True ||
this.RewrittenStmtTokens[index].Type == TokenType.Null ||
this.RewrittenStmtTokens[index].Type == TokenType.False)
{
index++;
expectsComma = true;
}
else if (this.RewrittenStmtTokens[index].Type == TokenType.LeftParenthesis)
{
this.RewriteTuple(ref index);
index++;
expectsComma = true;
}
else if (this.RewrittenStmtTokens[index].Type == TokenType.Comma)
{
tupleSize++;
expectsComma = false;
index++;
}
}
if (tupleSize > 1)
{
var tupleStr = "Container.Create(";
var textUnit = new TextUnit(tupleStr, this.RewrittenStmtTokens[tupleIdx].TextUnit.Line);
this.RewrittenStmtTokens[tupleIdx] = new Token(textUnit);
}
else
{
this.RewrittenStmtTokens.RemoveAt(index);
this.RewrittenStmtTokens.RemoveAt(tupleIdx);
}
}
/// <summary>
/// Rewrites the cloneable collection in method call.
/// </summary>
protected void RewriteCloneableCollectionInMethodCall()
{
if (this.Parent.Machine == null || this.Parent.State == null ||
!(this.Parent.Machine.FunctionDeclarations.Any(val => val.Identifier.TextUnit.Text.
Equals(this.RewrittenStmtTokens[this.Index].TextUnit.Text))))
{
return;
}
this.Index++;
this.SkipWhiteSpaceTokens();
int counter = 0;
while (this.Index < this.RewrittenStmtTokens.Count)
{
if (this.RewrittenStmtTokens[this.Index].Type == TokenType.LeftParenthesis)
{
counter++;
}
else if (this.RewrittenStmtTokens[this.Index].Type == TokenType.RightParenthesis)
{
counter--;
}
if (counter == 0)
{
break;
}
if (this.Parent.Machine.FieldDeclarations.Any(val => val.Identifier.TextUnit.Text.Equals(
this.RewrittenStmtTokens[this.Index].TextUnit.Text)))
{
var field = this.Parent.Machine.FieldDeclarations.Find(val =>
val.Identifier.TextUnit.Text.Equals(this.RewrittenStmtTokens[this.Index].
TextUnit.Text)) as PFieldDeclaration;
if (field.Type.Type != PType.Tuple &&
field.Type.Type != PType.Seq &&
field.Type.Type != PType.Map)
{
return;
}
var textUnit = new TextUnit("(", this.RewrittenStmtTokens[this.Index].TextUnit.Line);
this.RewrittenStmtTokens.Insert(this.Index, new Token(textUnit));
this.Index++;
this.RewriteMemberIdentifier();
var cloneStr = ".Clone() as " + field.Type.GetRewrittenText() + ")";
textUnit = new TextUnit(cloneStr, this.RewrittenStmtTokens[this.Index].TextUnit.Line);
this.RewrittenStmtTokens.Insert(this.Index + 1, new Token(textUnit));
}
this.Index++;
}
}
/// <summary>
/// Returns a clone of the text unit.
/// </summary>
/// <param name="textUnit">TextUnit</param>
/// <returns>TextUnit</returns>
public static TextUnit Clone(TextUnit textUnit)
{
return(new TextUnit(textUnit.Text, textUnit.Line));
}
/// <summary>
/// Rewrites the cloneable payload.
/// </summary>
private void RewriteCloneablePayload()
{
if (this.Parent.Machine == null ||
!(this.Parent.Machine.FieldDeclarations.Any(val => val.Identifier.TextUnit.Text.
Equals(this.RewrittenStmtTokens[this.Index].TextUnit.Text))))
{
return;
}
var field = this.Parent.Machine.FieldDeclarations.Find(val => val.Identifier.TextUnit.Text.
Equals(this.RewrittenStmtTokens[this.Index].TextUnit.Text)) as PFieldDeclaration;
if (field.Type.Type != PType.Tuple &&
field.Type.Type != PType.Seq &&
field.Type.Type != PType.Map)
{
return;
}
var textUnit = new TextUnit("(", this.RewrittenStmtTokens[this.Index].TextUnit.Line);
this.RewrittenStmtTokens.Insert(this.Index, new Token(textUnit));
this.Index++;
var cloneStr = ".Clone() as " + field.Type.GetRewrittenText() + ")";
textUnit = new TextUnit(cloneStr, this.RewrittenStmtTokens[this.Index].TextUnit.Line);
if (this.Index + 1 == this.RewrittenStmtTokens.Count)
{
this.RewrittenStmtTokens.Add(new Token(textUnit));
}
else
{
this.RewrittenStmtTokens.Insert(this.Index + 1, new Token(textUnit));
}
}
/// <summary>
/// Returns a clone of the text unit.
/// </summary>
/// <param name="textUnit">TextUnit</param>
/// <returns>TextUnit</returns>
public static TextUnit Clone(TextUnit textUnit)
{
return new TextUnit(textUnit.Text, textUnit.Line);
}
/// <summary>
/// Concatenates the two text units, which are assumed to be adjacent.
/// </summary>
public static TextUnit Add(TextUnit first, TextUnit second)
{
// We call SkipWhiteSpaceAndCommentTokens() between some tokens so the first may not end right at the second.
Debug.Assert(first.Start + first.OriginalLength <= second.Start, "TextUnits overlap");
return(Create(first.Text + second.Text, first.OriginalLength + second.OriginalLength, first.Line, first.Start));
}
/// <summary>
/// Initializes a new instance of the <see cref="TextUnit"/> class.
/// </summary>
public TextUnit(string text, TextUnit other)
: this(text, other.Line, other.Start)
{
}
/// <summary>
/// Rewrites the machine type.
/// </summary>
protected void RewriteMachineType()
{
var textUnit = new TextUnit("MachineId", this.RewrittenStmtTokens[this.Index].TextUnit.Line);
this.RewrittenStmtTokens[this.Index] = new Token(textUnit, this.RewrittenStmtTokens[this.Index].Type);
}