public void skipMultiLineComment()
{
int start = 0;
Loc loc = new Loc();
char ch;
string comment;
if (extra.comments.Any())
{
start = index - 2;
loc = new Loc()
{
start = new Loc.Position()
{
line = lineNumber,
column = index - lineStart - 2
}
};
}
while (index < length)
{
ch = source.ToCharArray()[index];
if (isLineTerminator(ch))
{
if (ch == 0x0D && source.ToCharArray()[index + 1] == 0x0A)
{
++index;
}
hasLineTerminator = true;
++lineNumber;
++index;
lineStart = index;
}
else if (ch == 0x2A)
{
// Block comment ends with "*/".
if (source.ToCharArray()[index + 1] == 0x2F)
{
++index;
++index;
if (extra.comments.Any())
{
comment = source.Substring(start + 2, index - 2);
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
};
addComment("Block", comment, start, index, loc);
}
return;
}
++index;
}
else
{
++index;
}
}
// Ran off the end of the file - the whole thing is a comment
if (extra.comments.Any())
{
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
};
comment = source.Substring(start + 2, index);
addComment("Block", comment, start, index, loc);
}
tolerateUnexpectedToken();
}
public void skipSingleLineComment(int offset)
{
int start;
Loc loc;
char ch;
string comment;
start = index - offset;
loc = new Loc()
{
start = new Loc.Position()
{
line = lineNumber,
column = index - lineStart - offset
}
};
while (index < length)
{
ch = source.ToCharArray()[index];
++index;
if (isLineTerminator(ch))
{
hasLineTerminator = true;
if (extra.comments.Any())
{
comment = source.Substring(start + offset, index - 1);
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart - 1
};
addComment("Line", comment, start, index - 1, loc);
}
if (ch == 13 && source.ToCharArray()[index] == 10)
{
++index;
}
++lineNumber;
lineStart = index;
return;
}
}
if (extra.comments.Any())
{
comment = source.Substring(start + offset, index);
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
};
addComment("Line", comment, start, index, loc);
}
}
public Token collectToken()
{
Loc loc;
Token token;
string value;
Token entry;
loc = new Loc()
{
start = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
}
};
token = advance();
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
};
if (token.type != TokenType.EOF)
{
value = source.Substring(token.start, token.end - token.start);
entry = new Token
{
type = token.type,
value = value,
range = new Token.TokenRange() { start = token.start, end = token.end },
loc = loc,
lineNumber = lineNumber,
start = loc.start.column,
end = loc.end.column,
};
if (token.regex != null)
{
entry.regex = new Regex()
{
pattern = token.regex.pattern,
flags = token.regex.flags
};
}
extra.tokens.Add(entry);
}
return token;
}
// ECMA-262 11.4 Comments
public void addComment(string type, string value, int start, int end, Loc loc)
{
Comment comment;
// assert(typeof start == "number", "Comment must have valid position");
state.lastCommentStart = start;
comment = new Comment()
{
type = type,
value = value
};
if (extra.range != null)
{
comment.range = new Range() { Start = start, End = end };
}
if (extra.loc != null)
{
comment.loc = loc;
}
extra.comments.Add(comment);
if (extra.attachComment)
{
extra.leadingComments.Add(comment);
extra.trailingComments.Add(comment);
}
}
public Token collectRegex()
{
int pos;
Loc loc;
Token regex;
Token token;
skipComment();
pos = index;
loc = new Loc()
{
start = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
}
};
regex = scanRegExp();
loc.end = new Loc.Position()
{
line = lineNumber,
column = index - lineStart
};
/* istanbul ignore next */
if (!extra.tokenize)
{
// Pop the previous token, which is likely "/" or "/="
if (extra.tokens.Count > 0)
{
token = extra.tokens[extra.tokens.Count - 1];
// if (token.range] == pos && token.type == TokenType.Punctuator)
{
if (token.value == "/" || token.value == "/=")
{
extra.tokens.Remove(extra.tokens.Last());
}
}
}
extra.tokens.Add(new Token()
{
type = TokenType.RegularExpression,
value = regex.literal,
regex = regex.regex,
range = new Token.TokenRange() { start = pos, end = index },
loc = loc
});
}
return regex;
}
