/// <summary>
/// run step 123.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
/*
* [
* name | pages | author
* 'c#' | 150 | 'microsoft'
* 'ruby' | 140 | 'matz'
* 'fluent' | 100 | 'codehelix'
* ];
* [
* name | pages | author
* 'c#' , 150 , 'microsoft'
* 'ruby' , 140 , 'matz'
* 'fluent' , 100 , 'codehelix'
* ];
*/
// 1. Move past "["
_tokenIt.Advance(1, true);
var columnNames = new List <string>();
var token = _tokenIt.NextToken.Token;
while (!Token.IsNewLine(token) && !_tokenIt.IsEnded)
{
// Expect column name.
string columnName = _tokenIt.ExpectId(false);
columnNames.Add(columnName);
_tokenIt.Advance(1, false);
// "|" pipe to separate column names.
if (_tokenIt.NextToken.Token == Tokens.Pipe)
{
_tokenIt.Advance(1, false);
}
else if (_tokenIt.NextToken.Token != Tokens.NewLine)
{
throw _tokenIt.BuildSyntaxExpectedException("| or new line");
}
token = _tokenIt.NextToken.Token;
}
if (_tokenIt.IsEnded)
{
throw _tokenIt.BuildEndOfScriptException();
}
// Hit new line?
_tokenIt.Advance();
var records = new List <List <Tuple <string, Expr> > >();
var record = new List <Tuple <string, Expr> >();
int colIndex = 0;
Token firstColumnDataDelimiter = null;
// Build up all the records.
while (token != Tokens.RightBracket && !_tokenIt.IsEnded)
{
// 1. Get the column value: 'C#'
var exp = _parser.ParseExpression(_endTokens, true, passNewLine: false);
string colName = columnNames[colIndex];
record.Add(new Tuple <string, Expr>(colName, exp));
// 2. Is the next one a | or new line ?
//_tokenIt.Advance(1, false);
token = _tokenIt.NextToken.Token;
// 3. If "|" or "," it separates expression/column values.
if (firstColumnDataDelimiter == null && token == Tokens.Pipe || token == Tokens.Comma)
{
firstColumnDataDelimiter = token;
}
if (token == firstColumnDataDelimiter)
{
_tokenIt.Advance(1, false);
colIndex++;
}
// 4. If Newline, end of current record.
else if (token == Tokens.NewLine)
{
records.Add(record);
record = new List <Tuple <string, Expr> >();
_tokenIt.Advance();
colIndex = 0;
}
else if (token == Tokens.RightBracket)
{
records.Add(record);
record = new List <Tuple <string, Expr> >();
colIndex = 0;
}
else
{
throw _tokenIt.BuildSyntaxExpectedException("| or new line");
}
token = _tokenIt.NextToken.Token;
}
_tokenIt.Expect(Tokens.RightBracket);
// Now finally build array of maps.
List <Expr> array = new List <Expr>();
foreach (var rec in records)
{
var item = new DataTypeExpr(rec);
array.Add(item);
}
var arrayExp = new DataTypeExpr(array);
return(arrayExp);
}
/// <summary>
/// run step 123.
/// </summary>
/// <returns></returns>
public override Expr Parse()
{
/*
[
name | pages | author
'c#' | 150 | 'microsoft'
'ruby' | 140 | 'matz'
'fluent' | 100 | 'codehelix'
];
* [
name | pages | author
'c#' , 150 , 'microsoft'
'ruby' , 140 , 'matz'
'fluent' , 100 , 'codehelix'
];
*/
// 1. Move past "["
_tokenIt.Advance(1, true);
var columnNames = new List<string>();
var token = _tokenIt.NextToken.Token;
while (!Token.IsNewLine(token) && !_tokenIt.IsEnded)
{
// Expect column name.
string columnName = _tokenIt.ExpectId(false);
columnNames.Add(columnName);
_tokenIt.Advance(1, false);
// "|" pipe to separate column names.
if (_tokenIt.NextToken.Token == Tokens.Pipe)
{
_tokenIt.Advance(1, false);
}
else if(_tokenIt.NextToken.Token != Tokens.NewLine)
throw _tokenIt.BuildSyntaxExpectedException("| or new line");
token = _tokenIt.NextToken.Token;
}
if (_tokenIt.IsEnded)
throw _tokenIt.BuildEndOfScriptException();
// Hit new line?
_tokenIt.Advance();
var records = new List<List<Tuple<string, Expr>>>();
var record = new List<Tuple<string, Expr>>();
int colIndex = 0;
Token firstColumnDataDelimiter = null;
// Build up all the records.
while (token != Tokens.RightBracket && !_tokenIt.IsEnded)
{
// 1. Get the column value: 'C#'
var exp = _parser.ParseExpression(_endTokens, true, passNewLine: false);
string colName = columnNames[colIndex];
record.Add(new Tuple<string, Expr>(colName, exp));
// 2. Is the next one a | or new line ?
//_tokenIt.Advance(1, false);
token = _tokenIt.NextToken.Token;
// 3. If "|" or "," it separates expression/column values.
if (firstColumnDataDelimiter == null && token == Tokens.Pipe || token == Tokens.Comma)
firstColumnDataDelimiter = token;
if (token == firstColumnDataDelimiter)
{
_tokenIt.Advance(1, false);
colIndex++;
}
// 4. If Newline, end of current record.
else if (token == Tokens.NewLine)
{
records.Add(record);
record = new List<Tuple<string, Expr>>();
_tokenIt.Advance();
colIndex = 0;
}
else if (token == Tokens.RightBracket)
{
records.Add(record);
record = new List<Tuple<string, Expr>>();
colIndex = 0;
}
else
{
throw _tokenIt.BuildSyntaxExpectedException("| or new line");
}
token = _tokenIt.NextToken.Token;
}
_tokenIt.Expect(Tokens.RightBracket);
// Now finally build array of maps.
List<Expr> array = new List<Expr>();
foreach (var rec in records)
{
var item = new DataTypeExpr(rec);
array.Add(item);
}
var arrayExp = new DataTypeExpr(array);
return arrayExp;
}
