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Support single quote strings

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Deukhoofd 2018-12-07 20:15:27 +01:00
parent 2327e18f77
commit 77be6fd996
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GPG Key ID: B4C087AC81641654
1 changed files with 8 additions and 7 deletions
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15
Upsilon/Parser/Lexer.cs
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@ -107,7 +107,8 @@ namespace Upsilon.Parser
case '^': case '^':
return new SyntaxToken(SyntaxKind.RoofSign, _position, "^", null); return new SyntaxToken(SyntaxKind.RoofSign, _position, "^", null);
case '"': case '"':
return LexString(); case '\'':
return LexString(Current);
case '=': case '=':
if (Next == '=') if (Next == '=')
{ {
@ -174,26 +175,26 @@ namespace Upsilon.Parser
return new SyntaxToken(SyntaxKind.Number, start, numStr.ToString(), o); return new SyntaxToken(SyntaxKind.Number, start, numStr.ToString(), o);
} }
private SyntaxToken LexString() private SyntaxToken LexString(char current)
{ {
var start = _position; var start = _position;
var sb = new StringBuilder(); var sb = new StringBuilder();
while (_position < _text.Length) while (_position < _text.Length)
{ {
_position++; _position++;
if (Current == '\\' && Next == '"') if (Current == '\\' && Next == current)
{ {
sb.Append("\""); sb.Append(current);
_position += 2; _position += 2;
} }
if (Current == '"') if (Current == current)
break; break;
sb.Append(Current); sb.Append(Current);
} }
if (Current != '"') if (Current != current)
{ {
_diagnostics.LogBadCharacter(new TextSpan(_position, 1), '"', Current); _diagnostics.LogBadCharacter(new TextSpan(_position, 1), current, Current);
} }
var res = sb.ToString(); var res = sb.ToString();