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lexing and parsing unary operators

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This commit is contained in:
Clemens-Dautermann 2020-08-20 17:11:43 +02:00
parent b2c2a2f497
commit 202c1d2ca2
21 changed files with 290 additions and 130 deletions
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7
Compiler/Lexer/Lexer.cs
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@ -47,6 +47,9 @@ namespace Compiler.Lexer
patterns.Add(new Pattern(@"^;", TokenType.SemicolonToken));
patterns.Add(new Pattern(@"^[a-zA-Z]\w*", TokenType.IdentifierToken));
patterns.Add(new Pattern(@"^[0-9]+", TokenType.IntegerLiteralToken));
patterns.Add(new Pattern(@"^-", TokenType.NegationToken));
patterns.Add(new Pattern(@"^~", TokenType.BitwiseComplementToken));
patterns.Add(new Pattern(@"^!", TokenType.LogicalNegationToken));
//try each pattern do determine if it is the one matching at the beginning
//TODO: There sure is room for optimization here
@ -83,6 +86,10 @@ namespace Compiler.Lexer
case TokenType.CloseBraceToken:
case TokenType.IntToken:
case TokenType.SemicolonToken:
case TokenType.NegationToken:
case TokenType.BitwiseComplementToken:
case TokenType.LogicalNegationToken:
case TokenType.InvalidToken:
break;
default:
t.TokenType = TokenType.InvalidToken;

5
Compiler/Lexer/TokenType.cs
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@ -11,6 +11,11 @@ namespace Compiler.Lexer
SemicolonToken,
IdentifierToken,
IntegerLiteralToken,
//unary operator tokens
NegationToken,
BitwiseComplementToken,
LogicalNegationToken,
//special Token to represent invalid matches
InvalidToken,