Alek Ratzloff
365bee0554
Add support for +=, -=, *=, and /= operators. This is basically just
syntactic sugar, but it's still nice to have
a += 1
compiles to the equivalent of
a = a + 1
with all the same implications of scoping rules.
Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
76 lines
954 B
Rust
76 lines
954 B
Rust
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
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pub enum TokenKind {
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// Keywords
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Return,
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If,
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Else,
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True,
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False,
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Nil,
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Import,
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From,
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// Expressions
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Name,
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Number,
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String,
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// Binary operators
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Plus,
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Minus,
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Star,
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Slash,
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// Augmented assignment operators
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PlusEq,
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MinusEq,
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StarEq,
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SlashEq,
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// Unary operators (not already covered)
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Bang,
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// Boolean operators
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And,
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Or,
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// Comparison
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BangEq,
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EqEq,
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Greater,
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GreaterEq,
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Less,
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LessEq,
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// Braces, parens, etc
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LParen,
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RParen,
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LBrace,
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RBrace,
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LBracket,
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RBracket,
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// Assignment
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Eq,
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// Dot, comma
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Dot,
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Comma,
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Arrow,
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Colon,
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// Line end
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Eol,
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// File end
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Eof,
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}
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#[derive(Debug, Clone)]
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pub struct Token {
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pub line: usize,
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//pub index: usize,
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pub text: String,
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pub kind: TokenKind,
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}
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