diff options
| author | Ben Bridle <ben@derelict.engineering> | 2025-02-27 14:53:21 +1300 |
|---|---|---|
| committer | Ben Bridle <ben@derelict.engineering> | 2025-02-27 14:53:31 +1300 |
| commit | 67470aea034fd46f4bbcfe815c51ad3451043188 (patch) | |
| tree | 83d78d3d28e094d6a3af347d2ff2ff16472e5421 /src/tokens/expression.rs | |
| parent | 4e8fae09f0f7d6f3a4ddbe285aeb01ef0622b761 (diff) | |
| download | torque-asm-67470aea034fd46f4bbcfe815c51ad3451043188.zip | |
Finish first working version of Torque
This is a huge and messy commit, worked on piecemeal while traveling
and while the language was still being designed.
Diffstat (limited to 'src/tokens/expression.rs')
| -rw-r--r-- | src/tokens/expression.rs | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/src/tokens/expression.rs b/src/tokens/expression.rs new file mode 100644 index 0000000..ff2d82d --- /dev/null +++ b/src/tokens/expression.rs @@ -0,0 +1,74 @@ +use crate::*; + + +#[derive(Clone)] +pub struct Expression { + pub source: SourceSpan, + pub tokens: Vec<ExpressionToken>, +} + +#[derive(Clone)] +pub struct ExpressionToken { + pub source: SourceSpan, + pub variant: ExpressionTokenVariant, +} + +#[derive(Clone)] +pub enum ExpressionTokenVariant { + Invocation(String), + Literal(isize), + Operator(Operator), + Error(ExpressionParseError), +} + +#[derive(Clone, Copy, Debug)] +pub enum Operator { + Equal, + NotEqual, + LessThan, + GreaterThan, + Add, + Subtract, + LeftShift, + RightShift, + And, + Or, + Xor, + Not, +} + +#[derive(Clone)] +pub enum ExpressionParseError { + InvalidHexadecimalLiteral(String), +} + +impl std::fmt::Debug for Expression { + fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> { + for (i, token) in self.tokens.iter().enumerate() { + let string = match &token.variant { + ExpressionTokenVariant::Invocation(name) => name, + ExpressionTokenVariant::Literal(value) => &value.to_string(), + ExpressionTokenVariant::Operator(operator) => match operator { + Operator::Equal => "=", + Operator::NotEqual => "!=", + Operator::LessThan => "<", + Operator::GreaterThan => ">", + Operator::Add => "+", + Operator::Subtract => "-", + Operator::LeftShift => "<<", + Operator::RightShift => ">>", + Operator::And => "&", + Operator::Or => "|", + Operator::Xor => "^", + Operator::Not => "~", + } + ExpressionTokenVariant::Error(_) => "<error>", + }; + match i { + 0 => write!(f, "{string}")?, + _ => write!(f, " {string}")?, + } + } + return Ok(()); + } +} |