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author | Vincent Ambo <mail@tazj.in> | 2021-01-06T17·49+0300 |
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committer | tazjin <mail@tazj.in> | 2021-01-06T23·02+0000 |
commit | d47e55ba4db53445a48cdf634e10e823b1c115da (patch) | |
tree | bc0c506c595ba5a25d234e7da6879df60a6edb4c /users/tazjin/rlox/src/interpreter.rs | |
parent | 0a0335ae6cd957f48086a41832cef794998f7271 (diff) |
feat(tazjin/rlox): Parse & interpret while statements r/2062
Change-Id: Iee772274de95dfd6a6d4af973402859aeda17b1d Reviewed-on: https://cl.tvl.fyi/c/depot/+/2325 Reviewed-by: tazjin <mail@tazj.in> Tested-by: BuildkiteCI
Diffstat (limited to 'users/tazjin/rlox/src/interpreter.rs')
-rw-r--r-- | users/tazjin/rlox/src/interpreter.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/users/tazjin/rlox/src/interpreter.rs b/users/tazjin/rlox/src/interpreter.rs index 738542b6b85b..28eb23f9948c 100644 --- a/users/tazjin/rlox/src/interpreter.rs +++ b/users/tazjin/rlox/src/interpreter.rs @@ -128,6 +128,7 @@ impl Interpreter { Statement::Var(var) => return self.interpret_var(var), Statement::Block(block) => return self.interpret_block(block), Statement::If(if_stmt) => return self.interpret_if(if_stmt), + Statement::While(while_stmt) => return self.interpret_while(while_stmt), } Ok(()) @@ -172,6 +173,14 @@ impl Interpreter { } } + fn interpret_while<'a>(&mut self, stmt: &parser::While<'a>) -> Result<(), Error> { + while eval_truthy(&self.eval(&stmt.condition)?) { + self.interpret_stmt(&stmt.body)?; + } + + Ok(()) + } + fn eval<'a>(&mut self, expr: &Expr<'a>) -> Result<Literal, Error> { match expr { Expr::Assign(assign) => self.eval_assign(assign), |