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This commit is contained in:
nazrin 2025-06-01 21:08:11 +00:00
parent e749367886
commit f0ff14e5b5
6 changed files with 133 additions and 14 deletions
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21
src/jlox/interpreter.d
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@ -75,6 +75,12 @@ class Interpreter : Stmt.Visitor!void, Expr.Visitor!TValue {
void visit(Stmt.Expression stmt){
evaluate(stmt.expression);
}
void visit(Stmt.If stmt){
if(isTruthy(evaluate(stmt.condition)))
execute(stmt.thenBranch);
else if(stmt.elseBranch)
execute(stmt.elseBranch);
}
void visit(Stmt.Print stmt){
TValue value = evaluate(stmt.expression);
writeln(tvalueToString(value));
@ -82,6 +88,10 @@ class Interpreter : Stmt.Visitor!void, Expr.Visitor!TValue {
void visit(Stmt.Var stmt){
environment.define(stmt.name.lexeme, stmt.initialiser is null ? TValue.nil(0) : evaluate(stmt.initialiser));
}
void visit(Stmt.While stmt){
while(isTruthy(evaluate(stmt.condition)))
execute(stmt.body);
}
TValue visit(Expr.Literal expr){
return expr.value;
@ -101,6 +111,17 @@ class Interpreter : Stmt.Visitor!void, Expr.Visitor!TValue {
assert(0);
}
}
TValue visit(Expr.Logical expr){
TValue left = evaluate(expr.left);
if(expr.operator.type == TokenType.OR){
if(isTruthy(left))
return left;
} else {
if(!isTruthy(left))
return left;
}
return evaluate(expr.right);
}
TValue visit(Expr.Binary expr){
TValue left = evaluate(expr.left);
TValue right = evaluate(expr.right);