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use core:debug;
use core:io;
use core:lang;
// Simple expression evaluator with parameters and other interesting features of the syntax language.
Int testExpr() on Compiler {
Map<Str, Int> vars;
vars.put("a", 10);
vars.put("b", 20);
Parser<SExpr> parser;
parser.parse("2 * a + b", Url());
parser.tree.transform(vars);
}
// Make sure we can handle empty productions correctly.
Bool testEmpty() on Compiler {
Parser<SParen> parser;
parser.parse("()", Url());
!parser.hasError;
}
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