var escapemark: nullable EscapeMark = null
# The count of `catch` blocs that have been encountered and can catch an abort
- var catch_count = 0
+ var catch_count = 0 is writable
+
+ # The last error thrown on abort/runtime error where catch_count > 0
+ var last_error: nullable FatalError = null
# Is a return or a break or a continue executed?
# Use this function to know if you must skip the evaluation of statements
var error_instance = new MutableInstance(modelbuilder.model.null_type) is lazy
end
+# A runtime error
+class FatalError
+ # The error message
+ var message: String
+
+ # The problematic node, if any
+ var node: nullable ANode
+end
+
# An instance represents a value of the executed program.
abstract class Instance
# The dynamic type of the instance
# `v` is used to know if a colored message is displayed or not
fun fatal(v: NaiveInterpreter, message: String)
do
+ # Abort if there is a `catch` block
+ if v.catch_count > 0 then
+ v.last_error = new FatalError(message, self)
+ abort
+ end
+
if v.modelbuilder.toolcontext.opt_no_color.value == true then
sys.stderr.write("Runtime error: {message} ({location.file.filename}:{location.line_start})\n")
else
redef class AAbortExpr
redef fun stmt(v)
do
- # Abort as asked if there is no `catch` bloc
- if v.catch_count <= 0 then
- fatal(v, "Aborted")
- exit(1)
- else
- abort
- end
+ fatal(v, "Aborted")
+ exit(1)
end
end