Don't hang when reading an invalid rvalue (#77)
Fixes #76
diff --git a/lexer.go b/lexer.go
index e7d5d24..3235753 100644
--- a/lexer.go
+++ b/lexer.go
@@ -234,6 +234,7 @@
return l.lexKey
}
+ return l.errorf("no value can start with %c", next)
}
l.emit(tokenEOF)
diff --git a/lexer_test.go b/lexer_test.go
index 382e05a..d6ddc07 100644
--- a/lexer_test.go
+++ b/lexer_test.go
@@ -692,3 +692,17 @@
token{Position{1, 7}, tokenEOF, ""},
})
}
+
+func TestLexUnknownRvalue(t *testing.T) {
+ testFlow(t, `a = !b`, []token{
+ token{Position{1, 1}, tokenKey, "a"},
+ token{Position{1, 3}, tokenEqual, "="},
+ token{Position{1, 5}, tokenError, "no value can start with !"},
+ })
+
+ testFlow(t, `a = \b`, []token{
+ token{Position{1, 1}, tokenKey, "a"},
+ token{Position{1, 3}, tokenEqual, "="},
+ token{Position{1, 5}, tokenError, `no value can start with \`},
+ })
+}
diff --git a/parser_test.go b/parser_test.go
index 1ea5924..784cdb8 100644
--- a/parser_test.go
+++ b/parser_test.go
@@ -299,6 +299,18 @@
})
}
+func TestParseUnknownRvalue(t *testing.T) {
+ _, err := Load("a = !bssss")
+ if err == nil {
+ t.Error("Expecting a parse error")
+ }
+
+ _, err = Load("a = /b")
+ if err == nil {
+ t.Error("Expecting a parse error")
+ }
+}
+
func TestMissingValue(t *testing.T) {
_, err := Load("a = ")
if err.Error() != "(1, 5): expecting a value" {
