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-rw-r--r--grammar/grammar.go4
1 files changed, 2 insertions, 2 deletions
diff --git a/grammar/grammar.go b/grammar/grammar.go
index 1a09a22..bc8cc6b 100644
--- a/grammar/grammar.go
+++ b/grammar/grammar.go
@@ -274,7 +274,7 @@ func findUsedAndUnusedSymbols(root *spec.RootNode) (*usedAndUnusedSymbols, error
}
continue
}
- return nil, fmt.Errorf("a definition of unused production was not found: %v", sym)
+ return nil, fmt.Errorf("unknown symbol: a symbol must be a terminal symbol or a non-terminal symbol: %v", sym)
}
return &usedAndUnusedSymbols{
@@ -816,7 +816,7 @@ func (b *GrammarBuilder) genProductionsAndActions(root *spec.RootNode, symTabAnd
if len(dir.Parameters) == 0 {
b.errs = append(b.errs, &verr.SpecError{
Cause: semErrDirInvalidParam,
- Detail: "'ast' directive needs at least one symbol position parameter",
+ Detail: "'ast' directive needs at least one parameter",
Row: dir.Pos.Row,
Col: dir.Pos.Col,
})