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| author | Ryo Nihei <nihei.dev@gmail.com> | 2022-04-01 01:39:28 +0900 |
|---|---|---|
| committer | Ryo Nihei <nihei.dev@gmail.com> | 2022-04-01 01:41:41 +0900 |
| commit | 5c26f617583463382978429f4c3fe550de521d42 (patch) | |
| tree | c656d783d9f5073c5ee794812d35ae059dd5822a /cmd/vartan/parse.go | |
| parent | Fix error messages (diff) | |
| download | cotia-5c26f617583463382978429f4c3fe550de521d42.tar.gz cotia-5c26f617583463382978429f4c3fe550de521d42.tar.xz | |
Print a parse tree even if syntax error occur
A parser can construct a parse tree even if syntax error occur.
When there is a parse tree, print it.
Diffstat (limited to 'cmd/vartan/parse.go')
| -rw-r--r-- | cmd/vartan/parse.go | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/cmd/vartan/parse.go b/cmd/vartan/parse.go index 9b15251..14412bf 100644 --- a/cmd/vartan/parse.go +++ b/cmd/vartan/parse.go @@ -141,14 +141,22 @@ func runParse(cmd *cobra.Command, args []string) (retErr error) { fmt.Fprintf(os.Stderr, "\n") } - if len(synErrs) == 0 && !*parseFlags.onlyParse { + if !*parseFlags.onlyParse { + // A parser can construct a parse tree even if syntax errors occur. + // When therer is a parse tree, print it. + var tree *driver.Node if *parseFlags.cst { tree = treeAct.CST() } else { tree = treeAct.AST() } - driver.PrintTree(os.Stdout, tree) + if tree != nil { + if len(synErrs) > 0 { + fmt.Println("") + } + driver.PrintTree(os.Stdout, tree) + } } return nil |