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Make the cli example print JSON (#197)

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...via the new json_example feature - to make it easier to try out the parser without coding.
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Taehoon Moon 2020-06-12 22:38:59 +09:00 • committed by GitHub
parent f4fbd9b6b3
commit a0f076acda
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3 changed files with 35 additions and 3 deletions
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24
examples/cli.rs
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@ -23,8 +23,16 @@ fn main() {
simple_logger::init().unwrap();
let filename = std::env::args().nth(1).expect(
"No arguments provided!\n\n\
Usage: cargo run --example cli FILENAME.sql [--dialectname]",
r#"
No arguments provided!
Usage:
$ cargo run --example cli FILENAME.sql [--dialectname]
To print the parse results as JSON:
$ cargo run --feature json_example --example cli FILENAME.sql [--dialectname]
"#,
);
let dialect: Box<dyn Dialect> = match std::env::args().nth(2).unwrap_or_default().as_ref() {
@ -56,7 +64,17 @@ fn main() {
.collect::<Vec<_>>()
.join("\n")
);
println!("Parse results:\n{:#?}", statements);
if cfg!(feature = "json_example") {
#[cfg(feature = "json_example")]
{
let serialized = serde_json::to_string_pretty(&statements).unwrap();
println!("Serialized as JSON:\n{}", serialized);
}
} else {
println!("Parse results:\n{:#?}", statements);
}
std::process::exit(0);
}
Err(e) => {