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DEV: Don't output the welcome message if we aren't interactive.

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This commit is contained in:
Jeremy Wall 2019-11-11 15:22:21 -06:00
parent 7e3e598423
commit 04a7ad0404
3 changed files with 10 additions and 4 deletions
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1
Cargo.lock generated
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@ -490,6 +490,7 @@ name = "ucg"
version = "0.6.4"
dependencies = [
"abortable_parser 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
"atty 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
"base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
"bencher 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
"clap 2.26.2 (registry+https://github.com/rust-lang/crates.io-index)",

1
Cargo.toml
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@ -31,6 +31,7 @@ regex = "1"
dirs = "1.0.4"
unicode-segmentation = "1.2.1"
rustyline = "4.1.0"
atty = "0.2"
[build-dependencies]
walkdir = "2.2.7"

4
src/build/mod.rs
View File

@ -26,6 +26,8 @@ use std::rc::Rc;
use rustyline;
use rustyline::error::ReadlineError;
use atty;
use atty::Stream;
use simple_error;
use crate::ast::*;
@ -215,9 +217,11 @@ where
pub fn repl(&mut self, mut editor: rustyline::Editor<()>, config_home: PathBuf) -> BuildResult {
// loop
let mut lines = crate::io::StatementAccumulator::new();
if atty::is(Stream::Stdin) {
println!("Welcome to the UCG repl. Ctrl-D to exit, Ctrl-C to abort expression.");
println!("Type '#help' for help.");
println!("");
}
// Initialize VM with an empty OpPointer
let mut vm = VM::new(
self.strict,