rishi/scryer-prolog
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print chars somewhat appropriately.

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This commit is contained in:
Mark Thom
2018-05-28 20:19:52 -06:00
parent 07ec2d34c8
commit a13b94622b
5 changed files with 28 additions and 15 deletions
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14
src/prolog/heap_print.rs
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@@ -46,6 +46,7 @@ pub trait HCValueOutputter {
type Output;
fn new() -> Self;
fn push_char(&mut self, char);
fn append(&mut self, &str);
fn begin_new_var(&mut self);
fn result(self) -> Self::Output;
@@ -69,6 +70,10 @@ impl HCValueOutputter for PrinterOutputter {
self.contents += contents;
}
fn push_char(&mut self, c: char) {
self.contents.push(c);
}
fn begin_new_var(&mut self) {
if self.contents.len() != 0 {
self.contents += ", ";
@@ -233,12 +238,17 @@ impl<'a, Formatter: HCValueFormatter, Outputter: HCValueOutputter>
match c {
Constant::Char(c) if c == '\n' =>
self.outputter.append("'\\n'"),
// Constant::Char(c) if c == '\f' =>
// self.outputter.append("\\f"),
// Constant::Char(c) if c == '\f' =>
// self.outputter.append("\\f"),
Constant::Char(c) if c == '\r' =>
self.outputter.append("'\\r'"),
Constant::Char(c) if c == '\t' =>
self.outputter.append("'\\t'"),
Constant::Char(c) => {
self.outputter.append("'");
self.outputter.push_char(c);
self.outputter.append("'");
},
// Constant::Char(c) if c == '\b' =>
// self.outputter.append("\\b"),
// Constant::Char(c) if c == '\\a' =>