Implement number type

renrs/src/lib.rs

@@ -14,6 +14,7 @@ pub enum Token {
     Str(String),
     Array(Vec<Token>),
     Boolean(bool),
+    Number(f64),
 }
 
 impl Token {
@@ -23,6 +24,7 @@ impl Token {
             Str(_) => "String",
             Array(_) => "Array",
             Boolean(_) => "Boolean",
+            Number(_) => "Number",
         }
     }
 }
@@ -110,6 +112,7 @@ fn parse_pair(pair: pest::iterators::Pair<Rule>) -> Token {
             "False" => false,
             _ => unreachable!(),
         }),
+        Rule::number => Token::Number(contents.as_str().parse().unwrap()),
         Rule::keyword => Token::Keyword(contents.as_str().to_owned()),
         __ => unreachable!(),
     }

renrs/src/rpy.pest

@@ -8,7 +8,7 @@ char = { !NEWLINE ~ ANY }
 // http://pest.rs/book/grammars/syntax.html#atomic
 inner = @{ char* }
 
-token = { string | array | boolean | keyword }
+token = { string | array | boolean | number | keyword }
 
 // KEYWORDS
 // has to be atomic for no implicit separate (spaces)
@@ -37,6 +37,13 @@ array = {
 // BOOLEAN
 boolean = { "True" | "False" }
 
+// NUMBER
+number = @{
+    "-"?
+    ~ ("0" | ASCII_NONZERO_DIGIT ~ ASCII_DIGIT*)
+    ~ ("." ~ ASCII_DIGIT*)?
+}
+
 // comments are a # followed by
 // any number of non-newline characters
 COMMENT = _{ "#" ~ char* }