Fix negative numbers parsing as strings

sagebind · May 11, 2019 · b1d00a5 · b1d00a5
1 parent 9449701
commit b1d00a5
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Showing 2 changed files with 12 additions and 1 deletion.
diff --git a/syntax/src/grammar.pest b/syntax/src/grammar.pest
@@ -79,7 +79,7 @@ string_literal = ${ "'" ~ single_quote_inner ~ "'" | symbol }
 single_quote_inner = ${ ("\\'" | !"'" ~ ANY)* }
 
 // Numbers are floating point.
-number_literal = ${ "." ~ ASCII_DIGIT+ | ASCII_DIGIT+ ~ ("." ~ ASCII_DIGIT+)? }
+number_literal = ${ "-"? ~ ("." ~ ASCII_DIGIT+ | ASCII_DIGIT+ ~ ("." ~ ASCII_DIGIT+)?) }
 
 // A symbol is an unquoted string, usually used for identifying variable names.
 symbol = ${ !ASCII_DIGIT ~ (!member_operator ~ (ASCII_ALPHANUMERIC | "_" | "-" | "?" | "!" | "." | "/"))+ }

diff --git a/syntax/tests/parser/number-literals.toml b/syntax/tests/parser/number-literals.toml
@@ -2,6 +2,7 @@ source = '''
 println 100
 println 102.5
 println .25
+println -255
 '''
 ast = '''
 Block(
@@ -37,6 +38,16 @@ Block(
                 ],
             ),
         ]),
+        Pipeline([
+            NamedCall(
+                function: VariablePath([
+                    "println",
+                ]),
+                args: [
+                    -255,
+                ],
+            ),
+        ]),
     ],
 )
 '''