Fix float parsing

Author: bcardarella

CHANGELOG.md

@@ -33,6 +33,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 - Views will now update properly when the server changes the value of a form field (#1483)
+- Fixed float parsing for stylesheet rules
 
 ## [0.3.1] 2024-10-02
 

lib/live_view_native/swiftui/rules_parser/tokens.ex

@@ -21,32 +21,30 @@ defmodule LiveViewNative.SwiftUI.RulesParser.Tokens do
 
   def nil_(), do: replace(string("nil"), nil)
 
-  def minus(), do: string("-")
-
-  def underscored_integer() do
-    integer(min: 1)
+  def digits() do
+    ascii_char([?0..?9])
     |> repeat(
       choice([
         ascii_char([?0..?9]),
-        ignore(string("_"))
-        |> ascii_char([?0..?9])
+        ignore(string("_")) |> ascii_char([?0..?9])
       ])
-      |> reduce({List, :to_string, []})
     )
-    |> reduce({Enum, :join, [""]})
+    |> reduce({List, :to_string, []})
+  end
+
+  def minus(), do: string("-")
+
+  def frac() do
+    concat(string("."), digits())
   end
 
   def integer() do
     optional(minus())
-    |> concat(underscored_integer())
+    |> concat(digits())
     |> reduce({Enum, :join, [""]})
     |> map({String, :to_integer, []})
   end
 
-  def frac() do
-    concat(string("."), underscored_integer())
-  end
-
   def float() do
     integer()
     |> concat(frac())

test/live_view_native/swiftui/rules_parser_test.exs

@@ -117,8 +117,8 @@ defmodule LiveViewNative.SwiftUI.RulesParserTest do
 
       assert parse(input) == output
 
-      input = "background(Color.blue.opacity(0.2).blendMode(.multiply).mix(with: .orange).opacity(0.7))"
-      output = {:background, [], [{:., [], [{:., [], [{:., [], [{:., [], [{:., [], [:Color, :blue]}, {:opacity, [], [0.2]}]}, {:blendMode, [], [{:., [], [nil, :multiply]}]}]}, {:mix, [], [{:with, {:., [], [nil, :orange]}}]}]}, {:opacity, [], [0.7]}]}]}
+      input = "background(Color.blue.opacity(0.02).blendMode(.multiply).mix(with: .orange).opacity(0.7))"
+      output = {:background, [], [{:., [], [{:., [], [{:., [], [{:., [], [{:., [], [:Color, :blue]}, {:opacity, [], [0.02]}]}, {:blendMode, [], [{:., [], [nil, :multiply]}]}]}, {:mix, [], [{:with, {:., [], [nil, :orange]}}]}]}, {:opacity, [], [0.7]}]}]}
 
       assert parse(input) == output
     end