fix parsing of numbers in tinyyaml.lua (#38)

spec/example_spec.lua

@@ -94,7 +94,7 @@ busted.describe("example", function()
     end
 
     assert.same(
-      '6.8523015e+5',  -- not supported
+      6.8523015e+5,
       t.float.canonical
     )
     assert.same(

spec/number_spec.lua

@@ -0,0 +1,54 @@
+local busted = require('busted')
+local assert = require('luassert')
+local yaml   = require('tinyyaml')
+
+busted.describe("numbers in nested seq:", function ()
+    local parsed_yaml = yaml.parse('case: [["status", "==", 302]]')
+    local parsed_yaml2 = yaml.parse('case: [["status", "==", "302"]]')
+    busted.it("numbers", function ()
+        assert.same(
+            {
+                case = {{"status", "==", 302}}
+            },
+            yaml.parse([[
+                case:
+                - - "status"
+                  - "==" 
+                  - 302
+                ]]
+            )
+        )
+    end)
+
+    busted.it("numbers in inline nested seq:", function ()
+        assert.same(
+            {
+                case = {{"status", "==", 302}}
+            },
+            yaml.parse([[
+                case:
+                - 
+                  - "status"
+                  - "==" 
+                  - 302
+                ]]
+            )
+        )
+    end)
+
+    busted.it("number inside [] brackets", function ()
+        assert.same(
+            {
+                case = {{"status", "==", 302}}
+            }, parsed_yaml
+        )
+    end)
+
+    busted.it("number inside [] brackets in double quotes", function ()
+        assert.same(
+            {
+                case = {{"status", "==", "302"}}
+            }, parsed_yaml2
+        )
+    end)
+end)

tinyyaml.lua

@@ -231,7 +231,9 @@ function Parser:parsestring(line, stopper)
     end
     line = ssub(line, 2)
   end
-  return rtrim(buf), line
+  buf = rtrim(buf)
+  local val = tonumber(buf) or buf
+  return val, line
 end
 
 local function isemptyline(line)