改进错误信息

Author: actboy168

json.lua

@@ -145,14 +145,16 @@ if string_match(tostring(1 / 2), "%p") == "," then
 end
 
 function encode_map.number(v)
+    if math_type(v) == "integer" then
+        return string_format("%d", v)
+    end
     if v ~= v then
         error("NaN is not supported in JSON")
-    elseif v <= tiny or v >= huge then
+    elseif v <= tiny then
+        error("-Inf is not supported in JSON")
+    elseif v >= huge then
         error("Inf is not supported in JSON")
     end
-    if math_type(v) == "integer" then
-        return string_format("%d", v)
-    end
     return convertreal(v)
 end
 

test/conformance.lua

@@ -131,9 +131,9 @@ function other.encode_sparse_array()
     lt.assertEquals(json.encode { 1, 2 }, "[1,2]")
     lt.assertError(json.encode, { nil, 2 })
     lt.assertError(json.encode, { 1, 2, nil, 4 })
-    lt.assertError(json.encode, { 1, 2,[100] = 1 })
+    lt.assertError(json.encode, { 1, 2, [100] = 1 })
     lt.assertError(json.encode, { 1, 2, a = 1 })
-    lt.assertError(json.encode, { 1, 2,[0] = 1 })
+    lt.assertError(json.encode, { 1, 2, [0] = 1 })
     json.supportSparseArray = true
     lt.assertEquals(json.encode { nil, 1 }, "[null,1]")
 end