0.1.0: impl standard type support

README.md

@@ -19,18 +19,23 @@ Making some assumptions (ie. that our types aren't changing) allows...
 - predictably _idiomatic_ API
 - **hard to misuse**
 
-It's _fairly_ hard to misuse, but it's not fully optimized yet. In some cases,
-it's much faster than the standard json module. In a few, it's a little slower.
+It's _fairly_ hard to misuse, but it's not fully optimized yet. In most cases,
+it's faster than the standard library's `json` module. In rare cases, you may
+find it a little slower.
 
-The main advantage is that you get JSON encoding of tuples, objects, and
+Static values known at compile-time such as constants or macro outputs are
+serialized at compile-time. This is orders of magnitude faster than the
+standard library.
+
+But the main advantage is that you get JSON encoding of tuples, objects, and
 iterators "for free" -- no serialization to implement and no duplication of
 data.
 
 Everything is type-checked, too, so there will be no runtime serialization
 exceptions.
 
-And, if you _want_ to implement custom serialization, it's now trivial to do
-so for individual types.
+And, if you _want_ to implement custom serialization, it's now trivial to do so
+for individual types. You can also implement custom compile-time serialization.
 
 ## Usage
 
@@ -89,10 +94,18 @@ type
 let b = B(x: 3, y: "sup")
 let c: C = @[ B(x: 1), B(x: 2), B(x: 3) ]
 
+const a = B(x: 4, y: "compile-time!")
+
 func jason(n: B): Json =
+  ## my special json encoding for B
   if n.x mod 2 == 0: jason"even"
   else:              jason"odd"
 
+macro jason(n: static[B]): Json =
+  ## compile-time json encoding is free!
+  newCall(ident"Json", newLit(n.jason.string))
+
+echo a.jason      # "even"
 echo b.jason      # "odd"
 echo c.jason      # ["odd","even","odd"]
 ```

jason.nim

@@ -27,7 +27,7 @@ proc join(a: openArray[Json]; sep = Json""): Json =
 # these are copied from stdlib so that we can be certain we match output
 # without having to import json and all of its dependencies...  i know.
 
-proc escapeJsonUnquoted(s: string; result: var string) =
+proc escapeJsonUnquoted(s: string; result: var string) {.used.} =
   ## Converts a string `s` to its JSON representation without quotes.
   ## Appends to ``result``.
   for c in s:
@@ -91,14 +91,6 @@ macro jason*(s: string): Json =
   let escapist = bindSym "escapeJson"
   result = json newCall(escapist, s)
 
-macro jason*(s: static[string]): Json =
-  ## Escapes a static string to form "JSON".
-  runnableExamples:
-    const g = "goats"
-    assert jason(g) == """"goats""""
-
-  result = json newLit(escapeJson s)
-
 macro jason*(b: bool): Json =
   ## Produce a JSON boolean, either `true` or `false`.
   runnableExamples:
@@ -121,6 +113,22 @@ func jason*(f: SomeFloat): Json =
   ## Render any Nim float as a JSON number.
   result = Json($f)
 
+when not defined(nimdoc):
+  macro jason*(j: static[string]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[bool]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[int]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[int8]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[int16]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[int32]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[int64]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[uint]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[uint8]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[uint16]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[uint32]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[uint64]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[float]): Json = json newLit(j.jason.string)
+  macro jason*(j: static[float32]): Json = json newLit(j.jason.string)
+
 proc composeWithComma(parent: NimNode; js: NimNode): NimNode =
   # whether we need to add a comma before the next element
   let adder = bindSym "add"

jason.nimble

@@ -1,4 +1,4 @@
-version = "0.0.3"
+version = "0.1.0"
 author = "disruptek"
 description = "compile-time json"
 license = "MIT"

tests/test.nim

@@ -93,13 +93,19 @@ testes:
       B = object
         x: int
         y: string
+      C = seq[B]
 
+    const a = B(x: 4, y: "compile-time!")
     let b = B(x: 3, y: "sup")
+    let c: C = @[ B(x: 1), B(x: 2), B(x: 3) ]
 
     func jason(n: B): Json =
-      if n.x == 3:
-        jason"odd"
-      else:
-        jason"even"
+      if n.x mod 2 == 0: jason"even"
+      else:              jason"odd"
 
+    macro jason(n: static[B]): Json =
+      newCall(ident"Json", newLit(n.jason.string))
+
+    check a.jason == """"even""""
     check b.jason == """"odd""""
+    check c.jason == """["odd","even","odd"]"""