diff options
| author | Leon <github@adigitoleo.dissimulo.com> | 2022-04-10 01:51:44 +1000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-04-09 17:51:44 +0200 |
| commit | 152dab09838adc5a4ab8dc220c5017c868563467 (patch) | |
| tree | 028ea601bd12af106028d5e9c7f1a556e7ce6dac | |
| parent | ded8b0e5410518ffed24b46565eb6e42f18a63f1 (diff) | |
| download | Nim-152dab09838adc5a4ab8dc220c5017c868563467.tar.gz | |
fix: Fix introductory macro examples (#19706)
Co-authored-by: adigitoleo <adigitoleo@dissimulo.com>
| -rw-r--r-- | doc/tut3.rst | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/doc/tut3.rst b/doc/tut3.rst index 1c497f1f5..c2c956107 100644 --- a/doc/tut3.rst +++ b/doc/tut3.rst @@ -188,21 +188,35 @@ Backticks are used to insert code from `NimNode` symbols into the generated expression. .. code-block:: nim - macro a(i) = quote do: let `i` = 0 + :test: "nim c $1" + import std/macros + macro a(i) = quote do: + let `i` = 0 + a b + doAssert b == 0 A custom prefix operator can be defined whenever backticks are needed. .. code-block:: nim - macro a(i) = quote("@") do: assert @i == 0 + :test: "nim c $1" + import std/macros + macro a(i) = quote("@") do: + assert @i == 0 + let b = 0 a b The injected symbol needs accent quoted when it resolves to a symbol. .. code-block:: nim - macro a(i) = quote("@") do: let `@i` == 0 + :test: "nim c $1" + import std/macros + macro a(i) = quote("@") do: + let `@i` = 0 + a b + doAssert b == 0 Make sure to inject only symbols of type `NimNode` into the generated syntax tree. You can use `newLit` to convert arbitrary values into |