From 321bec7366f96a67bb2ab8bc2ea3784919781d57 Mon Sep 17 00:00:00 2001
From: MM Zeeman <mmzeeman@xs4all.nl>
Date: Tue, 7 Jun 2022 11:25:12 +0200
Subject: [PATCH] Compile false as false (#33)

---
 src/filter_template_compiler_test.erl |  2 ++
 src/template_compiler_expr.erl        |  2 +-
 test/template_compiler_expr_SUITE.erl | 13 +++++++++++++
 test/test-data/literals.tpl           |  8 ++++++++
 4 files changed, 24 insertions(+), 1 deletion(-)
 create mode 100644 test/test-data/literals.tpl

diff --git a/src/filter_template_compiler_test.erl b/src/filter_template_compiler_test.erl
index dc8b46a..639e7eb 100644
--- a/src/filter_template_compiler_test.erl
+++ b/src/filter_template_compiler_test.erl
@@ -30,6 +30,8 @@ template_compiler_test(Value, _Context) when is_integer(Value) ->
 template_compiler_test(Value, _Context) ->
     2*z_convert:to_integer(iolist_to_binary(Value)).
 
+template_compiler_test(A, <<"w">>, _Context) ->
+    io_lib:format("~w", [A]);
 template_compiler_test(A, B, _Context) ->
     [
         z_convert:to_binary(A),
diff --git a/src/template_compiler_expr.erl b/src/template_compiler_expr.erl
index 833f1fe..4073596 100644
--- a/src/template_compiler_expr.erl
+++ b/src/template_compiler_expr.erl
@@ -33,7 +33,7 @@ compile({ast, Ast}, _CState, Ws) ->
 compile(true, _CState, Ws) ->
     {Ws, erl_syntax:atom(true)};
 compile(false, _CState, Ws) ->
-    {Ws, erl_syntax:atom(true)};
+    {Ws, erl_syntax:atom(false)};
 compile(undefined, _CState, Ws) ->
     {Ws, erl_syntax:atom(undefined)};
 compile({string_literal, SrcPos, Text}, _CState, Ws) when is_binary(Text) ->
diff --git a/test/template_compiler_expr_SUITE.erl b/test/template_compiler_expr_SUITE.erl
index 66f35c6..2366d4f 100644
--- a/test/template_compiler_expr_SUITE.erl
+++ b/test/template_compiler_expr_SUITE.erl
@@ -20,6 +20,7 @@ groups() ->
         [expr_test
         ,expr_op_test
         ,expr_filter
+        ,expr_literals
         ,expr_nested
         ,expr_autoid
         ,expr_map
@@ -70,6 +71,18 @@ expr_filter(_Config) ->
     <<"*1:2*1:3:2*">> = iolist_to_binary(Bin2),
     ok.
 
+expr_literals(_Config) ->
+    {ok, Bin1} = template_compiler:render("literals.tpl", #{}, [], undefined),
+    <<"true
+false
+undefined
+42
+<<104,101,108,108,111,32,119,111,114,108,100>>
+atom
+[a,b,c]
+#{<<97>> => 1,<<98>> => 2}\n">>, iolist_to_binary(Bin1),
+    ok.
+
 expr_nested(_Config) ->
     Vars1 = #{
         a => #{
diff --git a/test/test-data/literals.tpl b/test/test-data/literals.tpl
new file mode 100644
index 0000000..7d9ec5b
--- /dev/null
+++ b/test/test-data/literals.tpl
@@ -0,0 +1,8 @@
+{{ true | template_compiler_test:"w" }}
+{{ false | template_compiler_test:"w" }}
+{{ undefined | template_compiler_test:"w" }}
+{{ 42 | template_compiler_test:"w" }}
+{{ "hello world" | template_compiler_test:"w" }}
+{{ `atom` | template_compiler_test:"w" }}
+{{ [`a`, `b`, `c`] | template_compiler_test:"w" }}
+{{ %{ a : 1, b: 2 } | template_compiler_test:"w" }}