Initial commit

diff --git a/tatsu_grammar.txt b/tatsu_grammar.txt
new file mode 100644 (file)
index 0000000..56703ea
--- /dev/null
+++ b/tatsu_grammar.txt
@@ -0,0 +1,115 @@
+start\r
+    =\r
+    expression\r
+    $\r
+    ;\r
+\r
+expression\r
+    =\r
+    { !matching_expression CHAR }* &matching_expression\r
+    ;\r
+\r
+matching_expression\r
+    =\r
+    raw_block_expression | block_expression | variable_expression | comment_expression\r
+    ;\r
+\r
+raw_block_expression\r
+    =\r
+    "{% raw %}"\r
+    { !raw_block_end CHAR }*\r
+    raw_block_end\r
+    ;\r
+\r
+raw_block_end\r
+    =\r
+    "{% endraw %}"\r
+    ;\r
+\r
+block_expression\r
+    =\r
+    block_start {SP}* expression {SP}* block_end\r
+    #| block_start\r
+    ;\r
+\r
+block_start\r
+    =\r
+    block_open !("end") IDENTIFIER {block_parameter}* block_close\r
+    ;\r
+\r
+block_end\r
+    =\r
+    block_open "end" IDENTIFIER block_close\r
+    ;\r
+\r
+block_open\r
+    =\r
+    @:"{%" {SP}*\r
+    ;\r
+block_close\r
+    =\r
+    {SP}* @:"%}"\r
+    ;\r
+\r
+block_parameter\r
+    =\r
+    {SP}+ @:(IDENTIFIER "=" block_parameter_value)\r
+    | {SP}+ @:block_parameter_value\r
+    ;\r
+block_parameter_value\r
+    =\r
+    {ALPHA}+\r
+    ;\r
+\r
+variable_expression\r
+    =\r
+    variable_open IDENTIFIER { !variable_close variable_filter }* variable_close\r
+    ;\r
+variable_open\r
+    =\r
+    @:"{{" {SP}*\r
+    ;\r
+variable_close\r
+    =\r
+    {SP}* @:"}}"\r
+    ;\r
+\r
+variable_filter\r
+    =\r
+    {SP}* "|" {SP}* @:filter\r
+    ;\r
+filter                  = @+:IDENTIFIER [@+:filter_parameters];\r
+filter_parameters       = "(" [@+:filter_parameter {"," {SP}* @+:filter_parameter}*] ")";\r
+filter_parameter        = {CHAR}* ;\r
+\r
+comment_expression      = comment_open comment comment_close ;\r
+comment_open            = "{#" ;\r
+comment_close           = "#}" ;\r
+comment                 = {!comment_close CHAR}* ;\r
+\r
+content                 = {CHAR}* ;\r
+\r
+IDENTIFIER\r
+    =\r
+    /[a-zA-Z]+/\r
+    ;\r
+\r
+ALPHA\r
+    =\r
+    /[a-zA-Z]/\r
+    ;\r
+\r
+DIGIT\r
+    =\r
+    /[0-9]/\r
+    ;\r
+\r
+SP\r
+    =\r
+    /\s/\r
+    ;\r
+\r
+CHAR\r
+    =\r
+    ?'.' | ?'\s'\r
+    ;
\ No newline at end of file

diff --git a/test_tatsu.py b/test_tatsu.py
new file mode 100644 (file)
index 0000000..411ce60
--- /dev/null
+++ b/test_tatsu.py
@@ -0,0 +1,10 @@
+from tatsu.util import asjson\r
+import json\r
+import tatsu\r
+\r
+\r
+with open('tatsu_grammar.txt', 'r') as tatsu_grammar:\r
+    with open('test_template.jinja', 'r') as test_template:\r
+        ast = tatsu.parse(tatsu_grammar.read(), test_template.read(), whitespace='')\r
+\r
+        print(json.dumps(asjson(ast), indent=4))
\ No newline at end of file

diff --git a/test_template.jinja b/test_template.jinja
new file mode 100644 (file)
index 0000000..d785887
--- /dev/null
+++ b/test_template.jinja
@@ -0,0 +1,8 @@
+{%block single key=val param=value %}\r
+test {{var}}\r
+{%endblock%}\r
+{# comment contents\r
+across lines #}\r
+{% raw %}\r
+{% block %}fake content{{ fake vars }}\r
+{% endraw %}
\ No newline at end of file