From 51313c4773f0af62121b2192ff0cca9560b7ab44 Mon Sep 17 00:00:00 2001
From: Bruce Hill <bruce@bruce-hill.com>
Date: Sun, 17 Jan 2021 19:42:11 -0800
Subject: Adding more language grammars

---
 grammars/python.bp | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 grammars/python.bp

(limited to 'grammars/python.bp')

diff --git a/grammars/python.bp b/grammars/python.bp
new file mode 100644
index 0000000..0683c0a
--- /dev/null
+++ b/grammars/python.bp
@@ -0,0 +1,30 @@
+# Syntax definitions for some Python-specific patterns
+#
+# NOTE: this is *NOT* intended to be a complete definition of the language's
+# syntax! Providing a full language grammar is overkill, because the intended
+# use case is finding/replacing string patterns. This task does not require a
+# full parse tree, and having one makes the task considerably more complicated.
+# See the accompanying README.md for more info.
+
+comment: `# ..$
+string: quoted-string / `b quoted-string / `f quoted-string
+quoted-string: "'''".."'''" % \n / '"""'..'"""' % \n / `"..`" % (`\.) / `'..`' % (`\.)
+dict: `{__`} / `{ __ +(expr__`:__expr) % (__`,__) __ `}
+set: `{ __ +expr % (__`,__) __ `}
+list: `[ __ +expr % (__`,__) __ `]
+keyword: |("and" / "as" / "assert" / "break" / "class" / "continue" / "def" /
+    "del" / "elif" / "else" / "except" / "finally" / "for" / "from" /
+    "global" / "if" / "import" / "in" / "is" / "lambda" / "None" / "nonlocal" /
+    "not" / "or" / "pass" / "raise" / "return" / "try" / "while" /
+    "with" / "yield")|
+expr: (function-call / lambda / string / dict / set / list / id / number / `(__expr__`)) *(method/attr/index)
+method: `. function-call
+attr: `. id
+index: `[__expr[__`:__expr [__`:__expr]]__`]
+tuple: `(__`) / +(__expr__`,) [__expr]
+empty-tuple: `(__`)
+class: |"class"|_id`: +(\N ..$)
+function: function-def +(\N ..$)
+function-def: |"def"|_id parens `:
+function-call: !<"def " id parens
+lambda: |"lambda"| .. `:__expr
-- 
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