From 529afef55ce9412c2726e97c525eef34c567cbcb Mon Sep 17 00:00:00 2001
From: Melody Horn <melody@boringcactus.com>
Date: Tue, 3 Nov 2020 18:12:32 -0700
Subject: stub out assignment statements

---
 language/statements/assignment.rst | 15 +++++++++++++++
 language/statements/index.rst      |  1 +
 syntax.md                          | 13 -------------
 3 files changed, 16 insertions(+), 13 deletions(-)
 create mode 100644 language/statements/assignment.rst

diff --git a/language/statements/assignment.rst b/language/statements/assignment.rst
new file mode 100644
index 0000000..f8c1600
--- /dev/null
+++ b/language/statements/assignment.rst
@@ -0,0 +1,15 @@
+Assignments
+^^^^^^^^^^^
+
+.. crowbar:element:: AssignmentStatement <- AssignmentBody ';'
+                     AssignmentBody <- DirectAssignmentBody / UpdateAssignmentBody / CrementAssignmentBody
+
+.. crowbar:element:: DirectAssignmentBody <- AssignmentTarget '=' Expression
+
+    .. todo:: define direct assignment
+
+.. crowbar:element:: UpdateAssignmentBody <- AssignmentTarget ('+=' / '-=' / '*=' / '/=' / '%=' / '&=' / '^=' / '|=') Expression
+
+.. crowbar:element:: CrementAssignmentBody <- AssignmentTarget ('++' / '--')
+
+.. todo:: define other assignments relative to direct
diff --git a/language/statements/index.rst b/language/statements/index.rst
index ac76f3b..623eb23 100644
--- a/language/statements/index.rst
+++ b/language/statements/index.rst
@@ -32,3 +32,4 @@ Statements
     variables
     structure
     flow-control
+    assignment
diff --git a/syntax.md b/syntax.md
index 9d11600..083103c 100644
--- a/syntax.md
+++ b/syntax.md
@@ -3,19 +3,6 @@
 ### Statements
 
 ```PEG
-AssignmentStatement     ← AssignmentStatementBody ';'
-AssignmentStatementBody ← AssignmentTargetExpression '=' Expression /
-                          AssignmentTargetExpression '+=' Expression /
-                          AssignmentTargetExpression '-=' Expression /
-                          AssignmentTargetExpression '*=' Expression /
-                          AssignmentTargetExpression '/=' Expression /
-                          AssignmentTargetExpression '%=' Expression /
-                          AssignmentTargetExpression '&=' Expression /
-                          AssignmentTargetExpression '^=' Expression /
-                          AssignmentTargetExpression '|=' Expression /
-                          AssignmentTargetExpression '++' /
-                          AssignmentTargetExpression '--'
-
 ExpressionStatement     ← Expression ';'
 ```
 
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