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Remove redundant code block and update comment.

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By patch zoren here: https://github.com/llvm-mirror/llvm/pull/20

llvm-svn: 296968
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Sylvestre Ledru 2017-03-04 14:00:44 +00:00
parent f1fad05f29
commit 7ec49d130a
1 changed files with 1 additions and 13 deletions
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docs/tutorial/OCamlLangImpl5.rst
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@ -103,19 +103,7 @@ Parser Extensions for If/Then/Else
Now that we have the relevant tokens coming from the lexer and we have
the AST node to build, our parsing logic is relatively straightforward.
First we define a new parsing function:
.. code-block:: ocaml
let rec parse_primary = parser
...
(* ifexpr ::= 'if' expr 'then' expr 'else' expr *)
| [< 'Token.If; c=parse_expr;
'Token.Then ?? "expected 'then'"; t=parse_expr;
'Token.Else ?? "expected 'else'"; e=parse_expr >] ->
Ast.If (c, t, e)
Next we hook it up as a primary expression:
Next we add a new case for parsing a if-expression as a primary expression:
.. code-block:: ocaml