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Move explanation that references lexical grammar to the grammar

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Reword so that the references to things above/below are up to date and a
bit more specific.
This commit is contained in:
Carol Nichols 2015-04-28 22:02:53 -04:00
parent 3e521bfd96
commit 0ddee94cfe
2 changed files with 6 additions and 5 deletions
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6
src/doc/grammar.md
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@ -179,6 +179,12 @@ lit_suffix : ident;
literal : [ string_lit | char_lit | byte_string_lit | byte_lit | num_lit | bool_lit ] lit_suffix ?;
```
The optional `lit_suffix` production is only used for certain numeric literals,
but is reserved for future extension. That is, the above gives the lexical
grammar, but a Rust parser will reject everything but the 12 special cases
mentioned in [Number literals](reference.html#number-literals) in the
reference.
#### Character and string literals
```antlr

5
src/doc/reference.md
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@ -130,11 +130,6 @@ of tokens, that immediately and directly denotes the value it evaluates to,
rather than referring to it by name or some other evaluation rule. A literal is
a form of constant expression, so is evaluated (primarily) at compile time.
The optional suffix is only used for certain numeric literals, but is
reserved for future extension, that is, the above gives the lexical
grammar, but a Rust parser will reject everything but the 12 special
cases mentioned in [Number literals](#number-literals) below.
#### Examples
##### Characters and strings