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| author | Case Duckworth | 2024-03-23 15:52:53 -0500 |
|---|---|---|
| committer | Case Duckworth | 2024-03-23 15:52:53 -0500 |
| commit | 52b8d26e8c86fed84edae447169962dfbbec1659 (patch) | |
| tree | 3a9eb938384e8c286739849b297d738dcb2b6750 | |
| parent | Improve repl (diff) | |
| download | lam-52b8d26e8c86fed84edae447169962dfbbec1659.tar.gz lam-52b8d26e8c86fed84edae447169962dfbbec1659.zip | |
Read negative numbers
| -rw-r--r-- | read.lua | 8 |
1 files changed, 4 insertions, 4 deletions
| diff --git a/read.lua b/read.lua index c3f3f64..9561d9f 100644 --- a/read.lua +++ b/read.lua | |||
| @@ -124,13 +124,13 @@ read.readtable = { | |||
| 124 | ["."] = function(chars) return pop(chars), "dot", chars end, | 124 | ["."] = function(chars) return pop(chars), "dot", chars end, |
| 125 | ["\""] = consume_string, | 125 | ["\""] = consume_string, |
| 126 | [";"] = consume_comment, | 126 | [";"] = consume_comment, |
| 127 | -- ["#"] = | 127 | -- ["#"] = ..., |
| 128 | } | 128 | } |
| 129 | 129 | ||
| 130 | function read.scan (chars) | 130 | function read.scan (chars) |
| 131 | local chars = chars | 131 | local chars = chars |
| 132 | return function() | 132 | return function () |
| 133 | if #chars == 0 then return nil end | 133 | if not next(chars) then return nil end |
| 134 | local token, toktype = "", nil | 134 | local token, toktype = "", nil |
| 135 | while true do | 135 | while true do |
| 136 | if read.readtable[chars[1]] then | 136 | if read.readtable[chars[1]] then |
| @@ -139,7 +139,7 @@ function read.scan (chars) | |||
| 139 | return token, toktype | 139 | return token, toktype |
| 140 | elseif chars[1]:match("%s") then | 140 | elseif chars[1]:match("%s") then |
| 141 | chars = consume_whitespace(chars) | 141 | chars = consume_whitespace(chars) |
| 142 | elseif chars[1]:match("%d") then | 142 | elseif chars[1]:match("[%d-]") then |
| 143 | token, chars = consume_number(chars) | 143 | token, chars = consume_number(chars) |
| 144 | return token, "number" | 144 | return token, "number" |
| 145 | else | 145 | else |