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authorKartik K. Agaram <vc@akkartik.com>2021-02-28 18:47:34 -0800
committerKartik K. Agaram <vc@akkartik.com>2021-02-28 18:47:34 -0800
commit755c02c4e6ebe42012ed88fcf63c554c53457e5e (patch)
tree1d04750d8077dd241c57437e9a48aa1601d87bc5 /baremetal/shell
parent3ce9511621ec78eea2285551df105c4217019b44 (diff)
downloadmu-755c02c4e6ebe42012ed88fcf63c554c53457e5e.tar.gz
7827
Diffstat (limited to 'baremetal/shell')
-rw-r--r--baremetal/shell/parse.mu14
-rw-r--r--baremetal/shell/read.mu2
2 files changed, 10 insertions, 6 deletions
diff --git a/baremetal/shell/parse.mu b/baremetal/shell/parse.mu
index 7e5aafc3..ab7f440d 100644
--- a/baremetal/shell/parse.mu
+++ b/baremetal/shell/parse.mu
@@ -1,7 +1,15 @@
+fn parse-input tokens: (addr stream cell), out: (addr handle cell), trace: (addr trace) {
+  rewind-stream tokens
+  parse-sexpression tokens, out, trace
+  var empty?/eax: boolean <- stream-empty? tokens
+  compare empty?, 0/false
+  break-if-!=
+  error trace, "unexpected tokens at end; only type in a single expression at a time"
+}
+
 fn parse-sexpression tokens: (addr stream cell), _out: (addr handle cell), trace: (addr trace) {
   trace-text trace, "read", "parse"
   trace-lower trace
-  rewind-stream tokens
   var curr-token-storage: cell
   var curr-token/ecx: (addr cell) <- address curr-token-storage
   var empty?/eax: boolean <- stream-empty? tokens
@@ -14,10 +22,6 @@ fn parse-sexpression tokens: (addr stream cell), _out: (addr handle cell), trace
   read-from-stream tokens, curr-token
   parse-atom curr-token, _out, trace
   trace-higher trace
-  var empty?/eax: boolean <- stream-empty? tokens
-  compare empty?, 0/false
-  break-if-!=
-  error trace, "unexpected tokens at end; only type in a single expression at a time"
 }
 
 fn parse-atom _curr-token: (addr cell), _out: (addr handle cell), trace: (addr trace) {
diff --git a/baremetal/shell/read.mu b/baremetal/shell/read.mu
index e49fbbac..d3e1dc86 100644
--- a/baremetal/shell/read.mu
+++ b/baremetal/shell/read.mu
@@ -11,5 +11,5 @@ fn read-cell in: (addr gap-buffer), out: (addr handle cell), trace: (addr trace)
   }
   # TODO: insert parens
   # TODO: transform infix
-  parse-sexpression tokens, out, trace
+  parse-input tokens, out, trace
 }