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| author | June McEnroe <june@causal.agency> | 2020-12-30 18:31:36 -0500 |
|---|---|---|
| committer | June McEnroe <june@causal.agency> | 2020-12-30 18:31:36 -0500 |
| commit | b3d41d6df5a1f49ea7f3a2be1279a1c63e2d30fc (patch) | |
| tree | 1b5996c5ef866eb77ded663c77950d365b6dc038 | |
| parent | Add make lexer (diff) | |
| download | src-b3d41d6df5a1f49ea7f3a2be1279a1c63e2d30fc.tar.gz src-b3d41d6df5a1f49ea7f3a2be1279a1c63e2d30fc.zip | |
Add postfix $ operator to bit
| -rw-r--r-- | bin/bit.y | 2 | ||||
| -rw-r--r-- | bin/man1/bit.1 | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/bin/bit.y b/bin/bit.y index 7843419e..583a0280 100644 --- a/bin/bit.y +++ b/bin/bit.y @@ -35,6 +35,7 @@ static uint64_t vars[128]; %} +%left '$' %right '=' %left '|' %left '^' @@ -75,6 +76,7 @@ expr: | expr '^' expr { $$ = $1 ^ $3; } | expr '|' expr { $$ = $1 | $3; } | Var '=' expr { $$ = vars[$1] = $3; } + | expr '$' { $$ = $1; } ; %% diff --git a/bin/man1/bit.1 b/bin/man1/bit.1 index b61bc704..06fd182f 100644 --- a/bin/man1/bit.1 +++ b/bin/man1/bit.1 @@ -1,4 +1,4 @@ -.Dd June 7, 2019 +.Dd December 30, 2020 .Dt BIT 1 .Os . @@ -34,6 +34,11 @@ The postfix operators .Sy T are used as constant multipliers. .It +The postfix operator +.Sy $ +is of lowest precedence and is equivalent to +wrapping the preceding expression in parentheses. +.It Single-letter (lower case) variables can be assigned. The variable |