diff options
| -rw-r--r-- | shell/evaluate.mu | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/shell/evaluate.mu b/shell/evaluate.mu index 6e2f5ad7..68ec10fe 100644 --- a/shell/evaluate.mu +++ b/shell/evaluate.mu @@ -2,7 +2,9 @@ # we never modify `_in-ah` or `env` # ignore args past 'trace' on a first reading; they're for the environment not the language # 'call-number' is just for showing intermediate progress; this is a _slow_ interpreter -# side-effect: prints to real screen if not in a test (screen-cell != 0) +# side-effects if not in a test (screen-cell != 0): +# prints intermediate states of the screen to real screen +# stops if a keypress is encountered fn evaluate _in-ah: (addr handle cell), _out-ah: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell), call-number: int { # stack overflow? # disable when enabling Really-debug-print check-stack @@ -34,6 +36,10 @@ fn evaluate _in-ah: (addr handle cell), _out-ah: (addr handle cell), env-h: (han compare screen-obj, 0 break-if-= var y/ecx: int <- render-screen 0/screen, screen-obj, 0x70/xmin, 1/ymin + var key/eax: byte <- read-key 0/keyboard + compare key, 0 + break-if-= + error trace, "key pressed; interrupting..." } # errors? skip { |