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author | Kartik Agaram <vc@akkartik.com> | 2020-06-05 13:58:28 -0700 |
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committer | Kartik Agaram <vc@akkartik.com> | 2020-06-05 13:58:28 -0700 |
commit | d7f41fd02a20504b858793f033bcfce994fe454d (patch) | |
tree | 17fceb4a410893edca099411755d3ed8e3f8f77f /prototypes/browse/20/main.mu | |
parent | b3998440f35026a0ad45e85cc6de0e8cc62b00f1 (diff) | |
download | mu-d7f41fd02a20504b858793f033bcfce994fe454d.tar.gz |
6469
Let's start committing new prototype directories *before* we start hacking on them. Version control is useful right from the draft when programming in a language without any error messages.
Diffstat (limited to 'prototypes/browse/20/main.mu')
-rw-r--r-- | prototypes/browse/20/main.mu | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/prototypes/browse/20/main.mu b/prototypes/browse/20/main.mu new file mode 100644 index 00000000..6457ca81 --- /dev/null +++ b/prototypes/browse/20/main.mu @@ -0,0 +1,50 @@ +fn main args: (addr array (addr array byte)) -> exit-status/ebx: int { + # initialize fs from args[1] + var filename/eax: (addr array byte) <- first-arg args + var file-state-storage: file-state + var fs/esi: (addr file-state) <- address file-state-storage + init-file-state fs, filename + # + enable-screen-grid-mode + enable-keyboard-immediate-mode + # initialize screen state from screen size + var screen-position-state-storage: screen-position-state + var screen-position-state/eax: (addr screen-position-state) <- address screen-position-state-storage + init-screen-position-state screen-position-state + { + render fs, screen-position-state + var key/eax: byte <- read-key + } + enable-keyboard-type-mode + enable-screen-type-mode + exit-status <- copy 0 +} + +fn render fs: (addr file-state), state: (addr screen-position-state) { + start-drawing state + render-normal fs, state +} + +fn render-normal fs: (addr file-state), state: (addr screen-position-state) { + { + # if done-drawing?(state) break + var done?/eax: boolean <- done-drawing? state + compare done?, 0 # false + break-if-!= + # + var c/eax: byte <- next-char fs + # if (c == EOF) break + compare c, 0xffffffff # EOF marker + break-if-= + # + print-byte c + # + loop + } +} + +fn first-arg args-on-stack: (addr array (addr array byte)) -> out/eax: (addr array byte) { + var args/eax: (addr array (addr array byte)) <- copy args-on-stack + var result/eax: (addr addr array byte) <- index args, 1 + out <- copy *result +} |