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type sandbox {
data: (handle gap-buffer)
value: (handle stream byte)
trace: (handle trace)
cursor-in-trace?: boolean
}
fn initialize-sandbox _self: (addr sandbox) {
var self/esi: (addr sandbox) <- copy _self
var data-ah/eax: (addr handle gap-buffer) <- get self, data
allocate data-ah
var data/eax: (addr gap-buffer) <- lookup *data-ah
initialize-gap-buffer data, 0x1000/4KB
var value-ah/eax: (addr handle stream byte) <- get self, value
populate-stream value-ah, 0x1000/4KB
var trace-ah/eax: (addr handle trace) <- get self, trace
allocate trace-ah
var trace/eax: (addr trace) <- lookup *trace-ah
initialize-trace trace, 0x100/lines
}
## some helpers for tests
fn initialize-sandbox-with _self: (addr sandbox), s: (addr array byte) {
var self/esi: (addr sandbox) <- copy _self
var data-ah/eax: (addr handle gap-buffer) <- get self, data
allocate data-ah
var data/eax: (addr gap-buffer) <- lookup *data-ah
initialize-gap-buffer-with data, s
}
fn allocate-sandbox-with _out: (addr handle sandbox), s: (addr array byte) {
var out/eax: (addr handle sandbox) <- copy _out
allocate out
var out-addr/eax: (addr sandbox) <- lookup *out
initialize-sandbox-with out-addr, s
}
fn add-grapheme-to-sandbox _self: (addr sandbox), c: grapheme {
var self/esi: (addr sandbox) <- copy _self
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var data/eax: (addr gap-buffer) <- lookup *data-ah
add-grapheme-at-gap data, c
}
fn delete-grapheme-before-cursor _self: (addr sandbox) {
var self/esi: (addr sandbox) <- copy _self
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var data/eax: (addr gap-buffer) <- lookup *data-ah
delete-before-gap data
}
fn render-sandbox screen: (addr screen), _self: (addr sandbox), _x: int, _y: int {
clear-screen screen
var self/esi: (addr sandbox) <- copy _self
# data
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var _data/eax: (addr gap-buffer) <- lookup *data-ah
var data/edx: (addr gap-buffer) <- copy _data
var x/eax: int <- copy _x
var y/ecx: int <- copy _y
var cursor-in-sandbox?/ebx: boolean <- copy 0/false
{
var cursor-in-trace?/eax: (addr boolean) <- get self, cursor-in-trace?
compare *cursor-in-trace?, 0/false
break-if-!=
cursor-in-sandbox? <- copy 1/true
}
x, y <- render-gap-buffer-wrapping-right-then-down screen, data, x, y, 0x20/xmax, 0x20/ymax, x, y, cursor-in-sandbox?
y <- increment
# trace
var trace-ah/eax: (addr handle trace) <- get self, trace
var _trace/eax: (addr trace) <- lookup *trace-ah
var trace/edx: (addr trace) <- copy _trace
var cursor-in-trace?/eax: (addr boolean) <- get self, cursor-in-trace?
y <- render-trace screen, trace, _x, y, 0x20/xmax, 0x20/ymax, *cursor-in-trace?
# value
var value-ah/eax: (addr handle stream byte) <- get self, value
var _value/eax: (addr stream byte) <- lookup *value-ah
var value/esi: (addr stream byte) <- copy _value
var done?/eax: boolean <- stream-empty? value
compare done?, 0/false
{
break-if-=
return
}
var x/eax: int <- copy 0
x, y <- draw-text-wrapping-right-then-down screen, "=> ", _x, y, 0x20/xmax, 0x20/ymax, _x, y, 7/fg, 0/bg
var x2/edx: int <- copy x
var dummy/eax: int <- draw-stream-rightward screen, value, x2, 0x30/xmax, y, 7/fg=grey, 0/bg
}
fn edit-sandbox _self: (addr sandbox), key: byte {
var self/esi: (addr sandbox) <- copy _self
var g/edx: grapheme <- copy key
{
compare g, 8/backspace
break-if-!=
delete-grapheme-before-cursor self
return
}
# running code
{
compare g, 0x12/ctrl-r
break-if-!=
# ctrl-r: run function outside sandbox
# required: fn (addr screen), (addr keyboard)
# Mu will pass in the real screen and keyboard.
return
}
{
compare g, 0x13/ctrl-s
break-if-!=
# ctrl-s: run sandbox(es)
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var _data/eax: (addr gap-buffer) <- lookup *data-ah
var data/ecx: (addr gap-buffer) <- copy _data
var value-ah/eax: (addr handle stream byte) <- get self, value
var _value/eax: (addr stream byte) <- lookup *value-ah
var value/edx: (addr stream byte) <- copy _value
var trace-ah/eax: (addr handle trace) <- get self, trace
var trace/eax: (addr trace) <- lookup *trace-ah
clear-trace trace
run data, value, trace
return
}
# arrow keys
{
compare g, 0x4/ctrl-d
break-if-!=
# ctrl-d: cursor down (into trace if it makes sense)
var cursor-in-trace?/eax: (addr boolean) <- get self, cursor-in-trace?
# if cursor in input, check if we need to switch to trace
{
compare *cursor-in-trace?, 0/false
break-if-!=
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var data/eax: (addr gap-buffer) <- lookup *data-ah
var at-bottom?/eax: boolean <- cursor-on-final-line? data
compare at-bottom?, 0/false
break-if-=
var cursor-in-trace?/eax: (addr boolean) <- get self, cursor-in-trace?
copy-to *cursor-in-trace?, 1/true
return
}
# if cursor in trace, send cursor to trace
{
compare cursor-in-trace?, 0/false
break-if-=
var trace-ah/eax: (addr handle trace) <- get self, trace
var trace/eax: (addr trace) <- lookup *trace-ah
edit-trace trace, g
return
}
# otherwise send cursor to input
var data-ah/eax: (addr handle gap-buffer) <- get self, data
var data/eax: (addr gap-buffer) <- lookup *data-ah
edit-gap-buffer data, g
return
}
# default: insert character
add-grapheme-to-sandbox self, g
}
fn run in: (addr gap-buffer), out: (addr stream byte), trace: (addr trace) {
var read-result-storage: (handle cell)
var read-result/esi: (addr handle cell) <- address read-result-storage
read-cell in, read-result, trace
var error?/eax: boolean <- has-errors? trace
{
compare error?, 0/false
break-if-=
return
}
# TODO: eval
print-cell read-result, out
}
fn test-run-integer {
var sandbox-storage: sandbox
var sandbox/esi: (addr sandbox) <- address sandbox-storage
initialize-sandbox sandbox
# type "1"
edit-sandbox sandbox, 0x31/1
# eval
edit-sandbox sandbox, 0x13/ctrl-s
# setup: screen
var screen-on-stack: screen
var screen/edi: (addr screen) <- address screen-on-stack
initialize-screen screen, 0xa, 4
#
render-sandbox screen, sandbox, 0/x, 0/y
check-screen-row screen, 0/y, "1 ", "F - test-run-integer/0"
check-screen-row screen, 1/y, "=> 1 ", "F - test-run-integer/1"
}
fn test-run-error-invalid-integer {
var sandbox-storage: sandbox
var sandbox/esi: (addr sandbox) <- address sandbox-storage
initialize-sandbox sandbox
# type "1a"
edit-sandbox sandbox, 0x31/1
edit-sandbox sandbox, 0x61/a
# eval
edit-sandbox sandbox, 0x13/ctrl-s
# setup: screen
var screen-on-stack: screen
var screen/edi: (addr screen) <- address screen-on-stack
initialize-screen screen, 0x10, 4
#
render-sandbox screen, sandbox, 0/x, 0/y
check-screen-row screen, 0/y, "1a ", "F - test-run-error-invalid-integer/0"
check-screen-row screen, 1/y, "invalid number ", "F - test-run-error-invalid-integer/1"
}
fn test-run-move-cursor-into-trace {
var sandbox-storage: sandbox
var sandbox/esi: (addr sandbox) <- address sandbox-storage
initialize-sandbox sandbox
# type "1a"
edit-sandbox sandbox, 0x31/1
edit-sandbox sandbox, 0x61/a
# eval
edit-sandbox sandbox, 0x13/ctrl-s
# setup: screen
var screen-on-stack: screen
var screen/edi: (addr screen) <- address screen-on-stack
initialize-screen screen, 0x10, 4
#
render-sandbox screen, sandbox, 0/x, 0/y
check-screen-row screen, 0/y, "1a ", "F - test-run-move-cursor-into-trace/pre-0"
check-background-color-in-screen-row screen, 7/bg=cursor, 0/y, " | ", "F - test-run-move-cursor-into-trace/pre-0/cursor"
check-screen-row screen, 1/y, "invalid number ", "F - test-run-move-cursor-into-trace/pre-1"
check-background-color-in-screen-row screen, 7/bg=cursor, 1/y, " ", "F - test-run-move-cursor-into-trace/pre-1/cursor"
# move cursor down
edit-sandbox sandbox, 4/ctrl-d
#
render-sandbox screen, sandbox, 0/x, 0/y
check-screen-row screen, 0/y, "1a ", "F - test-run-move-cursor-into-trace/0"
check-background-color-in-screen-row screen, 7/bg=cursor, 0/y, " ", "F - test-run-move-cursor-into-trace/0/cursor"
check-screen-row screen, 1/y, "invalid number ", "F - test-run-move-cursor-into-trace/1"
check-background-color-in-screen-row screen, 7/bg=cursor, 1/y, "|||||||||||||| ", "F - test-run-move-cursor-into-trace/1/cursor"
}
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