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shell: restore bindings after restart

This commit is contained in:
Kartik K. Agaram 2021-04-15 21:40:48 -07:00
parent 9d367ec2ed
commit 5b20f177b6
2 changed files with 52 additions and 0 deletions
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37
shell/global.mu
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@ -44,6 +44,27 @@ fn initialize-globals _self: (addr global-table) {
# keep sync'd with render-primitives
}
fn load-globals in: (addr handle cell), self: (addr global-table) {
var remaining-ah/esi: (addr handle cell) <- copy in
{
var _remaining/eax: (addr cell) <- lookup *remaining-ah
var remaining/ecx: (addr cell) <- copy _remaining
var done?/eax: boolean <- nil? remaining
compare done?, 0/false
break-if-!=
var curr-ah/eax: (addr handle cell) <- get remaining, left
var curr/eax: (addr cell) <- lookup *curr-ah
remaining-ah <- get remaining, right
var name-ah/ecx: (addr handle cell) <- get curr, left
var value-ah/ebx: (addr handle cell) <- get curr, right
var name/eax: (addr cell) <- lookup *name-ah
var name-data-ah/eax: (addr handle stream byte) <- get name, text-data
var name-data/eax: (addr stream byte) <- lookup *name-data-ah
append-global-binding-of-stream self, name-data, *value-ah
loop
}
}
fn write-globals out: (addr stream byte), _self: (addr global-table) {
var self/esi: (addr global-table) <- copy _self
write out, " (globals . (\n"
@ -227,6 +248,22 @@ fn append-global _self: (addr global-table), name: (addr array byte), value: (ha
copy-handle value, curr-value-ah
}
fn append-global-binding-of-stream _self: (addr global-table), name: (addr stream byte), value: (handle cell) {
var self/esi: (addr global-table) <- copy _self
var final-index-addr/ecx: (addr int) <- get self, final-index
increment *final-index-addr
var curr-index/ecx: int <- copy *final-index-addr
var data-ah/eax: (addr handle array global) <- get self, data
var data/eax: (addr array global) <- lookup *data-ah
var curr-offset/esi: (offset global) <- compute-offset data, curr-index
var curr/esi: (addr global) <- index data, curr-offset
var curr-name-ah/eax: (addr handle array byte) <- get curr, name
rewind-stream name
stream-to-array name, curr-name-ah
var curr-value-ah/eax: (addr handle cell) <- get curr, value
copy-handle value, curr-value-ah
}
fn lookup-symbol-in-globals _sym: (addr cell), out: (addr handle cell), _globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
var sym/eax: (addr cell) <- copy _sym
var sym-name-ah/eax: (addr handle stream byte) <- get sym, text-data

15
shell/main.mu
View File

@ -48,6 +48,21 @@ fn load-state data-disk: (addr disk), _sandbox: (addr sandbox), globals: (addr g
break-if-!=
return
}
# load globals from assoc(initial-root, 'globals)
var globals-literal-storage: (handle cell)
var globals-literal-ah/eax: (addr handle cell) <- address globals-literal-storage
new-symbol globals-literal-ah, "globals"
var globals-literal/eax: (addr cell) <- lookup *globals-literal-ah
var globals-cell-storage: (handle cell)
var globals-cell-ah/edx: (addr handle cell) <- address globals-cell-storage
lookup-symbol globals-literal, globals-cell-ah, *initial-root, 0/no-globals, 0/no-trace, 0/no-screen, 0/no-keyboard
var globals-cell/eax: (addr cell) <- lookup *globals-cell-ah
compare globals-cell, 0
{
break-if-!=
return
}
load-globals globals-cell-ah, globals
# sandbox = assoc(initial-root, 'sandbox)
var sandbox-literal-storage: (handle cell)
var sandbox-literal-ah/eax: (addr handle cell) <- address sandbox-literal-storage