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type cell {
type: int
# type 0: pair; the unit of lists, trees, DAGS or graphs
left: (handle cell)
right: (handle cell)
# type 1: number
number-data: float
# type 2: symbol
# type 3: string
text-data: (handle stream byte)
# type 4: primitive function
index-data: int
# type 5: screen
screen-data: (handle screen)
# TODO: array, (associative) table, stream
}
fn allocate-symbol _out: (addr handle cell) {
var out/eax: (addr handle cell) <- copy _out
allocate out
var out-addr/eax: (addr cell) <- lookup *out
var type/ecx: (addr int) <- get out-addr, type
copy-to *type, 2/symbol
var dest-ah/eax: (addr handle stream byte) <- get out-addr, text-data
populate-stream dest-ah, 0x40/max-symbol-size
}
fn initialize-symbol _out: (addr handle cell), val: (addr array byte) {
var out/eax: (addr handle cell) <- copy _out
var out-addr/eax: (addr cell) <- lookup *out
var dest-ah/eax: (addr handle stream byte) <- get out-addr, text-data
var dest/eax: (addr stream byte) <- lookup *dest-ah
write dest, val
}
fn new-symbol out: (addr handle cell), val: (addr array byte) {
allocate-symbol out
initialize-symbol out, val
}
fn allocate-number _out: (addr handle cell) {
var out/eax: (addr handle cell) <- copy _out
allocate out
var out-addr/eax: (addr cell) <- lookup *out
var type/ecx: (addr int) <- get out-addr, type
copy-to *type, 1/number
}
fn initialize-integer _out: (addr handle cell), n: int {
var out/eax: (addr handle cell) <- copy _out
var out-addr/eax: (addr cell) <- lookup *out
var dest-addr/eax: (addr float) <- get out-addr, number-data
var src/xmm0: float <- convert n
copy-to *dest-addr, src
}
fn new-integer out: (addr handle cell), n: int {
allocate-number out
initialize-integer out, n
}
fn initialize-float _out: (addr handle cell), n: float {
var out/eax: (addr handle cell) <- copy _out
var out-addr/eax: (addr cell) <- lookup *out
var dest-ah/eax: (addr float) <- get out-addr, number-data
var src/xmm0: float <- copy n
copy-to *dest-ah, src
}
fn new-float out: (addr handle cell), n: float {
allocate-number out
initialize-float out, n
}
fn allocate-pair _out: (addr handle cell) {
var out/eax: (addr handle cell) <- copy _out
allocate out
# new cells have type pair by default
}
fn initialize-pair _out: (addr handle cell), left: (handle cell), right: (handle cell) {
var out/eax: (addr handle cell) <- copy _out
var out-addr/eax: (addr cell) <- lookup *out
var dest-ah/ecx: (addr handle cell) <- get out-addr, left
copy-handle left, dest-ah
dest-ah <- get out-addr, right
copy-handle right, dest-ah
}
fn new-pair out: (addr handle cell), left: (handle cell), right: (handle cell) {
allocate-pair out
initialize-pair out, left, right
}
fn nil out: (addr handle cell) {
allocate-pair out
}
fn allocate-primitive-function _out: (addr handle cell) {
var out/eax: (addr handle cell) <- copy _out
allocate out
var out-addr/eax: (addr cell) <- lookup *out
var type/ecx: (addr int) <- get out-addr, type
copy-to *type, 4/primitive-function
}
fn initialize-primitive-function _out: (addr handle cell), n: int {
var out/eax: (addr handle cell) <- copy _out
var out-addr/eax: (addr cell) <- lookup *out
var dest-addr/eax: (addr int) <- get out-addr, index-data
var src/ecx: int <- copy n
copy-to *dest-addr, src
}
fn new-primitive-function out: (addr handle cell), n: int {
allocate-primitive-function out
initialize-primitive-function out, n
}
fn allocate-screen _out: (addr handle cell) {
var out/eax: (addr handle cell) <- copy _out
allocate out
var out-addr/eax: (addr cell) <- lookup *out
var dest-ah/ecx: (addr handle screen) <- get out-addr, screen-data
allocate dest-ah
var type/ecx: (addr int) <- get out-addr, type
copy-to *type, 5/screen
}
fn new-screen _out: (addr handle cell), width: int, height: int {
var out/eax: (addr handle cell) <- copy _out
allocate-screen out
var out-addr/eax: (addr cell) <- lookup *out
var dest-ah/eax: (addr handle screen) <- get out-addr, screen-data
var dest-addr/eax: (addr screen) <- lookup *dest-ah
initialize-screen dest-addr, width, height
}
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