lispToMmix/js/types.js

40 lines
1.4 KiB
JavaScript
Raw Normal View History

2022-10-14 19:30:47 +02:00
import { error } from "./lexer.js";
export const COMPUTE_TYPES = {
UINT: 0,
INT: 1,
FLOAT: 2
}
export const getOutType = (...types)=>Math.max(...types);
export const convertType = (typein,typeout,reg) => {
if(typein == typeout) return "//no type conversion nessesary";
if(typein == COMPUTE_TYPES.UINT && typeout == COMPUTE_TYPES.INT){
return "//no type conversion nessesary (u -> i)";
}
if(typein == COMPUTE_TYPES.INT && typeout == COMPUTE_TYPES.UINT){
return `SET $${reg + 1},#7fffffffffffffff
AND $${reg},$${reg},$${reg + 1} convert i -> u`;
}
if(typein == COMPUTE_TYPES.INT && typeout == COMPUTE_TYPES.FLOAT){
return ` FLOT $${reg},$${reg} convert i -> f`;
}
if(typein == COMPUTE_TYPES.UINT && typeout == COMPUTE_TYPES.FLOAT){
return `SET $${reg + 1},#7fffffffffffffff
AND $${reg},$${reg},$${reg + 1}
FLOT $${reg},$${reg} convert i -> f`;
}
if(typein == COMPUTE_TYPES.FLOAT && typeout == COMPUTE_TYPES.INT){
return ` FIX $${reg},$${reg} convert f -> i`;
}
if(typein == COMPUTE_TYPES.FLOAT && typeout == COMPUTE_TYPES.UINT){
return ` FLOT $${reg},$${reg} convert i -> f
SET $${reg + 1},#7fffffffffffffff
AND $${reg},$${reg},$${reg+1}`;
}
console.log(typein,typeout)
error("[System error] Could not find a possible Type conversion.")
}