Global variables (#378)

* global variables

* implemented type checking of global variable, added test case

* added a comment

* improvements based on Dave's suggestions

* improvements based on Jon's suggestions

* added test cases about global variable ordering
This commit is contained in:
Jeremy G. Siek
2021-03-15 16:06:27 -04:00
committed by GitHub
parent 41786eae25
commit ced98ef021
22 changed files with 822 additions and 3 deletions
+26
View File
@@ -0,0 +1,26 @@
********** source program **********
var Int : x = y
var Int : y = 0
fn main () -> Int {
return x;
}
********** type checking **********
--- step exp Int --->
--- step exp Int --->
--- step exp Int --->
--- step exp Int --->
--- step exp Int --->
--- step exp Int --->
********** type checking complete **********
var Int : x = y
var Int : y = 0
fn main () -> Int {
return x;
}
********** starting execution **********
********** initializing globals **********
--- step exp y --->
8: could not find `y`
EXIT CODE: 255