🐛 pretty printing of Reset and parsing of cx (#5)

* fix missing ; for Reset

* Add cx alias for CX

---------

Co-authored-by: liam <lgh@e.email>

Author: contra-bit

src/parse.jl

@@ -53,7 +53,7 @@ RBNF.@parser QASMLang begin
     uop = (inst | ugate | csemantic_gate)
     inst::Instruction := [name = id, ['(', [cargs = explist].?, ')'].?, qargs = bitlist, ';']
     ugate::UGate := [:U, '(', z1 = exp, ',', y = exp, ',', z2 = exp, ')', qarg = bit, ';']
-    csemantic_gate::CXGate := [:CX, ctrl = bit, ',', qarg = bit, ';']
+    csemantic_gate::CXGate := [:CX | :cx, ctrl = bit, ',', qarg = bit, ';']
 
     idlist = @direct_recur begin
         init = [id]

src/types.jl

@@ -271,6 +271,7 @@ end
 function print_qasm(io::IO, stmt::Reset)
     print_kw(io, "reset ")
     print_qasm(io, stmt.qarg)
+    print(io, ";")
 end
 
 function print_qasm(io::IO, stmt::Measure)

test/runtests.jl

@@ -59,6 +59,7 @@ end
     measure q[0] -> c0[0];
     if(c0==1) z q[2];
     u3(0.1 + 0.2, 0.2, 0.3) q[0];
+    reset q[0];
     """
 
     ast = OpenQASM.parse(qasm)
@@ -266,6 +267,14 @@ end
         @test inst.cargs[3].str == "0.3"
     end
 
+    @testset "reset" begin
+      reset = ast.prog[15]
+      @test reset isa  Reset
+      @test reset.qarg.name.str == "q"
+      @test reset.qarg.address.str == "0"
+      @test string(reset) == "reset q[0];"
+    end
+
 end
 
 @testset "cmp_ast" begin