From 649ae829220d6ddd8758d24c3bc2ea7d43e788d6 Mon Sep 17 00:00:00 2001 From: Antonio Navarro Perez Date: Wed, 20 Mar 2024 11:15:48 +0100 Subject: feat: Add simple Dump creation and recovery. Memory Dump functionality that can restore the previous VM state. It dumps *global* variables, the only ones defining the program state. The dump depends on the program itself, and on the index system, which right now is defined by the variable order. Signed-off-by: Antonio Navarro Perez --- parser/dump_test.go | 48 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 parser/dump_test.go (limited to 'parser/dump_test.go') diff --git a/parser/dump_test.go b/parser/dump_test.go new file mode 100644 index 0000000..db86c48 --- /dev/null +++ b/parser/dump_test.go @@ -0,0 +1,48 @@ +package parser_test + +import ( + "testing" + + "github.com/mvertes/parscan/parser" +) + +func TestDump(t *testing.T) { + initProgram := "var a int = 2+1; a" + interp := parser.NewInterpreter(GoScanner) + r, e := interp.Eval(initProgram) + t.Log(r, e) + if e != nil { + t.Fatal(e) + } + + r, e = interp.Eval("a = 100") + t.Log(r, e) + if e != nil { + t.Fatal(e) + } + + d := interp.Dump() + t.Log(d) + + interp = parser.NewInterpreter(GoScanner) + r, e = interp.Eval(initProgram) + t.Log(r, e) + if e != nil { + t.Fatal(e) + } + + e = interp.ApplyDump(d) + if e != nil { + t.Fatal(e) + } + + r, e = interp.Eval("a = a + 1;a") + t.Log(r, e) + if e != nil { + t.Fatal(e) + } + + if r.Interface() != int(101) { + t.Fatalf("unexpected result: %v", r) + } +} -- cgit v1.2.3