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comparisons and booleans

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This commit is contained in:
Chuck Smith
2024-02-05 16:58:59 -05:00
parent b4cc771baa
commit dcc869a6e2
5 changed files with 233 additions and 6 deletions
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83
compiler/compiler_test.go
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@@ -73,6 +73,89 @@ func TestIntegerArithmetic(t *testing.T) {
runCompilerTests(t, tests)
}
func TestBooleanExpressions(t *testing.T) {
tests := []compilerTestCase{
{
input: "true",
expectedConstants: []interface{}{},
expectedInstructions: []code.Instructions{
code.Make(code.OpTrue),
code.Make(code.OpPop),
},
},
{
input: "false",
expectedConstants: []interface{}{},
expectedInstructions: []code.Instructions{
code.Make(code.OpFalse),
code.Make(code.OpPop),
},
},
{
input: "1 > 2",
expectedConstants: []interface{}{1, 2},
expectedInstructions: []code.Instructions{
code.Make(code.OpConstant, 0),
code.Make(code.OpConstant, 1),
code.Make(code.OpGreaterThan),
code.Make(code.OpPop),
},
},
{
input: "1 < 2",
expectedConstants: []interface{}{2, 1},
expectedInstructions: []code.Instructions{
code.Make(code.OpConstant, 0),
code.Make(code.OpConstant, 1),
code.Make(code.OpGreaterThan),
code.Make(code.OpPop),
},
},
{
input: "1 == 2",
expectedConstants: []interface{}{1, 2},
expectedInstructions: []code.Instructions{
code.Make(code.OpConstant, 0),
code.Make(code.OpConstant, 1),
code.Make(code.OpEqual),
code.Make(code.OpPop),
},
},
{
input: "1 != 2",
expectedConstants: []interface{}{1, 2},
expectedInstructions: []code.Instructions{
code.Make(code.OpConstant, 0),
code.Make(code.OpConstant, 1),
code.Make(code.OpNotEqual),
code.Make(code.OpPop),
},
},
{
input: "true == false",
expectedConstants: []interface{}{},
expectedInstructions: []code.Instructions{
code.Make(code.OpTrue),
code.Make(code.OpFalse),
code.Make(code.OpEqual),
code.Make(code.OpPop),
},
},
{
input: "true != false",
expectedConstants: []interface{}{},
expectedInstructions: []code.Instructions{
code.Make(code.OpTrue),
code.Make(code.OpFalse),
code.Make(code.OpNotEqual),
code.Make(code.OpPop),
},
},
}
runCompilerTests(t, tests)
}
func runCompilerTests(t *testing.T, tests []compilerTestCase) {
t.Helper()