Beispiel #1
0
func TestCompiler(t *testing.T) {
	for id, test := range []struct {
		ast    *nodePattern
		result Glob
		sep    []rune
	}{
		{
			ast:    pattern(&nodeText{text: "abc"}),
			result: match.NewText("abc"),
		},
		{
			ast:    pattern(&nodeAny{}),
			sep:    separators,
			result: match.NewAny(separators),
		},
		{
			ast:    pattern(&nodeAny{}),
			result: match.NewSuper(),
		},
		{
			ast:    pattern(&nodeSuper{}),
			result: match.NewSuper(),
		},
		{
			ast:    pattern(&nodeSingle{}),
			sep:    separators,
			result: match.NewSingle(separators),
		},
		{
			ast: pattern(&nodeRange{
				lo:  'a',
				hi:  'z',
				not: true,
			}),
			result: match.NewRange('a', 'z', true),
		},
		{
			ast: pattern(&nodeList{
				chars: "abc",
				not:   true,
			}),
			result: match.NewList([]rune{'a', 'b', 'c'}, true),
		},
		{
			ast: pattern(&nodeAny{}, &nodeSingle{}, &nodeSingle{}, &nodeSingle{}),
			sep: separators,
			result: match.EveryOf{Matchers: match.Matchers{
				match.NewMin(3),
				match.NewContains(string(separators), true),
			}},
		},
		{
			ast:    pattern(&nodeAny{}, &nodeSingle{}, &nodeSingle{}, &nodeSingle{}),
			result: match.NewMin(3),
		},
		{
			ast: pattern(&nodeAny{}, &nodeText{text: "abc"}, &nodeSingle{}),
			sep: separators,
			result: match.NewBTree(
				match.NewRow(
					4,
					match.Matchers{
						match.NewText("abc"),
						match.NewSingle(separators),
					}...,
				),
				match.NewAny(separators),
				nil,
			),
		},
		{
			ast: pattern(&nodeSuper{}, &nodeSingle{}, &nodeText{text: "abc"}, &nodeSingle{}),
			sep: separators,
			result: match.NewBTree(
				match.NewRow(
					5,
					match.Matchers{
						match.NewSingle(separators),
						match.NewText("abc"),
						match.NewSingle(separators),
					}...,
				),
				match.NewSuper(),
				nil,
			),
		},
		{
			ast:    pattern(&nodeAny{}, &nodeText{text: "abc"}),
			result: match.NewSuffix("abc"),
		},
		{
			ast:    pattern(&nodeText{text: "abc"}, &nodeAny{}),
			result: match.NewPrefix("abc"),
		},
		{
			ast:    pattern(&nodeText{text: "abc"}, &nodeAny{}, &nodeText{text: "def"}),
			result: match.NewPrefixSuffix("abc", "def"),
		},
		{
			ast:    pattern(&nodeAny{}, &nodeAny{}, &nodeAny{}, &nodeText{text: "abc"}, &nodeAny{}, &nodeAny{}),
			result: match.NewContains("abc", false),
		},
		{
			ast: pattern(&nodeAny{}, &nodeAny{}, &nodeAny{}, &nodeText{text: "abc"}, &nodeAny{}, &nodeAny{}),
			sep: separators,
			result: match.NewBTree(
				match.NewText("abc"),
				match.NewAny(separators),
				match.NewAny(separators),
			),
		},
		{
			ast: pattern(&nodeSuper{}, &nodeSingle{}, &nodeText{text: "abc"}, &nodeSuper{}, &nodeSingle{}),
			result: match.NewBTree(
				match.NewText("abc"),
				match.NewMin(1),
				match.NewMin(1),
			),
		},
		{
			ast:    pattern(anyOf(&nodeText{text: "abc"})),
			result: match.NewText("abc"),
		},
		{
			ast:    pattern(anyOf(pattern(anyOf(pattern(&nodeText{text: "abc"}))))),
			result: match.NewText("abc"),
		},
		{
			ast: pattern(anyOf(
				pattern(
					&nodeText{text: "abc"},
					&nodeSingle{},
				),
				pattern(
					&nodeText{text: "abc"},
					&nodeList{chars: "def"},
				),
				pattern(
					&nodeText{text: "abc"},
				),
				pattern(
					&nodeText{text: "abc"},
				),
			)),
			result: match.NewBTree(
				match.NewText("abc"),
				nil,
				match.AnyOf{Matchers: match.Matchers{
					match.NewSingle(nil),
					match.NewList([]rune{'d', 'e', 'f'}, false),
					match.NewNothing(),
				}},
			),
		},
		{
			ast: pattern(
				&nodeRange{lo: 'a', hi: 'z'},
				&nodeRange{lo: 'a', hi: 'x', not: true},
				&nodeAny{},
			),
			result: match.NewBTree(
				match.NewRow(
					2,
					match.Matchers{
						match.NewRange('a', 'z', false),
						match.NewRange('a', 'x', true),
					}...,
				),
				nil,
				match.NewSuper(),
			),
		},
		{
			ast: pattern(anyOf(
				pattern(
					&nodeText{text: "abc"},
					&nodeList{chars: "abc"},
					&nodeText{text: "ghi"},
				),
				pattern(
					&nodeText{text: "abc"},
					&nodeList{chars: "def"},
					&nodeText{text: "ghi"},
				),
			)),
			result: match.NewRow(
				7,
				match.Matchers{
					match.NewText("abc"),
					match.AnyOf{Matchers: match.Matchers{
						match.NewList([]rune{'a', 'b', 'c'}, false),
						match.NewList([]rune{'d', 'e', 'f'}, false),
					}},
					match.NewText("ghi"),
				}...,
			),
		},
		//				{
		//			ast: pattern(
		//				anyOf(&nodeText{text: "a"}, &nodeText{text: "b"}),
		//				anyOf(&nodeText{text: "c"}, &nodeText{text: "d"}),
		//			),
		//			result: match.AnyOf{Matchers: match.Matchers{
		//				match.NewRow(Matchers: match.Matchers{match.Raw{"a"}, match.Raw{"c", 1}}),
		//				match.NewRow(Matchers: match.Matchers{match.Raw{"a"}, match.Raw{"d"}}),
		//				match.NewRow(Matchers: match.Matchers{match.Raw{"b"}, match.Raw{"c", 1}}),
		//				match.NewRow(Matchers: match.Matchers{match.Raw{"b"}, match.Raw{"d"}}),
		//			}},
		//		},
	} {
		m, err := compile(test.ast, test.sep)
		if err != nil {
			t.Errorf("compilation error: %s", err)
			continue
		}

		if !reflect.DeepEqual(m, test.result) {
			t.Errorf("#%d results are not equal:\nexp: %#v\nact: %#v", id, test.result, m)
			continue
		}
	}
}
Beispiel #2
0
func optimize(matcher match.Matcher) match.Matcher {
	switch m := matcher.(type) {

	case match.Any:
		if len(m.Separators) == 0 {
			return match.NewSuper()
		}

	case match.AnyOf:
		if len(m.Matchers) == 1 {
			return m.Matchers[0]
		}

		return m

	case match.List:
		if m.Not == false && len(m.List) == 1 {
			return match.NewText(string(m.List))
		}

		return m

	case match.BTree:
		m.Left = optimize(m.Left)
		m.Right = optimize(m.Right)

		r, ok := m.Value.(match.Text)
		if !ok {
			return m
		}

		leftNil := m.Left == nil
		rightNil := m.Right == nil

		if leftNil && rightNil {
			return match.NewText(r.Str)
		}

		_, leftSuper := m.Left.(match.Super)
		lp, leftPrefix := m.Left.(match.Prefix)

		_, rightSuper := m.Right.(match.Super)
		rs, rightSuffix := m.Right.(match.Suffix)

		if leftSuper && rightSuper {
			return match.NewContains(r.Str, false)
		}

		if leftSuper && rightNil {
			return match.NewSuffix(r.Str)
		}

		if rightSuper && leftNil {
			return match.NewPrefix(r.Str)
		}

		if leftNil && rightSuffix {
			return match.NewPrefixSuffix(r.Str, rs.Suffix)
		}

		if rightNil && leftPrefix {
			return match.NewPrefixSuffix(lp.Prefix, r.Str)
		}

		return m
	}

	return matcher
}
Beispiel #3
0
func TestCompiler(t *testing.T) {
	for id, test := range []struct {
		ast    *ast.Node
		result match.Matcher
		sep    []rune
	}{
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
			),
			result: match.NewText("abc"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
			),
			sep:    separators,
			result: match.NewAny(separators),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
			),
			result: match.NewSuper(),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindSuper, nil),
			),
			result: match.NewSuper(),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindSingle, nil),
			),
			sep:    separators,
			result: match.NewSingle(separators),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindRange, ast.Range{
					Lo:  'a',
					Hi:  'z',
					Not: true,
				}),
			),
			result: match.NewRange('a', 'z', true),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindList, ast.List{
					Chars: "abc",
					Not:   true,
				}),
			),
			result: match.NewList([]rune{'a', 'b', 'c'}, true),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindSingle, nil),
			),
			sep: separators,
			result: match.EveryOf{Matchers: match.Matchers{
				match.NewMin(3),
				match.NewContains(string(separators), true),
			}},
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindSingle, nil),
			),
			result: match.NewMin(3),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindSingle, nil),
			),
			sep: separators,
			result: match.NewBTree(
				match.NewRow(
					4,
					match.Matchers{
						match.NewText("abc"),
						match.NewSingle(separators),
					}...,
				),
				match.NewAny(separators),
				nil,
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindText, ast.Text{"/"}),
				ast.NewNode(ast.KindAnyOf, nil,
					ast.NewNode(ast.KindText, ast.Text{"z"}),
					ast.NewNode(ast.KindText, ast.Text{"ab"}),
				),
				ast.NewNode(ast.KindSuper, nil),
			),
			sep: separators,
			result: match.NewBTree(
				match.NewText("/"),
				nil,
				match.NewBTree(
					match.NewAnyOf(match.NewText("z"), match.NewText("ab")),
					nil,
					match.NewSuper(),
				),
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindSuper, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindSingle, nil),
			),
			sep: separators,
			result: match.NewBTree(
				match.NewRow(
					5,
					match.Matchers{
						match.NewSingle(separators),
						match.NewText("abc"),
						match.NewSingle(separators),
					}...,
				),
				match.NewSuper(),
				nil,
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
			),
			result: match.NewSuffix("abc"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindAny, nil),
			),
			result: match.NewPrefix("abc"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindText, ast.Text{"def"}),
			),
			result: match.NewPrefixSuffix("abc", "def"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
			),
			result: match.NewContains("abc", false),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindAny, nil),
				ast.NewNode(ast.KindAny, nil),
			),
			sep: separators,
			result: match.NewBTree(
				match.NewText("abc"),
				match.NewAny(separators),
				match.NewAny(separators),
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindSuper, nil),
				ast.NewNode(ast.KindSingle, nil),
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
				ast.NewNode(ast.KindSuper, nil),
				ast.NewNode(ast.KindSingle, nil),
			),
			result: match.NewBTree(
				match.NewText("abc"),
				match.NewMin(1),
				match.NewMin(1),
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindText, ast.Text{"abc"}),
			),
			result: match.NewText("abc"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAnyOf, nil,
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindAnyOf, nil,
							ast.NewNode(ast.KindPattern, nil,
								ast.NewNode(ast.KindText, ast.Text{"abc"}),
							),
						),
					),
				),
			),
			result: match.NewText("abc"),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAnyOf, nil,
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
						ast.NewNode(ast.KindSingle, nil),
					),
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
						ast.NewNode(ast.KindList, ast.List{Chars: "def"}),
					),
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
					),
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
					),
				),
			),
			result: match.NewBTree(
				match.NewText("abc"),
				nil,
				match.AnyOf{Matchers: match.Matchers{
					match.NewSingle(nil),
					match.NewList([]rune{'d', 'e', 'f'}, false),
					match.NewNothing(),
				}},
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindRange, ast.Range{Lo: 'a', Hi: 'z'}),
				ast.NewNode(ast.KindRange, ast.Range{Lo: 'a', Hi: 'x', Not: true}),
				ast.NewNode(ast.KindAny, nil),
			),
			result: match.NewBTree(
				match.NewRow(
					2,
					match.Matchers{
						match.NewRange('a', 'z', false),
						match.NewRange('a', 'x', true),
					}...,
				),
				nil,
				match.NewSuper(),
			),
		},
		{
			ast: ast.NewNode(ast.KindPattern, nil,
				ast.NewNode(ast.KindAnyOf, nil,
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
						ast.NewNode(ast.KindList, ast.List{Chars: "abc"}),
						ast.NewNode(ast.KindText, ast.Text{"ghi"}),
					),
					ast.NewNode(ast.KindPattern, nil,
						ast.NewNode(ast.KindText, ast.Text{"abc"}),
						ast.NewNode(ast.KindList, ast.List{Chars: "def"}),
						ast.NewNode(ast.KindText, ast.Text{"ghi"}),
					),
				),
			),
			result: match.NewRow(
				7,
				match.Matchers{
					match.NewText("abc"),
					match.AnyOf{Matchers: match.Matchers{
						match.NewList([]rune{'a', 'b', 'c'}, false),
						match.NewList([]rune{'d', 'e', 'f'}, false),
					}},
					match.NewText("ghi"),
				}...,
			),
		},
	} {
		m, err := Compile(test.ast, test.sep)
		if err != nil {
			t.Errorf("compilation error: %s", err)
			continue
		}

		if !reflect.DeepEqual(m, test.result) {
			t.Errorf("[%d] Compile():\nexp: %#v\nact: %#v\n\ngraphviz:\nexp:\n%s\nact:\n%s\n", id, test.result, m, debug.Graphviz("", test.result.(match.Matcher)), debug.Graphviz("", m.(match.Matcher)))
			continue
		}
	}
}