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map, filter and cat return an iterator

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This commit is contained in:
Celestino Amoroso
2026-05-09 17:42:04 +02:00
parent e5a61b5638
commit 45faea7620
6 changed files with 182 additions and 90 deletions
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t_iterator_test.go
+46 -12
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@@ -35,26 +35,60 @@ func TestIteratorParser(t *testing.T) {
/* 20 */ {`it=$({1:"one",2:"two",3:"three"}, "default", "value"); it++`, "one", nil},
/* 21 */ {`it=$({1:"one",2:"two",3:"three"}, "desc", "key"); it++`, int64(3), nil},
/* 22 */ {`it=$({1:"one",2:"two",3:"three"}, "asc", "item"); it++`, kern.NewList([]any{int64(1), "one"}), nil},
/* 23 */ {`builtin "os.file"; fileLineIterator("test-file.txt") map ${__}`, kern.NewList([]any{int64(0), int64(1)}), nil},
/* 24 */ {`builtin "os.file"; #(fileLineIterator("test-file.txt") filter (#${_} == 2))`, int64(0), nil},
/* 25 */ {`builtin "os.file"; #(fileLineIterator("test-file.txt") filter (#${_} == 3))`, int64(2), nil},
/* 26 */ {`#($(10) map ${_})`, int64(10), nil},
/* 27 */ {`#($(10,0) map ${_})`, int64(10), nil},
/* 28 */ {`$(10) digest ${_}`, int64(9), nil},
/* 29 */ {`$(10,0) digest ${_}`, int64(1), nil},
/* 30 */ {`$(10,0,-2) digest ${_}`, int64(2), nil},
/* 31 */ {`[3,4,5] map ${_#}`, kern.NewList([]any{int64(1), int64(2), int64(3)}), nil},
}
// runTestSuiteSpec(t, section, inputs, 10)
runTestSuite(t, section, inputs)
}
func TestCatIterator(t *testing.T) {
section := "Iterator"
func TestFilterIterator(t *testing.T) {
section := "Iterator-Filter"
inputs := []inputType{
/* 1 */ {`([1] cat [2]) map $_`, kern.NewList([]any{int64(1), int64(2)}), nil},
/* 1 */ {`$$([1,2,3] filter $_%2==0)`, kern.NewList([]any{int64(2)}), nil},
/* 2 */ {`it = [1,2,3] filter $_%2!=1; $$(it)`, kern.NewList([]any{int64(2)}), nil},
/* 3 */ {`builtin "os.file"; #$$(fileLineIterator("test-file.txt") filter (#${_} == 2))`, int64(0), nil},
/* 4 */ {`builtin "os.file"; #$$(fileLineIterator("test-file.txt") filter (#${_} == 3))`, int64(2), nil},
}
// runTestSuiteSpec(t, section, inputs, 2)
runTestSuite(t, section, inputs)
}
func TestDigestIterator(t *testing.T) {
section := "Iterator-Digest"
inputs := []inputType{
/* 1 */ {`$(10) digest ${_}`, int64(9), nil},
/* 2 */ {`$(10,0) digest ${_}`, int64(1), nil},
/* 3 */ {`$(10,0,-2) digest ${_}`, int64(2), nil},
}
// runTestSuiteSpec(t, section, inputs, 2)
runTestSuite(t, section, inputs)
}
func TestCatIterator(t *testing.T) {
section := "Iterator-Cat"
inputs := []inputType{
/* 1 */ {`$$([1] cat [])`, kern.NewList([]any{int64(1)}), nil},
/* 2 */ {`$$([1] cat [2])`, kern.NewList([]any{int64(1), int64(2)}), nil},
/* 3 */ {`$$([1] cat nil)`, kern.NewList([]any{int64(1)}), nil},
/* 4 */ {`$$(nil cat [2])`, kern.NewList([]any{int64(2)}), nil},
/* 5 */ {`$$(nil cat nil)`, kern.NewList([]any{}), nil},
/* 6 */ {`$$(["a","b"] cat ["x"-true])`, nil, `[1:23] left operand 'x' [string] and right operand 'true' [bool] are not compatible with operator "-"`},
}
// runTestSuiteSpec(t, section, inputs, 6)
runTestSuite(t, section, inputs)
}
func TestMapIterator(t *testing.T) {
section := "Iterator-Map"
inputs := []inputType{
/* 1 */ {`$$([3,4,5] map ${_#})`, kern.NewList([]any{int64(1), int64(2), int64(3)}), nil},
/* 2 */ {`#$$($(10) map ${_})`, int64(10), nil},
/* 3 */ {`#$$($(10,0) map ${_})`, int64(10), nil},
/* 4 */ {`builtin "os.file"; $$(fileLineIterator("test-file.txt") map ${__})`, kern.NewList([]any{int64(0), int64(1)}), nil},
/* 5 */ {`$$(["1", "2", "3"] map int())`, nil, `int(): too few params -- expected 1, got 0`},
}
// runTestSuiteSpec(t, section, inputs, 2)