go-pkg/expr
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operator-dot.go: fixed the index range checking

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This commit is contained in:
Celestino Amoroso 2024-05-10 04:45:51 +02:00
parent d4f63a3837
commit 99e0190b9c
2 changed files with 22 additions and 18 deletions
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3
list_test.go
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@ -36,6 +36,9 @@ func TestListParser(t *testing.T) {
/* 14 */ {`[1,2,3].1`, int64(2), nil}, /* 14 */ {`[1,2,3].1`, int64(2), nil},
/* 15 */ {`ls=[1,2,3] but ls.1`, int64(2), nil}, /* 15 */ {`ls=[1,2,3] but ls.1`, int64(2), nil},
/* 16 */ {`ls=[1,2,3] but ls.(-1)`, int64(3), nil}, /* 16 */ {`ls=[1,2,3] but ls.(-1)`, int64(3), nil},
/* 17 */ {`list=["one","two","three"]; list.10`, nil, errors.New(`[1:36] index 10 out of bounds`)},
/* 18 */ {`["a", "b", "c"]`, newListA("a", "b", "c"), nil},
/* 19 */ {`["a", "b", "c"]`, newList([]any{"a", "b", "c"}), nil},
// /* 8 */ {`[int(x)|x=csv("test.csv",1,all(),1)]`, []any{int64(10), int64(40), int64(20)}, nil}, // /* 8 */ {`[int(x)|x=csv("test.csv",1,all(),1)]`, []any{int64(10), int64(40), int64(20)}, nil},
// /* 9 */ {`sum(@[int(x)|x=csv("test.csv",1,all(),1)])`, []any{int64(10), int64(40), int64(20)}, nil}, // /* 9 */ {`sum(@[int(x)|x=csv("test.csv",1,all(),1)])`, []any{int64(10), int64(40), int64(20)}, nil},

5
operator-dot.go
View File

@ -22,10 +22,11 @@ func verifyIndex(ctx ExprContext, indexTerm *term, maxValue int) (index int, err
var indexValue any var indexValue any
if indexValue, err = indexTerm.compute(ctx); err == nil { if indexValue, err = indexTerm.compute(ctx); err == nil {
if v, err = indexTerm.toInt(indexValue, "index expression value must be integer"); err == nil { if v, err = indexTerm.toInt(indexValue, "index expression value must be integer"); err == nil {
if v < 0 && v >= -maxValue {
v = maxValue + v
}
if v >= 0 && v < maxValue { if v >= 0 && v < maxValue {
index = v index = v
} else if index >= -maxValue {
index = maxValue + v
} else { } else {
err = indexTerm.Errorf("index %d out of bounds", v) err = indexTerm.Errorf("index %d out of bounds", v)
} }