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Native implementation of std.range

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This commit is contained in:
Stanisław Barzowski 2017-12-08 15:30:41 +01:00 committed by Dave Cunningham
parent 219d970ba0
commit f7eea3b545
1 changed files with 17 additions and 0 deletions
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17
builtins.go
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@ -311,6 +311,22 @@ func builtinFilter(e *evaluator, funcp potentialValue, arrp potentialValue) (val
return makeValueArray(elems), nil
}
func builtinRange(e *evaluator, fromp potentialValue, top potentialValue) (value, error) {
from, err := e.evaluateInt(fromp)
if err != nil {
return nil, err
}
to, err := e.evaluateInt(top)
if err != nil {
return nil, err
}
elems := make([]potentialValue, to-from+1)
for i := from; i <= to; i++ {
elems[i-from] = &readyValue{intToValue(i)}
}
return makeValueArray(elems), nil
}
func builtinNegation(e *evaluator, xp potentialValue) (value, error) {
x, err := e.evaluateBoolean(xp)
if err != nil {
@ -756,6 +772,7 @@ var funcBuiltins = buildBuiltinMap([]builtin{
&BinaryBuiltin{name: "makeArray", function: builtinMakeArray, parameters: ast.Identifiers{"sz", "func"}},
&BinaryBuiltin{name: "flatMap", function: builtinFlatMap, parameters: ast.Identifiers{"func", "arr"}},
&BinaryBuiltin{name: "filter", function: builtinFilter, parameters: ast.Identifiers{"func", "arr"}},
&BinaryBuiltin{name: "range", function: builtinRange, parameters: ast.Identifiers{"from", "to"}},
&BinaryBuiltin{name: "primitiveEquals", function: primitiveEquals, parameters: ast.Identifiers{"sz", "func"}},
&BinaryBuiltin{name: "objectFieldsEx", function: builtinObjectFieldsEx, parameters: ast.Identifiers{"obj", "hidden"}},
&TernaryBuiltin{name: "objectHasEx", function: builtinObjectHasEx, parameters: ast.Identifiers{"obj", "fname", "hidden"}},