mirror of https://github.com/coder/coder.git
44 lines
1.1 KiB
Go
44 lines
1.1 KiB
Go
package parameter
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import (
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"sort"
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"github.com/hashicorp/hcl/v2"
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"github.com/hashicorp/hcl/v2/hclsyntax"
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"golang.org/x/xerrors"
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)
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// Contains parses possible values for a conditional.
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func Contains(condition string) ([]string, bool, error) {
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if condition == "" {
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return nil, false, nil
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}
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expression, diags := hclsyntax.ParseExpression([]byte(condition), "", hcl.InitialPos)
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if len(diags) > 0 {
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return nil, false, xerrors.Errorf("parse condition: %s", diags.Error())
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}
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functionCallExpression, valid := expression.(*hclsyntax.FunctionCallExpr)
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if !valid {
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return nil, false, nil
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}
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if functionCallExpression.Name != "contains" {
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return nil, false, nil
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}
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if len(functionCallExpression.Args) < 2 {
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return nil, false, nil
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}
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value, diags := functionCallExpression.Args[0].Value(&hcl.EvalContext{})
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if len(diags) > 0 {
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return nil, false, xerrors.Errorf("parse value: %s", diags.Error())
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}
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possible := make([]string, 0)
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for _, subValue := range value.AsValueSlice() {
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if subValue.Type().FriendlyName() != "string" {
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continue
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}
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possible = append(possible, subValue.AsString())
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}
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sort.Strings(possible)
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return possible, true, nil
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}
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