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Merge pull request #85 from grafana/generate-imports
gen: Introduce generic import mapping
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,16 +1,33 @@ | ||
| module github.com/grafana/cuetsy | ||
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| go 1.16 | ||
| go 1.19 | ||
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| require ( | ||
| cuelang.org/go v0.5.0 | ||
| github.com/google/go-cmp v0.5.8 | ||
| github.com/kr/text v0.2.0 | ||
| github.com/matryer/is v1.4.0 | ||
| github.com/rogpeppe/go-internal v1.9.0 | ||
| github.com/stretchr/testify v1.7.1 // indirect | ||
| github.com/urfave/cli/v2 v2.24.4 | ||
| github.com/urfave/cli/v2 v2.25.0 | ||
| github.com/xlab/treeprint v1.1.0 | ||
| golang.org/x/tools v0.1.12 | ||
| gotest.tools v2.2.0+incompatible | ||
| ) | ||
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| require ( | ||
| github.com/cockroachdb/apd/v2 v2.0.2 // indirect | ||
| github.com/cpuguy83/go-md2man/v2 v2.0.2 // indirect | ||
| github.com/emicklei/proto v1.10.0 // indirect | ||
| github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b // indirect | ||
| github.com/google/uuid v1.2.0 // indirect | ||
| github.com/mitchellh/go-wordwrap v1.0.1 // indirect | ||
| github.com/mpvl/unique v0.0.0-20150818121801-cbe035fff7de // indirect | ||
| github.com/pkg/errors v0.8.1 // indirect | ||
| github.com/protocolbuffers/txtpbfmt v0.0.0-20220428173112-74888fd59c2b // indirect | ||
| github.com/russross/blackfriday/v2 v2.1.0 // indirect | ||
| github.com/stretchr/testify v1.7.1 // indirect | ||
| github.com/xrash/smetrics v0.0.0-20201216005158-039620a65673 // indirect | ||
| golang.org/x/net v0.0.0-20220722155237-a158d28d115b // indirect | ||
| golang.org/x/text v0.3.8 // indirect | ||
| gopkg.in/yaml.v3 v3.0.1 // indirect | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,73 @@ | ||
| package cuetsy | ||
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| import ( | ||
| "fmt" | ||
| "strings" | ||
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| "cuelang.org/go/cue" | ||
| "cuelang.org/go/cue/ast" | ||
| tsast "github.com/grafana/cuetsy/ts/ast" | ||
| ) | ||
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| // An ImportMapper takes a string containing a CUE import path (e.g. | ||
| // "github.com/grafana/cuetsy") and returns a string indicating the import path | ||
| // that should be used in the corresponding generated typescript, or an error if | ||
| // no mapping can be made. | ||
| // | ||
| // An empty string return indicates no TS import statements | ||
| // should be generated for that CUE import path. | ||
| type ImportMapper func(string) (string, error) | ||
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| func nilImportMapper(path string) (string, error) { | ||
| return "", fmt.Errorf("a corresponding typescript import is not available for %q", path) | ||
| } | ||
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| // IgnoreImportMapper ignores all import paths cuetsy encounters, resulting in no | ||
| // import statements in generated TS output. | ||
| func IgnoreImportMapper(path string) (string, error) { | ||
| return "", nil | ||
| } | ||
|
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| // mapImports converts CUE import statements, represented in their AST form, | ||
| // to the corresponding TS import, if the CUE import is allowed. | ||
| // | ||
| // Some CUE imports are allowed but have no corresponding TS import - the CUE | ||
| // types from that package are expected to be inlined. | ||
| func mapImports(raw cue.Value, fn ImportMapper) ([]tsast.ImportSpec, error) { | ||
| bi := findInstance(raw) | ||
| if bi == nil { | ||
| return nil, nil | ||
| } | ||
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| var ims []*ast.ImportSpec | ||
| for _, src := range bi.Files { | ||
| ims = append(ims, src.Imports...) | ||
| } | ||
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| var specs []tsast.ImportSpec | ||
| for _, im := range ims { | ||
| pkg, err := fn(strings.Trim(im.Path.Value, "\"")) | ||
| if err != nil || pkg == "" { | ||
| // Empty string mapping means skip it | ||
| return nil, err | ||
| } | ||
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| tsim := tsast.ImportSpec{ | ||
| From: tsast.Str{Value: pkg}, | ||
| } | ||
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| if im.Name != nil && im.Name.String() != "" { | ||
| tsim.AsName = im.Name.String() | ||
| } else { | ||
| sl := strings.Split(strings.Trim(im.Path.Value, "\""), "/") | ||
| final := sl[len(sl)-1] | ||
| if idx := strings.Index(final, ":"); idx != -1 { | ||
| tsim.AsName = final[idx:] | ||
| } else { | ||
| tsim.AsName = final | ||
| } | ||
| } | ||
| specs = append(specs, tsim) | ||
| } | ||
| return specs, nil | ||
| } |
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