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92 lines
2.9 KiB
Go
92 lines
2.9 KiB
Go
package languages
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import (
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"regexp"
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"strings"
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"github.com/zzet/gortex/internal/graph"
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"github.com/zzet/gortex/internal/parser"
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)
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// Cairo (StarkNet) is Rust-flavoured: brace bodies, `fn` / `struct`
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// / `enum` / `trait` / `mod` keywords, and `use X::Y` imports. The
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// `#[external]` / `#[view]` annotations can precede a `fn` but do
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// not change how we capture it; the regex for `fn` tolerates
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// leading whitespace only, so attributes on a prior line are simply
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// ignored.
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var (
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cairoFnRe = regexp.MustCompile(`(?m)^\s*(?:pub\s+)?fn\s+([A-Za-z_]\w*)`)
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cairoStructRe = regexp.MustCompile(`(?m)^\s*(?:pub\s+)?struct\s+([A-Za-z_]\w*)`)
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cairoEnumRe = regexp.MustCompile(`(?m)^\s*(?:pub\s+)?enum\s+([A-Za-z_]\w*)`)
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cairoTraitRe = regexp.MustCompile(`(?m)^\s*(?:pub\s+)?trait\s+([A-Za-z_]\w*)`)
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cairoModRe = regexp.MustCompile(`(?m)^\s*(?:pub\s+)?mod\s+([A-Za-z_]\w*)`)
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cairoUseRe = regexp.MustCompile(`(?m)^\s*use\s+([\w:]+)`)
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)
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// CairoExtractor extracts StarkNet Cairo source using regex.
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type CairoExtractor struct{}
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func NewCairoExtractor() *CairoExtractor { return &CairoExtractor{} }
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func (e *CairoExtractor) Language() string { return "cairo" }
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func (e *CairoExtractor) Extensions() []string { return []string{".cairo"} }
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func (e *CairoExtractor) Extract(filePath string, src []byte) (*parser.ExtractionResult, error) {
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lines := strings.Split(string(src), "\n")
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result := &parser.ExtractionResult{}
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fileNode := &graph.Node{
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ID: filePath, Kind: graph.KindFile, Name: filePath,
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FilePath: filePath, StartLine: 1, EndLine: len(lines),
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Language: "cairo",
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}
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result.Nodes = append(result.Nodes, fileNode)
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seen := make(map[string]bool)
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add := func(name string, kind graph.NodeKind, start, end int) {
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if name == "" {
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return
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}
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id := filePath + "::" + name
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if seen[id] {
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return
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}
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seen[id] = true
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result.Nodes = append(result.Nodes, &graph.Node{
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ID: id, Kind: kind, Name: name,
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FilePath: filePath, StartLine: start, EndLine: end,
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Language: "cairo",
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})
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result.Edges = append(result.Edges, &graph.Edge{
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From: fileNode.ID, To: id, Kind: graph.EdgeDefines,
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FilePath: filePath, Line: start,
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})
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}
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captureBlock := func(re *regexp.Regexp, kind graph.NodeKind) {
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for _, m := range re.FindAllSubmatchIndex(src, -1) {
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name := string(src[m[2]:m[3]])
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line := lineAt(src, m[0])
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add(name, kind, line, findBlockEnd(lines, line))
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}
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}
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captureBlock(cairoFnRe, graph.KindFunction)
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captureBlock(cairoStructRe, graph.KindType)
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captureBlock(cairoEnumRe, graph.KindType)
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captureBlock(cairoTraitRe, graph.KindType)
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captureBlock(cairoModRe, graph.KindType)
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for _, m := range cairoUseRe.FindAllSubmatchIndex(src, -1) {
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mod := string(src[m[2]:m[3]])
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line := lineAt(src, m[0])
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result.Edges = append(result.Edges, &graph.Edge{
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From: fileNode.ID, To: "unresolved::import::" + mod,
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Kind: graph.EdgeImports, FilePath: filePath, Line: line,
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})
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}
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return result, nil
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}
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var _ parser.Extractor = (*CairoExtractor)(nil)
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