clerk/internal/lsp/textdocument_hover.go (view raw)
Oleksandr Smirnov
Oleksandr Smirnov
olexsmir@gmail.com ast: inline leaf value+span wrapper structs, 1 month ago
olexsmir@gmail.com ast: inline leaf value+span wrapper structs, 1 month ago
| 1 | package lsp |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "fmt" |
| 6 | "strings" |
| 7 | |
| 8 | "go.lsp.dev/protocol" |
| 9 | |
| 10 | "olexsmir.xyz/clerk/internal/analyzer" |
| 11 | "olexsmir.xyz/clerk/journal/ast" |
| 12 | "olexsmir.xyz/clerk/journal/token" |
| 13 | ) |
| 14 | |
| 15 | func (s *server) Hover(_ context.Context, params *protocol.HoverParams) (*protocol.Hover, error) { |
| 16 | state, ok := s.getDocState(params.TextDocument.URI) |
| 17 | if !ok { |
| 18 | return nil, nil |
| 19 | } |
| 20 | |
| 21 | an := s.analysisFor(params.TextDocument.URI) |
| 22 | cursor := state.lineIdx.Offset(int(params.Position.Line), int(params.Position.Character)) |
| 23 | el := hoverAt(an, params.TextDocument.URI.Path(), state.text, cursor) |
| 24 | if el == nil { |
| 25 | return nil, nil |
| 26 | } |
| 27 | |
| 28 | return &protocol.Hover{ |
| 29 | Contents: &protocol.MarkupContent{ |
| 30 | Kind: protocol.MarkupKindMarkdown, |
| 31 | Value: buildHoverContent(an, state.text, el), |
| 32 | }, |
| 33 | Range: new(state.lineIdx.SpanRange(el.span)), |
| 34 | }, nil |
| 35 | } |
| 36 | |
| 37 | type hoverKind int |
| 38 | |
| 39 | const ( |
| 40 | hoverAccount hoverKind = iota |
| 41 | hoverCommodity |
| 42 | hoverPayee |
| 43 | hoverTagKey |
| 44 | hoverTagValue |
| 45 | hoverAmount |
| 46 | hoverDate |
| 47 | ) |
| 48 | |
| 49 | type hoverElement struct { |
| 50 | kind hoverKind |
| 51 | span token.Span |
| 52 | name string // account, commodity or payee name |
| 53 | tagKey string |
| 54 | tagValue string |
| 55 | amount *ast.Amount |
| 56 | cost *ast.Cost |
| 57 | tx *ast.Transaction // date hover |
| 58 | } |
| 59 | |
| 60 | // hoverAt finds the hover target under the cursor in the document matching |
| 61 | // docPath. Only the entry containing the cursor can match; entries are in |
| 62 | // file order, so [entryAt] finds the containing entry in O(log n). |
| 63 | func hoverAt(an *analyzer.Analysis, docPath, content string, cursor int) *hoverElement { |
| 64 | pf := parsedFileFor(an, docPath) |
| 65 | if pf == nil { |
| 66 | return nil |
| 67 | } |
| 68 | if entry := entryAt(pf.Ast.Entries, cursor); entry != nil { |
| 69 | return hoverInEntry(content, entry, cursor) |
| 70 | } |
| 71 | return nil |
| 72 | } |
| 73 | |
| 74 | func hoverInEntry(content string, e ast.Entry, cursor int) *hoverElement { |
| 75 | switch e := e.(type) { |
| 76 | case *ast.Transaction: |
| 77 | if e.Payee != "" && spanContains(content, e.PayeeSpan, cursor) { |
| 78 | return &hoverElement{kind: hoverPayee, span: e.PayeeSpan, name: e.Payee} |
| 79 | } |
| 80 | if spanContains(content, e.Date.Span, cursor) { |
| 81 | return &hoverElement{kind: hoverDate, span: e.Date.Span, tx: e} |
| 82 | } |
| 83 | if el := hoverTagInComment(content, e.Comment, cursor); el != nil { |
| 84 | return el |
| 85 | } |
| 86 | for _, c := range e.HeaderComments { |
| 87 | if el := hoverTagInComment(content, c, cursor); el != nil { |
| 88 | return el |
| 89 | } |
| 90 | } |
| 91 | return hoverInPostings(content, e.Postings, cursor) |
| 92 | case *ast.PeriodicTransaction: |
| 93 | if el := hoverTagInComment(content, e.Comment, cursor); el != nil { |
| 94 | return el |
| 95 | } |
| 96 | for _, c := range e.HeaderComments { |
| 97 | if el := hoverTagInComment(content, c, cursor); el != nil { |
| 98 | return el |
| 99 | } |
| 100 | } |
| 101 | return hoverInPostings(content, e.Postings, cursor) |
| 102 | case *ast.AutomatedTransaction: |
| 103 | if el := hoverTagInComment(content, e.Comment, cursor); el != nil { |
| 104 | return el |
| 105 | } |
| 106 | for _, c := range e.HeaderComments { |
| 107 | if el := hoverTagInComment(content, c, cursor); el != nil { |
| 108 | return el |
| 109 | } |
| 110 | } |
| 111 | return hoverInPostings(content, e.Postings, cursor) |
| 112 | case *ast.Comment: |
| 113 | return hoverTagInComment(content, e, cursor) |
| 114 | case *ast.AccountDirective: |
| 115 | if spanContains(content, e.Account.Span, cursor) { |
| 116 | return &hoverElement{kind: hoverAccount, span: e.Account.Span, name: e.Account.String()} |
| 117 | } |
| 118 | for _, sd := range e.Subdirectives { |
| 119 | if sd.Kind == ast.SubdirectiveAlias && spanContains(content, sd.ValueSpan, cursor) { |
| 120 | return &hoverElement{kind: hoverAccount, span: sd.ValueSpan, name: sd.Value} |
| 121 | } |
| 122 | } |
| 123 | case *ast.AliasDirective: |
| 124 | if spanContains(content, e.From.Span, cursor) { |
| 125 | return &hoverElement{kind: hoverAccount, span: e.From.Span, name: e.From.String()} |
| 126 | } |
| 127 | if spanContains(content, e.To.Span, cursor) { |
| 128 | return &hoverElement{kind: hoverAccount, span: e.To.Span, name: e.To.String()} |
| 129 | } |
| 130 | case *ast.CommodityDirective: |
| 131 | if spanContains(content, e.CommoditySpan, cursor) { |
| 132 | return &hoverElement{kind: hoverCommodity, span: e.CommoditySpan, name: e.Commodity} |
| 133 | } |
| 134 | case *ast.PayeeDirective: |
| 135 | if e.Name != "" && spanContains(content, e.NameSpan, cursor) { |
| 136 | return &hoverElement{kind: hoverPayee, span: e.NameSpan, name: e.Name} |
| 137 | } |
| 138 | case *ast.TagDirective: |
| 139 | if e.Name != "" { |
| 140 | if span, ok := tagDirectiveSpan(content, e); ok && spanContains(content, span, cursor) { |
| 141 | return &hoverElement{kind: hoverTagKey, span: span, tagKey: e.Name} |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | return nil |
| 146 | } |
| 147 | |
| 148 | func hoverInPostings(content string, postings []ast.Posting, cursor int) *hoverElement { |
| 149 | for _, p := range postings { |
| 150 | if spanContains(content, p.Account.Span, cursor) { |
| 151 | return &hoverElement{kind: hoverAccount, span: p.Account.Span, name: p.Account.String()} |
| 152 | } |
| 153 | if p.Amount != nil { |
| 154 | if spanContains(content, p.Amount.Span, cursor) { |
| 155 | return &hoverElement{kind: hoverAmount, span: p.Amount.Span, amount: p.Amount, cost: p.Cost} |
| 156 | } |
| 157 | if ref := commodityRef(content, p.Amount, cursor); ref != nil { |
| 158 | return &hoverElement{kind: hoverCommodity, span: ref.span, name: ref.name} |
| 159 | } |
| 160 | } |
| 161 | if p.Cost != nil { |
| 162 | if ref := commodityRef(content, &p.Cost.Amount, cursor); ref != nil { |
| 163 | return &hoverElement{kind: hoverCommodity, span: ref.span, name: ref.name} |
| 164 | } |
| 165 | } |
| 166 | if p.Balance != nil { |
| 167 | if ref := commodityRef(content, &p.Balance.Amount, cursor); ref != nil { |
| 168 | return &hoverElement{kind: hoverCommodity, span: ref.span, name: ref.name} |
| 169 | } |
| 170 | if p.Balance.Cost != nil { |
| 171 | if ref := commodityRef(content, &p.Balance.Cost.Amount, cursor); ref != nil { |
| 172 | return &hoverElement{kind: hoverCommodity, span: ref.span, name: ref.name} |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | if el := hoverTagInComment(content, p.Comment, cursor); el != nil { |
| 177 | return el |
| 178 | } |
| 179 | for i := range p.Comments { |
| 180 | if el := hoverTagInComment(content, &p.Comments[i], cursor); el != nil { |
| 181 | return el |
| 182 | } |
| 183 | } |
| 184 | } |
| 185 | return nil |
| 186 | } |
| 187 | |
| 188 | func hoverTagInComment(content string, c *ast.Comment, cursor int) *hoverElement { |
| 189 | if c == nil { |
| 190 | return nil |
| 191 | } |
| 192 | for i := range c.Tags { |
| 193 | t := &c.Tags[i] |
| 194 | if !spanContains(content, t.Span, cursor) { |
| 195 | continue |
| 196 | } |
| 197 | keySpan := tagKeySpan(content, t) |
| 198 | if spanContains(content, keySpan, cursor) { |
| 199 | return &hoverElement{kind: hoverTagKey, span: keySpan, tagKey: t.Key} |
| 200 | } |
| 201 | return &hoverElement{kind: hoverTagValue, span: tagValueSpan(content, t), tagKey: t.Key, tagValue: t.Value} |
| 202 | } |
| 203 | return nil |
| 204 | } |
| 205 | |
| 206 | func buildHoverContent(an *analyzer.Analysis, content string, el *hoverElement) string { |
| 207 | switch el.kind { |
| 208 | case hoverAccount: |
| 209 | return buildAccountHover(an, el.name) |
| 210 | case hoverCommodity: |
| 211 | return buildCommodityHover(an, el.name) |
| 212 | case hoverPayee: |
| 213 | return buildPayeeHover(an, el.name) |
| 214 | case hoverTagKey: |
| 215 | return buildTagHover(an, el.tagKey) |
| 216 | case hoverTagValue: |
| 217 | return buildTagValueHover(an, el.tagKey, el.tagValue) |
| 218 | case hoverAmount: |
| 219 | return buildAmountHover(content, el.amount, el.cost) |
| 220 | case hoverDate: |
| 221 | return buildDateHover(an, el.tx) |
| 222 | default: |
| 223 | return "" |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | func buildAccountHover(an *analyzer.Analysis, name string) string { |
| 228 | if canon, ok := an.AccountAliases[name]; ok { |
| 229 | name = canon |
| 230 | } |
| 231 | var sb strings.Builder |
| 232 | fmt.Fprintf(&sb, "**Account:** `%s`", name) |
| 233 | if info := an.Accounts[name]; info != nil { |
| 234 | fmt.Fprintf(&sb, "\n**Postings:** %d", info.UsedCount) |
| 235 | writeDateSection(&sb, "**Last used:**", info.LastUsed) |
| 236 | } |
| 237 | return sb.String() |
| 238 | } |
| 239 | |
| 240 | func buildCommodityHover(an *analyzer.Analysis, symbol string) string { |
| 241 | var sb strings.Builder |
| 242 | fmt.Fprintf(&sb, "**Commodity:** `%s`", symbol) |
| 243 | if info := an.Commodities[symbol]; info != nil { |
| 244 | fmt.Fprintf(&sb, "\n**Usage:** %d", info.UsedCount) |
| 245 | writeDateSection(&sb, "**Last used:**", info.LastUsed) |
| 246 | } |
| 247 | return sb.String() |
| 248 | } |
| 249 | |
| 250 | func buildPayeeHover(an *analyzer.Analysis, name string) string { |
| 251 | var sb strings.Builder |
| 252 | fmt.Fprintf(&sb, "**Payee:** %s", name) |
| 253 | if info := an.Payees[name]; info != nil { |
| 254 | fmt.Fprintf(&sb, "\n**Transactions:** %d", info.UsedCount) |
| 255 | } |
| 256 | return sb.String() |
| 257 | } |
| 258 | |
| 259 | func buildTagHover(an *analyzer.Analysis, key string) string { |
| 260 | var sb strings.Builder |
| 261 | fmt.Fprintf(&sb, "**Tag:** `%s`", key) |
| 262 | if info := an.Tags[key]; info != nil { |
| 263 | fmt.Fprintf(&sb, "\n**Usage:** %d", info.UsedCount) |
| 264 | if len(info.Values) > 0 { |
| 265 | sb.WriteString("\n**Values:**\n") |
| 266 | for i, v := range info.Values { |
| 267 | if i > 0 { |
| 268 | sb.WriteByte('\n') |
| 269 | } |
| 270 | if v == "" { |
| 271 | sb.WriteString("- *(empty)*") |
| 272 | } else { |
| 273 | fmt.Fprintf(&sb, "- `%s`", v) |
| 274 | } |
| 275 | } |
| 276 | } |
| 277 | } |
| 278 | return sb.String() |
| 279 | } |
| 280 | |
| 281 | func buildTagValueHover(an *analyzer.Analysis, key, value string) string { |
| 282 | var sb strings.Builder |
| 283 | fmt.Fprintf(&sb, "**Tag:** `%s`", key) |
| 284 | if value == "" { |
| 285 | sb.WriteString("\n**Value:** *(empty)*") |
| 286 | } else { |
| 287 | fmt.Fprintf(&sb, "\n**Value:** `%s`", value) |
| 288 | } |
| 289 | if info := an.Tags[key]; info != nil { |
| 290 | count := 0 |
| 291 | for _, u := range info.Usage { |
| 292 | if u.Tag.Value == value { |
| 293 | count++ |
| 294 | } |
| 295 | } |
| 296 | fmt.Fprintf(&sb, "\n**Usage:** %d", count) |
| 297 | } |
| 298 | return sb.String() |
| 299 | } |
| 300 | |
| 301 | func buildAmountHover(content string, am *ast.Amount, cost *ast.Cost) string { |
| 302 | amountText := strings.TrimRight(content[am.Span.Start.Offset:am.Span.End.Offset], " \t") |
| 303 | var sb strings.Builder |
| 304 | fmt.Fprintf(&sb, "**Amount:** %s", amountText) |
| 305 | if cost != nil { |
| 306 | costText := strings.TrimRight(content[cost.Amount.Span.Start.Offset:cost.Amount.Span.End.Offset], " \t") |
| 307 | label, marker := "**Unit cost:**", "@" |
| 308 | if cost.IsTotal { |
| 309 | label, marker = "**Total cost:**", "@@" |
| 310 | } |
| 311 | fmt.Fprintf(&sb, "\n\n%s %s %s", label, marker, costText) |
| 312 | } |
| 313 | return sb.String() |
| 314 | } |
| 315 | |
| 316 | func buildDateHover(an *analyzer.Analysis, tx *ast.Transaction) string { |
| 317 | var sb strings.Builder |
| 318 | fmt.Fprintf(&sb, "**Date:** %04d-%02d-%02d", tx.Date.Year, tx.Date.Month, tx.Date.Day) |
| 319 | if tx.Payee != "" { |
| 320 | fmt.Fprintf(&sb, "\n\n**Payee:** %s", tx.Payee) |
| 321 | } |
| 322 | fmt.Fprintf(&sb, "\n\n**Transactions:** %d", an.CountTransactionsOnDate(tx.Date)) |
| 323 | fmt.Fprintf(&sb, "\n\n**Postings:** %d", len(tx.Postings)) |
| 324 | return sb.String() |
| 325 | } |
| 326 | |
| 327 | func writeDateSection(sb *strings.Builder, label string, d ast.Date) { |
| 328 | if d.Year == 0 { |
| 329 | return |
| 330 | } |
| 331 | fmt.Fprintf(sb, "\n%s %04d-%02d-%02d", label, d.Year, d.Month, d.Day) |
| 332 | } |
| 333 | |
| 334 | func tagValueSpan(content string, t *ast.Tag) token.Span { |
| 335 | start := tagKeySpan(content, t).End.Offset |
| 336 | if start < t.Span.End.Offset && content[start] == ':' { |
| 337 | start++ |
| 338 | } |
| 339 | end := t.Span.End.Offset |
| 340 | for end > start && (content[end-1] == ' ' || content[end-1] == '\t') { |
| 341 | end-- |
| 342 | } |
| 343 | return token.Span{File: t.Span.File, Start: token.Pos{Offset: start}, End: token.Pos{Offset: end}} |
| 344 | } |