From 898299384372e4fed65a85f4b540c5710dae5029 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Boris=20Markovi=C4=87?= <bmarkovic@allianz.hr>
Date: Sun, 10 Dec 2017 21:45:41 +0100
Subject: [PATCH] Workspace symbols

---
 .gitignore                           |    3 +-
 README.md                            |   14 +
 package-lock.json                    | 2585 ++++++++++++++++++++++++++
 package.json                         |   28 +-
 src/extension.ts                     |   20 +-
 src/plsqlWorkspaceSymbol.provider.ts |  133 ++
 6 files changed, 2778 insertions(+), 5 deletions(-)
 create mode 100644 package-lock.json
 create mode 100644 src/plsqlWorkspaceSymbol.provider.ts

diff --git a/.gitignore b/.gitignore
index 5a63504..cfb58a1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,5 @@
 todo.*
 out
 node_modules
-.history
\ No newline at end of file
+.history
+tags
\ No newline at end of file
diff --git a/README.md b/README.md
index cbd1b91..10f4aad 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,20 @@ Navigate to methods (procedures and functions) with some limitations :
 
 ![Image of Definition](images/Definition.gif)
 
+## Go to Symbol in workspace
+Navigate to methods (procedures and functions) available in your workspace folders with help of an external tool called [ctags](http://ctags.sourceforge.net).
+
+![Image of Symbol in workspace](images/SymbolInWorkspace.gif)
+
+You need to install the ctags tool by putting it somewhere on your local machine and tell the extension where you put it by writing the path to ctags.exe in the extenstion configuration (plsql-language.workspaceSymbols.ctags).
+
+Via extension configuration, you can disable workspace symbols (plsql-language.workspaceSymbols.enable) and configure which files should be scanned during workspace symbols searching phase (plsql-language.workspaceSymbols.extensions). By default files with these extensions will be scanned:
+* sql
+* pks
+* pkb
+
+Workspace symbols index file (used for generating symbols) will be regenerated during extension activation and after every save of a file inside visual studio code. It can also be manually invoked by clicking on the status bar info or by invoking command `Workspace Symbols: Rebuild`.
+
 ## Documentation
 Generate detailed documentation automatically for procedures and functions.
 ![Image of Documentation](images/Documentation.gif)
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..8fd4d1b
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,2585 @@
+{
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+            "dev": true
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+                "fast-deep-equal": "1.0.0",
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+                "lodash.isequal": "4.5.0",
+                "merge-stream": "1.0.1",
+                "mkdirp": "0.5.1",
+                "object-assign": "4.1.1",
+                "readable-stream": "2.3.3",
+                "strip-bom": "2.0.0",
+                "strip-bom-stream": "1.0.0",
+                "through2": "2.0.3",
+                "through2-filter": "2.0.0",
+                "vali-date": "1.0.0",
+                "vinyl": "1.2.0"
+            },
+            "dependencies": {
+                "object-assign": {
+                    "version": "4.1.1",
+                    "resolved": "https://registry.npmjs.org/object-assign/-/object-assign-4.1.1.tgz",
+                    "integrity": "sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=",
+                    "dev": true
+                },
+                "vinyl": {
+                    "version": "1.2.0",
+                    "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-1.2.0.tgz",
+                    "integrity": "sha1-XIgDbPVl5d8FVYv8kR+GVt8hiIQ=",
+                    "dev": true,
+                    "requires": {
+                        "clone": "1.0.3",
+                        "clone-stats": "0.0.1",
+                        "replace-ext": "0.0.1"
+                    }
+                }
+            }
+        },
+        "vinyl-source-stream": {
+            "version": "1.1.0",
+            "resolved": "https://registry.npmjs.org/vinyl-source-stream/-/vinyl-source-stream-1.1.0.tgz",
+            "integrity": "sha1-RMvlEIIFJ53rDFZTwJSiiHk4sas=",
+            "dev": true,
+            "requires": {
+                "through2": "0.6.5",
+                "vinyl": "0.4.6"
+            },
+            "dependencies": {
+                "clone": {
+                    "version": "0.2.0",
+                    "resolved": "https://registry.npmjs.org/clone/-/clone-0.2.0.tgz",
+                    "integrity": "sha1-xhJqkK1Pctv1rNskPMN3JP6T/B8=",
+                    "dev": true
+                },
+                "isarray": {
+                    "version": "0.0.1",
+                    "resolved": "https://registry.npmjs.org/isarray/-/isarray-0.0.1.tgz",
+                    "integrity": "sha1-ihis/Kmo9Bd+Cav8YDiTmwXR7t8=",
+                    "dev": true
+                },
+                "readable-stream": {
+                    "version": "1.0.34",
+                    "resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.0.34.tgz",
+                    "integrity": "sha1-Elgg40vIQtLyqq+v5MKRbuMsFXw=",
+                    "dev": true,
+                    "requires": {
+                        "core-util-is": "1.0.2",
+                        "inherits": "2.0.3",
+                        "isarray": "0.0.1",
+                        "string_decoder": "0.10.31"
+                    }
+                },
+                "string_decoder": {
+                    "version": "0.10.31",
+                    "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+                    "integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ=",
+                    "dev": true
+                },
+                "through2": {
+                    "version": "0.6.5",
+                    "resolved": "https://registry.npmjs.org/through2/-/through2-0.6.5.tgz",
+                    "integrity": "sha1-QaucZ7KdVyCQcUEOHXp6lozTrUg=",
+                    "dev": true,
+                    "requires": {
+                        "readable-stream": "1.0.34",
+                        "xtend": "4.0.1"
+                    }
+                },
+                "vinyl": {
+                    "version": "0.4.6",
+                    "resolved": "https://registry.npmjs.org/vinyl/-/vinyl-0.4.6.tgz",
+                    "integrity": "sha1-LzVsh6VQolVGHza76ypbqL94SEc=",
+                    "dev": true,
+                    "requires": {
+                        "clone": "0.2.0",
+                        "clone-stats": "0.0.1"
+                    }
+                }
+            }
+        },
+        "vscode": {
+            "version": "1.1.6",
+            "resolved": "https://registry.npmjs.org/vscode/-/vscode-1.1.6.tgz",
+            "integrity": "sha1-Ru0a+iwbnWifY5TI8WvR1xkPdfs=",
+            "dev": true,
+            "requires": {
+                "glob": "7.1.2",
+                "gulp-chmod": "2.0.0",
+                "gulp-filter": "5.0.1",
+                "gulp-gunzip": "1.0.0",
+                "gulp-remote-src": "0.4.3",
+                "gulp-symdest": "1.1.0",
+                "gulp-untar": "0.0.6",
+                "gulp-vinyl-zip": "2.1.0",
+                "mocha": "4.0.1",
+                "request": "2.83.0",
+                "semver": "5.4.1",
+                "source-map-support": "0.5.0",
+                "url-parse": "1.2.0",
+                "vinyl-source-stream": "1.1.0"
+            }
+        },
+        "wrappy": {
+            "version": "1.0.2",
+            "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+            "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
+        },
+        "xtend": {
+            "version": "4.0.1",
+            "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+            "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+            "dev": true
+        },
+        "yauzl": {
+            "version": "2.9.1",
+            "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.9.1.tgz",
+            "integrity": "sha1-qBmB6nCleUYTOIPwKcWCGok1mn8=",
+            "dev": true,
+            "requires": {
+                "buffer-crc32": "0.2.13",
+                "fd-slicer": "1.0.1"
+            }
+        },
+        "yazl": {
+            "version": "2.4.3",
+            "resolved": "https://registry.npmjs.org/yazl/-/yazl-2.4.3.tgz",
+            "integrity": "sha1-7CblzIfVYBud+EMtvdPNLlFzoHE=",
+            "dev": true,
+            "requires": {
+                "buffer-crc32": "0.2.13"
+            }
+        }
+    }
+}
diff --git a/package.json b/package.json
index 0c6987c..d3ad50e 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
     "name": "plsql-language",
     "displayName": "Language PL/SQL",
     "description": "PL/SQL language (Oracle) support",
-    "version": "1.1.2",
+    "version": "1.2.0",
     "publisher": "xyz",
     "engines": {
         "vscode": "^1.18.0"
@@ -92,9 +92,29 @@
                     "type": "string",
                     "default": "",
                     "description": "Define string to replace variable ${PLDOC_AUTHOR}"
+                },
+                "plsql-language.workspaceSymbols.enable": {
+                    "type": "boolean",
+                    "default": true,
+                    "description": "Enable or disable workspace symbols"
+                },
+                "plsql-language.workspaceSymbols.ctags": {
+                    "type": "string",
+                    "default": "",
+                    "description": "Path to ctags.exe used for workspace symbol generation"
+                },
+                "plsql-language.workspaceSymbols.extensions": {
+                    "type": "string",
+                    "default": ".sql.pks.pkb",
+                    "description": "File extenstions for which symbols will be generated"
                 }
             }
-        }
+        },
+        "commands": [{
+            "command": "extension.rebuildWorkspaceSymbols",
+            "title": "Rebuild",
+            "category": "Workspace Symbols"
+        }]
     },
     "scripts": {
         "vscode:prepublish": "tsc -p ./",
@@ -104,7 +124,9 @@
     "dependencies": {
         "glob": "7.1.2",
         "json5": "0.5.1",
-        "dateformat": "3.0.2"
+        "dateformat": "3.0.2",
+        "child_process": "^1.0.2",
+        "fuzzy": "^0.1.3"
     },
     "devDependencies": {
         "typescript": "2.5.3",
diff --git a/src/extension.ts b/src/extension.ts
index efb9d2d..c892568 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -3,8 +3,27 @@ import * as vscode from 'vscode';
 import { PLSQLDefinitionProvider } from './plsqlDefinition.provider';
 import { PLSQLDocumentSymbolProvider } from './plsqlDocumentSymbol.provider';
 import { PLSQLCompletionItemProvider } from './plsqlCompletionItem.provider';
+import { WorkspaceSymbols, PLSQLWorkspaceSymbolProvider } from './plsqlWorkspaceSymbol.provider'
 
 export function activate(context: vscode.ExtensionContext) {
+    if (vscode.workspace.getConfiguration('plsql-language').get<boolean>('workspaceSymbols.enable')) {
+        let workspaceSymbols = new WorkspaceSymbols()
+
+        // initial workspace symbol generation
+        workspaceSymbols.generate()
+
+        // rebuild command available at any time
+        const disposable = vscode.commands.registerCommand('extension.rebuildWorkspaceSymbols', () => {
+            workspaceSymbols.generate()
+        })
+
+        // on file save we need to rebuild workspace symbols
+        vscode.workspace.onDidSaveTextDocument(() => workspaceSymbols.generate())
+
+        context.subscriptions.push(vscode.languages.registerWorkspaceSymbolProvider(new PLSQLWorkspaceSymbolProvider()))
+        context.subscriptions.push(workspaceSymbols)
+        context.subscriptions.push(disposable)
+    }
 
     // language providers
     // context.subscriptions.push(vscode.languages.registerHoverProvider('plsql', new PLSQLHoverProvider()));
@@ -13,7 +32,6 @@ export function activate(context: vscode.ExtensionContext) {
     // context.subscriptions.push(vscode.languages.registerReferenceProvider('plsql', new PLSQLReferenceProvider()));
     // context.subscriptions.push(vscode.languages.registerDocumentFormattingEditProvider('plsql', new PLSQLDocumentFormattingEditProvider()));
     context.subscriptions.push(vscode.languages.registerDocumentSymbolProvider('plsql', new PLSQLDocumentSymbolProvider()));
-    // context.subscriptions.push(vscode.languages.registerWorkspaceSymbolProvider(new PLSQLWorkspaceSymbolProvider()));
     // context.subscriptions.push(vscode.languages.registerRenameProvider('plsql', new PLSQLRenameProvider()));
     // context.subscriptions.push(vscode.languages.registerSignatureHelpProvider('plsql', new PLSQLSignatureHelpProvider(), '(', ','));
     // context.subscriptions.push(vscode.languages.registerCodeActionsProvider('plsql', new PLSQLCodeActionProvider()));
diff --git a/src/plsqlWorkspaceSymbol.provider.ts b/src/plsqlWorkspaceSymbol.provider.ts
new file mode 100644
index 0000000..7a1e9e2
--- /dev/null
+++ b/src/plsqlWorkspaceSymbol.provider.ts
@@ -0,0 +1,133 @@
+import * as vscode from 'vscode'
+import { spawn } from 'child_process'
+import { ThemeColor } from 'vscode';
+
+const fs = require('fs')
+const readline = require('readline')
+const fuzzy = require('fuzzy')
+
+export class PLSQLWorkspaceSymbolProvider implements vscode.WorkspaceSymbolProvider {
+    provideWorkspaceSymbols(query: string, token: vscode.CancellationToken): Promise<vscode.SymbolInformation[]> {
+        return new Promise<vscode.SymbolInformation[]>((resolve, reject) => {
+            let tags: vscode.SymbolInformation[] = []
+
+            // got through workspace folders and parse tags file to get workspace symbols
+            if (Array.isArray(vscode.workspace.workspaceFolders)) {
+                vscode.workspace.workspaceFolders.forEach((workspaceFolder, index) => {
+                    const rl = readline.createInterface({
+                        input: fs.createReadStream(workspaceFolder.uri.fsPath + '\\tags')
+                    })
+
+                    // TODO: Check how to cancel request using the cancellation token
+                    // if (token.isCancellationRequested) {
+                    //     rl.close()
+                    // }
+
+                    rl.on('line', line => {
+                        // TODO: Check how to limit result length
+                        // if (tags.length > 5) {
+                        //     rl.close()
+                        // }
+
+                        // ignore ctags special lines
+                        if (!line.startsWith('!_')) {
+                            const symbol: string[] = line.split('\t')
+
+                            // only get tags that (fuzzy) match user entered query
+                            if (fuzzy.test(query, symbol[0])) {                            
+                                tags.push(new vscode.SymbolInformation(
+                                    symbol[0],
+                                    vscode.SymbolKind.Function,
+                                    '',
+                                    new vscode.Location(vscode.Uri.file(symbol[1]), new vscode.Position(Number(symbol[2].replace(';"', '')) - 1, 0))
+                                ))
+                            }
+                        }
+                    })
+
+                    rl.on('close', () => {
+                        // after parsing last tags file, resolve workspace symbols
+                        if (index === vscode.workspace.workspaceFolders.length - 1) {
+                            resolve(tags)
+                        }
+                    })
+                })
+            } else {
+                reject('Not a workspace')
+            }
+        })
+    }
+}
+
+export class WorkspaceSymbols {
+    private statusBarItem: vscode.StatusBarItem
+
+    public generate() {
+        if (Array.isArray(vscode.workspace.workspaceFolders)) {
+            // status bar info
+            if (!this.statusBarItem) {
+                this.statusBarItem = vscode.window.createStatusBarItem (vscode.StatusBarAlignment.Left, -10)
+            }
+
+            // generate tags files
+            if (vscode.workspace.getConfiguration('plsql-language').get<string>('workspaceSymbols.ctags')) {
+                if (fs.existsSync(vscode.workspace.getConfiguration('plsql-language').get<string>('workspaceSymbols.ctags') + '\\ctags.exe')) {
+                    this.statusBarItem.text = '$(search) Generating'
+                    this.statusBarItem.color = ThemeColor
+                    this.statusBarItem.tooltip = 'Generating workspace symbols...'
+                    this.statusBarItem.command = null
+
+                    // go through workspace folders and generate tags file for each folder
+                    vscode.workspace.workspaceFolders.forEach((workspaceFolder, index) => {
+                        const proc = spawn(
+                            vscode.workspace.getConfiguration('plsql-language').get<string>('workspaceSymbols.ctags') + '\\ctags',
+                            [
+                                '-n',
+                                '--recurse',
+                                '--langmap=sql:' + vscode.workspace.getConfiguration('plsql-language').get<string>('workspaceSymbols.extensions'),
+                                '--fields=k',
+                                '--sql-kinds=fp',
+                                '--tag-relative'
+                            ],
+                            {
+                                cwd: workspaceFolder.uri.fsPath
+                            })
+
+                        proc.stdout.on('data', data => {
+                            console.log(`stdout: ${data}`)
+                        })
+
+                        proc.stderr.on('data', data => {
+                            console.log(`stderr: ${data}`)
+                        })
+
+                        // after generating tags files, symbols can be rebuilt through status bar
+                        proc.on('close', code => {
+                            if (index === vscode.workspace.workspaceFolders.length - 1) {
+                                this.statusBarItem.text = '# Rebuild'
+                                this.statusBarItem.tooltip = 'Click to rebuild workspace symbols'
+                                this.statusBarItem.command = 'extension.rebuildWorkspaceSymbols'
+                            }
+                        })
+                    })
+                } else {
+                    this.statusBarItem.text = 'ctags not found'
+                    this.statusBarItem.color = ThemeColor
+                    this.statusBarItem.tooltip = `ctags tool not found in ${vscode.workspace.getConfiguration('plsql-language').get<string>('workspaceSymbols.ctags')}`
+                    this.statusBarItem.command = 'extension.rebuildWorkspaceSymbols'                    
+                }
+            } else {
+                this.statusBarItem.text = 'ctags path unknown'
+                this.statusBarItem.color = ThemeColor
+                this.statusBarItem.tooltip = 'Path to ctags tool not given'
+                this.statusBarItem.command = 'extension.rebuildWorkspaceSymbols'              
+            }
+
+            this.statusBarItem.show()            
+        }
+    }
+
+    dispose() {
+        this.statusBarItem.dispose();
+    }
+}
\ No newline at end of file