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Added New Function

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Added Senior Design Day Spring 2022 suggestion of selecting the leading whitespace characters. Had to refactor getLeadingWhitespace to include a helper function. Also added imports for vscode. Finally shifted helper functions together and added comments.
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tel0065 2022-05-01 20:22:26 -05:00 committed by GitHub
parent 2bbc5bce1f
commit c17b718ce6
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1 changed files with 145 additions and 75 deletions
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220
src/commands/text.ts
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@ -1,7 +1,7 @@
"use strict"; "use strict";
import { CommandEntry } from './commandEntry'; import pl = require("../pylex");
import vscode = require("vscode"); import { CommandEntry } from './commandEntry';
import pl = require("../pylex"); import { Position, Selection, TextEditor, TextLine, window, workspace } from "vscode";
export const textCommands: CommandEntry[] = [ export const textCommands: CommandEntry[] = [
{ {
@ -16,6 +16,10 @@ export const textCommands: CommandEntry[] = [
name: 'mind-reader.getLeadingSpaces', name: 'mind-reader.getLeadingSpaces',
callback: getLeadingSpaces, callback: getLeadingSpaces,
}, },
{
name: 'mind-reader.selectLeadingWhitespace',
callback: selectLeadingWhitespace
},
{ {
name: 'mind-reader.getNumberOfSelectedLines', name: 'mind-reader.getNumberOfSelectedLines',
callback: getNumberOfSelectedLines, callback: getNumberOfSelectedLines,
@ -30,10 +34,54 @@ export const textCommands: CommandEntry[] = [
} }
]; ];
/* Helper Function /** Helper Function
* This function returns the number of selected lines in the active text editor window *
* @param editor
* @returns numSpaces
** There are two methods that can be used to find the leading spaces:
** method 1:
** calculates the number of leading spaces by finding the length of the current line
** then subtracting from that the length of the text after trimming the whitespace at the start
** which will equal the number of whitespace characters
**
** TO-USE: set calculateLeadingSpaces to true
**
** method 2 (default):
** finds the index position of the first non-whitespace character in a 0-index
** this number will equal the number of spaces preceding the non-whitespace character
** due to the nature of 0-indexes.
**
** TO-USE: set calculateLeadingSpaces to false
*/
function fetchNumberOfLeadingSpaces(editor: TextEditor | undefined): number {
let numSpaces: number = 0;
if (editor) {
/*
* set true to use method 1: find the number of leading spaces through arithmetic
* set false to use method 2: find the index position of the first non-whitespace character in a 0-index
* default: false
*/
const calculateLeadingSpaces: boolean = false; // change boolean value to change method
const lineNum: number = (fetchLineNumber(editor) - 1); // We want the line index, so we remove the 1 we added to the result in fetchLineNumber
const line : any = editor.document.lineAt(lineNum);
/* If true, calculate by arithmetic otherwise get index */
numSpaces = (calculateLeadingSpaces)
? pl.Lexer.getLeadingSpacesByArithmetic(line)
: pl.Lexer.getLeadingSpacesByIndex(line);
}
return numSpaces;
}
/** Helper Function
* * This function returns the number of selected lines in the active text editor window
@param editor
@returns numberOfSelectedLines
*/ */
function fetchNumberOfSelectedLines(editor: vscode.TextEditor | undefined): number { function fetchNumberOfSelectedLines(editor: TextEditor | undefined): number {
let numberOfSelectedLines: number = 0; let numberOfSelectedLines: number = 0;
if (editor) { if (editor) {
@ -43,67 +91,71 @@ function fetchNumberOfSelectedLines(editor: vscode.TextEditor | undefined): numb
return numberOfSelectedLines; return numberOfSelectedLines;
} }
/* Helper Function /** Helper Function
* This function returns the line number of the active text editor window ** This function returns the line number of the active text editor window
* @param editor
* @returns editor!.selection.active.line + 1
*/ */
function fetchLineNumber(editor: any): number { function fetchLineNumber(editor: TextEditor | undefined): number {
return editor.selection.active.line + 1; return editor!.selection.active.line + 1; // line numbers start at 1, not 0, so we add 1 to the result
} }
/* Helper Function /** Helper Function
* This function returns the text from the current line of the active text editor window ** This function returns the text from the current line of the active text editor window
*/ * @param editor
function fetchTextLine(editor: any): string { * @returns editor.document.lineAt(fetchLineNumber(editor) - 1)
return editor.document.lineAt(fetchLineNumber(editor) - 1); */
function fetchLine(editor: TextEditor | undefined): TextLine {
return editor!.document.lineAt(fetchLineNumber(editor) - 1); // We want the line index, so we remove the 1 we added to the result in fetchLineNumber
} }
/** Function /* Function
* Function to return the number of selected (highlighted) lines * Function to return the number of selected (highlighted) lines
* Changes output to 'Line' for 1 line and 'Lines' for all other instances * Changes output to 'Line' for 1 line and 'Lines' for all other instances
*/ */
function getNumberOfSelectedLines(): void { function getNumberOfSelectedLines(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (editor) { if (editor) {
const numberOfSelectedLines: number = fetchNumberOfSelectedLines(editor); const numberOfSelectedLines: number = fetchNumberOfSelectedLines(editor);
(numberOfSelectedLines !== 1) (numberOfSelectedLines !== 1)
? vscode.window.showInformationMessage(`${numberOfSelectedLines.toString()} Lines Selected`) ? window.showInformationMessage(`${numberOfSelectedLines.toString()} Lines Selected`)
: vscode.window.showInformationMessage(`${numberOfSelectedLines.toString()} Line Selected`); : window.showInformationMessage(`${numberOfSelectedLines.toString()} Line Selected`);
} }
else { else {
vscode.window.showErrorMessage('No document currently active'); window.showErrorMessage('No document currently active');
} }
} }
/** Function /* Function
* Outputs the current line number the cursor is on * Outputs the current line number the cursor is on
*/ */
function getLineNumber(): void { function getLineNumber(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (editor) { if (editor) {
const lineNum: number = fetchLineNumber(editor); const lineNum: number = fetchLineNumber(editor);
vscode.window.showInformationMessage(`Line ${lineNum.toString()}`); window.showInformationMessage(`Line ${lineNum.toString()}`);
} }
else { else {
vscode.window.showErrorMessage('No document currently active'); window.showErrorMessage('No document currently active');
} }
} }
/** Function /* Function
* Used to get the number of indents on a line * Used to get the number of indents on a line
*/ */
function getIndent(): void { function getIndent(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (editor) { if (editor) {
const lineNum: number = fetchLineNumber(editor); const lineNum: number = (fetchLineNumber(editor) - 1); // We want the line index, so we remove the 1 we added to the result in fetchLineNumber
const textLine: any = editor.document.lineAt(lineNum - 1); const line : any = editor.document.lineAt(lineNum);
if (textLine.isEmptyOrWhitespace) { if (line.isEmptyOrWhitespace) {
vscode.window.showInformationMessage(`Line ${lineNum.toString()} is Empty`); window.showInformationMessage(`Line ${lineNum.toString()} is Empty`);
} }
else { else {
// Grab tab format from open document // Grab tab format from open document
@ -111,69 +163,85 @@ function getIndent(): void {
size: editor.options.tabSize, size: editor.options.tabSize,
hard: !editor.options.insertSpaces hard: !editor.options.insertSpaces
}; };
const i: number = pl.Lexer.getIndent(textLine.text, tabFmt); const i: number = pl.Lexer.getIndent(line.text, tabFmt);
(i !== 1) (i !== 1)
? vscode.window.showInformationMessage(`Line ${lineNum.toString()}: ${i.toString()} indents`) ? window.showInformationMessage(`Line ${lineNum.toString()}: ${i.toString()} indents`)
: vscode.window.showInformationMessage(`Line ${lineNum.toString()}: ${i.toString()} indent`); : window.showInformationMessage(`Line ${lineNum.toString()}: ${i.toString()} indent`);
} }
} }
else { else {
vscode.window.showErrorMessage('No document currently active'); window.showErrorMessage('No document currently active');
} }
} }
/* Function -> Returns the number of leading spaces on the line the cursor is on /* Function
* There are two methods that can be used to find the leading spaces: * Returns the number of leading spaces on the line the cursor is on
* method 1:
* calculates the number of leading spaces by finding the length of the current line
* then subtracting from that the length of the text after trimming the whitespace at the start
* which will equal the number of whitespace characters
*
* TO-USE: set calculateLeadingSpaces to true
*
* method 2 (default):
* finds the index position of the first non-whitespace character in a 0-index
* this number will equal the number of spaces preceding the non-whitespace character
* due to the nature of 0-indexes.
*
* TO-USE: set calculateLeadingSpaces to false
*/ */
function getLeadingSpaces(): void { function getLeadingSpaces(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (editor) { if (editor) {
const lineNum : number = fetchLineNumber(editor); const lineNum : number = fetchLineNumber(editor);
const textLine: any = fetchTextLine(editor); const line : any = fetchLine(editor);
if (textLine.isEmptyOrWhitespace) { if (line.isEmptyOrWhitespace) {
vscode.window.showInformationMessage(`Line ${lineNum.toString()} is empty`); window.showInformationMessage(`Line ${lineNum.toString()} is empty`);
} }
else { else {
/* const numSpaces = fetchNumberOfLeadingSpaces(editor);
* set true to use method 1: find the number of leading spaces through arithmetic
* set false to use method 2: find the index position of the first non-whitespace character in a 0-index
*
* default: false
*/
const calculateLeadingSpaces: boolean = false; // change boolean value to change method
const numSpaces: number = (calculateLeadingSpaces)
? pl.Lexer.getLeadingSpacesByArithmetic(textLine)
: pl.Lexer.getLeadingSpacesByIndex(textLine);
/* Ternary operator to change the tense of 'space' to 'spaces' for the output if numSpaces is 0 or greater than 1 */ /* Ternary operator to change the tense of 'space' to 'spaces' for the output if numSpaces is 0 or greater than 1 */
(numSpaces !== 1) (numSpaces !== 1)
? vscode.window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} spaces`) ? window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} spaces`)
: vscode.window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} space`); : window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} space`);
} }
} }
else { else {
vscode.window.showErrorMessage('No document currently active'); window.showErrorMessage('No document currently active');
}
}
/* Function
* Selects the leading whitespace at the beginning of a line
* This feature was a request from Senior Design Day Spring 2022
*/
function selectLeadingWhitespace(): void {
const editor : any = window.activeTextEditor;
if (editor) {
const numSpaces = fetchNumberOfLeadingSpaces(editor); // This will be used for the output message
const lineNum : number = (fetchLineNumber(editor) - 1); // We want the line index, so we remove the 1 we added to the result in fetchLineNumber
/* If numSpaces isn't greater than 1, then there is no leading whitespace to select */
if (numSpaces >= 1) {
const line : any = editor.document.lineAt(lineNum); // Get our line
const startPos: any = line.range.start.character; // Start at the starting character position
const endPos : any = line.firstNonWhitespaceCharacterIndex; // End at the first non whitespace character index
/* Apply our selection */
editor.selection = new Selection(new Position(lineNum, startPos), new Position(lineNum, endPos));
/* After the selection is made, the editor loses focus. We need to re-focus the editor so typing isn't interrupted */
window.showTextDocument(editor.document);
/* Ternary operator to change the tense of 'space' to 'spaces' for the output if numSpaces is 0 or greater than 1 */
(numSpaces !== 1)
? window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} spaces selected`)
: window.showInformationMessage(`Line ${lineNum.toString()}: ${numSpaces.toString()} space selected`);
}
else {
window.showErrorMessage(`Line ${lineNum.toString()}: No leading spaces to select!`); // No whitespace to select
window.showTextDocument(editor.document); // Refocus editor
}
}
else {
window.showErrorMessage('No document currently active'); // No active document
} }
} }
function runLineContext(): void { function runLineContext(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (editor) { if (editor) {
// current text and line number // current text and line number
@ -193,10 +261,10 @@ function runLineContext(): void {
// build text // build text
const contentString: string = createContextString(context, line); const contentString: string = createContextString(context, line);
vscode.window.showInformationMessage(contentString); window.showInformationMessage(contentString);
} }
else { else {
vscode.window.showErrorMessage('No document currently active'); window.showErrorMessage('No document currently active');
} }
} }
@ -232,19 +300,21 @@ function createContextString(context: any, line: string): string {
return contextString; return contextString;
} }
// find up to `n` words around the cursor, where `n` is /*
// the value of `#mindReader.reader.contextWindow` * find up to `n` words around the cursor, where `n` is
* the value of `#mindReader.reader.contextWindow`
*/
function runCursorContext(): void { function runCursorContext(): void {
const editor: any = vscode.window.activeTextEditor; const editor: any = window.activeTextEditor;
if (!editor) { if (!editor) {
vscode.window.showErrorMessage('RunCursorContext: No Active Editor'); window.showErrorMessage('RunCursorContext: No Active Editor');
return; return;
} }
const cursorPos : any = editor.selection.active; const cursorPos : any = editor.selection.active;
const text : string = editor.document.lineAt(cursorPos).text; const text : string = editor.document.lineAt(cursorPos).text;
const windowSize : any = vscode.workspace.getConfiguration('mindReader').get('reader.contextWindow'); const windowSize : any = workspace.getConfiguration('mindReader').get('reader.contextWindow');
let trimmedText: string = text.trimStart(); // trim leading whitespace let trimmedText: string = text.trimStart(); // trim leading whitespace
const leadingWS : number = text.length - trimmedText.length; // # of characters of leading whitespace const leadingWS : number = text.length - trimmedText.length; // # of characters of leading whitespace
let pos : number = leadingWS; let pos : number = leadingWS;
@ -299,7 +369,7 @@ function runCursorContext(): void {
contextString += spaceWords[i].word + ' '; contextString += spaceWords[i].word + ' ';
} }
// output cursor context string // output cursor context string
vscode.window.showInformationMessage(contextString); window.showInformationMessage(contextString);
return; return;
} }
} }