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Spreadsheet: Improve R function to support all of the examples

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u9g 2022-03-02 18:31:50 -05:00 • committed by Ali Mohammad Pur
parent 93115ee044
commit 12ef20b869
2 changed files with 76 additions and 17 deletions
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34
Base/res/js/Spreadsheet/runtime.js
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@ -277,10 +277,13 @@ class Range {
toString() {
const endingRow = this.endingRow ?? "";
return `R\`${this.startingColumnName}${this.startingRow}:${this.endingColumnName}${endingRow}:${this.columnStep}:${this.rowStep}\``;
const showSteps = this.rowStep !== 1 || this.columnStep !== 1;
const steps = showSteps ? `:${this.columnStep}:${this.rowStep}` : "";
return `R\`${this.startingColumnName}${this.startingRow}:${this.endingColumnName}${endingRow}${steps}\``;
}
}
const R_FORMAT = /^([a-zA-Z_]+)(?:(\d+):([a-zA-Z_]+)(\d+)?(?::(\d+):(\d+))?)?$/;
function R(fmt, ...args) {
if (args.length !== 0) throw new TypeError("R`` format must be a literal");
// done because:
@ -288,23 +291,20 @@ function R(fmt, ...args) {
// myFunc("ABC") => ""ABC""
// myFunc`ABC` => "["ABC"]"
if (Array.isArray(fmt)) fmt = fmt[0];
const parts = fmt.split(":");
if (parts.length !== 2 && parts.length !== 4)
throw new Error("Invalid Format. Expected Format: R`A0:A1` or R`A0:A2:1:2`");
// ColRow:Col(Row)?(:ColStep:RowStep)?
const start = thisSheet.parse_cell_name(parts[0]);
let end = parts[1];
if (/^[a-zA-Z_]+$/.test(end)) end = { column: end, row: undefined };
else end = thisSheet.parse_cell_name(parts[1]);
parts[2] ??= 1;
parts[3] ??= 1;
if (!R_FORMAT.test(fmt))
throw new Error("Invalid Format. Expected Format: R`A` or R`A0:A1` or R`A0:A2:1:2`");
// Format: Col(Row:Col(Row)?(:ColStep:RowStep)?)?
// Ignore the first element of the match array as that will be the whole match.
const [, ...matches] = fmt.match(R_FORMAT);
const [startCol, startRow, endCol, endRow, colStep, rowStep] = matches;
return new Range(
start.column,
end.column,
start.row,
end.row,
integer(parts[2]),
integer(parts[3])
startCol,
endCol ?? startCol,
integer(startRow ?? 0),
// Don't make undefined an integer, because then it becomes 0.
!!endRow ? integer(endRow) : endRow,
integer(colStep ?? 1),
integer(rowStep ?? 1)
);
}