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test_runner: refactor tap_lexer to use more primordials #45744

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merged 3 commits into from
Dec 12, 2022
Merged

test_runner: refactor tap_lexer to use more primordials #45744

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10544ef
test_runner: refactor `tap_lexer` to use more primordials
aduh95 Dec 5, 2022
9e1e56f
fixup! test_runner: refactor `tap_lexer` to use more primordials
aduh95 Dec 5, 2022
350ce5f
Update lib/internal/test_runner/tap_lexer.js
aduh95 Dec 6, 2022
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36 changes: 21 additions & 15 deletions lib/internal/test_runner/tap_lexer.js
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Original file line number Diff line number Diff line change
@@ -1,6 +1,13 @@
'use strict';

const { SafeSet, MathMax, StringPrototypeIncludes } = primordials;
const {
ArrayPrototypePop,
ArrayPrototypePush,
MathMax,
SafeSet,
StringPrototypeIncludes,
StringPrototypeTrim,
} = primordials;
const {
codes: { ERR_TAP_LEXER_ERROR },
} = require('internal/errors');
Expand Down Expand Up @@ -136,21 +143,21 @@ class TapLexer {
this.#lastScannedToken = token;
}

ArrayPrototypePush(chunk, token);
if (token.kind === TokenKind.NEWLINE) {
// Store the current chunk + NEWLINE token
tokens.push([...chunk, token]);
ArrayPrototypePush(tokens, chunk);
chunk = [];
} else {
chunk.push(token);
}
}

if (chunk.length > 0) {
tokens.push([...chunk, this.#scanEOL()]);
ArrayPrototypePush(chunk, this.#scanEOL());
ArrayPrototypePush(tokens, chunk);
}

// send EOF as a separate chunk
tokens.push([this.#scanEOF()]);
ArrayPrototypePush(tokens, [this.#scanEOF()]);

return tokens;
}
Expand Down Expand Up @@ -238,7 +245,7 @@ class TapLexer {
this.#hasTheCurrentCharacterBeenEscaped() ||
this.#source.peek(1) === TokenKind.WHITESPACE
) {
this.#escapeStack.pop();
ArrayPrototypePop(this.#escapeStack);
return new Token({
kind: TokenKind.LITERAL,
value: char,
Expand All @@ -249,7 +256,7 @@ class TapLexer {
// Otherwise, consume the escape symbol as an escape symbol that should be ignored by the parser
// we also need to push the escape symbol to the escape stack
// and consume the next character as a literal (done in the next turn)
this.#escapeStack.push(char);
ArrayPrototypePush(this.#escapeStack, char);
return new Token({
kind: TokenKind.ESCAPE,
value: char,
Expand Down Expand Up @@ -326,7 +333,7 @@ class TapLexer {
const charHasBeenEscaped = this.#hasTheCurrentCharacterBeenEscaped();
if (this.#isComment || charHasBeenEscaped) {
if (charHasBeenEscaped) {
this.#escapeStack.pop();
ArrayPrototypePop(this.#escapeStack);
}

return new Token({
Expand Down Expand Up @@ -355,7 +362,7 @@ class TapLexer {
}
}

word = word.trim();
word = StringPrototypeTrim(word);

if (TapLexer.Keywords.has(word)) {
const token = this.#scanTAPKeyword(word);
Expand All @@ -380,10 +387,9 @@ class TapLexer {
}

#scanTAPKeyword(word) {
const isLastScannedTokenEOLorNewLine = StringPrototypeIncludes(
[TokenKind.EOL, TokenKind.NEWLINE],
this.#lastScannedToken.kind
);
const isLastScannedTokenEOLorNewLine =
TokenKind.EOL === this.#lastScannedToken.kind ||
TokenKind.NEWLINE === this.#lastScannedToken.kind;

if (word === 'TAP' && isLastScannedTokenEOLorNewLine) {
return new Token({
Expand Down Expand Up @@ -479,7 +485,7 @@ class TapLexer {
// We deliberately do not include "# \ + -"" in this list
// these are used for comments/reasons explanations, pragma and escape characters
// whitespace is not included because it is handled separately
return '!"$%&\'()*,./:;<=>?@[]^_`{|}~'.indexOf(char) > -1;
return StringPrototypeIncludes('!"$%&\'()*,./:;<=>?@[]^_`{|}~', char);
}

#isWhitespaceSymbol(char) {
Expand Down