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attribute parser preserves indexes from original string

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This commit is contained in:
zadam
2020-06-06 10:39:27 +02:00
parent f245d51746
commit ef1d062745
5 changed files with 69 additions and 42 deletions
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63
src/public/app/services/attribute_parser.js
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@@ -15,7 +15,7 @@ function preprocess(str) {
function lexer(str) {
str = preprocess(str);
const expressionTokens = [];
const tokens = [];
let quotes = false;
let currentWord = '';
@@ -33,12 +33,19 @@ function lexer(str) {
}
}
function finishWord() {
/**
* @param endIndex - index of the last character of the token
*/
function finishWord(endIndex) {
if (currentWord === '') {
return;
}
expressionTokens.push(currentWord);
tokens.push({
text: currentWord,
startIndex: endIndex - currentWord.length,
endIndex: endIndex
});
currentWord = '';
}
@@ -61,7 +68,7 @@ function lexer(str) {
else if (['"', "'", '`'].includes(chr)) {
if (!quotes) {
if (previousOperatorSymbol()) {
finishWord();
finishWord(i - 1);
}
quotes = chr;
@@ -69,7 +76,7 @@ function lexer(str) {
else if (quotes === chr) {
quotes = false;
finishWord();
finishWord(i - 1);
}
else {
// it's a quote but within other kind of quotes so it's valid as a literal character
@@ -84,17 +91,11 @@ function lexer(str) {
continue;
}
else if (chr === ' ') {
finishWord();
continue;
}
else if (['(', ')', '.'].includes(chr)) {
finishWord();
currentWord += chr;
finishWord();
finishWord(i - 1);
continue;
}
else if (previousOperatorSymbol() !== isOperatorSymbol(chr)) {
finishWord();
finishWord(i - 1);
currentWord += chr;
continue;
@@ -104,44 +105,46 @@ function lexer(str) {
currentWord += chr;
}
finishWord();
finishWord(str.length - 1);
return expressionTokens;
return tokens;
}
function parser(tokens) {
const attrs = [];
for (let i = 0; i < tokens.length; i++) {
const token = tokens[i];
const {text, startIndex, endIndex} = tokens[i];
if (token.startsWith('#')) {
if (text.startsWith('#')) {
const attr = {
type: 'label',
name: token.substr(1),
isInheritable: false // FIXME
name: text.substr(1),
isInheritable: false, // FIXME
startIndex,
endIndex
};
if (tokens[i + 1] === "=") {
if (i + 1 < tokens.length && tokens[i + 1].text === "=") {
if (i + 2 >= tokens.length) {
throw new Error(`Missing value for label "${token}"`);
throw new Error(`Missing value for label "${text}"`);
}
i += 2;
attr.value = tokens[i];
attr.value = tokens[i].text;
}
attrs.push(attr);
}
else if (token.startsWith('~')) {
if (i + 2 >= tokens.length || tokens[i + 1] !== '=') {
throw new Error(`Relation "${token}" should point to a note.`);
else if (text.startsWith('~')) {
if (i + 2 >= tokens.length || tokens[i + 1].text !== '=') {
throw new Error(`Relation "${text}" should point to a note.`);
}
i += 2;
let notePath = tokens[i];
let notePath = tokens[i].text;
if (notePath.startsWith("#")) {
notePath = notePath.substr(1);
}
@@ -150,15 +153,17 @@ function parser(tokens) {
const attr = {
type: 'relation',
name: token.substr(1),
name: text.substr(1),
isInheritable: false, // FIXME
value: noteId
value: noteId,
startIndex,
endIndex
};
attrs.push(attr);
}
else {
throw new Error(`Unrecognized attribute "${token}"`);
throw new Error(`Unrecognized attribute "${text}"`);
}
}