Skip to content

Commit

Permalink
remove unused code
Browse files Browse the repository at this point in the history
  • Loading branch information
@qwinsi
qwinsi committed Aug 21, 2024
1 parent 25eedd1 commit 1ea0121
Showing 1 changed file with 116 additions and 174 deletions.
290 changes: 116 additions & 174 deletions src/parser.ts
View file
Original file line number Diff line number Diff line change
Expand Up @@ -566,60 +566,6 @@ export class LatexParser {
}
}

// Split tex into a list of tex strings and comments.
// Each item in the returned list is either a tex snippet or a comment.
// Each comment item is a string starting with '%'.
function splitTex(tex: string): string[] {
const lines = tex.split("\n");
const out_tex_list: string[] = [];
let current_tex = "";
// let inside_begin_depth = 0;
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
// if (line.includes('\\begin{')) {
// inside_begin_depth += line.split('\\begin{').length - 1;
// }

let index = -1;
while (index + 1 < line.length) {
index = line.indexOf('%', index + 1);
if (index === -1) {
// No comment in this line
break;
}
if (index === 0 || line[index - 1] !== '\\') {
// Found a comment
break;
}
}
if (index !== -1) {
current_tex += line.substring(0, index);
const comment = line.substring(index);
out_tex_list.push(current_tex);
current_tex = "";
out_tex_list.push(comment);
} else {
current_tex += line;
}
if (i < lines.length - 1) {
const has_begin_command = line.includes('\\begin{');
const followed_by_end_command = lines[i + 1].includes('\\end{');
if(!has_begin_command && !followed_by_end_command) {
current_tex += '\n';
}
}

// if (line.includes('\\end{')) {
// inside_begin_depth -= line.split('\\end{').length - 1;
// }
}

if (current_tex.length > 0) {
out_tex_list.push(current_tex);
}

return out_tex_list;
}

export class LatexNodeToTexNodeError extends Error {
node: LatexParseNode;
Expand All @@ -632,133 +578,129 @@ export class LatexNodeToTexNodeError extends Error {
}

function latexNodeToTexNode(node: LatexParseNode): TexNode {
try {
let res = {} as TexNode;
switch (node.type) {
case 'ordgroup':
res.type = 'ordgroup';
res.args = (node.args as LatexParseNode[]).map((n: LatexParseNode) => latexNodeToTexNode(n));
if (res.args!.length === 1) {
res = res.args![0] as TexNode;
}
break;
case 'empty':
res.type = 'empty';
res.content = '';
break;
case 'atom':
res.type = 'atom';
res.content = node.content!;
break;
case 'token':
case 'token-letter-var':
case 'token-number':
case 'token-operator':
case 'token-parenthesis':
let res = {} as TexNode;
switch (node.type) {
case 'ordgroup':
res.type = 'ordgroup';
res.args = (node.args as LatexParseNode[]).map((n: LatexParseNode) => latexNodeToTexNode(n));
if (res.args!.length === 1) {
res = res.args![0] as TexNode;
}
break;
case 'empty':
res.type = 'empty';
res.content = '';
break;
case 'atom':
res.type = 'atom';
res.content = node.content!;
break;
case 'token':
case 'token-letter-var':
case 'token-number':
case 'token-operator':
case 'token-parenthesis':
res.type = 'symbol';
res.content = node.content!;
break;
case 'supsub':
res.type = 'supsub';
res.irregularData = {} as TexSupsubData;
if (node['base']) {
res.irregularData.base = latexNodeToTexNode(node['base']);
}
if (node['sup']) {
res.irregularData.sup = latexNodeToTexNode(node['sup']);
}
if (node['sub']) {
res.irregularData.sub = latexNodeToTexNode(node['sub']);
}
break;
case 'leftright':
res.type = 'leftright';

const body = latexNodeToTexNode(node.body as LatexParseNode);

let left: string = node['left']!;
if (left === "\\{") {
left = "{";
}
let right: string = node['right']!;
if (right === "\\}") {
right = "}";
}
const is_atom = (str:string) => (['(', ')', '[', ']', '{', '}'].includes(str));
res.args = [
{ type: is_atom(left)? 'atom': 'symbol', content: left },
body,
{ type: is_atom(right)? 'atom': 'symbol', content: right}
];
break;
case 'beginend':
if (node.content?.startsWith('align')) {
// align, align*, alignat, alignat*, aligned, etc.
res.type = 'align';
} else {
res.type = 'matrix';
}
res.content = node.content!;
res.irregularData = (node.body as LatexParseNode[][]).map((row: LatexParseNode[]) => {
return row.map((n: LatexParseNode) => latexNodeToTexNode(n));
});
break;
case 'command':
const num_args = get_command_param_num(node.content!);
res.content = '\\' + node.content!;
if (num_args === 0) {
res.type = 'symbol';
res.content = node.content!;
break;
case 'supsub':
res.type = 'supsub';
res.irregularData = {} as TexSupsubData;
if (node['base']) {
res.irregularData.base = latexNodeToTexNode(node['base']);
}
if (node['sup']) {
res.irregularData.sup = latexNodeToTexNode(node['sup']);
}
if (node['sub']) {
res.irregularData.sub = latexNodeToTexNode(node['sub']);
}
break;
case 'leftright':
res.type = 'leftright';

const body = latexNodeToTexNode(node.body as LatexParseNode);

let left: string = node['left']!;
if (left === "\\{") {
left = "{";
}
let right: string = node['right']!;
if (right === "\\}") {
right = "}";
}
const is_atom = (str:string) => (['(', ')', '[', ']', '{', '}'].includes(str));
} else if (num_args === 1) {
res.type = 'unaryFunc';
res.args = [
{ type: is_atom(left)? 'atom': 'symbol', content: left },
body,
{ type: is_atom(right)? 'atom': 'symbol', content: right}
];
break;
case 'beginend':
if (node.content?.startsWith('align')) {
// align, align*, alignat, alignat*, aligned, etc.
res.type = 'align';
} else {
res.type = 'matrix';
}
res.content = node.content!;
res.irregularData = (node.body as LatexParseNode[][]).map((row: LatexParseNode[]) => {
return row.map((n: LatexParseNode) => latexNodeToTexNode(n));
});
break;
case 'command':
const num_args = get_command_param_num(node.content!);
res.content = '\\' + node.content!;
if (num_args === 0) {
res.type = 'symbol';
} else if (num_args === 1) {
res.type = 'unaryFunc';
res.args = [
latexNodeToTexNode(node.arg1 as LatexParseNode)
]
if (node.content === 'sqrt') {
if (node.exponent) {
res.irregularData = latexNodeToTexNode(node.exponent) as TexNode;
}
latexNodeToTexNode(node.arg1 as LatexParseNode)
]
if (node.content === 'sqrt') {
if (node.exponent) {
res.irregularData = latexNodeToTexNode(node.exponent) as TexNode;
}
} else if (num_args === 2) {
res.type = 'binaryFunc';
res.args = [
latexNodeToTexNode(node.arg1 as LatexParseNode),
latexNodeToTexNode(node.arg2 as LatexParseNode)
]
} else {
throw new LatexNodeToTexNodeError('Invalid number of arguments', node);
}
break;
case 'text':
res.type = 'text';
res.content = node.content!;
break;
case 'comment':
res.type = 'comment';
} else if (num_args === 2) {
res.type = 'binaryFunc';
res.args = [
latexNodeToTexNode(node.arg1 as LatexParseNode),
latexNodeToTexNode(node.arg2 as LatexParseNode)
]
} else {
throw new LatexNodeToTexNodeError('Invalid number of arguments', node);
}
break;
case 'text':
res.type = 'text';
res.content = node.content!;
break;
case 'comment':
res.type = 'comment';
res.content = node.content!;
break;
case 'whitespace':
res.type = 'empty';
break;
case 'newline':
res.type = 'newline';
res.content = '\n';
break;
case 'control':
if (node.content === '\\\\') {
res.type = 'symbol';
res.content = node.content!;
break;
case 'whitespace':
res.type = 'empty';
break;
case 'newline':
res.type = 'newline';
res.content = '\n';
break;
case 'control':
if (node.content === '\\\\') {
res.type = 'symbol';
res.content = node.content!;
break;
} else {
throw new LatexNodeToTexNodeError(`Unknown control sequence: ${node.content}`, node);
}
break;
default:
throw new LatexNodeToTexNodeError(`Unknown node type: ${node.type}`, node);
}
return res as TexNode;
} catch (e) {
throw e;
} else {
throw new LatexNodeToTexNodeError(`Unknown control sequence: ${node.content}`, node);
}
break;
default:
throw new LatexNodeToTexNodeError(`Unknown node type: ${node.type}`, node);
}
return res as TexNode;
}

export function parseTex(tex: string, customTexMacros: {[key: string]: string}): TexNode {
Expand Down

0 comments on commit 1ea0121

Please sign in to comment.