Method lex

source/python.js:11502–11548

(token)

                return this.next();
            }
            lex(token) {
                while (this.buffer[this.position] === ' ') {
                    this.position += 1;
                }
                let i = this.position;
                if (i >= this.buffer.length) {
                    token.kind = '\0';
                    token.value = '';
                } else if (this.buffer[i] === '.' && this.buffer[i + 1] === '.' && this.buffer[i + 2] === '.') {
                    token.kind = '...';
                    token.value = '...';
                /* } else if (this.buffer[i] === '[' && this.buffer[i + 1] === ']') {
                    this.kind = '[]';
                    this.value = '[]'; */
                } else if (this.buffer[i] === '(' || this.buffer[i] === ')' || this.buffer[i] === ':' || this.buffer[i] === '.' || this.buffer[i] === '[' || this.buffer[i] === ']' || this.buffer[i] === ',' || this.buffer[i] === '=' || this.buffer[i] === '?' || this.buffer[i] === '!' || this.buffer[i] === '*' || this.buffer[i] === '|') {
                    token.kind = this.buffer[i];
                    token.value = this.buffer[i];
                } else if ((this.buffer[i] >= 'a' && this.buffer[i] <= 'z') || (this.buffer[i] >= 'A' && this.buffer[i] <= 'Z') || this.buffer[i] === '_') {
                    i += 1;
                    while (i < this.buffer.length && ((this.buffer[i] >= 'a' && this.buffer[i] <= 'z') || (this.buffer[i] >= 'A' && this.buffer[i] <= 'Z') || (this.buffer[i] >= '0' && this.buffer[i] <= '9') || this.buffer[i] === '_')) {
                        i += 1;
                    }
                    token.kind = 'id';
                    token.value = this.buffer.slice(this.position, i);
                } else if (this.buffer[i] === '-' && this.buffer[i + 1] === '>') {
                    token.kind = '->';
                    token.value = '->';
                } else if ((this.buffer[i] >= '0' && this.buffer[i] <= '9') || this.buffer[i] === '-') {
                    i += 1;
                    while (i < this.buffer.length && ((this.buffer[i] >= '0' && this.buffer[i] <= '9') || this.buffer[i] === '.' || this.buffer[i] === 'e' || this.buffer[i] === '-')) {
                        i += 1;
                    }
                    token.kind = '#';
                    token.value = this.buffer.slice(this.position, i);
                } else if (this.buffer[i] === "'" || this.buffer[i] === '"') {
                    const quote = this.buffer[i];
                    i += 1;
                    while (i < this.buffer.length && this.buffer[i] !== quote) {
                        i += (this.buffer[i] === '\\' && (this.buffer[i + 1] === "'" || this.buffer[i + 1] === '"' || this.buffer[i + 1] === '\\')) ? 2 : 1;
                    }
                    i += 1;
                    token.kind = 'string';
                    token.value = this.buffer.slice(this.position, i);
                } else {
                    throw new python.Error(`Unsupported token at '${this.position}'.`);
                }
            }
        });
        this.registerType('torch._C.SchemaTypeParser', class {
            constructor(L, complete_tensor_types, allow_typevars) {