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@ -1,6 +1,6 @@
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/*
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Source:
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github:tree-sitter/tree-sitter-typescript#0ab9d99867435a7667c5548a6617a6bf73dbd830
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0.20.5
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The MIT License (MIT)
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@ -25,18 +25,23 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#include <tree_sitter/parser.h>
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#include "tree_sitter/parser.h"
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#include <wctype.h>
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enum TokenType {
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AUTOMATIC_SEMICOLON,
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TEMPLATE_CHARS,
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TERNARY_QMARK,
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BINARY_OPERATORS,
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HTML_COMMENT,
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LOGICAL_OR,
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ESCAPE_SEQUENCE,
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FUNCTION_SIGNATURE_AUTOMATIC_SEMICOLON,
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ERROR_RECOVERY,
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};
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static void advance(TSLexer *lexer) { lexer->advance(lexer, false); }
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static void skip(TSLexer *lexer) { lexer->advance(lexer, true); }
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static bool scan_template_chars(TSLexer *lexer) {
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@ -50,7 +55,9 @@ static bool scan_template_chars(TSLexer *lexer) {
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return false;
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case '$':
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advance(lexer);
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if (lexer->lookahead == '{') return has_content;
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if (lexer->lookahead == '{') {
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return has_content;
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}
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break;
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case '\\':
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return has_content;
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@ -60,7 +67,7 @@ static bool scan_template_chars(TSLexer *lexer) {
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}
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}
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static bool scan_whitespace_and_comments(TSLexer *lexer) {
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static bool scan_whitespace_and_comments(TSLexer *lexer, bool *scanned_comment) {
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for (;;) {
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while (iswspace(lexer->lookahead)) {
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skip(lexer);
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@ -74,6 +81,7 @@ static bool scan_whitespace_and_comments(TSLexer *lexer) {
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while (lexer->lookahead != 0 && lexer->lookahead != '\n') {
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skip(lexer);
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}
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*scanned_comment = true;
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} else if (lexer->lookahead == '*') {
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skip(lexer);
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while (lexer->lookahead != 0) {
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@ -96,12 +104,14 @@ static bool scan_whitespace_and_comments(TSLexer *lexer) {
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}
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}
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static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols, bool *scanned_comment) {
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lexer->result_symbol = AUTOMATIC_SEMICOLON;
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lexer->mark_end(lexer);
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for (;;) {
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if (lexer->lookahead == 0) return true;
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if (lexer->lookahead == 0) {
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return true;
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}
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if (lexer->lookahead == '}') {
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// Automatic semicolon insertion breaks detection of object patterns
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// in a typed context:
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@ -110,17 +120,25 @@ static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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do {
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skip(lexer);
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} while (iswspace(lexer->lookahead));
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if (lexer->lookahead == ':') return false;
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if (lexer->lookahead == ':') {
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return false;
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}
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return true;
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}
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if (!iswspace(lexer->lookahead)) return false;
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if (lexer->lookahead == '\n') break;
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if (!iswspace(lexer->lookahead)) {
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return false;
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}
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if (lexer->lookahead == '\n') {
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break;
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}
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skip(lexer);
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}
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skip(lexer);
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if (!scan_whitespace_and_comments(lexer)) return false;
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if (!scan_whitespace_and_comments(lexer, scanned_comment)) {
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return false;
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}
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switch (lexer->lookahead) {
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case ',':
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@ -140,7 +158,9 @@ static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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return false;
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case '{':
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if (valid_symbols[FUNCTION_SIGNATURE_AUTOMATIC_SEMICOLON]) return false;
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if (valid_symbols[FUNCTION_SIGNATURE_AUTOMATIC_SEMICOLON]) {
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return false;
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}
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break;
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// Don't insert a semicolon before a '[' or '(', unless we're parsing
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@ -148,7 +168,9 @@ static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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// the validity of a binary operator token.
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case '(':
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case '[':
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if (valid_symbols[BINARY_OPERATORS]) return false;
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if (valid_symbols[LOGICAL_OR]) {
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return false;
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}
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break;
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// Insert a semicolon before `--` and `++`, but not before binary `+` or `-`.
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@ -169,17 +191,25 @@ static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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case 'i':
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skip(lexer);
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if (lexer->lookahead != 'n') return true;
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if (lexer->lookahead != 'n') {
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return true;
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}
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skip(lexer);
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if (!iswalpha(lexer->lookahead)) return false;
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if (!iswalpha(lexer->lookahead)) {
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return false;
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}
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for (unsigned i = 0; i < 8; i++) {
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if (lexer->lookahead != "stanceof"[i]) return true;
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if (lexer->lookahead != "stanceof"[i]) {
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return true;
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}
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skip(lexer);
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}
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if (!iswalpha(lexer->lookahead)) return false;
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if (!iswalpha(lexer->lookahead)) {
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return false;
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}
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break;
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}
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@ -187,34 +217,42 @@ static bool scan_automatic_semicolon(TSLexer *lexer, const bool *valid_symbols){
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}
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static bool scan_ternary_qmark(TSLexer *lexer) {
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for(;;) {
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if (!iswspace(lexer->lookahead)) break;
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for (;;) {
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if (!iswspace(lexer->lookahead)) {
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break;
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}
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skip(lexer);
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}
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if (lexer->lookahead == '?') {
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advance(lexer);
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if (lexer->lookahead == '?') return false;
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/* Optional chaining. */
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if (lexer->lookahead == '.') return false;
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if (lexer->lookahead == '?' || lexer->lookahead == '.') {
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return false;
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}
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lexer->mark_end(lexer);
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lexer->result_symbol = TERNARY_QMARK;
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/* TypeScript optional arguments contain the ?: sequence, possibly
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with whitespace. */
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for(;;) {
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if (!iswspace(lexer->lookahead)) break;
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for (;;) {
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if (!iswspace(lexer->lookahead)) {
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break;
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}
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advance(lexer);
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}
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if (lexer->lookahead == ':') return false;
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if (lexer->lookahead == ')') return false;
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if (lexer->lookahead == ',') return false;
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if (lexer->lookahead == ':' || lexer->lookahead == ')' || lexer->lookahead == ',') {
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return false;
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}
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if (lexer->lookahead == '.') {
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advance(lexer);
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if (iswdigit(lexer->lookahead)) return true;
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if (iswdigit(lexer->lookahead)) {
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return true;
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}
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return false;
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}
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return true;
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@ -222,23 +260,65 @@ static bool scan_ternary_qmark(TSLexer *lexer) {
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return false;
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}
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static bool scan_closing_comment(TSLexer *lexer) {
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while (iswspace(lexer->lookahead) || lexer->lookahead == 0x2028 || lexer->lookahead == 0x2029) {
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skip(lexer);
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}
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const char *comment_start = "<!--";
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const char *comment_end = "-->";
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if (lexer->lookahead == '<') {
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for (unsigned i = 0; i < 4; i++) {
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if (lexer->lookahead != comment_start[i]) {
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return false;
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}
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advance(lexer);
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}
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} else if (lexer->lookahead == '-') {
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for (unsigned i = 0; i < 3; i++) {
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if (lexer->lookahead != comment_end[i]) {
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return false;
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}
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advance(lexer);
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}
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} else {
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return false;
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}
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while (lexer->lookahead != 0 && lexer->lookahead != '\n' && lexer->lookahead != 0x2028 &&
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lexer->lookahead != 0x2029) {
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advance(lexer);
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}
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lexer->result_symbol = HTML_COMMENT;
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lexer->mark_end(lexer);
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return true;
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}
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static inline bool external_scanner_scan(void *payload, TSLexer *lexer, const bool *valid_symbols) {
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if (valid_symbols[TEMPLATE_CHARS]) {
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if (valid_symbols[AUTOMATIC_SEMICOLON]) return false;
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if (valid_symbols[AUTOMATIC_SEMICOLON]) {
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return false;
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}
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return scan_template_chars(lexer);
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} else if (
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valid_symbols[AUTOMATIC_SEMICOLON] ||
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valid_symbols[FUNCTION_SIGNATURE_AUTOMATIC_SEMICOLON]
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) {
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bool ret = scan_automatic_semicolon(lexer, valid_symbols);
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if (!ret && valid_symbols[TERNARY_QMARK] && lexer->lookahead == '?')
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}
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if (valid_symbols[AUTOMATIC_SEMICOLON] || valid_symbols[FUNCTION_SIGNATURE_AUTOMATIC_SEMICOLON]) {
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bool scanned_comment = false;
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bool ret = scan_automatic_semicolon(lexer, valid_symbols, &scanned_comment);
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if (!ret && !scanned_comment && valid_symbols[TERNARY_QMARK] && lexer->lookahead == '?') {
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return scan_ternary_qmark(lexer);
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}
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return ret;
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}
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if (valid_symbols[TERNARY_QMARK]) {
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return scan_ternary_qmark(lexer);
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}
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return false;
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if (valid_symbols[HTML_COMMENT] && !valid_symbols[LOGICAL_OR] && !valid_symbols[ESCAPE_SEQUENCE]) {
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return scan_closing_comment(lexer);
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}
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return false;
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}
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Wilfred Hughes