gbdev/rgbds
1
0
Fork 0
mirror of https://github.com/gbdev/rgbds.git synced 2026-05-08 10:59:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

Small optimization to skipToLeadingKeyword

Browse Source
This commit is contained in:
Rangi42
2026-04-27 14:26:47 +02:00
parent 37d39f91f6
commit eeb3a73210
1 changed files with 6 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/asm/lexer.cpp
+6 -1
View File
@@ -2148,17 +2148,22 @@ finish: // Can't `break` out of a nested `for`-`switch`
// valid at the start of their lines, which enables ignoring everything except // valid at the start of their lines, which enables ignoring everything except
// the leading keyword in lines that have one (as well as line continuations). // the leading keyword in lines that have one (as well as line continuations).
// //
// The only keywords it needs to recognize are case-insensitive `IF`, `ELIF`,
// `ELSE`, `ENDC`, `REPT`, `FOR`, `ENDR`, and `ENDM` (not `MACRO`).
//
// Note that when these constructs are *evaluated*, they can perform expansions // Note that when these constructs are *evaluated*, they can perform expansions
// (for macro args, interpolations, and macro invocations) which may produce // (for macro args, interpolations, and macro invocations) which may produce
// tokens that would change how these constructs were captured or skipped, if // tokens that would change how these constructs were captured or skipped, if
// they had been produced during the capture/skip non-evaluating phase. // they had been produced during the capture/skip non-evaluating phase.
static Token skipToLeadingKeyword() { static Token skipToLeadingKeyword() {
assume(lexerState->disableExpansions);
for (;;) { for (;;) {
if (lexerState->atLineStart) { if (lexerState->atLineStart) {
lexerState->atLineStart = false; lexerState->atLineStart = false;
if (int c = skipChars(isBlankSpace); c == EOF) { if (int c = skipChars(isBlankSpace); c == EOF) {
return Token(T_(YYEOF)); return Token(T_(YYEOF));
} else if (startsIdentifier(c) && c != '.') { } else if (isLetter(c)) {
shiftChar(); shiftChar();
std::string keyword(1, c); std::string keyword(1, c);
for (c = peek(); continuesIdentifier(c) && c != '.'; c = nextChar()) { for (c = peek(); continuesIdentifier(c) && c != '.'; c = nextChar()) {