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Add #must_tail (similar syntax to #force_inline

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gingerBill
2026-01-15 16:32:52 +00:00
parent 7f509c01f1
commit 0366cd3304
6 changed files with 105 additions and 24 deletions
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23
src/parser.cpp
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@@ -2176,7 +2176,7 @@ gb_internal bool ast_on_same_line(Token const &x, Ast *yp) {
return x.pos.line == y.pos.line;
}
gb_internal Ast *parse_force_inlining_operand(AstFile *f, Token token) {
gb_internal Ast *parse_inlining_or_tailing_operand(AstFile *f, Token token) {
Ast *expr = parse_unary_expr(f, false);
Ast *e = strip_or_return_expr(expr);
if (e == nullptr) {
@@ -2187,11 +2187,14 @@ gb_internal Ast *parse_force_inlining_operand(AstFile *f, Token token) {
return ast_bad_expr(f, token, f->curr_token);
}
ProcInlining pi = ProcInlining_none;
ProcTailing pt = ProcTailing_none;
if (token.kind == Token_Ident) {
if (token.string == "force_inline") {
pi = ProcInlining_inline;
} else if (token.string == "force_no_inline") {
pi = ProcInlining_no_inline;
} else if (token.string == "must_tail") {
pt = ProcTailing_must_tail;
}
}
@@ -2211,6 +2214,14 @@ gb_internal Ast *parse_force_inlining_operand(AstFile *f, Token token) {
}
}
if (pt != ProcTailing_none) {
if (e->kind == Ast_ProcLit) {
e->ProcLit.tailing = pt;
} else if (e->kind == Ast_CallExpr) {
e->CallExpr.tailing = pt;
}
}
return expr;
}
@@ -2507,8 +2518,9 @@ gb_internal Ast *parse_operand(AstFile *f, bool lhs) {
syntax_error(tag, "#relative types have now been removed in favour of \"core:relative\"");
return ast_relative_type(f, tag, type);
} else if (name.string == "force_inline" ||
name.string == "force_no_inline") {
return parse_force_inlining_operand(f, name);
name.string == "force_no_inline" ||
name.string == "must_tail") {
return parse_inlining_or_tailing_operand(f, name);
}
return ast_basic_directive(f, token, name);
}
@@ -5399,8 +5411,9 @@ gb_internal Ast *parse_stmt(AstFile *f) {
expect_semicolon(f);
return stmt;
} else if (name.string == "force_inline" ||
name.string == "force_no_inline") {
Ast *expr = parse_force_inlining_operand(f, name);
name.string == "force_no_inline" ||
name.string == "must_tail") {
Ast *expr = parse_inlining_or_tailing_operand(f, name);
Ast *stmt = ast_expr_stmt(f, expr);
expect_semicolon(f);
return stmt;