Zig 0.17.0-dev (Split by item)

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transReturnStmt

Translator.transReturnStmt

fn transReturnStmt(t: *Translator, scope: *Scope, return_stmt: Node.ReturnStmt) TransError!ZigNode

File

lib/compiler/translate-c/Translator.zig:1725

Code

fn transReturnStmt(t: *Translator, scope: *Scope, return_stmt: Node.ReturnStmt) TransError!ZigNode {
    switch (return_stmt.operand) {
        .none => return ZigTag.return_void.init(),
        .expr => |operand| {
            const rhs = try t.transExprCoercing(scope, operand, .used);
            const return_qt = scope.findBlockReturnType();
            return ZigTag.@"return".create(t.arena, try t.toNonBool(rhs, return_qt));
        },
        .implicit => |zero| {
            if (zero) return ZigTag.@"return".create(t.arena, ZigTag.zero_literal.init());

            const return_qt = scope.findBlockReturnType();
            if (return_qt.is(t.comp, .void)) return ZigTag.empty_block.init();

            return ZigTag.@"return".create(t.arena, ZigTag.undefined_literal.init());
        },
    }
}