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ability to specify body of an extern function

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closes #101
This commit is contained in:
Andrew Kelley
2016-04-28 16:04:44 -07:00
parent a299de2265
commit 46b0b84b90
4 changed files with 32 additions and 13 deletions
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25
src/parser.cpp
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@@ -2414,27 +2414,46 @@ static AstNode *ast_parse_fn_proto(ParseContext *pc, int *token_index, bool mand
}
/*
FnDef = option("inline") FnProto Block
FnDef = option("inline" | "extern") FnProto Block
*/
static AstNode *ast_parse_fn_def(ParseContext *pc, int *token_index, bool mandatory,
ZigList<AstNode*> *directives, VisibMod visib_mod)
{
Token *first_token = &pc->tokens->at(*token_index);
bool is_inline;
bool is_extern;
if (first_token->id == TokenIdKeywordInline) {
*token_index += 1;
is_inline = true;
is_extern = false;
} else if (first_token->id == TokenIdKeywordExtern) {
*token_index += 1;
is_extern = true;
is_inline = false;
} else {
is_inline = false;
is_extern = false;
}
AstNode *fn_proto = ast_parse_fn_proto(pc, token_index, mandatory, directives, visib_mod);
if (!fn_proto)
if (!fn_proto) {
if (is_inline || is_extern) {
*token_index -= 1;
}
return nullptr;
AstNode *node = ast_create_node(pc, NodeTypeFnDef, first_token);
}
fn_proto->data.fn_proto.is_inline = is_inline;
fn_proto->data.fn_proto.is_extern = is_extern;
Token *semi_token = &pc->tokens->at(*token_index);
if (semi_token->id == TokenIdSemicolon) {
*token_index += 1;
normalize_parent_ptrs(fn_proto);
return fn_proto;
}
AstNode *node = ast_create_node(pc, NodeTypeFnDef, first_token);
node->data.fn_def.fn_proto = fn_proto;
node->data.fn_def.body = ast_parse_block(pc, token_index, true);
normalize_parent_ptrs(node);