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implement IR analysis for async function calls

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See #727
This commit is contained in:
Andrew Kelley
2018-02-21 00:52:20 -05:00
parent 65a51b401c
commit 236bbe1183
8 changed files with 272 additions and 54 deletions
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10
src/parser.cpp
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@@ -2333,7 +2333,7 @@ static AstNode *ast_parse_block(ParseContext *pc, size_t *token_index, bool mand
}
/*
FnProto = option("nakedcc" | "stdcallcc" | "extern" | "async") "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
FnProto = option("nakedcc" | "stdcallcc" | "extern" | ("async" option("(" Expression ")"))) "fn" option(Symbol) ParamDeclList option("align" "(" Expression ")") option("section" "(" Expression ")") option("!") TypeExpr
*/
static AstNode *ast_parse_fn_proto(ParseContext *pc, size_t *token_index, bool mandatory, VisibMod visib_mod) {
Token *first_token = &pc->tokens->at(*token_index);
@@ -2341,12 +2341,18 @@ static AstNode *ast_parse_fn_proto(ParseContext *pc, size_t *token_index, bool m
CallingConvention cc;
bool is_extern = false;
AstNode *async_allocator_type_node = nullptr;
if (first_token->id == TokenIdKeywordNakedCC) {
*token_index += 1;
fn_token = ast_eat_token(pc, token_index, TokenIdKeywordFn);
cc = CallingConventionNaked;
} else if (first_token->id == TokenIdKeywordAsync) {
*token_index += 1;
Token *next_token = &pc->tokens->at(*token_index);
if (next_token->id == TokenIdLParen) {
async_allocator_type_node = ast_parse_type_expr(pc, token_index, true);
ast_eat_token(pc, token_index, TokenIdRParen);
}
fn_token = ast_eat_token(pc, token_index, TokenIdKeywordFn);
cc = CallingConventionAsync;
} else if (first_token->id == TokenIdKeywordStdcallCC) {
@@ -2383,6 +2389,7 @@ static AstNode *ast_parse_fn_proto(ParseContext *pc, size_t *token_index, bool m
node->data.fn_proto.visib_mod = visib_mod;
node->data.fn_proto.cc = cc;
node->data.fn_proto.is_extern = is_extern;
node->data.fn_proto.async_allocator_type = async_allocator_type_node;
Token *fn_name = &pc->tokens->at(*token_index);
@@ -2798,6 +2805,7 @@ void ast_visit_node_children(AstNode *node, void (*visit)(AstNode **, void *cont
visit_node_list(&node->data.fn_proto.params, visit, context);
visit_field(&node->data.fn_proto.align_expr, visit, context);
visit_field(&node->data.fn_proto.section_expr, visit, context);
visit_field(&node->data.fn_proto.async_allocator_type, visit, context);
break;
case NodeTypeFnDef:
visit_field(&node->data.fn_def.fn_proto, visit, context);