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add directive to specify root export version

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This commit is contained in:
Andrew Kelley
2015-11-30 02:11:31 -07:00
parent ac0c5a3707
commit 8f0f318c39
8 changed files with 128 additions and 75 deletions
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75
src/parser.cpp
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@@ -1195,6 +1195,44 @@ static AstNode *ast_parse_extern_block(ParseContext *pc, int *token_index, bool
zig_unreachable();
}
/*
RootExportDecl : many(Directive) token(Export) token(Symbol) token(String) token(Semicolon)
*/
static AstNode *ast_parse_root_export_decl(ParseContext *pc, int *token_index, bool mandatory) {
assert(mandatory == false);
Token *export_kw = &pc->tokens->at(*token_index);
if (export_kw->id != TokenIdKeywordExport)
return nullptr;
Token *export_type = &pc->tokens->at(*token_index + 1);
if (export_type->id != TokenIdSymbol)
return nullptr;
*token_index += 2;
AstNode *node = ast_create_node(NodeTypeRootExportDecl, export_kw);
node->data.root_export_decl.directives = pc->directive_list;
pc->directive_list = nullptr;
ast_buf_from_token(pc, export_type, &node->data.root_export_decl.type);
Token *export_name = &pc->tokens->at(*token_index);
*token_index += 1;
ast_expect_token(pc, export_name, TokenIdStringLiteral);
parse_string_literal(pc, export_name, &node->data.root_export_decl.name);
Token *semicolon = &pc->tokens->at(*token_index);
*token_index += 1;
ast_expect_token(pc, semicolon, TokenIdSemicolon);
return node;
}
/*
TopLevelDecl : FnDef | ExternBlock | RootExportDecl
*/
static void ast_parse_top_level_decls(ParseContext *pc, int *token_index, ZigList<AstNode *> *top_level_decls) {
for (;;) {
Token *directive_token = &pc->tokens->at(*token_index);
@@ -1202,6 +1240,12 @@ static void ast_parse_top_level_decls(ParseContext *pc, int *token_index, ZigLis
pc->directive_list = allocate<ZigList<AstNode*>>(1);
ast_parse_directives(pc, token_index, pc->directive_list);
AstNode *root_export_decl_node = ast_parse_root_export_decl(pc, token_index, false);
if (root_export_decl_node) {
top_level_decls->append(root_export_decl_node);
continue;
}
AstNode *fn_decl_node = ast_parse_fn_def(pc, token_index, false);
if (fn_decl_node) {
top_level_decls->append(fn_decl_node);
@@ -1224,41 +1268,12 @@ static void ast_parse_top_level_decls(ParseContext *pc, int *token_index, ZigLis
zig_unreachable();
}
static AstNode *ast_parse_root_export_decl(ParseContext *pc, int *token_index) {
Token *export_kw = &pc->tokens->at(*token_index);
if (export_kw->id != TokenIdKeywordExport)
return nullptr;
*token_index += 1;
AstNode *node = ast_create_node(NodeTypeRootExportDecl, export_kw);
Token *export_type = &pc->tokens->at(*token_index);
*token_index += 1;
ast_expect_token(pc, export_type, TokenIdSymbol);
ast_buf_from_token(pc, export_type, &node->data.root_export_decl.type);
Token *export_name = &pc->tokens->at(*token_index);
*token_index += 1;
ast_expect_token(pc, export_name, TokenIdStringLiteral);
parse_string_literal(pc, export_name, &node->data.root_export_decl.name);
Token *semicolon = &pc->tokens->at(*token_index);
*token_index += 1;
ast_expect_token(pc, semicolon, TokenIdSemicolon);
return node;
}
/*
Root : RootExportDecl many(TopLevelDecl) token(EOF)
Root : many(TopLevelDecl) token(EOF)
*/
static AstNode *ast_parse_root(ParseContext *pc, int *token_index) {
AstNode *node = ast_create_node(NodeTypeRoot, &pc->tokens->at(*token_index));
node->data.root.root_export_decl = ast_parse_root_export_decl(pc, token_index);
ast_parse_top_level_decls(pc, token_index, &node->data.root.top_level_decls);
if (*token_index != pc->tokens->length - 1) {