motiejus/zig
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add root export declaration which is overridable by command line options

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This commit is contained in:
Andrew Kelley
2015-11-27 21:24:11 -07:00
parent 4cc95174a7
commit cb4773ce29
10 changed files with 206 additions and 30 deletions
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40
src/parser.cpp
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@@ -29,6 +29,8 @@ const char *node_type_str(NodeType node_type) {
switch (node_type) {
case NodeTypeRoot:
return "Root";
case NodeTypeRootExportDecl:
return "RootExportDecl";
case NodeTypeFnDef:
return "FnDef";
case NodeTypeFnDecl:
@@ -68,6 +70,11 @@ void ast_print(AstNode *node, int indent) {
ast_print(child, indent + 2);
}
break;
case NodeTypeRootExportDecl:
fprintf(stderr, "%s %s '%s'\n", node_type_str(node->type),
buf_ptr(&node->data.root_export_decl.type),
buf_ptr(&node->data.root_export_decl.name));
break;
case NodeTypeFnDef:
{
fprintf(stderr, "%s\n", node_type_str(node->type));
@@ -714,6 +721,36 @@ 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)
*/
AstNode *ast_parse(Buf *buf, ZigList<Token> *tokens) {
ParseContext pc = {0};
pc.buf = buf;
@@ -721,6 +758,9 @@ AstNode *ast_parse(Buf *buf, ZigList<Token> *tokens) {
pc.tokens = tokens;
int token_index = 0;
pc.root->data.root.root_export_decl = ast_parse_root_export_decl(&pc, &token_index);
ast_parse_top_level_decls(&pc, &token_index, &pc.root->data.root.top_level_decls);
if (token_index != tokens->length - 1) {