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#alias type declarations; core library additions; _global import name for the global scope

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This commit is contained in:
gingerBill
2017-10-29 11:35:21 +00:00
parent 0ed34af19d
commit a43b89f36e
18 changed files with 367 additions and 49 deletions
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21
src/parser.cpp
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@@ -407,6 +407,10 @@ AST_NODE_KIND(_TypeBegin, "", i32) \
Token token; \
AstNode *type; \
}) \
AST_NODE_KIND(AliasType, "alias type", struct { \
Token token; \
AstNode *type; \
}) \
AST_NODE_KIND(PolyType, "polymorphic type", struct { \
Token token; \
AstNode *type; \
@@ -611,6 +615,7 @@ Token ast_node_token(AstNode *node) {
case AstNode_TypeType: return node->TypeType.token;
case AstNode_HelperType: return node->HelperType.token;
case AstNode_AliasType: return node->AliasType.token;
case AstNode_PolyType: return node->PolyType.token;
case AstNode_ProcType: return node->ProcType.token;
case AstNode_PointerType: return node->PointerType.token;
@@ -857,6 +862,9 @@ AstNode *clone_ast_node(gbAllocator a, AstNode *node) {
case AstNode_HelperType:
n->HelperType.type = clone_ast_node(a, n->HelperType.type);
break;
case AstNode_AliasType:
n->AliasType.type = clone_ast_node(a, n->AliasType.type);
break;
case AstNode_ProcType:
n->ProcType.params = clone_ast_node(a, n->ProcType.params);
n->ProcType.results = clone_ast_node(a, n->ProcType.results);
@@ -1411,6 +1419,13 @@ AstNode *ast_helper_type(AstFile *f, Token token, AstNode *type) {
return result;
}
AstNode *ast_alias_type(AstFile *f, Token token, AstNode *type) {
AstNode *result = make_ast_node(f, AstNode_AliasType);
result->AliasType.token = token;
result->AliasType.type = type;
return result;
}
AstNode *ast_poly_type(AstFile *f, Token token, AstNode *type, AstNode *specialization) {
AstNode *result = make_ast_node(f, AstNode_PolyType);
@@ -2256,8 +2271,10 @@ AstNode *parse_operand(AstFile *f, bool lhs) {
if (allow_token(f, Token_type)) {
return ast_helper_type(f, token, parse_type(f));
}
Token name = expect_token(f, Token_Ident);
if (name.string == "run") {
Token name = expect_token(f, Token_Ident);
if (name.string == "alias") {
return ast_alias_type(f, token, parse_type(f));
} else if (name.string == "run") {
AstNode *expr = parse_expr(f, false);
operand = ast_run_expr(f, token, name, expr);
if (unparen_expr(expr)->kind != AstNode_CallExpr) {