motiejus/zig
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backport copy elision changes

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This commit contains everything from the copy-elision-2
branch that does not have to do with copy elision directly,
but is generally useful for master branch.

 * All const values know their parents, when applicable, not
   just structs and unions.
 * Null pointers in const values are represented explicitly,
   rather than as a HardCodedAddr value of 0.
 * Rename "maybe" to "optional" in various code locations.
 * Separate DeclVarSrc and DeclVarGen
 * Separate PtrCastSrc and PtrCastGen
 * Separate CmpxchgSrc and CmpxchgGen
 * Represent optional error set as an integer, using the 0 value.
   In a const value, it uses nullptr.
 * Introduce type_has_one_possible_value and use it where applicable.
 * Fix debug builds not setting memory to 0xaa when storing
   undefined.
 * Separate the type of a variable from the const value of a variable.
 * Use copy_const_val where appropriate.
 * Rearrange structs to pack data more efficiently.
 * Move test/cases/* to test/behavior/*
 * Use `std.debug.assertOrPanic` in behavior tests instead of
   `std.debug.assert`.
 * Fix outdated slice syntax in docs.
This commit is contained in:
Andrew Kelley
2019-01-29 21:47:26 -05:00
parent 9c328b4291
commit 581edd643f
108 changed files with 3836 additions and 2933 deletions
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8
src/ast_render.cpp
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@@ -233,8 +233,8 @@ static const char *node_type_str(NodeType node_type) {
return "ErrorType";
case NodeTypeIfErrorExpr:
return "IfErrorExpr";
case NodeTypeTestExpr:
return "TestExpr";
case NodeTypeIfOptional:
return "IfOptional";
case NodeTypeErrorSetDecl:
return "ErrorSetDecl";
case NodeTypeCancel:
@@ -387,7 +387,7 @@ static bool statement_terminates_without_semicolon(AstNode *node) {
if (node->data.if_err_expr.else_node)
return statement_terminates_without_semicolon(node->data.if_err_expr.else_node);
return node->data.if_err_expr.then_node->type == NodeTypeBlock;
case NodeTypeTestExpr:
case NodeTypeIfOptional:
if (node->data.test_expr.else_node)
return statement_terminates_without_semicolon(node->data.test_expr.else_node);
return node->data.test_expr.then_node->type == NodeTypeBlock;
@@ -974,7 +974,7 @@ static void render_node_extra(AstRender *ar, AstNode *node, bool grouped) {
}
break;
}
case NodeTypeTestExpr:
case NodeTypeIfOptional:
{
fprintf(ar->f, "if (");
render_node_grouped(ar, node->data.test_expr.target_node);