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add pointer dereferencing operator

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This commit is contained in:
Andrew Kelley
2016-01-04 19:10:52 -07:00
parent 22c52f1eb6
commit e0aa0736be
6 changed files with 77 additions and 6 deletions
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14
src/codegen.cpp
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@@ -359,6 +359,13 @@ static LLVMValueRef gen_lvalue(CodeGen *g, AstNode *expr_node, AstNode *node,
}
} else if (node->type == NodeTypeFieldAccessExpr) {
target_ref = gen_field_ptr(g, node, out_type_entry);
} else if (node->type == NodeTypePrefixOpExpr) {
assert(node->data.prefix_op_expr.prefix_op == PrefixOpDereference);
AstNode *target_expr = node->data.prefix_op_expr.primary_expr;
TypeTableEntry *type_entry = get_expr_type(target_expr);
assert(type_entry->id == TypeTableEntryIdPointer);
*out_type_entry = type_entry->data.pointer.child_type;
return gen_expr(g, target_expr);
} else {
zig_panic("bad assign target");
}
@@ -397,11 +404,16 @@ static LLVMValueRef gen_prefix_op_expr(CodeGen *g, AstNode *node) {
case PrefixOpAddressOf:
case PrefixOpConstAddressOf:
{
add_debug_source_node(g, node);
TypeTableEntry *lvalue_type;
return gen_lvalue(g, node, expr_node, &lvalue_type);
}
case PrefixOpDereference:
{
LLVMValueRef expr = gen_expr(g, expr_node);
add_debug_source_node(g, node);
return LLVMBuildLoad(g->builder, expr, "");
}
}
zig_unreachable();
}