52 lines
2.8 KiB
Plaintext
52 lines
2.8 KiB
Plaintext
import symbol:*
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import tree:*
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import map:*
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import util:*
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import str:*
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import io:*
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import ast_nodes:*
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import ast_transformation:*
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import pass_common:*
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fun address_of_ensure_variable_lower(name_ast_map: *map<str, pair<*tree<symbol>,*ast_node>>, ast_to_syntax: *map<*ast_node, *tree<symbol>>) {
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var visited = hash_set<*ast_node>()
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name_ast_map->for_each(fun(name: str, syntax_ast_pair: pair<*tree<symbol>,*ast_node>) {
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var helper_before = fun(node: *ast_node, parent_chain: *stack<*ast_node>) {
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match(*node) {
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ast_node::function_call(backing) {
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if (is_function(backing.func) && backing.func->function.name == "&") {
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var addresse = backing.parameters[0]
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// Identifier is always fine. The other options are
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// function call, value, or cast. The only fine one here
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// is a function call of *
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if ( (is_function_call(addresse) &&
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!(is_function(addresse->function_call.func) &&
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(addresse->function_call.func->function.name == "*" ||
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addresse->function_call.func->function.name == "." ||
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addresse->function_call.func->function.name == "->" ||
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addresse->function_call.func->function.name == "[]"))) ||
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is_value(addresse) || is_cast(addresse) ) {
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// so we're a function call that's not * or a cast or value
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// so make a temp variable for us
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// Note that we don't have to worry about destruction because
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// all object stuff has already ran, so this isn't an object
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var enclosing_block_idx = parent_chain->index_from_top_satisfying(is_code_block)
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var enclosing_block = parent_chain->from_top(enclosing_block_idx)
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var before_block_parent = parent_chain->from_top(enclosing_block_idx-1)
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var ident = _ident("for_address_of_temp",
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backing.func->function.type->parameter_types[0],
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enclosing_block)
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var decl = _declaration(ident, addresse)
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add_before_in(decl, before_block_parent, enclosing_block)
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replace_with_in(addresse, ident, node)
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}
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}
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}
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}
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}
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run_on_tree(helper_before, empty_pass_second_half(), syntax_ast_pair.second, &visited)
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})
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}
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