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Diffstat (limited to '017parse_tree.cc')
-rw-r--r-- | 017parse_tree.cc | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/017parse_tree.cc b/017parse_tree.cc deleted file mode 100644 index 02170f6d..00000000 --- a/017parse_tree.cc +++ /dev/null @@ -1,124 +0,0 @@ -// So far instructions can only contain linear lists of properties. Now we add -// support for more complex trees of properties in dilated reagents. This will -// come in handy later for expressing complex types, like "a dictionary from -// (address to array of charaters) to (list of numbers)". -// -// Type trees aren't as general as s-expressions even if they look like them: -// the first element of a type tree is always an atom, and it can never be -// dotted (right->right->right->...->right is always NULL). -// -// For now you can't use the simpler 'colon-based' representation inside type -// trees. Once you start typing parens, keep on typing parens. - -void test_dilated_reagent_with_nested_brackets() { - load( - "def main [\n" - " {1: number, foo: (bar (baz quux))} <- copy 34\n" - "]\n" - ); - CHECK_TRACE_CONTENTS( - "parse: product: {1: \"number\", \"foo\": (\"bar\" (\"baz\" \"quux\"))}\n" - ); -} - -:(before "End Parsing Dilated Reagent Property(value)") -value = parse_string_tree(value); -:(before "End Parsing Dilated Reagent Type Property(type_names)") -type_names = parse_string_tree(type_names); - -:(code) -string_tree* parse_string_tree(string_tree* s) { - assert(s->atom); - if (!starts_with(s->value, "(")) return s; - string_tree* result = parse_string_tree(s->value); - delete s; - return result; -} - -string_tree* parse_string_tree(const string& s) { - istringstream in(s); - in >> std::noskipws; - return parse_string_tree(in); -} - -string_tree* parse_string_tree(istream& in) { - skip_whitespace_but_not_newline(in); - if (!has_data(in)) return NULL; - if (in.peek() == ')') { - in.get(); - return NULL; - } - if (in.peek() != '(') { - string s = next_word(in); - if (s.empty()) { - assert(!has_data(in)); - raise << "incomplete string tree at end of file (0)\n" << end(); - return NULL; - } - string_tree* result = new string_tree(s); - return result; - } - in.get(); // skip '(' - string_tree* result = NULL; - string_tree** curr = &result; - while (true) { - skip_whitespace_but_not_newline(in); - assert(has_data(in)); - if (in.peek() == ')') break; - *curr = new string_tree(NULL, NULL); - if (in.peek() == '(') { - (*curr)->left = parse_string_tree(in); - } - else { - string s = next_word(in); - if (s.empty()) { - assert(!has_data(in)); - raise << "incomplete string tree at end of file (1)\n" << end(); - return NULL; - } - (*curr)->left = new string_tree(s); - } - curr = &(*curr)->right; - } - in.get(); // skip ')' - assert(*curr == NULL); - return result; -} - -void test_dilated_reagent_with_type_tree() { - Hide_errors = true; // 'map' isn't defined yet - load( - "def main [\n" - " {1: (foo (address array character) (bar number))} <- copy 34\n" - "]\n" - "container foo [\n" - "]\n" - "container bar [\n" - "]\n" - ); - CHECK_TRACE_CONTENTS( - "parse: product: {1: (\"foo\" (\"address\" \"array\" \"character\") (\"bar\" \"number\"))}\n" - ); -} - -void test_dilated_empty_tree() { - load( - "def main [\n" - " {1: number, foo: ()} <- copy 34\n" - "]\n" - ); - CHECK_TRACE_CONTENTS( - "parse: product: {1: \"number\", \"foo\": ()}\n" - ); -} - -void test_dilated_singleton_tree() { - load( - "def main [\n" - " {1: number, foo: (bar)} <- copy 34\n" - "]\n" - ); - CHECK_TRACE_CONTENTS( - "parse: product: {1: \"number\", \"foo\": (\"bar\")}\n" - ); -} |