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<span class="Comment">// So far instructions can only contain linear lists of properties. Now we add</span>
<span class="Comment">// support for more complex trees of properties in dilated reagents. This will</span>
<span class="Comment">// come in handy later for expressing complex types, like "a dictionary from</span>
<span class="Comment">// (address to array of charaters) to (list of numbers)".</span>
<span class="Delimiter">:(scenario dilated_reagent_with_nested_brackets)</span>
def main [
<span class="Delimiter">{</span><span class="Constant">1</span>: number<span class="Delimiter">,</span> foo: <span class="Delimiter">(</span>bar <span class="Delimiter">(</span>baz quux<span class="Delimiter">))}</span><span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="traceContains">+parse: product: {1: "number", "foo": ("bar" ("baz" "quux"))}</span>
<span class="Delimiter">:(before "End Parsing Reagent Property(value)")</span>
value = parse_string_tree<span class="Delimiter">(</span>value<span class="Delimiter">);</span>
<span class="Delimiter">:(before "End Parsing Reagent Type Property(value)")</span>
value = parse_string_tree<span class="Delimiter">(</span>value<span class="Delimiter">);</span>
<span class="Delimiter">:(code)</span>
string_tree* parse_string_tree<span class="Delimiter">(</span>string_tree* s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>!s<span class="Delimiter">-></span>left && !s<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>s<span class="Delimiter">-></span>value<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span> != <span class="Constant">'('</span><span class="Delimiter">)</span> <span class="Identifier">return</span> s<span class="Delimiter">;</span>
string_tree* result = parse_string_tree<span class="Delimiter">(</span>s<span class="Delimiter">-></span>value<span class="Delimiter">);</span>
<span class="Normal">delete</span> s<span class="Delimiter">;</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string_tree* parse_string_tree<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
istringstream in<span class="Delimiter">(</span>s<span class="Delimiter">);</span>
in >> std::noskipws<span class="Delimiter">;</span>
<span class="Identifier">return</span> parse_string_tree<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
string_tree* parse_string_tree<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">NULL</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">')'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">NULL</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="Constant">'('</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
string_tree* result = <span class="Normal">new</span> string_tree<span class="Delimiter">(</span>next_word<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> <span class="Comment">// skip '('</span>
string_tree* result = <span class="Constant">NULL</span><span class="Delimiter">;</span>
string_tree** curr = &result<span class="Delimiter">;</span>
<span class="Normal">while</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> != <span class="Constant">')'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">));</span>
*curr = <span class="Normal">new</span> string_tree<span class="Delimiter">(</span><span class="Constant">""</span><span class="Delimiter">);</span>
skip_whitespace_but_not_newline<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>in<span class="Delimiter">.</span>peek<span class="Delimiter">()</span> == <span class="Constant">'('</span><span class="Delimiter">)</span>
<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>left = parse_string_tree<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">else</span>
<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>value = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
curr = &<span class="Delimiter">(</span>*curr<span class="Delimiter">)-></span>right<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
in<span class="Delimiter">.</span>get<span class="Delimiter">();</span> <span class="Comment">// skip ')'</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario dilated_reagent_with_type_tree)</span>
<span class="Special">% Hide_errors = true; // 'map' isn't defined yet</span>
def main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>foo <span class="Delimiter">(</span>address array character<span class="Delimiter">)</span> <span class="Delimiter">(</span>bar number<span class="Delimiter">))}</span><span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="Comment"># just to avoid errors</span>
container foo [
]
container bar [
]
<span class="traceContains">+parse: product: {1: ("foo" ("address" "array" "character") ("bar" "number"))}</span>
<span class="Delimiter">:(scenario dilated_reagent_in_static_array)</span>
def main [
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> <- </span>create-array
<span class="Constant">5</span>:address:number<span class="Special"> <- </span><span class="Normal">new</span> number:type
<span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> <- </span>put-index <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)},</span> <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">5</span>:address:number
*<span class="Constant">5</span>:address:number<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Constant">6</span>:number<span class="Special"> <- </span>copy *<span class="Constant">5</span>:address:number
]
<span class="traceContains">+run: creating array of size 4</span>
<span class="traceContains">+mem: storing 34 in location 6</span>
<span class="Comment">//: an exception is 'new', which takes a type tree as its ingredient *value*</span>
<span class="Delimiter">:(scenario dilated_reagent_with_new)</span>
def main [
<span class="Normal">x</span>:address:address:number<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>address number<span class="Delimiter">)</span>: type<span class="Delimiter">}</span>
]
<span class="traceContains">+new: size of ("address" "number") is 1</span>
<span class="Delimiter">:(before "End Post-processing(expected_product) When Checking 'new'")</span>
<span class="Delimiter">{</span>
string_tree* tmp_type_names = parse_string_tree<span class="Delimiter">(</span>expected_product<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Normal">delete</span> expected_product<span class="Delimiter">.</span>type<span class="Delimiter">;</span>
expected_product<span class="Delimiter">.</span>type = new_type_tree<span class="Delimiter">(</span>tmp_type_names<span class="Delimiter">);</span>
<span class="Normal">delete</span> tmp_type_names<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(before "End Post-processing(type_name) When Converting 'new'")</span>
type_name = parse_string_tree<span class="Delimiter">(</span>type_name<span class="Delimiter">);</span>
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