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<span class="Comment">//: For convenience, allow Mu types to be abbreviated.</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario type_abbreviations)</span>
type foo = number
def main [
<span class="Normal">a</span>:foo<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="traceContains">+transform: product type after expanding abbreviations: "number"</span>
<span class="Delimiter">:(before "End Globals")</span>
map<string<span class="Delimiter">,</span> type_tree*> Type_abbreviations<span class="Delimiter">,</span> Type_abbreviations_snapshot<span class="Delimiter">;</span>
<span class="SalientComment">//:: Defining type abbreviations.</span>
<span class="Delimiter">:(before "End Command Handlers")</span>
<span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>command == <span class="Constant">"type"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
load_type_abbreviations<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> load_type_abbreviations<span class="Delimiter">(</span>istream& in<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string new_type_name = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> || !new_type_name<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> || new_type_name<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"incomplete 'type' statement; must be of the form 'type <new type name> = <type expression>'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string arrow = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>has_data<span class="Delimiter">(</span>in<span class="Delimiter">)</span> || !arrow<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>arrow<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"incomplete 'type' statement 'type "</span> << new_type_name << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>arrow != <span class="Constant">"="</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"'type' statements must be of the form 'type <new type name> = <type expression>' but got 'type "</span> << new_type_name << <span class="Constant">' '</span> << arrow << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<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="Delimiter">{</span>
raise << <span class="Constant">"incomplete 'type' statement 'type "</span> << new_type_name << <span class="Constant">" ='</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string old = next_word<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>old<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"incomplete 'type' statement 'type "</span> << new_type_name << <span class="Constant">" ='</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
raise << <span class="Constant">"'type' statements must be of the form 'type <new type name> = <type expression>' but got 'type "</span> << new_type_name << <span class="Constant">' '</span> << arrow << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> new_type_name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"'type' conflict: '"</span> << new_type_name << <span class="Constant">"' defined as both '"</span> << names_to_string_without_quotes<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> new_type_name<span class="Delimiter">))</span> << <span class="Constant">"' and '"</span> << old << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
trace<span class="Delimiter">(</span><span class="Constant">9990</span><span class="Delimiter">,</span> <span class="Constant">"type"</span><span class="Delimiter">)</span> << <span class="Constant">"alias "</span> << new_type_name << <span class="Constant">" = "</span> << old << end<span class="Delimiter">();</span>
type_tree* old_type = new_type_tree<span class="Delimiter">(</span>old<span class="Delimiter">);</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> new_type_name<span class="Delimiter">,</span> old_type<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
type_tree* new_type_tree<span class="Delimiter">(</span><span class="Normal">const</span> string& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string_tree* type_names = starts_with<span class="Delimiter">(</span>x<span class="Delimiter">,</span> <span class="Constant">"("</span><span class="Delimiter">)</span> ? parse_string_tree<span class="Delimiter">(</span>x<span class="Delimiter">)</span> : parse_string_list<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
type_tree* result = new_type_tree<span class="Delimiter">(</span>type_names<span class="Delimiter">);</span>
<span class="Normal">delete</span> type_names<span class="Delimiter">;</span>
expand_type_abbreviations<span class="Delimiter">(</span>result<span class="Delimiter">);</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string_tree* parse_string_list<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_property_list<span class="Delimiter">(</span>in<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario type_error1)</span>
<span class="Special">% Hide_errors = true;</span>
type foo
<span class="traceContains">+error: incomplete 'type' statement 'type foo'</span>
<span class="Delimiter">:(scenario type_error2)</span>
<span class="Special">% Hide_errors = true;</span>
type foo =
<span class="traceContains">+error: incomplete 'type' statement 'type foo ='</span>
<span class="Delimiter">:(scenario type_error3)</span>
<span class="Special">% Hide_errors = true;</span>
type foo bar baz
<span class="traceContains">+error: 'type' statements must be of the form 'type <new type name> = <type expression>' but got 'type foo bar'</span>
<span class="Delimiter">:(scenario type_conflict_error)</span>
<span class="Special">% Hide_errors = true;</span>
type foo = bar
type foo = baz
<span class="traceContains">+error: 'type' conflict: 'foo' defined as both 'bar' and 'baz'</span>
<span class="Delimiter">:(scenario type_abbreviation_for_compound)</span>
type foo = address:number
def main [
<span class="Normal">a</span>:foo<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+transform: product type after expanding abbreviations: ("address" "number")</span>
<span class="Comment">//: cleaning up type abbreviations between tests and before exiting</span>
<span class="Delimiter">:(before "End save_snapshots")</span>
Type_abbreviations_snapshot = Type_abbreviations<span class="Delimiter">;</span>
<span class="Delimiter">:(before "End restore_snapshots")</span>
restore_type_abbreviations<span class="Delimiter">();</span>
<span class="Delimiter">:(before "End One-time Setup")</span>
atexit<span class="Delimiter">(</span>clear_type_abbreviations<span class="Delimiter">);</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> restore_type_abbreviations<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> type_tree*>::iterator p = Type_abbreviations<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != Type_abbreviations<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type_abbreviations_snapshot<span class="Delimiter">,</span> p<span class="Delimiter">-></span>first<span class="Delimiter">))</span>
<span class="Normal">delete</span> p<span class="Delimiter">-></span>second<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
Type_abbreviations<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
Type_abbreviations = Type_abbreviations_snapshot<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> clear_type_abbreviations<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> type_tree*>::iterator p = Type_abbreviations<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != Type_abbreviations<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span class="Normal">delete</span> p<span class="Delimiter">-></span>second<span class="Delimiter">;</span>
Type_abbreviations<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="SalientComment">//:: A few default abbreviations.</span>
<span class="Delimiter">:(before "End Mu Types Initialization")</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> <span class="Constant">"&"</span><span class="Delimiter">,</span> new_type_tree<span class="Delimiter">(</span><span class="Constant">"address"</span><span class="Delimiter">));</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> <span class="Constant">"@"</span><span class="Delimiter">,</span> new_type_tree<span class="Delimiter">(</span><span class="Constant">"array"</span><span class="Delimiter">));</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> <span class="Constant">"num"</span><span class="Delimiter">,</span> new_type_tree<span class="Delimiter">(</span><span class="Constant">"number"</span><span class="Delimiter">));</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> <span class="Constant">"bool"</span><span class="Delimiter">,</span> new_type_tree<span class="Delimiter">(</span><span class="Constant">"boolean"</span><span class="Delimiter">));</span>
put<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> <span class="Constant">"char"</span><span class="Delimiter">,</span> new_type_tree<span class="Delimiter">(</span><span class="Constant">"character"</span><span class="Delimiter">));</span>
<span class="Delimiter">:(scenario use_type_abbreviations_when_declaring_type_abbreviations)</span>
type foo = &:num
def main [
<span class="Normal">a</span>:foo<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
<span class="traceContains">+transform: product type after expanding abbreviations: ("address" "number")</span>
<span class="SalientComment">//:: Expand type aliases before running.</span>
<span class="Comment">//: We'll do this in a transform so that we don't need to define abbreviations</span>
<span class="Comment">//: before we use them.</span>
<span class="Delimiter">:(scenario abbreviations_for_address_and_array)</span>
def main [
f <span class="Constant">1</span>:&:num <span class="Comment"># abbreviation for 'address:number'</span>
f <span class="Constant">2</span>:@:num <span class="Comment"># abbreviation for 'array:number'</span>
f <span class="Constant">3</span>:&:@:num <span class="Comment"># combining '&' and '@'</span>
f <span class="Constant">4</span>:&:&:@:&:@:num <span class="Comment"># ..any number of times</span>
f <span class="Delimiter">{</span><span class="Constant">5</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>& num<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span> <span class="Comment"># support for dilated reagents and more complex parse trees</span>
]
def f [
]
<span class="traceContains">+transform: --- expand type abbreviations in recipe 'main'</span>
<span class="traceContains">+transform: ingredient type after expanding abbreviations: ("address" "number")</span>
<span class="traceContains">+transform: ingredient type after expanding abbreviations: ("array" "number")</span>
<span class="traceContains">+transform: ingredient type after expanding abbreviations: ("address" "array" "number")</span>
<span class="traceContains">+transform: ingredient type after expanding abbreviations: ("address" "address" "array" "address" "array" "number")</span>
<span class="traceContains">+transform: ingredient type after expanding abbreviations: ("array" ("address" "number") "3")</span>
<span class="Delimiter">:(before "Transform.push_back(update_instruction_operations)")</span>
Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>expand_type_abbreviations<span class="Delimiter">);</span> <span class="Comment">// idempotent</span>
<span class="Comment">// Begin Type Modifying Transforms</span>
<span class="Comment">// End Type Modifying Transforms</span>
<span class="Delimiter">:(code)</span>
<span class="Normal">void</span> expand_type_abbreviations<span class="Delimiter">(</span><span class="Normal">const</span> recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
expand_type_abbreviations<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> expand_type_abbreviations<span class="Delimiter">(</span><span class="Normal">const</span> recipe& caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"--- expand type abbreviations in recipe '"</span> << caller<span class="Delimiter">.</span>name << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> instruction& inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"instruction '"</span> << inst<span class="Delimiter">.</span>original_string << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
expand_type_abbreviations<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"ingredient type after expanding abbreviations: "</span> << names_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
expand_type_abbreviations<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"product type after expanding abbreviations: "</span> << names_to_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Comment">// End Expand Type Abbreviations(caller)</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> expand_type_abbreviations<span class="Delimiter">(</span>type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
expand_type_abbreviations<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
expand_type_abbreviations<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">))</span>
*type = type_tree<span class="Delimiter">(</span>*get<span class="Delimiter">(</span>Type_abbreviations<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
</pre>
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