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223 行
7.0 KiB
223 行
7.0 KiB
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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struct Symbol {
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char *name;
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int class, selector;
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};
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struct Symbol *newSymbol(char *name)
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{
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struct Symbol *symbol = malloc(sizeof(*symbol));
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symbol->name = strdup(name);
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symbol->class = 0;
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symbol->selector = 0;
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return symbol;
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}
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struct Symbol **symbols = 0;
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int nSymbols = 0;
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struct Symbol *intern(char *name)
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{
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int lo = 0;
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int hi = nSymbols - 1;
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while (lo <= hi ) {
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int mid = (lo+hi)/2;
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int cmp = strcmp(name, symbols[mid]->name);
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if (cmp > 0) lo = mid + 1;
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else if (cmp < 0) hi = mid - 1;
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else return symbols[mid];
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}
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symbols = realloc(symbols, sizeof(*symbols) * ++nSymbols);
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memmove(symbols + lo + 1, symbols + lo, sizeof(*symbols)*(nSymbols - lo - 1));
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return symbols[lo] = newSymbol(name);
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}
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typedef void *(*method_t)();
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void *method_dnu()
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{
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printf("method not found\n");
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exit(1);
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return 0;
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}
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method_t **methods = 0;
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int nClasses = 0;
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int nSelectors = 0;
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int ensureClass(struct Symbol *symbol)
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{
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if (symbol->class == 0) {
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if (nClasses == 0) nClasses++;
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symbol->class = nClasses++;
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methods = realloc(methods, sizeof(*methods)*nClasses);
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methods[symbol->class] = malloc(sizeof(*methods)*nSelectors);
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for (int i = 0; i<nSelectors; ++i)
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methods[symbol->class][i] = method_dnu;
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}
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return symbol->class;
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}
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int ensureSelector(struct Symbol *symbol)
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{
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if (symbol->selector == 0) {
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if (nSelectors == 0) nSelectors++;
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symbol->selector = nSelectors++;
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for (int i = 0; i<nClasses; ++i) {
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methods[i] = realloc(methods[i], sizeof(**methods)*nSelectors);
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methods[i][nSelectors-1] = method_dnu;
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}
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}
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return symbol->selector;
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}
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int findClass(char *class)
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{
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return ensureClass(intern(class));
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}
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int findSelector(char *selector)
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{
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return ensureSelector(intern(selector));
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}
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void addMethod(int class, int selector, method_t method)
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{
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methods[class][selector] = method;
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}
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#define lookup(C, S) (methods[C][S])
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struct Object {
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int class;
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};
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#define send(R, M, ...) ({ struct Object *__ = (struct Object *)(R); lookup(__->class, _selector_##M)(__, ##__VA_ARGS__); })
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@import("parsimonyLibrary/boot.mc")
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@{
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program.objects = {};
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program.objects.class = {};
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program.objects.methods = {};
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class()
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{
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program.objects.function = "class";
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nil;
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}
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method(object_name)
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{
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program.objects.currentClassName = object_name;
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program.objects.function = "method";
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nil;
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}
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constructor(object_name) {
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program.objects.currentClassName = object_name;
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program.objects.function = "constructor";
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nil;
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}
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send(object, method)
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{
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// program.mem = newId(string(object));
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rawSend = (`declaration send(obj, met););
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rawSend.semicolon = null;
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rawSend.declarators[0].paramTypeL[0].identifier = object;
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rawSend.declarators[0].paramTypeL[2].identifier = method;
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treeCopy(rawSend);
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}
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everyExternalDeclaration(s)
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{
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if (program.objects.function == "class") {
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program.objects.class[program.last.name.identifier] = {};
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for (i=length(program.last.declarationL); i>0; i--) {
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program.last.declarationL[i] = program.last.declarationL[i-1];
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};
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program.last.declarationL[0] = treeCopy(`declaration int class; );
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program.objects.function = "none";
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return s;
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}
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if (program.objects.function == "method") {
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intern(program.objects.methods, string(program.last.declarators.declarators.identifier));
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for (i in program.objects.class) {
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if (string(i) == string(program.objects.currentClassName)) intern(program.objects.class[i], string(program.last.declarators.declarators.identifier));
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}
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program.last.declarators.declarators.identifier = string(program.objects.currentClassName) + "_" + string(program.last.declarators.declarators.identifier);
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param = (`declaration struct __oop *__self;
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);
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param.semicolon = null;
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if (length(s.declarators.paramTypeL) > 0) {
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append(s.declarators.paramTypeL, newComma());
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append(s.declarators.paramTypeL, treeCopy(param));
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} else {
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s.declarators.paramTypeL = {};
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s.declarators.paramTypeL[0] = treeCopy(param);
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}
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tmp = {};
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tmp[0] = (`declaration struct @(treeCopy(newId(string(program.objects.currentClassName)))) *self = (struct @(newId(string(program.objects.currentClassName))) *) __self;
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);
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/////////////////////// FIX ME /////////////////////////////// MAYBE CONTEXT WITH GLOBAL
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// tmp[0].specifiers[0].name.identifier = string(program.objects.currentClassName);
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// tmp[0].declarators[0].rhs.typeName.specifiers[0].name.identifier = string(program.objects.currentClassName);
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s.compoundS.expression = treeCopy(fusion(tmp, s.compoundS.expression));
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program.objects.function = "none";
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return s;
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}
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if (program.objects.function == "constructor") {
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rawDeclaration = (`declaration class = findClass("foo");
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);
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rawDeclaration.declarators[0].rhs.paramTypeL[0].text[0].value = "\"" + string(program.objects.currentClassName) + "\"";
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size = length(s.compoundS.expression);
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lhs = treeCopy(s.compoundS.expression[size-2].expression.lhs);
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lhs.rhs = rawDeclaration.declarators[0].lhs;
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rawDeclaration.declarators[0].lhs = lhs;
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s.compoundS.expression[size] = s.compoundS.expression[size-1];
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s.compoundS.expression[size-1] = rawDeclaration;
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program.objects.function = "none";
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return s;
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}
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if (s.declarators != null && s.declarators.declarators != null && string(s.declarators.declarators.identifier) == "main") {
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rawSelector = (`declaration int _selector_ = findSelector("foo");
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);
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rawClass = (`declaration int _class_ = findClass("foo");
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);
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t = {};
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for (i in program.objects.methods) {
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rawSelector.declarators[0].lhs.identifier = "_selector_" + string(program.objects.methods[i]);
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rawSelector.declarators[0].rhs.paramTypeL[0].text[0].value = "\"" + string(program.objects.methods[i]) + "\"";
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append(t, treeCopy(rawSelector));
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}
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classKeys = keys(program.objects.class);
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for (i in classKeys) {
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rawClass.declarators[0].lhs.identifier = "_class_" + string(classKeys[i]);
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rawClass.declarators[0].rhs.paramTypeL[0].text[0].value = "\"" + string(classKeys[i]) + "\"";
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append(t, treeCopy(rawClass));
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}
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rawAddMethod = (`declaration addMethod(_class_, _selector_, foo);
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);
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for (i in program.objects.class) {
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for (k in program.objects.class[i]) {
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newObject = treeCopy(rawAddMethod);
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newObject.declarators[0].paramTypeL[0].identifier = string(rawAddMethod.declarators[0].paramTypeL[0].identifier) + string(i);
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newObject.declarators[0].paramTypeL[2].identifier = string(rawAddMethod.declarators[0].paramTypeL[2].identifier) + string(program.objects.class[i][k]);
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newObject.declarators[0].paramTypeL[4].identifier = string(i) + "_" + string(program.objects.class[i][k]);
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append(t, treeCopy(newObject));
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}
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}
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s.compoundS.expression = fusion(t, s.compoundS.expression);
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return s;
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}
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s;
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}
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nil;
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}
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