mirror of https://github.com/vitalif/openscad
226 lines
7.2 KiB
C++
226 lines
7.2 KiB
C++
#include "modcontext.h"
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#include "module.h"
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#include "expression.h"
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#include "function.h"
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#include "printutils.h"
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#include "builtin.h"
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#include "ModuleCache.h"
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#include <boost/foreach.hpp>
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ModuleContext::ModuleContext(const Context *parent, const EvalContext *evalctx)
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: Context(parent), functions_p(NULL), modules_p(NULL), evalctx(evalctx)
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{
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}
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ModuleContext::~ModuleContext()
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{
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}
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// Experimental code. See issue #399
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#if 0
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void ModuleContext::evaluateAssignments(const AssignmentList &assignments)
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{
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// First, assign all simple variables
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std::list<std::string> undefined_vars;
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BOOST_FOREACH(const Assignment &ass, assignments) {
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Value tmpval = ass.second->evaluate(this);
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if (tmpval.isUndefined()) undefined_vars.push_back(ass.first);
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else this->set_variable(ass.first, tmpval);
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}
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// Variables which couldn't be evaluated in the first pass is attempted again,
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// to allow for initialization out of order
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boost::unordered_map<std::string, Expression *> tmpass;
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BOOST_FOREACH (const Assignment &ass, assignments) {
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tmpass[ass.first] = ass.second;
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}
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bool changed = true;
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while (changed) {
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changed = false;
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std::list<std::string>::iterator iter = undefined_vars.begin();
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while (iter != undefined_vars.end()) {
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std::list<std::string>::iterator curr = iter++;
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boost::unordered_map<std::string, Expression *>::iterator found = tmpass.find(*curr);
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if (found != tmpass.end()) {
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const Expression *expr = found->second;
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Value tmpval = expr->evaluate(this);
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// FIXME: it's not enough to check for undefined;
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// we need to check for any undefined variable in the subexpression
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// For now, ignore this and revisit the validity and order of variable
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// assignments later
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if (!tmpval.isUndefined()) {
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changed = true;
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this->set_variable(*curr, tmpval);
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undefined_vars.erase(curr);
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}
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}
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}
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}
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}
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#endif
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void ModuleContext::initializeModule(const class Module &module)
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{
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this->setVariables(module.definition_arguments, evalctx);
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// FIXME: Don't access module members directly
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this->functions_p = &module.scope.functions;
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this->modules_p = &module.scope.modules;
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BOOST_FOREACH(const Assignment &ass, module.scope.assignments) {
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this->set_variable(ass.first, ass.second->evaluate(this));
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}
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// Experimental code. See issue #399
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// evaluateAssignments(module.scope.assignments);
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}
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/*!
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Only used to initialize builtins for the top-level root context
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*/
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void ModuleContext::registerBuiltin()
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{
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const LocalScope &scope = Builtins::instance()->getGlobalScope();
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// FIXME: Don't access module members directly
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this->functions_p = &scope.functions;
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this->modules_p = &scope.modules;
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BOOST_FOREACH(const Assignment &ass, scope.assignments) {
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this->set_variable(ass.first, ass.second->evaluate(this));
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}
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this->set_constant("PI",Value(M_PI));
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}
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const AbstractFunction *ModuleContext::findLocalFunction(const std::string &name) const
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{
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if (this->functions_p && this->functions_p->find(name) != this->functions_p->end()) {
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AbstractFunction *f = this->functions_p->find(name)->second;
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if (!f->is_enabled()) {
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PRINTB("WARNING: Experimental builtin function '%s' is not enabled.", name);
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return NULL;
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}
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return f;
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}
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return NULL;
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}
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const AbstractModule *ModuleContext::findLocalModule(const std::string &name) const
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{
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if (this->modules_p && this->modules_p->find(name) != this->modules_p->end()) {
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AbstractModule *m = this->modules_p->find(name)->second;
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if (!m->is_enabled()) {
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PRINTB("WARNING: Experimental builtin module '%s' is not enabled.", name);
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return NULL;
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}
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std::string replacement = Builtins::instance()->isDeprecated(name);
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if (!replacement.empty()) {
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PRINTB("DEPRECATED: The %s() module will be removed in future releases. Use %s() instead.", name % replacement);
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}
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return m;
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}
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return NULL;
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}
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Value ModuleContext::evaluate_function(const std::string &name, const EvalContext *evalctx) const
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{
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const AbstractFunction *foundf = findLocalFunction(name);
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if (foundf) return foundf->evaluate(this, evalctx);
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return Context::evaluate_function(name, evalctx);
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}
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AbstractNode *ModuleContext::instantiate_module(const ModuleInstantiation &inst, const EvalContext *evalctx) const
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{
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const AbstractModule *foundm = this->findLocalModule(inst.name());
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if (foundm) return foundm->instantiate(this, &inst, evalctx);
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return Context::instantiate_module(inst, evalctx);
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}
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#ifdef DEBUG
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void ModuleContext::dump(const AbstractModule *mod, const ModuleInstantiation *inst)
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{
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if (inst)
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PRINTB("ModuleContext %p (%p) for %s inst (%p) ", this % this->parent % inst->name() % inst);
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else
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PRINTB("ModuleContext: %p (%p)", this % this->parent);
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PRINTB(" document path: %s", this->document_path);
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if (mod) {
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const Module *m = dynamic_cast<const Module*>(mod);
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if (m) {
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PRINT(" module args:");
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BOOST_FOREACH(const Assignment &arg, m->definition_arguments) {
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PRINTB(" %s = %s", arg.first % variables[arg.first]);
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}
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}
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}
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typedef std::pair<std::string, Value> ValueMapType;
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PRINT(" vars:");
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BOOST_FOREACH(const ValueMapType &v, constants) {
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PRINTB(" %s = %s", v.first % v.second);
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}
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BOOST_FOREACH(const ValueMapType &v, variables) {
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PRINTB(" %s = %s", v.first % v.second);
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}
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BOOST_FOREACH(const ValueMapType &v, config_variables) {
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PRINTB(" %s = %s", v.first % v.second);
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}
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}
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#endif
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FileContext::FileContext(const class FileModule &module, const Context *parent)
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: ModuleContext(parent), usedlibs(module.usedlibs)
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{
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if (!module.modulePath().empty()) this->document_path = module.modulePath();
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}
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Value FileContext::evaluate_function(const std::string &name, const EvalContext *evalctx) const
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{
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const AbstractFunction *foundf = findLocalFunction(name);
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if (foundf) return foundf->evaluate(this, evalctx);
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BOOST_FOREACH(const FileModule::ModuleContainer::value_type &m, this->usedlibs) {
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// usedmod is NULL if the library wasn't be compiled (error or file-not-found)
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FileModule *usedmod = ModuleCache::instance()->lookup(m);
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if (usedmod &&
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usedmod->scope.functions.find(name) != usedmod->scope.functions.end()) {
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FileContext ctx(*usedmod, this->parent);
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ctx.initializeModule(*usedmod);
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// FIXME: Set document path
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#if 0 && DEBUG
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PRINTB("New lib Context for %s func:", name);
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ctx.dump(NULL, NULL);
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#endif
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return usedmod->scope.functions[name]->evaluate(&ctx, evalctx);
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}
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}
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return ModuleContext::evaluate_function(name, evalctx);
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}
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AbstractNode *FileContext::instantiate_module(const ModuleInstantiation &inst, const EvalContext *evalctx) const
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{
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const AbstractModule *foundm = this->findLocalModule(inst.name());
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if (foundm) return foundm->instantiate(this, &inst, evalctx);
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BOOST_FOREACH(const FileModule::ModuleContainer::value_type &m, this->usedlibs) {
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FileModule *usedmod = ModuleCache::instance()->lookup(m);
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// usedmod is NULL if the library wasn't be compiled (error or file-not-found)
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if (usedmod &&
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usedmod->scope.modules.find(inst.name()) != usedmod->scope.modules.end()) {
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FileContext ctx(*usedmod, this->parent);
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ctx.initializeModule(*usedmod);
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// FIXME: Set document path
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#if 0 && DEBUG
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PRINT("New file Context:");
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ctx.dump(NULL, &inst);
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#endif
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return usedmod->scope.modules[inst.name()]->instantiate(&ctx, &inst, evalctx);
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}
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}
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return ModuleContext::instantiate_module(inst, evalctx);
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}
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