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#include "ast.h"
using namespace std;
static int indent_level_index=ios_base::xalloc();
namespace std{
string to_string(Expression::Type type){
switch(type){
case Expression::Type::binop: return "binop";
case Expression::Type::unop: return "unop";
case Expression::Type::call: return "call";
case Expression::Type::dive: return "dive";
case Expression::Type::number: return "number";
case Expression::Type::string: return "string";
case Expression::Type::scope: return "scope";
default: return to_string((int)type);
}
}
string to_string(Statement::Type type){
switch(type){
case Statement::Type::create: return "create";
case Statement::Type::assign: return "assign";
case Statement::Type::expression: return "expression";
default: return to_string((int)type);
}
}
}
Site::Site():lnum(-1),linex(-1){}
Site::Site(const string &filename,i64 lnum,i64 linex)
:filename(filename),lnum(lnum),linex(linex){}
Site Site::addX(i64 dx){
return Site(filename,lnum,linex+dx);
}
ostream& operator<<(ostream &os,Site site){
return os<<site.filename<<':'<<site.lnum<<':'<<site.linex;
}
Scope::Scope():type(Type::direct){}
Scope::Scope(Type type,const StatementList &body,const vector<Expression> &args)
:type(type),body(body),args(args){}
/*Scope::Scope(Type type,const StatementList &body,const vector<Name> &nameargs)
:type(type),body(body){
for(const Name &n : nameargs){
args.emplace_back(Expression::Type::call,n,vector<Expression>());
}
}*/
string indent(int amount){
return string(amount*4,' ');
}
ostream& operator<<(ostream &os,const Scope &scope){
switch(scope.type){
case Scope::Type::direct: break;
case Scope::Type::lazy: os<<'?'; break;
case Scope::Type::function: os<<"??"; break;
}
if(scope.args.size()!=0){
os<<'(';
bool first=true;
for(const Expression &ex : scope.args){
if(!first)os<<", ";
else first=false;
os<<ex;
}
os<<')';
}
os<<"{\n";
os.iword(indent_level_index)++;
int level=os.iword(indent_level_index);
os<<scope.body;
os.iword(indent_level_index)--;
return os<<'\n'<<indent(level)<<'}';
}
Expression::Expression(Type type,const Name &name,const vector<Expression> &args)
:type(type),name(name),args(args){
if(type!=Type::binop&&type!=Type::call){
throw runtime_error("Expression(type,name,args) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,const Name &name,const Expression &arg)
:type(type),name(name),args({arg}){
if(type!=Type::unop){
throw runtime_error("Expression(type,name,arg) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,const Name &name,const vector<Expression> &args,const Scope &scope)
:type(type),name(name),args(args),scope(scope){
if(type!=Type::dive){
throw runtime_error("Expression(type,name,args,scope) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,double numval)
:type(type),numval(numval){
if(type!=Type::number){
throw runtime_error("Expression(type,numval) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,const string &strval)
:type(type),strval(strval){
if(type!=Type::string){
throw runtime_error("Expression(type,strval) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,const Scope &scope)
:type(type),scope(scope){
if(type!=Type::scope){
throw runtime_error("Expression(type,scope) called with invalid type "+to_string(type));
}
}
Expression::Expression(Type type,const vector<Expression> &args)
:type(type),args(args){
if(type!=Type::cond){
throw runtime_error("Expression(type,args) called with invalid type "+to_string(type));
}
}
ostream& operator<<(ostream &os,const Expression &expr){
switch(expr.type){
case Expression::Type::binop:
return os<<'('<<expr.args[0]<<' '<<expr.name<<' '<<expr.args[1]<<')';
case Expression::Type::unop:
return os<<expr.name<<expr.args[0];
case Expression::Type::call:
case Expression::Type::dive:
os<<expr.name;
if(expr.args.size()!=0){
os<<'(';
bool first=true;
for(const auto &a : expr.args){
if(!first)os<<", ";
else first=false;
os<<a;
}
os<<')';
}
if(expr.type==Expression::Type::dive){
os<<expr.scope;
}
return os;
case Expression::Type::number:
return os<<expr.numval;
case Expression::Type::string:
return os<<expr.strval;
case Expression::Type::scope:
throw runtime_error("operator<< on Expression:scope not implemented");
case Expression::Type::cond:
return os<<"if "<<expr.args[0]<<" then "<<expr.args[1]<<" else "<<expr.args[2];
}
}
Statement::Statement(Type type,const Name &dstvar,const Expression &expr)
:type(type),dstvar(dstvar),expr(expr){
if(type!=Type::create&&type!=Type::assign){
throw runtime_error("Statement(type,dstvar,expr) called with invalid type "+to_string(type));
}
}
Statement::Statement(Type type,const Expression &expr)
:type(type),expr(expr){
if(type!=Type::expression){
throw runtime_error("Statement(type,expr) called with invalid type "+to_string(type));
}
}
ostream& operator<<(ostream &os,const Statement &st){
switch(st.type){
case Statement::Type::create:
return os<<st.dstvar<<" := "<<st.expr;
case Statement::Type::assign:
return os<<st.dstvar<<" = "<<st.expr;
case Statement::Type::expression:
return os<<st.expr;
}
}
ostream& operator<<(ostream &os,const StatementList &stl){
bool first=true;
for(const Statement &st : stl){
if(!first)os<<'\n'<<indent(os.iword(indent_level_index));
else first=false;
os<<st;
}
return os;
}
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