void VarNomination(ref Scope scope, out MultiVariableDeclaration mvd, bool decl)
{
VariableDeclaration varDecl;
List<VariableDeclaration> vars = new List<VariableDeclaration>();
if (la.kind == 1) {
SingleVarNomination(ref scope, out varDecl, decl);
vars.Add(varDecl);
} else if (la.kind == 13) {
Get();
SingleVarNomination(ref scope, out varDecl, decl);
vars.Add(varDecl);
while (la.kind == 11) {
Get();
SingleVarNomination(ref scope, out varDecl, decl);
vars.Add(varDecl);
}
Expect(14);
} else SynErr(37);
mvd = new MultiVariableDeclaration(vars, null);
}
void VarAssignment(ref Scope scope, out IStatement stmt)
{
MultiVariableDeclaration mvd;
IExpression expr = null;
IExpression rhs = null;
VariableDeclaration vd = null;
stmt = null;
if (la.kind == 21) {
Get();
VarNomination(ref scope, out mvd, true);
Initializer(scope, out expr);
stmt = new MultiVariableDeclaration(mvd.Declarations, expr);
} else if (la.kind == 1) {
SingleVarNomination(ref scope, out vd, false);
if (la.kind == 20) {
Initializer(scope, out expr);
stmt = new MultiVariableDeclaration(new List<VariableDeclaration>(new VariableDeclaration[]{ vd }), expr);
} else if (StartOf(1)) {
Expression(scope, out rhs);
stmt = new FunctionCall(vd, rhs);
} else SynErr(41);
} else if (la.kind == 1 || la.kind == 13) {
VarNomination(ref scope, out mvd, false);
Initializer(scope, out expr);
stmt = new MultiVariableDeclaration(mvd.Declarations, expr);
} else SynErr(42);
}
void StillPrimary(Scope scope, out IExpression expr, VarList vl)
{
IType type = new UnknownType();
string name = "";
expr = null;
IExpression rhs;
if (la.kind == 1) {
Get();
name = t.val;
if (la.kind == 14) {
Get();
if (la.kind == 8) {
VariableDeclaration newestParam = new VariableDeclaration(name, type);
vl.Add(newestParam);
MultiVariableDeclaration parmDecl = new MultiVariableDeclaration(vl, null);
FunctionReturnDefinition(scope, out expr, parmDecl);
}
if (StartOf(1)) {
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
}
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
} else if (la.kind == 7) {
Get();
TypeIdentifier(scope, out type);
VariableDeclaration newestParam = new VariableDeclaration(name, type);
vl.Add(newestParam);
MultiVariableDeclaration parmDecl = new MultiVariableDeclaration(vl, null);
if (la.kind == 8) {
FunctionReturnDefinition(scope, out expr, parmDecl);
if (la.kind == 14) {
Get();
if (StartOf(1)) {
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
}
} else if (StartOf(1)) {
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
if (la.kind == 14) {
Get();
} else if (la.kind == 11) {
ExpressionList el = new ExpressionList();
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
el.Add(expr);
Get();
Secondary(scope, el, out expr);
} else SynErr(29);
} else if (la.kind == 11) {
ExpressionList el = new ExpressionList();
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
el.Add(expr);
Get();
Secondary(scope, el, out expr);
} else SynErr(30);
} else if (la.kind == 14) {
Get();
FunctionReturnDefinition(scope, out expr, parmDecl);
if (StartOf(1)) {
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
}
if (la.kind == 11) {
ExpressionList el = new ExpressionList();
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
el.Add(expr);
Get();
Secondary(scope, el, out expr);
}
} else if (la.kind == 11) {
VariableDeclaration vd;
NextNomination(ref scope, out vd);
FunctionReturnDefinition(scope, out expr, parmDecl);
if (StartOf(1)) {
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
}
} else SynErr(31);
} else if (la.kind == 11) {
Get();
vl.Add(new VariableDeclaration(name, type));
StillPrimary(scope, out expr, vl);
} else if (la.kind == 8) {
VariableDeclaration newestParam = new VariableDeclaration(name, type);
vl.Add(newestParam);
MultiVariableDeclaration parmDecl = new MultiVariableDeclaration(vl, null);
FunctionReturnDefinition(scope, out expr, parmDecl);
if (la.kind == 14) {
Get();
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
} else if (StartOf(3)) {
if (la.kind == 11) {
Get();
}
ExpressionList el = new ExpressionList();
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
el.Add(expr);
Secondary(scope, el, out expr);
} else SynErr(32);
} else SynErr(33);
} else if (la.kind == 3 || la.kind == 10) {
if (la.kind == 3) {
IntegerLiteral(scope, out expr);
} else {
ArrayLiteral(scope, out expr);
}
ExpressionList el = new ExpressionList();
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
el.Add(expr);
if (la.kind == 11) {
Get();
Secondary(scope, el, out expr);
}
} else SynErr(34);
}
void Primary(Scope scope, out IExpression expr)
{
IType type = new UnknownType();
string name = "";
expr = null;
IExpression rhs;
if (la.kind == 1) {
Get();
name = t.val;
if (la.kind == 7 || la.kind == 8) {
if (la.kind == 7) {
Get();
TypeIdentifier(scope, out type);
VariableDeclaration vd = new VariableDeclaration(name, type);
MultiVariableDeclaration parmDecl = new MultiVariableDeclaration(new List<VariableDeclaration>(new VariableDeclaration[] {vd}), null);
FunctionReturnDefinition(scope, out expr, parmDecl);
} else {
VariableDeclaration vd = new VariableDeclaration(name, type);
MultiVariableDeclaration parmDecl = new MultiVariableDeclaration(new List<VariableDeclaration>(new VariableDeclaration[] {vd}), null);
FunctionReturnDefinition(scope, out expr, parmDecl);
}
}
if (StartOf(1)) {
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
Expression(scope, out rhs);
expr = new FunctionCall(expr, rhs);
}
expr = expr ?? (IExpression)scope.GetDeclarationFor(name);
} else if (la.kind == 13) {
Get();
VarList vl = new VarList();
if (la.kind == 1 || la.kind == 3 || la.kind == 10) {
StillPrimary(scope, out expr, vl);
} else if (la.kind == 14) {
Get();
} else SynErr(27);
} else SynErr(28);
}
void FunctionReturnDefinition(Scope scope, out IExpression expr, MultiVariableDeclaration parmDecl)
{
MultiVariableDeclaration retDecl;
Scope funcScope = new Scope(scope);
StatementList stmts = new StatementList();
Expect(8);
VariableDeclaration.Scopify(ref funcScope, parmDecl.Declarations);
VarNomination(ref funcScope, out retDecl, true);
Expect(15);
while (StartOf(2)) {
Statement(ref funcScope, stmts);
}
Expect(16);
expr = new FunctionLiteral(retDecl, parmDecl, stmts);
}
public FunctionLiteral(MultiVariableDeclaration returnValue, MultiVariableDeclaration parameter, List<IStatement> statements)
{
this.Type = new FunctionType(parameter.Type, returnValue.Type);
this.Statements = statements;
this.Parameter = parameter;
this.ReturnValue = returnValue;
}