Parser result

[alfred42]

program
Statement*

Statement
{Statement*}
ifStatement
WhileStatement
DoWhileStatement
ForStatement
FieldDefineStatement
ArrayDefineStatement
AssignStatement
RestStatement

IfStatement
if(Expression) statement else statment

WhileStatment
while(Expression)statement

DoWhile
do Statment while(Expression)

ForStatement
for(Expression;Expression;Expression)Statement

FieldDefineStatement
Type Identify;

ArrayDefineStatement
Type Identify[];

AssignStatement
Identify=Expression;

Expression
(Expression)
Expression[Expression]
OPExpression
SingleOPExpression
ArrayGet
TrueExpression
FalseExpression
IdentifyExpression
ArrayExpression
IntValue
CharValue
LongValue
ParenthesesExpression

OPExpression
Expression op Expression

SingleOPExpression
op Expression

[alfred42]

Hi @cntimothy
I added two IO statments in AST

print
input

Detailed assemble code you can ask @cissy33 and BIG HUANG

[cntimothy]

Hi @alfred42
I add SingleOPExpression in AST to represent expressions have only one CaoZuoShu and in this case I delete NotExpression because it is contained in SingleOPExpression.

[cntimothy]

Hi, @alfred42 ,
In IfStatement, it should not be for(expression, expression, expression). The first part in bracket should be a statement. For Example "for (i = 0; i < 5; i++)". In this case, the third part is a SingleOPExpression. But in 'for(i = 0; i < 5; i = i + 2)' the third part is a statement. How could we do about it?

[cntimothy]

Hi, @alfred42 ,
I delete assignment in FieldDefineStatement for it can be devide into FieldDefineStatement and AssignStatement.