Hi, Antlr fellows:
I wrote a simple parser and a weak runtime to make a prototype of our DSL. I
followed the de-facto definition steps:
1. Define a lex grammar to describe tokens.
2. Define a parser grammar to describe syntax and build an AST.
3. Define a tree grammar to genereate DSL source code via StringTemplate
which includes my hand-written execution code as runtime.
Now I want to run this DSL code in Eclipse directly. So I must let DSL
support debugging. I must embbed a hook function in every start of a
statement. I named this function 'breakpoint', it need a line number as
argument.
For example, there's a "x=1" statement in my DSL where AST is ^(ASSIGN, x,
1) . I insert a function like below:
assignStmt @init{
breakpoint(Problem: how to get line number here?);
} : ^(ASSIGN, ID, INT) {
.....//Omitted
}
I don't know how to get line number at the start of a statement, further, I
doubt whether this method is correct.
Thank for you help!
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