Re: Compiling expressions

On Jan 3, 9:33 pm, James Harris <james.harri...@gmail.com> wrote:


A small correction was needed, as follows, as I had omitted the loop-
out condition.


> function value_parse(op1)
> v1 = value() //identifier or literal
> while true
> op2 = current token or dummy end of expression
> if lparen //parens of a function call or similar
> v1 = args_parse(op2)
> consume rparen
> else if prec(op2) > prec(op1)
> if incompatible(op1, op2)
> raise "incompatible - grouping parens needed"
> v1 = node(POSTFIX_OP, v1)
        else
            break
> return v1


James

Return to the comp.compilers page.
Search the comp.compilers archives again.