Class ExprInstrGenerator

java.lang.Object

org.ek9lang.compiler.phase7.ExprInstrGenerator

final class ExprInstrGenerator
extends Object

Creates IR instructions for expressions.

This is the real backbone of processing and is very big! It is also recursive calling upon expression (sometimes directly and sometimes directly.
The ANTLR grammar follows:

   expression
     : expression op=(INC | DEC | BANG)
     | op=SUB expression
     | expression op=QUESTION
     | op=TOJSON expression
     | op=DOLLAR expression
     | op=PROMOTE expression
     | op=LENGTH OF? expression
     | op=PREFIX expression
     | op=SUFFIX expression
     | op=HASHCODE expression
     | op=ABS OF? expression
     | op=SQRT OF? expression
     | <assoc=right> left=expression coalescing=(CHECK | ELVIS) right=expression
     | primary
     | call
     | objectAccessExpression
     | list
     | dict
     | expression IS? neg=NOT? op=EMPTY
     | op=(NOT | TILDE) expression
     | left=expression op=CARET right=expression
     | left=expression op=(DIV | MUL | MOD | REM ) NL? right=expression
     | left=expression op=(ADD | SUB) NL? right=expression
     | left=expression op=(SHFTL | SHFTR) right=expression
     | left=expression op=(CMP | FUZ) NL? right=expression
     | left=expression op=(LE | GE | GT | LT) NL? right=expression
     | left=expression op=(EQUAL | NOTEQUAL | NOTEQUAL2) NL? right=expression
     | <assoc=right> left=expression coalescing_equality=(COALESCE_LE | COALESCE_GE | COALESCE_GT | COALESCE_LT) right=expression
     | left=expression neg=NOT? op=MATCHES right=expression
     | left=expression neg=NOT? op=CONTAINS right=expression
     | left=expression IS? neg=NOT? IN right=expression
     | left=expression op=(AND | XOR | OR) NL? right=expression
     | expression IS? neg=NOT? IN range
     | <assoc=right> control=expression LEFT_ARROW ternaryPart ternary=(COLON|ELSE) ternaryPart
     ;
 

Constructor Summary

Constructors

Constructor	Description
ExprInstrGenerator(IRContext context)

Method Summary

Modifier and Type	Method	Description
List<IRInstr>	apply(EK9Parser.ExpressionContext ctx, String resultVar, String scopeId)	Generate IR instructions for expression.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ExprInstrGenerator

ExprInstrGenerator(IRContext context)

Method Details

apply

public List<IRInstr> apply(EK9Parser.ExpressionContext ctx,
 String resultVar,
 String scopeId)

Generate IR instructions for expression.