AddRegexFlags add the necessary flags to regex to make it work like other AWKs (exported so we can also use this in the interpreter).

Compile compiles an AST (parsed program) into virtual machine instructions.

Binary operators.

arrayIndex.

arrayIndex.

arrayIndex.

arrayIndex.

Assign a field, variable, or array item.

index.

index.

index.

augOp arrayIndex.

augOp arrayIndex.

augOp.

augOp index.

augOp index.

augOp index.

builtinOp.

arrayScope arrayIndex.

funcIndex numArgs.

arrayScope arrayIndex.

arrayScope arrayIndex.

numArgs.

funcIndex numArrayArgs [arrayScope1 arrayIndex1 ...].

num.

arrayScope arrayIndex.

arrayScope arrayIndex.

Fetch a field, variable, or array item.

strIndex.

index.

varScope varIndex arrayScope arrayIndex offset.

redirect.

redirect arrayScope arrayIndex.

redirect.

redirect index.

redirect index.

redirect index.

index.

amount arrayIndex.

amount arrayIndex.

amount.

amount index.

amount index.

amount index.

num.

arrayIndex.

arrayIndex.

offset.

offset.

offset.

offset.

offset.

offset.

offset.

offset.

offset.

index.

Unary operators.

numNulls.

numIndex.

numArgs redirect.

numArgs redirect.

regexIndex.

index.

strIndex.

Action holds a compiled pattern-action block.

Function holds a compiled function.

Program holds an entire compiled program.

AugOp represents an augmented assignment operation.

BuiltinOp represents a builtin function call.

Opcode represents a single virtual machine instruction (or argument).