NAME

Tcl Compiler

DESCRIPTION

This is the compiler portion of ParTcl.

FUNCTIONS

(int register_num, string pir_code) = compile(int register_num, string tcl_code)

Parses the Tcl code and returns generated PIR code.

Argument register_num is the first register number that is available for use by the generated PIR.

Return register_num is the register number that contains the result of this code.

(int register_num, str code) = compile_dispatch(int register_num, pmc thing)

Given an object, call its compile method, or, if it's constant, generate code on its behalf. Returns PIR code.

Argument register_num is the first register number that is available for use by the generated PIR.

Return register_num is the register number that contains the result of this code.

(pmc invokable) = pir_compiler(int register_num, string PIR) =item (string code) = pir_compiler(int register_num, string PIR, 1)

A thin wrapper for the <compreg>'d PIR compiler. Given inline PIR code, wrap it in anonymous subroutine and return the fully qualified PIR.

If the third argument is present, don't compile the wrapper sub, just return the wrapped code.

Argument register_num is the first register number that is available for use by the generated PIR.

TclCompiler

A helper object for managing tcl compilation.

Methods

int add_code(string)

compile the given string as tcl code. Return the register that the result is stored in.

int add_expression(string)

compile the given string as an [expr]ession. Return the register that the result is stored in.

add_pir(string)

add the raw PIR to be executed.

defer_pir(string)

add the raw PIR to be added at the end. (For [proc], [exec], etc.)

set_result_register(int)

If this is set, the final result of the generated sub is this register.

int get_result_register()

__get_string()

should only be called at the end of the compile cycle. Generates a PIR string containing all the code (immediate and deferred).

execute()

Compile and execute the code associated with this compiler object.