A method of assembling executable instructions includes mapping a first file scope symbol table for a first source code file being assembled, the first file scope symbol table including a reference for each symbol declaration within each corresponding section of code, determining nested sections of code included in the first source code file, mapping a nested scope symbol table for each determined nested section of code, with each nested scope symbol table including a reference for each symbol declaration within each corresponding section of code and assembling a portion of an executable instruction that corresponds to a symbol reference included in a coded instruction, the portion of the executable instruction based on a symbol mapped by one of the symbol tables.