Minimal Go Compiler

Build and Run

How to Run with Go:

go run compiler.go optimizer.go tac.go mips.go -file input.josh

How to Build:

go build compiler.go optimizer.go tac.go mips.go

How to Run Binary:

./compiler -file input.josh

Make sure to pass in the file with the -file flag

Types

The compiler supports the following types:

• string
• bool
• int
• float
• char
• global - used to allow access from all subscopes

Initialize

Syntax

[type] [name]
[type] [name] = [value]
global [type] [name]

Functions

Syntax

func [name]([type] [param],...) [return type, omit if void] {
    [body]
    [return, omit if void] [returned value, omit if void]
}

Logic

Syntax

if ([value] [operator] [value]) {
    [body]
} else {
    [body]
}

Arithmetic

Supported Operators

• +
• -
• /
• *
• % Syntax

[value] [operator] [value]

Loops

For loops are the only type of loop supported. Syntax

for (int i = 0; i < [value]; i = i + [increment]) {
    [body]
}

Printing

The built-in function used for printing is write(x)

The write method takes any type as an arg and will cause a MIPS syscall to print