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package token
import "core:fmt"
Token :: union {
Asterisk,
Bang,
Comma,
EOF,
Else,
Equal_Sign,
Equals,
False,
Forward_Slash,
Function,
Greater_Than,
Identifier,
If,
Illegal,
Integer,
Left_Brace,
Left_Parenthesis,
Less_Than,
Let,
Minus,
Not_Equals,
Plus,
Return,
Right_Brace,
Right_Parenthesis,
Semicolon,
True,
}
Asterisk :: struct {}
Bang :: struct {}
Comma :: struct {}
EOF :: struct {}
Else :: struct {}
Equal_Sign :: struct {}
Equals :: struct {}
False :: struct {}
Forward_Slash :: struct {}
Function :: struct {}
Greater_Than :: struct {}
Identifier :: struct {
literal: string,
}
If :: struct {}
Illegal :: struct {}
Integer :: struct {
literal: int,
}
Left_Brace :: struct {}
Left_Parenthesis :: struct {}
Less_Than :: struct {}
Let :: struct {}
Minus :: struct {}
Not_Equals :: struct {}
Plus :: struct {}
Return :: struct {}
Right_Brace :: struct {}
Right_Parenthesis :: struct {}
Semicolon :: struct {}
True :: struct {}
lookup_identifier :: proc(ident: string) -> Token {
switch ident {
case "fn":
return Function{}
case "let":
return Let{}
case "if":
return If{}
case "else":
return Else{}
case "true":
return True{}
case "false":
return False{}
case "return":
return Return{}
case:
return Identifier{ident}
}
}
literal :: proc(token: Token) -> (literal: string) {
switch t in token {
case Asterisk:
literal = "*"
case Bang:
literal = "!"
case Comma:
literal = ","
case EOF:
literal = "EOF"
case Else:
literal = "else"
case Equal_Sign:
literal = "="
case Equals:
literal = "=="
case False:
literal = "false"
case Forward_Slash:
literal = "/"
case Function:
literal = "fn"
case Greater_Than:
literal = ">"
case Identifier:
literal = t.literal
case If:
literal = "if"
case Illegal:
literal = "ILLEGAL"
case Integer:
literal = fmt.tprint(t.literal)
case Left_Brace:
literal = "{"
case Left_Parenthesis:
literal = "("
case Less_Than:
literal = "<"
case Let:
literal = "let"
case Minus:
literal = "-"
case Not_Equals:
literal = "!="
case Plus:
literal = "+"
case Return:
literal = "return"
case Right_Brace:
literal = "}"
case Right_Parenthesis:
literal = ")"
case Semicolon:
literal = ";"
case True:
literal = "true"
}
return literal
}
|
