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syntax.txt
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program:
program: func_def program
func_def: ident "(" func_def_args ")" block
func_def_args:
func_def_args: var func_def_arglist
func_def_arglist:
func_def_arglist: "," var func_def_arglist
stmt: block
stmt: control
stmt: assign ";"
stmt: return assign ";"
block: "{" block_items "}"
block_items:
block_items: stmt block_items
control: "if" "(" assign ")" stmt
control: "while" "(" assign ")" stmt
control: "for" "(" assign ";" assign ";" assign ")" stmt
assign: equality
assign: equality "=" assign
equality: relational
equality: equality "==" relational
equality: equality "!=" relational
relational: add
relational: relational "<" add
relational: relational "<=" add
relational: relational ">" add
relational: relational ">=" add
add: mul
add: add "+" mul
add: add "-" mul
mul: unary
mul: mul "*" unary
mul: mul "/" unary
unary: "+" term
unary: "+" term
unary: term
term: func_call
term: num
term: var
term: "(" assign ")"
func_call: ident "(" func_call_args ")"
func_call_args:
func_call_args: assign func_call_arglist
func_call_arglist:
func_call_arglist: "," assign func_call_arglist
var: ident
program:
program: func_def program
func_def: ident "(" func_def_args ")" block
func_def_args:
func_def_args: var func_def_arglist
func_def_arglist:
func_def_arglist: "," var func_def_arglist
stmt: block
stmt: control
stmt: assign ";"
stmt: return assign ";"
block: "{" block_items "}"
block_items:
block_items: stmt block_items
control: "if" "(" assign ")" stmt
control: "while" "(" assign ")" stmt
control: "for" "(" assign ";" assign ";" assign ")" stmt
assign: equality
assign: equality "=" assign
equality: relational equalityx
equalityx:
equalityx: "==" relational equalityx
equalityx: "!=" relational equalityx
relational: add relationalx
relationalx: "<" add relationalx
relationalx: "<=" add relationalx
relationalx: ">" add relationalx
relationalx: ">=" add relationalx
add: mul addx
addx:
addx: "+" mul addx
addx: "-" mul addx
mul: unary mulx
mulx:
mulx: "*" unary mulx
mulx: "/" unary mulx
unary: "+" term
unary: "+" term
unary: term
term: func_call
term: num
term: var
term: "(" assign ")"
func_call: ident "(" func_call_args ")"
func_call_args:
func_call_args: assign func_call_arglist
func_call_arglist:
func_call_arglist: "," assign func_call_arglist
var: ident