F2 n r rn regexp implementation
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aljazbrodar.
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30c2693812
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2 changed files with 197 additions and 49 deletions
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@ -19,8 +19,14 @@ arithr START 0 .komentar1
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MULR T, A
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STA prod
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SUBR A, X
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SHIFTR A, 10
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SHIFTL X, #101
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LA DIVR S, T . en komentar
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LDA ZERO
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ADDR S, A
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lab SHIFTR A, 5
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CLR SHIFTR L, 100 .komentar
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DIVR T, A
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STA quot
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FIX . s komentarjem
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@ -31,6 +37,12 @@ LOOP SUBR T, A .komentar5
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JGT LOOP
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JEQ LOOP
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STA mod
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Lab SVC #100
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lab CLEAR A
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SVC 10
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TIXR S
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test SVC @300 . se en komentar
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LA TIXR T . komentar at the end
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HALT J HALT
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END arithr
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@ -7,19 +7,6 @@ import (
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"strings"
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)
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type ukaz interface {
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Temp()
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}
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func (f format_F1) Temp() {}
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type format_F1 struct {
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opcode int
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st_operandov int
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format int // F1 - 1, F2 - 2, F3 - 3, F4 - 4, SIC - 5
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velikost int //v bajtih
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}
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var ukazna_tabela = map[string]int{
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"ADD": 0x18,
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"ADDF": 0x58,
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@ -82,39 +69,77 @@ var ukazna_tabela = map[string]int{
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"WD": 0xDC,
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}
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// Pregledovalnik bere vhodne vrstice in jih razgradi na posamezne enote.
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// Razpoznane elemente okvalificira (oznaka / mnemonik / operand / komentar)
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// //<zbirniski stavek> ::== [<oznaka stavka>] <ločilo> <mnemonik> <ločilo> {<operand> <ločilo>} [<komentar>]
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type ukaz interface {
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Temp()
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}
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func (f format_F1) Temp() {}
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func (f format_F2_n) Temp() {}
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func (f format_F2_r) Temp() {}
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func (f format_F2_rn) Temp() {}
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var register string = `A|X|L|B|S|T|F`
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func main() {
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register = `A|X|L|B|S|T|F`
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type format_F1 struct {
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oznaka string
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opcode int
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format int // F1 - 1, F2 - 2, F3 - 3, F4 - 4, SIC - 5
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velikost int //v bajtih
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}
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inputbyte, err := os.ReadFile("input_invalid.asm")
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type format_F2_n struct {
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oznaka string
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opcode int
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format int
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velikost int
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n string
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}
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type format_F2_r struct {
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oznaka string
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opcode int
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format int
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velikost int
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r1 string
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}
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type format_F2_rn struct {
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oznaka string
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opcode int
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format int
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velikost int
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r1 string
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n string
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}
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type format_F2_rr struct {
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oznaka string
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opcode int
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format int
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velikost int
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r1 string
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r2 string
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}
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func remove_comments_and_empty_lines(el string) bool {
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match_pure_comment, err := regexp.MatchString(`(?m)^[\t ]*\..*$\n`, el)
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if err != nil {
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fmt.Println("Error reading input file: ", err)
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return
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fmt.Println("Error while matching string.")
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}
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input := string(inputbyte)
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pattern := regexp.MustCompile(`.*\n`)
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matches := pattern.FindAllString(input, -1)
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var AST []ukaz
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for _, el := range matches {
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match_pure_comment, err := regexp.MatchString(`(?m)^[\t ]*\..*$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_pure_comment {
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continue
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}
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match_empty, err := regexp.MatchString(`(?m)^[\t ]*$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_empty {
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continue
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}
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if match_pure_comment {
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return true
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}
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match_empty, err := regexp.MatchString(`(?m)^[\t ]*$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_empty {
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return true
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}
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return false
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}
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func check_F1(el string, AST *[]ukaz) bool {
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match_F1, err := regexp.MatchString(`(?m)^[A-Za-z_]*[\t ]+[A-Za-z]+[\t ]*(\..*)?$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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@ -122,18 +147,129 @@ func main() {
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if match_F1 {
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var nov_ukaz format_F1
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nov_ukaz.format = 1
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nov_ukaz.st_operandov = 0
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nov_ukaz.velikost = 1
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pattern := regexp.MustCompile(`[\t ]+[A-Za-z]+`)
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mnemonik := strings.Trim(pattern.FindString(el), " \n")
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mnemonik := strings.Trim(pattern.FindString(el), "\t ")
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nov_ukaz.opcode = ukazna_tabela[mnemonik];
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fmt.Println(mnemonik, nov_ukaz.opcode)
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AST = append(AST, nov_ukaz)
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//fmt.Println("F1: ", mnemonik, nov_ukaz.opcode)
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*AST = append(*AST, nov_ukaz)
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return true
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}
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return false
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}
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func check_F2_n(el string, AST *[]ukaz) bool {
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match_F2_n, err := regexp.MatchString(`(?m)^[A-Za-z_]*[\t ]+SVC ((#?|@?)[0-9]+)[\t ]*(\..*)?$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_F2_n {
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var nov_ukaz format_F2_n
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nov_ukaz.format = 2
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nov_ukaz.velikost = 2
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nov_ukaz.opcode = 10
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if !(strings.HasPrefix(el, " ") || strings.HasPrefix(el, "\t")) {
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re := regexp.MustCompile(`(?m)^[A-Z-a-z_]+`)
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nov_ukaz.oznaka = re.FindString(el)
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} else {
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nov_ukaz.oznaka = ""
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}
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re_par := regexp.MustCompile(`[\t ]+(#?|@?)[0-9]+`)
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nov_ukaz.n = strings.Trim(re_par.FindString(el), "\t ")
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//fmt.Println(nov_ukaz)
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*AST = append(*AST, nov_ukaz)
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return true
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}
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return false
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}
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func check_F2_r(el string, AST *[]ukaz) bool {
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match_F2_r, err := regexp.MatchString(`(?m)^[A-Za-z_]*[\t ]+[A-Za-z]+ (`+register+`)[\t ]*(\..*)?$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_F2_r {
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var nov_ukaz format_F2_r
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nov_ukaz.format = 2
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nov_ukaz.velikost = 2
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if !(strings.HasPrefix(el, " ") || strings.HasPrefix(el, "\t")) {
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re := regexp.MustCompile(`(?m)^[A-Z-a-z_]+`)
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nov_ukaz.oznaka = re.FindString(el)
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} else {
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nov_ukaz.oznaka = ""
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}
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re_op := regexp.MustCompile(`[\t ]+[A-Za-z]+`)
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nov_ukaz.opcode = ukazna_tabela[strings.Trim(re_op.FindString(el), "\t ")]
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re_par := regexp.MustCompile(`[\t ]+[A-Za-z]+ (`+register+`)`)
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nov_ukaz.r1 = strings.Split(strings.Trim(re_par.FindString(el), "\t \n"), " ")[1]
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//fmt.Println(nov_ukaz)
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*AST = append(*AST, nov_ukaz)
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return true
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}
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return false
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}
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func check_F2_rn(el string, AST *[]ukaz) bool {
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match_F2_rn, err := regexp.MatchString(`(?m)^[A-Za-z_]*[\t ]+[A-Za-z]+ (`+register+`), ((#?|@?)[0-9]+)[\t ]*(\..*)?$\n`, el)
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if err != nil {
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fmt.Println("Error while matching string.")
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}
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if match_F2_rn {
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var nov_ukaz format_F2_rn
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nov_ukaz.format = 2
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nov_ukaz.velikost = 2
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if !(strings.HasPrefix(el, " ") || strings.HasPrefix(el, "\t")) {
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re := regexp.MustCompile(`(?m)^[A-Z-a-z_]+`)
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nov_ukaz.oznaka = re.FindString(el)
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} else {
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nov_ukaz.oznaka = ""
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}
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re_op := regexp.MustCompile(`[\t ]+[A-Za-z]+`)
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nov_ukaz.opcode = ukazna_tabela[strings.Trim(re_op.FindString(el), "\t ")]
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re_par1 := regexp.MustCompile(`[\t ]+[A-Za-z]+ (`+register+`)`)
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nov_ukaz.r1 = strings.Split(strings.Trim(re_par1.FindString(el), "\t \n"), " ")[1]
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re_par2 := regexp.MustCompile(`(`+register+`), ((#?|@?)[0-9]+)`)
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nov_ukaz.n = strings.Split(re_par2.FindString(el), " ")[1]
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fmt.Println("F2_rn: ", nov_ukaz)
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*AST = append(*AST, nov_ukaz)
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return true
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}
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return false
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}
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// Pregledovalnik bere vhodne vrstice in jih razgradi na posamezne enote.
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// Razpoznane elemente okvalificira (oznaka / mnemonik / operand / komentar)
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// //<zbirniski stavek> ::== [<oznaka stavka>] <ločilo> <mnemonik> <ločilo> {<operand> <ločilo>} [<komentar>]
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//TODO ideja kaj ce bi prvo leve labele razresil/odstranil in potem regex za ukaze
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func main() {
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inputbyte, err := os.ReadFile("input_invalid.asm")
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if err != nil {
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fmt.Println("Error reading input file: ", err)
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return
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}
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input := string(inputbyte)
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pattern := regexp.MustCompile(`.*\n`)
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matches := pattern.FindAllString(input, -1)
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var AST []ukaz
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for _, el := range matches {
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if remove_comments_and_empty_lines(el) {
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continue
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}
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match_F2, err := regexp.MatchString(`^[A-Za-z_]*[\t ]+[A-Za-z_]+[\t ](((`+register+`), `+register+`)|(`+register+`))[\t ]*(\..*)?$\n`)
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if err != nil {
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fmt.Println("Error while matching string.")
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if check_F1(el, &AST) {
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continue
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}
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if check_F2_n(el, &AST) {
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continue
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}
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if check_F2_r(el, &AST) {
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continue;
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}
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if check_F2_rn(el, &AST) {
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continue;
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}
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//match_F2, err := regexp.MatchString(`(?m)^[A-Za-z_]*[\t ]+[A-Za-z_]+[\t ](((`+register+`), (`+register+`))|((`+register+`), (#?|@?)[0-9]+)|(`+register+`))[\t ]*(\..*)?$\n`, el)
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}
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}
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