project11 - complete

2025-12-11 22:54:43 -05:00 · 2025-11-21 10:24:48 -05:00
parent 30d7936c6e
commit 912b16855a
10 changed files with 2290 additions and 0 deletions
--- a/11/yacc-compiler/jack.l
+++ b/11/yacc-compiler/jack.l
@@ -0,0 +1,97 @@
+%{
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include "y.tab.h"
+
+extern int yylineno;
+int comment_depth = 0;
+%}
+
+%x COMMENT
+%x LINE_COMMENT
+
+%%
+
+"/*"                { BEGIN(COMMENT); comment_depth = 1; }
+<COMMENT>"/*"       { comment_depth++; }
+<COMMENT>"*/"       { comment_depth--; if (comment_depth == 0) BEGIN(INITIAL); }
+<COMMENT>.          { /* ignore comment content */ }
+<COMMENT>\n         { yylineno++; }
+
+"//"                { BEGIN(LINE_COMMENT); }
+<LINE_COMMENT>\n    { BEGIN(INITIAL); yylineno++; }
+<LINE_COMMENT>.     { /* ignore comment content */ }
+
+[ \t\r]+            { /* ignore whitespace */ }
+\n                  { yylineno++; }
+
+"class"             { return CLASS; }
+"constructor"       { return CONSTRUCTOR; }
+"function"          { return FUNCTION; }
+"method"            { return METHOD; }
+"field"             { return FIELD; }
+"static"            { return STATIC; }
+"var"               { return VAR; }
+"int"               { return INT; }
+"char"              { return CHAR; }
+"boolean"           { return BOOLEAN; }
+"void"              { return VOID; }
+"true"              { return TRUE; }
+"false"             { return FALSE; }
+"null"              { return NULL_TOKEN; }
+"this"              { return THIS; }
+"let"               { return LET; }
+"do"                { return DO; }
+"if"                { return IF; }
+"else"              { return ELSE; }
+"while"             { return WHILE; }
+"return"            { return RETURN; }
+
+[a-zA-Z_][a-zA-Z0-9_]*  {
+    yylval.string = strdup(yytext);
+    return IDENTIFIER;
+}
+
+[0-9]+              {
+    yylval.integer = atoi(yytext);
+    return INTEGER_CONSTANT;
+}
+
+\"([^"\\]|\\.)*\"   {
+    /* Remove quotes from string */
+    yylval.string = strdup(yytext + 1);
+    yylval.string[strlen(yylval.string) - 1] = '\0';
+    return STRING_CONSTANT;
+}
+
+"{"                 { return LBRACE; }
+"}"                 { return RBRACE; }
+"("                 { return LPAREN; }
+")"                 { return RPAREN; }
+"["                 { return LBRACKET; }
+"]"                 { return RBRACKET; }
+"."                 { return DOT; }
+","                 { return COMMA; }
+";"                 { return SEMICOLON; }
+"+"                 { return PLUS; }
+"-"                 { return MINUS; }
+"*"                 { return MULTIPLY; }
+"/"                 { return DIVIDE; }
+"&"                 { return AND; }
+"|"                 { return OR; }
+"<"                 { return LT; }
+">"                 { return GT; }
+"="                 { return EQ; }
+"~"                 { return NOT; }
+
+.                   {
+    fprintf(stderr, "Unexpected character: %s at line %d\n", yytext, yylineno);
+    return yytext[0];
+}
+
+%%
+
+int yywrap() {
+    return 1;
+}