git » unicorn-sparkle-basic.git » commit 3225fca

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..755862a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+bbasic.tab.c
+bbasic.tab.h
+bbasic
+*.o
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..e0077a0
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,29 @@
+CC=gcc
+CFLAGS=-Wall -g
+LEX=flex
+YACC=bison
+YFLAGS=-d
+
+all: bbasic
+
+bbasic: lex.yy.o bbasic.tab.o main.o
+	$(CC) $(CFLAGS) -o bbasic lex.yy.o bbasic.tab.o main.o -lfl
+
+main.o: main.c
+	$(CC) $(CFLAGS) -c main.c
+
+lex.yy.o: lex.yy.c bbasic.tab.h
+	$(CC) $(CFLAGS) -c lex.yy.c
+
+bbasic.tab.o: bbasic.tab.c
+	$(CC) $(CFLAGS) -c bbasic.tab.c
+
+lex.yy.c: bbasic.l
+	$(LEX) bbasic.l
+
+bbasic.tab.c bbasic.tab.h: bbasic.y
+	$(YACC) $(YFLAGS) bbasic.y
+
+clean:
+	rm -f bbasic lex.yy.c bbasic.tab.c bbasic.tab.h *.o
+
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..48fd101
--- /dev/null
+++ b/README.md
@@ -0,0 +1,3 @@
+# Buckaroo Basic
+
+WIP
diff --git a/bbasic.l b/bbasic.l
new file mode 100644
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+++ b/bbasic.l
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+%{
+#include "bbasic.tab.h"
+%}
+
+%%
+
+[ \t]+              ; /* Ignore whitespaces */
+\n                  return EOL;
+"print"             return PRINT;
+"if"                return IF;
+"then"              return THEN;
+"goto"              return GOTO;
+"="                 return EQUALS;
+[0-9]+              { yylval.num = atoi(yytext); return NUMBER; }
+[a-zA-Z][a-zA-Z0-9]* { yylval.str = strdup(yytext); return IDENTIFIER; }
+.                   return *yytext;
+
+%%
diff --git a/bbasic.y b/bbasic.y
new file mode 100644
index 0000000..f2350db
--- /dev/null
+++ b/bbasic.y
@@ -0,0 +1,47 @@
+%{
+#include <stdio.h>
+#include <stdlib.h>
+extern int yylex();
+extern int yyparse();
+extern FILE *yyin;
+
+void yyerror(const char *s) {
+    fprintf(stderr, "Error: %s\n", s);
+}
+%}
+
+%union {
+    int num;
+    char *str;
+}
+
+%token <num> NUMBER
+%token <str> IDENTIFIER
+%token EOL PRINT IF THEN GOTO EQUALS
+
+%left '+' '-'
+%left '*' '/'
+
+%%
+program:
+    | program line
+    ;
+
+line:
+    NUMBER statement EOL
+    ;
+
+statement:
+    PRINT expression
+    | IF expression THEN statement
+    ;
+
+expression:
+    IDENTIFIER
+    | NUMBER
+    | expression '+' expression
+    | expression '-' expression
+    | expression '*' expression
+    | expression '/' expression
+    ;
+%%
diff --git a/main.c b/main.c
new file mode 100644
index 0000000..5acd07f
--- /dev/null
+++ b/main.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include "bbasic.tab.h"
+
+extern int yyparse();
+
+int main() {
+    printf("Welcome to Buckaroo Basic!\n");
+    yyparse();  // Start parsing
+    return 0;
+}