1 files changed, 136 insertions, 0 deletions
diff --git a/builtin.c b/builtin.c
new file mode 100644
index 0000000..89995a3
--- /dev/null
+++ b/builtin.c
@@ -0,0 +1,136 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+#include "parser.h"
+#include "eval.h"
+
+bool arithmetic(luckytree *tree, luckyval *out){
+	if (strcmp(tree->function, "+") == 0){
+		argcounterror(tree, 2);
+		if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYINT){
+			out->i = tree->arguments->i + tree->arguments->nextelement->i;
+			out->type = LUCKYINT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->f + tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYINT){
+			out->f = tree->arguments->f + tree->arguments->nextelement->i;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->i + tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}
+		else {
+			printf("invalid types given!\n");
+			exit(1);
+		}
+	}
+	else if (strcmp(tree->function, "-") == 0){
+		argcounterror(tree, 2);
+		if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYINT){
+			out->i = tree->arguments->i - tree->arguments->nextelement->i;
+			out->type = LUCKYINT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->f - tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYINT){
+			out->f = tree->arguments->f - tree->arguments->nextelement->i;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->i - tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}
+		else {
+			printf("invalid types given!\n");
+			exit(1);
+		}
+	}
+	else if (strcmp(tree->function, "*") == 0){
+		argcounterror(tree, 2);
+		if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYINT){
+			out->i = tree->arguments->i * tree->arguments->nextelement->i;
+			out->type = LUCKYINT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->f * tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYINT){
+			out->f = tree->arguments->f * tree->arguments->nextelement->i;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->i * tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}
+		else {
+			printf("invalid types given!\n");
+			exit(1);
+		}
+	}
+	else if (strcmp(tree->function, "/") == 0){
+		argcounterror(tree, 2);
+		if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYINT){
+			out->i = tree->arguments->i / tree->arguments->nextelement->i;
+			out->type = LUCKYINT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->f / tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYFLOAT && tree->arguments->nextelement->type == LUCKYINT){
+			out->f = tree->arguments->f / tree->arguments->nextelement->i;
+			out->type = LUCKYFLOAT;
+		}else if (tree->arguments->type == LUCKYINT && tree->arguments->nextelement->type == LUCKYFLOAT){
+			out->f = tree->arguments->i / tree->arguments->nextelement->f;
+			out->type = LUCKYFLOAT;
+		} 
+		else {
+			printf("invalid types given!\n");
+			exit(1);
+		}
+	}
+	else return false;
+	return true;
+}
+
+bool variableops(luckytree *tree, luckyval *out){
+	if (strcmp(tree->function, "let") == 0){
+		argcounterror(tree, 2);
+		if (tree->arguments->type == LUCKYVAR) {
+			variables[varcount] = malloc(sizeof(luckyvar));
+			variables[varcount]->name = strdup(tree->arguments->var);
+
+			variables[varcount]->val = malloc(sizeof(luckyval));
+			memcpy(variables[varcount]->val, tree->arguments->nextelement, sizeof(luckyval));
+			varcount++;
+		} else {
+			printf("expected var name as the first argument!\n");
+			exit(1);
+		}
+	}
+	else return false;
+	return true;
+}
+
+bool io(luckytree *tree, luckyval *out){
+	if (strcmp(tree->function, "print") == 0){
+		argcounterror(tree, 1);
+		if (tree->arguments->type == LUCKYINT)
+			printf("%d\n", tree->arguments->i);
+		if (tree->arguments->type == LUCKYFLOAT)
+			printf("%f\n", tree->arguments->f);
+	}
+	else if (strcmp(tree->function, "readint") == 0){
+		argcounterror(tree, 0);
+		int i;
+		scanf("%d", &i);
+		out->i = i;
+		out->type = LUCKYINT;
+	}
+	else if (strcmp(tree->function, "readfloat") == 0){
+		argcounterror(tree, 0);
+		float f;
+		scanf("%f", &f);
+		out->f = f;
+		out->type = LUCKYFLOAT;
+	}
+	else return false;
+	return true;
+}