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#include "driver.h"
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include "ast.h"
#include "interpreter.h"
typedef void *YY_BUFFER_STATE;
extern FILE *yyin;
extern IMP_ASTNode *ast_root;
extern int yyparse(void);
extern void yyrestart (FILE*);
extern YY_BUFFER_STATE yy_scan_string(const char*);
extern void yy_delete_buffer(YY_BUFFER_STATE);
int imp_driver_interpret_file (IMP_InterpreterContext *context, const char *path) {
yyin = fopen(path, "r");
if (!yyin) return -1;
yyrestart(yyin);
if (yyparse()) {
imp_ast_destroy(ast_root);
fclose(yyin);
return -1;
}
if (imp_interpreter_interpret_ast(context, ast_root)) {
imp_ast_destroy(ast_root);
fclose(yyin);
return -1;
}
imp_ast_destroy(ast_root);
fclose(yyin);
return 0;
}
int imp_driver_interpret_str (IMP_InterpreterContext *context, const char *str) {
YY_BUFFER_STATE buf = yy_scan_string(str);
if (yyparse()) {
imp_ast_destroy(ast_root);
yy_delete_buffer(buf);
return -1;
}
if (imp_interpreter_interpret_ast(context, ast_root)) {
imp_ast_destroy(ast_root);
yy_delete_buffer(buf);
return -1;
}
yy_delete_buffer(buf);
return 0;
}
static void ast_print (IMP_ASTNode *node, int depth) {
int indent = depth * 2;
switch (node->type) {
case IMP_AST_NT_SKIP: {
printf("%*sSKIP\n", indent, "");
break;
}
case IMP_AST_NT_ASSIGN: {
printf("%*sASSIGN %s = ", indent, "",
node->data.assign.var->data.variable.name);
ast_print(node->data.assign.aexpr, 0);
printf("\n");
break;
}
case IMP_AST_NT_SEQ: {
ast_print(node->data.seq.fst_stmt, depth);
ast_print(node->data.seq.snd_stmt, depth);
break;
}
case IMP_AST_NT_IF: {
printf("%*sIF (", indent, "");
ast_print(node->data.if_stmt.cond_bexpr, 0);
printf(")\n");
ast_print(node->data.if_stmt.then_stmt, depth + 1);
printf("%*sELSE\n", indent, "");
ast_print(node->data.if_stmt.else_stmt, depth + 1);
break;
}
case IMP_AST_NT_WHILE: {
printf("%*sWHILE (", indent, "");
ast_print(node->data.while_stmt.cond_bexpr, 0);
printf(")\n");
ast_print(node->data.while_stmt.body_stmt, depth + 1);
break;
}
case IMP_AST_NT_INT: {
printf("%d", node->data.integer.val);
break;
}
case IMP_AST_NT_VAR: {
printf("%s", node->data.variable.name);
break;
}
case IMP_AST_NT_AOP: {
printf("(");
ast_print(node->data.arith_op.l_aexpr, 0);
switch (node->data.arith_op.aopr) {
case IMP_AST_AOP_ADD: printf(" + "); break;
case IMP_AST_AOP_SUB: printf(" - "); break;
case IMP_AST_AOP_MUL: printf(" * "); break;
default: assert(0);
}
ast_print(node->data.arith_op.r_aexpr, 0);
printf(")");
break;
}
case IMP_AST_NT_BOP: {
printf("(");
ast_print(node->data.bool_op.l_bexpr, 0);
switch (node->data.bool_op.bopr) {
case IMP_AST_BOP_AND: printf(" && "); break;
case IMP_AST_BOP_OR: printf(" || "); break;
default: assert(0);
}
ast_print(node->data.bool_op.r_bexpr, 0);
printf(")");
break;
}
case IMP_AST_NT_NOT: {
printf("!");
ast_print(node->data.bool_not.bexpr, 0);
break;
}
case IMP_AST_NT_ROP: {
printf("(");
ast_print(node->data.rel_op.l_aexpr, 0);
switch (node->data.rel_op.ropr) {
case IMP_AST_ROP_EQ: printf(" == "); break;
case IMP_AST_ROP_NE: printf(" != "); break;
case IMP_AST_ROP_LT: printf(" < "); break;
case IMP_AST_ROP_LE: printf(" <= "); break;
case IMP_AST_ROP_GT: printf(" > "); break;
case IMP_AST_ROP_GE: printf(" >= "); break;
default: assert(0);
}
ast_print(node->data.rel_op.r_aexpr, 0);
printf(")");
break;
}
case IMP_AST_NT_LET: {
printf("%*sLET %s = ", indent, "", node->data.let_stmt.var->data.variable.name);
ast_print(node->data.let_stmt.aexpr, 0);
printf("\n");
ast_print(node->data.let_stmt.body_stmt, depth + 1);
break;
}
case IMP_AST_NT_PROCDECL: {
printf("%*sPROC %s(", indent, "", node->data.proc_decl.name);
IMP_ASTNodeList *args = node->data.proc_decl.val_args;
while (args) {
printf("%s", args->node->data.variable.name);
args = args->next;
if (args) printf(", ");
}
printf("; ");
IMP_ASTNodeList *vargs = node->data.proc_decl.var_args;
while (vargs) {
printf("%s", vargs->node->data.variable.name);
vargs = vargs->next;
if (vargs) printf(", ");
}
printf(")\n");
ast_print(node->data.proc_decl.body_stmt, depth + 1);
break;
}
case IMP_AST_NT_PROCCALL: {
printf("%*sCALL %s(", indent, "", node->data.proc_call.name);
IMP_ASTNodeList *args = node->data.proc_call.val_args;
while (args) {
ast_print(args->node, 0);
args = args->next;
if (args) printf(", ");
}
printf("; ");
IMP_ASTNodeList *vargs = node->data.proc_call.var_args;
while (vargs) {
printf("%s", vargs->node->data.variable.name);
vargs = vargs->next;
if (vargs) printf(", ");
}
printf(")\n");
break;
}
default: assert(0);
}
}
int imp_driver_print_ast_file (const char *path) {
yyin = fopen(path, "r");
if (!yyin) return -1;
yyrestart(yyin);
if (yyparse()) {
imp_ast_destroy(ast_root);
fclose(yyin);
return -1;
}
ast_print(ast_root, 0);
imp_ast_destroy(ast_root);
fclose(yyin);
return 0;
}
void imp_driver_print_var_table(IMP_InterpreterContext *context) {
IMP_InterpreterContextVarIter *iter = imp_interpreter_context_var_iter_create(context);
const IMP_InterpreterContextVarTableEntry *var_entry;
while ((var_entry = imp_interpreter_context_var_iter_next(iter))) {
printf("%s = %d\n", var_entry->key, var_entry->value);
}
imp_interpreter_context_var_iter_destroy(iter);
}
void imp_driver_print_proc_table(IMP_InterpreterContext *context) {
IMP_InterpreterContextProcIter *iter = imp_interpreter_context_proc_iter_create(context);
const IMP_InterpreterContextProcTableEntry *proc_entry;
while ((proc_entry = imp_interpreter_context_proc_iter_next(iter))) {
const IMP_ASTNode *procdecl = proc_entry->value;
printf("%s(", proc_entry->key);
IMP_ASTNodeList *args = procdecl->data.proc_decl.val_args;
while (args) {
printf("%s", args->node->data.variable.name);
args = args->next;
if (args) printf(", ");
}
printf("; ");
IMP_ASTNodeList *vargs = procdecl->data.proc_decl.var_args;
while (vargs) {
printf("%s", vargs->node->data.variable.name);
vargs = vargs->next;
if (vargs) printf(", ");
}
printf(")\n");
}
imp_interpreter_context_proc_iter_destroy(iter);
}
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