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Fancier error messages for assert(X == Y)

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git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@1008 0fc631ac-6414-0410-93d0-97cfa31319b6
This commit is contained in:
twanvl
2008-06-28 14:51:20 +00:00
parent dfae1b2729
commit c0d114c4a2
1 changed files with 37 additions and 11 deletions
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src/script/parser.cpp
+37 -11
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@@ -559,18 +559,44 @@ void parseExpr(TokenIterator& input, Script& script, Precedence minPrec) {
int line = input.getLineNumber();
parseOper(input, script, PREC_ALL); // condition
size_t end = input.peek().pos;
String message = String::Format(_("Assertion failure on line %d: "), line) + input.getSourceCode(start,end);
String message = String::Format(_("Assertion failure on line %d:\n expected: "), line) + input.getSourceCode(start,end);
expectToken(input, _(")"), &token);
// compile into: if condition then nil else warning("condition")
unsigned jmpElse = script.addInstruction(I_JUMP_IF_NOT); // jnz lbl_else
script.addInstruction(I_PUSH_CONST, script_nil); // push nil
unsigned jmpEnd = script.addInstruction(I_JUMP); // jump lbl_end
script.comeFrom(jmpElse); // lbl_else:
script.addInstruction(I_PUSH_CONST, script_warning); // push warning
script.addInstruction(I_PUSH_CONST, message); // push "condition"
script.addInstruction(I_CALL, 1); // call
script.addInstruction(I_NOP, SCRIPT_VAR_input); // (input:)
script.comeFrom(jmpEnd); // lbl_end:
if (script.getInstructions().back().instr == I_BINARY && script.getInstructions().back().instr2 == I_EQ) {
// compile "assert(x == y)" into "
message += _("\n found: ");
script.getInstructions().pop_back(); // remove ==
script.addInstruction(I_DUP, 1); // duplicate X
script.addInstruction(I_DUP, 1); // duplicate Y
script.addInstruction(I_BINARY, I_EQ); //
unsigned jmpElse = script.addInstruction(I_JUMP_IF_NOT); // jnz lbl_else
script.addInstruction(I_PUSH_CONST, script_nil); // push nil
unsigned jmpEnd = script.addInstruction(I_JUMP); // jump lbl_end
script.comeFrom(jmpElse); // lbl_else:
script.addInstruction(I_PUSH_CONST, script_warning); // push warning
script.addInstruction(I_PUSH_CONST, message); // push "condition"
script.addInstruction(I_DUP, 3); // duplicate X
script.addInstruction(I_BINARY, I_ADD); // add
script.addInstruction(I_PUSH_CONST, String(_(" != "))); // push " != "
script.addInstruction(I_BINARY, I_ADD); // add
script.addInstruction(I_DUP, 2); // duplicate Y
script.addInstruction(I_BINARY, I_ADD); // add
script.addInstruction(I_CALL, 1); // call
script.addInstruction(I_NOP, SCRIPT_VAR_input); // (input:)
script.comeFrom(jmpEnd); // lbl_end:
script.addInstruction(I_BINARY, I_POP); // pop Y_copy
script.addInstruction(I_BINARY, I_POP); // pop X_copy
} else {
// compile into: if condition then nil else warning("condition")
unsigned jmpElse = script.addInstruction(I_JUMP_IF_NOT); // jnz lbl_else
script.addInstruction(I_PUSH_CONST, script_nil); // push nil
unsigned jmpEnd = script.addInstruction(I_JUMP); // jump lbl_end
script.comeFrom(jmpElse); // lbl_else:
script.addInstruction(I_PUSH_CONST, script_warning); // push warning
script.addInstruction(I_PUSH_CONST, message); // push "condition"
script.addInstruction(I_CALL, 1); // call
script.addInstruction(I_NOP, SCRIPT_VAR_input); // (input:)
script.comeFrom(jmpEnd); // lbl_end:
}
} else {
// variable
Variable var = string_to_variable(token.value);