Examples with ActionText org.antlr.v4.codegen.model.chunk.ActionText used on opensource projects

Example 1 with ActionText

use of org.antlr.v4.codegen.model.chunk.ActionText in project antlr4 by tunnelvisionlabs.

the class ActionTranslator method qualifiedAttr.

@Override
public void qualifiedAttr(String expr, Token x, Token y) {
    gen.g.tool.log("action-translator", "qattr " + x + "." + y);
    if (node.resolver.resolveToAttribute(x.getText(), node) != null) {
        // must be a member access to a predefined attribute like $ctx.foo
        attr(expr, x);
        chunks.add(new ActionText(nodeContext, "." + y.getText()));
        return;
    }
    Attribute a = node.resolver.resolveToAttribute(x.getText(), y.getText(), node);
    if (a == null) {
        // Added in response to https://github.com/antlr/antlr4/issues/1211
        gen.g.tool.errMgr.grammarError(ErrorType.UNKNOWN_SIMPLE_ATTRIBUTE, gen.g.fileName, x, x.getText(), "rule");
        return;
    }
    switch(a.dict.type) {
        // has to be current rule
        case ARG:
            chunks.add(new ArgRef(nodeContext, y.getText()));
            break;
        case RET:
            chunks.add(new QRetValueRef(nodeContext, getRuleLabel(x.getText()), y.getText()));
            break;
        case PREDEFINED_RULE:
            chunks.add(getRulePropertyRef(x, y));
            break;
        case TOKEN:
            chunks.add(getTokenPropertyRef(x, y));
            break;
    }
}

Example 2 with ActionText

use of org.antlr.v4.codegen.model.chunk.ActionText in project antlr4 by tunnelvisionlabs.

the class ScopeParser method parseAttributeDef.

/**
 * For decls like "String foo" or "char *foo32[]" compute the ID
 * and type declarations.  Also handle "int x=3" and 'T t = new T("foo")'
 * but if the separator is ',' you cannot use ',' in the initvalue
 * unless you escape use "\," escape.
 */
public static Attribute parseAttributeDef(@Nullable ActionAST action, @NotNull Tuple2<String, Integer> decl, Grammar g) {
    if (decl.getItem1() == null)
        return null;
    Attribute attr = new Attribute();
    int rightEdgeOfDeclarator = decl.getItem1().length() - 1;
    int equalsIndex = decl.getItem1().indexOf('=');
    if (equalsIndex > 0) {
        // everything after the '=' is the init value
        attr.initValue = decl.getItem1().substring(equalsIndex + 1, decl.getItem1().length()).trim();
        rightEdgeOfDeclarator = equalsIndex - 1;
    }
    String declarator = decl.getItem1().substring(0, rightEdgeOfDeclarator + 1);
    Tuple2<Integer, Integer> p;
    String text = decl.getItem1();
    text = text.replaceAll("::", "");
    if (text.contains(":")) {
        // declarator has type appearing after the name like "x:T"
        p = _parsePostfixDecl(attr, declarator, action, g);
    } else {
        // declarator has type appearing before the name like "T x"
        p = _parsePrefixDecl(attr, declarator, action, g);
    }
    int idStart = p.getItem1();
    int idStop = p.getItem2();
    attr.decl = decl.getItem1();
    if (action != null) {
        String actionText = action.getText();
        int[] lines = new int[actionText.length()];
        int[] charPositionInLines = new int[actionText.length()];
        for (int i = 0, line = 0, col = 0; i < actionText.length(); i++, col++) {
            lines[i] = line;
            charPositionInLines[i] = col;
            if (actionText.charAt(i) == '\n') {
                line++;
                col = -1;
            }
        }
        int[] charIndexes = new int[actionText.length()];
        for (int i = 0, j = 0; i < actionText.length(); i++, j++) {
            charIndexes[j] = i;
            // skip comments
            if (i < actionText.length() - 1 && actionText.charAt(i) == '/' && actionText.charAt(i + 1) == '/') {
                while (i < actionText.length() && actionText.charAt(i) != '\n') {
                    i++;
                }
            }
        }
        int declOffset = charIndexes[decl.getItem2()];
        int declLine = lines[declOffset + idStart];
        int line = action.getToken().getLine() + declLine;
        int charPositionInLine = charPositionInLines[declOffset + idStart];
        if (declLine == 0) {
            /* offset for the start position of the ARG_ACTION token, plus 1
				 * since the ARG_ACTION text had the leading '[' stripped before
				 * reaching the scope parser.
				 */
            charPositionInLine += action.getToken().getCharPositionInLine() + 1;
        }
        int offset = ((CommonToken) action.getToken()).getStartIndex();
        attr.token = new CommonToken(action.getToken().getInputStream(), ANTLRParser.ID, BaseRecognizer.DEFAULT_TOKEN_CHANNEL, offset + declOffset + idStart + 1, offset + declOffset + idStop);
        attr.token.setLine(line);
        attr.token.setCharPositionInLine(charPositionInLine);
        assert attr.name.equals(attr.token.getText()) : "Attribute text should match the pseudo-token text at this point.";
    }
    return attr;
}

Example 3 with ActionText

use of org.antlr.v4.codegen.model.chunk.ActionText in project antlr4 by antlr.

the class ScopeParser method parseAttributeDef.

/**
 * For decls like "String foo" or "char *foo32[]" compute the ID
 * and type declarations.  Also handle "int x=3" and 'T t = new T("foo")'
 * but if the separator is ',' you cannot use ',' in the initvalue
 * unless you escape use "\," escape.
 */
public static Attribute parseAttributeDef(ActionAST action, Pair<String, Integer> decl, Grammar g) {
    if (decl.a == null)
        return null;
    Attribute attr = new Attribute();
    int rightEdgeOfDeclarator = decl.a.length() - 1;
    int equalsIndex = decl.a.indexOf('=');
    if (equalsIndex > 0) {
        // everything after the '=' is the init value
        attr.initValue = decl.a.substring(equalsIndex + 1, decl.a.length()).trim();
        rightEdgeOfDeclarator = equalsIndex - 1;
    }
    String declarator = decl.a.substring(0, rightEdgeOfDeclarator + 1);
    Pair<Integer, Integer> p;
    String text = decl.a;
    text = text.replaceAll("::", "");
    if (text.contains(":")) {
        // declarator has type appearing after the name like "x:T"
        p = _parsePostfixDecl(attr, declarator, action, g);
    } else {
        // declarator has type appearing before the name like "T x"
        p = _parsePrefixDecl(attr, declarator, action, g);
    }
    int idStart = p.a;
    int idStop = p.b;
    attr.decl = decl.a;
    if (action != null) {
        String actionText = action.getText();
        int[] lines = new int[actionText.length()];
        int[] charPositionInLines = new int[actionText.length()];
        for (int i = 0, line = 0, col = 0; i < actionText.length(); i++, col++) {
            lines[i] = line;
            charPositionInLines[i] = col;
            if (actionText.charAt(i) == '\n') {
                line++;
                col = -1;
            }
        }
        int[] charIndexes = new int[actionText.length()];
        for (int i = 0, j = 0; i < actionText.length(); i++, j++) {
            charIndexes[j] = i;
            // skip comments
            if (i < actionText.length() - 1 && actionText.charAt(i) == '/' && actionText.charAt(i + 1) == '/') {
                while (i < actionText.length() && actionText.charAt(i) != '\n') {
                    i++;
                }
            }
        }
        int declOffset = charIndexes[decl.b];
        int declLine = lines[declOffset + idStart];
        int line = action.getToken().getLine() + declLine;
        int charPositionInLine = charPositionInLines[declOffset + idStart];
        if (declLine == 0) {
            /* offset for the start position of the ARG_ACTION token, plus 1
				 * since the ARG_ACTION text had the leading '[' stripped before
				 * reaching the scope parser.
				 */
            charPositionInLine += action.getToken().getCharPositionInLine() + 1;
        }
        int offset = ((CommonToken) action.getToken()).getStartIndex();
        attr.token = new CommonToken(action.getToken().getInputStream(), ANTLRParser.ID, BaseRecognizer.DEFAULT_TOKEN_CHANNEL, offset + declOffset + idStart + 1, offset + declOffset + idStop);
        attr.token.setLine(line);
        attr.token.setCharPositionInLine(charPositionInLine);
        assert attr.name.equals(attr.token.getText()) : "Attribute text should match the pseudo-token text at this point.";
    }
    return attr;
}

Example 4 with ActionText

use of org.antlr.v4.codegen.model.chunk.ActionText in project antlr4 by antlr.

the class ActionTranslator method qualifiedAttr.

@Override
public void qualifiedAttr(String expr, Token x, Token y) {
    gen.g.tool.log("action-translator", "qattr " + x + "." + y);
    if (node.resolver.resolveToAttribute(x.getText(), node) != null) {
        // must be a member access to a predefined attribute like $ctx.foo
        attr(expr, x);
        chunks.add(new ActionText(nodeContext, "." + y.getText()));
        return;
    }
    Attribute a = node.resolver.resolveToAttribute(x.getText(), y.getText(), node);
    if (a == null) {
        // Added in response to https://github.com/antlr/antlr4/issues/1211
        gen.g.tool.errMgr.grammarError(ErrorType.UNKNOWN_SIMPLE_ATTRIBUTE, gen.g.fileName, x, x.getText(), "rule");
        return;
    }
    switch(a.dict.type) {
        // has to be current rule
        case ARG:
            chunks.add(new ArgRef(nodeContext, y.getText()));
            break;
        case RET:
            chunks.add(new QRetValueRef(nodeContext, getRuleLabel(x.getText()), y.getText()));
            break;
        case PREDEFINED_RULE:
            chunks.add(getRulePropertyRef(x, y));
            break;
        case TOKEN:
            chunks.add(getTokenPropertyRef(x, y));
            break;
    }
}